WO2024001832A1 - 通信方法及通信装置 - Google Patents

通信方法及通信装置 Download PDF

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Publication number
WO2024001832A1
WO2024001832A1 PCT/CN2023/100771 CN2023100771W WO2024001832A1 WO 2024001832 A1 WO2024001832 A1 WO 2024001832A1 CN 2023100771 W CN2023100771 W CN 2023100771W WO 2024001832 A1 WO2024001832 A1 WO 2024001832A1
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WO
WIPO (PCT)
Prior art keywords
information
symbol
psfch
indicate
symbols
Prior art date
Application number
PCT/CN2023/100771
Other languages
English (en)
French (fr)
Inventor
黎超
薛丽霞
焦瑞晟
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2024001832A1 publication Critical patent/WO2024001832A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0006—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information

Definitions

  • the embodiments of the present application relate to the field of communication, and more specifically, to a communication method and a communication device.
  • the first symbol at the beginning of the transmission time slot is usually used for gain control of the receiver.
  • the last symbol of a slot is usually used as a null symbol. In this way, neither the first nor the last symbol of the slot transmits data and/or control information.
  • a time slot also includes a feedback channel, the feedback channel cannot be used to transmit data and/or control information.
  • Embodiments of the present application provide a communication method and communication device, which can improve the efficiency of data and/or control information transmission.
  • a communication method is provided.
  • the communication method can be executed by a first communication device, or can also be executed by a chip or circuit used in the first communication device. This application is not limited to this.
  • the communication method includes: determining a first symbol set, the first symbol set being a set of symbols not occupied by the first message transmission in the time slot, the first symbol set including the M-th symbol from the last in the time slot To at least one symbol in the penultimate symbol, the M is an integer greater than or equal to 2; sending first indication information, where the first indication information is used to indicate the first set of symbols.
  • the first message includes data and/or control information sent by the first communication device.
  • the Mth to penultimate symbols in the time slot are used to transmit feedback channels, synchronization signals, control signaling, etc., so the Mth to penultimate symbols to the penultimate symbols cannot be used to transmit the first message.
  • the first communication device determines at least one symbol from the penultimate M-th symbol to the penultimate symbol of the time slot as a symbol not occupied by the first message transmission.
  • the first communication device can use the symbols from the penultimate M-th symbol to the penultimate symbol that can transmit the first message as much as possible according to the actual transmission conditions of the penultimate M-th symbol to the penultimate symbol in the time slot.
  • the first message is transmitted, thereby improving the efficiency of transmitting the first message.
  • the penultimate M-th symbol to the penultimate symbol include symbols corresponding to the physical sidelink feedback control channel PSFCH.
  • the first indication information includes first information, second information and third information, and the first information, the second information and the third information At least one of the three pieces of information is used to indicate the first symbol set; wherein the first information is used to indicate sending or receiving the PSFCH; the second information is used to indicate whether the PSFCH is frequency division multiplexed ; The third information is used to indicate the broadcast type of the PSFCH.
  • the first indication information uses signaling that indicates other functions, such as at least one of the first information, the second information, and the third information. While indicating other functions, it can also indicate the first symbol set, thereby reducing the number of indication signals. Order overhead.
  • the first information is used to indicate receiving the PSFCH, and the first symbol set includes two symbols before the symbols occupied by the PSFCH transmission and the The number of symbols occupied by the PSFCH transmission is (M-3), and M is greater than or equal to 4.
  • the first information is used to indicate sending the PSFCH and the The second information is used to indicate frequency division multiplexing of the PSFCH, or the first information is used to indicate sending the PSFCH and the third information is used to indicate that the broadcast type of the PSFCH is multicast.
  • a symbol set includes a symbol before the symbol occupied by the PSFCH transmission and the symbol occupied by the PSFCH transmission.
  • the number of symbols occupied by the PSFCH transmission is (M-2), and M is greater than or equal to 3.
  • the first information is used to indicate sending the PSFCH and the second information is used to indicate that the PSFCH is not frequency division multiplexed, or the The first information is used to indicate that the PSFCH is sent and the third information is used to indicate that the broadcast type of the PSFCH is unicast.
  • the first symbol set includes symbols occupied by the PSFCH transmission. The number of symbols is (M-1), and M is greater than or equal to 2.
  • the first indication information includes first information, second information, third information and fourth information, and the first information, the second information and at least one item of the third information and the fourth information are used to indicate the first symbol set; wherein the first information is used to indicate sending or receiving the PSFCH; the second information is used to indicate the first symbol set; The third information is used to indicate whether the PSFCH is frequency division multiplexed; the third information is used to indicate the broadcast type of the PSFCH.
  • the first indication information jointly indicates the first symbol set through at least one of the first information, the second information and the third information and the fourth information. In this way, the flexibility and efficiency of the first symbol set indication can be improved, and the first symbol set can also be reduced. Signaling overhead.
  • the first set of symbols includes two symbols before the symbols occupied by the PSFCH transmission and the symbols occupied by the PSFCH transmission, and the symbols occupied by the PSFCH transmission are The number of symbols is (M-3), and M is greater than or equal to 4.
  • the first indication information includes a first field, the first field indicates the first symbol, the M-th symbol from the bottom to the bottom-M symbol two symbols, and the symbols in the last symbol that are not occupied by the first message transmission.
  • the first information is used to indicate reception of the PSFCH
  • the fifth information is used to indicate the existence of a CPE before the first symbol of the timeslot.
  • the transmitted signal, the first symbol set includes the two symbols before the symbol occupied by the PSFCH transmission and the symbols occupied by the PSFCH transmission, wherein the number of symbols occupied by the PSFCH transmission is (M-3), so Said M is greater than or equal to 4.
  • the first information is used to indicate receiving the PSFCH
  • the sixth information is used to indicate that the time slot is continuously transmitted in the time domain
  • the first set of symbols includes the two symbols before the symbols occupied by the PSFCH transmission and the symbols occupied by the PSFCH transmission, wherein the number of symbols occupied by the PSFCH transmission is (M-3), and the M is greater than or equal to 4.
  • the first information is used to indicate that the PSFCH is sent, and the fifth information is used to indicate that there is no CPE before the first symbol of the timeslot.
  • the transmitted signal and the sixth information are used to indicate that the time slot and the following time slot are continuously transmitted in the time domain.
  • the first symbol set includes the first symbol and the symbols occupied by the PSFCH transmission.
  • the previous two symbols and the symbols occupied by the PSFCH transmission are (M-3), and M is greater than or equal to 4.
  • the first information is used to indicate sending the PSFCH
  • the sixth information is used to indicate the time domain between the time slot and the previous time slot. Discontinuous transmission, and the sixth information is used to indicate that the time slot and the following time slot are continuously transmitted in the time domain
  • the first symbol set includes the first symbol, the symbols occupied by the PSFCH transmission
  • the previous two symbols and the symbols occupied by the PSFCH transmission are (M-3), and M is greater than or equal to 4.
  • the first information is used to indicate that the PSFCH is sent, and the fifth information is used to indicate that there is a signal transmitted by the CPE before the first symbol of the timeslot.
  • the sixth information is used to indicate that the time slot and the next time slot are transmitted discontinuously in the time domain, and the sixth information is used to indicate that the time slot and the previous time slot are continuously transmitted in the time domain.
  • the first symbol set includes the two symbols before the symbol occupied by the PSFCH transmission, the symbol occupied by the PSFCH transmission, and the last symbol, wherein the number of symbols occupied by the PSFCH transmission is (M- 3), the M is greater than or equal to 4.
  • the first information is used to indicate that the PSFCH is sent, and the fifth information is used to indicate that there is no CPE before the first symbol of the timeslot.
  • the transmitted signal and the sixth information are used to indicate that the time slot is transmitted non-continuously in the time domain.
  • the first symbol set includes the first symbol and the two symbols before the PSFCH transmission occupied symbol. symbol, the symbol occupied by the PSFCH transmission, and the last symbol, wherein the number of symbols occupied by the PSFCH transmission is (M-3), and M is greater than or equal to 4.
  • the first information is used to indicate sending the PSFCH
  • the sixth information is used to indicate discontinuous transmission of the time slot in the time domain
  • the first symbol set includes the first symbol, the two symbols before the symbols occupied by the PSFCH transmission, the symbols occupied by the PSFCH transmission, and the last symbol, wherein the number of symbols occupied by the PSFCH transmission is (M-3), and M is greater than or equal to 4.
  • the first information is used to indicate receiving the PSFCH
  • the second information is used to indicate the PSFCH frequency division multiplexing
  • the fifth The information is used to indicate that there is a signal transmitted by the CPE before the first symbol of the time slot
  • the first symbol set includes a symbol before the symbol occupied by the PSFCH transmission and the symbol occupied by the PSFCH transmission, wherein, the The number of symbols occupied by the PSFCH transmission is (M-2), and M is greater than or equal to 3.
  • the first information is used to indicate receiving the PSFCH
  • the second information is used to indicate the PSFCH frequency division multiplexing
  • the sixth information is used to indicate reception of the PSFCH.
  • the information is used to indicate that the time slot is continuously transmitted in the time domain
  • the first symbol set includes a symbol before the symbol occupied by the PSFCH transmission and the symbol occupied by the PSFCH transmission, wherein the PSFCH transmission occupied
  • the number of symbols is (M-2), and M is greater than or equal to 3.
  • the first information is used to indicate receiving the PSFCH
  • the third information is used to indicate that the broadcast type of the PSFCH is multicast
  • the The fifth information is used to indicate that there is a signal transmitted by the CPE before the first symbol of the time slot
  • the first symbol set includes a symbol before the symbol occupied by the PSFCH transmission and the symbol occupied by the PSFCH transmission, where , the number of symbols occupied by the PSFCH transmission is (M-2), and M is greater than or equal to 3.
  • the first information is used to indicate receiving the PSFCH
  • the third information is used to indicate that the broadcast type of the PSFCH is multicast
  • the The sixth information is used to indicate that the time slot is continuously transmitted in the time domain
  • the first symbol set includes a symbol before the symbol occupied by the PSFCH transmission and the symbol occupied by the PSFCH transmission, wherein the PSFCH transmission
  • the number of occupied symbols is (M-2), and M is greater than or equal to 3.
  • the first information is used to indicate sending the PSFCH
  • the second information is used to indicate the PSFCH frequency division multiplexing
  • the fifth information A signal used to indicate that there is no CPE transmission before the first symbol of the time slot
  • the sixth information is used to indicate that the time slot and the next time slot of the time slot are continuously transmitted in the time domain
  • the first symbol set includes the first symbol, a symbol before the symbol occupied by the PSFCH transmission, and the symbol occupied by the PSFCH transmission, wherein the number of symbols occupied by the PSFCH transmission is (M-2 ), the M is greater than or equal to 3.
  • the first information is used to indicate sending the PSFCH
  • the second information is used to indicate the PSFCH frequency division multiplexing
  • the sixth information The first symbol is used to indicate that the time slot and the previous time slot are transmitted discontinuously in the time domain
  • the sixth information is used to indicate that the time slot and the next time slot are continuously transmitted in the time domain.
  • the set includes the first symbol, a symbol before the symbol occupied by the PSFCH transmission, and the symbol occupied by the PSFCH transmission, where the number of symbols occupied by the PSFCH transmission is (M-2), and the M Greater than or equal to 3.
  • the first information is used to indicate sending the PSFCH
  • the third information is used to indicate the broadcast type of the PSFCH is multicast
  • the third information is used to indicate that the broadcast type of the PSFCH is multicast.
  • the fifth information is used to indicate that there is no signal transmitted by the CPE before the first symbol of the time slot
  • the sixth information is used to indicate that the time slot is continuous in the time domain with the time slot after the time slot.
  • the first symbol set includes the first symbol, a symbol before the symbol occupied by the PSFCH transmission, and the symbols occupied by the PSFCH transmission, wherein the number of symbols occupied by the PSFCH transmission is (M -2), the M is greater than or equal to 3.
  • the first information is used to indicate sending the PSFCH
  • the third information is used to indicate that the broadcast type of the PSFCH is multicast
  • the third information is used to indicate that the broadcast type of the PSFCH is multicast.
  • the sixth information is used to indicate that the time slot and the previous time slot are transmitted discontinuously in the time domain, and the sixth information is used to indicate that the time slot and the next time slot are continuously transmitted in the time domain.
  • a symbol set includes the first symbol, a symbol before the symbol occupied by the PSFCH transmission, and the symbol occupied by the PSFCH transmission, where the number of symbols occupied by the PSFCH transmission is (M-2), so Said M is greater than or equal to 3.
  • the first information is used to indicate sending the PSFCH
  • the second information is used to indicate the PSFCH frequency division multiplexing
  • the fifth information is used to indicate A signal indicating that there is a CPE transmission before the first symbol of the time slot
  • the sixth information is used to indicate that the time slot and the following time slot are non-continuously transmitted in the time domain
  • the sixth information is used to Indicates that the time slot and the previous time slot are continuously transmitted in the time domain
  • the first symbol set includes a symbol before the symbol occupied by the PSFCH transmission, the symbol occupied by the PSFCH transmission, and the last symbol, where , the number of symbols occupied by the PSFCH transmission is (M-2), and M is greater than or equal to 3.
  • the first information is used to indicate sending the PSFCH
  • the third information is used to indicate that the broadcast type of the PSFCH is multicast
  • the fifth information Used to indicate the existence of CPE before the first symbol of the timeslot
  • the sixth information is used to indicate that the time slot and the next time slot are transmitted non-continuously in the time domain
  • the sixth information is used to indicate that the time slot and the previous time slot are transmitted in the time domain.
  • the first symbol set includes a symbol before the symbol occupied by the PSFCH transmission, the symbol occupied by the PSFCH transmission, and the last symbol, wherein the number of symbols occupied by the PSFCH transmission is (M- 2), the M is greater than or equal to 3.
  • the first information is used to indicate sending the PSFCH
  • the second information is used to indicate the PSFCH frequency division multiplexing
  • the fifth information A signal used to indicate that there is no CPE transmission before the first symbol of the time slot
  • the sixth information is used to indicate that the time slot is discontinuously transmitted in the time domain
  • the first symbol set includes the The first symbol, the symbol before the symbol occupied by the PSFCH transmission, the symbol occupied by the PSFCH transmission, and the last symbol, wherein the number of symbols occupied by the PSFCH transmission is (M-2), and the M Greater than or equal to 3.
  • the first information is used to indicate sending the PSFCH
  • the second information is used to indicate the PSFCH frequency division multiplexing
  • the sixth information is used to indicate the PSFCH frequency division multiplexing.
  • the information is used to indicate that the time slot is discontinuously transmitted in the time domain
  • the first symbol set includes the first symbol, a symbol before the symbol occupied by the PSFCH transmission, the symbol occupied by the PSFCH transmission, And the last symbol, wherein the number of symbols occupied by the PSFCH transmission is (M-2), and M is greater than or equal to 3.
  • the first information is used to indicate sending the PSFCH
  • the third information is used to indicate the broadcast type of the PSFCH is multicast
  • the third information is used to indicate that the broadcast type of the PSFCH is multicast.
  • the fifth information is used to indicate that there is no signal transmitted by CPE before the first symbol of the time slot
  • the sixth information is used to indicate that the time slot is discontinuously transmitted in the time domain.
  • the first symbol set includes The first symbol, the symbol before the symbol occupied by the PSFCH transmission, the symbol occupied by the PSFCH transmission, and the last symbol, wherein the number of symbols occupied by the PSFCH transmission is (M-2), so Said M is greater than or equal to 3.
  • the first information is used to indicate sending the PSFCH
  • the third information is used to indicate that the broadcast type of the PSFCH is multicast
  • the The sixth information is used to indicate that the time slot is discontinuously transmitted in the time domain.
  • the first symbol set includes the first symbol, a symbol before the symbol occupied by the PSFCH transmission, and the symbol occupied by the PSFCH transmission. symbols, and the last symbol, where the number of symbols occupied by the PSFCH transmission is (M-2), and M is greater than or equal to 3.
  • the first information is used to indicate receiving the PSFCH
  • the second information is used to indicate that the PSFCH is not frequency division multiplexed
  • the third information is used to indicate that the PSFCH is not frequency division multiplexed.
  • Five information is used to indicate that there is a signal transmitted by the CPE before the first symbol of the time slot.
  • the first symbol set includes the symbols occupied by the PSFCH transmission, where the number of symbols occupied by the PSFCH transmission is (M- 1), the M is greater than or equal to 2.
  • the first information is used to indicate receiving the PSFCH
  • the second information is used to indicate that the PSFCH is not frequency division multiplexed
  • the third information is used to indicate that the PSFCH is not frequency division multiplexed.
  • Six information is used to indicate that the time slot is continuously transmitted in the time domain.
  • the first symbol set includes symbols occupied by the PSFCH transmission, where the number of symbols occupied by the PSFCH transmission is (M-1), and the M is greater than or equal to 2.
  • the first information is used to indicate receiving the PSFCH
  • the third information is used to indicate that the broadcast type of the PSFCH is unicast
  • the The fifth information is used to indicate that there is a signal transmitted by the CPE before the first symbol of the time slot.
  • the first symbol set includes the symbols occupied by the PSFCH transmission, where the number of symbols occupied by the PSFCH transmission is (M -1), the M is greater than or equal to 2.
  • the first information is used to indicate receiving the PSFCH
  • the third information is used to indicate that the broadcast type of the PSFCH is unicast
  • the The sixth information is used to indicate that the time slot is continuously transmitted in the time domain.
  • the first symbol set includes symbols occupied by the PSFCH transmission, where the number of symbols occupied by the PSFCH transmission is (M-1), so Said M is greater than or equal to 2.
  • the first information is used to indicate that the PSFCH is sent
  • the second information is used to indicate that the PSFCH is not frequency division multiplexed
  • the fifth information is used to indicate that the PSFCH is not frequency division multiplexed.
  • the information is used to indicate that there is no signal transmitted by the CPE before the first symbol of the time slot
  • the sixth information is used to indicate that the time slot and the time slot after the time slot are continuously transmitted in the time domain.
  • the first symbol set includes the first symbol and the symbols occupied by the PSFCH transmission, where the number of symbols occupied by the PSFCH transmission is (M-1), and M is greater than or equal to 2.
  • the first information is used to indicate sending the PSFCH
  • the second information is used to indicate that the PSFCH is not frequency division multiplexed
  • the sixth information is used to indicate that the PSFCH is not frequency division multiplexed.
  • the information is used to indicate that the time slot and the previous time slot are transmitted discontinuously in the time domain
  • the sixth information is used to indicate that the time slot and the next time slot are continuously transmitted in the time domain.
  • the first Symbol collection package Including the first symbol and the symbols occupied by the PSFCH transmission, where the number of symbols occupied by the PSFCH transmission is (M-1), and M is greater than or equal to 2.
  • the first information is used to indicate sending the PSFCH
  • the third information is used to indicate the broadcast type of the PSFCH is unicast
  • the third information is used to indicate that the broadcast type of the PSFCH is unicast.
  • the fifth information is used to indicate that there is no signal transmitted by CPE before the first symbol of the time slot
  • the sixth information is used to indicate that the time slot and the following time slot are continuously transmitted in the time domain
  • the third A symbol set includes the first symbol and the symbols occupied by the PSFCH transmission, where the number of symbols occupied by the PSFCH transmission is (M-1), and M is greater than or equal to 2.
  • the first information is used to indicate sending the PSFCH
  • the third information is used to indicate the broadcast type of the PSFCH is unicast
  • the third information is used to indicate that the broadcast type of the PSFCH is unicast.
  • the sixth information is used to indicate that the time slot and the previous time slot are transmitted discontinuously in the time domain, and the sixth information is used to indicate that the time slot and the next time slot are continuously transmitted in the time domain.
  • a symbol set includes the first symbol and the symbols occupied by the PSFCH transmission, where the number of symbols occupied by the PSFCH transmission is (M-1), and M is greater than or equal to 2.
  • the first information is used to indicate that the PSFCH is sent
  • the second information is used to indicate that the PSFCH is not frequency division multiplexed
  • the fifth information is used to indicate that the PSFCH is sent.
  • the sixth information is used to indicate discontinuous transmission in the time domain between the time slot and the following time slot, and the time slot is different from the previous time slot.
  • One time slot is continuously transmitted in the time domain, and the first symbol set includes the symbols occupied by the PSFCH transmission and the last symbol, where the number of symbols occupied by the PSFCH transmission is (M-1), and the M is greater than or equal to 2.
  • the first information is used to indicate sending the PSFCH
  • the third information is used to indicate the broadcast type of the PSFCH is unicast
  • the fifth information is used to indicate that the broadcast type of the PSFCH is unicast.
  • the sixth information is used to indicate that the time slot and the following time slot are non-continuously transmitted in the time domain
  • the sixth information The information is used to indicate that the time slot and the previous time slot are continuously transmitted in the time domain.
  • the first symbol set includes the symbols occupied by the PSFCH transmission and the last symbol, wherein the symbols occupied by the PSFCH transmission
  • the number is (M-1), and M is greater than or equal to 2.
  • the first information is used to indicate that the PSFCH is sent
  • the second information is used to indicate that the PSFCH is not frequency division multiplexed
  • the fifth information is used to indicate that the PSFCH is not frequency division multiplexed.
  • the information is used to indicate that there is no signal transmitted by CPE before the first symbol of the time slot
  • the sixth information is used to indicate that the time slot is discontinuously transmitted in the time domain
  • the first symbol set includes all The first symbol, the symbol occupied by the PSFCH transmission, and the last symbol, wherein the number of symbols occupied by the PSFCH transmission is (M-1), and M is greater than or equal to 2.
  • the first information is used to indicate sending the PSFCH
  • the second information is used to indicate that the PSFCH is not frequency division multiplexed
  • the third information is used to indicate that the PSFCH is not frequency division multiplexed.
  • the six information is used to indicate that the time slot is non-continuously transmitted in the time domain.
  • the first symbol set includes the first symbol, the symbols occupied by the PSFCH transmission, and the last symbol, wherein the PSFCH transmission
  • the number of occupied symbols is (M-1), and M is greater than or equal to 2.
  • the first information is used to indicate sending the PSFCH
  • the third information is used to indicate the broadcast type of the PSFCH is unicast
  • the third information is used to indicate that the broadcast type of the PSFCH is unicast.
  • the fifth information is used to indicate that there is no signal transmitted by CPE before the first symbol of the time slot
  • the sixth information is used to indicate that the time slot is discontinuously transmitted in the time domain.
  • the first symbol set includes The first symbol, the symbol occupied by the PSFCH transmission, and the last symbol, wherein the number of symbols occupied by the PSFCH transmission is (M-1), and M is greater than or equal to 2.
  • the first information is used to indicate sending the PSFCH
  • the third information is used to indicate that the broadcast type of the PSFCH is unicast
  • the The sixth information is used to indicate that the time slot is discontinuously transmitted in the time domain
  • the first symbol set includes the first symbol, the symbol occupied by the PSFCH transmission, and the last symbol, wherein the PSFCH The number of symbols occupied by transmission is (M-1), and M is greater than or equal to 2.
  • the symbols occupied by the PSFCH transmission are the penultimate number of the timeslot. (M-2) to the penultimate symbol.
  • the first symbol set includes a symbol before the symbol occupied by the PSFCH transmission and the symbol occupied by the PSFCH transmission, and the symbol occupied by the PSFCH transmission
  • the number is (M-2), and M is greater than or equal to 3.
  • the symbols occupied by the PSFCH transmission are the penultimate number of the timeslot. (M-1) to the penultimate symbol.
  • the first symbol set includes symbols occupied by the PSFCH transmission.
  • number, the number of symbols occupied by the PSFCH transmission is (M-1), and M is greater than or equal to 2.
  • the symbols occupied by the PSFCH transmission are the Mth from the bottom of the timeslot. symbols to the second to last symbol.
  • the first symbol set further includes the first symbol and/or the last symbol of the time slot.
  • the first communication device determines, from the first symbol and/or the last symbol of the time slot, unoccupied symbols that can be transmitted as the first message. In this way, the first communication device can use the symbols in the first symbol and/or the last symbol that are capable of transmitting the first message to transmit the first message as much as possible according to the actual transmission situation of the first symbol and/or the last symbol in the time slot.
  • One message thereby improving the accuracy of the first message transmission, thereby improving transmission efficiency.
  • the first indication information includes first information, second information, third information, fifth information and sixth information, and the fifth information or the At least one of the sixth information, the first information, the second information and the third information is used to indicate the first symbol set; wherein the first information is used to indicate sending or Receive the PSFCH; the second information is used to indicate whether the PSFCH is frequency division multiplexed; the third information is used to indicate the broadcast type of the PSFCH; the fifth information is used to indicate the time slot Whether there is a signal transmitted by the cyclic prefix extension CPE before the first symbol; the sixth information is used to indicate whether the time slot is continuously transmitted in the time domain.
  • the first indication information uses signaling indicating other functions, such as the fifth information or the sixth information, to jointly indicate the first symbol set with at least one of the first information, the second information and the third information. In this way, it can not only improve The first set of symbols indicates flexibility and efficiency and also reduces signaling overhead.
  • the first indication information includes first information, second information, third information, fifth information, sixth information, and seventh information, and the The seventh information and at least one of the first information, the second information, the third information, the fifth information and the sixth information are used to indicate the first symbol set; wherein, The first information is used to indicate sending or receiving the PSFCH; the second information is used to indicate whether the PSFCH is frequency division multiplexed; the third information is used to indicate the broadcast type of the PSFCH; the third information is used to indicate whether the PSFCH is frequency division multiplexed; the third information is used to indicate the broadcast type of the PSFCH; The fifth information is used to indicate whether there is a signal transmitted by cyclic prefix extension CPE before the first symbol of the time slot; the sixth information is used to indicate whether the time slot is continuously transmitted in the time domain.
  • the first indication information jointly indicates the first symbol set through the seventh information and at least one of the first information, the second information, the third information, the fifth information and the sixth information. In this way, the indication of the first symbol set can be improved. Flexibility and efficiency can also reduce signaling overhead.
  • the first indication information includes eighth information, and the first indication information further includes ninth information and/or tenth information; wherein, the first indication information includes ninth information and/or tenth information.
  • the eighth information is used to indicate the symbols not occupied by the first message transmission among the penultimate M-th symbol to the penultimate symbol; the ninth information is used to indicate whether the first symbol is the first symbols not occupied by message transmission; the tenth information is used to indicate whether the last symbol is a symbol not occupied by the first message transmission.
  • the ninth information is used to indicate whether there is a signal transmitted by the CPE before the first symbol of the time slot or whether the time slot is in the time domain. Continuous transmission.
  • the first indication information uses signaling to indicate other functions, such as the ninth information. While indicating other functions, it can also indicate whether the first symbol is a symbol not occupied by the first message transmission, thereby reducing the overhead of indication signaling. .
  • the ninth information is used to indicate that there is no signal transmitted by the CPE before the first symbol of the time slot, and the first symbol set includes the The first symbol, or the ninth information is used to indicate that the time slot is transmitted non-continuously in the time domain, and the first symbol set includes the first symbol.
  • the tenth information is used to indicate whether the time slot is continuously transmitted in the time domain.
  • the first indication information uses signaling to indicate other functions, such as the tenth information. While indicating other functions, it can also indicate whether the last symbol is a symbol not occupied by the first message transmission, thereby reducing the overhead of indication signaling.
  • the tenth information is used to indicate that the time slot is transmitted non-continuously in the time domain, and the first symbol set includes the last symbol.
  • the eighth information includes first information, second information and third information, and the first information, the second information and the third information At least one item of the information is used to indicate the symbols not occupied by the first message transmission in the penultimate M-th symbol to the penultimate symbol; wherein the first information is used to indicate sending or receiving the PSFCH ; The second information is used to indicate whether the PSFCH is frequency division multiplexed; the third information is used to indicate the broadcast type of the PSFCH.
  • the first indication information uses signaling indicating other functions, such as the first information, the second information in the eighth information, and the to third information. With one less item, while indicating other functions, it is also possible to indicate symbols from the penultimate M-th symbol to the penultimate symbol that are not occupied by the first message transmission, thereby reducing the overhead of indicating signaling.
  • the first information is used to indicate receiving the PSFCH, and the first symbol set includes two symbols before the symbols occupied by the PSFCH transmission and the The symbols occupied by the PSFCH transmission, the number of symbols occupied by the PSFCH transmission is (M-3), and the M is greater than or equal to 4; or the first information is used to indicate sending the PSFCH and the second information
  • the first symbol set is used to indicate frequency division multiplexing of the PSFCH, or the first information is used to indicate sending the PSFCH and the third information is used to indicate that the broadcast type of the PSFCH is multicast.
  • the number of symbols occupied by the PSFCH transmission is (M-2), and the M is greater than or equal to 3; or, the first The information is used to indicate that the PSFCH is sent and the second information is used to indicate that the PSFCH is not frequency division multiplexed, or the first information is used to indicate that the PSFCH is sent and the third information is used to indicate that the PSFCH is not frequency division multiplexed.
  • the broadcast type of the PSFCH is unicast, the first symbol set includes symbols occupied by the PSFCH transmission, the number of symbols occupied by the PSFCH transmission is (M-1), and M is greater than or equal to 2.
  • the eighth information includes first information, second information, third information and fourth information, and the fourth information is the same as the first information, At least one of the second information or the third information is used to indicate the symbols not occupied by the first message transmission in the penultimate M-th symbol to the penultimate symbol; wherein, the first The information is used to indicate sending or receiving the PSFCH; the second information is used to indicate whether the PSFCH is frequency division multiplexed; the third information is used to indicate the broadcast type of the PSFCH.
  • the number of symbols occupied by the PSFCH transmission is configured by signaling or predefined.
  • the value of M is configured by signaling or predefined.
  • the number of symbols in the time slot is S, the S is an integer, and the 6 ⁇ S ⁇ 14.
  • the communication method further includes: sending the first message according to the first symbol set and the symbols occupied by the time slot.
  • the communication method further includes: determining, according to the first symbol set, the number of symbols on the time slot that are not used for transmitting transport blocks, the number of symbols being used for The size of the transport block is determined, and the number of symbols is an integer greater than or equal to 0 and less than or equal to 5; the first indication information is also used to indicate the number of symbols.
  • a communication method is provided.
  • the communication method can be executed by a second communication device, or can also be executed by a chip or circuit used in the second communication device. This application is not limited to this.
  • the communication method includes: receiving first indication information, the first indication information is used to indicate a first symbol set, the first symbol set is a set of symbols not occupied by the first message transmission in the time slot, and the first symbol set is a set of symbols that are not occupied by the first message transmission in the time slot.
  • a symbol set includes at least one symbol from the penultimate M-th symbol to the penultimate symbol in the time slot, where M is an integer greater than or equal to 2; according to the first indication information, receiving the first information.
  • the communication method further includes: decoding the first message according to the first symbol set.
  • the penultimate M-th symbol to the penultimate symbol include symbols corresponding to the physical sidelink feedback control channel PSFCH.
  • the first indication information includes first information, second information and third information, and the first information, the second information and the third information At least one of the three pieces of information is used to indicate the first symbol set; wherein the first information is used to indicate sending or receiving the PSFCH; the second information is used to indicate whether the PSFCH is frequency division multiplexed ; The third information is used to indicate the broadcast type of the PSFCH.
  • the first information is used to indicate receiving the PSFCH, and the first symbol set includes two symbols before the symbols occupied by the PSFCH transmission and the The symbols occupied by the PSFCH transmission, the number of symbols occupied by the PSFCH transmission is (M-3), and the M is greater than or equal to 4; or the first information is used to indicate sending the PSFCH and the second information
  • the first symbol set is used to indicate frequency division multiplexing of the PSFCH, or the first information is used to indicate sending the PSFCH and the third information is used to indicate that the broadcast type of the PSFCH is multicast.
  • the number of symbols occupied by the PSFCH transmission is (M-2), and the M is greater than or equal to 3; or, the first The information is used to indicate sending the PSFCH and the second information is used to indicate the PSFCH No frequency division multiplexing, or the first information is used to indicate sending the PSFCH and the third information is used to indicate the broadcast type of the PSFCH is unicast, and the first symbol set includes the PSFCH transmission
  • the number of occupied symbols for PSFCH transmission is (M-1), and M is greater than or equal to 2.
  • the first indication information includes first information, second information, third information and fourth information, and the first information, the second information and at least one item of the third information and the fourth information are used to indicate the first symbol set; wherein the first information is used to indicate sending or receiving the PSFCH; the second information is used to indicate the first symbol set; The third information is used to indicate whether the PSFCH is frequency division multiplexed; the third information is used to indicate the broadcast type of the PSFCH.
  • the first symbol set further includes the first symbol and/or the last symbol of the time slot.
  • the first indication information includes a first field
  • the first field indicates the first symbol, the M-th symbol from the bottom to the bottom-M symbol. Two symbols are used to transmit the unoccupied symbols of the first message in the last symbol.
  • the first indication information includes first information, second information, third information, fifth information and sixth information, and the fifth information or the At least one of the sixth information, the first information, the second information and the third information is used to indicate the first symbol set; wherein the first information is used to indicate sending or Receive the PSFCH; the second information is used to indicate whether the PSFCH is frequency division multiplexed; the third information is used to indicate the broadcast type of the PSFCH; the fifth information is used to indicate the time slot Whether there is a signal transmitted by the cyclic prefix extension CPE before the first symbol; the sixth information is used to indicate whether the time slot is continuously transmitted in the time domain.
  • the first information is used to indicate reception of the PSFCH
  • the fifth information is used to indicate the existence of a CPE before the first symbol of the timeslot.
  • the transmitted signal, the first symbol set includes the two symbols before the symbol occupied by the PSFCH transmission and the symbols occupied by the PSFCH transmission, wherein the number of symbols occupied by the PSFCH transmission is (M-3), so Said M is greater than or equal to 4.
  • the first information is used to indicate receiving the PSFCH
  • the sixth information is used to indicate that the time slot is continuously transmitted in the time domain
  • the first set of symbols includes the two symbols before the symbols occupied by the PSFCH transmission and the symbols occupied by the PSFCH transmission, wherein the number of symbols occupied by the PSFCH transmission is (M-3), and the M is greater than or equal to 4.
  • the first information is used to indicate that the PSFCH is sent, and the fifth information is used to indicate that there is no CPE before the first symbol of the timeslot.
  • the transmitted signal and the sixth information are used to indicate that the time slot and the following time slot are continuously transmitted in the time domain.
  • the first symbol set includes the first symbol and the symbols occupied by the PSFCH transmission.
  • the previous two symbols and the symbols occupied by the PSFCH transmission are (M-3), and M is greater than or equal to 4.
  • the first information is used to indicate sending the PSFCH
  • the sixth information is used to indicate the time domain between the time slot and the previous time slot. Discontinuous transmission, and the sixth information is used to indicate that the time slot and the following time slot are continuously transmitted in the time domain
  • the first symbol set includes the first symbol, the symbols occupied by the PSFCH transmission
  • the previous two symbols and the symbols occupied by the PSFCH transmission are (M-3), and M is greater than or equal to 4.
  • the first information is used to indicate that the PSFCH is sent, and the fifth information is used to indicate that there is a signal transmitted by the CPE before the first symbol of the timeslot.
  • the sixth information is used to indicate that the time slot and the next time slot are transmitted discontinuously in the time domain, and the sixth information is used to indicate that the time slot and the previous time slot are continuously transmitted in the time domain.
  • the first symbol set includes the two symbols before the symbol occupied by the PSFCH transmission, the symbol occupied by the PSFCH transmission, and the last symbol, wherein the number of symbols occupied by the PSFCH transmission is (M- 3), the M is greater than or equal to 4.
  • the first information is used to indicate sending the PSFCH
  • the fifth information is used to indicate that there is no CPE before the first symbol of the timeslot.
  • the transmitted signal and the sixth information are used to indicate that the time slot is transmitted non-continuously in the time domain.
  • the first symbol set includes the first symbol and the two symbols before the PSFCH transmission occupied symbol. symbol, the symbol occupied by the PSFCH transmission, and the last symbol, wherein the number of symbols occupied by the PSFCH transmission is (M-3), and M is greater than or equal to 4.
  • the first information is used to indicate sending the PSFCH
  • the sixth information is used to indicate discontinuous transmission of the time slot in the time domain
  • the first symbol set includes the first symbol, the The two symbols before the symbols occupied by the PSFCH transmission, the symbols occupied by the PSFCH transmission, and the last symbol, wherein the number of symbols occupied by the PSFCH transmission is (M-3), and M is greater than or equal to 4.
  • the first information is used to indicate receiving the PSFCH
  • the second information is used to indicate the PSFCH frequency division multiplexing
  • the fifth The information is used to indicate that there is a signal transmitted by the CPE before the first symbol of the time slot
  • the first symbol set includes a symbol before the symbol occupied by the PSFCH transmission and the symbol occupied by the PSFCH transmission, wherein, the The number of symbols occupied by the PSFCH transmission is (M-2), and M is greater than or equal to 3.
  • the first information is used to indicate receiving the PSFCH
  • the second information is used to indicate the PSFCH frequency division multiplexing
  • the sixth information is used to indicate reception of the PSFCH.
  • the information is used to indicate that the time slot is continuously transmitted in the time domain
  • the first symbol set includes a symbol before the symbol occupied by the PSFCH transmission and the symbol occupied by the PSFCH transmission, wherein the PSFCH transmission occupied
  • the number of symbols is (M-2), and M is greater than or equal to 3.
  • the first information is used to indicate receiving the PSFCH
  • the third information is used to indicate that the broadcast type of the PSFCH is multicast
  • the The fifth information is used to indicate that there is a signal transmitted by the CPE before the first symbol of the time slot
  • the first symbol set includes a symbol before the symbol occupied by the PSFCH transmission and the symbol occupied by the PSFCH transmission, where , the number of symbols occupied by the PSFCH transmission is (M-2), and M is greater than or equal to 3.
  • the first information is used to indicate receiving the PSFCH
  • the third information is used to indicate that the broadcast type of the PSFCH is multicast
  • the The sixth information is used to indicate that the time slot is continuously transmitted in the time domain
  • the first symbol set includes a symbol before the symbol occupied by the PSFCH transmission and the symbol occupied by the PSFCH transmission, wherein the PSFCH transmission
  • the number of occupied symbols is (M-2), and M is greater than or equal to 3.
  • the first information is used to indicate sending the PSFCH
  • the second information is used to indicate the PSFCH frequency division multiplexing
  • the fifth information A signal used to indicate that there is no CPE transmission before the first symbol of the time slot
  • the sixth information is used to indicate that the time slot and the next time slot of the time slot are continuously transmitted in the time domain
  • the first symbol set includes the first symbol, a symbol before the symbol occupied by the PSFCH transmission, and the symbol occupied by the PSFCH transmission, wherein the number of symbols occupied by the PSFCH transmission is (M-2 ), the M is greater than or equal to 3.
  • the first information is used to indicate sending the PSFCH
  • the second information is used to indicate the PSFCH frequency division multiplexing
  • the sixth information The first symbol is used to indicate that the time slot and the previous time slot are transmitted discontinuously in the time domain
  • the sixth information is used to indicate that the time slot and the next time slot are continuously transmitted in the time domain.
  • the set includes the first symbol, a symbol before the symbol occupied by the PSFCH transmission, and the symbol occupied by the PSFCH transmission, where the number of symbols occupied by the PSFCH transmission is (M-2), and the M Greater than or equal to 3.
  • the first information is used to indicate sending the PSFCH
  • the third information is used to indicate the broadcast type of the PSFCH is multicast
  • the third information is used to indicate that the broadcast type of the PSFCH is multicast.
  • the fifth information is used to indicate that there is no signal transmitted by the CPE before the first symbol of the time slot
  • the sixth information is used to indicate that the time slot is continuous in the time domain with the time slot after the time slot.
  • the first symbol set includes the first symbol, a symbol before the symbol occupied by the PSFCH transmission, and the symbols occupied by the PSFCH transmission, wherein the number of symbols occupied by the PSFCH transmission is (M -2), the M is greater than or equal to 3.
  • the first information is used to indicate sending the PSFCH
  • the third information is used to indicate the broadcast type of the PSFCH is multicast
  • the third information is used to indicate that the broadcast type of the PSFCH is multicast.
  • the sixth information is used to indicate that the time slot and the previous time slot are transmitted discontinuously in the time domain, and the sixth information is used to indicate that the time slot and the next time slot are continuously transmitted in the time domain.
  • a symbol set includes the first symbol, a symbol before the symbol occupied by the PSFCH transmission, and the symbol occupied by the PSFCH transmission, where the number of symbols occupied by the PSFCH transmission is (M-2), so Said M is greater than or equal to 3.
  • the first information is used to instruct sending of the PSFCH
  • the second information is used to instruct the PSFCH frequency division multiplexing
  • the fifth information is used to A signal indicating that there is a CPE transmission before the first symbol of the time slot
  • the sixth information is used to indicate that the time slot and the following time slot are non-continuously transmitted in the time domain
  • the sixth information is used to Indicates that the time slot and the previous time slot are continuously transmitted in the time domain
  • the first symbol set includes a symbol before the symbol occupied by the PSFCH transmission, the symbol occupied by the PSFCH transmission, and the last symbol, where , the number of symbols occupied by the PSFCH transmission is (M-2), and M is greater than or equal to 3.
  • the first information is used to indicate sending the PSFCH
  • the third information is used to indicate the broadcast type of the PSFCH is multicast
  • the fifth information A signal used to indicate that there is a CPE transmission before the first symbol of the time slot
  • the sixth information is used to indicate discontinuous transmission in the time domain between the time slot and the following time slot
  • the sixth information It is used to indicate that the time slot and the previous time slot are continuously transmitted in the time domain
  • the first symbol set includes symbols occupied by the PSFCH transmission.
  • the first information is used to indicate sending the PSFCH
  • the second information is used to indicate the PSFCH frequency division multiplexing
  • the fifth information A signal used to indicate that there is no CPE transmission before the first symbol of the time slot
  • the sixth information is used to indicate that the time slot is discontinuously transmitted in the time domain
  • the first symbol set includes the The first symbol, the symbol before the symbol occupied by the PSFCH transmission, the symbol occupied by the PSFCH transmission, and the last symbol, wherein the number of symbols occupied by the PSFCH transmission is (M-2), and the M Greater than or equal to 3.
  • the first information is used to indicate sending the PSFCH
  • the second information is used to indicate the PSFCH frequency division multiplexing
  • the sixth information is used to indicate sending the PSFCH.
  • the information is used to indicate that the time slot is discontinuously transmitted in the time domain
  • the first symbol set includes the first symbol, a symbol before the symbol occupied by the PSFCH transmission, the symbol occupied by the PSFCH transmission, And the last symbol, wherein the number of symbols occupied by the PSFCH transmission is (M-2), and M is greater than or equal to 3.
  • the first information is used to indicate sending the PSFCH
  • the third information is used to indicate the broadcast type of the PSFCH is multicast
  • the third information is used to indicate that the broadcast type of the PSFCH is multicast.
  • the fifth information is used to indicate that there is no signal transmitted by CPE before the first symbol of the time slot
  • the sixth information is used to indicate that the time slot is discontinuously transmitted in the time domain.
  • the first symbol set includes The first symbol, the symbol before the symbol occupied by the PSFCH transmission, the symbol occupied by the PSFCH transmission, and the last symbol, wherein the number of symbols occupied by the PSFCH transmission is (M-2), so Said M is greater than or equal to 3.
  • the first information is used to indicate sending the PSFCH
  • the third information is used to indicate that the broadcast type of the PSFCH is multicast
  • the The sixth information is used to indicate that the time slot is discontinuously transmitted in the time domain.
  • the first symbol set includes the first symbol, a symbol before the symbol occupied by the PSFCH transmission, and the symbol occupied by the PSFCH transmission. symbols, and the last symbol, where the number of symbols occupied by the PSFCH transmission is (M-2), and M is greater than or equal to 3.
  • the first information is used to indicate receiving the PSFCH
  • the second information is used to indicate that the PSFCH is not frequency division multiplexed
  • the third information is used to indicate that the PSFCH is not frequency division multiplexed.
  • Five information is used to indicate that there is a signal transmitted by the CPE before the first symbol of the time slot.
  • the first symbol set includes the symbols occupied by the PSFCH transmission, where the number of symbols occupied by the PSFCH transmission is (M- 1), the M is greater than or equal to 2.
  • the first information is used to indicate receiving the PSFCH
  • the second information is used to indicate that the PSFCH is not frequency division multiplexed
  • the third information is used to indicate that the PSFCH is not frequency division multiplexed.
  • Six information is used to indicate that the time slot is continuously transmitted in the time domain.
  • the first symbol set includes symbols occupied by the PSFCH transmission, where the number of symbols occupied by the PSFCH transmission is (M-1), and the M is greater than or equal to 2.
  • the first information is used to indicate receiving the PSFCH
  • the third information is used to indicate that the broadcast type of the PSFCH is unicast
  • the The fifth information is used to indicate that there is a signal transmitted by the CPE before the first symbol of the time slot.
  • the first symbol set includes the symbols occupied by the PSFCH transmission, where the number of symbols occupied by the PSFCH transmission is (M -1), the M is greater than or equal to 2.
  • the first information is used to indicate receiving the PSFCH
  • the third information is used to indicate that the broadcast type of the PSFCH is unicast
  • the The sixth information is used to indicate that the time slot is continuously transmitted in the time domain.
  • the first symbol set includes symbols occupied by the PSFCH transmission, where the number of symbols occupied by the PSFCH transmission is (M-1), so Said M is greater than or equal to 2.
  • the first information is used to indicate sending the PSFCH
  • the second information is used to indicate that the PSFCH is not frequency division multiplexed
  • the fifth information is used to indicate that the PSFCH is not frequency division multiplexed.
  • the information is used to indicate that there is no signal transmitted by the CPE before the first symbol of the time slot
  • the sixth information is used to indicate that the time slot and the time slot after the time slot are continuously transmitted in the time domain.
  • the first symbol set includes the first symbol and the symbols occupied by the PSFCH transmission, where the number of symbols occupied by the PSFCH transmission is (M-1), and M is greater than or equal to 2.
  • the first information is used to indicate sending the PSFCH
  • the second information is used to indicate that the PSFCH is not frequency division multiplexed
  • the sixth information is used to indicate that the PSFCH is not frequency division multiplexed.
  • the information is used to indicate that the time slot and the previous time slot are transmitted discontinuously in the time domain
  • the sixth information is used to indicate that the time slot and the next time slot are continuously transmitted in the time domain.
  • the first The symbol set includes the first symbol and the symbols occupied by the PSFCH transmission, where the number of symbols occupied by the PSFCH transmission is (M-1), and M is greater than or equal to 2.
  • the first information is used to indicate sending the PSFCH
  • the third information is used to indicate the broadcast type of the PSFCH is unicast
  • the third information is used to indicate that the broadcast type of the PSFCH is unicast.
  • the fifth information is used to indicate that there is no signal transmitted by CPE before the first symbol of the time slot
  • the sixth information is used to indicate that the time slot and the following time slot are continuously transmitted in the time domain
  • the third A symbol set includes the first symbol and the symbols occupied by the PSFCH transmission, where the number of symbols occupied by the PSFCH transmission is (M-1), and M is greater than or equal to 2.
  • the first information is used to indicate sending the PSFCH
  • the third information is used to indicate the broadcast type of the PSFCH is unicast
  • the third information is used to indicate that the broadcast type of the PSFCH is unicast.
  • the sixth information is used to indicate that the time slot and the previous time slot are transmitted discontinuously in the time domain, and the sixth information is used to indicate that the time slot and the next time slot are continuously transmitted in the time domain.
  • a symbol set includes the first symbol and the symbols occupied by the PSFCH transmission, where the number of symbols occupied by the PSFCH transmission is (M-1), and M is greater than or equal to 2.
  • the first information is used to indicate sending the PSFCH
  • the second information is used to indicate that the PSFCH is not frequency division multiplexed
  • the fifth information is used to indicate that the PSFCH is sent.
  • the sixth information is used to indicate discontinuous transmission in the time domain between the time slot and the following time slot, and the time slot is different from the previous time slot.
  • One time slot is continuously transmitted in the time domain, and the first symbol set includes the symbols occupied by the PSFCH transmission and the last symbol, where the number of symbols occupied by the PSFCH transmission is (M-1), and the M is greater than or equal to 2.
  • the first information is used to indicate sending the PSFCH
  • the third information is used to indicate the broadcast type of the PSFCH is unicast
  • the fifth information is used to indicate that the broadcast type of the PSFCH is unicast.
  • the sixth information is used to indicate that the time slot and the following time slot are non-continuously transmitted in the time domain
  • the sixth information The information is used to indicate that the time slot and the previous time slot are continuously transmitted in the time domain.
  • the first symbol set includes the symbols occupied by the PSFCH transmission and the last symbol, wherein the symbols occupied by the PSFCH transmission
  • the number is (M-1), and M is greater than or equal to 2.
  • the first information is used to indicate sending the PSFCH
  • the second information is used to indicate that the PSFCH is not frequency division multiplexed
  • the fifth information is used to indicate that the PSFCH is not frequency division multiplexed.
  • the information is used to indicate that there is no signal transmitted by CPE before the first symbol of the time slot
  • the sixth information is used to indicate that the time slot is discontinuously transmitted in the time domain
  • the first symbol set includes all The first symbol, the symbol occupied by the PSFCH transmission, and the last symbol, wherein the number of symbols occupied by the PSFCH transmission is (M-1), and M is greater than or equal to 2.
  • the first information is used to indicate sending the PSFCH
  • the second information is used to indicate that the PSFCH is not frequency division multiplexed
  • the third information is used to indicate that the PSFCH is not frequency division multiplexed.
  • the six information is used to indicate that the time slot is non-continuously transmitted in the time domain.
  • the first symbol set includes the first symbol, the symbols occupied by the PSFCH transmission, and the last symbol, wherein the PSFCH transmission
  • the number of occupied symbols is (M-1), and M is greater than or equal to 2.
  • the first information is used to indicate sending the PSFCH
  • the third information is used to indicate the broadcast type of the PSFCH is unicast
  • the third information is used to indicate that the broadcast type of the PSFCH is unicast.
  • the fifth information is used to indicate that there is no signal transmitted by CPE before the first symbol of the time slot
  • the sixth information is used to indicate that the time slot is discontinuously transmitted in the time domain.
  • the first symbol set includes The first symbol, the symbol occupied by the PSFCH transmission, and the last symbol, wherein the number of symbols occupied by the PSFCH transmission is (M-1), and M is greater than or equal to 2.
  • the first information is used to indicate sending the PSFCH
  • the third information is used to indicate the broadcast type of the PSFCH is unicast
  • the The sixth information is used to indicate that the time slot is discontinuously transmitted in the time domain
  • the first symbol set includes the first symbol, the symbol occupied by the PSFCH transmission, and the last symbol, wherein the PSFCH The number of symbols occupied by transmission is (M-1), and M is greater than or equal to 2.
  • the eighth information includes first information, second information, third information and fourth information, and the fourth information is the same as the first information, At least one of the second information or the third information is used to indicate the symbols not occupied by the first message transmission in the penultimate M-th symbol to the penultimate symbol; wherein, the first The information is used to indicate sending or receiving the PSFCH; the second information is used to indicate whether the PSFCH is frequency division multiplexed; the third information is used to indicate the broadcast type of the PSFCH.
  • the value of M is configured by signaling or predefined.
  • the number of symbols in the time slot is S
  • the S is an integer
  • the 6 ⁇ S ⁇ 14 is 6
  • the first message includes data and/or control information received by the second communication device.
  • a communication method is provided.
  • the communication method can be executed by the first communication device, or can also be executed by a chip or circuit used in the first communication device. This application is not limited to this.
  • the communication method includes: determining the number of symbols on the time slot that are not used to send the transport block, the number of symbols is used to determine the size of the transport block, the number of symbols is an integer greater than or equal to 0 and less than or equal to 5 ;Send first indication information, the first indication information is used to indicate the number of symbols.
  • the first communication device determines the number of symbols in the time slot that are not used for transmitting the transport block, thereby ensuring that the size of the transport block in different time slots for the same data packet is the same.
  • the first communication device sends the number of symbols not used for transmitting the transport block on the determined time slot to the receiving end, which can ensure that the receiving end correctly combines and decodes the same TB when transmitted on different time slots. Furthermore, the transmission accuracy of the transmission block is improved, thereby improving the transmission efficiency.
  • the communication method further includes: determining the number of subcarriers N RE allocated to the transmission channel according to the number of symbols; determining the transmission block according to the N RE the size of.
  • the number of symbols includes the number of symbols in the first symbol and/or the last symbol on the time slot that are not used for transmitting the transport block.
  • the first indication information includes a first field indicating that the first symbol and/or the last symbol on the time slot are not used. The number of symbols used to send the transport block.
  • determining the number of symbols on the time slot that are not used for transmitting transport blocks includes: determining that the time slot is not used for transmitting based on the first information and the second information. The number of symbols in the transport block; wherein the first information is used to indicate whether there is a signal transmitted by the cyclic prefix extension CPE before the first symbol of the time slot; the second information is used to indicate that the time slot is Whether to transmit continuously on the domain.
  • the first communication device can determine the first symbol and/or the last symbol on the time slot according to whether there is a signal transmitted by the cyclic prefix extension CPE before the first symbol of the time slot and whether the time slot is continuously transmitted in the time domain. Whether this is a symbol that is not used to send transport blocks. In this way, the first communication device can combine the actual transmission conditions of the time slot and use the first symbol and/or the last symbol on the time slot to transmit the transmission block as much as possible, thereby improving the transmission block transmission. accuracy and transmission efficiency.
  • determining the number of symbols not used for transmitting transport blocks on the time slot includes: determining the time slot according to the first information or the second information and the third information. The number of symbols on the slot that are not used to send transport blocks; wherein the first information is used to indicate whether there is a signal transmitted by the cyclic prefix extension CPE before the first symbol of the time slot; the second information is used to indicate that the Whether the time slot is continuously transmitted in the time domain; the third information is used to indicate whether the first symbol or the last symbol is a symbol not occupied by the transmission block.
  • determining the number of subcarriers N RE allocated to the transmission channel according to the number of symbols includes: according to Determine the N RE ; where, is the number of subcarriers in the physical resource block; is the number of symbols in the time slot; is the number of symbols among the first symbol and the last symbol that are not used to send the transport block, and The value is 0, 1 or 2.
  • the number of symbols not used for transmitting transport blocks on the time slot also includes the number of symbols corresponding to the physical sidelink feedback control channel PSFCH, wherein, The number of symbols corresponding to the PSFCH is greater than or equal to K and less than or equal to K+2, where K is the number of symbols occupied by the PSFCH transmission.
  • the first indication information includes a first field indicating the first symbol, the symbol corresponding to the PSFCH, and the The number of symbols in the last symbol that are not used to send the transport block.
  • determining the number of symbols not used for transmitting transport blocks on the time slot includes: determining the time slot according to the first information, the second information and the third information. The number of symbols that are not used to send transport blocks; wherein the first information is used to indicate whether there is a signal transmitted by the cyclic prefix extension CPE before the first symbol of the timeslot; the second information is used to indicate that the Whether the time slots are continuously transmitted in the time domain; the third information is used to indicate at least one of the following: sending or receiving the PSFCH; whether the PSFCH is frequency division multiplexed; and the broadcast type of the PSFCH.
  • the first communication device can extend the signal transmitted by the CPE according to whether there is a cyclic prefix extension before the first symbol of the time slot, whether the time slot is continuously transmitted in the time domain, and at least one of the following: whether the time slot is sending or receiving PSFCH, PSFCH Whether frequency division multiplexing, PSFCH
  • the broadcast type is used to determine the first symbol on the time slot, the number of symbols corresponding to the PSFCH, and whether the last symbol contains symbols that are not used to send transport blocks.
  • the first communication device can combine the actual transmission conditions of the time slot and use the first symbol on the time slot, the number of symbols corresponding to the PSFCH, and the symbols in the last symbol that can transmit the transport block as much as possible to transmit the transport block, and then It can improve the accuracy of transmission block transmission and the efficiency of transmission.
  • determining the number of subcarriers N RE allocated to the transmission channel according to the number of symbols includes: according to Determine the N RE ; where, is the number of subcarriers in the physical resource block; is the number of symbols in the time slot; is the number of symbols among the first symbol and the last symbol that are not used to send the transport block, and The value is 0, 1 or 2; is the number of symbols among the symbols corresponding to the PSFCH that are not used to send the transport block.
  • determining the number of subcarriers N RE allocated to the transmission channel according to the number of symbols includes: according to Determine the N RE ; where, is the number of subcarriers in the physical resource block; is the number of symbols in the time slot; is the number of symbols on the time slot that are not used to send transport blocks.
  • the communication method further includes: sending the transport block.
  • the communication method includes: determining a first symbol set, the first symbol set including the first symbol and the M-th symbol from the last in the time slot to at least one symbol in the penultimate symbol and the last symbol, the M is an integer greater than or equal to 2; the determining the number of symbols not used for transmitting transport blocks on the time slot includes: according to the first symbol Set to determine the number of symbols on the time slot that are not used for transmitting transport blocks.
  • the value of M is configured by signaling or predefined.
  • the value of K is configured by signaling or predefined.
  • the number of symbols in the time slot is S
  • the S is an integer
  • the 6 ⁇ S ⁇ 14 is 6
  • a communication method is provided.
  • the communication method can be executed by a second communication device, or can also be executed by a chip or circuit used in the second communication device. This application is not limited to this.
  • the communication method includes: receiving first indication information, the first indication information is used to indicate the number of symbols on the time slot that are not used for transmitting transport blocks, and the number of symbols is an integer greater than or equal to 0 and less than or equal to 5. ; Receive the transport block according to the first indication information.
  • the number N RE of subcarriers allocated to the transmission channel is determined according to the number of symbols; the size of the transport block is determined according to the N RE .
  • the communication method further includes: receiving the transport block according to the size of the transport block.
  • the number of symbols includes the number of symbols in the first symbol and/or the last symbol on the time slot that are not used for transmitting the transport block.
  • the first indication information includes a first field indicating that the first symbol and/or the last symbol on the time slot are not used. The number of symbols used to send the transport block.
  • determining the number of subcarriers N RE allocated to the transmission channel according to the number of symbols includes: according to Determine the N RE ; where, is the number of subcarriers in the physical resource block; is the number of symbols in the time slot; is the number of symbols among the first symbol and the last symbol that are not used to send the transport block, and The value is 0, 1 or 2.
  • the number of symbols not used for transmitting transport blocks on the time slot also includes the number of symbols corresponding to the physical sidelink feedback control channel PSFCH, wherein, The number of symbols corresponding to the PSFCH is greater than or equal to K and less than or equal to K+2, where K is the number of symbols occupied by the PSFCH transmission.
  • the first indication information includes a first field indicating the first symbol, the symbol corresponding to the PSFCH, and the The number of symbols in the last symbol that are not used to send the transport block.
  • determining the number of subcarriers N RE allocated to the transmission channel according to the number of symbols includes: according to Determine the N RE ; where, is the number of subcarriers in the physical resource block; is the number of symbols in the time slot; is the number of symbols among the first symbol and the last symbol that are not used to send the transport block, and The value is 0, 1 or 2; is the number of symbols among the symbols corresponding to the PSFCH that are not used to send the transport block.
  • determining the number of subcarriers N RE allocated to the transmission channel according to the number of symbols includes: according to Determine the N RE ; where, is the number of subcarriers in the physical resource block; is the number of symbols in the time slot; is the number of symbols on the time slot that are not used to send transport blocks.
  • the value of K is configured by signaling or predefined.
  • the number of symbols in the time slot is S
  • the S is an integer
  • the 6 ⁇ S ⁇ 14 is 6
  • a communication device may be the above-mentioned first communication device or a chip or circuit of the first communication device, which is not limited in this application.
  • the communication device includes: a processing unit configured to determine a first set of symbols, the first set of symbols being a set of symbols not occupied by the first message transmission in the time slot, the first set of symbols including the set of symbols in the time slot. At least one symbol from the penultimate M-th symbol to the penultimate symbol, where M is an integer greater than or equal to 2; the transceiver unit is configured to send first indication information, and the first indication information is used to indicate the First collection of symbols.
  • the penultimate M-th symbol to the penultimate symbol include symbols corresponding to the physical sidelink feedback control channel PSFCH.
  • the first indication information includes first information, second information and third information, and the first information, the second information and the third information At least one of the three pieces of information is used to indicate the first symbol set; wherein the first information is used to indicate sending or receiving the PSFCH; the second information is used to indicate whether the PSFCH is frequency division multiplexed ; The third information is used to indicate the broadcast type of the PSFCH.
  • the first information is used to indicate receiving the PSFCH, and the first symbol set includes two symbols before the symbols occupied by the PSFCH transmission and the The symbols occupied by the PSFCH transmission, the number of symbols occupied by the PSFCH transmission is (M-3), and the M is greater than or equal to 4; or the first information is used to indicate sending the PSFCH and the second information
  • the first symbol set is used to indicate frequency division multiplexing of the PSFCH, or the first information is used to indicate sending the PSFCH and the third information is used to indicate that the broadcast type of the PSFCH is multicast.
  • the number of symbols occupied by the PSFCH transmission is (M-2), and the M is greater than or equal to 3; or, the first The information is used to indicate that the PSFCH is sent and the second information is used to indicate that the PSFCH is not frequency division multiplexed, or the first information is used to indicate that the PSFCH is sent and the third information is used to indicate that the PSFCH is not frequency division multiplexed.
  • the broadcast type of the PSFCH is unicast, the first symbol set includes symbols occupied by the PSFCH transmission, the number of symbols occupied by the PSFCH transmission is (M-1), and M is greater than or equal to 2.
  • the first indication information includes first information, second information, third information and fourth information, and the first information, the second information and at least one item of the third information and the fourth information are used to indicate the first symbol set; wherein the first information is used to indicate sending or receiving the PSFCH; the second information is used to indicate the first symbol set; The third information is used to indicate whether the PSFCH is frequency division multiplexed; the third information is used to indicate the broadcast type of the PSFCH.
  • the first symbol set further includes the first symbol and/or the last symbol of the time slot.
  • the first indication information includes a first field indicating the first symbol, the M-th symbol from the bottom to the bottom-M symbol. Two symbols are used to transmit the unoccupied symbols of the first message in the last symbol.
  • the first indication information includes first information, second information, third information, fifth information and sixth information, and the fifth information or the The sixth information, the first information, the second information and the At least one item of the third information is used to indicate the first symbol set; wherein the first information is used to indicate sending or receiving the PSFCH; the second information is used to indicate whether the PSFCH is frequency divided Multiplexing; the third information is used to indicate the broadcast type of the PSFCH; the fifth information is used to indicate whether there is a signal transmitted by the cyclic prefix extension CPE before the first symbol of the timeslot; the sixth information The information is used to indicate whether the time slot is continuously transmitted in the time domain.
  • the first information is used to indicate reception of the PSFCH
  • the fifth information is used to indicate the existence of a CPE before the first symbol of the timeslot.
  • the transmitted signal, the first symbol set includes the two symbols before the symbol occupied by the PSFCH transmission and the symbols occupied by the PSFCH transmission, wherein the number of symbols occupied by the PSFCH transmission is (M-3), so Said M is greater than or equal to 4.
  • the first information is used to indicate receiving the PSFCH
  • the sixth information is used to indicate that the time slot is continuously transmitted in the time domain
  • the first set of symbols includes the two symbols before the symbols occupied by the PSFCH transmission and the symbols occupied by the PSFCH transmission, wherein the number of symbols occupied by the PSFCH transmission is (M-3), and the M is greater than or equal to 4.
  • the first information is used to indicate that the PSFCH is sent, and the fifth information is used to indicate that there is no CPE before the first symbol of the timeslot.
  • the transmitted signal and the sixth information are used to indicate that the time slot and the following time slot are continuously transmitted in the time domain.
  • the first symbol set includes the first symbol and the symbols occupied by the PSFCH transmission.
  • the previous two symbols and the symbols occupied by the PSFCH transmission are (M-3), and M is greater than or equal to 4.
  • the first information is used to indicate sending the PSFCH
  • the sixth information is used to indicate the time domain between the time slot and the previous time slot. Discontinuous transmission, and the sixth information is used to indicate that the time slot and the following time slot are continuously transmitted in the time domain
  • the first symbol set includes the first symbol, the symbols occupied by the PSFCH transmission
  • the previous two symbols and the symbols occupied by the PSFCH transmission are (M-3), and M is greater than or equal to 4.
  • the first information is used to indicate that the PSFCH is sent, and the fifth information is used to indicate that there is a signal transmitted by the CPE before the first symbol of the timeslot.
  • the sixth information is used to indicate that the time slot and the next time slot are transmitted discontinuously in the time domain, and the sixth information is used to indicate that the time slot and the previous time slot are continuously transmitted in the time domain.
  • the first symbol set includes the two symbols before the symbol occupied by the PSFCH transmission, the symbol occupied by the PSFCH transmission, and the last symbol, wherein the number of symbols occupied by the PSFCH transmission is (M- 3), the M is greater than or equal to 4.
  • the first information is used to indicate that the PSFCH is sent, and the fifth information is used to indicate that there is no CPE before the first symbol of the timeslot.
  • the transmitted signal and the sixth information are used to indicate that the time slot is transmitted non-continuously in the time domain.
  • the first symbol set includes the first symbol and the two symbols before the PSFCH transmission occupied symbol. symbol, the symbol occupied by the PSFCH transmission, and the last symbol, wherein the number of symbols occupied by the PSFCH transmission is (M-3), and M is greater than or equal to 4.
  • the first information is used to indicate sending the PSFCH
  • the sixth information is used to indicate discontinuous transmission of the time slot in the time domain
  • the first symbol set includes the first symbol, the two symbols before the symbols occupied by the PSFCH transmission, the symbols occupied by the PSFCH transmission, and the last symbol, wherein the number of symbols occupied by the PSFCH transmission is (M-3), and M is greater than or equal to 4.
  • the first information is used to indicate receiving the PSFCH
  • the second information is used to indicate the PSFCH frequency division multiplexing
  • the fifth The information is used to indicate that there is a signal transmitted by the CPE before the first symbol of the time slot
  • the first symbol set includes a symbol before the symbol occupied by the PSFCH transmission and the symbol occupied by the PSFCH transmission, wherein, the The number of symbols occupied by the PSFCH transmission is (M-2), and M is greater than or equal to 3.
  • the first information is used to indicate receiving the PSFCH
  • the second information is used to indicate the PSFCH frequency division multiplexing
  • the sixth information is used to indicate receiving the PSFCH.
  • the information is used to indicate that the time slot is continuously transmitted in the time domain, and the first symbol set includes a symbol before the symbol occupied by the PSFCH transmission and the symbol occupied by the PSFCH transmission, wherein the PSFCH transmission occupied
  • the number of symbols is (M-2), and M is greater than or equal to 3.
  • the first information is used to indicate receiving the PSFCH
  • the third information is used to indicate that the broadcast type of the PSFCH is multicast
  • the The fifth information is used to indicate that there is a signal transmitted by the CPE before the first symbol of the time slot
  • the first symbol set includes a symbol before the symbol occupied by the PSFCH transmission and the symbol occupied by the PSFCH transmission, where , the number of symbols occupied by the PSFCH transmission is (M-2), and M is greater than or equal to 3.
  • the first information is used to indicate receiving the PSFCH
  • the third information is used to indicate that the broadcast type of the PSFCH is multicast
  • the The sixth information is used to indicate that the time slot is continuously transmitted in the time domain
  • the first symbol set includes a symbol before the symbol occupied by the PSFCH transmission and the symbol occupied by the PSFCH transmission, wherein the PSFCH transmission
  • the number of occupied symbols is (M-2), and M is greater than or equal to 3.
  • the first information is used to indicate sending the PSFCH
  • the second information is used to indicate the PSFCH frequency division multiplexing
  • the fifth information A signal used to indicate that there is no CPE transmission before the first symbol of the time slot
  • the sixth information is used to indicate that the time slot and the next time slot of the time slot are continuously transmitted in the time domain
  • the first symbol set includes the first symbol, a symbol before the symbol occupied by the PSFCH transmission, and the symbol occupied by the PSFCH transmission, wherein the number of symbols occupied by the PSFCH transmission is (M-2 ), the M is greater than or equal to 3.
  • the first information is used to indicate sending the PSFCH
  • the second information is used to indicate the PSFCH frequency division multiplexing
  • the sixth information The first symbol is used to indicate that the time slot and the previous time slot are transmitted discontinuously in the time domain
  • the sixth information is used to indicate that the time slot and the next time slot are continuously transmitted in the time domain.
  • the set includes the first symbol, a symbol before the symbol occupied by the PSFCH transmission, and the symbol occupied by the PSFCH transmission, where the number of symbols occupied by the PSFCH transmission is (M-2), and the M Greater than or equal to 3.
  • the first information is used to indicate sending the PSFCH
  • the third information is used to indicate that the broadcast type of the PSFCH is multicast
  • the third information is used to indicate that the broadcast type of the PSFCH is multicast.
  • the fifth information is used to indicate that there is no signal transmitted by the CPE before the first symbol of the time slot
  • the sixth information is used to indicate that the time slot is continuous in the time domain with the time slot after the time slot.
  • the first symbol set includes the first symbol, a symbol before the symbol occupied by the PSFCH transmission, and the symbols occupied by the PSFCH transmission, wherein the number of symbols occupied by the PSFCH transmission is (M -2), the M is greater than or equal to 3.
  • the first information is used to indicate sending the PSFCH
  • the third information is used to indicate that the broadcast type of the PSFCH is multicast
  • the third information is used to indicate that the broadcast type of the PSFCH is multicast.
  • the sixth information is used to indicate that the time slot and the previous time slot are transmitted discontinuously in the time domain, and the sixth information is used to indicate that the time slot and the next time slot are continuously transmitted in the time domain.
  • a symbol set includes the first symbol, a symbol before the symbol occupied by the PSFCH transmission, and the symbol occupied by the PSFCH transmission, where the number of symbols occupied by the PSFCH transmission is (M-2), so Said M is greater than or equal to 3.
  • the first information is used to instruct sending of the PSFCH
  • the second information is used to instruct the PSFCH frequency division multiplexing
  • the fifth information is used to A signal indicating that there is a CPE transmission before the first symbol of the time slot
  • the sixth information is used to indicate that the time slot and the following time slot are non-continuously transmitted in the time domain
  • the sixth information is used to Indicates that the time slot and the previous time slot are continuously transmitted in the time domain
  • the first symbol set includes a symbol before the symbol occupied by the PSFCH transmission, the symbol occupied by the PSFCH transmission, and the last symbol, where , the number of symbols occupied by the PSFCH transmission is (M-2), and M is greater than or equal to 3.
  • the first information is used to indicate sending the PSFCH
  • the third information is used to indicate that the broadcast type of the PSFCH is multicast
  • the fifth information A signal used to indicate that there is a CPE transmission before the first symbol of the time slot
  • the sixth information is used to indicate discontinuous transmission in the time domain between the time slot and the following time slot
  • the sixth information Used to indicate that the time slot and the previous time slot are continuously transmitted in the time domain
  • the first symbol set includes a symbol before the symbol occupied by the PSFCH transmission, the symbol occupied by the PSFCH transmission, and the last symbol , wherein the number of symbols occupied by the PSFCH transmission is (M-2), and M is greater than or equal to 3.
  • the first information is used to indicate sending the PSFCH
  • the second information is used to indicate the PSFCH frequency division multiplexing
  • the fifth information A signal used to indicate that there is no CPE transmission before the first symbol of the time slot
  • the sixth information is used to indicate that the time slot is discontinuously transmitted in the time domain
  • the first symbol set includes the The first symbol, the symbol before the symbol occupied by the PSFCH transmission, the symbol occupied by the PSFCH transmission, and the last symbol, wherein the number of symbols occupied by the PSFCH transmission is (M-2), and the M Greater than or equal to 3.
  • the first information is used to indicate sending the PSFCH
  • the second information is used to indicate the PSFCH frequency division multiplexing
  • the sixth information is used to indicate the PSFCH frequency division multiplexing.
  • the information is used to indicate that the time slot is discontinuously transmitted in the time domain
  • the first symbol set includes the first symbol, a symbol before the symbol occupied by the PSFCH transmission, the symbol occupied by the PSFCH transmission, And the last symbol, wherein the number of symbols occupied by the PSFCH transmission is (M-2), and M is greater than or equal to 3.
  • the first information is used to indicate sending the PSFCH
  • the third information is used to indicate that the broadcast type of the PSFCH is multicast
  • the third information is used to indicate that the broadcast type of the PSFCH is multicast.
  • Five messages are used to indicate that the first symbol of the slot does not exist before
  • the signal transmitted by the CPE and the sixth information are used to indicate that the time slot is discontinuously transmitted in the time domain.
  • the first symbol set includes the first symbol and the one before the symbol occupied by the PSFCH transmission. symbol, the symbol occupied by the PSFCH transmission, and the last symbol, wherein the number of symbols occupied by the PSFCH transmission is (M-2), and M is greater than or equal to 3.
  • the first information is used to indicate sending the PSFCH
  • the third information is used to indicate that the broadcast type of the PSFCH is multicast
  • the The sixth information is used to indicate that the time slot is discontinuously transmitted in the time domain.
  • the first symbol set includes the first symbol, a symbol before the symbol occupied by the PSFCH transmission, and the symbol occupied by the PSFCH transmission. symbols, and the last symbol, where the number of symbols occupied by the PSFCH transmission is (M-2), and M is greater than or equal to 3.
  • the first information is used to indicate receiving the PSFCH
  • the second information is used to indicate that the PSFCH is not frequency division multiplexed
  • the third Five information is used to indicate that there is a signal transmitted by the CPE before the first symbol of the time slot.
  • the first symbol set includes the symbols occupied by the PSFCH transmission, where the number of symbols occupied by the PSFCH transmission is (M- 1), the M is greater than or equal to 2.
  • the first information is used to indicate receiving the PSFCH
  • the second information is used to indicate that the PSFCH is not frequency division multiplexed
  • the third Six information is used to indicate that the time slot is continuously transmitted in the time domain.
  • the first symbol set includes symbols occupied by the PSFCH transmission, where the number of symbols occupied by the PSFCH transmission is (M-1), and the M is greater than or equal to 2.
  • the first information is used to indicate receiving the PSFCH
  • the third information is used to indicate that the broadcast type of the PSFCH is unicast
  • the The fifth information is used to indicate that there is a signal transmitted by the CPE before the first symbol of the time slot.
  • the first symbol set includes the symbols occupied by the PSFCH transmission, where the number of symbols occupied by the PSFCH transmission is (M -1), the M is greater than or equal to 2.
  • the first information is used to indicate receiving the PSFCH
  • the third information is used to indicate that the broadcast type of the PSFCH is unicast
  • the The sixth information is used to indicate that the time slot is continuously transmitted in the time domain.
  • the first symbol set includes symbols occupied by the PSFCH transmission, where the number of symbols occupied by the PSFCH transmission is (M-1), so Said M is greater than or equal to 2.
  • the first information is used to indicate sending the PSFCH
  • the second information is used to indicate that the PSFCH is not frequency division multiplexed
  • the fifth information is used to indicate that the PSFCH is not frequency division multiplexed.
  • the information is used to indicate that there is no signal transmitted by the CPE before the first symbol of the time slot
  • the sixth information is used to indicate that the time slot and the time slot after the time slot are continuously transmitted in the time domain.
  • the first symbol set includes the first symbol and the symbols occupied by the PSFCH transmission, where the number of symbols occupied by the PSFCH transmission is (M-1), and M is greater than or equal to 2.
  • the first information is used to indicate sending the PSFCH
  • the second information is used to indicate that the PSFCH is not frequency division multiplexed
  • the sixth information is used to indicate that the PSFCH is not frequency division multiplexed.
  • the information is used to indicate that the time slot and the previous time slot are transmitted discontinuously in the time domain
  • the sixth information is used to indicate that the time slot and the next time slot are continuously transmitted in the time domain.
  • the first The symbol set includes the first symbol and the symbols occupied by the PSFCH transmission, where the number of symbols occupied by the PSFCH transmission is (M-1), and M is greater than or equal to 2.
  • the first information is used to indicate sending the PSFCH
  • the third information is used to indicate the broadcast type of the PSFCH is unicast
  • the third information is used to indicate that the broadcast type of the PSFCH is unicast.
  • the fifth information is used to indicate that there is no signal transmitted by CPE before the first symbol of the time slot
  • the sixth information is used to indicate that the time slot and the following time slot are continuously transmitted in the time domain
  • the third A symbol set includes the first symbol and the symbols occupied by the PSFCH transmission, where the number of symbols occupied by the PSFCH transmission is (M-1), and M is greater than or equal to 2.
  • the first information is used to indicate sending the PSFCH
  • the third information is used to indicate the broadcast type of the PSFCH is unicast
  • the third information is used to indicate that the broadcast type of the PSFCH is unicast.
  • the sixth information is used to indicate that the time slot and the previous time slot are transmitted discontinuously in the time domain, and the sixth information is used to indicate that the time slot and the next time slot are continuously transmitted in the time domain.
  • a symbol set includes the first symbol and the symbols occupied by the PSFCH transmission, where the number of symbols occupied by the PSFCH transmission is (M-1), and M is greater than or equal to 2.
  • the first information is used to indicate that the PSFCH is sent
  • the second information is used to indicate that the PSFCH is not frequency division multiplexed
  • the fifth information is used to indicate that the PSFCH is sent.
  • the sixth information is used to indicate discontinuous transmission in the time domain between the time slot and the following time slot, and the time slot is different from the previous time slot.
  • One time slot is continuously transmitted in the time domain, and the first symbol set includes the symbols occupied by the PSFCH transmission and the last symbol, in which , the number of symbols occupied by the PSFCH transmission is (M-1), and M is greater than or equal to 2.
  • the first information is used to indicate sending the PSFCH
  • the third information is used to indicate that the broadcast type of the PSFCH is unicast
  • the fifth information The signal number used to indicate that there is a CPE transmission before the first symbol of the time slot
  • the sixth information is used to indicate that the time slot and the following time slot are non-continuously transmitted in the time domain
  • the sixth information The information is used to indicate that the time slot and the previous time slot are continuously transmitted in the time domain.
  • the first symbol set includes the symbols occupied by the PSFCH transmission and the last symbol, wherein the symbols occupied by the PSFCH transmission
  • the number is (M-1), and M is greater than or equal to 2.
  • the first information is used to indicate sending the PSFCH
  • the second information is used to indicate that the PSFCH is not frequency division multiplexed
  • the fifth information is used to indicate that the PSFCH is not frequency division multiplexed.
  • the information is used to indicate that there is no signal transmitted by CPE before the first symbol of the time slot
  • the sixth information is used to indicate that the time slot is discontinuously transmitted in the time domain
  • the first symbol set includes all The first symbol, the symbol occupied by the PSFCH transmission, and the last symbol, wherein the number of symbols occupied by the PSFCH transmission is (M-1), and M is greater than or equal to 2.
  • the first information is used to indicate sending the PSFCH
  • the second information is used to indicate that the PSFCH is not frequency division multiplexed
  • the third information is used to indicate that the PSFCH is not frequency division multiplexed.
  • the six information is used to indicate that the time slot is non-continuously transmitted in the time domain.
  • the first symbol set includes the first symbol, the symbols occupied by the PSFCH transmission, and the last symbol, wherein the PSFCH transmission
  • the number of occupied symbols is (M-1), and M is greater than or equal to 2.
  • the first information is used to indicate sending the PSFCH
  • the third information is used to indicate the broadcast type of the PSFCH is unicast
  • the third information is used to indicate that the broadcast type of the PSFCH is unicast.
  • the fifth information is used to indicate that there is no signal transmitted by CPE before the first symbol of the time slot
  • the sixth information is used to indicate that the time slot is discontinuously transmitted in the time domain.
  • the first symbol set includes The first symbol, the symbol occupied by the PSFCH transmission, and the last symbol, wherein the number of symbols occupied by the PSFCH transmission is (M-1), and M is greater than or equal to 2.
  • the first information is used to indicate sending the PSFCH
  • the third information is used to indicate the broadcast type of the PSFCH is unicast
  • the The sixth information is used to indicate that the time slot is discontinuously transmitted in the time domain
  • the first symbol set includes the first symbol, the symbol occupied by the PSFCH transmission, and the last symbol, wherein the PSFCH The number of symbols occupied by transmission is (M-1), and M is greater than or equal to 2.
  • the first indication information includes first information, second information, third information, fifth information, sixth information, and seventh information, and the The seventh information and at least one of the first information, the second information, the third information, the fifth information and the sixth information are used to indicate the first symbol set; wherein, The first information is used to indicate sending or receiving the PSFCH; the second information is used to indicate whether the PSFCH is frequency division multiplexed; the third information is used to indicate the broadcast type of the PSFCH; the third information is used to indicate whether the PSFCH is frequency division multiplexed; the third information is used to indicate the broadcast type of the PSFCH; The fifth information is used to indicate whether there is a signal transmitted by cyclic prefix extension CPE before the first symbol of the time slot; the sixth information is used to indicate whether the time slot is continuously transmitted in the time domain.
  • the first indication information includes eighth information, and the first indication information further includes ninth information and/or tenth information; wherein, the first indication information includes ninth information and/or tenth information.
  • the eighth information is used to indicate the symbols not occupied by the first message transmission among the penultimate M-th symbol to the penultimate symbol; the ninth information is used to indicate whether the first symbol is the first symbols not occupied by message transmission; the tenth information is used to indicate whether the last symbol is a symbol not occupied by the first message transmission.
  • the ninth information is used to indicate whether there is a signal transmitted by the CPE before the first symbol of the time slot or whether the time slot is in the time domain. Continuous transmission.
  • the ninth information is used to indicate that there is no signal transmitted by the CPE before the first symbol of the time slot, and the first symbol set includes the The first symbol, or the ninth information is used to indicate that the time slot is transmitted non-continuously in the time domain, and the first symbol set includes the first symbol.
  • the tenth information is used to indicate whether the time slot is continuously transmitted in the time domain.
  • the tenth information is used to indicate that the time slot is transmitted non-continuously in the time domain, and the first symbol set includes the last symbol.
  • the eighth information includes first information, second information and third information, and the first information, the second information and the third information At least one item of the information is used to indicate the symbols not occupied by the first message transmission in the penultimate M-th symbol to the penultimate symbol; wherein the first information is used to indicate sending or receiving the PSFCH ; The second information is used to indicate whether the PSFCH is frequency division multiplexed; the third information is used to indicate the broadcast type of the PSFCH.
  • the first information is used to indicate receiving the PSFCH
  • the first A symbol set includes the two symbols before the symbols occupied by the PSFCH transmission and the symbols occupied by the PSFCH transmission.
  • the number of symbols occupied by the PSFCH transmission is (M-3), and the M is greater than or equal to 4; or,
  • the first information is used to indicate sending the PSFCH and the second information is used to indicate frequency division multiplexing of the PSFCH, or the first information is used to indicate sending the PSFCH and the third information.
  • the first symbol set includes a symbol before the symbol occupied by the PSFCH transmission and the symbols occupied by the PSFCH transmission.
  • the number of symbols occupied by the PSFCH transmission is (M -2), the M is greater than or equal to 3; or the first information is used to indicate that the PSFCH is sent and the second information is used to indicate that the PSFCH is not frequency division multiplexed, or the first The information is used to indicate sending the PSFCH and the third information is used to indicate that the broadcast type of the PSFCH is unicast, the first symbol set includes symbols occupied by the PSFCH transmission, and the number of symbols occupied by the PSFCH transmission is (M-1), and M is greater than or equal to 2.
  • the eighth information includes first information, second information, third information and fourth information, and the fourth information is the same as the first information, At least one of the second information or the third information is used to indicate the symbols not occupied by the first message transmission in the penultimate M-th symbol to the penultimate symbol; wherein, the first The information is used to indicate sending or receiving the PSFCH; the second information is used to indicate whether the PSFCH is frequency division multiplexed; the third information is used to indicate the broadcast type of the PSFCH.
  • the number of symbols occupied by the PSFCH transmission is configured by signaling or predefined.
  • the value of M is configured by signaling or predefined.
  • the number of symbols in the time slot is S
  • the S is an integer
  • the 6 ⁇ S ⁇ 14 is 6
  • the transceiver unit is further configured to: send the first message according to the first symbol set and the symbols occupied by the time slot.
  • the first message includes data and/or control information sent by the first communication device.
  • the processing is specifically used to: determine the number of symbols on the time slot that are not used for transmitting transport blocks according to the first symbol set, and the number of symbols is used for The size of the transport block is determined, and the number of symbols is an integer greater than or equal to 0 and less than or equal to 5; the first indication information is also used to indicate the number of symbols.
  • a communication device may be the above-mentioned second communication device or a chip or circuit of the second communication device, which is not limited in this application.
  • the communication device includes: a transceiver unit, configured to receive first indication information, the first indication information being used to indicate a first symbol set, the first symbol set being symbols not occupied by the first message transmission in the time slot.
  • a set, the first symbol set includes at least one symbol from the penultimate M-th symbol to the penultimate symbol in the time slot, where M is an integer greater than or equal to 2;
  • a processing unit configured to perform according to the The first indication information is to receive the first message.
  • the processing unit is further configured to: decode the first message according to the first symbol set.
  • the penultimate M-th symbol to the penultimate symbol include symbols corresponding to the physical sidelink feedback control channel PSFCH.
  • the first indication information includes first information, second information and third information, and the first information, the second information and the third information At least one of the three pieces of information is used to indicate the first symbol set; wherein the first information is used to indicate sending or receiving the PSFCH; the second information is used to indicate whether the PSFCH is frequency division multiplexed ; The third information is used to indicate the broadcast type of the PSFCH.
  • the first information is used to indicate receiving the PSFCH, and the first symbol set includes two symbols before the symbols occupied by the PSFCH transmission and the The symbols occupied by the PSFCH transmission, the number of symbols occupied by the PSFCH transmission is (M-3), and the M is greater than or equal to 4; or the first information is used to indicate sending the PSFCH and the second information
  • the first symbol set is used to indicate frequency division multiplexing of the PSFCH, or the first information is used to indicate sending the PSFCH and the third information is used to indicate that the broadcast type of the PSFCH is multicast.
  • the number of symbols occupied by the PSFCH transmission is (M-2), and the M is greater than or equal to 3; or, the first The information is used to indicate sending the PSFCH and the second information is used to indicate the PSFCH No frequency division multiplexing, or the first information is used to indicate sending the PSFCH and the third information is used to indicate the broadcast type of the PSFCH is unicast, and the first symbol set includes the PSFCH transmission
  • the number of occupied symbols for PSFCH transmission is (M-1), and M is greater than or equal to 2.
  • the first indication information includes first information, second information, third information and fourth information, and the first information, the second information and at least one item of the third information and the fourth information are used to indicate the first symbol set; wherein the first information is used to indicate sending or receiving the PSFCH; the second information is used to indicate the first symbol set; The third information is used to indicate whether the PSFCH is frequency division multiplexed; the third information is used to indicate the broadcast type of the PSFCH.
  • the first symbol set further includes the first symbol and/or the last symbol of the time slot.
  • the first indication information includes a first field, the first field indicates the first symbol, the M-th symbol from the bottom to the bottom-M symbol Two symbols are used to transmit the unoccupied symbols of the first message in the last symbol.
  • the first indication information includes first information, second information, third information, fifth information and sixth information, and the fifth information or the At least one of the sixth information, the first information, the second information and the third information is used to indicate the first symbol set; wherein the first information is used to indicate sending or Receive the PSFCH; the second information is used to indicate whether the PSFCH is frequency division multiplexed; the third information is used to indicate the broadcast type of the PSFCH; the fifth information is used to indicate the time slot Whether there is a signal transmitted by the CPE before the first symbol; the sixth information is used to indicate whether the time slot is continuously transmitted in the time domain.
  • the first information is used to indicate reception of the PSFCH
  • the fifth information is used to indicate the existence of a CPE before the first symbol of the timeslot.
  • the transmitted signal, the first symbol set includes the two symbols before the symbol occupied by the PSFCH transmission and the symbols occupied by the PSFCH transmission, wherein the number of symbols occupied by the PSFCH transmission is (M-3), so Said M is greater than or equal to 4.
  • the first information is used to indicate receiving the PSFCH
  • the sixth information is used to indicate that the time slot is continuously transmitted in the time domain
  • the first set of symbols includes the two symbols before the symbols occupied by the PSFCH transmission and the symbols occupied by the PSFCH transmission, wherein the number of symbols occupied by the PSFCH transmission is (M-3), and the M is greater than or equal to 4.
  • the first information is used to indicate that the PSFCH is sent, and the fifth information is used to indicate that there is no CPE before the first symbol of the timeslot.
  • the transmitted signal and the sixth information are used to indicate that the time slot and the following time slot are continuously transmitted in the time domain.
  • the first symbol set includes the first symbol and the symbols occupied by the PSFCH transmission.
  • the previous two symbols and the symbols occupied by the PSFCH transmission are (M-3), and M is greater than or equal to 4.
  • the first information is used to indicate sending the PSFCH
  • the sixth information is used to indicate the time domain between the time slot and the previous time slot. Discontinuous transmission
  • the sixth information is used to indicate that the time slot and the following time slot are continuously transmitted in the time domain
  • the first symbol set includes the first symbol, the symbols occupied by the PSFCH transmission
  • the previous two symbols and the symbols occupied by the PSFCH transmission are (M-3), and M is greater than or equal to 4.
  • the first information is used to indicate that the PSFCH is sent, and the fifth information is used to indicate that there is a signal transmitted by the CPE before the first symbol of the timeslot.
  • the sixth information is used to indicate that the time slot and the next time slot are transmitted discontinuously in the time domain, and the sixth information is used to indicate that the time slot and the previous time slot are continuously transmitted in the time domain.
  • the first symbol set includes the two symbols before the symbol occupied by the PSFCH transmission, the symbol occupied by the PSFCH transmission, and the last symbol, wherein the number of symbols occupied by the PSFCH transmission is (M- 3), the M is greater than or equal to 4.
  • the first information is used to indicate that the PSFCH is sent, and the fifth information is used to indicate that there is no CPE before the first symbol of the timeslot.
  • the transmitted signal and the sixth information are used to indicate that the time slot is transmitted non-continuously in the time domain.
  • the first symbol set includes the first symbol and the two symbols before the PSFCH transmission occupied symbol. symbol, the symbol occupied by the PSFCH transmission, and the last symbol, wherein the number of symbols occupied by the PSFCH transmission is (M-3), and M is greater than or equal to 4.
  • the first information is used to indicate sending the PSFCH
  • the sixth information is used to indicate discontinuous transmission of the time slot in the time domain
  • the first symbol set includes the first symbol, the The two symbols before the symbols occupied by the PSFCH transmission, the symbols occupied by the PSFCH transmission, and the last symbol, wherein the number of symbols occupied by the PSFCH transmission is (M-3), and M is greater than or equal to 4.
  • the first information is used to indicate receiving the PSFCH
  • the second information is used to indicate the PSFCH frequency division multiplexing
  • the fifth The information is used to indicate that there is a signal transmitted by the CPE before the first symbol of the time slot
  • the first symbol set includes a symbol before the symbol occupied by the PSFCH transmission and the symbol occupied by the PSFCH transmission, wherein, the The number of symbols occupied by the PSFCH transmission is (M-2), and M is greater than or equal to 3.
  • the first information is used to indicate receiving the PSFCH
  • the second information is used to indicate the PSFCH frequency division multiplexing
  • the sixth information is used to indicate receiving the PSFCH.
  • the information is used to indicate that the time slot is continuously transmitted in the time domain, and the first symbol set includes a symbol before the symbol occupied by the PSFCH transmission and the symbol occupied by the PSFCH transmission, wherein the PSFCH transmission occupied
  • the number of symbols is (M-2), and M is greater than or equal to 3.
  • the first information is used to indicate receiving the PSFCH
  • the third information is used to indicate that the broadcast type of the PSFCH is multicast
  • the The fifth information is used to indicate that there is a signal transmitted by the CPE before the first symbol of the time slot
  • the first symbol set includes a symbol before the symbol occupied by the PSFCH transmission and the symbol occupied by the PSFCH transmission, where , the number of symbols occupied by the PSFCH transmission is (M-2), and M is greater than or equal to 3.
  • the first information is used to indicate receiving the PSFCH
  • the third information is used to indicate that the broadcast type of the PSFCH is multicast
  • the The sixth information is used to indicate that the time slot is continuously transmitted in the time domain
  • the first symbol set includes a symbol before the symbol occupied by the PSFCH transmission and the symbol occupied by the PSFCH transmission, wherein the PSFCH transmission
  • the number of occupied symbols is (M-2), and M is greater than or equal to 3.
  • the first information is used to indicate sending the PSFCH
  • the second information is used to indicate the PSFCH frequency division multiplexing
  • the fifth information A signal used to indicate that there is no CPE transmission before the first symbol of the time slot
  • the sixth information is used to indicate that the time slot and the next time slot of the time slot are continuously transmitted in the time domain
  • the first symbol set includes the first symbol, a symbol before the symbol occupied by the PSFCH transmission, and the symbol occupied by the PSFCH transmission, wherein the number of symbols occupied by the PSFCH transmission is (M-2 ), the M is greater than or equal to 3.
  • the first information is used to indicate sending the PSFCH
  • the second information is used to indicate frequency division multiplexing of the PSFCH
  • the sixth information The first symbol is used to indicate that the time slot and the previous time slot are transmitted discontinuously in the time domain
  • the sixth information is used to indicate that the time slot and the next time slot are continuously transmitted in the time domain.
  • the set includes the first symbol, a symbol before the symbol occupied by the PSFCH transmission, and the symbol occupied by the PSFCH transmission, where the number of symbols occupied by the PSFCH transmission is (M-2), and the M Greater than or equal to 3.
  • the first information is used to indicate sending the PSFCH
  • the third information is used to indicate that the broadcast type of the PSFCH is multicast
  • the third information is used to indicate that the broadcast type of the PSFCH is multicast.
  • the fifth information is used to indicate that there is no signal transmitted by the CPE before the first symbol of the time slot
  • the sixth information is used to indicate that the time slot is continuous in the time domain with the time slot after the time slot.
  • the first symbol set includes the first symbol, a symbol before the symbol occupied by the PSFCH transmission, and the symbols occupied by the PSFCH transmission, wherein the number of symbols occupied by the PSFCH transmission is (M -2), the M is greater than or equal to 3.
  • the first information is used to indicate sending the PSFCH
  • the third information is used to indicate that the broadcast type of the PSFCH is multicast
  • the third information is used to indicate that the broadcast type of the PSFCH is multicast.
  • the sixth information is used to indicate that the time slot and the previous time slot are transmitted discontinuously in the time domain
  • the sixth information is used to indicate that the time slot and the next time slot are continuously transmitted in the time domain.
  • a symbol set includes the first symbol, a symbol before the symbol occupied by the PSFCH transmission, and the symbol occupied by the PSFCH transmission, where the number of symbols occupied by the PSFCH transmission is (M-2), so Said M is greater than or equal to 3.
  • the first information is used to indicate sending the PSFCH
  • the second information is used to indicate frequency division multiplexing of the PSFCH
  • the fifth information is used to indicate A signal indicating that there is a CPE transmission before the first symbol of the time slot
  • the sixth information is used to indicate that the time slot and the following time slot are non-continuously transmitted in the time domain
  • the sixth information is used to Indicates that the time slot and the previous time slot are continuously transmitted in the time domain
  • the first symbol set includes a symbol before the symbol occupied by the PSFCH transmission, the symbol occupied by the PSFCH transmission, and the last symbol, where , the number of symbols occupied by the PSFCH transmission is (M-2), and M is greater than or equal to 3.
  • the first information is used to indicate sending the PSFCH
  • the third information is used to indicate that the broadcast type of the PSFCH is multicast
  • the fifth information A signal used to indicate that there is a CPE transmission before the first symbol of the time slot
  • the sixth information is used to indicate discontinuous transmission in the time domain between the time slot and the following time slot
  • the sixth information It is used to indicate that the time slot and the previous time slot are continuously transmitted in the time domain
  • the first symbol set includes symbols occupied by the PSFCH transmission. A symbol before the number, a symbol occupied by the PSFCH transmission, and the last symbol, where the number of symbols occupied by the PSFCH transmission is (M-2), and M is greater than or equal to 3.
  • the first information is used to indicate sending the PSFCH
  • the second information is used to indicate the PSFCH frequency division multiplexing
  • the fifth information A signal used to indicate that there is no CPE transmission before the first symbol of the time slot
  • the sixth information is used to indicate that the time slot is discontinuously transmitted in the time domain
  • the first symbol set includes the The first symbol, the symbol before the symbol occupied by the PSFCH transmission, the symbol occupied by the PSFCH transmission, and the last symbol, wherein the number of symbols occupied by the PSFCH transmission is (M-2), and the M Greater than or equal to 3.
  • the first information is used to indicate sending the PSFCH
  • the second information is used to indicate the PSFCH frequency division multiplexing
  • the sixth information is used to indicate sending the PSFCH.
  • the information is used to indicate that the time slot is discontinuously transmitted in the time domain
  • the first symbol set includes the first symbol, a symbol before the symbol occupied by the PSFCH transmission, the symbol occupied by the PSFCH transmission, And the last symbol, wherein the number of symbols occupied by the PSFCH transmission is (M-2), and M is greater than or equal to 3.
  • the first information is used to indicate sending the PSFCH
  • the third information is used to indicate that the broadcast type of the PSFCH is multicast
  • the third information is used to indicate that the broadcast type of the PSFCH is multicast.
  • the fifth information is used to indicate that there is no signal transmitted by CPE before the first symbol of the time slot
  • the sixth information is used to indicate that the time slot is discontinuously transmitted in the time domain.
  • the first symbol set includes The first symbol, the symbol before the symbol occupied by the PSFCH transmission, the symbol occupied by the PSFCH transmission, and the last symbol, wherein the number of symbols occupied by the PSFCH transmission is (M-2), so Said M is greater than or equal to 3.
  • the first information is used to indicate sending the PSFCH
  • the third information is used to indicate that the broadcast type of the PSFCH is multicast
  • the The sixth information is used to indicate that the time slot is discontinuously transmitted in the time domain.
  • the first symbol set includes the first symbol, a symbol before the symbol occupied by the PSFCH transmission, and the symbol occupied by the PSFCH transmission. symbols, and the last symbol, where the number of symbols occupied by the PSFCH transmission is (M-2), and M is greater than or equal to 3.
  • the first information is used to indicate receiving the PSFCH
  • the second information is used to indicate that the PSFCH is not frequency division multiplexed
  • the third information is used to indicate that the PSFCH is not frequency division multiplexed.
  • Five information is used to indicate that there is a signal transmitted by the CPE before the first symbol of the time slot.
  • the first symbol set includes the symbols occupied by the PSFCH transmission, where the number of symbols occupied by the PSFCH transmission is (M- 1), the M is greater than or equal to 2.
  • the first information is used to indicate receiving the PSFCH
  • the second information is used to indicate that the PSFCH is not frequency division multiplexed
  • the third information is used to indicate that the PSFCH is not frequency division multiplexed.
  • Six information is used to indicate that the time slot is continuously transmitted in the time domain.
  • the first symbol set includes symbols occupied by the PSFCH transmission, where the number of symbols occupied by the PSFCH transmission is (M-1), and the M is greater than or equal to 2.
  • the first information is used to indicate receiving the PSFCH
  • the third information is used to indicate that the broadcast type of the PSFCH is unicast
  • the The fifth information is used to indicate that there is a signal transmitted by the CPE before the first symbol of the time slot.
  • the first symbol set includes the symbols occupied by the PSFCH transmission, where the number of symbols occupied by the PSFCH transmission is (M -1), the M is greater than or equal to 2.
  • the first information is used to indicate receiving the PSFCH
  • the third information is used to indicate that the broadcast type of the PSFCH is unicast
  • the The sixth information is used to indicate that the time slot is continuously transmitted in the time domain.
  • the first symbol set includes symbols occupied by the PSFCH transmission, where the number of symbols occupied by the PSFCH transmission is (M-1), so Said M is greater than or equal to 2.
  • the first information is used to indicate that the PSFCH is sent
  • the second information is used to indicate that the PSFCH is not frequency division multiplexed
  • the fifth information is used to indicate that the PSFCH is not frequency division multiplexed.
  • the information is used to indicate that there is no signal transmitted by the CPE before the first symbol of the time slot
  • the sixth information is used to indicate that the time slot and the time slot after the time slot are continuously transmitted in the time domain.
  • the first symbol set includes the first symbol and the symbols occupied by the PSFCH transmission, where the number of symbols occupied by the PSFCH transmission is (M-1), and M is greater than or equal to 2.
  • the first information is used to indicate sending the PSFCH
  • the second information is used to indicate that the PSFCH is not frequency division multiplexed
  • the sixth information is used to indicate that the PSFCH is not frequency division multiplexed.
  • the information is used to indicate that the time slot and the previous time slot are transmitted discontinuously in the time domain
  • the sixth information is used to indicate that the time slot and the next time slot are continuously transmitted in the time domain.
  • the first The symbol set includes the first symbol and the symbols occupied by the PSFCH transmission, where the number of symbols occupied by the PSFCH transmission is (M-1), and M is greater than or equal to 2.
  • the first information is used to indicate sending the PSFCH
  • the third information is used to indicate the broadcast type of the PSFCH is unicast
  • the third information is used to indicate that the broadcast type of the PSFCH is unicast.
  • the fifth information is used to indicate that there is no signal transmitted by CPE before the first symbol of the time slot
  • the sixth information is used to indicate that the time slot and the following time slot are continuously transmitted in the time domain
  • the third A symbol set includes the first symbol and the symbols occupied by the PSFCH transmission, where the number of symbols occupied by the PSFCH transmission is (M-1), and M is greater than or equal to 2.
  • the first information is used to indicate sending the PSFCH
  • the third information is used to indicate the broadcast type of the PSFCH is unicast
  • the third information is used to indicate that the broadcast type of the PSFCH is unicast.
  • the sixth information is used to indicate that the time slot and the previous time slot are transmitted discontinuously in the time domain, and the sixth information is used to indicate that the time slot and the next time slot are continuously transmitted in the time domain.
  • a symbol set includes the first symbol and the symbols occupied by the PSFCH transmission, where the number of symbols occupied by the PSFCH transmission is (M-1), and M is greater than or equal to 2.
  • the first information is used to indicate that the PSFCH is sent
  • the second information is used to indicate that the PSFCH is not frequency division multiplexed
  • the fifth information is used to indicate that the PSFCH is sent.
  • the sixth information is used to indicate discontinuous transmission in the time domain between the time slot and the following time slot, and the time slot is different from the previous time slot.
  • One time slot is continuously transmitted in the time domain, and the first symbol set includes the symbols occupied by the PSFCH transmission and the last symbol, where the number of symbols occupied by the PSFCH transmission is (M-1), and the M is greater than or equal to 2.
  • the first information is used to indicate sending the PSFCH
  • the third information is used to indicate the broadcast type of the PSFCH is unicast
  • the fifth information is used to indicate that the broadcast type of the PSFCH is unicast.
  • the sixth information is used to indicate that the time slot and the following time slot are non-continuously transmitted in the time domain
  • the sixth information The information is used to indicate that the time slot and the previous time slot are continuously transmitted in the time domain.
  • the first symbol set includes the symbols occupied by the PSFCH transmission and the last symbol, wherein the symbols occupied by the PSFCH transmission
  • the number is (M-1), and M is greater than or equal to 2.
  • the first information is used to indicate that the PSFCH is sent
  • the second information is used to indicate that the PSFCH is not frequency division multiplexed
  • the fifth information is used to indicate that the PSFCH is not frequency division multiplexed.
  • the information is used to indicate that there is no signal transmitted by CPE before the first symbol of the time slot
  • the sixth information is used to indicate that the time slot is discontinuously transmitted in the time domain
  • the first symbol set includes all The first symbol, the symbol occupied by the PSFCH transmission, and the last symbol, wherein the number of symbols occupied by the PSFCH transmission is (M-1), and M is greater than or equal to 2.
  • the first information is used to indicate sending the PSFCH
  • the second information is used to indicate that the PSFCH is not frequency division multiplexed
  • the third information is used to indicate that the PSFCH is not frequency division multiplexed.
  • the six information is used to indicate that the time slot is non-continuously transmitted in the time domain.
  • the first symbol set includes the first symbol, the symbols occupied by the PSFCH transmission, and the last symbol, wherein the PSFCH transmission
  • the number of occupied symbols is (M-1), and M is greater than or equal to 2.
  • the first information is used to indicate sending the PSFCH
  • the third information is used to indicate the broadcast type of the PSFCH is unicast
  • the third information is used to indicate that the broadcast type of the PSFCH is unicast.
  • the fifth information is used to indicate that there is no signal transmitted by CPE before the first symbol of the time slot
  • the sixth information is used to indicate that the time slot is discontinuously transmitted in the time domain.
  • the first symbol set includes The first symbol, the symbol occupied by the PSFCH transmission, and the last symbol, wherein the number of symbols occupied by the PSFCH transmission is (M-1), and M is greater than or equal to 2.
  • the first information is used to indicate sending the PSFCH
  • the third information is used to indicate that the broadcast type of the PSFCH is unicast
  • the The sixth information is used to indicate that the time slot is discontinuously transmitted in the time domain
  • the first symbol set includes the first symbol, the symbol occupied by the PSFCH transmission, and the last symbol, wherein the PSFCH The number of symbols occupied by transmission is (M-1), and M is greater than or equal to 2.
  • the first indication information includes first information, second information, third information, fifth information, sixth information, and seventh information, and the The seventh information and at least one of the first information, the second information, the third information, the fifth information and the sixth information are used to indicate the first symbol set; wherein, The first information is used to indicate sending or receiving the PSFCH; the second information is used to indicate whether the PSFCH is frequency division multiplexed; the third information is used to indicate the broadcast type of the PSFCH; the third information is used to indicate whether the PSFCH is frequency division multiplexed; the third information is used to indicate the broadcast type of the PSFCH; The fifth information is used to indicate whether there is a CPE transmission signal before the first symbol of the time slot; the sixth information is used to indicate whether the time slot is continuously transmitted in the time domain.
  • the first indication information includes eighth information, and the first indication information further includes ninth information and/or tenth information; wherein, the first indication information includes ninth information and/or tenth information;
  • the eighth information is used to indicate the symbols not occupied by the first message transmission among the penultimate M-th symbol to the penultimate symbol;
  • the ninth information is used to indicate whether the first symbol is the first symbols not occupied by message transmission;
  • the tenth information is used to indicate whether the last symbol is a symbol not occupied by the first message transmission.
  • the ninth information is used to indicate whether there is a signal transmitted by the CPE before the first symbol of the time slot or whether the time slot is in the time domain. Continuous transmission.
  • the ninth information is used to indicate that there is no signal transmitted by the CPE before the first symbol of the time slot, and the first symbol set includes the The first symbol, or the ninth information is used to indicate that the time slot is transmitted non-continuously in the time domain, and the first symbol set includes the first symbol.
  • the tenth information is used to indicate whether the time slot is continuously transmitted in the time domain.
  • the tenth information is used to indicate that the time slot is transmitted non-continuously in the time domain, and the first symbol set includes the last symbol.
  • the eighth information includes first information, second information and third information, and the first information, the second information and the third information At least one item of the information is used to indicate the symbols not occupied by the first message transmission in the penultimate M-th symbol to the penultimate symbol; wherein the first information is used to indicate sending or receiving the PSFCH ; The second information is used to indicate whether the PSFCH is frequency division multiplexed; the third information is used to indicate the broadcast type of the PSFCH.
  • the first information is used to indicate receiving the PSFCH, and the first symbol set includes two symbols before the symbols occupied by the PSFCH transmission and the The symbols occupied by the PSFCH transmission, the number of symbols occupied by the PSFCH transmission is (M-3), and the M is greater than or equal to 4; or the first information is used to indicate sending the PSFCH and the second information
  • the first symbol set is used to indicate frequency division multiplexing of the PSFCH, or the first information is used to indicate sending the PSFCH and the third information is used to indicate that the broadcast type of the PSFCH is multicast.
  • the number of symbols occupied by the PSFCH transmission is (M-2), and the M is greater than or equal to 3; or, the first The information is used to indicate that the PSFCH is sent and the second information is used to indicate that the PSFCH is not frequency division multiplexed, or the first information is used to indicate that the PSFCH is sent and the third information is used to indicate that the PSFCH is not frequency division multiplexed.
  • the broadcast type of the PSFCH is unicast, the first symbol set includes symbols occupied by the PSFCH transmission, the number of symbols occupied by the PSFCH transmission is (M-1), and M is greater than or equal to 2.
  • the eighth information includes first information, second information, third information and fourth information, and the fourth information is the same as the first information, At least one of the second information or the third information is used to indicate the symbols not occupied by the first message transmission in the penultimate M-th symbol to the penultimate symbol; wherein, the first The information is used to indicate sending or receiving the PSFCH; the second information is used to indicate whether the PSFCH is frequency division multiplexed; the third information is used to indicate the broadcast type of the PSFCH.
  • the value of M is configured by signaling or predefined.
  • the number of symbols in the time slot is S, the S is an integer, and the 6 ⁇ S ⁇ 14.
  • the first message includes data and/or control information received by the second communication device.
  • a communication device may be the above-mentioned first communication device or a chip or circuit of the first communication device, which is not limited in this application.
  • the communication device includes: a processing unit configured to determine the number of symbols on the time slot that are not used for transmitting transport blocks, the number of symbols being used to determine the size of the transport block, and the number of symbols being greater than or equal to 0 and less than or an integer equal to 5; a transceiver unit, configured to send first indication information, where the first indication information is used to indicate the number of symbols.
  • the processing unit is further configured to: determine the number of subcarriers N RE allocated to the transmission channel according to the number of symbols; determine the transmission number N RE according to the N RE The size of the block.
  • the number of symbols includes the number of symbols in the first symbol and/or the last symbol on the time slot that are not used to send the transport block.
  • the first indication information includes a first field, the first field indicates that the first symbol and/or the last symbol on the time slot are not used. The number of symbols used to send the transport block.
  • the processing unit is specifically configured to: determine the number of symbols on the time slot that are not used for transmitting transport blocks based on the first information and the second information; wherein, The first information is used to indicate whether there is a signal transmitted by the CPE before the first symbol of the time slot; the second information is used to indicate whether the time slot is continuously transmitted in the time domain.
  • the processing unit is specifically configured to: determine, based on the first information, the second information, and the third information, that the time slot is not used for sending transport blocks. Number of symbols; wherein, the first information is used to indicate whether there is a signal transmitted by the CPE before the first symbol of the time slot; the second information is used to indicate whether the time slot is continuously transmitted in the time domain; The third information is used to indicate whether the first symbol or the last symbol is a symbol not occupied by the transport block.
  • the processing unit is specifically configured to: according to Determine the N RE ; where, is the number of subcarriers in the physical resource block; is the number of symbols in the time slot; is the number of symbols among the first symbol and the last symbol that are not used to send the transport block, and The value is 0, 1 or 2.
  • the number of symbols not used for transmitting transport blocks on the time slot also includes the number of symbols corresponding to the physical sidelink feedback control channel PSFCH, wherein, The number of symbols corresponding to the PSFCH is greater than or equal to K and less than or equal to K+2, where K is the number of symbols occupied by the PSFCH transmission.
  • the first indication information includes a first field indicating the first symbol, the symbol corresponding to the PSFCH, and the The number of symbols in the last symbol that are not used to send the transport block.
  • the processing unit is specifically configured to: determine, based on the first information, the second information, and the third information, symbols on the time slot that are not used for transmitting transport blocks. number; wherein, the first information is used to indicate whether there is a signal transmitted by CPE before the first symbol of the time slot; the second information is used to indicate whether the time slot is continuously transmitted in the time domain; the The third information is used to indicate at least one of the following: sending or receiving the PSFCH; whether the PSFCH is frequency division multiplexed; and the broadcast type of the PSFCH.
  • the processing unit is specifically configured to: according to Determine the N RE ; where, is the number of subcarriers in the physical resource block; is the number of symbols in the time slot; is the number of symbols among the first symbol and the last symbol that are not used to send the transport block, and The value is 0, 1 or 2; is the number of symbols among the symbols corresponding to the PSFCH that are not used to send the transport block.
  • the processing unit is specifically configured to: according to Determine the N RE ; where, is the number of subcarriers in the physical resource block; is the number of symbols in the time slot; is the number of symbols on the time slot that are not used to send transport blocks.
  • the transceiving unit further includes: sending the transport block.
  • the processing unit is specifically configured to: determine a first symbol set, where the first symbol set includes the first symbol in the time slot, the Mth symbol from the bottom symbols to the penultimate symbol and at least one symbol from the last symbol, where M is an integer greater than or equal to 2; according to the first set of symbols, it is determined that the timeslot is not used for transmitting transport blocks. number of symbols.
  • the value of M is configured by signaling or predefined.
  • the value of K is configured by signaling or predefined.
  • the number of symbols in the time slot is S
  • the S is an integer
  • the 6 ⁇ S ⁇ 14 is 6
  • a communication device may be the above-mentioned second communication device or a chip or circuit of the second communication device, which is not limited in this application.
  • the communication device includes: a transceiver unit, configured to receive first indication information, the first indication information being used to indicate the number of symbols on the time slot that are not used for transmitting transport blocks, and the number of symbols is greater than or equal to 0 and less than or an integer equal to 5; a processing unit configured to receive the transport block according to the first indication information.
  • the processing unit is further configured to: determine the number N RE of subcarriers allocated to the transmission channel according to the number of symbols; determine the number of subcarriers N RE of the transmission block according to the N RE size.
  • the transceiver unit is further configured to: according to the size of the transport block, Receive the transport block.
  • the number of symbols includes the number of symbols in the first symbol and/or the last symbol on the time slot that are not used for transmitting the transport block.
  • the first indication information includes a first field indicating that the first symbol and/or the last symbol on the time slot are not used. The number of symbols used to send the transport block.
  • the processing unit is specifically configured to: according to Determine the N RE ; where, is the number of subcarriers in the physical resource block; is the number of symbols in the time slot; is the number of symbols among the first symbol and the last symbol that are not used to send the transport block, and The value is 0, 1 or 2.
  • the number of symbols not used for transmitting transport blocks on the time slot also includes the number of symbols corresponding to the physical sidelink feedback control channel PSFCH, wherein, The number of symbols corresponding to the PSFCH is greater than or equal to K and less than or equal to K+2, where K is the number of symbols occupied by the PSFCH transmission.
  • the first indication information includes a first field indicating the first symbol, the symbol corresponding to the PSFCH, and the The number of symbols in the last symbol that are not used to send the transport block.
  • the processing unit is specifically configured to: according to Determine the N RE ; where, is the number of subcarriers in the physical resource block; is the number of symbols in the time slot; is the number of symbols among the first symbol and the last symbol that are not used to send the transport block, and The value is 0, 1 or 2; is the number of symbols among the symbols corresponding to the PSFCH that are not used to send the transport block.
  • the processing unit is specifically configured to: according to Determine the N RE ; where, is the number of subcarriers in the physical resource block; is the number of symbols in the time slot; is the number of symbols on the time slot that are not used to send transport blocks.
  • the value of K is configured by signaling or predefined.
  • the number of symbols in the time slot is S, the S is an integer, and the 6 ⁇ S ⁇ 14.
  • a communication device which is used to perform the communication method in any of the above-mentioned first aspect, third aspect, and any possible implementation manner of the first aspect or the third aspect.
  • the communication device may include units and/or modules for performing the communication method in the first aspect, the third aspect, and any possible implementation of the first aspect or the third aspect, such as a processing unit and/or Transceiver unit.
  • the communication device is a first communication device.
  • the transceiver unit may be a transceiver, or an input/output interface; the processing unit may be at least one processor.
  • the transceiver may be a transceiver circuit.
  • the input/output interface may be an input/output circuit.
  • the communication device is a chip, chip system or circuit for the first communication device.
  • the transceiver unit may be an input/output interface, interface circuit, output circuit, input circuit, pin or Related circuits, etc.;
  • the processing unit may be at least one processor, processing circuit or logic circuit, etc.
  • a communication device which is used to perform the communication method in any of the possible implementation manners of the second aspect, the fourth aspect, and the second aspect and the fourth aspect.
  • the communication device may include units and/or modules for performing the communication method in the second aspect, the fourth aspect, and any possible implementation of the second aspect or the fourth aspect, such as a processing unit and/or Transceiver unit.
  • the communication device is a second communication device.
  • the transceiver unit may be a transceiver, or an input/output interface; the processing unit may be at least one processor.
  • the transceiver may be a transceiver circuit.
  • the input/output interface may be an input/output circuit.
  • the communication device is a chip, chip system or circuit for a second communication device.
  • the transceiver unit may be an input/output interface, interface circuit, output circuit, input circuit, pin or Related circuits, etc.
  • the processing unit may be at least one processor, processing circuit or logic circuit, etc.
  • a communication device in an eleventh aspect, includes: at least one processor for executing computer programs or instructions stored in a memory to execute the above first aspect, the third aspect and the first and third aspects. communication method in any possible implementation of the aspect.
  • the communication device further includes a memory for storing computer programs or instructions.
  • the communication device further includes a communication interface, through which the processor reads the computer program or instructions stored in the memory.
  • the communication device is a first communication device.
  • the device is a chip, chip system or circuit for the first communication device.
  • a communication device in a twelfth aspect, includes: at least one processor for executing computer programs or instructions stored in a memory to execute the above-mentioned second aspect, the fourth aspect and the second and fourth aspects. communication method in any possible implementation of the aspect.
  • the communication device further includes a memory for storing computer programs or instructions.
  • the communication device further includes a communication interface, through which the processor reads the computer program or instructions stored in the memory.
  • the communication device is a second communication device.
  • the device is a chip, chip system or circuit for the second communication device.
  • a processor configured to execute the communication method in any of the above-mentioned first to fourth aspects and any possible implementation manner of the first to fourth aspects.
  • processor output, reception, input and other operations can be understood as processor output, reception, input and other operations.
  • transmitting and receiving operations performed by the radio frequency circuit and the antenna, which is not limited in this application.
  • a computer-readable storage medium stores a program code for device execution.
  • the program code includes a program code for executing the above-mentioned first to fourth aspects and the first to third aspects. Communication method in any of the four possible implementation methods.
  • the device includes the above-mentioned first communication device or second communication device.
  • a computer program product containing instructions is provided.
  • the computer program product When the computer program product is run on a computer, it causes the computer to execute any one of the first to fourth aspects and the first to fourth aspects. Communication methods among possible implementations.
  • a sixteenth aspect provides a chip, characterized in that it includes at least one processor and an interface circuit, the interface circuit is used to provide program instructions or data to the at least one processor, and the at least one processor is used to execute the Program instructions to implement the communication method in any of the possible implementation manners of the above first to fourth aspects and the first to fourth aspects.
  • a communication system including the above-mentioned first communication device and second communication device.
  • FIG. 1 is a schematic diagram of a wireless communication system applicable to an embodiment of the present application.
  • Figures 2 and 3 are respectively schematic diagrams of the uses of each symbol on the time slot.
  • Figure 4 is a schematic flow chart of an example communication method provided by an embodiment of the present application.
  • Figure 5 is a schematic diagram of symbols occupied by PSFCH transmission, AGC and the number of symbols required for actual transmission of PSFCH provided by the embodiment of the present application.
  • Figure 6 is a schematic diagram between the first symbol set and the symbols occupied by PSFCH transmission on the time slot provided by the embodiment of the present application.
  • Figures 7 to 34 are respectively schematic diagrams of the usage of each symbol on the time slot provided by the embodiment of the present application.
  • Figure 35 is a schematic flow chart of another communication method provided by an embodiment of the present application.
  • Figure 36 is a schematic flow chart of another communication method provided by the embodiment of the present application.
  • Figure 37 is a schematic flow chart of another communication method provided by the embodiment of the present application.
  • Figure 38 is a schematic flow chart of another communication method provided by the embodiment of the present application.
  • Figure 39 is a schematic structural diagram of an example of a communication device provided by an embodiment of the present application.
  • Figure 40 is a schematic structural diagram of another communication device provided by an embodiment of the present application.
  • "instruction” may include direct instruction and indirect instruction, and may also include explicit instruction and implicit instruction.
  • the information indicated by a certain information (such as the first indication information described below) is called information to be indicated.
  • information to be indicated In the specific implementation process, there are many ways to indicate the information to be indicated.
  • direct indication can be The information to be indicated, such as the information to be indicated itself or the index of the information to be indicated, etc.
  • the information to be indicated may also be indirectly indicated by indicating other information, where there is an association relationship between the other information and the information to be indicated. It is also possible to indicate only a part of the information to be indicated, while other parts of the information to be indicated are known or agreed in advance.
  • the indication of specific information can also be achieved by means of a pre-agreed (for example, communication protocol stipulated) arrangement order of each piece of information, thereby reducing the indication overhead to a certain extent.
  • the first, second and various numerical numbers are only used to distinguish them for convenience of description and are not used to limit the scope of the embodiments of the present application. For example, distinguish between different configuration information, aggregation levels, sequences, time slots, etc.
  • the signaling configuration described in the embodiments of this application can be understood as network device configuration signaling or preconfigured signaling.
  • the signaling may be configured on the resource pool.
  • signaling may include radio resource control (RRC), system information block (SIB) or master information block (MIB), etc.
  • RRC radio resource control
  • SIB system information block
  • MIB master information block
  • the sidelink control information (SCI) involved in the embodiment of this application can be the first stage SCI (first stage SCI) or the second stage SCI (second stage SCI).
  • the present invention There are no restrictions on this.
  • bit values used in the fields illustrated in the embodiments of this application are only an example, which should not limit this application.
  • bit values used in the fields illustrated in the embodiments of this application are only examples, which should not limit this application.
  • the technical solutions provided by this application can be applied to various communication systems, such as fifth generation (5th generation, 5G) or new radio (NR) systems, long term evolution (LTE) systems, LTE frequency division Duplex (frequency division duplex, FDD) system, LTE time division duplex (TDD) system, etc.
  • the technical solution provided by this application can also be applied to future communication systems, such as the sixth generation mobile communication system.
  • the technical solution provided by this application can also be applied to device-to-device (D2D) communication, vehicle-to-everything (V2X) communication, machine-to-machine (M2M) communication, machine type Communication (machine type communication, MTC), and Internet of Things (Internet of things, IoT) communication systems or other communication systems.
  • D2D device-to-device
  • V2X vehicle-to-everything
  • M2M machine-to-machine
  • MTC machine type Communication
  • Internet of Things Internet of things, IoT
  • V2X may include vehicle-to-vehicle (V2V), vehicle-to-pedestrian (V2P), and vehicle-to-infrastructure (V2I).
  • the infrastructure is, for example, a road side unit (RSU) or network equipment.
  • Terminal devices in the embodiments of this application include various devices with wireless communication functions, which can be used to connect people, objects, machines, etc.
  • Terminal devices can be widely used in various scenarios, such as: cellular communication, D2D, V2X, peer to peer (P2P), M2M, MTC, IoT, virtual reality (VR), augmented reality (augmented reality) , AR), industrial control, autonomous driving, telemedicine, smart grid, smart furniture, smart office, smart wearables, smart transportation, smart city drones, robots, remote sensing, passive sensing, positioning, navigation and tracking, autonomous delivery Wait for the scene.
  • the terminal device can be a terminal in any of the above scenarios, such as MTC terminal, IoT terminal, etc.
  • the terminal equipment may be a 3rd generation partnership project (3GPP) standard user equipment (UE), terminal (terminal), fixed equipment, mobile station equipment, or mobile equipment, user Subscriber unit, handheld device, vehicle-mounted device, wearable device, cellular phone, smart phone, SIP phone, wireless data card, personal digital assistant (PDA), computer, Tablet computers, notebook computers, wireless modems, handheld devices (handset), laptop computers (laptop computers), computers with wireless transceiver functions, smart books, vehicles, satellites, global positioning system (GPS) equipment, Target tracking equipment, aircraft (such as drones, helicopters, multi-helicopters, quad-helicopters, or aircraft, etc.), ships, remote control devices, smart home equipment, industrial equipment, or devices built into the above equipment (for example, in the above equipment) communication module, modem or chip, etc.), or other processing equipment connected to the wireless modem.
  • 3GPP 3rd generation partnership project
  • the UE can also be used to act as a base station.
  • a UE may act as a scheduling entity that provides sidelink signals between UEs in scenarios such as V2X, D2D or P2P.
  • the device used to implement the functions of the terminal device may be a terminal device, or a device that can support the terminal device to implement the function, such as a chip system or a chip, and the device may be installed in the terminal device.
  • the chip system may be composed of chips, or may include chips and other discrete devices.
  • the network device in the embodiment of the present application may be a device used to communicate with a terminal device.
  • the network device may also be called an access network device or a wireless access network device.
  • the network device may be a base station.
  • the network device in the embodiment of this application may refer to a radio access network (radio access network, RAN) node (or device) that connects the terminal device to the wireless network.
  • radio access network radio access network, RAN node (or device) that connects the terminal device to the wireless network.
  • the base station can broadly cover various names as follows, or be replaced with the following names, such as: Node B (NodeB), evolved base station (evolved NodeB, eNB), next generation base station (next generation NodeB, gNB), relay station, Access point, transmission point (transmitting and receiving point, TRP), transmitting point (TP), primary station, secondary station, multi-standard wireless (motor slide retainer, MSR) node, home base station, network controller, interface Ingress node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (active antenna unit, AAU), radio frequency Head (remote radio head, RRH), central unit (central unit, CU), distributed unit (distributed unit, DU), positioning node, etc.
  • NodeB Node B
  • eNB evolved base station
  • next generation NodeB next generation NodeB, gNB
  • relay station Access point
  • transmission point transmitting and receiving
  • the base station may be a macro base station, a micro base station, a relay node, a donor node or the like, or a combination thereof.
  • a base station may also refer to a communication module, modem or chip used in the aforementioned equipment or devices.
  • the base station can also be a mobile switching center and equipment that performs base station functions in D2D, V2X, and M2M communications, network-side equipment in 6G networks, equipment that performs base station functions in future communication systems, etc.
  • Base stations can support networks with the same or different access technologies. The embodiments of this application do not limit the specific technology and specific equipment form used by the network equipment.
  • Base stations can be fixed or mobile.
  • a helicopter or drone may be configured to act as a mobile base station, and one or more cells may move based on the mobile base station's location.
  • a helicopter or drone may be configured to serve as a device that communicates with another base station.
  • Network equipment and terminal equipment can be deployed on land, indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; they can also be deployed on aircraft, balloons and satellites in the sky. In the embodiments of this application, the scenarios in which network devices and terminal devices are located are not limited.
  • FIG. 1 shows a schematic diagram of a wireless communication system suitable for an embodiment of the present application.
  • the wireless communication system may include at least one network device, such as the network device 110 shown in FIG. 1 , and the wireless communication system may also include at least one terminal device, such as the terminal device 120 and the terminal shown in FIG. 1 Device 130.
  • Both network equipment and terminal equipment can be configured with multiple antennas, and network equipment and terminal equipment can communicate using multi-antenna technology.
  • Terminal devices can communicate directly with each other.
  • the link that directly communicates between terminal devices may be called a sidelink (SL), and the direct communication between terminal devices may be called SL communication.
  • SL sidelink
  • FIG. 1 is a simplified schematic diagram for ease of understanding.
  • the wireless communication system may also include other network devices or other terminal devices, which are not shown in FIG. 1 .
  • the communication method provided by the embodiment of the present application can be applied to a wireless communication system including network equipment and terminal equipment. As shown in FIG. 1 , the communication method provided by the embodiment of the present application can be applied to a wireless communication system including a terminal device 120 or a terminal device 130 and a network device 110 . Alternatively, the communication method provided by the embodiment of the present application can also be applied to a wireless communication system including two terminal devices. As shown in FIG. 1 , the communication method provided by the embodiment of the present application can be applied to a wireless communication system including a terminal device 120 and a terminal device 130 .
  • rate matching refers to the operation of aligning the number of encoded bits with the actual number of available transmission resources.
  • rate matching can be understood as: the symbols or time-frequency resources for which rate matching is performed are not used to transmit corresponding channels or data. Or, based on unusable symbols or time-frequency resources, determine the overhead or amount of available resources for calculating encoded bits.
  • rate matching means that bits on the transmission channel are repeated or punctured to match the carrying capacity of the actual transmission resource of the physical channel. If the number of input bits is less than the number of output bits, use repetition; if the number of input bits is less than the number of output bits, If the number of special features exceeds the number of output bits, use punching.
  • repetition is the insertion of bits that have previously occurred after a specific bit.
  • puncturing is to punch out the current bit and simultaneously move the following bits forward one bit.
  • puncturing is to punch out some bits according to a certain pattern or method and remove them from the bit sequence.
  • the operation of derate matching is the opposite of the operation of rate matching, and repeated or deleted bit positions are identified to obtain the correct original information.
  • duplicate bits need to be removed.
  • the receiver can zero the determined bit positions that are punctured, and then send them to the decoder for processing together with the soft information of the bits that have not been punctured.
  • Continuous transmission refers to the way in which communication devices send data in an uninterrupted manner.
  • the continuous transmission may be the continuous transmission of a same transport block (TB) by the communication device in the time domain.
  • TB transport block
  • the continuous transmission may be continuous transmission of multiple TBs in the time domain by the communication device.
  • the continuous transmission of multiple TBs in the time domain can be the same TB performing continuous transmission in an adjacent manner, or different TBs performing continuous transmission in an adjacent manner. This application does not limit this.
  • the sending subject When multiple TBs are being transmitted, the sending subject is switched, or the transmission of the communication device is interrupted, it can be considered not to be continuous transmission, that is, discontinuous transmission.
  • GP symbols refer to empty symbols or guard symbols.
  • GP symbols can be used for transceiver conversion, beam scanning, radio frequency or antenna switching, etc.
  • GP symbols can also be called GAP symbols.
  • the GP symbols described in method 200 below may be symbols that are not used by the first communication device to transmit the first message.
  • the GP symbols described in the method 200 below may be symbols that are not used by the first communication device to transmit transport blocks.
  • COT refers to the transmission on one or more channels by the terminal device after performing the channel access process. If a terminal device obtains the right to use the channel through listen before talk (LBT), the terminal device can occupy the channel for a period of time, which can be called COT.
  • COT can be a time concept or a resource concept. For sidelink transmission, it may refer to the time of sidelink transmission or the time-frequency resources occupied by sidelink transmission.
  • terminal equipment may move, or the number of concurrent users on the same time domain resource may change. Therefore, in wireless communication systems, especially in side-link communication systems, the receiver receives signals in each time slot, and its energy will have large changes and fluctuations. In order to handle such large signal fluctuations, the transmitter usually needs to use this symbol as the first symbol at the beginning of the transmission time slot as the gain control symbol of the receiver.
  • this time slot includes 14 symbols, that is, symbols numbered 0-13.
  • the first symbol of this time slot (symbol numbered 0) is used for automatic gain control (AGC).
  • AGC automatic gain control
  • the last symbol of the slot (symbol numbered 13) is used for the guard interval (Guard period, GP).
  • the second symbol (symbol numbered 1) to the penultimate symbol (symbol numbered 12) on the time slot can be used to transmit the physical sidelink shared channel (PSSCH) .
  • PSSCH physical sidelink shared channel
  • the time slot can also include a physical sidelink feedback channel (PSFCH).
  • PSFCH physical sidelink feedback channel
  • the first symbol (symbol numbered 0) is used as AGC and the last symbol (symbol numbered 13) is used as GP
  • the twelfth symbol (symbol numbered 11) and the thirteenth symbol (symbol numbered 12) is used to transmit the PSFCH.
  • a symbol before the PSFCH (symbol numbered 10) is a null symbol that does not perform transceiver conversion, and is used to support the transceiver conversion between PSSCH and PSFCH.
  • the second symbol (symbol numbered 1) to the fifth to last symbol (symbol numbered 9) on the time slot can be used to transmit the PSSCH.
  • the transmitter can only send data on the symbols used for transmitting PSSCH in this time slot (as the first message described below), and no data is sent on symbols other than the symbols used for transmitting PSSCH in this time slot.
  • the receiver also receives and demodulates data on the symbols used to transmit the PSSCH.
  • symbols on the time slot that are not used for transmitting data need to be aligned between the transmitter and the receiver.
  • the transmitter and receiver need to be aligned on the time slot The first and last symbols are not used to transmit data.
  • the transmitter and receiver need to align the first symbol, the eleventh symbol to the last symbol on the time slot and are not used to transmit data.
  • symbols on the time slot that are not used for transmitting data need to be aligned between the transmitter and the receiver.
  • the transmitter and receiver need to align the first symbol and the last symbol on the time slot not to transmit data.
  • the transmitter and receiver need to align the first symbol, the eleventh symbol to the last symbol on the time slot and are not used to transmit data.
  • embodiments of the present application provide a communication method that can dynamically determine which symbols can transmit data and which symbols cannot transmit data based on the actual transmission situation of the time slot, and then use all transmittable data accordingly symbols, thereby improving data transmission efficiency.
  • the embodiments of the present application can be applied to a wireless communication system including a first communication device and a second communication device.
  • the first communication device is a network device
  • the second communication device is a terminal device.
  • the first communication device may be the network device 110 shown in FIG. 1
  • the second communication device may be the terminal device 120 or the terminal device 130 shown in FIG. 1 .
  • the first communication device and the second communication device are both terminal devices.
  • the first communication device may be the terminal device 120 shown in FIG. 1
  • the second communication device may be the terminal device 130 shown in FIG. 1 .
  • the first communication device may be the terminal device 130 shown in FIG. 1
  • the second communication device may be the terminal device 120 shown in FIG. 1 .
  • FIG 4 is a schematic flow chart of an example communication method 200 provided by an embodiment of the present application. As shown in Figure 4, the communication method 200 includes S210 and S220.
  • the first communication device determines the first symbol set.
  • the first symbol set may include one or more symbols, and the first symbol set may also be an empty set.
  • the embodiment of the present application does not limit the number of symbols included in the first symbol set.
  • the first symbol set may also be referred to as a set of symbols that require rate matching in the time slot.
  • the embodiment of the present application does not limit the type of time slot and the number of symbols included in the time slot.
  • the number of symbols in the time slot is S
  • S is an integer
  • the time slot may be a complete time slot.
  • the above M can be a maximum of 13. If the complete time slot includes 12 symbols, the above M can be a maximum of 11.
  • the time slot may be a partial time slot.
  • this part of the time slot can include 7 symbols
  • the above M can be a maximum of 6. If this part of the time slot includes 6 symbols, the above M can be a maximum of 5.
  • the time slot may be a mini-slot.
  • the number of symbols included in the mini-slot is an integer.
  • the embodiment of the present application does not limit the value of the number of symbols included in the mini-slot.
  • the number of symbols included in a mini-slot may be smaller than the number of symbols included in a full slot.
  • the number of symbols included in a mini-slot may be 1, 2, 3, 4, 6 or 7.
  • the above-mentioned M can be a maximum of 3.
  • Case A the first symbol set only includes at least one symbol from the penultimate M-th symbol to the penultimate symbol in the time slot; case B: the first symbol set includes only In addition to at least one symbol from the penultimate M-th symbol to the penultimate symbol, the first symbol and/or the last symbol of the slot may also be included; Case C: The first symbol set only includes the first symbol of the slot symbol and/or the last symbol.
  • the embodiments of the present application do not limit the uses of the penultimate M-th symbol to the penultimate symbol.
  • the penultimate M-th symbol to the penultimate symbol may be used to transmit feedback channels, transmit synchronization signals, control signaling, etc.
  • the value of M is configured by signaling or predefined.
  • the value of M can be predefined together with the number of symbols occupied by PSFCH transmission in the time slot.
  • the value of M can be 2, 3 or 4.
  • the value of M can be 2, 3, 4 or 5.
  • the value of M can also be configured on the resource pool together with the number of symbols occupied by PSFCH transmission in the time slot.
  • the penultimate M-th symbol to the penultimate symbol include symbols corresponding to the PSFCH.
  • the symbols corresponding to PSFCH can be understood as symbols related to the transmission of PSFCH.
  • the symbols corresponding to PSFCH may include symbols occupied by PSFCH transmission, or the symbols corresponding to PSFCH may include symbols occupied by PSFCH transmission and symbols before the symbols occupied by PSFCH transmission. One or two symbols.
  • the penultimate M-th symbol to the penultimate symbol include the feedback channel (such as the physical uplink control channel). , PUCCH)) corresponding symbol.
  • PUCCH physical uplink control channel
  • the description below takes the M-th symbol to the second-to-last symbol as symbols corresponding to the PSFCH as an example.
  • the M-th symbol from the bottom should not be the first symbol, that is, the maximum value of M is a value less than the total number of symbols in the timeslot. For example, if the time slot includes 14 symbols, the maximum value of M is a value less than 14, that is, the maximum value of M is 13. For another example, if the time slot includes 7 symbols, the maximum value of M is a value less than 7, that is, the maximum value of M is 6.
  • the first communication device determines the first symbol set when the first symbol set includes at least one symbol from the penultimate M-th symbol to the penultimate symbol in the time slot is first described.
  • the first communication device determines the first symbol set according to the first reference information.
  • the first reference information is used to indicate the transmission direction of the PSFCH.
  • the transmission direction of the PSFCH may also be called the feedback direction of the PSFCH, or whether the PSFCH resource is used for sending or receiving. Furthermore, this application takes the transmission direction of the PSFCH as transmission as an example for explanation.
  • the transmission direction of PSFCH includes two situations. Case 1: The transmission direction of PSFCH is reception; Case 2, the transmission direction of PSFCH is transmission. The following takes case 1 and case 2 as examples to introduce S210 in detail.
  • the first set of symbols includes the two symbols preceding the symbol occupied by the PSFCH transmission and the symbol occupied by the PSFCH transmission.
  • the number of symbols occupied by PSFCH transmission is (M-3), and M is greater than or equal to 4.
  • the two symbols before the symbol occupied by PSFCH transmission and the symbol occupied by PSFCH transmission are the symbols corresponding to PSFCH.
  • the number of symbols occupied by PSFCH transmission may be configured for signaling, predefined, or configured on a resource pool.
  • the number of symbols occupied by PSFCH transmission is 1, 2, 3 or 4.
  • the number of symbols occupied by PSFCH transmission may be configured together with the transmission format (format) of PSFCH.
  • different PSFCH channel formats can configure different number of symbols occupied by PSFCH transmission.
  • the number of symbols occupied by PSFCH transmission corresponding to PSFCH format 0 is 1 or 2
  • the number of symbols occupied by PSFCH transmission corresponding to PSFCH format 1 can be configured as 1, 2 or 4.
  • symbols occupied by PSFCH transmission do not include AGC symbols supporting PSFCH. Then, the number of symbols occupied by PSFCH transmission is the number of symbols required for actual transmission of PSFCH.
  • symbols occupied by PSFCH transmission include AGC symbols supporting PSFCH.
  • the AGC symbol is the symbol obtained by copying the first symbol actually transmitted by the PSFCH (the symbol numbered 0 as shown in Figure 5), and this AGC symbol is used as the first symbol occupied by the PSFCH transmission.
  • the number of symbols occupied by PSFCH transmission includes: the symbols required for actual transmission of PSFCH and the number of AGC symbols.
  • the symbols occupied by PSFCH transmission do not include AGC symbols supporting PSFCH as an example.
  • the first symbol set includes the fourth to last symbol to the second to last symbol on the time slot, that is to say , the first symbol set includes the eleventh symbol (the symbol numbered 10 shown in (a) in Figure 6) to the thirteenth symbol (the symbol numbered 12 shown in (a) in Figure 6) on the time slot. symbol).
  • the first symbol set includes the fifth to last symbol to the second to last symbol on the time slot, that is, Say, the first symbol set includes the tenth symbol (the symbol numbered 9 shown in (b) in Figure 6) to the thirteenth symbol (the symbol numbered 12 shown in (b) in Figure 6) on the time slot. symbol).
  • the first communication device if the transmission direction of the PSFCH is transmission, the first communication device further needs to determine the first symbol set based on the second information.
  • the second information is used to indicate whether the PSFCH is frequency division multiplexed. Whether PSFCH is frequency division multiplexed includes two situations. Case 21: PSFCH is frequency division multiplexed; Case 22: PSFCH is not frequency division multiplexed. The following takes case 21 and case 22 as examples to introduce S210 in detail.
  • the transmission direction of PSFCH is transmission, there is no need for symbols used for transmission and reception conversion between the transmission symbols of PSSCH and the transmission symbols of PSFCH.
  • PSFCH is frequency division multiplexing, that is, multiple terminal devices use PSFCH.
  • the number of users using PSFCH is greater than the number of users using PSSCH.
  • one symbol is required between PSSCH and PSFCH for AGC of PSFCH in order to handle this change in received power. Therefore, the first symbol set includes a symbol before the symbol occupied by PSFCH transmission and the symbol occupied by PSFCH transmission.
  • the number of symbols occupied by PSFCH transmission is (M-2), and M is greater than or equal to 3.
  • one symbol before the symbol occupied by PSFCH transmission and the symbol occupied by PSFCH transmission are symbols corresponding to PSFCH.
  • the first symbol set includes the third to last symbol and the second to last symbol on the time slot, that is to say , the first symbol set includes the twelfth symbol on the time slot (the symbol numbered 11 shown in (c) in Figure 6) and the thirteenth symbol (the symbol numbered 12 shown in (c) in Figure 6 symbol).
  • the first symbol set includes the penultimate symbol value of the fourth to last symbol value on the time slot, that is, Say, the first symbol set includes the eleventh symbol (the symbol numbered 10 shown in (d) in Figure 6) to the thirteenth symbol (the symbol numbered 12 shown in (d) in Figure 6) on the time slot. symbol).
  • the transmission direction of PSFCH is transmission, there is no need for symbols used for transmission and reception conversion between the transmission symbols of PSSCH and the transmission symbols of PSFCH.
  • PSFCH is not frequency division multiplexed, that is, one terminal device uses PSFCH.
  • the number of users using PSFCH is equal to the number of users using PSSCH.
  • the second parameter information is also used to indicate whether the user using the PSFCH and the user using the PSSCH are the same.
  • the first symbol set includes symbols occupied by PSFCH transmission.
  • the number of symbols occupied by PSFCH transmission is (M-1), and M is greater than or equal to 2.
  • the symbols occupied by PSFCH transmission are symbols corresponding to PSFCH.
  • the first symbol set includes the penultimate symbol on the time slot. That is to say, the first symbol set includes The thirteenth symbol on the time slot (symbol numbered 12 shown in (e) in Figure 6).
  • the first symbol set includes the third to last symbol and the second to last symbol on the time slot, that is, Say, the first symbol set includes the twelfth symbol (numbered 11 shown in (f) in Figure 6) and the thirteenth symbol (numbered 12 shown in (f) in Figure 6) on the time slot. symbol).
  • the first symbol set includes a symbol before the symbol occupied by PSFCH transmission and the symbol occupied by PSFCH transmission.
  • the number of symbols occupied by PSFCH transmission is (M-2), and M is greater than or equal to 3.
  • one symbol before the symbol occupied by PPSFCH transmission and the symbol occupied by PSFCH transmission are symbols corresponding to PSFCH.
  • the first communication device further needs to determine the first symbol set based on the third information.
  • the third information is used to indicate the broadcast type of PSFCH.
  • the broadcast type of PSFCH includes two cases, case 21': the broadcast type of PSFCH is multicast; case 22', the broadcast type of PSFCH is unicast.
  • the third information indicates that the broadcast type is unicast, it indicates that the current link between the first communication device and the second communication device is a unicast link.
  • Unicast means that in one time slot, both PSSCH and PSFCH are only used for the transmission of one user. That is, there is no frequency division multiplexing.
  • the last symbol of the time slot may be GP or not GP. These are just two different description terms and do not constitute a restriction on transmission or rate matching on the time slot.
  • the symbols included in the first symbol set described in S210 do not consider the last symbol of the time slot.
  • the symbols included in the first symbol set described in S210 need to consider the last symbol of the time slot. That is to say, the first symbol set described in S210 should include at least one symbol from the Mth to last symbol to the first to last symbol in the time slot.
  • the above describes how the first communication device determines the first symbol set when the first symbol set includes at least one symbol from the penultimate M-th symbol to the penultimate symbol in the time slot.
  • a description is given of how the first communication device determines the first symbol set when the first symbol set includes the first symbol and/or the last symbol.
  • the first communication device determines whether the first symbol set includes the first symbol according to the fifth information.
  • the fifth information is used to indicate whether there is a signal transmitted by cyclic prefix extension (CPE) before the first symbol of the time slot.
  • CPE cyclic prefix extension
  • the first communication device needs to use the first symbol of the time slot for AGC, so the first symbol set includes the first symbol.
  • the first communication device can use the CPE signal for AGC. Therefore, the first communication device does not need to use the first symbol of the time slot for AGC. AGC, then the first symbol set does not include the first symbol.
  • the first communication device when there is a signal transmitted by the CPE before the first symbol of the time slot, and the duration of the CPE signal is greater than or equal to the preset duration, the first communication device does not need to use the first symbol of the time slot. symbols are used for AGC, so the first symbol set does not include the first symbol.
  • the first communication device when there is a signal transmitted by the CPE before the first symbol of the time slot, and the CPE signal is less than the preset duration, the first communication device needs to use the first symbol of the time slot for AGC, so the first symbol set includes the first symbol.
  • the first communication device determines whether the first set of symbols includes the first symbol based on the sixth information.
  • the sixth information is used to indicate whether the time slot is continuously transmitted in the time domain.
  • whether the time slot is continuously transmitted in the time domain includes whether the time slot is continuous with the previous time slot in the time domain and whether the time slot is continuous with the next time slot in the time domain.
  • the time slot and the previous time slot are two adjacent time slots
  • the time slot and the next time slot are two adjacent time slots.
  • the first symbol of the time slot can continue to transmit the first message, so the first communication device does not need to use the first symbol of the time slot.
  • the first symbol set does not include the first symbol.
  • the first communication device needs to use the first symbol of the time slot for AGC, so the first symbol set includes the first symbol.
  • the first communication device determines whether the first symbol set includes the last symbol according to the sixth information.
  • the last symbol of the time slot can continue to transmit the first message, so the first communication device does not need to use the last symbol of the time slot for GP. (That is, there is no need to switch from the transmitting state to the receiving state), then the first symbol set does not include the last symbol.
  • the first communication device needs to use the last symbol of the time slot for GP, so the first symbol set includes the last symbol.
  • the first message described in S210 includes data and/or control information.
  • the control information includes SCI, medium access control control element (MAC CE) information, and PC5 RRC information; the data includes side data on the link.
  • MAC CE medium access control control element
  • the control information includes uplink control information and/or downlink control information; the data includes data on the cellular link.
  • S220 The first communication device sends the first indication information to the second communication device.
  • the second communication device receives the first indication information sent by the first communication device.
  • the first indication information is used to indicate the first symbol set.
  • the first symbol set only includes at least one symbol from the M-th symbol to the second-to-last symbol
  • Method 1 the first communication device directly indicates the first symbol set through the first indication information
  • the first communication device may directly indicate the first symbol set through the first field in the first indication information.
  • the first indication information may be SCI.
  • the first field may be a newly added field in the SCI.
  • This embodiment of the present application does not limit the value of the bit used in the first field.
  • the first field may use 2 bits to indicate the first set of symbols.
  • the first consistent set can be considered to be an empty set, that is, there is no need to determine the symbols included in the first symbol set from the M-th symbol to the penultimate symbol at this time; If the first field indicates 01, it can be considered that the first symbol set includes the symbols occupied by PSFCH transmission; if the first field indicates 10, it can be considered that the first symbol set includes one symbol before the symbol occupied by PSFCH transmission and the symbol occupied by PSFCH transmission. symbol; if the first field indicates 11, the first symbol set can be considered to include the two symbols before the symbol occupied by PSFCH transmission and the symbol occupied by PSFCH transmission.
  • Method 2 The first communication device indirectly indicates the first symbol set through the first indication information.
  • the first indication information includes first information, second information and third information, and at least one of the first information, second information and third information is used to indicate the first symbol set.
  • the first information is used to indicate sending or receiving PSFCH; the second information is used to indicate whether PSFCH is frequency division multiplexed; and the third information is used to indicate the broadcast type of PSFCH.
  • the second information used to indicate whether the PSFCH is frequency division multiplexed can be replaced by: the second information used to indicate whether the PSFCH is frequency division multiplexed and/or whether the PSFCH is code division multiplexed.
  • the second information is used to indicate whether the PSFCH is frequency division multiplexed as an example.
  • the first indication information may be SCI for scheduling or indicating PSSCH, or COT indication information.
  • the COT indication information may be used to instruct the second communication device to transmit according to the indicated resources on the COT.
  • the first information, the second information, and/ Or the third information may be carried in the SCI or COT indication information that schedules or indicates the PSSCH.
  • first information, the second information and/or the third information can also be configured in the resource pool.
  • the first communication device does not need to perform S220, that is, does not need to send the first instruction information to the second communication device, and the second communication device can directly obtain the first information, the second information and/or the third information from the resource pool.
  • the first information may include a second field, and the second field is used to indicate sending or receiving the PSFCH.
  • the second field may use 1 bit to indicate sending or receiving the PSFCH.
  • the second field indicates 0, it can be considered that the PSFCH is sent. If the second field indicates 1, it can be considered that the PSFCH is received.
  • the second information may indicate that the PSFCH resource is used by a single device, or used by multiple devices in a frequency division multiplexing or code division multiplexing manner.
  • the second information may include a third field, and the third field is used to indicate whether the PSFCH is frequency division multiplexed.
  • the third field may use 1 bit to indicate whether the PSFCH is frequency division multiplexed.
  • the third field indicates 0, it may be considered that the PSFCH is not frequency division multiplexed. If the third field indicates 1, it can be considered that PSFCH frequency division multiplexing is used.
  • the third information may include a fourth field, and the fourth field is used to indicate a cast type of the PSFCH.
  • the fourth field may use 1 or 2 bits to indicate the broadcast type of the PSFCH.
  • the broadcast type of PSFCH can be considered to be unicast; if the fourth field indicates 1, the broadcast type of PSFCH can be considered to be multicast.
  • Method 3 The first communication device jointly indicates the first symbol set through multiple pieces of information in the first indication information.
  • the first indication information includes first information, second information, third information and fourth information. At least one of the first information, second information and third information and the fourth information are used to indicate the first Symbols collection. Wherein, the first information is used to indicate sending or receiving
  • the second information is used to indicate whether PSFCH is frequency division multiplexed; the third information is used to indicate the broadcast type of PSFCH.
  • the first information, the second information and/or the third information can also be configured in the resource pool.
  • the first indication information may only include the fourth information, excluding the first information, the second information and/or the third information, and the second communication device can directly obtain the first information, the second information and the third information from the resource pool. /or third information.
  • the first indication information may be SCI.
  • the content indicated by the fourth information may be indicated by a newly added field in the SCI.
  • the first information may include a second field, and the second field is used to indicate sending or receiving the PSFCH.
  • the second information may include a third field, and the third field is used to indicate whether the PSFCH is frequency division multiplexed.
  • the third information may include a fourth field, and the fourth field is used to indicate the broadcast type of the PSFCH.
  • the fourth information may include a fifth field.
  • the second field may use 1 bit
  • the third field may use 1 bit
  • the fourth field may use at least one of the 1 bits
  • the fifth field may use 1 bit to jointly indicate the first symbol set.
  • the first consistent set can be considered to be an empty set, that is, this It is not necessary to determine the symbols included in the first symbol set from the penultimate M-th symbol to the penultimate symbol; if the fifth field indicates 0 and the second field indicates 1, it can be considered that the first symbol set includes the symbols occupied by PSFCH transmission.
  • the first symbol set can be considered to include a symbol before the symbol occupied by PSFCH transmission and the symbol occupied by PSFCH transmission; if the fifth field indicates 1, the second field indicates 1, then it can be considered that the first symbol set includes the two symbols before the symbols occupied by PSFCH transmission and the symbols occupied by PSFCH transmission.
  • the first symbol set includes at least one symbol from the penultimate M-th symbol to the penultimate symbol, and the first symbol and/or the last symbol
  • Method 1' the first communication device directly indicates the first symbol set through the first indication information
  • the first communication device may directly indicate the first symbol set through the first field in the first indication information.
  • This embodiment of the present application does not limit the value of the bit used in the first field.
  • the first field uses 4 bits to indicate the first set of symbols.
  • Table 1 shows an example of the first field using 4 bits to indicate the first symbol set.
  • the first symbol* described in Table 1 and Tables 2 to 4 described below is the first time slot in which the time slot is COT, or the first symbol before the time slot When there is a signal transmitted by the CPE, and the CPE signal is less than the preset duration.
  • reserved value involved in this application can be understood as a state or code point in which the value of the bit used in the field is not used or reserved.
  • the symbol occupied by PSFCH transmission is the 12th symbol of the time slot, and the number of symbols in the time slot is 7. So,
  • the first communication device indirectly indicates the first symbol set through the first indication information
  • the first indication information includes first information, second information, third information, fifth information and sixth information.
  • the fifth information or sixth information is the same as the first information, the second information and the third information.
  • At least one item of is used to indicate the first symbol set.
  • the first information is used to indicate sending or receiving PSFCH;
  • the second information is used to indicate whether PSFCH is frequency division multiplexed;
  • the third information is used to indicate the broadcast type of PSFCH;
  • the fifth information is used to indicate the first symbol of the timeslot. Whether there is a signal transmitted by the CPE before;
  • the sixth information is used to indicate whether the time slot is continuously transmitted in the time domain.
  • the first information, the second information, and/or the third information may be carried in SCI or COT indication information that schedules or indicates the PSSCH.
  • the fifth information may be carried in the SCI, COT indication information, MAC CE or PC5 RRC that schedules or indicates the current transmission.
  • the sixth information may be carried in the SCI, COT indication information, MAC CE or PC5 RRC that schedules or indicates the current transmission.
  • first information, second information, third information, fifth information and/or sixth information can also be configured in the resource pool.
  • the first communication device does not need to perform S220, that is, it does not need to send the first instruction information to the second communication device.
  • the second communication device can directly obtain the first information, the second information, the third information, and the fifth information from the resource pool. information and/or sixth information.
  • the first information may include a second field, and the second field is used to indicate sending or receiving the PSFCH.
  • the second information may include a third field, and the third field is used to indicate whether the PSFCH is frequency division multiplexed.
  • the third information may include a fourth field, and the fourth field is used to indicate the broadcast type of the PSFCH.
  • the fifth information may include a sixth field, and the sixth field is used to indicate whether there is a signal transmitted by the CPE before the first symbol of the time slot.
  • the sixth information may include a seventh field, and the seventh field is used to indicate whether the time slot is continuously transmitted in the time domain.
  • the sixth field may use 1 bit or 1 bit used by the sixth field, and the second field may use 1 bit, the third field may use 1 bit, and the fourth field may use at least one of 1 bit.
  • the union indicates the first set of symbols.
  • Table 2 shows an example in which the sixth field uses 1 bit, the second field uses 1 bit, the third field uses 1 bit, and the fourth field uses 1 bit to jointly indicate the first symbol set.
  • Method 3' the first communication device jointly indicates the first symbol set through multiple pieces of information in the first indication information.
  • the first indication information includes first information, second information, third information, fifth information, sixth information, and seventh information.
  • the seventh information is the same as the first information, the second information, the third information, At least one of the fifth information and the sixth information is used to indicate the first symbol set.
  • the first information is used to indicate sending or receiving PSFCH;
  • the second information is used to indicate whether PSFCH is frequency division multiplexed;
  • the third information is used to indicate the broadcast type of PSFCH;
  • the fifth information is used to indicate the first symbol of the timeslot. Whether there is a signal transmitted by the CPE before;
  • the sixth information is used to indicate whether the time slot is continuously transmitted in the time domain.
  • the first information, second information, third information, fifth information and/or sixth information can also be configured in the resource pool.
  • the first indication information may only include the seventh information, excluding the first information, the second information, the third information, the fifth information and/or the sixth information, and the second communication device can obtain it directly from the resource pool.
  • first information, second information, third information, fifth information and/or sixth information may be SCI.
  • the content indicated by the seventh information may be indicated by a newly added field in the SCI.
  • the first information may include a second field, and the second field is used to indicate sending or receiving the PSFCH.
  • the second information may include a third field, and the third field is used to indicate whether the PSFCH is frequency division multiplexed.
  • the third information may include a fourth field, and the fourth field is used to indicate the broadcast type of the PSFCH.
  • the fifth information may include a sixth field, and the sixth field is used to indicate whether there is a signal transmitted by the CPE before the first symbol of the time slot.
  • the sixth information may include a seventh field, and the seventh field is used to indicate whether the time slot is continuously transmitted in the time domain.
  • the seventh information includes an eighth field.
  • the eighth field may use 2 bits, the second field may use 1 bit, the third field may use 1 bit, the fourth field may use 1 bit, the sixth field may use 1 bit, and the seventh field may At least one of the 1 bits is used to jointly indicate the first set of symbols.
  • Table 3 shows an example in which the eighth field uses 2 bits, the sixth field uses 1 bit, and the seventh field uses 1 bit to jointly indicate the first symbol set.
  • Table 4 shows an example in which the eighth field uses 2 bits, the sixth field uses 1 bit, the seventh field uses 1 bit, and the third field uses 1 bit to jointly indicate the first symbol set.
  • Method 4' the first communication device individually indicates the first symbol set according to the symbol area through the first indication information.
  • the first indication information includes eighth information, and the first indication information also includes ninth information and/or tenth information.
  • the eighth information is used to indicate the symbols from the penultimate M-th symbol to the penultimate symbol that are not occupied by the first message transmission;
  • the ninth information is used to indicate whether the first symbol is a symbol that is not occupied by the first message transmission;
  • the tenth information is used to indicate whether the last symbol is the first message transmitted Not occupied symbols.
  • mode 4a1', mode 4a2' and mode 4a3' as examples, how the first communication device in mode 4' indicates through the eighth information that the first message transmission in the penultimate M-th symbol to the penultimate symbol is not occupied symbols are explained in detail.
  • the eighth information directly indicates the symbols from the M-th symbol to the penultimate symbol that are not occupied by the first message transmission.
  • the eighth information includes a ninth field, and the ninth field is used to indicate symbols from the penultimate M-th symbol to the penultimate symbol that are not occupied by the first message transmission.
  • the first indication information may be SCI.
  • the ninth field may be a newly added field in the SCI. This embodiment of the present application does not limit the value of the bit used in the ninth field.
  • the ninth field may use 2 bits to indicate the first set of symbols.
  • the first matching set can be considered to be an empty set. That is to say, there is no need to determine the symbols included in the first symbol set from the M-th symbol to the penultimate symbol at this time; If the ninth field indicates 01, it can be considered that the first symbol set includes the symbols occupied by PSFCH transmission; if the ninth field indicates 10, it can be considered that the first symbol set includes one symbol before the symbol occupied by PSFCH transmission and the symbol occupied by PSFCH transmission. symbol; if the ninth field indicates 11, the first symbol set can be considered to include the two symbols before the symbol occupied by PSFCH transmission and the symbol occupied by PSFCH transmission.
  • the eighth information indirectly indicates the symbols from the penultimate M-th symbol to the penultimate symbol that are not occupied by the first message transmission.
  • the eighth information includes first information, second information and third information, and at least one of the first information, second information and third information is used to indicate the M-th symbol to the second-to-last symbol
  • the first message transmits symbols not occupied by the message; wherein, the first information is used to indicate sending or receiving the PSFCH; the second information is used to indicate whether the PSFCH is frequency division multiplexed; and the third information is used to indicate the broadcast type of the PSFCH.
  • the first information, the second information and/or the third information can also be configured in the resource pool.
  • the first indication information may not include the eighth information, and the second communication device can directly obtain the eighth information from the resource pool, that is, obtain the first information, the second information and/or the third information.
  • the eighth information jointly indicates the symbols from the penultimate M-th symbol to the penultimate symbol that are not occupied by the first message transmission through multiple pieces of information.
  • the eighth information includes first information, second information, third information and fourth information, and the fourth information and at least one of the first information, the second information or the third information are used to indicate the Mth from the bottom symbols not occupied by the first message transmission among the symbols to the penultimate symbol; wherein, the first information is used to indicate sending or receiving PSFCH; the second information is used to indicate whether PSFCH is frequency division multiplexed; the third information is used to indicate The broadcast type of PSFCH.
  • the first information, the second information and/or the third information can also be configured in the resource pool.
  • the eighth information in the first indication information may not include the first information, the second information and/or the third information, and the second communication device directly obtains the first information, the second information and/or the third information from the resource pool. information.
  • the first indication information may be SCI.
  • the content indicated by the fourth information may be indicated by a new field in the SCI
  • mode 4b1' and mode 4b2' as examples, a detailed description will be given of how the first communication device in mode 4' indicates through the ninth information whether the first symbol is a symbol not occupied by the first message transmission.
  • the ninth information directly indicates whether the first symbol is a symbol not occupied by the first message transmission.
  • the ninth information includes a tenth field, which is used to indicate whether the first symbol is a symbol not occupied by the first message transmission.
  • the first indication information may be SCI.
  • the tenth field may be a newly added field in the SCI.
  • the tenth field may use 1 bit to indicate whether the first symbol is a symbol not occupied by the first message transmission.
  • the first symbol set does not include the first symbol. If the tenth field indicates 1, it can be considered that the first symbol is a symbol not occupied by the first message transmission. At this time, the first symbol set includes the first symbol.
  • the ninth information indirectly indicates whether the first symbol is a symbol not occupied by the first message transmission.
  • the ninth information is used to indicate at least one of the following: whether there is a signal transmitted by the CPE before the first symbol of the time slot, when Whether the slot is continuously transmitted in the time domain, the redundancy version number (RV) version and the number of retransmissions.
  • RV redundancy version number
  • the ninth information can also be configured in the resource pool.
  • the first indication information may not include the ninth information, and the second communication device can obtain the ninth information directly from the resource pool.
  • the ninth information is used to indicate whether there is a signal transmitted by the CPE before the first symbol of the time slot.
  • the ninth information can also be configured in the resource pool.
  • the first indication information may not include the ninth information, and the second communication device directly obtains the ninth information from the resource pool.
  • the ninth information includes a tenth field, which is used to indicate whether there is a signal transmitted by the CPE before the first symbol of the time slot.
  • the tenth field may use 1 bit to indicate whether there is a signal transmitted by the CPE before the first symbol of the time slot.
  • the first symbol set includes the first symbol. If the tenth field indicates 1, it can be considered that there is a signal transmitted by the CPE before the first symbol of the time slot. At this time, the first symbol set does not include the first symbol.
  • the ninth information is used to indicate whether the time slots are continuously transmitted in the time domain.
  • the ninth information includes a tenth field, which is used to indicate whether the time slots are continuously transmitted in the time domain.
  • the tenth field may use 1 bit to indicate whether the time slots are continuously transmitted in the time domain.
  • the tenth field indicates 0, it can be considered that the time slot is transmitted discontinuously in the time domain, and at this time, the first symbol set includes the first symbol. If the tenth field indicates 1, it can be considered that the time slots are continuously transmitted in the time domain. At this time, the first symbol set does not include the first symbol.
  • the ninth information is used to indicate a redundancy version number (RV) version and the number of retransmissions.
  • RV redundancy version number
  • the ninth information may indicate that the sequence of RV versions used when retransmitting a data packet is [0, 2, 3, 1], and the number of retransmissions is N, where N>1.
  • the number of retransmissions is 2 and the current RV version is 0, it means that this is the first transmission of the retransmission, and the first symbol of the timeslot needs to be used as AGC, that is, the first symbol set includes the first symbol.
  • the number of retransmissions is 2 and the current RV version is 2, it means that this is the second transmission of the retransmission, and the first symbol of the slot does not need to be used as AGC, that is, the first symbol set does not include the first symbol.
  • mode 4c1' and mode 4c2' as examples, a detailed description will be given of how the first communication device in mode 4' indicates through the tenth information whether the last symbol is a symbol not occupied by the first message transmission.
  • the tenth information directly indicates whether the last symbol is a symbol not occupied by the first message transmission.
  • the tenth information includes an eleven field, which is used to indicate whether the last symbol is a symbol not occupied by the first message transmission.
  • the first indication information may be SCI.
  • the eleventh field may be a newly added field in the SCI.
  • the eleventh field may use 1 bit to indicate whether the last symbol is a symbol not occupied by the first message transmission.
  • the eleventh field indicates 0, it can be considered that the last symbol is not a symbol not occupied by the first message transmission. At this time, the first symbol set does not include the first symbol. If the eleventh field indicates 1, it can be considered that the last symbol is a symbol not occupied by the first message transmission. At this time, the first symbol set includes the first symbol.
  • the tenth information indirectly indicates whether the last symbol is a symbol not occupied by the first message transmission.
  • the tenth information is used to indicate at least one of the following: whether the time slots are continuously transmitted in the time domain, the redundancy version number (redundancy version number, RV) version and the number of retransmissions.
  • the tenth information can also be configured in the resource pool.
  • the first indication information may not include the tenth information, and the second communication device can obtain the tenth information directly from the resource pool.
  • the tenth information is used to indicate whether the time slots are continuously transmitted in the time domain.
  • the tenth information can also be configured in the resource pool.
  • the first indication information may not include the tenth information, and the second communication device directly obtains the tenth information from the resource pool.
  • the tenth information includes an eleventh field, which is used to indicate whether the time slots are continuously transmitted in the time domain.
  • the eleventh field may use 1 bit to indicate whether the time slot is continuously transmitted in the time domain.
  • the eleventh field indicates 0, it can be considered that the time slot is transmitted discontinuously in the time domain, and at this time, the first symbol set includes the last symbol. If the eleventh field indicates 1, the time slots can be considered to be transmitted continuously in the time domain. At this time, the first symbol set includes the last symbol.
  • the tenth information is used to indicate the RV version and the number of retransmissions.
  • the sequence of RV versions used when retransmitting a data packet is [0,2,3,1]; the number of retransmissions is N, where N>1.
  • the last symbol of the slot is not used as GP, that is, the first symbol set does not include the last symbol.
  • the last symbol of the timeslot is used as GP, that is, the first symbol
  • the set includes the last symbol.
  • the first symbol set only includes the first symbol and/or the last symbol
  • the first communication device directly indicates the first symbol set through the first indication information
  • the first communication device may directly indicate the first symbol set through the first field in the first indication information.
  • This embodiment of the present application does not limit the value of the bit used in the first field.
  • the first field may use 1 bit to indicate the first set of symbols.
  • the first matching set can be considered to be an empty set, that is, there is no need to determine the symbols included in the first symbol set from the first symbol and/or the last symbol at this time, that is, All symbols from the second symbol to the penultimate symbol of the slot can be used for transmission; if the first field indicates 1, the first symbol set can be considered to include the first symbol or the last symbol.
  • the first field uses 2 bits to indicate the first set of symbols.
  • the first matching set can be considered to be an empty set, that is, there is no need to determine the symbols included in the first symbol set from the first symbol and/or the last symbol at this time, that is, All symbols from the second symbol to the penultimate symbol of the slot can be used for transmission; if the first field indicates 01, it can be considered that the first symbol set includes the last symbol; if the first field indicates 10, it can be considered that The first set of symbols includes the first symbol. If the first field indicates 11, it can be considered that the first symbol set includes the first symbol and the last symbol.
  • the first communication device indirectly indicates the first symbol set through the first indication information
  • the first indication information includes fifth information, sixth information and twelfth information, and at least one of the fifth information, sixth information and twelfth information is used to indicate the first symbol set.
  • the fifth information, sixth information and/or twelfth information can also be configured in the resource pool.
  • the first communication device does not need to perform S220, that is, does not need to send the first instruction information to the second communication device, and the second communication device can directly obtain the fifth information, the sixth information and/or the twelfth information from the resource pool. .
  • the fifth information is used to indicate whether there is a signal transmitted by the CPE before the first symbol of the time slot; the sixth information is used to indicate whether the time slot is continuously transmitted in the time domain; the twelfth information is used to indicate the RV version and repeat Number of passes.
  • the fifth information, the sixth information and/or the twelfth information may be carried in the SCI, COT indication information, MAC CE or PC5 RRC that schedules or indicates the current transmission.
  • the fifth information, sixth information and/or twelfth information can also be configured in the resource pool.
  • the first communication device does not need to perform S220, that is, does not need to send the first instruction information to the second communication device, and the second communication device can directly obtain the fifth information and/or the sixth information from the resource pool.
  • the fifth information may include a sixth field, and the sixth field is used to indicate whether there is a signal transmitted by the CPE before the first symbol of the time slot.
  • the sixth field may use 1 bit to indicate whether there is a signal transmitted by the CPE before the first symbol of the time slot.
  • the sixth field indicates 0, it can be considered that there is no signal transmitted by the CPE before the first symbol of the time slot. At this time, the first symbol set includes the first symbol. If the sixth field indicates 1, it can be considered that there is a signal transmitted by the CPE before the first symbol of the time slot. At this time, the first symbol set does not include the first symbol.
  • the sixth information may include a seventh field, which is used to indicate whether the time slots are continuously transmitted in the time domain.
  • the seventh field may use 1 bit to indicate whether the time slot is transmitted continuously in the time domain.
  • the seventh field indicates 0, it can be considered that the time slot is transmitted discontinuously in the time domain.
  • the first symbol set includes the first symbol and the last symbol. If the seventh field indicates 1, it can be considered that the time slots are transmitted continuously in the time domain. At this time, the first symbol set does not include the first symbol and the last symbol.
  • the seventh field may use 2 bits to indicate whether the time slots are transmitted continuously in the time domain.
  • the seventh field indicates 00, it can be considered that the time slot is transmitted discontinuously in the time domain.
  • the first symbol set includes the first symbol and the last symbol. If the seventh field indicates 01, it can be considered that the time slot is transmitted discontinuously in the time domain with the previous time slot, and is continuously transmitted with the next time slot in the time domain. At this time, the first symbol set includes the first symbol , excluding the last symbol. If the seventh field indicates 10, it can be considered that the time slot is continuously transmitted in the time domain with the previous time slot, and is not continuously transmitted in the time domain with the following time slot. At this time, the first symbol set does not include the first symbols, including the last symbol. If the seventh field indicates 11, it can be considered that the time slot is continuously transmitted in the time domain with the previous time slot, and is continuously transmitted in the time domain with the following time slot. At this time, the first symbol set does not include the first symbol and the last symbol.
  • the twelfth information may indicate that the sequence of RV versions used when retransmitting a data packet is [0, 2, 3, 1]; the number of retransmissions is N, where N>1.
  • the first symbol of the timeslot needs to be used as AGC, that is, the first symbol set includes the first symbol. Furthermore, the last symbol of the slot is not used as GP, i.e. the first set of symbols does not include the last symbol.
  • the number of retransmissions is 2 and the current RV version is 2, it means that this is the second transmission of the retransmission, that is, the last retransmission, and the first symbol of the timeslot does not need to be used as AGC, that is, the first The set of symbols does not include the first symbol. Furthermore, the last symbol of the slot is used as GP, i.e. the first set of symbols includes the last symbol.
  • the first communication device jointly indicates the first symbol set through multiple pieces of information in the first indication information.
  • the first indication information includes eleventh information, fifth information and sixth information.
  • the fifth information or sixth information, and the eleventh information are used to indicate the first symbol set.
  • the fifth information is used to indicate whether there is a signal transmitted by the CPE before the first symbol of the time slot; the sixth information is used to indicate whether the time slot is continuously transmitted in the time domain.
  • the fifth information and/or sixth information can also be configured in the resource pool.
  • the first indication information may only include the eleventh information, excluding the fifth information and/or the sixth information, and the second communication device can obtain the fifth information and/or the sixth information directly from the resource pool.
  • the fifth information may include a sixth field, and the sixth field is used to indicate whether there is a signal transmitted by the CPE before the first symbol of the time slot.
  • the sixth information may include a seventh field, which is used to indicate whether the time slots are continuously transmitted in the time domain.
  • the eleventh information includes a twelfth field.
  • the twelfth field may use 1 bit, and the sixth field may use 1 bit to jointly indicate the first set of symbols.
  • the first symbol set does not include the first symbol set and the last symbol. If the twelfth field indicates 0 and the sixth field indicates 1, then the first symbol set includes the first symbol and does not include the last symbol. If the twelfth field indicates 1 and the sixth field indicates 0, then the first symbol set does not include the first symbol but includes the last symbol. If the twelfth field indicates 1 and the sixth field indicates 1, then the first symbol set includes the first symbol and the last symbol.
  • the twelfth field may use 1 bit and the seventh field may use 1 bit to jointly indicate the first set of symbols.
  • the first symbol set does not include the first symbol set and the last symbol. If the twelfth field indicates 0 and the seventh field indicates 1, then the first symbol set includes the first symbol and does not include the last symbol. If the twelfth field indicates 1 and the seventh field indicates 0, then the first symbol set does not include the first symbol but includes the last symbol. If the twelfth field indicates 1 and the seventh field indicates 1, then the first symbol set includes the first symbol and the last symbol.
  • method 200 also includes S230, which is executed after S210.
  • S230 is executed after S210.
  • the execution order of S230 and S220 is not limited in this application.
  • the first communication device sends the first message to the second communication device.
  • the first communication device sends the first message to the second communication device according to the first symbol set and the symbols occupied by the time slot.
  • the first communication device may remove the symbols in the first symbol set from the symbols occupied by the time slot to obtain the symbols that can be occupied by the first message, and then calculate the number of symbols that can be occupied by the first message based on the symbols that can be occupied by the first message and the size of the first message. After a message is rate matched, the first message is sent.
  • the second communication device receives the first message sent by the first communication device according to the first indication information.
  • the second communication device decodes the first message according to the first symbol set indicated by the first indication information.
  • the second communication device performs rate matching on the first message according to the first symbol set and the symbols occupied by the time slot, and then decodes the first message.
  • the second communication device can also determine whether the first symbol set includes the SCI received in the time slot and the previous time slot. Include the first symbol.
  • the SCI may carry the identification of the terminal device corresponding to the SCI. If the same terminal device has been scheduled for SCI before, and there is no PSFCH in the previous time slot, or there is PSFCH but the PSFCH is used for transmission, the first symbol in the time slot can transmit the first message. At this time The first set of symbols does not include the first symbol.
  • the transport block size (TBS) of the same data packet when transmitted on different time slots is the same.
  • TBS transport block size
  • resource numbers include the number of available symbols, or the number of available time-frequency resources (such as the number of available resource elements (REs) or physical resource blocks (PRBs)).
  • REs resource elements
  • PRBs physical resource blocks
  • the existing solution does not determine which symbols can transmit TB and which symbols cannot transmit TB based on the actual transmission situation of the time slot, resulting in low TB transmission efficiency.
  • embodiments of the present application also provide another communication method.
  • This communication method can determine which symbols can transmit TB and which symbols cannot transmit TB based on the actual transmission situation of the time slot, thereby improving the transmission accuracy of the transmission block. , improve transmission efficiency.
  • the communication method can also be applied in a wireless communication system including a first communication device and a second communication device.
  • Figure 36 is a schematic flow chart of an example communication method 300 provided by the embodiment of the present application. As shown in Figure 36, the communication method 300 includes S310 and S320.
  • the first communication device determines the number of symbols on the time slot that are not used for transmitting the transport block.
  • the number of symbols is used to determine the size of the transport block, and the number of symbols is an integer greater than or equal to 0 and less than or equal to 5.
  • the number of symbols being 0 can be understood as the number of symbols on the time slot that are not used for transmitting transport blocks. In other words, all symbols on the time slot can be used for transmitting transport blocks.
  • the transport block may transport the first message described in method 200 above.
  • the first message please refer to the relevant description above, which will not be described again here.
  • the first communication device may first determine the first symbol set, and then determine the number of symbols based on the first symbol set.
  • the first matching set please refer to the relevant description in the method 200 above, and.
  • the first communication device determines the first symbol set reference may also be made to the relevant description in the method 200 above, which will not be described again here.
  • the first communications device may directly determine the number of symbols.
  • the number of symbols in the time slot that are not used for transmitting transport blocks includes the number of symbols in the first symbol and/or the last symbol of the time slot that are not used for transmitting transport blocks.
  • S310 specifically includes: determining the number of symbols on the time slot that are not used for transmitting transport blocks based on the first information and the second information.
  • the first information is used to indicate whether there is a signal transmitted by the CPE before the first symbol of the time slot; the second information is used to indicate whether the time slot is continuously transmitted in the time domain.
  • the first information includes a second field, which is used to indicate whether there is a signal transmitted by the CPE before the first symbol of the time slot.
  • the second field may use 1 bit to indicate whether there is a signal transmitted by the CPE before the first symbol of the time slot. If the second field indicates 0, it can be considered that there is a signal transmitted by the CPE before the first symbol of the time slot; if the second field indicates 1, it can be considered that there is no signal transmitted by the CPE before the first symbol of the time slot.
  • the number of symbols not used for transmitting transport blocks in the time slot is increased by 1, and the added symbol is the first symbol of the time slot. If the first information indicates that there is a signal transmitted by the CPE before the first symbol of the time slot, then the number of symbols not used for transmitting transport blocks in the time slot is increased by 0.
  • the second information includes a third field, which is used to indicate whether the time slots are continuously transmitted in the time domain.
  • the third field may use 1 bit to indicate whether transmission is continuous in the time domain.
  • the time slot can be considered to be transmitted discontinuously in the time domain; if the third field indicates 1, the time slot can be considered to be continuously transmitted in the time domain.
  • the second information indicates that the time slot is continuously transmitted in the time domain, then the number of symbols on the time slot that are not used for transmitting the transport block is increased by 0. If the second information indicates that the time slot is non-continuously transmitted in the time domain, then the number of symbols not used for transmitting transport blocks on the time slot is increased by 2, and the two added symbols are the first symbol and the last symbol on the time slot.
  • the third field may use 2 bits to indicate whether transmission is continuous in the time domain.
  • the time slot can be considered to be transmitted discontinuously in the time domain; if the third field indicates 01, the time slot and the following time slot can be considered to be transmitted continuously in the time domain; if the third field indicates 10 , the time slot can be considered to be continuously transmitted in the time domain with the previous time slot; if the third field indicates 11, the time slot can be considered to be continuously transmitted in the time domain with the previous time slot and the next time slot respectively.
  • the second information indicates that the time slot is continuously transmitted in the time domain, then the number of symbols on the time slot that are not used for transmitting the transport block is increased by 0. If the second information indicates that the time slot is continuously transmitted in the time domain with the previous time slot, then the number of symbols not used for transmitting transport blocks in the time slot is increased by 1, and the added symbol is the first symbol in the time slot. If the second information is used to indicate that the time slot and the subsequent time slot are continuously transmitted in the time domain, then the number of symbols not used for transmitting transport blocks in the time slot is increased by 1, and the added symbol is the last symbol in the time slot.
  • the number of symbols not used for transmitting the transport block on the determined time slot is 0, 1 or 2.
  • this S310 specifically includes: determining the number of symbols in the time slot that are not used to send transport blocks according to the third information; wherein the third information is used to indicate the number of symbols in the first symbol and the last symbol that are not occupied by the transport block. .
  • the third information includes a fourth field, which is used to indicate the number of symbols in the first symbol and the last symbol that are not occupied by the transport block.
  • the fourth field may use 1 bit to indicate the number of symbols in the first symbol and the last symbol that are not occupied by the transport block.
  • Table 5 and Table 6 show two examples in which the fourth field jointly indicates the number of symbols in the first symbol and/or the last symbol on the time slot that are not used for transmitting the transport block.
  • this S310 specifically includes: determining the number of symbols on the time slot that are not used to send transport blocks based on the first information, the second information, and the third information; wherein the first information is used to indicate the first symbol of the time slot. Whether there is a signal transmitted by the CPE before; the second information is used to indicate whether the time slot is continuously transmitted in the time domain; the third information is used to indicate whether the first symbol or the last symbol is a symbol not occupied by the transport block.
  • the number of symbols not used for transmitting transport blocks on the time slot is determined based on the first information, the second information, and the third information, which can be understood as the first information, the second information, and the third information jointly indicate the number of symbols on the time slot.
  • the first information includes a second field, which is used to indicate whether there is a signal transmitted by the CPE before the first symbol of the time slot.
  • the second information includes a third field, which is used to indicate whether the time slots are continuously transmitted in the time domain.
  • the third information includes a fourth field, which is used to indicate symbols in the first symbol and the last symbol that are not occupied by the transport block.
  • the second field or the third field, jointly with the fourth field, indicates the number of symbols in the first symbol and/or the last symbol on the time slot that are not used for transmitting the transport block.
  • the second field may use 1 bit to indicate whether there is a signal transmitted by the CPE before the first symbol of the time slot.
  • the third field can use 1 bit to indicate whether the time slot is transmitted continuously in the time domain.
  • the fourth field may also use 1 bit to indicate the number of symbols in the first symbol or last symbol that are not occupied by the transport block.
  • Table 7 shows an example of the second field or the third field, which together with the fourth field indicates the number of symbols in the first symbol and/or the last symbol on the time slot that are not used for transmitting the transport block.
  • the number of symbols not used for transmitting the transport block in the determined time slot is 0, 1 or 2.
  • the number of symbols not used for transmitting transport blocks on the time slot includes the number of symbols corresponding to the PSFCH.
  • the number of symbols corresponding to PSFCH is greater than or equal to K and less than or equal to K+2, and K is the number of symbols occupied by PSFCH transmission.
  • the embodiment of the present application does not limit the value of K.
  • the value of K is configured by signaling or predefined.
  • S310 specifically includes: determining the number of symbols in the time slot that are not used for transmitting transport blocks according to the fourth information.
  • the fourth information is used to indicate at least one of the following: sending or receiving the PSFCH; whether the PSFCH is frequency division multiplexed; and the broadcast type of the PSFCH.
  • the fourth information includes at least one of the following: a fifth field, a sixth field, and a seventh field.
  • the fifth one is used to indicate sending or receiving PSFCH.
  • the sixth field is used to indicate whether the PSFCH is frequency division multiplexed.
  • the seventh field is used to indicate the broadcast type of PSFCH.
  • the fifth field may use 1 bit to indicate transmitting or receiving the PSFCH. If the fifth field indicates 0, it can be considered that the PSFCH is sent; if the fifth field indicates 1, it can be considered that the PSFCH is received.
  • the sixth field may use 1 bit to indicate whether the PSFCH is frequency division multiplexed. If the sixth field indicates 0, it can be considered that the PSFCH is not frequency division multiplexed; if the sixth field indicates 1, it can be considered that the PSFCH is frequency division multiplexed.
  • the seventh field may use 1 bit to indicate the broadcast type of the PSFCH. If the seventh field indicates 0, the broadcast type of PSFCH can be considered to be unicast; if the seventh field indicates 1, the broadcast type of PSFCH can be considered to be multicast.
  • the fourth information indicates sending PSFCH and PSFCH frequency division multiplexing, or if the third information indicates sending PSFCH and the broadcast type of PSFCH is multicast, then the number of symbols not used for sending transport blocks in the time slot is added to (K+1) .
  • K is added to the number of symbols not used for sending transport blocks in the time slot.
  • S310 specifically includes: determining the number of symbols in the time slot that are not used for transmitting transport blocks according to the fifth information.
  • the fifth information is used to indicate the number of symbols not occupied by the transport block among the symbols corresponding to the PSFCH.
  • the fifth information includes an eighth field, which is used to indicate the number of symbols not occupied by the transport block among the symbols corresponding to the PSFCH.
  • the eighth field may use 1 bit to indicate the number of symbols not occupied by the transport block in the symbols corresponding to the PSFCH.
  • Table 8 shows an example in which the eighth field uses 1 bit to indicate the number of symbols not occupied by the transport block in the symbols corresponding to the PSFCH.
  • the eighth field may use 2 bits to indicate the number of symbols that are not used for transmitting the transport block among the number of symbols corresponding to the PSFCH.
  • Table 9 shows an example of the eighth field using 2 bits to indicate the number of symbols not occupied by the transport block in the symbols corresponding to the PSFCH.
  • S310 specifically includes: determining the number of symbols on the time slot that are not used for transmitting transport blocks based on the fourth information and the fifth information.
  • the fourth information is used to indicate at least one of the following: sending or receiving the PSFCH; whether the PSFCH is frequency division multiplexed; and the broadcast type of the PSFCH.
  • the fifth information is used to indicate the number of symbols not occupied by the transport block among the symbols corresponding to the PSFCH.
  • the number of symbols not used for transmitting transport blocks on the time slot is determined according to the fourth information and the fifth information. It can be understood that the fourth information and the fifth information jointly indicate the number of symbols not occupied by the transport block among the symbols corresponding to the PSFCH. .
  • the fourth information includes a ninth field, the ninth field is used to indicate at least one of the following: sending or receiving PSFCH; PSFCH Whether frequency division multiplexing; broadcast type of PSFCH.
  • the fifth information includes an eighth field, which is used to indicate the number of symbols not occupied by the transport block among the symbols corresponding to the PSFCH.
  • the ninth field and the eighth field jointly indicate the number of symbols not occupied by the transport block among the symbols corresponding to the PSFCH on the time slot.
  • the ninth field may use 1 bit to indicate at least one of the following: sending or receiving PSFCH; whether PSFCH is frequency division multiplexed; and the broadcast type of PSFCH.
  • the eighth field may use 1 bit to indicate the number of symbols not occupied by the transport block among the symbols corresponding to the PSFCH on the time slot.
  • Table 10 shows an example of the ninth field and the eighth field jointly indicating the number of symbols not occupied by the transport block among the symbols corresponding to the PSFCH on the time slot.
  • the number of symbols on the time slot that are not used for transmitting transport blocks includes the number of symbols on the time slot corresponding to the PSFCH, and the number of symbols in the first symbol and/or the last symbol that are not used for transmitting transport blocks.
  • Method A3 S310 specifically includes: determining the number of symbols on the time slot that are not used for transmitting transport blocks based on the first information, the second information, and the fourth information.
  • the first information and the second information may refer to the relevant description in case 1' above, and the fourth information may refer to the relevant description in case 2' above, which will not be described again here.
  • the number of symbols described in S310 is an integer greater than or equal to 0 and less than or equal to 5, which can be replaced by: the number of symbols is greater than or equal to 0 and less than or equal to 5. Equal to 4+K.
  • this S310 specifically includes: determining the number of symbols in the time slot that are not used for transmitting transport blocks according to the sixth information.
  • the sixth information is used to indicate the number of symbols corresponding to the PSFCH on the time slot and the number of symbols in the first symbol and/or the last symbol that are not used for transmitting the transport block.
  • the sixth information includes a tenth field, which is used to indicate the number of symbols corresponding to the PSFCH on the time slot and the number of symbols in the first symbol and/or the last symbol that are not used for transmitting the transport block.
  • the tenth field may use 2 bits to indicate the number of symbols corresponding to the PSFCH on the time slot, and the number of symbols in the first symbol and/or the last symbol that are not used for transmitting the transport block.
  • Tables 11 to 13 respectively show three examples.
  • the tenth field can use 2 bits to indicate the number of symbols corresponding to the PSFCH on the time slot, and the number of symbols in the first symbol and/or the last symbol that are not used to send the transport block. number of symbols.
  • the tenth field may use 3 bits to indicate the number of symbols corresponding to the PSFCH on the time slot, and the number of symbols in the first symbol and/or the last symbol that are not used for transmitting the transport block.
  • Table 14 shows an example that the tenth field may use 3 bits to indicate the number of symbols corresponding to the PSFCH on the time slot, and the number of symbols in the first symbol and/or the last symbol that are not used to transmit the transport block.
  • Method C3 S310 specifically includes: determining the number of symbols on the time slot that are not used for transmitting transport blocks based on at least one of the sixth information and the first information, the second information, and the fourth information.
  • the first information and the second information can refer to the relevant description in the above situation 1'
  • the fourth information can refer to the relevant description in the above situation 2'
  • the sixth information can refer to the relevant description in the above method B3, here No longer.
  • the number of symbols is determined based on the sixth information and at least one of the first information, the second information, and the fourth information. It can be understood that the fourth information and the fifth information jointly indicate that the transport block in the symbol corresponding to the PSFCH is not Number of symbols occupied.
  • the sixth information includes a tenth field, which is used to indicate the number of symbols corresponding to the PSFCH on the time slot and the number of symbols in the first symbol and/or the last symbol that are not used for transmitting the transport block.
  • the tenth field may use 1 bit to indicate the number of symbols corresponding to the PSFCH on the time slot, and the number of symbols in the first symbol and/or the last symbol that are not used for transmitting the transport block.
  • the second field included in the first information may use 1 bit to indicate whether there is a signal transmitted by the CPE before the first symbol of the time slot.
  • the third field included in the second information may use 1 bit to indicate whether to transmit continuously in the time domain.
  • Table 15 shows an example of the tenth field, the second field, and the third field jointly indicating the number of symbols corresponding to the PSFCH on the time slot, and the number of symbols in the first symbol and/or the last symbol that are not used to transmit the transport block. number of symbols.
  • the tenth field may use 2 bits to indicate the number of symbols corresponding to the PSFCH on the time slot, and the number of symbols in the first symbol and/or the last symbol that are not used to transmit the transport block.
  • the fifth field included in the fourth information may use 1 bit to indicate sending or receiving the PSFCH.
  • the sixth field included in the fourth information may use 1 bit to indicate whether the PSFCH is frequency division multiplexed.
  • Table 16 shows an example of the tenth field, the second field, and the third field jointly indicating the number of symbols corresponding to the PSFCH on the time slot, and the number of symbols in the first symbol and/or the last symbol that are not used to transmit the transport block. number of symbols.
  • S320 The first communication device sends the first indication information to the second communication device.
  • the second communication device receives the first indication information sent by the first communication device.
  • the first indication information is used to indicate the number of symbols.
  • the number of symbols on the time slot that are not used for transmitting the transport block includes the number of symbols in the first symbol and/or the last symbol on the time slot that are not used for the transport block.
  • the first indication information includes a first field, and the first field indicates the number of symbols in the first symbol and/or the last symbol on the time slot that are not used for transmitting the transport block.
  • the first field may use 1 bit to indicate the number of symbols in the first symbol and/or the last symbol that are not used to send the transport block.
  • Table 17 and Table 18 show two examples where the first field uses 1 bit to indicate the number of symbols in the first symbol and/or the last symbol that are not used to send the transport block.
  • the first field may use 2 bits to indicate the number of symbols in the first symbol and/or the last symbol that are not used to send the transport block.
  • Table 19 shows an example where the first field uses 2 bits to indicate the number of symbols in the first symbol and/or the last symbol that are not used to transmit the transport block.
  • the number of symbols not used for transmitting transport blocks on the time slot includes the number of symbols corresponding to the PSFCH.
  • the first indication information includes a first field, and the first field indicates the number of symbols that are not used for transmitting the transport block among the number of symbols corresponding to the PSFCH on the time slot.
  • the first field may use 1 bit to indicate the number of symbols that are not used for transmitting the transport block among the number of symbols corresponding to the PSFCH.
  • Table 20 shows an example in which the first field uses 1 bit to indicate the number of symbols that are not used for transmitting transport blocks among the number of symbols corresponding to the PSFCH.
  • the first field may use 2 bits to indicate the number of symbols that are not used for transmitting the transport block among the number of symbols corresponding to the PSFCH.
  • Table 21 shows an example in which the first field uses 2 bits to indicate the number of symbols that are not used for transmitting transport blocks among the number of symbols corresponding to the PSFCH.
  • the number of symbols on the time slot that are not used for transmitting transport blocks includes the number of symbols corresponding to the physical sidelink feedback control channel PSFCH and the first symbol and/or the last symbol on the time slot.
  • the first indication information directly indicates the number of symbols on the time slot that are not used to send transport blocks.
  • the first indication information includes a first field, and the first field indicates the first symbol, the symbol corresponding to the PSFCH, and the number of symbols in the last symbol that are not used for transmitting the transport block.
  • the first field may use 2 bits to indicate the first symbol, the symbol corresponding to the PSFCH, and the number of symbols in the last symbol that are not used for transmitting the transport block.
  • Table 22 to Table 23 show three examples in which the first field uses 2 bits to indicate the first symbol, the symbol corresponding to the PSFCH, and the number of symbols in the last symbol that are not used to transmit the transport block.
  • the first field may use 3 bits to indicate the first symbol, the symbol corresponding to the PSFCH, and the number of symbols in the last symbol that are not used to transmit the transport block.
  • Table 25 shows an example of the first field using 3 bits to indicate the number of symbols in the first symbol, the symbol corresponding to the PSFCH, and the last symbol that are not used for transmitting the transport block.
  • the first indication information separately indicates the number of symbols in the first and last symbols that are not used to send the transport block, and the number of symbols in the symbols corresponding to the PSFCH that are not used to send the transport block.
  • the first indication information includes seventh information and eighth information, where the seventh information is used to indicate the number of symbols in the first symbol and the last symbol on the time slot that are not used to send the transport block.
  • the eighth information is used to indicate the number of symbols among the symbols corresponding to the PSFCH that are not used for transmitting transport blocks.
  • the seventh information includes an eleventh field, which is used to indicate the number of symbols in the first symbol and the last symbol on the time slot that are not used for transmitting the transport block.
  • the eleventh field may use 1 bit to indicate the number of symbols in the first symbol and the last symbol that are not used to send the transport block.
  • Table 26 and Table 27 show two examples of the eleventh field using 1 bit to indicate the number of symbols in the first symbol and the last symbol that are not used to transmit the transport block.
  • the eleventh field may use 2 bits to indicate the number of symbols in the first symbol and the last symbol that are not used to transmit the transport block.
  • Table 28 shows two examples. The eleventh field uses 2 bits to indicate the number of symbols in the first symbol and the last symbol that are not used to send the transport block.
  • the eighth information includes a twelfth field, which is used to indicate the number of symbols among the symbols corresponding to the PSFCH that are not used for transmitting the transport block.
  • the eleventh field may use 1 bit to indicate the number of symbols among the symbols corresponding to the PSFCH that are not used for transmitting the transport block.
  • Table 29 shows an example of the eleventh field using 1 bit to indicate the number of symbols among the symbols corresponding to the PSFCH that are not used for transmitting transport blocks.
  • the eleventh field may use 2 bits to indicate the number of symbols among the symbols corresponding to the PSFCH that are not used for transmitting the transport block.
  • Table 30 shows an example that the eleventh field uses 2 bits to indicate the number of symbols among the symbols corresponding to the PSFCH that are not used for transmitting transport blocks.
  • the first indication information separately indicates whether the first symbol is a symbol not used to send a transport block, the number of symbols in the symbols corresponding to the PSFCH that is not used to send a transport block, and whether the last symbol is a symbol not used to send a transport block.
  • the first indication information includes ninth information, tenth information, and eighth information, wherein the ninth information is used to indicate the number of symbols in the first symbol on the time slot that are not used for transmitting the transport block.
  • the tenth information is used to indicate the number of symbols in the last symbol on the time slot that are not used to send transport blocks.
  • the eighth information is used to indicate the number of symbols among the symbols corresponding to the PSFCH that are not used for transmitting transport blocks.
  • the ninth information includes a thirteenth field, which is used to indicate the number of symbols in the first symbol on the time slot that are not used for transmitting the transport block.
  • the thirteenth field may use 1 bit to indicate whether the first symbol on the slot is a number of symbols not used to send the transport block.
  • Table 31 shows an example where the thirteenth field uses 1 bit to indicate the number of symbols in the first symbol that are not used to transmit the transport block.
  • the tenth information includes a fourteenth field, which is used to indicate the number of symbols in the last symbol on the time slot that are not used for transmitting the transport block.
  • Table 33 shows an example where the fourteenth field uses 1 bit to indicate the number of symbols in the last symbol that are not used to transmit the transport block.
  • method 300 further includes S330 and S340.
  • S330 is executed after S310, and S340 is executed after S330.
  • This embodiment of the present application does not limit the execution order of S330 or S340 and S320.
  • the first communication device determines the number of subcarriers N RE allocated to the transmission channel according to the number of symbols.
  • what is transmitted on the transmission channel may be the above-mentioned transmission block.
  • the number of subcarriers may also be called RE.
  • the first communication device is based on Determine N RE . in, is the number of subcarriers in the physical resource block; is the number of symbols in the time slot; For the first and last symbols that are not used to send the transport block number, The value is 0, 1 or 2.
  • the first communication device also needs to obtain a high-level parameter (such as sl-X-Overhead) indicating the sidelink reference signal overhead (sidelink overhead).
  • a high-level parameter such as sl-X-Overhead
  • sidelink overhead sidelink overhead
  • the first communication device also needs to obtain the overhead of a demodulation reference signal (DMRS).
  • DMRS demodulation reference signal
  • the first communication device determines the N RE
  • the first communication device also needs to Remove DMRS overhead based on optionally, in, For DMRS overhead.
  • the first communication device also needs to obtain high-layer parameters (such as sl-X-Overhead) indicating the sidelink reference signal overhead (such as sl-X-Overhead) and DMRS overhead.
  • high-layer parameters such as sl-X-Overhead
  • sidelink reference signal overhead such as sl-X-Overhead
  • DMRS overhead e.g., DMRS overhead
  • the first communication device is based on Determine N RE . in, is the number of subcarriers in the physical resource block; is the number of symbols in the time slot; is the number of symbols in the first symbol and the last symbol that are not used to send the transport block, The value is 0, 1 or 2; is the number of symbols among the symbols corresponding to the PSFCH that are not used to send transport blocks.
  • the first communication device also needs to obtain a high-level parameter (such as sl-X-Overhead) indicating the sidelink reference signal overhead (sidelink overhead).
  • a high-level parameter such as sl-X-Overhead
  • sidelink overhead sidelink overhead
  • the first communication device determines the N RE
  • the first communication device also needs to On the basis of removing the overhead of high-level parameters (such as sl-X-Overhead).
  • sl-X-Overhead optionally, in, It is the overhead of high-level parameters (such as sl-X-Overhead).
  • the first communication device also needs to transmit DMRS.
  • the first communication device determines the N RE
  • the first communication device also needs to Remove DMRS overhead based on optionally, in, For DMRS overhead.
  • the first communication device also needs to obtain high-level parameters (such as sl-X-Overhead) indicating side-link reference signal overhead (side-link overhead) and DMRS.
  • high-level parameters such as sl-X-Overhead
  • side-link overhead side-link overhead
  • DMRS Downlink Reference Signal
  • the first communications device is configured according to Determine N RE . in, is the number of subcarriers in the physical resource block; is the number of symbols in the time slot; It is the number of symbols in the first symbol, the last symbol and the symbols corresponding to the PSFCH that are not used to send the transport block.
  • the first communication device also needs to obtain a high-level parameter (such as sl-X-Overhead) indicating the sidelink reference signal overhead (sidelink overhead).
  • a high-level parameter such as sl-X-Overhead
  • sidelink overhead sidelink overhead
  • the first communication device determines the N RE
  • the first communication device also needs to On the basis of removing the overhead of high-level parameters (such as sl-X-Overhead).
  • sl-X-Overhead optionally, in, It is the overhead of high-level parameters (such as sl-X-Overhead).
  • the first communication device also needs to transmit a demodulation reference signal (DMRS)
  • DMRS demodulation reference signal
  • the first communication device also needs to obtain high-level parameters (such as sl-X-Overhead) indicating the sidelink reference signal overhead (sidelink overhead) and DMRS when the first communication device determines the N RE , the first communication device Still need to be in On the basis of removing the overhead of high-level parameters (such as sl-X-Overhead) and the overhead of DMRS. optionally, in, For DMRS overhead.
  • high-level parameters such as sl-X-Overhead
  • sidelink overhead sidelink reference signal overhead
  • DMRS sidelink overhead
  • the first communication device Still need to be in On the basis of removing the overhead of high-level parameters (such as sl-X-Overhead) and the overhead of DMRS.
  • For DMRS overhead for DMRS overhead.
  • the first communication device determines the size of the transport block according to the N RE .
  • method 300 further includes S350, and S350 is executed after S340.
  • S350 The first communication device sends the transmission block to the second communication device. Accordingly, the second communication device receives the transport block sent by the first communication device.
  • the second communication device receives the transmission block sent by the first communication device according to the first indication information. Specifically, first, the second communication device first determines the number of subcarriers N RE allocated to the transmission channel according to the number of symbols indicated by the first indication information. Secondly, the second communication device determines the size of the transport block based on the N RE . Finally, the second communication device receives the transport block according to the size of the transport block.
  • the second communication device determines the number of subcarriers N RE allocated to the transmission channel based on the number of symbols.
  • the second communication device determines the number of subcarriers N RE allocated to the transmission channel based on the number of symbols.
  • the embodiment of the present application also provides another communication method 400.
  • the communication method includes S210, S220, S310, S330 to S350.
  • S310 specifically includes the first communication device determining the number of symbols on the time slot that are not used for transmitting the transport block based on the first symbol set determined in S210.
  • the second communication device determines the number of symbols based on the first indication information of the first communication device received in S220, and determines the number N RE of subcarriers allocated to the transmission channel based on the number of symbols. Secondly, the second communication device determines the size of the transport block based on the N RE . Finally, the second communication device receives the transport block according to the size of the transport block.
  • the second communication device determines the number of subcarriers N RE allocated to the transmission channel based on the number of symbols.
  • the first communication device determining the number N RE of subcarriers allocated to the transmission channel based on the number of symbols in method 300 above. I won’t go into details here.
  • Figure 39 is a schematic structural diagram of an example communication device 500 provided by an embodiment of the present application.
  • the communication device 500 includes a processing unit 510 and a transceiver unit 520 .
  • the processing unit 510 is used for data processing.
  • the transceiver unit 520 is used to communicate with the outside.
  • the transceiver unit 520 may also be called a communication interface or a communication unit.
  • the communication device 500 may also include a storage unit, which may be used to store instructions and/or data, and the processing unit 510 may read the instructions and/or data in the storage unit.
  • a storage unit which may be used to store instructions and/or data
  • the processing unit 510 may read the instructions and/or data in the storage unit.
  • the communication device 500 can be used to perform the actions performed by the first communication device in the above method embodiment.
  • the communication device 500 can be the first communication device or can be configured in the third communication device.
  • the processing unit 510 is used to perform operations related to processing of the first communication device in the above method embodiment
  • the transceiving unit 520 is used to perform operations related to transmitting and receiving of the first communication device in the above method embodiment.
  • the communication device 500 can be used to perform the actions performed by the second communication device in the above method embodiment.
  • the communication device 500 can be a second communication device or can be configured in As a component of the second communication device, the processing unit 510 is used to perform operations related to the processing of the second communication device in the above method embodiment, and the transceiving unit 520 is used to perform operations related to the processing of the second communication device in the above method embodiment. .
  • Figure 40 shows a schematic structural diagram of a communication device 600 provided by an embodiment of the present application.
  • the communication device 600 may be the first communication device or the second communication device described in the above embodiment.
  • the communication device 600 includes: one or more processors 610, one or more memories 620, the one or more memories 620 store one or more computer programs, the one or more computers Programs include instructions.
  • the communication device 600 is caused to execute the technical solution executed by the first communication device in the above embodiment or the device 600 is caused to execute the second communication device in the above embodiment.
  • Technical solutions implemented by communication equipment are not limited to: one or more processors 610, one or more memories 620, the one or more memories 620 store one or more computer programs, the one or more computers Programs include instructions.
  • the communication device 600 is caused to execute the technical solution executed by the first communication device in the above embodiment or the device 600 is caused to execute the second communication device in the above embodiment.
  • Technical solutions implemented by communication equipment are examples of communication equipment.
  • Embodiments of the present application provide a communication system, including a first communication device and a second communication device.
  • the system is used to implement the technical solutions in the above embodiments.
  • the implementation principles and technical effects are similar to the above-mentioned method-related embodiments, and will not be described again here.
  • Embodiments of the present application provide a computer program product.
  • the computer program product When the computer program product is run on a device, it causes the device to execute the technical solutions in the above embodiments.
  • the implementation principles and technical effects are similar to the above-mentioned method-related embodiments, and will not be described again here.
  • the device may include the first communication device or the second communication device described in the above embodiment.
  • Embodiments of the present application provide a computer-readable storage medium.
  • the computer-readable storage medium contains instructions. When the instructions are run on a device, they cause the device to execute the technical solutions of the above embodiments. The implementation principles and technical effects are similar and will not be described again here.
  • the device may include the first communication device or the second communication device described in the above embodiment.
  • Embodiments of the present application provide a chip.
  • the chip is used to execute instructions.
  • the technical solutions in the above embodiments are executed.
  • the implementation principles and technical effects are similar and will not be described again here.
  • the disclosed systems, devices and methods can be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined or can be integrated into another system, or some features can be ignored, or not implemented.
  • the coupling or direct coupling or communication connection between each other shown or discussed may be through some interfaces, and the indirect coupling or communication connection of the devices or units may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application can be integrated into one processing unit, each unit can exist physically alone, or two or more units can be integrated into one unit.
  • the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the present application is essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product.
  • the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of this application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program code. .

Abstract

本申请实施例提供了一种通信方法、通信装置及通信系统。该通信方法包括：确定第一符号集合，该第一符号集合为时隙中第一消息传输不占用的符号的集合，且该第一符号集合包括时隙中倒数第M个符号至倒数第二个符号中的至少一个符号，M为大于或等于2的整数；发送第一指示信息，该第一指示信息用于指示第一符号集合。这样，第一通信设备尽可能地利用倒数第M个符号至倒数第二个符号中能够传输第一消息的符号传输第一消息，进而可以提高第一消息传输的效率。

Description

通信方法及通信装置
本申请要求于2022年6月28日提交中国专利局、申请号为202210753260.0、申请名称为“一种PSSCH速率匹配指示方法”的中国专利申请的优先权，以及2022年8月11日提交中国专利局、申请号为202210963946.2、申请名称为“通信方法及通信装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请实施例涉及通信领域，更具体地，涉及一种通信方法及通信装置。
背景技术
在无线通信系统中，为了处理发射机和接收机在每个时隙上传输的信号波动比较大，通常在传输时隙开始的第一个符号用于做接收机的增益控制。同样地，为了支持时隙之间的收发转换，时隙的最后一个符号通常用于空符号。这样，时隙的第一个符号和最后一个符号都不传输数据和/或控制信息。此外，若一个时隙上还包括反馈信道，该反馈信道上也不能用于传输数据和/或控制信息。
这样，由于时隙的第一个符号、最后一个符号以及反馈信道不能用于传输数据和/或控制信息，造成数据和/或控制信息的传输效率较低。
发明内容
本申请实施例提供一种通信方法及通信装置，可以提高数据和/或控制信息传输的效率。
第一方面，提供了一种通信方法，该通信方法可以由第一通信设备执行，或者，也可以由用于第一通信设备的芯片或电路执行，本申请对此不作限定。
所述通信方法包括：确定第一符号集合，所述第一符号集合为时隙中第一消息传输不占用的符号的集合，所述第一符号集合包括所述时隙中倒数第M个符号至倒数第二个符号中的至少一个符号，所述M为大于或等于2的整数；发送第一指示信息，所述第一指示信息用于指示所述第一符号集合。
示例性地，所述第一消息包括所述第一通信设备发送的数据和/或控制信息。
通常时隙中倒数第M个符号至倒数第二个符号用于传输反馈信道、同步信号、控制信令等，故倒数第M个符号至倒数第二个符号不能用于传输第一消息。在本申请实施例中，可以根据业务的实际需求，动态地确定地哪些符号可以用于传输、以及哪些符号不用于传输，从而更好地匹配资源的实际使用情况，提升通信的性能。在本申请实施例中，第一通信设备从时隙的倒数第M个符号至倒数第二个符号中，确定至少一个符号，作为第一消息传输不占用的符号。这样，第一通信设备可以根据时隙中倒数第M个符号至倒数第二个符号的实际传输情况，尽可能地利用倒数第M个符号至倒数第二个符号中能够传输第一消息的符号传输第一消息，进而可以提高第一消息传输的效率。
结合第一方面，在第一方面的某些实现方式中，所述倒数第M个符号至倒数第二个符号包括与物理侧行链路反馈控制信道PSFCH对应的符号。
结合第一方面，在第一方面的某些实现方式中，所述第一指示信息包括第一信息、第二信息和第三信息，所述第一信息、所述第二信息和所述第三信息中的至少一项用于指示所述第一符号集合；其中，所述第一信息用于指示发送或接收所述PSFCH；所述第二信息用于指示所述PSFCH是否频分复用；所述第三信息用于指示所述PSFCH的播类型。
第一指示信息利用指示其他功能的信令，如第一信息、第二信息和第三信息中的至少一项，在指示其他功能的同时，还能够指示第一符号集合，进而能够减少指示信令的开销。
结合第一方面，在第一方面的某些实现方式中，所述第一信息用于指示接收所述PSFCH，所述第一符号集合包括所述PSFCH传输占用的符号之前的两个符号和所述PSFCH传输占用的符号，所述PSFCH传输占用的符号数为(M-3)，所述M大于或等于4。
结合第一方面，在第一方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH以及所述 第二信息用于指示所述PSFCH频分复用，或者，所述第一信息用于指示发送所述PSFCH以及所述第三信息用于指示所述PSFCH的播类型为组播，所述第一符号集合包括所述PSFCH传输占用的符号之前的一个符号和所述PSFCH传输占用的符号，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第一方面，在第一方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH以及所述第二信息用于指示所述PSFCH未频分复用，或者，所述第一信息用于指示发送所述PSFCH以及所述第三信息用于指示所述PSFCH的播类型为单播，所述第一符号集合包括所述PSFCH传输占用的符号，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第一方面，在第一方面的某些实现方式中，所述第一指示信息包括第一信息、第二信息、第三信息和第四信息，所述第一信息、所述第二信息和所述第三信息中的至少一项与所述第四信息用于指示所述第一符号集合；其中，所述第一信息用于指示发送或接收所述PSFCH；所述第二信息用于指示所述PSFCH是否频分复用；所述第三信息用于指示所述PSFCH的播类型。
第一指示信息通过第一信息、第二信息和第三信息中的至少一项与第四信息联合指示第一符号集合，这样，既能提升第一符号集合指示灵活度和效率，还能减少信令开销。
结合第一方面，在第一方面的某些实现方式中，所述第一符号集合包括所述PSFCH传输占用的符号之前的两个符号和所述PSFCH传输占用的符号，所述PSFCH传输占用的符号数为(M-3)，所述M大于或等于4。
结合第一方面，在第一方面的某些实现方式中，所述第一指示信息包括第一字段，所述第一字段指示所述第一个符号、所述倒数第M个符号至倒数第二个符号、以及所述最后一个符号中所述第一消息传输不占用的符号。
结合第一方面，在第一方面的某些实现方式中，所述第一信息用于指示接收所述PSFCH、以及所述第五信息用于指示所述时隙的第一个符号前存在CPE传输的信号，所述第一符号集合包括所述PSFCH传输占用的符号之前的两个符号和所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-3)，所述M大于或等于4。
结合第一方面，在第一方面的某些实现方式中，所述第一信息用于指示接收所述PSFCH、以及所述第六信息用于指示所述时隙在时域上连续传输，所述第一符号集合包括所述PSFCH传输占用的符号之前的两个符号和所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-3)，所述M大于或等于4。
结合第一方面，在第一方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第五信息用于指示所述时隙的第一个符号前不存在CPE传输的信号、以及所述第六信息用于指示所述时隙与后一个时隙在时域上连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号之前的两个符号、所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-3)，所述M大于或等于4。
结合第一方面，在第一方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第六信息用于指示所述时隙与前一个时隙在时域上非连续传输、以及所述第六信息用于指示所述时隙与后一个时隙在时域上连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号之前的两个符号、所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-3)，所述M大于或等于4。
结合第一方面，在第一方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、第五信息用于指示所述时隙的第一个符号前存在CPE传输的信号、所述第六信息用于指示所述时隙与后一个时隙在时域上非连续传输、以及所述第六信息用于指示所述时隙与前一个时隙在时域上连续传输，所述第一符号集合包括所述PSFCH传输占用的符号之前的两个符号、所述PSFCH传输占用的符号、以及所述最后一个符号，其中，所述PSFCH传输占用的符号数为(M-3)，所述M大于或等于4。
结合第一方面，在第一方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第五信息用于指示所述时隙的第一个符号前不存在CPE传输的信号、以及所述第六信息用于指示所述时隙在时域上非连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号之前的两个符号、所述PSFCH传输占用的符号、以及最后一个符号，其中，所述PSFCH传输占用的符号数为(M-3)，所述M大于或等于4。
结合第一方面，在第一方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、以及所述第六信息用于指示所述时隙在时域上非连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号之前的两个符号、所述PSFCH传输占用的符号、以及最后一个符号，其中，所述PSFCH传输占用的符号数为(M-3)，所述M大于或等于4。
结合第一方面，在第一方面的某些实现方式中，所述第一信息用于指示接收所述PSFCH、所述第二信息用于指示所述PSFCH频分复用、以及所述第五信息用于指示所述时隙的第一个符号前存在CPE传输的信号，所述第一符号集合包括所述PSFCH传输占用的符号之前的一个符号和所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第一方面，在第一方面的某些实现方式中，所述第一信息用于指示接收所述PSFCH、所述第二信息用于指示所述PSFCH频分复用、以及所述第六信息用于指示所述时隙在时域上连续传输，所述第一符号集合包括所述PSFCH传输占用的符号之前的一个符号和所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第一方面，在第一方面的某些实现方式中，所述第一信息用于指示接收所述PSFCH、所述第三信息用于指示所述PSFCH的播类型为组播、以及所述第五信息用于指示所述时隙的第一个符号前存在CPE传输的信号，所述第一符号集合包括所述PSFCH传输占用的符号之前的一个符号和所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第一方面，在第一方面的某些实现方式中，所述第一信息用于指示接收所述PSFCH、所述第三信息用于指示所述PSFCH的播类型为组播、以及所述第六信息用于指示所述时隙在时域上连续传输，所述第一符号集合包括所述PSFCH传输占用的符号之前的一个符号和所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第一方面，在第一方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第二信息用于指示所述PSFCH频分复用、所述第五信息用于指示所述时隙的第一个符号前不存在CPE传输的信号、以及所述第六信息用于指示所述时隙与所述时隙的后一个时隙在时域上连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号之前的一个符号、以及所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第一方面，在第一方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第二信息用于指示所述PSFCH频分复用、所述第六信息用于指示所述时隙与前一个时隙在时域上非连续传输、以及所述第六信息用于指示所述时隙与后一个时隙在时域上连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号之前的一个符号、以及所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第一方面，在第一方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第三信息用于指示所述PSFCH的播类型为组播、所述第五信息用于指示所述时隙的第一个符号前不存在CPE传输的信号、以及所述第六信息用于指示所述时隙与所述时隙的后一个时隙在时域上连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号之前的一个符号、以及所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第一方面，在第一方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第三信息用于指示所述PSFCH的播类型为组播、所述第六信息用于指示所述时隙与前一个时隙在时域上非连续传输、以及所述第六信息用于指示所述时隙与后一个时隙在时域上连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号之前的一个符号、以及所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第一方面，在第一方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第二信息用于指示所述PSFCH频分复用、第五信息用于指示所述时隙的第一个符号前存在CPE传输的信号、所述第六信息用于指示所述时隙与后一个时隙在时域上非连续传输、以及所述第六信息用于指示所述时隙与前一个时隙在时域上连续传输，所述第一符号集合包括所述PSFCH传输占用的符号之前的一个符号、所述PSFCH传输占用的符号、以及最后一个符号，其中，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第一方面，在第一方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第三信息用于指示所述PSFCH的播类型为组播、第五信息用于指示所述时隙的第一个符号前存在CPE 传输的信号、所述第六信息用于指示所述时隙与后一个时隙在时域上非连续传输、以及所述第六信息用于指示所述时隙与前一个时隙在时域上连续传输，所述第一符号集合包括所述PSFCH传输占用的符号之前的一个符号、所述PSFCH传输占用的符号、以及最后一个符号，其中，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第一方面，在第一方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第二信息用于指示所述PSFCH频分复用、所述第五信息用于指示所述时隙的第一个符号前不存在CPE传输的信号、以及所述第六信息用于指示所述时隙在时域上非连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号之前的一个符号、所述PSFCH传输占用的符号、以及最后一个符号，其中，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第一方面，在第一方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第二信息用于指示所述PSFCH频分复用、以及所述第六信息用于指示所述时隙在时域上非连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号之前的一个符号、所述PSFCH传输占用的符号、以及最后一个符号，其中，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第一方面，在第一方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第三信息用于指示所述PSFCH的播类型为组播、所述第五信息用于指示所述时隙的第一个符号前不存在CPE传输的信号、以及所述第六信息用于指示所述时隙在时域上非连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号之前的一个符号、所述PSFCH传输占用的符号、以及最后一个符号，其中，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第一方面，在第一方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第三信息用于指示所述PSFCH的播类型为组播、以及所述第六信息用于指示所述时隙在时域上非连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号之前的一个符号、所述PSFCH传输占用的符号、以及最后一个符号，其中，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第一方面，在第一方面的某些实现方式中，所述第一信息用于指示接收所述PSFCH、所述第二信息用于指示所述PSFCH未频分复用、以及所述第五信息用于指示所述时隙的第一个符号前存在CPE传输的信号，所述第一符号集合包括所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第一方面，在第一方面的某些实现方式中，所述第一信息用于指示接收所述PSFCH、所述第二信息用于指示所述PSFCH未频分复用、以及所述第六信息用于指示所述时隙在时域上连续传输，所述第一符号集合包括所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第一方面，在第一方面的某些实现方式中，所述第一信息用于指示接收所述PSFCH、所述第三信息用于指示所述PSFCH的播类型为单播、以及所述第五信息用于指示所述时隙的第一个符号前存在CPE传输的信号，所述第一符号集合包括所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第一方面，在第一方面的某些实现方式中，所述第一信息用于指示接收所述PSFCH、所述第三信息用于指示所述PSFCH的播类型为单播、以及所述第六信息用于指示所述时隙在时域上连续传输，所述第一符号集合包括所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第一方面，在第一方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第二信息用于指示所述PSFCH未频分复用、所述第五信息用于指示所述时隙的第一个符号前不存在CPE传输的信号、以及所述第六信息用于指示所述时隙与所述时隙的后一个时隙在时域上连续传输，所述第一符号集合包括所述第一个符号和所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第一方面，在第一方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第二信息用于指示所述PSFCH未频分复用、所述第六信息用于指示所述时隙与前一个时隙在时域上非连续传输、以及所述第六信息用于指示所述时隙与后一个时隙在时域上连续传输，所述第一符号集合包 括所述第一个符号和所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第一方面，在第一方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第三信息用于指示所述PSFCH的播类型为单播、所述第五信息用于指示所述时隙的第一个符号前不存在CPE传输的信号、以及所述第六信息用于指示所述时隙与后一个时隙在时域上连续传输，所述第一符号集合包括所述第一个符号和所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第一方面，在第一方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第三信息用于指示所述PSFCH的播类型为单播、所述第六信息用于指示所述时隙与前一个时隙在时域上非连续传输、以及所述第六信息用于指示所述时隙与后一个时隙在时域上连续传输，所述第一符号集合包括所述第一个符号和所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第一方面，在第一方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第二信息用于指示所述PSFCH未频分复用、第五信息用于指示所述时隙的第一个符号前存在CPE传输的信号、所述第六信息用于指示所述时隙与后一个时隙在时域上非连续传输、以及所述时隙与前一个时隙在时域上连续传输，所述第一符号集合包括所述PSFCH传输占用的符号和所述最后一个符号，其中，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第一方面，在第一方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第三信息用于指示所述PSFCH的播类型为单播、第五信息用于指示所述时隙的第一个符号前存在CPE传输的信号号、所述第六信息用于指示所述时隙与后一个时隙在时域上非连续传输、以及所述第六信息用于指示所述时隙与前一个时隙在时域上连续传输，所述第一符号集合包括所述PSFCH传输占用的符号和所述最后一个符号，其中，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第一方面，在第一方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第二信息用于指示所述PSFCH未频分复用、所述第五信息用于指示所述时隙的第一个符号前不存在CPE传输的信号、以及所述第六信息用于指示所述时隙在时域上非连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号、以及最后一个符号，其中，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第一方面，在第一方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第二信息用于指示所述PSFCH未频分复用、以及所述第六信息用于指示所述时隙在时域上非连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号、以及最后一个符号，其中，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第一方面，在第一方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第三信息用于指示所述PSFCH的播类型为单播、所述第五信息用于指示所述时隙的第一个符号前不存在CPE传输的信号、以及所述第六信息用于指示所述时隙在时域上非连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号、以及最后一个符号，其中，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第一方面，在第一方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第三信息用于指示所述PSFCH的播类型为单播、以及所述第六信息用于指示所述时隙在时域上非连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号、以及最后一个符号，其中，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第一方面，在第一方面的某些实现方式中，在所述PSFCH传输占用的符号数为(M-3)的情况下，所述PSFCH传输占用的符号为所述时隙的倒数第(M-2)至倒数第二个符号。
结合第一方面，在第一方面的某些实现方式中，所述第一符号集合包括所述PSFCH传输占用的符号之前的一个符号和所述PSFCH传输占用的符号，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第一方面，在第一方面的某些实现方式中，在所述PSFCH传输占用的符号数为(M-2)的情况下，所述PSFCH传输占用的符号为所述时隙的倒数第(M-1)至倒数第二个符号。
结合第一方面，在第一方面的某些实现方式中，所述第一符号集合包括所述PSFCH传输占用的符 号，所述PSFCH传输占用的符号数为所述(M-1)，所述M大于或等于2。
结合第一方面，在第一方面的某些实现方式中，所述PSFCH传输占用的符号数为(M-1)的情况下，所述PSFCH传输占用的符号为所述时隙的倒数第M个符号至倒数第二个符号。
结合第一方面，在第一方面的某些实现方式中，所述第一符号集合还包括所述时隙的第一个符号和/或最后一个符号。
第一通信设备从时隙的第一个符号和/或最后一个符号中，确定可作为第一消息传输不占用的符号。这样，第一通信设备可以根据时隙中第一个符号和/或最后一个符号的实际传输情况，尽可能地利用第一个符号和/或最后一个符号中能够传输第一消息的符号传输第一消息，进而可以提高第一消息传输的正确率，从而提升传输效率。
结合第一方面，在第一方面的某些实现方式中，所述第一指示信息包括第一信息、第二信息、第三信息、第五信息和第六信息，所述第五信息或所述第六信息、与所述第一信息、所述第二信息和所述第三信息中的至少一项用于指示所述第一符号集合；其中，所述第一信息用于指示发送或接收所述PSFCH；所述第二信息用于指示所述PSFCH是否频分复用；所述第三信息用于指示所述PSFCH的播类型；所述第五信息用于指示所述时隙的第一个符号前是否存在循环前缀扩展CPE传输的信号；所述第六信息用于指示所述时隙在时域上是否连续传输。
第一指示信息利用指示其他功能的信令，如第五信息或第六信息、与第一信息、第二信息和第三信息中的至少一项联合指示第一符号集合，这样，既能提升第一符号集合指示灵活度和效率，还能减少信令开销。
结合第一方面，在第一方面的某些实现方式中，所述第一指示信息包括第一信息、第二信息、第三信息、第五信息、第六信息、和第七信息，所述第七信息与所述第一信息、所述第二信息、所述第三信息、所述第五信息和所述第六信息中的至少一项用于指示所述第一符号集合；其中，所述第一信息用于指示发送或接收所述PSFCH；所述第二信息用于指示所述PSFCH是否频分复用；所述第三信息用于指示所述PSFCH的播类型；所述第五信息用于指示所述时隙的第一个符号前是否存在循环前缀扩展CPE传输的信号；所述第六信息用于指示所述时隙在时域上是否连续传输。
第一指示信息通过第七信息与第一信息、第二信息、第三信息、第五信息和第六信息中的至少一项联合指示第一符号集合，这样，既能提升第一符号集合指示灵活度和效率，还能减少信令开销。
结合第一方面，在第一方面的某些实现方式中，所述第一指示信息包括第八信息，所述第一指示信息还包括第九信息和/或第十信息；其中，所述第八信息用于指示所述倒数第M个符号至倒数第二个符号中所述第一消息传输不占用的符号；所述第九信息用于指示所述第一个符号是否是所述第一消息传输不占用的符号；所述第十信息用于指示所述最后一个符号是否是所述第一消息传输不占用的符号。
结合第一方面，在第一方面的某些实现方式中，所述第九信息用于指示所述时隙的第一个符号前是否存在CPE传输的信号或所述时隙在时域上是否连续传输。
第一指示信息利用指示其他功能的信令，如第九信息，在指示其他功能的同时，还能够指示第一个符号是否是第一消息传输不占用的符号，进而能够减少指示信令的开销。
结合第一方面，在第一方面的某些实现方式中，所述第九信息用于指示所述时隙的第一个符号前不存在CPE传输的信号，所述第一符号集合包括所述第一个符号，或者，所述第九信息用于指示所述时隙在时域上非连续传输，所述第一符号集合包括所述第一个符号。
结合第一方面，在第一方面的某些实现方式中，所述第十信息用于指示所述时隙在时域上是否连续传输。
第一指示信息利用指示其他功能的信令，如第十信息，在指示其他功能的同时，还能够指示最后一个符号是否是第一消息传输不占用的符号，进而能够减少指示信令的开销。
结合第一方面，在第一方面的某些实现方式中，所述第十信息用于指示所述时隙在时域上非连续传输，所述第一符号集合包括所述最后一个符号。
结合第一方面，在第一方面的某些实现方式中，所述第八信息包括第一信息、第二信息和第三信息，所述第一信息、所述第二信息和所述第三信息中的至少一项用于指示所述倒数第M个符号至倒数第二个符号中所述第一消息传输不占用的符号；其中，所述第一信息用于指示发送或接收所述PSFCH；所述第二信息用于指示所述PSFCH是否频分复用；所述第三信息用于指示所述PSFCH的播类型。
第一指示信息利用指示其他功能的信令，如第八信息中的第一信息、第二信息和第三信息中的至 少一项，在指示其他功能的同时，还能够指示倒数第M个符号至倒数第二个符号中第一消息传输不占用的符号，进而能够减少指示信令的开销。
结合第一方面，在第一方面的某些实现方式中，所述第一信息用于指示接收所述PSFCH，所述第一符号集合包括所述PSFCH传输占用的符号之前的两个符号和所述PSFCH传输占用的符号，所述PSFCH传输占用的符号数为(M-3)，所述M大于或等于4；或者，所述第一信息用于指示发送所述PSFCH以及所述第二信息用于指示所述PSFCH频分复用，或者，所述第一信息用于指示发送所述PSFCH以及所述第三信息用于指示所述PSFCH的播类型为组播，所述第一符号集合包括所述PSFCH传输占用的符号之前的一个符号和所述PSFCH传输占用的符号，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3；或者，所述第一信息用于指示发送所述PSFCH以及所述第二信息用于指示所述PSFCH未频分复用，或者，所述第一信息用于指示发送所述PSFCH以及所述第三信息用于指示所述PSFCH的播类型为单播，所述第一符号集合包括所述PSFCH传输占用的符号，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第一方面，在第一方面的某些实现方式中，所述第八信息包括第一信息、第二信息、第三信息和第四信息，所述第四信息与所述第一信息、所述第二信息或所述第三信息中的至少一项用于指示所述倒数第M个符号至倒数第二个符号中所述第一消息传输不占用的符号；其中，所述第一信息用于指示发送或接收所述PSFCH；所述第二信息用于指示所述PSFCH是否频分复用；所述第三信息用于指示所述PSFCH的播类型。
结合第一方面，在第一方面的某些实现方式中，所述PSFCH传输占用的符号数为信令配置的或预定义的。
结合第一方面，在第一方面的某些实现方式中，所述M的取值为信令配置的或预定义的。
结合第一方面，在第一方面的某些实现方式中，所述时隙的符号数为S，所述S为整数，且所述6≤S≤14。
结合第一方面，在第一方面的某些实现方式中，所述通信方法还包括：根据所述第一符号集合和所述时隙占用的符号，发送所述第一消息。
结合第一方面，在第一方面的某些实现方式中，所述通信方法还包括：根据所述第一符号集合，确定时隙上不用于发送传输块的符号数，所述符号数用于确定所述传输块的大小，所述符号数为大于或等于0，且小于或等于5的整数；所述第一指示信息还用于指示所述符号数。
第二方面，提供了一种通信方法，该通信方法可以由第二通信设备执行，或者，也可以由用于第二通信设备的芯片或电路执行，本申请对此不作限定。
所述通信方法包括：接收第一指示信息，所述第一指示信息用于指示第一符号集合，所述第一符号集合为时隙中第一消息传输不占用的符号的集合，所述第一符号集合包括所述时隙中倒数第M个符号至倒数第二个符号中的至少一个符号，所述M为大于或等于2的整数；根据所述第一指示信息，接收所述第一消息。
结合第二方面，在第二方面的某些实现方式中，所述通信方法还包括：根据所述第一符号集合，对所述第一消息进行解码。
结合第二方面，在第二方面的某些实现方式中，所述倒数第M个符号至倒数第二个符号包括与物理侧行链路反馈控制信道PSFCH对应的符号。
结合第二方面，在第二方面的某些实现方式中，所述第一指示信息包括第一信息、第二信息和第三信息，所述第一信息、所述第二信息和所述第三信息中的至少一项用于指示所述第一符号集合；其中，所述第一信息用于指示发送或接收所述PSFCH；所述第二信息用于指示所述PSFCH是否频分复用；所述第三信息用于指示所述PSFCH的播类型。
结合第二方面，在第二方面的某些实现方式中，所述第一信息用于指示接收所述PSFCH，所述第一符号集合包括所述PSFCH传输占用的符号之前的两个符号和所述PSFCH传输占用的符号，所述PSFCH传输占用的符号数为(M-3)，所述M大于或等于4；或者，所述第一信息用于指示发送所述PSFCH以及所述第二信息用于指示所述PSFCH频分复用，或者，所述第一信息用于指示发送所述PSFCH以及所述第三信息用于指示所述PSFCH的播类型为组播，所述第一符号集合包括所述PSFCH传输占用的符号之前的一个符号和所述PSFCH传输占用的符号，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3；或者，所述第一信息用于指示发送所述PSFCH以及所述第二信息用于指示所述PSFCH 未频分复用，或者，所述第一信息用于指示发送所述PSFCH以及所述第三信息用于指示所述PSFCH的播类型为单播，所述第一符号集合包括所述PSFCH传输占用的符号，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第二方面，在第二方面的某些实现方式中，所述第一指示信息包括第一信息、第二信息、第三信息和第四信息，所述第一信息、所述第二信息和所述第三信息中的至少一项与所述第四信息用于指示所述第一符号集合；其中，所述第一信息用于指示发送或接收所述PSFCH；所述第二信息用于指示所述PSFCH是否频分复用；所述第三信息用于指示所述PSFCH的播类型。
结合第二方面，在第二方面的某些实现方式中，所述第一符号集合还包括所述时隙的第一个符号和/或最后一个符号。
结合第二方面，在第二方面的某些实现方式中，所述第一指示信息包括第一字段，所述第一字段指示所述第一个符号、所述倒数第M个符号至倒数第二个符号、以所述及最后一个符号中所述第一消息传输不占用的符号。
结合第二方面，在第二方面的某些实现方式中，所述第一指示信息包括第一信息、第二信息、第三信息、第五信息和第六信息，所述第五信息或所述第六信息、与所述第一信息、所述第二信息和所述第三信息中的至少一项用于指示所述第一符号集合；其中，所述第一信息用于指示发送或接收所述PSFCH；所述第二信息用于指示所述PSFCH是否频分复用；所述第三信息用于指示所述PSFCH的播类型；所述第五信息用于指示所述时隙的第一个符号前是否存在循环前缀扩展CPE传输的信号；所述第六信息用于指示所述时隙在时域上是否连续传输。
结合第二方面，在第二方面的某些实现方式中，所述第一信息用于指示接收所述PSFCH、以及所述第五信息用于指示所述时隙的第一个符号前存在CPE传输的信号，所述第一符号集合包括所述PSFCH传输占用的符号之前的两个符号和所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-3)，所述M大于或等于4。
结合第二方面，在第二方面的某些实现方式中，所述第一信息用于指示接收所述PSFCH、以及所述第六信息用于指示所述时隙在时域上连续传输，所述第一符号集合包括所述PSFCH传输占用的符号之前的两个符号和所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-3)，所述M大于或等于4。
结合第二方面，在第二方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第五信息用于指示所述时隙的第一个符号前不存在CPE传输的信号、以及所述第六信息用于指示所述时隙与后一个时隙在时域上连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号之前的两个符号、所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-3)，所述M大于或等于4。
结合第二方面，在第二方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第六信息用于指示所述时隙与前一个时隙在时域上非连续传输、以及所述第六信息用于指示所述时隙与后一个时隙在时域上连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号之前的两个符号、所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-3)，所述M大于或等于4。
结合第二方面，在第二方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、第五信息用于指示所述时隙的第一个符号前存在CPE传输的信号、所述第六信息用于指示所述时隙与后一个时隙在时域上非连续传输、以及所述第六信息用于指示所述时隙与前一个时隙在时域上连续传输，所述第一符号集合包括所述PSFCH传输占用的符号之前的两个符号、所述PSFCH传输占用的符号、以及所述最后一个符号，其中，所述PSFCH传输占用的符号数为(M-3)，所述M大于或等于4。
结合第二方面，在第二方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第五信息用于指示所述时隙的第一个符号前不存在CPE传输的信号、以及所述第六信息用于指示所述时隙在时域上非连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号之前的两个符号、所述PSFCH传输占用的符号、以及最后一个符号，其中，所述PSFCH传输占用的符号数为(M-3)，所述M大于或等于4。
结合第二方面，在第二方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、以及所述第六信息用于指示所述时隙在时域上非连续传输，所述第一符号集合包括所述第一个符号、所述 PSFCH传输占用的符号之前的两个符号、所述PSFCH传输占用的符号、以及最后一个符号，其中，所述PSFCH传输占用的符号数为(M-3)，所述M大于或等于4。
结合第二方面，在第二方面的某些实现方式中，所述第一信息用于指示接收所述PSFCH、所述第二信息用于指示所述PSFCH频分复用、以及所述第五信息用于指示所述时隙的第一个符号前存在CPE传输的信号，所述第一符号集合包括所述PSFCH传输占用的符号之前的一个符号和所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第二方面，在第二方面的某些实现方式中，所述第一信息用于指示接收所述PSFCH、所述第二信息用于指示所述PSFCH频分复用、以及所述第六信息用于指示所述时隙在时域上连续传输，所述第一符号集合包括所述PSFCH传输占用的符号之前的一个符号和所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第二方面，在第二方面的某些实现方式中，所述第一信息用于指示接收所述PSFCH、所述第三信息用于指示所述PSFCH的播类型为组播、以及所述第五信息用于指示所述时隙的第一个符号前存在CPE传输的信号，所述第一符号集合包括所述PSFCH传输占用的符号之前的一个符号和所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第二方面，在第二方面的某些实现方式中，所述第一信息用于指示接收所述PSFCH、所述第三信息用于指示所述PSFCH的播类型为组播、以及所述第六信息用于指示所述时隙在时域上连续传输，所述第一符号集合包括所述PSFCH传输占用的符号之前的一个符号和所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第二方面，在第二方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第二信息用于指示所述PSFCH频分复用、所述第五信息用于指示所述时隙的第一个符号前不存在CPE传输的信号、以及所述第六信息用于指示所述时隙与所述时隙的后一个时隙在时域上连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号之前的一个符号、以及所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第二方面，在第二方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第二信息用于指示所述PSFCH频分复用、所述第六信息用于指示所述时隙与前一个时隙在时域上非连续传输、以及所述第六信息用于指示所述时隙与后一个时隙在时域上连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号之前的一个符号、以及所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第二方面，在第二方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第三信息用于指示所述PSFCH的播类型为组播、所述第五信息用于指示所述时隙的第一个符号前不存在CPE传输的信号、以及所述第六信息用于指示所述时隙与所述时隙的后一个时隙在时域上连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号之前的一个符号、以及所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第二方面，在第二方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第三信息用于指示所述PSFCH的播类型为组播、所述第六信息用于指示所述时隙与前一个时隙在时域上非连续传输、以及所述第六信息用于指示所述时隙与后一个时隙在时域上连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号之前的一个符号、以及所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第二方面，在第二方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第二信息用于指示所述PSFCH频分复用、第五信息用于指示所述时隙的第一个符号前存在CPE传输的信号、所述第六信息用于指示所述时隙与后一个时隙在时域上非连续传输、以及所述第六信息用于指示所述时隙与前一个时隙在时域上连续传输，所述第一符号集合包括所述PSFCH传输占用的符号之前的一个符号、所述PSFCH传输占用的符号、以及最后一个符号，其中，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第二方面，在第二方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第三信息用于指示所述PSFCH的播类型为组播、第五信息用于指示所述时隙的第一个符号前存在CPE传输的信号、所述第六信息用于指示所述时隙与后一个时隙在时域上非连续传输、以及所述第六信息用于指示所述时隙与前一个时隙在时域上连续传输，所述第一符号集合包括所述PSFCH传输占用的符 号之前的一个符号、所述PSFCH传输占用的符号、以及最后一个符号，其中，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第二方面，在第二方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第二信息用于指示所述PSFCH频分复用、所述第五信息用于指示所述时隙的第一个符号前不存在CPE传输的信号、以及所述第六信息用于指示所述时隙在时域上非连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号之前的一个符号、所述PSFCH传输占用的符号、以及最后一个符号，其中，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第二方面，在第二方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第二信息用于指示所述PSFCH频分复用、以及所述第六信息用于指示所述时隙在时域上非连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号之前的一个符号、所述PSFCH传输占用的符号、以及最后一个符号，其中，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第二方面，在第二方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第三信息用于指示所述PSFCH的播类型为组播、所述第五信息用于指示所述时隙的第一个符号前不存在CPE传输的信号、以及所述第六信息用于指示所述时隙在时域上非连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号之前的一个符号、所述PSFCH传输占用的符号、以及最后一个符号，其中，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第二方面，在第二方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第三信息用于指示所述PSFCH的播类型为组播、以及所述第六信息用于指示所述时隙在时域上非连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号之前的一个符号、所述PSFCH传输占用的符号、以及最后一个符号，其中，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第二方面，在第二方面的某些实现方式中，所述第一信息用于指示接收所述PSFCH、所述第二信息用于指示所述PSFCH未频分复用、以及所述第五信息用于指示所述时隙的第一个符号前存在CPE传输的信号，所述第一符号集合包括所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第二方面，在第二方面的某些实现方式中，所述第一信息用于指示接收所述PSFCH、所述第二信息用于指示所述PSFCH未频分复用、以及所述第六信息用于指示所述时隙在时域上连续传输，所述第一符号集合包括所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第二方面，在第二方面的某些实现方式中，所述第一信息用于指示接收所述PSFCH、所述第三信息用于指示所述PSFCH的播类型为单播、以及所述第五信息用于指示所述时隙的第一个符号前存在CPE传输的信号，所述第一符号集合包括所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第二方面，在第二方面的某些实现方式中，所述第一信息用于指示接收所述PSFCH、所述第三信息用于指示所述PSFCH的播类型为单播、以及所述第六信息用于指示所述时隙在时域上连续传输，所述第一符号集合包括所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第二方面，在第二方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第二信息用于指示所述PSFCH未频分复用、所述第五信息用于指示所述时隙的第一个符号前不存在CPE传输的信号、以及所述第六信息用于指示所述时隙与所述时隙的后一个时隙在时域上连续传输，所述第一符号集合包括所述第一个符号和所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第二方面，在第二方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第二信息用于指示所述PSFCH未频分复用、所述第六信息用于指示所述时隙与前一个时隙在时域上非连续传输、以及所述第六信息用于指示所述时隙与后一个时隙在时域上连续传输，所述第一符号集合包括所述第一个符号和所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第二方面，在第二方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第三信息用于指示所述PSFCH的播类型为单播、所述第五信息用于指示所述时隙的第一个符号前不存在CPE传输的信号、以及所述第六信息用于指示所述时隙与后一个时隙在时域上连续传输，所述第一符号集合包括所述第一个符号和所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第二方面，在第二方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第三信息用于指示所述PSFCH的播类型为单播、所述第六信息用于指示所述时隙与前一个时隙在时域上非连续传输、以及所述第六信息用于指示所述时隙与后一个时隙在时域上连续传输，所述第一符号集合包括所述第一个符号和所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第二方面，在第二方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第二信息用于指示所述PSFCH未频分复用、第五信息用于指示所述时隙的第一个符号前存在CPE传输的信号、所述第六信息用于指示所述时隙与后一个时隙在时域上非连续传输、以及所述时隙与前一个时隙在时域上连续传输，所述第一符号集合包括所述PSFCH传输占用的符号和所述最后一个符号，其中，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第二方面，在第二方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第三信息用于指示所述PSFCH的播类型为单播、第五信息用于指示所述时隙的第一个符号前存在CPE传输的信号号、所述第六信息用于指示所述时隙与后一个时隙在时域上非连续传输、以及所述第六信息用于指示所述时隙与前一个时隙在时域上连续传输，所述第一符号集合包括所述PSFCH传输占用的符号和所述最后一个符号，其中，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第二方面，在第二方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第二信息用于指示所述PSFCH未频分复用、所述第五信息用于指示所述时隙的第一个符号前不存在CPE传输的信号、以及所述第六信息用于指示所述时隙在时域上非连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号、以及最后一个符号，其中，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第二方面，在第二方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第二信息用于指示所述PSFCH未频分复用、以及所述第六信息用于指示所述时隙在时域上非连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号、以及最后一个符号，其中，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第二方面，在第二方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第三信息用于指示所述PSFCH的播类型为单播、所述第五信息用于指示所述时隙的第一个符号前不存在CPE传输的信号、以及所述第六信息用于指示所述时隙在时域上非连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号、以及最后一个符号，其中，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第二方面，在第二方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第三信息用于指示所述PSFCH的播类型为单播、以及所述第六信息用于指示所述时隙在时域上非连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号、以及最后一个符号，其中，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第二方面，在第二方面的某些实现方式中，所述第八信息包括第一信息、第二信息、第三信息和第四信息，所述第四信息与所述第一信息、所述第二信息或所述第三信息中的至少一项用于指示所述倒数第M个符号至倒数第二个符号中所述第一消息传输不占用的符号；其中，所述第一信息用于指示发送或接收所述PSFCH；所述第二信息用于指示所述PSFCH是否频分复用；所述第三信息用于指示所述PSFCH的播类型。
结合第二方面，在第二方面的某些实现方式中，所述M的取值为信令配置的或预定义的。
结合第二方面，在第二方面的某些实现方式中，所述时隙的符号数为S，所述S为整数，且所述6≤S≤14。
结合第二方面，在第二方面的某些实现方式中，所述第一消息包括所述第二通信设备接收的数据和/或控制信息。
第二方面及各个可能的实现方式的有益效果可以参考第一方面相关的描述，在此不予赘述。
第三方面，提供了一种通信方法，该通信方法可以由第一通信设备执行，或者，也可以由用于第一通信设备的芯片或电路执行，本申请对此不作限定。
所述通信方法包括：确定时隙上不用于发送传输块的符号数，所述符号数用于确定所述传输块的大小，所述符号数为大于或等于0，且小于或等于5的整数；发送第一指示信息，所述第一指示信息用于指示所述符号数。
第一通信设备确定时隙上不用于发送传输块的符号数，从而可以保证同一个数据包，在不同的时隙上的传输块大小相同。此外，第一通信设备将确定时隙上不用于发送传输块的符号数发送给接收端，可以确保接收端对不同时隙上传输时同一个TB的正确地合并译码。进而，提高传输块的传输正确率，从而提升传输的效率。
结合第三方面，在第三方面的某些实现方式中，所述通信方法还包括：根据所述符号数确定分配给传输信道的子载波数NRE；根据所述NRE确定所述传输块的大小。
结合第三方面，在第三方面的某些实现方式中，所述符号数包括所述时隙上第一个符号和/或最后一个符号中不用于发送所述传输块的符号数。
结合第三方面，在第三方面的某些实现方式中，所述第一指示信息包括第一字段，所述第一字段指示所述时隙上第一个符号和/或最后一个符号中不用于发送所述传输块的符号数。
结合第三方面，在第三方面的某些实现方式中，所述确定时隙上不用于发送传输块的符号数包括：根据第一信息和第二信息，确定所述时隙上不用于发送传输块的符号数；其中，所述第一信息用于指示所述时隙的第一个符号前是否存在循环前缀扩展CPE传输的信号；所述第二信息用于指示所述时隙在时域上是否连续传输。
第一通信设备能够根据时隙的第一个符号前是否存在循环前缀扩展CPE传输的信号和时隙在时域上是否连续传输，来确定时隙上的第一个符号和/或最后一个符号是否是不用于发送传输块的符号。这样，第一通信设备可以结合时隙的实际传输情况，尽可能地利用时隙上的第一个符号和/或最后一个符号中能够传输传输块的符号传输传输块，进而可以提高传输块传输的正确率和传输效率。
结合第三方面，在第三方面的某些实现方式中，所述确定时隙上不用于发送传输块的符号数包括：根据第一信息或第二信息、与第三信息，确定所述时隙上不用于发送传输块的符号数；其中，所述第一信息用于指示所述时隙的第一个符号前是否存在循环前缀扩展CPE传输的信号；所述第二信息用于指示所述时隙在时域上是否连续传输；所述第三信息用于指示所述第一个符号或所述最后一个符号是否是所述传输块不占用的符号。
结合第三方面，在第三方面的某些实现方式中，所述根据所述符号数确定分配给传输信道的子载波数NRE包括：根据确定所述NRE；其中，为物理资源块中的子载波数；为所述时隙的符号数；为所述第一个符号和所述最后一个符号中不用于发送所述传输块的符号数，所述的取值为0，1或2。
结合第三方面，在第三方面的某些实现方式中，所述时隙上不用于发送传输块的符号数还包括与物理侧行链路反馈控制信道PSFCH对应的符号数，其中，所述与PSFCH对应的符号数大于或等于K，且小于或等于K+2，所述K为所述PSFCH传输占用的符号数。
结合第三方面，在第三方面的某些实现方式中，所述第一指示信息包括第一字段，所述第一字段指示所述第一个符号、所述与PSFCH对应的符号、以及所述最后一个符号中不用于发送所述传输块的符号数。
结合第三方面，在第三方面的某些实现方式中，所述确定时隙上不用于发送传输块的符号数包括：根据第一信息、第二信息和第三信息，确定所述时隙上不用于发送传输块的符号数；其中，所述第一信息用于指示所述时隙的第一个符号前是否存在循环前缀扩展CPE传输的信号；所述第二信息用于指示所述时隙在时域上是否连续传输；所述第三信息用于指示以下至少一项：发送或接收所述PSFCH；所述PSFCH是否频分复用；所述PSFCH的播类型。
第一通信设备能够根据时隙的第一个符号前是否存在循环前缀扩展CPE传输的信号、时隙在时域上是否连续传输、以及以下至少一项：时隙上是发送或接收PSFCH、PSFCH是否频分复用、PSFCH 的播类型，来确定时隙上的第一个符号、PSFCH对应的符号数、以及最后一个符号是否存在不用于发送传输块的符号。这样，第一通信设备可以结合时隙的实际传输情况，尽可能地利用时隙上的第一个符号、PSFCH对应的符号数、以及最后一个符号中能够传输传输块的符号传输传输块，进而可以提高传输块传输的正确率以及传输的效率。
结合第三方面，在第三方面的某些实现方式中，所述根据所述符号数确定分配给传输信道的子载波数NRE包括：根据确定所述NRE；其中，为物理资源块中的子载波数；为所述时隙的符号数；为所述第一个符号和所述最后一个符号中不用于发送所述传输块的符号数，所述的取值为0，1或2；为所述与PSFCH对应的符号中不用于发送所述传输块的符号数。
结合第三方面，在第三方面的某些实现方式中，所述根据所述符号数确定分配给传输信道的子载波数NRE包括：根据确定所述NRE；其中，为物理资源块中的子载波数；为所述时隙的符号数；为所述时隙上不用于发送传输块的符号数。
结合第三方面，在第三方面的某些实现方式中，所述通信方法还包括：发送所述传输块。
结合第三方面，在第三方面的某些实现方式中，所述通信方法包括：确定第一符号集合，所述第一符号集合包括所述时隙中第一个符号、倒数第M个符号至倒数第二个符号、以及最后一个符号中的至少一个符号，所述M为大于或等于2的整数；所述确定时隙上不用于发送传输块的符号数包括：根据所述第一符号集合，确定所述时隙上不用于发送传输块的符号数。
结合第三方面，在第三方面的某些实现方式中，所述M的取值为信令配置的或预定义的。
结合第三方面，在第三方面的某些实现方式中，所述K的取值为信令配置的或预定义的。
结合第三方面，在第三方面的某些实现方式中，所述时隙的符号数为S，所述S为整数，且所述6≤S≤14。
第四方面，提供了一种通信方法，该通信方法可以由第二通信设备执行，或者，也可以由用于第二通信设备的芯片或电路执行，本申请对此不作限定。
所述通信方法包括：接收第一指示信息，所述第一指示信息用于指示时隙上不用于发送传输块的符号数，所述符号数为大于或等于0，且小于或等于5的整数；根据所述第一指示信息接收所述传输块。
结合第四方面，在第四方面的某些实现方式中，根据所述符号数确定分配给传输信道的子载波数NRE；根据所述NRE确定所述传输块的大小。
结合第四方面，在第四方面的某些实现方式中，所述通信方法还包括：根据所述传输块的大小，接收所述传输块。
结合第四方面，在第四方面的某些实现方式中，所述符号数包括所述时隙上第一个符号和/或最后一个符号中不用于发送所述传输块的符号数。
结合第四方面，在第四方面的某些实现方式中，所述第一指示信息包括第一字段，所述第一字段指示所述时隙上第一个符号和/或最后一个符号中不用于发送所述传输块的符号数。
结合第四方面，在第四方面的某些实现方式中，所述根据所述符号数确定分配给传输信道的子载波数NRE包括：根据确定所述NRE；其中，为物理资源块中的子载波数；为所述时隙的符号数；为所述第一个符号和所述最后一个符号中不用于发送所述传输块的符号数，所述的取值为0，1或2。
结合第四方面，在第四方面的某些实现方式中，所述时隙上不用于发送传输块的符号数还包括与物理侧行链路反馈控制信道PSFCH对应的符号数，其中，所述与PSFCH对应的符号数大于或等于K，且小于或等于K+2，所述K为所述PSFCH传输占用的符号数。
结合第四方面，在第四方面的某些实现方式中，所述第一指示信息包括第一字段，所述第一字段指示所述第一个符号、所述与PSFCH对应的符号、以及所述最后一个符号中不用于发送所述传输块的符号数。
结合第四方面，在第四方面的某些实现方式中，所述根据所述符号数确定分配给传输信道的子载波数NRE包括：根据确定所述NRE；其中，为物理资源块中的子载波数；为所述时隙的符号数；为所述第一个符号和所述最后一个符号中不用于发送所述传输块的符号数，所述的取值为0，1或2；为所述与PSFCH对应的符号中不用于发送所述传输块的符号数。
结合第四方面，在第四方面的某些实现方式中，所述根据所述符号数确定分配给传输信道的子载波数NRE包括：根据确定所述NRE；其中，为物理资源块中的子载波数；为所述时隙的符号数；为所述时隙上不用于发送传输块的符号数。
结合第四方面，在第四方面的某些实现方式中，所述K的取值为信令配置的或预定义的。
结合第四方面，在第四方面的某些实现方式中，所述时隙的符号数为S，所述S为整数，且所述6≤S≤14。
第四方面及各个可能的实现方式的有益效果可以参考第三方面相关的描述，在此不予赘述。
第五方面，提供了一种通信设备，该通信设备可以为上文所述的第一通信设备或第一通信设备的芯片或电路，本申请对此不作限定。
所述通信设备包括：处理单元，用于确定第一符号集合，所述第一符号集合为时隙中第一消息传输不占用的符号的集合，所述第一符号集合包括所述时隙中倒数第M个符号至倒数第二个符号中的至少一个符号，所述M为大于或等于2的整数；收发单元，用于发送第一指示信息，所述第一指示信息用于指示所述第一符号集合。
结合第五方面，在第五方面的某些实现方式中，所述倒数第M个符号至倒数第二个符号包括与物理侧行链路反馈控制信道PSFCH对应的符号。
结合第五方面，在第五方面的某些实现方式中，所述第一指示信息包括第一信息、第二信息和第三信息，所述第一信息、所述第二信息和所述第三信息中的至少一项用于指示所述第一符号集合；其中，所述第一信息用于指示发送或接收所述PSFCH；所述第二信息用于指示所述PSFCH是否频分复用；所述第三信息用于指示所述PSFCH的播类型。
结合第五方面，在第五方面的某些实现方式中，所述第一信息用于指示接收所述PSFCH，所述第一符号集合包括所述PSFCH传输占用的符号之前的两个符号和所述PSFCH传输占用的符号，所述PSFCH传输占用的符号数为(M-3)，所述M大于或等于4；或者，所述第一信息用于指示发送所述PSFCH以及所述第二信息用于指示所述PSFCH频分复用，或者，所述第一信息用于指示发送所述PSFCH以及所述第三信息用于指示所述PSFCH的播类型为组播，所述第一符号集合包括所述PSFCH传输占用的符号之前的一个符号和所述PSFCH传输占用的符号，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3；或者，所述第一信息用于指示发送所述PSFCH以及所述第二信息用于指示所述PSFCH未频分复用，或者，所述第一信息用于指示发送所述PSFCH以及所述第三信息用于指示所述PSFCH的播类型为单播，所述第一符号集合包括所述PSFCH传输占用的符号，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第五方面，在第五方面的某些实现方式中，所述第一指示信息包括第一信息、第二信息、第三信息和第四信息，所述第一信息、所述第二信息和所述第三信息中的至少一项与所述第四信息用于指示所述第一符号集合；其中，所述第一信息用于指示发送或接收所述PSFCH；所述第二信息用于指示所述PSFCH是否频分复用；所述第三信息用于指示所述PSFCH的播类型。
结合第五方面，在第五方面的某些实现方式中，所述第一符号集合还包括所述时隙的第一个符号和/或最后一个符号。
结合第五方面，在第五方面的某些实现方式中，所述第一指示信息包括第一字段，所述第一字段指示所述第一个符号、所述倒数第M个符号至倒数第二个符号、以所述及最后一个符号中所述第一消息传输不占用的符号。
结合第五方面，在第五方面的某些实现方式中，所述第一指示信息包括第一信息、第二信息、第三信息、第五信息和第六信息，所述第五信息或所述第六信息、与所述第一信息、所述第二信息和所 述第三信息中的至少一项用于指示所述第一符号集合；其中，所述第一信息用于指示发送或接收所述PSFCH；所述第二信息用于指示所述PSFCH是否频分复用；所述第三信息用于指示所述PSFCH的播类型；所述第五信息用于指示所述时隙的第一个符号前是否存在循环前缀扩展CPE传输的信号；所述第六信息用于指示所述时隙在时域上是否连续传输。
结合第五方面，在第五方面的某些实现方式中，所述第一信息用于指示接收所述PSFCH、以及所述第五信息用于指示所述时隙的第一个符号前存在CPE传输的信号，所述第一符号集合包括所述PSFCH传输占用的符号之前的两个符号和所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-3)，所述M大于或等于4。
结合第五方面，在第五方面的某些实现方式中，所述第一信息用于指示接收所述PSFCH、以及所述第六信息用于指示所述时隙在时域上连续传输，所述第一符号集合包括所述PSFCH传输占用的符号之前的两个符号和所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-3)，所述M大于或等于4。
结合第五方面，在第五方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第五信息用于指示所述时隙的第一个符号前不存在CPE传输的信号、以及所述第六信息用于指示所述时隙与后一个时隙在时域上连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号之前的两个符号、所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-3)，所述M大于或等于4。
结合第五方面，在第五方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第六信息用于指示所述时隙与前一个时隙在时域上非连续传输、以及所述第六信息用于指示所述时隙与后一个时隙在时域上连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号之前的两个符号、所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-3)，所述M大于或等于4。
结合第五方面，在第五方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、第五信息用于指示所述时隙的第一个符号前存在CPE传输的信号、所述第六信息用于指示所述时隙与后一个时隙在时域上非连续传输、以及所述第六信息用于指示所述时隙与前一个时隙在时域上连续传输，所述第一符号集合包括所述PSFCH传输占用的符号之前的两个符号、所述PSFCH传输占用的符号、以及所述最后一个符号，其中，所述PSFCH传输占用的符号数为(M-3)，所述M大于或等于4。
结合第五方面，在第五方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第五信息用于指示所述时隙的第一个符号前不存在CPE传输的信号、以及所述第六信息用于指示所述时隙在时域上非连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号之前的两个符号、所述PSFCH传输占用的符号、以及最后一个符号，其中，所述PSFCH传输占用的符号数为(M-3)，所述M大于或等于4。
结合第五方面，在第五方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、以及所述第六信息用于指示所述时隙在时域上非连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号之前的两个符号、所述PSFCH传输占用的符号、以及最后一个符号，其中，所述PSFCH传输占用的符号数为(M-3)，所述M大于或等于4。
结合第五方面，在第五方面的某些实现方式中，所述第一信息用于指示接收所述PSFCH、所述第二信息用于指示所述PSFCH频分复用、以及所述第五信息用于指示所述时隙的第一个符号前存在CPE传输的信号，所述第一符号集合包括所述PSFCH传输占用的符号之前的一个符号和所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第五方面，在第五方面的某些实现方式中，所述第一信息用于指示接收所述PSFCH、所述第二信息用于指示所述PSFCH频分复用、以及所述第六信息用于指示所述时隙在时域上连续传输，所述第一符号集合包括所述PSFCH传输占用的符号之前的一个符号和所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第五方面，在第五方面的某些实现方式中，所述第一信息用于指示接收所述PSFCH、所述第三信息用于指示所述PSFCH的播类型为组播、以及所述第五信息用于指示所述时隙的第一个符号前存在CPE传输的信号，所述第一符号集合包括所述PSFCH传输占用的符号之前的一个符号和所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第五方面，在第五方面的某些实现方式中，所述第一信息用于指示接收所述PSFCH、所述第三信息用于指示所述PSFCH的播类型为组播、以及所述第六信息用于指示所述时隙在时域上连续传输，所述第一符号集合包括所述PSFCH传输占用的符号之前的一个符号和所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第五方面，在第五方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第二信息用于指示所述PSFCH频分复用、所述第五信息用于指示所述时隙的第一个符号前不存在CPE传输的信号、以及所述第六信息用于指示所述时隙与所述时隙的后一个时隙在时域上连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号之前的一个符号、以及所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第五方面，在第五方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第二信息用于指示所述PSFCH频分复用、所述第六信息用于指示所述时隙与前一个时隙在时域上非连续传输、以及所述第六信息用于指示所述时隙与后一个时隙在时域上连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号之前的一个符号、以及所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第五方面，在第五方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第三信息用于指示所述PSFCH的播类型为组播、所述第五信息用于指示所述时隙的第一个符号前不存在CPE传输的信号、以及所述第六信息用于指示所述时隙与所述时隙的后一个时隙在时域上连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号之前的一个符号、以及所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第五方面，在第五方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第三信息用于指示所述PSFCH的播类型为组播、所述第六信息用于指示所述时隙与前一个时隙在时域上非连续传输、以及所述第六信息用于指示所述时隙与后一个时隙在时域上连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号之前的一个符号、以及所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第五方面，在第五方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第二信息用于指示所述PSFCH频分复用、第五信息用于指示所述时隙的第一个符号前存在CPE传输的信号、所述第六信息用于指示所述时隙与后一个时隙在时域上非连续传输、以及所述第六信息用于指示所述时隙与前一个时隙在时域上连续传输，所述第一符号集合包括所述PSFCH传输占用的符号之前的一个符号、所述PSFCH传输占用的符号、以及最后一个符号，其中，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第五方面，在第五方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第三信息用于指示所述PSFCH的播类型为组播、第五信息用于指示所述时隙的第一个符号前存在CPE传输的信号、所述第六信息用于指示所述时隙与后一个时隙在时域上非连续传输、以及所述第六信息用于指示所述时隙与前一个时隙在时域上连续传输，所述第一符号集合包括所述PSFCH传输占用的符号之前的一个符号、所述PSFCH传输占用的符号、以及最后一个符号，其中，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第五方面，在第五方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第二信息用于指示所述PSFCH频分复用、所述第五信息用于指示所述时隙的第一个符号前不存在CPE传输的信号、以及所述第六信息用于指示所述时隙在时域上非连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号之前的一个符号、所述PSFCH传输占用的符号、以及最后一个符号，其中，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第五方面，在第五方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第二信息用于指示所述PSFCH频分复用、以及所述第六信息用于指示所述时隙在时域上非连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号之前的一个符号、所述PSFCH传输占用的符号、以及最后一个符号，其中，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第五方面，在第五方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第三信息用于指示所述PSFCH的播类型为组播、所述第五信息用于指示所述时隙的第一个符号前不存在 CPE传输的信号、以及所述第六信息用于指示所述时隙在时域上非连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号之前的一个符号、所述PSFCH传输占用的符号、以及最后一个符号，其中，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第五方面，在第五方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第三信息用于指示所述PSFCH的播类型为组播、以及所述第六信息用于指示所述时隙在时域上非连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号之前的一个符号、所述PSFCH传输占用的符号、以及最后一个符号，其中，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第五方面，在第五方面的某些实现方式中，所述第一信息用于指示接收所述PSFCH、所述第二信息用于指示所述PSFCH未频分复用、以及所述第五信息用于指示所述时隙的第一个符号前存在CPE传输的信号，所述第一符号集合包括所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第五方面，在第五方面的某些实现方式中，所述第一信息用于指示接收所述PSFCH、所述第二信息用于指示所述PSFCH未频分复用、以及所述第六信息用于指示所述时隙在时域上连续传输，所述第一符号集合包括所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第五方面，在第五方面的某些实现方式中，所述第一信息用于指示接收所述PSFCH、所述第三信息用于指示所述PSFCH的播类型为单播、以及所述第五信息用于指示所述时隙的第一个符号前存在CPE传输的信号，所述第一符号集合包括所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第五方面，在第五方面的某些实现方式中，所述第一信息用于指示接收所述PSFCH、所述第三信息用于指示所述PSFCH的播类型为单播、以及所述第六信息用于指示所述时隙在时域上连续传输，所述第一符号集合包括所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第五方面，在第五方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第二信息用于指示所述PSFCH未频分复用、所述第五信息用于指示所述时隙的第一个符号前不存在CPE传输的信号、以及所述第六信息用于指示所述时隙与所述时隙的后一个时隙在时域上连续传输，所述第一符号集合包括所述第一个符号和所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第五方面，在第五方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第二信息用于指示所述PSFCH未频分复用、所述第六信息用于指示所述时隙与前一个时隙在时域上非连续传输、以及所述第六信息用于指示所述时隙与后一个时隙在时域上连续传输，所述第一符号集合包括所述第一个符号和所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第五方面，在第五方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第三信息用于指示所述PSFCH的播类型为单播、所述第五信息用于指示所述时隙的第一个符号前不存在CPE传输的信号、以及所述第六信息用于指示所述时隙与后一个时隙在时域上连续传输，所述第一符号集合包括所述第一个符号和所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第五方面，在第五方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第三信息用于指示所述PSFCH的播类型为单播、所述第六信息用于指示所述时隙与前一个时隙在时域上非连续传输、以及所述第六信息用于指示所述时隙与后一个时隙在时域上连续传输，所述第一符号集合包括所述第一个符号和所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第五方面，在第五方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第二信息用于指示所述PSFCH未频分复用、第五信息用于指示所述时隙的第一个符号前存在CPE传输的信号、所述第六信息用于指示所述时隙与后一个时隙在时域上非连续传输、以及所述时隙与前一个时隙在时域上连续传输，所述第一符号集合包括所述PSFCH传输占用的符号和所述最后一个符号，其 中，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第五方面，在第五方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第三信息用于指示所述PSFCH的播类型为单播、第五信息用于指示所述时隙的第一个符号前存在CPE传输的信号号、所述第六信息用于指示所述时隙与后一个时隙在时域上非连续传输、以及所述第六信息用于指示所述时隙与前一个时隙在时域上连续传输，所述第一符号集合包括所述PSFCH传输占用的符号和所述最后一个符号，其中，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第五方面，在第五方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第二信息用于指示所述PSFCH未频分复用、所述第五信息用于指示所述时隙的第一个符号前不存在CPE传输的信号、以及所述第六信息用于指示所述时隙在时域上非连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号、以及最后一个符号，其中，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第五方面，在第五方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第二信息用于指示所述PSFCH未频分复用、以及所述第六信息用于指示所述时隙在时域上非连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号、以及最后一个符号，其中，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第五方面，在第五方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第三信息用于指示所述PSFCH的播类型为单播、所述第五信息用于指示所述时隙的第一个符号前不存在CPE传输的信号、以及所述第六信息用于指示所述时隙在时域上非连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号、以及最后一个符号，其中，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第五方面，在第五方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第三信息用于指示所述PSFCH的播类型为单播、以及所述第六信息用于指示所述时隙在时域上非连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号、以及最后一个符号，其中，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第五方面，在第五方面的某些实现方式中，所述第一指示信息包括第一信息、第二信息、第三信息、第五信息、第六信息、和第七信息，所述第七信息与所述第一信息、所述第二信息、所述第三信息、所述第五信息和所述第六信息中的至少一项用于指示所述第一符号集合；其中，所述第一信息用于指示发送或接收所述PSFCH；所述第二信息用于指示所述PSFCH是否频分复用；所述第三信息用于指示所述PSFCH的播类型；所述第五信息用于指示所述时隙的第一个符号前是否存在循环前缀扩展CPE传输的信号；所述第六信息用于指示所述时隙在时域上是否连续传输。
结合第五方面，在第五方面的某些实现方式中，所述第一指示信息包括第八信息，所述第一指示信息还包括第九信息和/或第十信息；其中，所述第八信息用于指示所述倒数第M个符号至倒数第二个符号中所述第一消息传输不占用的符号；所述第九信息用于指示所述第一个符号是否是所述第一消息传输不占用的符号；所述第十信息用于指示所述最后一个符号是否是所述第一消息传输不占用的符号。
结合第五方面，在第五方面的某些实现方式中，所述第九信息用于指示所述时隙的第一个符号前是否存在CPE传输的信号或所述时隙在时域上是否连续传输。
结合第五方面，在第五方面的某些实现方式中，所述第九信息用于指示所述时隙的第一个符号前不存在CPE传输的信号，所述第一符号集合包括所述第一个符号，或者，所述第九信息用于指示所述时隙在时域上非连续传输，所述第一符号集合包括所述第一个符号。
结合第五方面，在第五方面的某些实现方式中，所述第十信息用于指示所述时隙在时域上是否连续传输。
结合第五方面，在第五方面的某些实现方式中，所述第十信息用于指示所述时隙在时域上非连续传输，所述第一符号集合包括所述最后一个符号。
结合第五方面，在第五方面的某些实现方式中，所述第八信息包括第一信息、第二信息和第三信息，所述第一信息、所述第二信息和所述第三信息中的至少一项用于指示所述倒数第M个符号至倒数第二个符号中所述第一消息传输不占用的符号；其中，所述第一信息用于指示发送或接收所述PSFCH；所述第二信息用于指示所述PSFCH是否频分复用；所述第三信息用于指示所述PSFCH的播类型。
结合第五方面，在第五方面的某些实现方式中，所述第一信息用于指示接收所述PSFCH，所述第 一符号集合包括所述PSFCH传输占用的符号之前的两个符号和所述PSFCH传输占用的符号，所述PSFCH传输占用的符号数为(M-3)，所述M大于或等于4；或者，所述第一信息用于指示发送所述PSFCH以及所述第二信息用于指示所述PSFCH频分复用，或者，所述第一信息用于指示发送所述PSFCH以及所述第三信息用于指示所述PSFCH的播类型为组播，所述第一符号集合包括所述PSFCH传输占用的符号之前的一个符号和所述PSFCH传输占用的符号，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3；或者，所述第一信息用于指示发送所述PSFCH以及所述第二信息用于指示所述PSFCH未频分复用，或者，所述第一信息用于指示发送所述PSFCH以及所述第三信息用于指示所述PSFCH的播类型为单播，所述第一符号集合包括所述PSFCH传输占用的符号，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第五方面，在第五方面的某些实现方式中，所述第八信息包括第一信息、第二信息、第三信息和第四信息，所述第四信息与所述第一信息、所述第二信息或所述第三信息中的至少一项用于指示所述倒数第M个符号至倒数第二个符号中所述第一消息传输不占用的符号；其中，所述第一信息用于指示发送或接收所述PSFCH；所述第二信息用于指示所述PSFCH是否频分复用；所述第三信息用于指示所述PSFCH的播类型。
结合第五方面，在第五方面的某些实现方式中，所述PSFCH传输占用的符号数为信令配置的或预定义的。
结合第五方面，在第五方面的某些实现方式中，所述M的取值为信令配置的或预定义的。
结合第五方面，在第五方面的某些实现方式中，所述时隙的符号数为S，所述S为整数，且所述6≤S≤14。
结合第五方面，在第五方面的某些实现方式中，所述收发单元还用于：根据所述第一符号集合和所述时隙占用的符号，发送所述第一消息。
结合第五方面，在第五方面的某些实现方式中，所述第一消息包括所述第一通信设备发送的数据和/或控制信息。
结合第五方面，在第五方面的某些实现方式中，所述处理具体用于：根据所述第一符号集合，确定时隙上不用于发送传输块的符号数，所述符号数用于确定所述传输块的大小，所述符号数为大于或等于0，且小于或等于5的整数；所述第一指示信息还用于指示所述符号数。
第五方面及各个可能的实现方式的有益效果可以参考第一方面相关的描述，在此不予赘述。
第六方面，提供了一种通信设备，该通信设备可以为上文所述的第二通信设备或第二通信设备的芯片或电路，本申请对此不作限定。
所述通信设备包括：收发单元，用于接收第一指示信息，所述第一指示信息用于指示第一符号集合，所述第一符号集合为时隙中第一消息传输不占用的符号的集合，所述第一符号集合包括所述时隙中倒数第M个符号至倒数第二个符号中的至少一个符号，所述M为大于或等于2的整数；处理单元，用于根据所述第一指示信息，接收所述第一消息。
结合第六方面，在第六方面的某些实现方式中，所述处理单元还用于：根据所述第一符号集合，对所述第一消息进行解码。
结合第六方面，在第六方面的某些实现方式中，所述倒数第M个符号至倒数第二个符号包括与物理侧行链路反馈控制信道PSFCH对应的符号。
结合第六方面，在第六方面的某些实现方式中，所述第一指示信息包括第一信息、第二信息和第三信息，所述第一信息、所述第二信息和所述第三信息中的至少一项用于指示所述第一符号集合；其中，所述第一信息用于指示发送或接收所述PSFCH；所述第二信息用于指示所述PSFCH是否频分复用；所述第三信息用于指示所述PSFCH的播类型。
结合第六方面，在第六方面的某些实现方式中，所述第一信息用于指示接收所述PSFCH，所述第一符号集合包括所述PSFCH传输占用的符号之前的两个符号和所述PSFCH传输占用的符号，所述PSFCH传输占用的符号数为(M-3)，所述M大于或等于4；或者，所述第一信息用于指示发送所述PSFCH以及所述第二信息用于指示所述PSFCH频分复用，或者，所述第一信息用于指示发送所述PSFCH以及所述第三信息用于指示所述PSFCH的播类型为组播，所述第一符号集合包括所述PSFCH传输占用的符号之前的一个符号和所述PSFCH传输占用的符号，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3；或者，所述第一信息用于指示发送所述PSFCH以及所述第二信息用于指示所述PSFCH 未频分复用，或者，所述第一信息用于指示发送所述PSFCH以及所述第三信息用于指示所述PSFCH的播类型为单播，所述第一符号集合包括所述PSFCH传输占用的符号，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第六方面，在第六方面的某些实现方式中，所述第一指示信息包括第一信息、第二信息、第三信息和第四信息，所述第一信息、所述第二信息和所述第三信息中的至少一项与所述第四信息用于指示所述第一符号集合；其中，所述第一信息用于指示发送或接收所述PSFCH；所述第二信息用于指示所述PSFCH是否频分复用；所述第三信息用于指示所述PSFCH的播类型。
结合第六方面，在第六方面的某些实现方式中，所述第一符号集合还包括所述时隙的第一个符号和/或最后一个符号。
结合第六方面，在第六方面的某些实现方式中，所述第一指示信息包括第一字段，所述第一字段指示所述第一个符号、所述倒数第M个符号至倒数第二个符号、以所述及最后一个符号中所述第一消息传输不占用的符号。
结合第六方面，在第六方面的某些实现方式中，所述第一指示信息包括第一信息、第二信息、第三信息、第五信息和第六信息，所述第五信息或所述第六信息、与所述第一信息、所述第二信息和所述第三信息中的至少一项用于指示所述第一符号集合；其中，所述第一信息用于指示发送或接收所述PSFCH；所述第二信息用于指示所述PSFCH是否频分复用；所述第三信息用于指示所述PSFCH的播类型；所述第五信息用于指示所述时隙的第一个符号前是否存在CPE传输的信号；所述第六信息用于指示所述时隙在时域上是否连续传输。
结合第六方面，在第六方面的某些实现方式中，所述第一信息用于指示接收所述PSFCH、以及所述第五信息用于指示所述时隙的第一个符号前存在CPE传输的信号，所述第一符号集合包括所述PSFCH传输占用的符号之前的两个符号和所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-3)，所述M大于或等于4。
结合第六方面，在第六方面的某些实现方式中，所述第一信息用于指示接收所述PSFCH、以及所述第六信息用于指示所述时隙在时域上连续传输，所述第一符号集合包括所述PSFCH传输占用的符号之前的两个符号和所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-3)，所述M大于或等于4。
结合第六方面，在第六方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第五信息用于指示所述时隙的第一个符号前不存在CPE传输的信号、以及所述第六信息用于指示所述时隙与后一个时隙在时域上连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号之前的两个符号、所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-3)，所述M大于或等于4。
结合第六方面，在第六方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第六信息用于指示所述时隙与前一个时隙在时域上非连续传输、以及所述第六信息用于指示所述时隙与后一个时隙在时域上连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号之前的两个符号、所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-3)，所述M大于或等于4。
结合第六方面，在第六方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、第五信息用于指示所述时隙的第一个符号前存在CPE传输的信号、所述第六信息用于指示所述时隙与后一个时隙在时域上非连续传输、以及所述第六信息用于指示所述时隙与前一个时隙在时域上连续传输，所述第一符号集合包括所述PSFCH传输占用的符号之前的两个符号、所述PSFCH传输占用的符号、以及所述最后一个符号，其中，所述PSFCH传输占用的符号数为(M-3)，所述M大于或等于4。
结合第六方面，在第六方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第五信息用于指示所述时隙的第一个符号前不存在CPE传输的信号、以及所述第六信息用于指示所述时隙在时域上非连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号之前的两个符号、所述PSFCH传输占用的符号、以及最后一个符号，其中，所述PSFCH传输占用的符号数为(M-3)，所述M大于或等于4。
结合第六方面，在第六方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、以及所述第六信息用于指示所述时隙在时域上非连续传输，所述第一符号集合包括所述第一个符号、所述 PSFCH传输占用的符号之前的两个符号、所述PSFCH传输占用的符号、以及最后一个符号，其中，所述PSFCH传输占用的符号数为(M-3)，所述M大于或等于4。
结合第六方面，在第六方面的某些实现方式中，所述第一信息用于指示接收所述PSFCH、所述第二信息用于指示所述PSFCH频分复用、以及所述第五信息用于指示所述时隙的第一个符号前存在CPE传输的信号，所述第一符号集合包括所述PSFCH传输占用的符号之前的一个符号和所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第六方面，在第六方面的某些实现方式中，所述第一信息用于指示接收所述PSFCH、所述第二信息用于指示所述PSFCH频分复用、以及所述第六信息用于指示所述时隙在时域上连续传输，所述第一符号集合包括所述PSFCH传输占用的符号之前的一个符号和所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第六方面，在第六方面的某些实现方式中，所述第一信息用于指示接收所述PSFCH、所述第三信息用于指示所述PSFCH的播类型为组播、以及所述第五信息用于指示所述时隙的第一个符号前存在CPE传输的信号，所述第一符号集合包括所述PSFCH传输占用的符号之前的一个符号和所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第六方面，在第六方面的某些实现方式中，所述第一信息用于指示接收所述PSFCH、所述第三信息用于指示所述PSFCH的播类型为组播、以及所述第六信息用于指示所述时隙在时域上连续传输，所述第一符号集合包括所述PSFCH传输占用的符号之前的一个符号和所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第六方面，在第六方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第二信息用于指示所述PSFCH频分复用、所述第五信息用于指示所述时隙的第一个符号前不存在CPE传输的信号、以及所述第六信息用于指示所述时隙与所述时隙的后一个时隙在时域上连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号之前的一个符号、以及所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第六方面，在第六方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第二信息用于指示所述PSFCH频分复用、所述第六信息用于指示所述时隙与前一个时隙在时域上非连续传输、以及所述第六信息用于指示所述时隙与后一个时隙在时域上连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号之前的一个符号、以及所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第六方面，在第六方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第三信息用于指示所述PSFCH的播类型为组播、所述第五信息用于指示所述时隙的第一个符号前不存在CPE传输的信号、以及所述第六信息用于指示所述时隙与所述时隙的后一个时隙在时域上连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号之前的一个符号、以及所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第六方面，在第六方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第三信息用于指示所述PSFCH的播类型为组播、所述第六信息用于指示所述时隙与前一个时隙在时域上非连续传输、以及所述第六信息用于指示所述时隙与后一个时隙在时域上连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号之前的一个符号、以及所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第六方面，在第六方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第二信息用于指示所述PSFCH频分复用、第五信息用于指示所述时隙的第一个符号前存在CPE传输的信号、所述第六信息用于指示所述时隙与后一个时隙在时域上非连续传输、以及所述第六信息用于指示所述时隙与前一个时隙在时域上连续传输，所述第一符号集合包括所述PSFCH传输占用的符号之前的一个符号、所述PSFCH传输占用的符号、以及最后一个符号，其中，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第六方面，在第六方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第三信息用于指示所述PSFCH的播类型为组播、第五信息用于指示所述时隙的第一个符号前存在CPE传输的信号、所述第六信息用于指示所述时隙与后一个时隙在时域上非连续传输、以及所述第六信息用于指示所述时隙与前一个时隙在时域上连续传输，所述第一符号集合包括所述PSFCH传输占用的符 号之前的一个符号、所述PSFCH传输占用的符号、以及最后一个符号，其中，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第六方面，在第六方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第二信息用于指示所述PSFCH频分复用、所述第五信息用于指示所述时隙的第一个符号前不存在CPE传输的信号、以及所述第六信息用于指示所述时隙在时域上非连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号之前的一个符号、所述PSFCH传输占用的符号、以及最后一个符号，其中，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第六方面，在第六方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第二信息用于指示所述PSFCH频分复用、以及所述第六信息用于指示所述时隙在时域上非连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号之前的一个符号、所述PSFCH传输占用的符号、以及最后一个符号，其中，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第六方面，在第六方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第三信息用于指示所述PSFCH的播类型为组播、所述第五信息用于指示所述时隙的第一个符号前不存在CPE传输的信号、以及所述第六信息用于指示所述时隙在时域上非连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号之前的一个符号、所述PSFCH传输占用的符号、以及最后一个符号，其中，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第六方面，在第六方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第三信息用于指示所述PSFCH的播类型为组播、以及所述第六信息用于指示所述时隙在时域上非连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号之前的一个符号、所述PSFCH传输占用的符号、以及最后一个符号，其中，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3。
结合第六方面，在第六方面的某些实现方式中，所述第一信息用于指示接收所述PSFCH、所述第二信息用于指示所述PSFCH未频分复用、以及所述第五信息用于指示所述时隙的第一个符号前存在CPE传输的信号，所述第一符号集合包括所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第六方面，在第六方面的某些实现方式中，所述第一信息用于指示接收所述PSFCH、所述第二信息用于指示所述PSFCH未频分复用、以及所述第六信息用于指示所述时隙在时域上连续传输，所述第一符号集合包括所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第六方面，在第六方面的某些实现方式中，所述第一信息用于指示接收所述PSFCH、所述第三信息用于指示所述PSFCH的播类型为单播、以及所述第五信息用于指示所述时隙的第一个符号前存在CPE传输的信号，所述第一符号集合包括所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第六方面，在第六方面的某些实现方式中，所述第一信息用于指示接收所述PSFCH、所述第三信息用于指示所述PSFCH的播类型为单播、以及所述第六信息用于指示所述时隙在时域上连续传输，所述第一符号集合包括所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第六方面，在第六方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第二信息用于指示所述PSFCH未频分复用、所述第五信息用于指示所述时隙的第一个符号前不存在CPE传输的信号、以及所述第六信息用于指示所述时隙与所述时隙的后一个时隙在时域上连续传输，所述第一符号集合包括所述第一个符号和所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第六方面，在第六方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第二信息用于指示所述PSFCH未频分复用、所述第六信息用于指示所述时隙与前一个时隙在时域上非连续传输、以及所述第六信息用于指示所述时隙与后一个时隙在时域上连续传输，所述第一符号集合包括所述第一个符号和所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第六方面，在第六方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第三信息用于指示所述PSFCH的播类型为单播、所述第五信息用于指示所述时隙的第一个符号前不存在CPE传输的信号、以及所述第六信息用于指示所述时隙与后一个时隙在时域上连续传输，所述第一符号集合包括所述第一个符号和所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第六方面，在第六方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第三信息用于指示所述PSFCH的播类型为单播、所述第六信息用于指示所述时隙与前一个时隙在时域上非连续传输、以及所述第六信息用于指示所述时隙与后一个时隙在时域上连续传输，所述第一符号集合包括所述第一个符号和所述PSFCH传输占用的符号，其中，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第六方面，在第六方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第二信息用于指示所述PSFCH未频分复用、第五信息用于指示所述时隙的第一个符号前存在CPE传输的信号、所述第六信息用于指示所述时隙与后一个时隙在时域上非连续传输、以及所述时隙与前一个时隙在时域上连续传输，所述第一符号集合包括所述PSFCH传输占用的符号和所述最后一个符号，其中，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第六方面，在第六方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第三信息用于指示所述PSFCH的播类型为单播、第五信息用于指示所述时隙的第一个符号前存在CPE传输的信号号、所述第六信息用于指示所述时隙与后一个时隙在时域上非连续传输、以及所述第六信息用于指示所述时隙与前一个时隙在时域上连续传输，所述第一符号集合包括所述PSFCH传输占用的符号和所述最后一个符号，其中，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第六方面，在第六方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第二信息用于指示所述PSFCH未频分复用、所述第五信息用于指示所述时隙的第一个符号前不存在CPE传输的信号、以及所述第六信息用于指示所述时隙在时域上非连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号、以及最后一个符号，其中，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第六方面，在第六方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第二信息用于指示所述PSFCH未频分复用、以及所述第六信息用于指示所述时隙在时域上非连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号、以及最后一个符号，其中，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第六方面，在第六方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第三信息用于指示所述PSFCH的播类型为单播、所述第五信息用于指示所述时隙的第一个符号前不存在CPE传输的信号、以及所述第六信息用于指示所述时隙在时域上非连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号、以及最后一个符号，其中，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第六方面，在第六方面的某些实现方式中，所述第一信息用于指示发送所述PSFCH、所述第三信息用于指示所述PSFCH的播类型为单播、以及所述第六信息用于指示所述时隙在时域上非连续传输，所述第一符号集合包括所述第一个符号、所述PSFCH传输占用的符号、以及最后一个符号，其中，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第六方面，在第六方面的某些实现方式中，所述第一指示信息包括第一信息、第二信息、第三信息、第五信息、第六信息、和第七信息，所述第七信息与所述第一信息、所述第二信息、所述第三信息、所述第五信息和所述第六信息中的至少一项用于指示所述第一符号集合；其中，所述第一信息用于指示发送或接收所述PSFCH；所述第二信息用于指示所述PSFCH是否频分复用；所述第三信息用于指示所述PSFCH的播类型；所述第五信息用于指示所述时隙的第一个符号前是否存在CPE传输的信号；所述第六信息用于指示所述时隙在时域上是否连续传输。
结合第六方面，在第六方面的某些实现方式中，所述第一指示信息包括第八信息，所述第一指示信息还包括第九信息和/或第十信息；其中，所述第八信息用于指示所述倒数第M个符号至倒数第二个符号中所述第一消息传输不占用的符号；所述第九信息用于指示所述第一个符号是否是所述第一消息传输不占用的符号；所述第十信息用于指示所述最后一个符号是否是所述第一消息传输不占用的符号。
结合第六方面，在第六方面的某些实现方式中，所述第九信息用于指示所述时隙的第一个符号前是否存在CPE传输的信号或所述时隙在时域上是否连续传输。
结合第六方面，在第六方面的某些实现方式中，所述第九信息用于指示所述时隙的第一个符号前不存在CPE传输的信号，所述第一符号集合包括所述第一个符号，或者，所述第九信息用于指示所述时隙在时域上非连续传输，所述第一符号集合包括所述第一个符号。
结合第六方面，在第六方面的某些实现方式中，所述第十信息用于指示所述时隙在时域上是否连续传输。
结合第六方面，在第六方面的某些实现方式中，所述第十信息用于指示所述时隙在时域上非连续传输，所述第一符号集合包括所述最后一个符号。
结合第六方面，在第六方面的某些实现方式中，所述第八信息包括第一信息、第二信息和第三信息，所述第一信息、所述第二信息和所述第三信息中的至少一项用于指示所述倒数第M个符号至倒数第二个符号中所述第一消息传输不占用的符号；其中，所述第一信息用于指示发送或接收所述PSFCH；所述第二信息用于指示所述PSFCH是否频分复用；所述第三信息用于指示所述PSFCH的播类型。
结合第六方面，在第六方面的某些实现方式中，所述第一信息用于指示接收所述PSFCH，所述第一符号集合包括所述PSFCH传输占用的符号之前的两个符号和所述PSFCH传输占用的符号，所述PSFCH传输占用的符号数为(M-3)，所述M大于或等于4；或者，所述第一信息用于指示发送所述PSFCH以及所述第二信息用于指示所述PSFCH频分复用，或者，所述第一信息用于指示发送所述PSFCH以及所述第三信息用于指示所述PSFCH的播类型为组播，所述第一符号集合包括所述PSFCH传输占用的符号之前的一个符号和所述PSFCH传输占用的符号，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3；或者，所述第一信息用于指示发送所述PSFCH以及所述第二信息用于指示所述PSFCH未频分复用，或者，所述第一信息用于指示发送所述PSFCH以及所述第三信息用于指示所述PSFCH的播类型为单播，所述第一符号集合包括所述PSFCH传输占用的符号，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
结合第六方面，在第六方面的某些实现方式中，所述第八信息包括第一信息、第二信息、第三信息和第四信息，所述第四信息与所述第一信息、所述第二信息或所述第三信息中的至少一项用于指示所述倒数第M个符号至倒数第二个符号中所述第一消息传输不占用的符号；其中，所述第一信息用于指示发送或接收所述PSFCH；所述第二信息用于指示所述PSFCH是否频分复用；所述第三信息用于指示所述PSFCH的播类型。
结合第六方面，在第六方面的某些实现方式中，所述M的取值为信令配置的或预定义的。
结合第六方面，在第六方面的某些实现方式中，所述时隙的符号数为S，所述S为整数，且所述6≤S≤14。
结合第六方面，在第六方面的某些实现方式中，所述第一消息包括所述第二通信设备接收的数据和/或控制信息。
第六方面及各个可能的实现方式的有益效果可以参考第二方面相关的描述，在此不予赘述。
第七方面，提供了一种通信设备，该通信设备可以为上文所述的第一通信设备或第一通信设备的芯片或电路，本申请对此不作限定。
所述通信设备包括：处理单元，用于确定时隙上不用于发送传输块的符号数，所述符号数用于确定所述传输块的大小，所述符号数为大于或等于0，且小于或等于5的整数；收发单元，用于发送第一指示信息，所述第一指示信息用于指示所述符号数。
结合第七方面，在第七方面的某些实现方式中，所述处理单元还用于：根据所述符号数确定分配给传输信道的子载波数NRE；根据所述NRE确定所述传输块的大小。
结合第七方面，在第七方面的某些实现方式中，所述符号数包括所述时隙上第一个符号和/或最后一个符号中不用于发送所述传输块的符号数。
结合第七方面，在第七方面的某些实现方式中，所述第一指示信息包括第一字段，所述第一字段指示所述时隙上第一个符号和/或最后一个符号中不用于发送所述传输块的符号数。
结合第七方面，在第七方面的某些实现方式中，所述处理单元具体用于：根据第一信息和第二信息，确定所述时隙上不用于发送传输块的符号数；其中，所述第一信息用于指示所述时隙的第一个符号前是否存在CPE传输的信号；所述第二信息用于指示所述时隙在时域上是否连续传输。
结合第七方面，在第七方面的某些实现方式中，所述处理单元具体用于：根据第一信息或第二信息、与第三信息，确定所述时隙上不用于发送传输块的符号数；其中，所述第一信息用于指示所述时隙的第一个符号前是否存在CPE传输的信号；所述第二信息用于指示所述时隙在时域上是否连续传输；所述第三信息用于指示所述第一个符号或所述最后一个符号是否是所述传输块不占用的符号。
结合第七方面，在第七方面的某些实现方式中，所述处理单元具体用于：根据确定所述NRE；其中，为物理资源块中的子载波数；为所述时隙的符号数；为所述第一个符号和所述最后一个符号中不用于发送所述传输块的符号数，所述的取值为0，1或2。
结合第七方面，在第七方面的某些实现方式中，所述时隙上不用于发送传输块的符号数还包括与物理侧行链路反馈控制信道PSFCH对应的符号数，其中，所述与PSFCH对应的符号数大于或等于K，且小于或等于K+2，所述K为所述PSFCH传输占用的符号数。
结合第七方面，在第七方面的某些实现方式中，所述第一指示信息包括第一字段，所述第一字段指示所述第一个符号、所述与PSFCH对应的符号、以及所述最后一个符号中不用于发送所述传输块的符号数。
结合第七方面，在第七方面的某些实现方式中，所述处理单元具体用于：根据第一信息、第二信息和第三信息，确定所述时隙上不用于发送传输块的符号数；其中，所述第一信息用于指示所述时隙的第一个符号前是否存在CPE传输的信号；所述第二信息用于指示所述时隙在时域上是否连续传输；所述第三信息用于指示以下至少一项：发送或接收所述PSFCH；所述PSFCH是否频分复用；所述PSFCH的播类型。
结合第七方面，在第七方面的某些实现方式中，所述处理单元具体用于：根据确定所述NRE；其中，为物理资源块中的子载波数；为所述时隙的符号数；为所述第一个符号和所述最后一个符号中不用于发送所述传输块的符号数，所述的取值为0，1或2；为所述与PSFCH对应的符号中不用于发送所述传输块的符号数。
结合第七方面，在第七方面的某些实现方式中，所述处理单元具体用于：根据确定所述NRE；其中，为物理资源块中的子载波数；为所述时隙的符号数；为所述时隙上不用于发送传输块的符号数。
结合第七方面，在第七方面的某些实现方式中，所述收发单元还包括：发送所述传输块。
结合第七方面，在第七方面的某些实现方式中，所述处理单元具体用于：确定第一符号集合，所述第一符号集合包括所述时隙中第一个符号、倒数第M个符号至倒数第二个符号、以及最后一个符号中的至少一个符号，所述M为大于或等于2的整数；根据所述第一符号集合，确定所述时隙上不用于发送传输块的符号数。
结合第七方面，在第七方面的某些实现方式中，所述M的取值为信令配置的或预定义的。
结合第七方面，在第七方面的某些实现方式中，所述K的取值为信令配置的或预定义的。
结合第七方面，在第七方面的某些实现方式中，所述时隙的符号数为S，所述S为整数，且所述6≤S≤14。
第七方面及各个可能的实现方式的有益效果可以参考第三方面相关的描述，在此不予赘述。
第八方面，提供了一种通信设备，该通信设备可以为上文所述的第二通信设备或第二通信设备的芯片或电路，本申请对此不作限定。
所述通信设备包括：收发单元，用于接收第一指示信息，所述第一指示信息用于指示时隙上不用于发送传输块的符号数，所述符号数为大于或等于0，且小于或等于5的整数；处理单元，用于根据所述第一指示信息接收所述传输块。
结合第八方面，在第八方面的某些实现方式中，处理单元还用于：根据所述符号数确定分配给传输信道的子载波数NRE；根据所述NRE确定所述传输块的大小。
结合第八方面，在第八方面的某些实现方式中，所述收发单元还用于：根据所述传输块的大小， 接收所述传输块。
结合第八方面，在第八方面的某些实现方式中，所述符号数包括所述时隙上第一个符号和/或最后一个符号中不用于发送所述传输块的符号数。
结合第八方面，在第八方面的某些实现方式中，所述第一指示信息包括第一字段，所述第一字段指示所述时隙上第一个符号和/或最后一个符号中不用于发送所述传输块的符号数。
结合第八方面，在第八方面的某些实现方式中，所述处理单元具体用于：根据确定所述NRE；其中，为物理资源块中的子载波数；为所述时隙的符号数；为所述第一个符号和所述最后一个符号中不用于发送所述传输块的符号数，所述的取值为0，1或2。
结合第八方面，在第八方面的某些实现方式中，所述时隙上不用于发送传输块的符号数还包括与物理侧行链路反馈控制信道PSFCH对应的符号数，其中，所述与PSFCH对应的符号数大于或等于K，且小于或等于K+2，所述K为所述PSFCH传输占用的符号数。
结合第八方面，在第八方面的某些实现方式中，所述第一指示信息包括第一字段，所述第一字段指示所述第一个符号、所述与PSFCH对应的符号、以及所述最后一个符号中不用于发送所述传输块的符号数。
结合第八方面，在第八方面的某些实现方式中，所述处理单元具体用于：根据确定所述NRE；其中，为物理资源块中的子载波数；为所述时隙的符号数；为所述第一个符号和所述最后一个符号中不用于发送所述传输块的符号数，所述的取值为0，1或2；为所述与PSFCH对应的符号中不用于发送所述传输块的符号数。
结合第八方面，在第八方面的某些实现方式中，所述处理单元具体用于：根据确定所述NRE；其中，为物理资源块中的子载波数；为所述时隙的符号数；为所述时隙上不用于发送传输块的符号数。
结合第八方面，在第八方面的某些实现方式中，所述K的取值为信令配置的或预定义的。
结合第八方面，在第八方面的某些实现方式中，所述时隙的符号数为S，所述S为整数，且所述6≤S≤14。
第八方面及各个可能的实现方式的有益效果可以参考第四方面相关的描述，在此不予赘述。
第九方面，提供了一种通信装置，该通信装置用于执行上述第一方面、第三方面及第一方面、第三方面的任一种可能实现方式中的通信方法。具体地，该通信装置可以包括用于执行第一方面、第三方面及第一方面、第三方面的任一种可能实现方式中的通信方法的单元和/或模块，如处理单元和/或收发单元。
在一种实现方式中，该通信装置为第一通信设备。当该通信装置为第一通信设备时，收发单元可以是收发器，或，输入/输出接口；处理单元可以是至少一个处理器。可选地，收发器可以为收发电路。可选地，输入/输出接口可以为输入/输出电路。
在另一种实现方式中，该通信装置为用于第一通信设备的芯片、芯片系统或电路。当该通信装置为用于第一通信设备的芯片、芯片系统或电路时，收发单元可以是该芯片、芯片系统或电路上的输入/输出接口、接口电路、输出电路、输入电路、管脚或相关电路等；处理单元可以是至少一个处理器、处理电路或逻辑电路等。
第十方面，提供了一种通信装置，该通信装置用于执行上述第二方面、第四方面及第二方面、第四方面的任一种可能实现方式中的通信方法。具体地，该通信装置可以包括用于执行第二方面、第四方面及第二方面、第四方面的任一种可能实现方式中的通信方法的单元和/或模块，如处理单元和/或收发单元。
在一种实现方式中，该通信装置为第二通信设备。当该通信装置为第二通信设备时，收发单元可以是收发器，或，输入/输出接口；处理单元可以是至少一个处理器。可选地，收发器可以为收发电路。可选地，输入/输出接口可以为输入/输出电路。
在另一种实现方式中，该通信装置为用于第二通信设备的芯片、芯片系统或电路。当该通信装置为用于第二通信设备的芯片、芯片系统或电路时，收发单元可以是该芯片、芯片系统或电路上的输入/输出接口、接口电路、输出电路、输入电路、管脚或相关电路等；处理单元可以是至少一个处理器、处理电路或逻辑电路等。
第十一方面，提供了一种通信装置，该通信装置包括：至少一个处理器，用于执行存储器存储的计算机程序或指令，以执行上述第一方面、第三方面及第一方面、第三方面的任一种可能实现方式中的通信方法。可选地，该通信装置还包括存储器，用于存储的计算机程序或指令。可选地，该通信装置还包括通信接口，处理器通过通信接口读取存储器存储的计算机程序或指令。
在一种实现方式中，该通信装置为第一通信设备。
在另一种实现方式中，该装置为用于第一通信设备的芯片、芯片系统或电路。
第十二方面，提供了一种通信装置，该通信装置包括：至少一个处理器，用于执行存储器存储的计算机程序或指令，以执行上述第二方面、第四方面及第二方面、第四方面的任一种可能实现方式中的通信方法。可选地，该通信装置还包括存储器，用于存储的计算机程序或指令。可选地，该通信装置还包括通信接口，处理器通过通信接口读取存储器存储的计算机程序或指令。
在一种实现方式中，该通信装置为第二通信设备。
在另一种实现方式中，该装置为用于第二通信设备的芯片、芯片系统或电路。
第十三方面，提供了一种处理器，用于执行上述第一方面至第四方面以及第一方面至第四方面的任一种可能实现方式中的通信方法。
对于处理器所涉及的发送和获取/接收等操作，如果没有特殊说明，或者，如果未与其在相关描述中的实际作用或者内在逻辑相抵触，则可以理解为处理器输出和接收、输入等操作，也可以理解为由射频电路和天线所进行的发送和接收操作，本申请对此不做限定。
第十四方面，提供一种了计算机可读存储介质，该计算机可读介质存储用于设备执行的程序代码，该程序代码包括用于执行上述第一方面至第四方面以及第一方面至第四方面的任一种可能实现方式中的通信方法。
其中，设备包括上述的第一通信设备或第二通信设备。
第十五方面，提供一种了包含指令的计算机程序产品，当该计算机程序产品在计算机上运行时，使得计算机执行上述第一方面至第四方面以及第一方面至第四方面的任一种可能实现方式中的通信方法。
第十六方面，提供一种了芯片，其特征在于，包括至少一个处理器和接口电路，该接口电路用于为该至少一个处理器提供程序指令或者数据，该至少一个处理器用于执行所述程序指令，以实现上述第一方面至第四方面以及第一方面至第四方面的任一种可能实现方式中的通信方法。
第十七方面，提供一种了通信系统，包括上述的第一通信设备和第二通信设备。
附图说明
图1是适用于本申请一实施例的无线通信系统的示意图。
图2和图3分别为时隙上各个符号的用途示意图。
图4为本申请实施例提供的一例通信方法的示意性流程图。
图5为本申请实施例提供的PSFCH传输占用的符号、AGC和实际传输PSFCH需要的符号数的示意图。
图6为本申请实施例提供的时隙上第一符号集合和PSFCH传输占用的符号之间的示意图。
图7至图34分别为本申请实施例提供的时隙上各个符号的用途示意图。
图35为本申请实施例提供的另一例通信方法的示意性流程图。
图36为本申请实施例提供的又一例通信方法的示意性流程图。
图37为本申请实施例提供的又一例通信方法的示意性流程图。
图38为本申请实施例提供的又一例通信方法的示意性流程图。
图39为本申请实施例提供的一例通信装置的示意性结构图。
图40为本申请实施例提供的另一例通信装置的示意性结构图。
具体实施方式
下面将结合附图，对本申请实施例中的技术方案进行描述。
为了便于理解本申请实施例，在介绍本申请实施例之前，先作出以下几点说明。
第一，在本申请实施例中，“指示”可以包括直接指示和间接指示，也可以包括显式指示和隐式指示。将某一信息(如下文所述的第一指示信息)所指示的信息称为待指示信息，则具体实现过程中，对待指示信息进行指示的方式有很多种，例如但不限于，可以直接指示待指示信息，如待指示信息本身或者该待指示信息的索引等。也可以通过指示其他信息来间接指示待指示信息，其中该其他信息与待指示信息之间存在关联关系。还可以仅仅指示待指示信息的一部分，而待指示信息的其他部分则是已知的或者提前约定的。例如，还可以借助预先约定(例如通信协议规定)的各个信息的排列顺序来实现对特定信息的指示，从而在一定程度上降低指示开销。
第二，在下文示出的实施例中第一、第二以及各种数字编号仅为描述方便进行的区分，并不用来限制本申请实施例的范围。例如，区分不同的配置信息、聚合级别、序列、时隙等。
第三，本申请实施例中涉及的“多个”是指两个或两个以上。
第四，本申请实施例中涉及的“符号”是以从0开始编号为例进行说明，其不应对本申请构成限制。
第五，本申请实施例中涉及的编号还可以称为序号。
第六，本申请实施例中所述的信令配置可以理解为网络设备配置的信令或预配置的信令。
可选地，该信令可以是配置在资源池上的。
本申请实施例对信令的类型不作限定。例如，信令可以包括无线资源控制(radio resource control，RRC)，系统信息块(system information block，SIB)或主系统信息块(master information block，MIB)等。
第七，本申请实施例中涉及的侧行链路控制信息(sidelink control information，SCI)可以是第一阶SCI(first stage SCI)，也可以是第二阶SCI(second stage SCI)，本发明对此不做限制。
第八，本申请实施例中示例的字段所使用的比特的取值和其所指示的内容对应的关系仅为示例，其不应对本申请构成限制。此外，本申请实施例中示例的字段所使用的比特的取值也仅为示例，其不应对本申请构成限制。
本申请提供的技术方案可以应用于各种通信系统，例如：第五代(5th generation，5G)或新无线(new radio，NR)系统、长期演进(long term evolution，LTE)系统、LTE频分双工(frequency division duplex，FDD)系统、LTE时分双工(time division duplex，TDD)系统等。本申请提供的技术方案还可以应用于未来的通信系统，如第六代移动通信系统。本申请提供的技术方案还可以应用于设备到设备(device to device，D2D)通信，车到万物(vehicle-to-everything，V2X)通信，机器到机器(machine to machine，M2M)通信，机器类型通信(machine type communication，MTC)，以及物联网(internet of things，IoT)通信系统或者其他通信系统。作为示例，V2X可包括车辆到车辆(vehicle-to-vehicle，V2V)，车辆到行人(vehicle-to-pedestrian，V2P)，车辆到基础设施(vehicle-to-infrastructure，V2I)。其中，基础设施例如为路侧单元(road side unit，RSU)或者网络设备。
本申请实施例中的终端设备包括各种具有无线通信功能的设备，其可用于连接人、物、机器等。终端设备可以广泛应用于各种场景，例如：蜂窝通信，D2D，V2X，端到端(peer to peer，P2P)，M2M，MTC，IoT，虚拟现实(virtual reality，VR)，增强现实(augmented reality，AR)，工业控制，自动驾驶，远程医疗，智能电网，智能家具，智能办公，智能穿戴，智能交通，智慧城市无人机，机器人，遥感，被动传感，定位，导航与跟踪，自主交付等场景。终端设备可以是上述任一场景下的终端，如MTC终端、IoT终端等。终端设备可以是第三代合作伙伴项目(3rd generation partnership project，3GPP)标准的用户设备(user equipment，UE)、终端(terminal)、固定设备、移动台(mobile station)设备或者说移动设备、用户单元(subscriber unit)、手持设备、车载设备、可穿戴设备、蜂窝电话(cellular phone)、智能电话(smart phone)、SIP电话、无线数据卡、个人数字助理(personal digital assistant，PDA)、电脑、平板电脑、笔记本电脑、无线调制解调器、手持设备(handset)、膝上型电脑(laptop computer)、具有无线收发功能的计算机、智能书、车辆、卫星、全球定位系统(global positioning system，GPS)设备、目标跟踪设备、飞行器(例如无人机、直升机、多直升机、四直升机、或飞机等)、船只、遥控设备智能家居设备、工业设备，或者内置于上述设备中的装置(例如，上述设备中的通信模块、调制解调器或芯片等)，或者连接到无线调制解调器的其它处理设备。为了描述方便，下文将终 端设备以终端或UE为例来描述。
应理解，在某些场景下，UE还可以用于充当基站。例如，UE可以充当调度实体，其在V2X、D2D或P2P等场景中的UE之间提供侧行链路信号。
本申请实施例中，用于实现终端设备的功能的装置，也即终端装置，可以是终端设备，也可以是能够支持终端设备实现该功能的装置，例如芯片系统或芯片，该装置可以被安装在终端设备中。本申请实施例中，芯片系统可以由芯片构成，也可以包括芯片和其他分立器件。
本申请实施例中的网络设备可以是用于与终端设备通信的设备，该网络设备也可以称为接入网设备或无线接入网设备，如网络设备可以是基站。本申请实施例中的网络设备可以是指将终端设备接入到无线网络的无线接入网(radio access network，RAN)节点(或设备)。基站可以广义的覆盖如下中的各种名称，或与如下名称进行替换，比如：节点B(NodeB)、演进型基站(evolved NodeB，eNB)、下一代基站(next generation NodeB，gNB)、中继站、接入点、传输点(transmitting and receiving point，TRP)、发射点(transmitting point，TP)、主站、辅站、多制式无线(motor slide retainer，MSR)节点、家庭基站、网络控制器、接入节点、无线节点、接入点(AP)、传输节点、收发节点、基带单元(BBU)、射频拉远单元(remote radio unit，RRU)、有源天线单元(active antenna unit，AAU)、射频头(remote radio head，RRH)、中心单元(central unit，CU)、分布式单元(distributed unit，DU)、定位节点等。基站可以是宏基站、微基站、中继节点、施主节点或类似物，或其组合。基站还可以指用于设置于前述设备或装置内的通信模块、调制解调器或芯片。基站还可以是移动交换中心以及D2D、V2X、M2M通信中承担基站功能的设备、6G网络中的网络侧设备、未来的通信系统中承担基站功能的设备等。基站可以支持相同或不同接入技术的网络。本申请的实施例对网络设备所采用的具体技术和具体设备形态不做限定。
基站可以是固定的，也可以是移动的。例如，直升机或无人机可以被配置成充当移动基站，一个或多个小区可以根据该移动基站的位置移动。在其他示例中，直升机或无人机可以被配置成用作与另一基站通信的设备。
网络设备和终端设备可以部署在陆地上，包括室内或室外、手持或车载；也可以部署在水面上；还可以部署在空中的飞机、气球和卫星上。本申请实施例中对网络设备和终端设备所处的场景不做限定。
首先简单介绍适用于本申请的网络架构，如下。
图1示出了适用于本申请一实施例的无线通信系统的示意图。如图1所示，该无线通信系统可以包括至少一个网络设备，例如图1所示的网络设备110，该无线通信系统还可以包括至少一个终端设备，例如图1所示的终端设备120和终端设备130。网络设备和终端设备均可配置多个天线，网络设备与终端设备可使用多天线技术通信。终端设备与终端设备之间可以直接进行通信。终端设备与终端设备之间直接通信的链路可称为侧行链路(sidelink，SL)，终端设备与终端设备之间的直接通信可称为SL通信。
应理解，图1为便于理解而示例的简化示意图，无线通信系统中还可以包括其他网络设备或者还可以包括其他终端设备，图1中未予以画出。
需要说明的是，本申请实施例提供的通信方法可以应用于包括网络设备和终端设备的无线通信系统。如图1所示，本申请实施例提供的通信方法可以应用于包括终端设备120或终端设备130，与网络设备110的无线通信系统。或者，本申请实施例提供的通信方法也可以应用于包括两个终端设备的无线通信系统。如图1所示，本申请实施例提供的通信方法可以应用于包括终端设备120和终端设备130的无线通信系统。
为便于理解本申请实施例，首先对本申请中涉及到的相关技术内容作简单说明。
1、速率匹配(rate matching)
在一个示例中，速率匹配是指将编码后比特数与实际可供传输资源数量对齐的操作。
示例性地，使用速率匹配可以理解为：对于做速率匹配的符号或时频资源，不用于传输相应的信道或数据。或者，根据不能使用的符号或时频资源，确定数据用于计算编码后的比特的可用资源的开销或数量。
在另一个示例中，速率匹配是指传输信道上的比特被重复(repeated)，或者被打掉/打孔(punctured)，以匹配物理信道的实际传输资源的承载能力。如果输入比特数少于输出比特数，用重复；如果输入比 特数多于输出比特数，用打孔。
示例性地，重复就是在特定比特后面插入前面已经出现过的比特。
示例性地，打孔就是将当前的比特打掉，同时将后面的比特依次前移一位。或者，打孔就是依照一定的模式或方式把一些比特打掉，从比特序列中移除。
示例性地，解速率匹配的操作与速率匹配的操作相反，将重复或打掉的比特位置识别出来，以获得正确的原始信息。对于重复需要去掉重复的比特。对于打孔，接收机可以将确定的被打掉的比特位置零，然后与未打掉的比特位的软信息一起送入译码器进行处理。
2、连续传输
连续传输是指通信设备以不间断地方式发送数据的方式。
在一个示例中，连续传输可以是通信设备对一个相同的传输块(transport block，TB)在时域上的连续传输。
在另一示例中，连续传输可以是通信设备对多个TB在时域上的连续传输。
多个TB在时域上的连续传输可以是同一个TB以相邻的方式在做连续传输，也可以是不同TB以相邻的方式在做连续传输，本申请对此不做限制。
当多个TB在传输的过程中，发生了发送主体的切换，或者通信设备的发送有中断，则可以认为不是连续传输即非连续传输。
3、保护间隔(Guard period，GP)符号
GP符号指空符号或保护符号(guard symbol)。可选地，GP符号可用于做收发转换、波束扫描、射频或天线的切换等。GP符号也可以称之为GAP符号。
例如，下文方法200中所述的GP符号可以是第一通信设备不用于传输第一消息的符号。又例如，下文方法200中所述的GP符号可以是第一通信设备不用于传输传输块的符号。
4、信道占用时间(channel occupancy time，COT)
COT是指终端设备在执行信道接入过程后在一个或者多个信道上的传输。如果某个终端设备通过先听后说(listen before talk，LBT)获得信道使用权，终端设备可在一段时间内占用该信道，该段时间可被称作COT。COT可以是一个时间概念，也可以是一个资源的概念。对于侧行传输而言，可以指侧行传输的时间或侧行传输所占的时频资源。
在实际通信系统中，终端设备有可能会发生移动、或者信号在同一时域资源上存在并行用户数量变化的情况。故，在无线通信系统中，尤其是侧行通信系统中，接收机在每个时隙上接收信号，其能量会存在较大的变化与波动。而为了处理这种较大的信号波动，通常在传输时隙开始的第一个符号，发射机需要用此符号，作为接收机的增益控制的符号。
在第三代合作伙伴计划(3rd generation partnership project，3GPP)定义的SL的通信技术中，在一个时隙的14个符号上，时隙开始的第一个符号用作自动增益控制。同样地，为了支持时隙之间的收发转换，时隙的最后一个符号用于保护间隔。如图2所示，该时隙包括14个符号，即符号编号为0-13的符号，该时隙的第一个符号(编号为0的符号)用于自动增益控制(automatic gain control，AGC)，该时隙的最后一个符号(编号为13的符号)用于保护间隔(Guard period，GP)。这样，时隙上的第二个符号(编号为1的符号)至倒数第二个符号(编号为12的符号)都可以用于传输物理侧行链路共享信道(physical sidelink shared channel，PSSCH)。
在3GPPR16定义的SL的通信技术中，时隙上还可以包括物理侧行链路反馈信道(physical sidelink feedback channel，PSFCH)。如图3所示，除第一个符号(编号为0的符号)用作AGC以及最后一个符号(编号为13的符号)用作GP之外，第十二个符号(编号为11的符号)和第十三个符号(编号为12的符号)用来传输PSFCH。进一步地，在PSFCH之前的一个符号(编号为10的符号)为不做收发转换的空符号，用以支持PSSCH和PSFCH之间的收发转换的符号。这样，时隙上的第二个符号(编号为1的符号)至倒数第五个符号(编号为9的符号)都可以用于传输PSSCH。
进而，发射机只能在该时隙中用于传输PSSCH的符号上发送数据(如下文所述的第一消息)，在该时隙中除用于传输PSSCH符号之外的符号不发送数据。相应地，接收机也在用于传输PSSCH的符号上接收和解调数据。
在无线通信系统中，为了实现接收机的正确译码，发射机和接收机之间需要对齐时隙上不用于传输数据(如下文所述的第一消息)的符号。对于如图2所示的时隙，发射机和接收机需对齐时隙上的 第一个符号和最后一个符号不用于传输数据。对于如图3所示的时隙，发射机和接收机需对齐时隙上的第一个符号、第十一个符号至最后一个符号不用于传输数据。
可见，在没有PSFCH的SL传输中，由于每个时隙都是独立调度的，因此每个时隙的第一个符号需要用于作AGC符号，最后一个符号需要用来做收发转换的符号。因此，发射机和接收机始终在时隙的第一个符号和最后一个符号上固定不传输数据。然而，其并未考虑在更灵活的传输时可以对时隙内第一个符号/最后一个符号进行改进，以进一步提升传输效率。
此外，在有PSFCH的SL传输中，由于PSFCH资源是系统级配置的，即所有的设备只能使用这部分资源发送或接收PSFCH，而不能用作其它传输。因此，发射机和接收机始终在时隙的第一个符号、第十一个符号和最后一个符号上固定不传输数据。然而，其并未考虑在更灵活的传输时，可以对PSFCH的实际发送方式进行改进，以进一步的优化传输。
这样，无论时隙上有无PSFCH，上述方案都未从该时隙实际传输的情况出发，确定哪些符号可以传输数据，哪些符号不能传输数据，造成数据的传输效率较低。现有技术并未考虑在更灵活的传输时针对时隙收尾符号的进一步的效率提升。
在无线通信系统中，为了实现接收机的正确译码，发射机和接收机之间需要对齐时隙上不用于传输数据(如下文所述的第一消息)的符号。对于如图2所示的时隙，发射机和接收机需对齐时隙上的第一个符号和最后一个符号不用于传输数据。对于如图3所示的时隙，发射机和接收机需对齐时隙上的第一个符号、第十一个符号至最后一个符号不用于传输数据。
可见，在没有PSFCH的SL传输中，由于每个时隙都是独立调度的，因此每个时隙的第一个符号必须用于作AGC符号，最后一个符号必须用来做收发转换的符号。因此，发射机和接收机始终在时隙的第一个符号和最后一个符号上固定不传输数据。
此外，在有PSFCH的SL传输中，由于PSFCH资源是系统级配置的，即所有的设备只能使用这部分资源发送或接收PSFCH，而不能用作它传输。因此，发射机和接收机始终在时隙的第一个符号、第十一个符号和最后一个符号上固定不传输数据。
这样，无论时隙上有无PSFCH，上述方案都未从该时隙实际传输的情况出发，确定哪些符号可以传输数据，哪些符号不能传输数据，造成数据的传输效率较低。现有技术并未考虑在更灵活的传输时针对时隙收尾符号的进一步的效率提升。
鉴于此，本申请实施例提供了一种通信方法，该通信方法可以从时隙实际传输的情况出发，动态地确定哪些符号可以传输数据，哪些符号不能传输数据，然后相应地使用所有可传输数据的符号，进而提高数据的传输效率。
下文结合附图详细说明本申请实施例提供的通信方法。
本申请实施例可应用于包括第一通信设备和第二通信设备的无线通信系统中。
在一个示例中，第一通信设备为网络设备，第二通信设备为终端设备。
例如，第一通信设备可以为图1中所示的网络设备110，第二通信设备可以为图1中所示的终端设备120或终端设备130。
在另一个示例中，第一通信设备和第二通信设备均为终端设备。
例如，第一通信设备可以为图1中所示的终端设备120，第二通信设备可以为图1中所示的终端设备130。
又例如，该第一通信设备可以为图1中所示的终端设备130，第二通信设备可以为图1中所示的终端设备120。
图4为本申请实施例提供的一例通信方法200的示意性流程图。如图4所示，该通信方法200包括S210和S220。
S210，第一通信设备确定第一符号集合。
第一符号集合可以包括一个或多个符号，第一符号集合也可以为空集，本申请实施例对第一符号集合包括的符号数量不作限定。
示例性地，第一符号集合还可以称为时隙中需要做速率匹配的符号的集合。
本申请实施例对时隙的类型以及时隙包括的符号数不作限定。
示例性地，时隙的符号数为S，S为整数，且6≤S≤14。
在一个示例中，时隙可以是完整的时隙。
例如，若该完整的时隙包括14个符号，上述M最大可以取13。若该完整的时隙包括12个符号，上述M最大可以取11。
在另一个示例中，时隙可以是部分时隙。
例如，若该部分时隙可以包括7个符号，上述M最大可以取6。若该部分时隙包括6个符号，上述M最大可以取5。
在又一个示例中，时隙可以是迷你时隙(mini-slot)。
可选地，该迷你时隙包括的符号数为整数。
本申请实施例对迷你时隙包括的符号数的取值不作限定。
可选地，迷你时隙包括的符号数可以小于完整时隙包括的符号数。例如，迷你时隙包括的符号数可以是1，2，3，4，6或7。
例如，若该迷你时隙包括4个符号，上述M最大可以取3。
第一符号集合存在三种情况，情况A：第一符号集合仅包括时隙中倒数第M个符号至倒数第二个符号中的至少一个符号；情况B：第一符号集合除了包括时隙中倒数第M个符号至倒数第二个符号中的至少一个符号外，还可以包括时隙的第一个符号和/或最后一个符号；情况C：第一符号集合仅包括时隙的第一个符号和/或最后一个符号。
本申请实施例对倒数第M个符号至倒数第二个符号的用途不作限定。例如，该倒数第M个符号至倒数第二个符号可以用于传输反馈信道、传输同步信号、控制信令等。
示例性地，M的取值为信令配置的或预定义的。
可选地，M的取值可以与时隙中PSFCH传输占用的符号数，一起做预定义。例如，PSFCH传输占用1个符号时，M的值可以为2、3或4。又例如，PSFCH传输占用2个符号时，M的值可以为2、3、4或5。
可选地，M的取值也可以与时隙中PSFCH传输占用的符号数，一起配置在资源池上。
关于时隙中PSFCH传输占用的符号数下文再作说明，这里先不赘述。
示例性地，若第一通信设备和第二通信设备均为终端设备，倒数第M个符号至倒数第二个符号包括与PSFCH对应的符号。
与PSFCH对应的符号可以理解为与传输PSFCH相关的符号，例如，PSFCH对应的符号可以包括PSFCH传输占用的符号，或者，PSFCH对应的符号可以包括PSFCH传输占用的符号以及PSFCH传输占用的符号之前的一个或两个符号。
需要说明的是，若第一通信设备为网络设备，第二通信设备为终端设备，倒数第M个符号至倒数第二个符号包括与反馈信道(如物理上行链路控制信道(physical uplink control channel，PUCCH))对应的符号。为了方便理解，下文均以倒数第M个符号至倒数第二个符号为与PSFCH对应的符号为例进行描述。应理解，倒数第M个符号不应是第一个符号，也就是说，该M最大的取值为小于该时隙总的符号数的值。例如，若时隙包括14个符号，M最大的取值为小于14的值，即M最大的取值为13。又例如，若时隙包括7个符号，M最大的取值为小于7的值，即M最大的取值为6。
下面，先对第一符号集合包括时隙中倒数第M个符号至倒数第二个符号中的至少一个符号的情况下，第一通信设备如何确定第一符号集合进行描述。
在一个示例中，第一通信设备根据第一参考信息，确定第一符号集合。其中，第一参考信息用于指示PSFCH的传输方向。
需要说明的是，PSFCH的传输方向还可以称为PSFCH的反馈方向、或者PSFCH资源是用于发送还是接收。以及，本申请均以PSFCH的传输方向为发送为例进行说明。
PSFCH的传输方向包括两种情况，情况1：PSFCH的传输方向为接收；情况2，PSFCH的传输方向为发送。下面分别以情况1和情况2为例，对S210进行详细介绍。
情况1，PSFCH的传输方向为接收
具体的，由于PSFCH的传输方向为接收，那么，PSSCH的发送符号与PSFCH的接收符号之间需要有一个符号用于收发转换，也需要有一个符号用于做PSFCH的AGC。因此，第一符号集合包括PSFCH传输占用的符号之前的两个符号和PSFCH传输占用的符号。如，PSFCH传输占用的符号数为(M-3)，且M大于或等于4。此时，PSFCH传输占用的符号之前的两个符号和PSFCH传输占用的符号即为与PSFCH对应的符号。
示例性地，PSFCH传输占用的符号数可以为信令配置、预定义的、或配置在资源池上。
例如，PSFCH传输占用的符号数为1，2，3或4。
可选地，在一个示例中，PSFCH传输占用的符号数可以是与PSFCH的传输格式(format)一起配置的。示例性地，不同的PSFCH信道格式(format)，可以配置不同的PSFCH传输占用的符号数。例如，PSFCH format0对应的PSFCH传输占用的符号数为1或2，PSFCH format 1对应的PSFCH传输占用的符号数可以配置为1，2或4。
在一个示例中，PSFCH传输占用的符号，不包括支持PSFCH的AGC符号。那么，PSFCH传输占用的符号数即为实际传输PSFCH需要的符号数。
在另一个示例中，如图5所示，PSFCH传输占用的符号，包括支持PSFCH的AGC符号。此时，AGC符号为PSFCH实际传输的第一个符号(如图5中所示的编号为0的符号)复制后得到的符号，且该AGC符号作为PSFCH传输占用的第一个符号。这样，PSFCH传输占用的符号数包括：实际传输PSFCH需要的符号及AGC符号的数量。
需要说明的是，下文中均以PSFCH传输占用的符号不包括支持PSFCH的AGC符号为例进行说明。
例如，如图6中的(a)所示，当M＝4，PSFCH传输占用的符号数为1，第一符号集合包括时隙上倒数第四个符号至倒数第二个符号，也就是说，第一符号集合包括时隙上第十一个符号(图6中的(a)所示编号为10的符号)至第十三个符号(图6中的(a)所示编号为12的符号)。
又例如，如图6中的(b)所示，当M＝5，PSFCH传输占用的符号数为2，第一符号集合包括时隙上倒数第五个符号至倒数第二个符号，也就是说，第一符号集合包括时隙上第十个符号(图6中的(b)所示编号为9的符号)至第十三个符号(图6中的(b)所示编号为12的符号)。
情况2，PSFCH的传输方向为发送
在一个示例中，若PSFCH的传输方向为发送，第一通信设备还需要进一步根据第二信息，确定第一符号集合。
其中，第二信息用于指示PSFCH是否频分复用。PSFCH是否频分复用包括两种情况，情况21：PSFCH是频分复用；情况22，PSFCH未频分复用。下面分别以情况21和情况22为例，对S210进行详细介绍。
情况21，PSFCH的传输方向为发送，且PSFCH是频分复用
由于PSFCH的传输方向为发送，PSSCH的发送符号与PSFCH的发送符号之间不需要用于收发转换的符号。此外，由于PSFCH是频分复用，即多个终端设备使用PSFCH。此时，使用PSFCH的用户数量多于使用PSSCH的用户数量。此时，在PSSCH与PSFCH之间需要有一个符号用于做PSFCH的AGC，以便处理这种接收功率的变化。因此，第一符号集合包括PSFCH传输占用的符号之前的一个符号和PSFCH传输占用的符号，PSFCH传输占用的符号数为(M-2)，M大于或等于3。此时，PSFCH传输占用的符号之前的一个符号和PSFCH传输占用的符号为与PSFCH对应的符号。
例如，如图6中的(c)所示，当M＝3，PSFCH传输占用的符号数为1，第一符号集合包括时隙上倒数第三个符号和倒数第二个符号，也就是说，第一符号集合包括时隙上第十二个符号(图6中的(c)所示编号为11的符号)和第十三个符号(图6中的(c)所示编号为12的符号)。
又例如，如图6中的(d)所示，当M＝4，PSFCH传输占用的符号数为2，第一符号集合包括时隙上倒数第四个符号值倒数第二个符号，也就是说，第一符号集合包括时隙上第十一个符号(图6中的(d)所示编号为10的符号)至第十三个符号(图6中的(d)所示编号为12的符号)。
需要说明的是，图6中所示的PSFCH传输占用的符号在时隙中的位置仅为示例，其不应对本申请构成限制。
情况22，PSFCH的传输方向为发送，且PSFCH未频分复用
由于PSFCH的传输方向为发送，PSSCH的发送符号与PSFCH的发送符号之间不需要用于收发转换的符号。此外，由于PSFCH未频分复用，即一个终端设备使用PSFCH。此时，使用PSFCH的用户数量等于使用PSSCH的用户数量。进一步可选地，可进一步根据使用PSFCH的用户和使用PSSCH的用户是否相同，来确定，在PSSCH与PSFCH之间是否需要有一个符号用于AGC。
可选地，若第二信息用于指示PSFCH未频分复用，第二参数信息还用于可以指示使用PSFCH的用户和使用PSSCH的用户是否相同。
若使用PSFCH的用户和使用PSSCH的用户相同，此时，在PSSCH与PSFCH之间不需要有一个 符号用于做PSFCH的AGC。因此，第一符号集合包括PSFCH传输占用的符号，PSFCH传输占用的符号数为(M-1)，M大于或等于2。此时，PSFCH传输占用的符号为与PSFCH对应的符号。
例如，如图6中的(e)所示，当M＝2，PSFCH传输占用的符号数为1，第一符号集合包括时隙上倒数第二个符号，也就是说，第一符号集合包括时隙上第十三个符号(图6中的(e)所示编号为12的符号)。
又例如，如图6中的(f)所示，当M＝3，PSFCH传输占用的符号数为2，第一符号集合包括时隙上倒数第三个符号和倒数第二个符号，也就是说，第一符号集合包括时隙上第十二个符号(图6中的(f)所示编号为11的符号)和第十三个符号(图6中的(f)所示编号为12的符号)。
若使用PSFCH的用户和使用PSSCH的用户不相同，此时，在PSSCH与PSFCH之间可能需要有一个符号用于AGC。因此，第一符号集合包括PSFCH传输占用的符号之前的一个符号和PSFCH传输占用的符号，PSFCH传输占用的符号数为(M-2)，M大于或等于3。此时，PPSFCH传输占用的符号之前的一个符号和PSFCH传输占用的符号为与PSFCH对应的符号。
在另一个示例中，若PSFCH的传输方向为发送，第一通信设备还需要进一步根据第三信息，确定第一符号集合。
其中，第三信息用于指示PSFCH的播类型。示例性地，PSFCH的播类型包括两种情况，情况21’：PSFCH的播类型为组播；情况22’，PSFCH的播类型为单播。
在情况21’中，S210的具体过程和上文情况21中的S210的具体过程类似，只需将情况21中的PSFCH是频分复用替换为PSFCH的播类型为组播即可，这里不再对情况21’中S210的具体过程进行赘述。
在情况22’中，S210的具体过程和上文情况22中的S210的具体过程类似，只需将情况22中的PSFCH未频分复用替换为PSFCH的播类型为单播即可，这里不再对情况22’中S210的具体过程进行赘述。
可选地，第三信息指示播类型为单播时，指示当前的第一通信设备与第二通信设备之间的链路为单播链路。单播意味着，在一个时隙上，PSSCH与PSFCH都只用于一个用户的传输。即没有频分复用。
需要说明的是，本申请中，时隙的最后一个符号可以是GP也可以不是GP，这只是两种不同的描述术语，并不构成对于时隙上的传输或速率匹配构成限制。
可选地，若时隙的最后一个符号是GP，则S210中所述的第一符号集合所包括的符号未考虑时隙的最后一个符号。
可选地，若时隙的最后一个符号不是GP符号，S210中所述的第一符号集合所包括的符号需要考虑时隙的最后一个符号。也就是说，S210中所述的第一符号集合应该包括时隙中倒数第M个符号至倒数第一个符号中的至少一个符号。
以上，对第一符号集合包括时隙中倒数第M个符号至倒数第二个符号中的至少一个符号的情况下，第一通信设备如何确定第一符号集合进行了描述。下面，对第一符号集合包括第一个符号和/或最后一个符号的情况下，第一通信设备如何确定第一符号集合进行了描述。
在一个示例中，第一通信设备根据第五信息，确定第一符号集合是否包括第一个符号。
其中，第五信息用于指示该时隙的第一个符号前是否存在循环前缀扩展(cyclic prefix extension，CPE)传输的信号。
若该时隙的第一个符号前不存在CPE传输的信号，则该第一通信设备需要使用该时隙的第一个符号用于AGC，故第一符号集合包括第一个符号。
若该时隙的第一个符号前存在CPE传输的信号，则该第一通信设备可以使用该CPE信号来作AGC，因此该第一通信设备可以不用使用该时隙的第一个符号用于AGC，则第一符号集合不包括第一个符号。
可选地，当该时隙的第一个符号前存在CPE传输的信号时，且CPE信号的时长大于或等于预设的时长时，则该第一通信设备不需要使用该时隙的第一个符号用于AGC，故第一符号集合不包括第一个符号。
可选地，当该时隙的第一个符号前存在CPE传输的信号时，且CPE信号的小于预设的时长时，则该第一通信设备需要使用该时隙的第一个符号用于AGC，故第一符号集合包括第一个符号。
在另一个示例中，第一通信设备根据第六信息，确定第一符号集合是否包括第一个符号。
其中，第六信息用于指示该时隙在时域上是否连续传输。
应理解，该时隙在时域上是否连续传输包括该时隙与前一个时隙在时域上是否连续以及该时隙与后一个时隙在时域上是否连续。其中，时隙与前一个时隙是两个相邻的时隙，且时隙与后一个时隙是两个相邻的时隙。
若该时隙与前一个时隙在时域上连续传输，故该时隙的第一个符号可以继续传输第一消息，因此该第一通信设备可以不用使用该时隙的第一个符号用于AGC(亦即使用当前时隙的前一个时隙上的符号用作AGC)，则第一符号集合不包括第一个符号。
若该时隙与前一个时隙在时域上非连续传输，则该第一通信设备需要使用该时隙的第一个符号用于AGC，故第一符号集合包括第一个符号。
示例性地，第一通信设备根据第六信息，确定第一符号集合是否包括最后一个符号。
若该时隙与后一个时隙在时域上连续传输，故该时隙的最后一个符号可以继续传输第一消息，因此该第一通信设备可以不用使用该时隙的最后一个符号用于GP(亦即不需要从发送状态切换到接收状态)，则第一符号集合不包括最后一个符号。
若该时隙与后一个时隙在时域上非连续传输，则该第一通信设备需要使用该时隙的最后一个符号用于GP，故第一符号集合包括最后一个符号。
示例性地，S210中所述的第一消息包括数据和/或控制信息。
在一个示例中，若第一通信设备和第二通信设备均为终端设备，控制信息包括SCI、媒体接入控制控制元(medium access control control element，MAC CE)信息、PC5 RRC信息；数据包括侧行链路上的数据。
在另一个示例中，若第一通信设备为网络设备，第二通信设备为终端设备，控制信息包括上行控制信息和/或下行控制信息；数据包括蜂窝链路上的数据。
S220，第一通信设备向第二通信设备发送第一指示信息。相应地，第二通信设备接收第一通信设备发送的第一指示信息。
其中，第一指示信息用于指示第一符号集合。
下面，以情况A、情况B和情况C为例，对第一通信设备如何通过第一指示信息指示第一符号集合进行详细说明。
情况A，第一符号集合仅包括倒数第M个符号至倒数第二个符号中的至少一个符号
下面，以方式1至方式3为例，对情况A中第一通信设备如何通过第一指示信息指示第一符号集合进行详细说明。
方式1，第一通信设备通过第一指示信息直接指示第一符号集合
示例性地，第一通信设备可以通过第一指示信息中的第一字段来直接指示第一符号集合。
示例性地，第一指示信息可以是SCI。该第一字段可以是SCI中新增的字段。
本申请实施例对该第一字段使用的比特的取值不作限定。
在一个示例中，第一字段可以使用2比特指示第一符号集合。
例如，若第一字段指示00，则可认为第一符合集合为空集，也就是说，此时不需要从倒数第M个符号至倒数第二个符号中确定第一符号集合包括的符号；若第一字段指示01，则可以认为第一符号集合包括PSFCH传输占用的符号；若第一字段指示10，则可认为第一符号集合包括PSFCH传输占用的符号之前的一个符号和PSFCH传输占用的符号；若第一字段指示11，则可认为第一符号集合包括PSFCH传输占用的符号之前的两个符号和PSFCH传输占用的符号。
方式2，第一通信设备通过第一指示信息间接指示第一符号集合
示例性地，第一指示信息包括第一信息、第二信息和第三信息，第一信息、第二信息和第三信息中的至少一项用于指示第一符号集合。其中，第一信息用于指示发送或接收PSFCH；第二信息用于指示PSFCH是否频分复用；第三信息用于指示PSFCH的播类型。
可选地，在一些实施例中，第二信息用于指示PSFCH是否频分复用可替换为：第二信息用于指示PSFCH是否频分复用和/或是否码分复用。下文为了方便描述，均以第二信息用于指示PSFCH是否频分复用为例进行说明。
示例性地，第一指示信息可以是调度或指示PSSCH的SCI、或COT指示信息。其中，COT指示信息可用于指示第二通信设备在COT上，按指示的资源进行传输。这样，第一信息、第二信息、和/ 或第三信息可携带在调度或指示PSSCH的SCI、或COT指示信息中。
需要说明的是，第一信息、第二信息和/或第三信息也可以配置在资源池中。这样，第一通信设备可以不用执行S220，即不用向第二通信设备发送第一指示信息，第二通信设备直接从资源池中便可获取第一信息、第二信息和/或第三信息。
示例性地，第一信息可以包括第二字段，第二字段用于指示发送或接收PSFCH。
示例性地，第二字段可以使用1个比特指示发送或接收PSFCH。
例如，若第二字段指示0，则可以认为发送PSFCH。若第二字段指示1，则可以认为接收PSFCH。
示例性地，第二信息可以指示PSFCH资源是单个设备使用的，或多个设备以频分复用或码分复用的方式使用的。
示例性地，第二信息可以包括第三字段，第三字段用于指示PSFCH是否频分复用。
示例性地，第三字段可以使用1个比特指示PSFCH是否频分复用。
例如，若第三字段指示0，则可以认为PSFCH未频分复用。若第三字段指示1，则可以认为PSFCH频分复用。
示例性地，第三信息可以包括第四字段，第四字段用于指示PSFCH的播类型(cast type)。
示例性地，第四字段可以使用1或2比特指示PSFCH的播类型。
例如，在第四字段使用1比特指示PSFCH的播类型中，若第四字段指示0，可认为PSFCH的播类型为单播；若第四字段指示1，可认为PSFCH的播类型为组播。
方式3，第一通信设备通过第一指示信息中的多个信息联合指示第一符号集合
示例性地，第一指示信息包括第一信息、第二信息、第三信息和第四信息，第一信息、第二信息和第三信息中的至少一项与第四信息用于指示第一符号集合。其中，第一信息用于指示发送或接收
PSFCH；第二信息用于指示PSFCH是否频分复用；第三信息用于指示PSFCH的播类型。
需要说明的是，第一信息、第二信息和/或第三信息也可以配置在资源池中。这样，第一指示信息中可以仅包括第四信息，不包括第一信息、第二信息和/或第三信息，第二通信设备直接从资源池中便可获取第一信息、第二信息和/或第三信息。此时，示例性地，第一指示信息可以是SCI。该第四信息所指示的内容可以是通过SCI中新增的字段指示。
示例性地，第一信息可以包括第二字段，第二字段用于指示发送或接收PSFCH。第二信息可以包括第三字段，第三字段用于指示PSFCH是否频分复用。第三信息可以包括第四字段，第四字段用于指示PSFCH的播类型。第四信息可以包括第五字段。
示例性地，第二字段可以使用1比特、第三字段可以使用1比特、第四字段可以使用1比特中的至少一项，以及第五字段可以使用1比特联合指示第一符号集合。
例如，在第四信息和第一信息用于指示第一符号集合的示例中，若第五字段指示0，第二字段指示0，则可认为第一符合集合为空集，也就是说，此时不需要从倒数第M个符号至倒数第二个符号中确定第一符号集合包括的符号；若第五字段指示0，第二字段指示1，则可以认为第一符号集合包括PSFCH传输占用的符号；若第五字段指示1，第二字段指示0，则可认为第一符号集合包括PSFCH传输占用的符号之前的一个符号和PSFCH传输占用的符号；若第五字段指示1，第二字段指示1，则可认为第一符号集合包括PSFCH传输占用的符号之前的两个符号和PSFCH传输占用的符号。
情况B，第一符号集合包括倒数第M个符号至倒数第二个符号中的至少一个符号，以及第一个符号和/或最后一个符号
下面，以方式1’至方式4’为例，对情况B中第一通信设备如何通过第一指示信息指示第一符号集合进行详细说明。
方式1’，第一通信设备通过第一指示信息直接指示第一符号集合
示例性地，第一通信设备可以通过第一指示信息中的第一字段来直接指示第一符号集合。
本申请实施例对该第一字段使用的比特的取值不作限定。
在一个示例中，第一字段使用4比特指示第一符号集合。例如，如表1示出了一例第一字段使用4比特指示第一符号集合。
表1

示例性地，表1以及下文所述的表2至表4中所述的第一个符号*，是该时隙为COT的第一个时隙，或者，该时隙的第一个符号前存在CPE传输的信号时，且CPE信号的小于预设的时长时。
需要说明的是，本申请中涉及的预留值可以理解为字段使用的比特的取值未被使用或被预留下来的状态或码点。
例如，若PSFCH传输占用的符号为时隙的第12个符号，且时隙的符号数为14。那么：
在第一字段指示0000的情况下，时隙中每个符号的用途如图7所示。
在第一字段指示0001的情况下，时隙中每个符号的用途如图8所示。
在第一字段指示0010的情况下，时隙中每个符号的用途如图9所示。
在第一字段指示0011的情况下，时隙中每个符号的用途如图10所示。
在第一字段指示0100的情况下，时隙中每个符号的用途如图11所示。
在第一字段指示0101的情况下，时隙中每个符号的用途如图12所示。
在第一字段指示0110的情况下，时隙中每个符号的用途如图13所示。
在第一字段指示0111的情况下，时隙中每个符号的用途如图14所示。
在第一字段指示1000的情况下，时隙中每个符号的用途如图15所示。
在第一字段指示1011的情况下，时隙中每个符号的用途如图16所示。
在第一字段指示1100的情况下，时隙中每个符号的用途如图17所示。
在第一字段指示1101的情况下，时隙中每个符号的用途如图18所示。
在第一字段指示1110的情况下，时隙中每个符号的用途如图19所示。
在第一字段指示0111的情况下，时隙中每个符号的用途如图20所示。
例如，若PSFCH传输占用的符号为时隙的第12个符号，且时隙的符号数为7。那么，
在第一字段指示0000的情况下，时隙中每个符号的用途如图21所示。
在第一字段指示0001的情况下，时隙中每个符号的用途如图22所示。
在第一字段指示0010的情况下，时隙中每个符号的用途如图23所示。
在第一字段指示0011的情况下，时隙中每个符号的用途如图24所示。
在第一字段指示0100的情况下，时隙中每个符号的用途如图25所示。
在第一字段指示0101的情况下，时隙中每个符号的用途如图26所示。
在第一字段指示0110的情况下，时隙中每个符号的用途如图27所示。
在第一字段指示0111的情况下，时隙中每个符号的用途如图28所示。
在第一字段指示1000的情况下，时隙中每个符号的用途如图29所示。
在第一字段指示1011的情况下，时隙中每个符号的用途如图30所示。
在第一字段指示1100的情况下，时隙中每个符号的用途如图31所示。
在第一字段指示1101的情况下，时隙中每个符号的用途如图32所示。
在第一字段指示1110的情况下，时隙中每个符号的用途如图33所示。
在第一字段指示0111的情况下，时隙中每个符号的用途如图34所示。
方式2’，第一通信设备通过第一指示信息间接指示第一符号集合
示例性地，第一指示信息包括第一信息、第二信息、第三信息、第五信息和第六信息，第五信息或第六信息、与第一信息、第二信息和第三信息中的至少一项用于指示第一符号集合。其中，第一信息用于指示发送或接收PSFCH；第二信息用于指示PSFCH是否频分复用；第三信息用于指示PSFCH的播类型；第五信息用于指示时隙的第一个符号前是否存在CPE传输的信号；第六信息用于指示时隙在时域上是否连续传输。
示例性地，第一信息、第二信息、和/或第三信息可携带在调度或指示PSSCH的SCI、或COT指示信息中。
示例性地，第五信息可携带在调度或指示当前传输的SCI、COT指示信息、MAC CE或PC5 RRC中。
示例性地，第六信息可携带在调度或指示当前传输的SCI、COT指示信息、MAC CE或PC5 RRC中。
需要说明的是，第一信息、第二信息、第三信息、第五信息和/或第六信息也可以配置在资源池中。这样，第一通信设备可以不用执行S220，即不用向第二通信设备发送第一指示信息，第二通信设备直接从资源池中便可获取第一信息、第二信息、第三信息、第五信息和/或第六信息。
在一个示例中，第一信息可以包括第二字段，第二字段用于指示发送或接收PSFCH。第二信息可以包括第三字段，第三字段用于指示PSFCH是否频分复用。第三信息可以包括第四字段，第四字段用于指示PSFCH的播类型。第五信息可以包括第六字段，第六字段用于指示时隙的第一个符号前是否存在CPE传输的信号。第六信息可以包括第七字段，第七字段用于指示时隙在时域上是否连续传输。
示例性地，第六字段可以使用1比特或第六字段使用的1个比特、以及第二字段可以使用1比特、第三字段可以使用1比特、第四字段可以使用1比特中的至少一项联合指示第一符号集合。例如，如表2示出了一例第六字段使用1比特、第二字段使用1比特、第三字段使用1比特、以及第四字段使用1比特联合指示第一符号集合。
表2

方式3’，第一通信设备通过第一指示信息中的多个信息联合指示第一符号集合
示例性地，第一指示信息包括第一信息、第二信息、第三信息、第五信息、第六信息、和第七信息，第七信息与第一信息、第二信息、第三信息、第五信息和第六信息中的至少一项用于指示第一符号集合。其中，第一信息用于指示发送或接收PSFCH；第二信息用于指示PSFCH是否频分复用；第三信息用于指示PSFCH的播类型；第五信息用于指示时隙的第一个符号前是否存在CPE传输的信号；第六信息用于指示时隙在时域上是否连续传输。
需要说明的是，第一信息、第二信息、第三信息、第五信息和/或第六信息也可以配置在资源池中。这样，第一指示信息中可以仅包括第七信息，不包括第一信息、第二信息、第三信息、第五信息和/或第六信息，第二通信设备直接从资源池中便可获取第一信息、第二信息、第三信息、第五信息和/或第六信息。此时，示例性地，第一指示信息可以是SCI。该第七信息所指示的内容可以是通过SCI中新增的字段指示。
示例性地，第一信息可以包括第二字段，第二字段用于指示发送或接收PSFCH。第二信息可以包括第三字段，第三字段用于指示PSFCH是否频分复用。第三信息可以包括第四字段，第四字段用于指示PSFCH的播类型。第五信息可以包括第六字段，第六字段用于指示时隙的第一个符号前是否存在CPE传输的信号。第六信息可以包括第七字段，第七字段用于指示时隙在时域上是否连续传输。第七信息包括第八字段。
在一个示例中，第八字段可以使用2比特，以及第二字段可以使用1比特、第三字段可以使用1比特、第四字段可以使用1比特、第六字段可以使用1比特和第七字段可以使用1比特中的至少一项联合指示第一符号集合。
例如，如表3示出了一例第八字段使用2比特、第六字段使用1比特和第七字段使用1比特联合指示第一符号集合。
表3

又例如，如表4示出了一例第八字段使用2比特、第六字段使用1比特、第七字段使用1比特和第三字段使用1比特联合指示第一符号集合。
表4
方式4’，第一通信设备通过第一指示信息按照符号区域单独指示第一符号集合
示例性地，第一指示信息包括第八信息，第一指示信息还包括第九信息和/或第十信息。其中，第八信息用于指示倒数第M个符号至倒数第二个符号中第一消息传输不占用的符号；第九信息用于指示第一个符号是否是第一消息传输不占用的符号；第十信息用于指示最后一个符号是否是第一消息传输 不占用的符号。
下面，以方式4a1’、方式4a2’和方式4a3’为例，对方式4’中第一通信设备如何通过第八信息指示倒数第M个符号至倒数第二个符号中第一消息传输不占用的符号进行详细说明。
方式4a1’，第八信息直接指示倒数第M个符号至倒数第二个符号中第一消息传输不占用的符号。
示例性地，第八信息包括第九字段，第九字段用于指示倒数第M个符号至倒数第二个符号中第一消息传输不占用的符号。
示例性地，第一指示信息可以是SCI。该第九字段可以是SCI中新增的字段。本申请实施例对该第九字段使用的比特的取值不作限定。
在一个示例中，第九字段可以使用2比特指示第一符号集合。
例如，若第九字段指示00，则可认为第一符合集合为空集，也就是说，此时不需要从倒数第M个符号至倒数第二个符号中确定第一符号集合包括的符号；若第九字段指示01，则可以认为第一符号集合包括PSFCH传输占用的符号；若第九字段指示10，则可认为第一符号集合包括PSFCH传输占用的符号之前的一个符号和PSFCH传输占用的符号；若第九字段指示11，则可认为第一符号集合包括PSFCH传输占用的符号之前的两个符号和PSFCH传输占用的符号。
方式4a2’，第八信息间接指示倒数第M个符号至倒数第二个符号中第一消息传输不占用的符号。
示例性地，第八信息包括第一信息、第二信息和第三信息，第一信息、第二信息和第三信息中的至少一项用于指示倒数第M个符号至倒数第二个符号中第一消息传输不占用的符号；其中，第一信息用于指示发送或接收PSFCH；第二信息用于指示PSFCH是否频分复用；第三信息用于指示PSFCH的播类型。
关于第一信息、第二信息和第三信息中的至少一项如何指示倒数第M个符号至倒数第二个符号中第一消息传输不占用的符号的描述参考上文方式2的相关描述，这里不再赘述。
需要说明的是，第一信息、第二信息和/或第三信息也可以配置在资源池中。这样，第一指示信息中可以不包括第八信息，第二通信设备直接从资源池中便可获取第八信息，即获取第一信息、第二信息和/或第三信息。
方式4a3’，第八信息通过多个信息联合指示倒数第M个符号至倒数第二个符号中第一消息传输不占用的符号。
示例性地，第八信息包括第一信息、第二信息、第三信息和第四信息，第四信息与第一信息、第二信息或第三信息中的至少一项用于指示倒数第M个符号至倒数第二个符号中第一消息传输不占用的符号；其中，第一信息用于指示发送或接收PSFCH；第二信息用于指示PSFCH是否频分复用；第三信息用于指示PSFCH的播类型。
需要说明的是，第一信息、第二信息和/或第三信息也可以配置在资源池中。这样，第一指示信息中的第八信息可以不包括第一信息、第二信息和/或第三信息，第二通信设备直接从资源池中获取第一信息、第二信息和/或第三信息。此时，示例性地，第一指示信息可以是SCI。该第四信息所指示的内容可以是通过SCI中新增的字段指示
关于第四信息与第一信息、第二信息或第三信息中的至少一项如何指示倒数第M个符号至倒数第二个符号中第一消息传输不占用的符号的描述参考上文方式3中的相关描述，这里不再赘述。
下面，以方式4b1’和方式4b2’为例，对方式4’中第一通信设备如何通过第九信息指示第一个符号是否是第一消息传输不占用的符号进行详细说明。
方式4b1’，第九信息直接指示第一个符号是否是第一消息传输不占用的符号。
示例性地，第九信息包括第十字段，该第十字段用于指示第一个符号是否是第一消息传输不占用的符号。
示例性地，第一指示信息可以是SCI。该第十字段可以是SCI中新增的字段。
示例性地，第十字段可以使用1比特指示第一个符号是否是第一消息传输不占用的符号。
例如，若第十字段指示0，则可认为第一个符号不是第一消息传输不占用的符号，此时，第一符号集合不包括第一个符号。若第十字段指示1，则可认为第一个符号是第一消息传输不占用的符号，此时，第一符号集合包括第一个符号。
方式4b2’，第九信息间接指示第一个符号是否是第一消息传输不占用的符号。
示例性地，第九信息用于指示以下至少一项：时隙的第一个符号前是否存在CPE传输的信号、时 隙在时域上是否连续传输、冗余版本号(redundancy version number，RV)版本与重传次数。
需要说明的是，第九信息也可以配置在资源池中。这样，第一指示信息可以不包括第九信息，第二通信设备直接从资源池中便可获取第九信息。
在一个示例中，第九信息用于指示时隙的第一个符号前是否存在CPE传输的信号。
需要说明的是，第九信息也可以配置在资源池中。这样，第一指示信息中可以不包括第九信息，第二通信设备直接从资源池中获取第九信息。
示例性地，第九信息包括第十字段，该第十字段用于指示时隙的第一个符号前是否存在CPE传输的信号。
示例性地，第十字段可以使用1比特指示时隙的第一个符号前是否存在CPE传输的信号。
例如，若第十字段指示0，则可认为时隙的第一个符号前不存在CPE传输的信号，此时，第一符号集合包括第一个符号。若第十字段指示1，则可认为时隙的第一个符号前存在CPE传输的信号，此时，第一符号集合不包括第一个符号。
在另一个示例中，第九信息用于指示时隙在时域上是否连续传输。
示例性地，第九信息包括第十字段，该第十字段用于指示时隙在时域上是否连续传输。
示例性地，第十字段可以使用1比特指示时隙在时域上是否连续传输。
例如，若第十字段指示0，则可认为时隙在时域上非连续传输，此时，第一符号集合包括第一个符号。若第十字段指示1，则可认为时隙在时域上连续传输，此时，第一符号集合不包括第一个符号。
在又一个示例中，第九信息用于指示冗余版本号(redundancy version number，RV)版本和重传次数。
示例性地，第九信息可以指示：一个数据包重传时使用的RV版本的顺序为[0,2,3,1]，重传次数为N，其中N>1。
若重传次数为2，当前RV版本为0，则说明这个是重传的第一个传输，则时隙的首个符号需要用作AGC，即第一符号集合包括第一个符号。
例如重传次数为2，当前RV版本为2，则说明这个是重传的第二个传输，则时隙的首个符号不需要用作AGC，即第一符号集合不包括第一个符号。
下面，以方式4c1’和方式4c2’为例，对方式4’中第一通信设备如何通过第十信息指示最后一个符号是否是第一消息传输不占用的符号进行详细说明。
方式4c1’，第十信息直接指示最后一个符号是否是第一消息传输不占用的符号。
示例性地，第十信息包括十一字段，该十一字段用于指示最后一个符号是否是第一消息传输不占用的符号。
示例性地，第一指示信息可以是SCI。该第十一字段可以是SCI中新增的字段。
示例性地，第十一字段可以使用1比特指示最后一个符号是否是第一消息传输不占用的符号。
例如，若第十一字段指示0，则可认为最后一个符号不是第一消息传输不占用的符号，此时，第一符号集合不包括第一个符号。若第十一字段指示1，则可认为最后一个符号是第一消息传输不占用的符号，此时，第一符号集合包括第一个符号。
方式4c2’，第十信息间接指示最后一个符号是否是第一消息传输不占用的符号。
示例性地，第十信息用于指示以下至少一项：时隙在时域上是否连续传输、冗余版本号(redundancy version number，RV)版本与重传次数。
需要说明的是，第十信息也可以配置在资源池中。这样，第一指示信息可以不包括第十信息，第二通信设备直接从资源池中便可获取第十信息。
在一个示例中，第十信息用于指示时隙在时域上是否连续传输。
需要说明的是，第十信息也可以配置在资源池中。这样，第一指示信息中可以不包括第十信息，第二通信设备直接从资源池中获取第十信息。
示例性地，第十信息包括第十一字段，该第十一字段用于指示时隙在时域上是否连续传输。
示例性地，第十一字段可以使用1比特指示时隙在时域上是否连续传输。
例如，若第十一字段指示0，则可认为时隙在时域上非连续传输，此时，第一符号集合包括最后一个符号。若第十一字段指示1，则可认为时隙在时域上连续传输，此时，第一符号集合包括最后一个符号。
在另一个示例中，第十信息用于指示RV版本和重传次数。
例如，一个数据包重传时使用的RV版本的顺序为[0,2,3,1]；重传次数为N，其中N>1。
若重传次数为2，当前RV版本为0，则说明这个重传后面还有一个传输，则时隙的最后一个符号不用作GP，即第一符号集合不包括最后一个符号。
例如，重传次数为2，当前RV版本为2，则说明这个是重传的第二个传输，亦即是最后一个的重传，则时隙的最后一个符号用作GP，即第一符号集合包括最后一个符号。
情况C，第一符号集合仅包括第一个符号和/或最后一个符号
下面，以方式1”至方式3”为例，对情况A中第一通信设备如何通过第一指示信息指示第一符号集合进行详细说明。
方式1”，第一通信设备通过第一指示信息直接指示第一符号集合
示例性地，第一通信设备可以通过第一指示信息中的第一字段来直接指示第一符号集合。
本申请实施例对该第一字段使用的比特的取值不作限定。
在一个示例中，第一字段可以使用1比特指示第一符号集合。
例如，若第一字段指示0，则可认为第一符合集合为空集，也就是说，此时不需要第一个符号和/或最后一个符号中确定第一符号集合包括的符号，亦即时隙第二个符号至倒数第二个符号上的所有符号都可以用于传输；若第一字段指示1，则可以认为第一符号集合包括第一个符号或最后一个符号。
在另一个示例中，第一字段使用2比特指示第一符号集合。
例如，若第一字段指示00，则可认为第一符合集合为空集，也就是说，此时不需要第一个符号和/或最后一个符号中确定第一符号集合包括的符号，亦即时隙第二个符号至倒数第二个符号上的所有符号都可以用于传输；若第一字段指示01，则可以认为第一符号集合包括最后一个符号；若第一字段指示10，则可以认为第一符号集合包括第一个符号。若第一字段指示11，则可以认为第一符号集合包括第一个符号和最后一个符号。
方式2”，第一通信设备通过第一指示信息间接指示第一符号集合
示例性地，第一指示信息包括第五信息、第六信息和第十二信息，第五信息、第六信息和第十二信息中的至少一项用于指示第一符号集合。
需要说明的是，第五信息、第六信息和/或第十二信息也可以配置在资源池中。这样，第一通信设备可以不用执行S220，即不用向第二通信设备发送第一指示信息，第二通信设备直接从资源池中便可获取第五信息、第六信息和/或第十二信息。
其中，第五信息用于指示时隙的第一个符号前是否存在CPE传输的信号；第六信息用于指示时隙在时域上是否连续传输；第十二信息用于指示RV版本和重传次数。
示例性地，第五信息、第六信息和/或第十二信息可携带在调度或指示当前传输的SCI、COT指示信息、MAC CE或PC5 RRC中。
需要说明的是，第五信息、第六信息和/或第十二信息也可以配置在资源池中。这样，第一通信设备可以不用执行S220，即不用向第二通信设备发送第一指示信息，第二通信设备直接从资源池中便可获取第五信息和/或第六信息。
在一个示例中，第五信息可以包括第六字段，第六字段用于指示时隙的第一个符号前是否存在CPE传输的信号。
示例性地，第六字段可以使用1比特指示时隙的第一个符号前是否存在CPE传输的信号。
例如，若第六字段指示0，则可认为时隙的第一个符号前不存在CPE传输的信号，此时，第一符号集合包括第一个符号。若第六字段指示1，则可认为时隙的第一个符号前存在CPE传输的信号，此时，第一符号集合不包括第一个符号。
在一个示例中，第六信息可以包括第七字段，该第七字段用于指示时隙在时域上是否连续传输。
在一个示例中，第七字段可以使用1比特指示时隙在时域上是否连续传输。
例如，若第七字段指示0，则可认为时隙在时域上非连续传输，此时，第一符号集合包括第一个符号和最后一个符号。若第七字段指示1，则可认为时隙在时域上连续传输，此时，第一符号集合不包括第一个符号和最后一个符号。
在另一个示例中，第七字段可以使用2比特指示时隙在时域上是否连续传输。
例如，若第七字段指示00，则可认为时隙在时域上非连续传输，此时，第一符号集合包括第一个 符号和最后一个符号。若第七字段指示01，则可认为时隙与前一个时隙在时域上非连续传输，且与后一个时隙在时域上连续传输，此时，第一符号集合包括第一个符号，不包括最后一个符号。若第七字段指示10，则可认为时隙与前一个时隙在时域上连续传输，且与后一个时隙在时域上非连续传输，此时，第一符号集合不包括第一个符号，包括最后一个符号。若第七字段指示11，则可认为时隙与前一个时隙在时域上连续传输，且与后一个时隙在时域上连续传输，此时，第一符号集合不包括第一个符号和最后一个符号。
例如，第十二信息可以指示一个数据包重传时使用的RV版本的顺序为[0,2,3,1]；重传次数为N，其中N>1。
若重传次数为2，当前RV版本为0，则说明这个重传后面还有一个传输，则时隙的首个符号需要用作AGC，即第一符号集合包括第一个符号。此外，时隙的最后一个符号不用作GP，即第一符号集合不包括最后一个符号。
若重传次数为2，当前RV版本为2，则说明这个是重传的第二个传输，亦即是最后一个的重传，则时隙的首个符号不需要用作AGC，即第一符号集合不包括第一个符号。此外，时隙的最后一个符号用作GP，即第一符号集合包括最后一个符号。
方式3”，第一通信设备通过第一指示信息中的多个信息联合指示第一符号集合
示例性地，第一指示信息包括第十一信息、第五信息和第六信息，第五信息或第六信息，与第十一信息用于指示第一符号集合。其中，第五信息用于指示时隙的第一个符号前是否存在CPE传输的信号；第六信息用于指示时隙在时域上是否连续传输。
需要说明的是，第五信息和/或第六信息也可以配置在资源池中。这样，第一指示信息中可以仅包括第十一信息，不包括第五信息和/或第六信息，第二通信设备直接从资源池中便可获取第五信息和/或第六信息。
示例性地，第五信息可以包括第六字段，第六字段用于指示时隙的第一个符号前是否存在CPE传输的信号。第六信息可以包括第七字段，该第七字段用于指示时隙在时域上是否连续传输。第十一信息包括第十二字段。
在一个示例中，第十二字段可以使用1比特，以及第六字段可以使用1比特联合指示第一符号集合。
例如，若第十二字段指示0，第六字段指示0，那么，第一符号集合不包括第一符号集合和最后一个符号。若第十二字段指示0，第六字段指示1，那么，第一符号集合包括第一个符号，不包括最后一个符号。若第十二字段指示1，第六字段指示0，那么，第一符号集合不包括第一个符号，包括最后一个符号。若第十二字段指示1，第六字段指示1，那么，第一符号集合包括第一个符号和最后一个符号。
在另一个示例中，第十二字段可以使用1比特以及第七字段可以使用1比特联合指示第一符号集合。
例如，若第十二字段指示0，第七字段指示0，那么，第一符号集合不包括第一符号集合和最后一个符号。若第十二字段指示0，第七字段指示1，那么，第一符号集合包括第一个符号，不包括最后一个符号。若第十二字段指示1，第七字段指示0，那么，第一符号集合不包括第一个符号，包括最后一个符号。若第十二字段指示1，第七字段指示1，那么，第一符号集合包括第一个符号和最后一个符号。
可选地，在一些实施例中，如图35所示，方法200还包括S230，该S230在S210之后执行，该S230和S220的执行顺序本申请不作限定。
S230，第一通信设备向第二通信设备发送第一消息。
示例性地，第一通信设备根据第一符号集合和时隙占用的符号，向第二通信设备发送第一消息。
例如，第一通信设备可以从时隙占用的符号中除去第一符号集合中的符号，得到第一消息可占用的符号，然后根据第一消息可占用的符号和第一消息的大小，对第一消息进行速率匹配后，发送第一消息。
相应地，第二通信设备根据第一指示信息，接收第一通信设备发送的第一消息。
具体的，第二通信设备根据第一指示信息所指示的第一符号集合，对第一消息进行解码。
示例性地，第二通信设备根据第一符号集合和时隙占用的符号，对第一消息进行解速率匹配，进而对第一消息进行解码。
可选地，第二通信设备还可以根据时隙与前一个时隙中接收的SCI来判断，第一符号集合是否包 括第一个符号。例如，SCI中可能会携带该SCI对应的终端设备的标识。如果是同一个终端设备在前面有过SCI的调度，并且前一个时隙中无PSFCH，或者有PSFCH但PSFCH是用于发送，则时隙中的第一个符号可传输第一消息，此时第一符号集合不包括第一个符号。
为了支持终端设备在不同时隙上传输时同一个TB的合并译码，同一个数据包在不同的时隙传输时的传输块大小(transport block size，TBS)相同。当同一个TB，在不同时隙上传输，而不同时隙上可提供的传输资源数有变化时，需在发送前基于各个时隙上可用的资源来确定TBS的大小。
为了使得一个终端设备的同一个数据包在不同时隙上，传输时保持TBS不变，需要考虑这个TB实际在多个不同的时隙上传输时各个时隙上的可用资源数。这些资源数包括可用的符号数，或者可用的时频资源的数量(如可用的资源单元(resource element，RE)或物理资源块(physical resource block，PRB)的数量)。
然而，现有的方案，未从该时隙实际传输的情况出发，确定哪些符号可以传输TB，哪些符号不能传输TB，造成TB的传输效率较低。
鉴于此，本申请实施例还提供了另一种通信方法，该通信方法可以从时隙实际传输的情况出发，确定哪些符号可以传输TB，哪些符号不能传输TB，进而提高传输块的传输正确率，提升传输的效率。
下文结合附图详细说明本申请实施例提供的另一种通信方法。
该通信方法也可应用于包括第一通信设备和第二通信设备的无线通信系统中。
关于第一通信设备和第二通信设备的示例可以参考上文的描述，这里不再赘述。
图36为本申请实施例提供的一例通信方法300的示意性流程图。如图36所示，该通信方法300包括S310和S320。
S310，第一通信设备确定时隙上不用于发送传输块的符号数。其中，符号数用于确定传输块的大小，符号数为大于或等于0，且小于或等于5的整数。
应理解，符号数为0可以理解为时隙上没有不用于发送传输块的符号数，换句话说，时隙上的全部符号都可用于发送传输块。
关于方法300中涉及的时隙的相关描述可以参见上文方法200中的相关描述，这里不再赘述。
本申请实施对传输块传输的内容不作限定。例如，传输块可以传输上文方法200中所述的第一消息。针对第一消息的描述可以参考上文的相关描述，这里不再赘述。
在一个示例中，第一通信设备可以先确定第一符号集合，然后根据第一符号集合，确定符号数。
其中，关于第一符合集合的描述参见上文方法200中的相关描述，以及。关于第一通信设备如何确定第一符号集合的描述可以也可以参见上文方法200中的相关描述，这里均不再赘述。
在另一个示例中，第一通信设备可以直接确定符号数。
下面，以符号数为情况1’、情况2’和情况3’为例，对S310进行详细介绍。
情况1’，时隙上不用于发送传输块的符号数包括时隙上第一个符号和/或最后一个符号中不用于发送传输块的符号数。
方式A1，该S310具体包括：根据第一信息和第二信息，确定时隙上不用于发送传输块的符号数。其中，第一信息用于指示时隙的第一个符号前是否存在CPE传输的信号；第二信息用于指示时隙在时域上是否连续传输。
示例性地，第一信息包括第二字段，该第二字段用于指示时隙的第一个符号前是否存在CPE传输的信号。
例如，第二字段可以使用1个比特指示时隙的第一个符号前是否存在CPE传输的信号。若第二字段指示0，可认为时隙的第一个符号前存在CPE传输的信号；若第二字段指示1，可认为时隙的第一个符号前不存在CPE传输的信号。
若第一信息指示时隙的第一个符号前不存在CPE传输的信号，那么时隙上不用于发送传输块的符号数加1，且加的一个符号为时隙上第一个符号。若第一信息指示时隙的第一个符号前存在CPE传输的信号，那么时隙上不用于发送传输块的符号数加0。
示例性地，第二信息包括第三字段，该第三字段用于指示时隙在时域上是否连续传输。
在一个示例中，第三字段可以使用1个比特指示时域上是否连续传输。
例如，若第三字段指示0，可认为时隙在时域上非连续传输；若第三字段指示1，可认为时隙在时域上连续传输。
在该示例中，若第二信息指示时隙在时域上连续传输，那么时隙上不用于发送传输块的符号数加0。若第二信息指示时隙在时域上非连续传输，那么时隙上不用于发送传输块的符号数加2，且加的两个符号为时隙上的第一个符号和最后一个符号。
在另一个示例中，第三字段可以使用2比特指示时域上是否连续传输。
例如，若第三字段指示00，可认为时隙在时域上非连续传输；若第三字段指示01，可认为时隙与后一个时隙在时域上连续传输；若第三字段指示10，可认为时隙与前一个时隙在时域上连续传输；若第三字段指示11，可认为时隙分别与前一个时隙、后一个时隙在时域上连续传输。
在该示例中，若第二信息指示时隙在时域上连续传输，那么时隙上不用于发送传输块的符号数加0。若第二信息指示时隙与前一个时隙在时域上连续传输，那么时隙上不用于发送传输块的符号数加1，且加的一个符号为时隙上第一个符号。若第二信息用于指示时隙与后一个时隙在时域上连续传输，那么时隙上不用于发送传输块的符号数加1，且加的一个符号为时隙上最后一个符号。
这样，根据第一信息和第二信息，确定的时隙上不用于发送传输块的符号数为0、1或2。
方式B1，该S310具体包括：根据第三信息，确定时隙上不用于发送传输块的符号数；其中，第三信息用于指示第一个符号和最后一个符号中传输块不占用的符号数。
示例性地，第三信息包括第四字段，该第四字段用于指示第一个符号和最后一个符号中传输块不占用的符号数。
在一个示例中，第四字段可以使用1个比特指示第一个符号和最后一个符号中传输块不占用的符号数。例如，表5和表6示出了两例第四字段联合指示时隙上第一个符号和/或最后一个符号中不用于发送传输块的符号数。
表5
表6
方式C1，该S310具体包括：根据第一信息或第二信息、与第三信息，确定时隙上不用于发送传输块的符号数；其中，第一信息用于指示时隙的第一个符号前是否存在CPE传输的信号；第二信息用于指示时隙在时域上是否连续传输；第三信息用于指示第一个符号或最后一个符号是否是传输块不占用的符号。
应理解，根据第一信息或第二信息、与第三信息，确定时隙上不用于发送传输块的符号数，可以理解为第一信息或第二信息、与第三信息联合指示时隙上第一个符号和/或最后一个符号中不用于发送传输块的符号数。
示例性地，第一信息包括第二字段，该第二字段用于指示时隙的第一个符号前是否存在CPE传输的信号。第二信息包括第三字段，该第三字段用于指示时隙在时域上是否连续传输。第三信息包括第四字段，该第四字段用于指示第一个符号和最后一个符号中传输块不占用的符号。其中，第二字段或第三字段，与第四字段联合指示时隙上第一个符号和/或最后一个符号中不用于发送传输块的符号数。
在一个示例中，第二字段可以使用1个比特指示时隙的第一个符号前是否存在CPE传输的信号。第三字段可以使用1个比特指示时隙在时域上是否连续传输。第四字段也可以使用1个比特指示第一个符号或最后一个符号中传输块不占用的符号数。例如，表7示出了一例第二字段或第三字段，与第四字段联合指示时隙上第一个符号和/或最后一个符号中不用于发送传输块的符号数。
表7

这样，根据第一信息与第三信息，或根据第二信息与第三信息，确定的时隙上不用于发送传输块的符号数为0、1或2。
情况2’，时隙上不用于发送传输块的符号数包括与PSFCH对应的符号数。其中，与PSFCH对应的符号数大于或等于K，且小于或等于K+2，K为PSFCH传输占用的符号数。
本申请实施例对K的取值不作限定。
示例性地，K的取值为信令配置的或预定义的。
方式A2，该S310具体包括：根据第四信息，确定时隙上不用于发送传输块的符号数。其中，第四信息用于指示以下至少一项：发送或接收PSFCH；PSFCH是否频分复用；PSFCH的播类型。
示例性地，第四信息包括以下至少一项：第五字段、第六字段、第七字段。其中，第五用于指示发送或接收PSFCH。第六字段用于指示PSFCH是否频分复用。第七字段用于指示PSFCH的播类型。
例如，第五字段可以使用1个比特指示发送或接收PSFCH。若第五字段指示0，可认为发送PSFCH；若第五字段指示1，可认为接收PSFCH。
例如，第六字段可以使用1个比特指示PSFCH是否频分复用。若第六字段指示0，可认为PSFCH未频分复用；若第六字段指示1，可认为PSFCH频分复用。
例如，第七字段可以使用1个比特指示PSFCH的播类型。若第七字段指示0，可认为PSFCH的播类型为单播；若第七字段指示1，可认为PSFCH的播类型为组播。
若第四信息指示接收PSFCH，那么符号数加(K+2)。
若第四信息指示发送PSFCH以及PSFCH频分复用，或者，若第三信息指示发送PSFCH以及PSFCH的播类型为组播，那么时隙上不用于发送传输块的符号数加(K+1)。
若第四信息指示发送PSFCH以及PSFCH未频分复用，或者，若第三信息指示发送PSFCH以及PSFCH的播类型为单播，那么时隙上不用于发送传输块的符号数加K。
方式B2，该S310具体包括：根据第五信息，确定时隙上不用于发送传输块的符号数。其中，第五信息用于指示与PSFCH对应的符号中传输块不占用的符号数。
示例性地，第五信息包括第八字段，该第八字段用于指示与PSFCH对应的符号中传输块不占用的符号数。
在一个示例中，第八字段可以使用1个比特指示与PSFCH对应的符号中传输块不占用的符号数。例如，表8示出了一例第八字段使用1比特指示与PSFCH对应的符号中传输块不占用的符号数。
表8
在另一个示例中，该第八字段可以使用2比特指示与PSFCH对应的符号数中不用于发送传输块的符号数。例如，表9示出了一例第八字段使用2比特指示与PSFCH对应的符号中传输块不占用的符号数。
表9
方式C2，该S310具体包括：根据第四信息和第五信息，确定时隙上不用于发送传输块的符号数。其中，第四信息用于指示以下至少一项：发送或接收PSFCH；PSFCH是否频分复用；PSFCH的播类型。第五信息用于指示与PSFCH对应的符号中传输块不占用的符号数。
应理解，根据第四信息和第五信息，确定时隙上不用于发送传输块的符号数，可以理解为第四信息和第五信息联合指示与PSFCH对应的符号中传输块不占用的符号数。
示例性地，第四信息包括第九字段，该第九字段用于指示以下至少一项：发送或接收PSFCH；PSFCH 是否频分复用；PSFCH的播类型。第五信息包括第八字段，该第八字段用于指示与PSFCH对应的符号中传输块不占用的符号数。其中，第九字段和第八字段联合指示时隙上与PSFCH对应的符号中传输块不占用的符号数。
在一个示例中，第九字段可以使用1个比特指示以下至少一项：发送或接收PSFCH；PSFCH是否频分复用；PSFCH的播类型。第八字段可以使用1个比特指示时隙上与PSFCH对应的符号中传输块不占用的符号数。例如，表10示出了一例第九字段和第八字段联合指示时隙上与PSFCH对应的符号中传输块不占用的符号数。
表10
情况3’，时隙上不用于发送传输块的符号数包括时隙上与PSFCH对应的符号数、以及第一个符号和/或最后一个符号中不用于发送传输块的符号数。
方式A3，该S310具体包括：根据第一信息、第二信息和第四信息，确定时隙上不用于发送传输块的符号数。
第一信息和第二信息可以参考上文情况1’中的相关描述，以及第四信息可以参考上文情况2’中的相关描述，这里不再赘述。
可选地，若PSFCH传输占用的符号K大于2，S310中所述的符号数为大于或等于0，且小于或等于5的整数，可替换为：符号数为大于或等于0，且小于或等于4+K。
方式B3，该S310具体包括：根据第六信息，确定时隙上不用于发送传输块的符号数。其中，第六信息用于指示时隙上与PSFCH对应的符号数、以及第一个符号和/或最后一个符号中不用于发送传输块的符号数。
示例性地，第六信息包括第十字段，该第十字段用于指示时隙上与PSFCH对应的符号数、以及第一个符号和/或最后一个符号中不用于发送传输块的符号数。
在一个示例中，第十字段可以使用2个比特指示时隙上与PSFCH对应的符号数、以及第一个符号和/或最后一个符号中不用于发送传输块的符号数。例如，表11至表13分别示出了三例第十字段可以使用2个比特指示时隙上与PSFCH对应的符号数、以及第一个符号和/或最后一个符号中不用于发送传输块的符号数。
表11
表12
表13

在另一个示例中，该第十字段可以使用3比特指示时隙上与PSFCH对应的符号数、以及第一个符号和/或最后一个符号中不用于发送传输块的符号数。例如，表14示出了一例第十字段可以使用3个比特指示时隙上与PSFCH对应的符号数、以及第一个符号和/或最后一个符号中不用于发送传输块的符号数。
表14
方式C3，该S310具体包括：根据第六信息与第一信息、第二信息、第四信息中的至少一项，确定时隙上不用于发送传输块的符号数。
第一信息和第二信息可以参考上文情况1’中的相关描述，第四信息可以参考上文情况2’中的相关描述，以及第六信息可以参考上文方式B3中的相关描述，这里不再赘述。
应理解，根据第六信息与第一信息、第二信息、第四信息中的至少一项，确定符号数，可以理解为第四信息和第五信息联合指示与PSFCH对应的符号中传输块不占用的符号数。
示例性地，第六信息包括第十字段，该第十字段用于指示时隙上与PSFCH对应的符号数、以及第一个符号和/或最后一个符号中不用于发送传输块的符号数。
在一个示例中，第十字段可以使用1比特指示时隙上与PSFCH对应的符号数、以及第一个符号和/或最后一个符号中不用于发送传输块的符号数。第一信息包括的第二字段可以使用1个比特指示时隙的第一个符号前是否存在CPE传输的信号。第二信息包括的第三字段可以使用1个比特指示时域上是否连续传输。例如，表15示出了一例第十字段、第二字段、和第三字段联合指示时隙上与PSFCH对应的符号数、以及第一个符号和/或最后一个符号中不用于发送传输块的符号数。
表15
在另一个示例中，第十字段可以使用2比特指示时隙上与PSFCH对应的符号数、以及第一个符号和/或最后一个符号中不用于发送传输块的符号数。第四信息包括的第五字段可以使用1个比特指示发送或接收PSFCH。第四信息包括的第六字段可以使用1个比特指示PSFCH是否频分复用。例如，表16示出了一例第十字段、第二字段、和第三字段联合指示时隙上与PSFCH对应的符号数、以及第一个符号和/或最后一个符号中不用于发送传输块的符号数。
表16
S320，第一通信设备向第二通信设备发送第一指示信息。相应地，第二通信设备接收第一通信设备发送的第一指示信息。
其中，第一指示信息用于指示符号数。
下面，以符号数为情况1’、情况2’和情况3’为例，对S320中第一指示信息如何指示符号数进行详细介绍。
情况1’，时隙上不用于发送传输块的符号数包括时隙上第一个符号和/或最后一个符号中不用于所述传输块的符号数。
示例性地，第一指示信息包括第一字段，第一字段指示时隙上第一个符号和/或最后一个符号中不用于发送传输块的符号数。
在一个示例中，该第一字段可以使用1比特指示第一个符号和/或最后一个符号中不用于发送传输块的符号数。例如，表17和表18示出了两例第一字段使用1比特指示第一个符号和/或最后一个符号中不用于发送传输块的符号数。
表17
表18
在另一个示例中，该第一字段可以使用2比特指示第一个符号和/或最后一个符号中不用于发送传输块的符号数。例如，表19示出了一例第一字段使用2比特指示第一个符号和/或最后一个符号中不用于发送传输块的符号数。
表19

情况2’，时隙上不用于发送传输块的符号数包括与PSFCH对应的符号数。
示例性地，第一指示信息包括第一字段，第一字段指示时隙上与PSFCH对应的符号数中不用于发送传输块的符号数。
在一个示例中，该第一字段可以使用1比特指示与PSFCH对应的符号数中不用于发送传输块的符号数。例如，表20示出了一例第一字段使用1比特指示与PSFCH对应的符号数中不用于发送传输块的符号数。
表20
在另一个示例中，该第一字段可以使用2比特指示与PSFCH对应的符号数中不用于发送传输块的符号数。例如，表21示出了一例第一字段使用2比特指示与PSFCH对应的符号数中不用于发送传输块的符号数。
表21
情况3’，时隙上不用于发送传输块的符号数包括与物理侧行链路反馈控制信道PSFCH对应的符号数以及时隙上第一个符号和/或最后一个符号。
情况31’，第一指示信息直接指示时隙上不用于发送传输块的符号数
示例性地，第一指示信息包括第一字段，第一字段指示第一个符号、与PSFCH对应的符号、以及最后一个符号中不用于发送传输块的符号数。
在一个示例中，该第一字段可以使用2比特指示第一个符号、与PSFCH对应的符号、以及最后一个符号中不用于发送传输块的符号数。例如，表22至表23示出了三例第一字段使用2比特指示第一个符号、与PSFCH对应的符号、以及最后一个符号中不用于发送传输块的符号数。
表22
表23
表24

在另一个示例中，该第一字段可以使用3比特指示第一个符号、与PSFCH对应的符号、以及最后一个符号中不用于发送传输块的符号数。例如，表25示出了一例第一字段使用3比特指示第一个符号、与PSFCH对应的符号、以及最后一个符号中不用于发送传输块的符号数。
表25
情况32’，第一指示信息分开指示首尾符号中不用于发送传输块的符号数，以及与PSFCH对应的符号中不用于发送传输块的符号数
示例性地，第一指示信息包括第七信息和第八信息，其中，第七信息用于指示时隙上第一个符号和最后一个符号中不用于发送传输块的符号数。第八信息用于指示与PSFCH对应的符号中不用于发送传输块的符号数。
示例性地，第七信息包括第十一字段，该第十一字段用于指示时隙上第一个符号和最后一个符号中不用于发送传输块的符号数。
在一个示例中，第十一字段可以使用1比特指示第一个符号和最后一个符号中不用于发送传输块的符号数。例如，表26和表27示出了两例第十一字段使用1比特指示第一个符号和最后一个符号中不用于发送传输块的符号数。
表26
表27
在另一个示例中，该第十一字段可以使用2比特指示第一个符号和最后一个符号中不用于发送传输块的符号数。例如，表28示出了两例第十一字段使用2比特指示第一个符号和最后一个符号中不用于发送传输块的符号数。
表28
示例性地，第八信息包括第十二字段，该第十二字段用于指示与PSFCH对应的符号中不用于发送传输块的符号数。
在一个示例中，第十一字段可以使用1比特指示与PSFCH对应的符号中不用于发送传输块的符号数。例如，表29示出了一例第十一字段使用1比特指示与PSFCH对应的符号中不用于发送传输块的符号数。
表29
在另一个示例中，该第十一字段可以使用2比特指示与PSFCH对应的符号中不用于发送传输块的符号数。例如，表30示出了一例第十一字段使用2比特指示与PSFCH对应的符号中不用于发送传输块的符号数。
表30
情况33’，第一指示信息分开指示第一个符号是否是不用于发送传输块的符号，与PSFCH对应的符号中不用于发送传输块的符号数，以及最后一个符号是否是不用于发送传输块的符号
示例性地，第一指示信息包括第九信息、第十信息和第八信息，其中，第九信息用于指示时隙上第一个符号中不用于发送传输块的符号数。第十信息用于指示时隙上最后一个符号中不用于发送传输块的符号数。第八信息用于指示与PSFCH对应的符号中不用于发送传输块的符号数。
示例性地，第九信息包括第十三字段，该第十三字段用于指示时隙上第一个符号中是不用于发送传输块的符号数。
在一个示例中，第十三字段可以使用1比特指示时隙上第一个符号是否是不用于发送传输块的符号数。例如，表31示出了一例第十三字段使用1比特指示第一个符号中不用于发送传输块的符号数。
表31
示例性地，第十信息包括第十四字段，该第十四字段用于指示时隙上最后一个符号中不用于发送传输块的符号数。例如，表33示出了一例第十四字段使用1比特指示最后一个符号中不用于发送传输块的符号数。
表32
关于第八信息如何指示与PSFCH对应的符号中不用于发送传输块的符号数可以参考上文情况32’的相关描述，这里不再赘述。
可选地，在一些实施例中，如图37所示，方法300还包括S330和S340。该S330在S310之后执行，S340在S330之后执行，本申请实施例对S330或S340与S320的执行顺序不作限定。
S330，第一通信设备根据符号数确定分配给传输信道的子载波数NRE。
示例性地，传输信道上传输的可以是上文所述的传输块。
可选地，在一些实施例中，子载波数还可以称为RE。
在一个示例中，第一通信设备根据确定NRE。其中，为物理资源块中的子载波数；为时隙的符号数；为第一个符号和最后一个符号中不用于发送传输块的符号 数，的取值为0，1或2。
可选地，第一通信设备还需要获取指示侧行参考信号开销的高层参数(如sl-X-Overhead)(侧行开销)。第一通信设备在确定NRE时，还需在的基础上去掉高层参数(如sl-X-Overhead)的开销。可选地，其中，为高层参数(如sl-X-Overhead)的开销。
可选地，若第一通信设备还需要获取解调参考信号(demodulation reference signal，DMRS)的开销。第一通信设备在确定NRE时，第一通信设备还需在的基础上去掉DMRS的开销。可选地，其中，为DMRS的开销。
可选地，若第一通信设备还需要获取指示侧行参考信号开销的高层参数(如sl-X-Overhead)(侧行开销)和DMRS的开销。第一通信设备在确定NRE时，第一通信设备还需在的基础上去掉高层参数(如sl-X-Overhead)的开销和DMRS的开销，也就是说。可选地，其中，为DMRS的开销。
在另一个示例中，第一通信设备根据确定NRE。其中，为物理资源块中的子载波数；为时隙的符号数；为第一个符号和最后一个符号中不用于发送传输块的符号数，的取值为0，1或2；为与PSFCH对应的符号中不用于发送传输块的符号数。
可选地，第一通信设备还需要获取指示侧行参考信号开销的高层参数(如sl-X-Overhead)(侧行开销)。第一通信设备在确定NRE时，第一通信设备还需在的基础上去掉高层参数(如sl-X-Overhead)的开销。可选地，其中，为高层参数(如sl-X-Overhead)的开销。
可选地，若第一通信设备还需要传输DMRS。第一通信设备在确定NRE时，第一通信设备还需在的基础上去掉DMRS的开销。可选地，其中，为DMRS的开销。
可选地，若第一通信设备还需要获取指示侧行参考信号开销的高层参数(如sl-X-Overhead)(侧行开销)和DMRS。第一通信设备在确定NRE时，第一通信设备还需在的基础上去掉高层参数(如sl-X-Overhead)的开销和DMRS的开销，也就是说，其中，为DMRS的开销。
在又一个示例中，第一通信设备根据根据确定NRE。其中，为物理资源块中的子载波数；为时隙的符号数；为第一个符号、最后一个符号以及与PSFCH对应的符号中不用于发送传输块的符号数。
可选地，第一通信设备还需要获取指示侧行参考信号开销的高层参数(如sl-X-Overhead)(侧行开销)。第一通信设备在确定NRE时，第一通信设备还需在的基础上去掉高层参数(如sl-X-Overhead)的开销。可选地，其中，为高层参数(如sl-X-Overhead)的开销。
可选地，若第一通信设备还需要传输解调参考信号(demodulation reference signal，DMRS)，第 一通信设备在确定NRE时，第一通信设备还需在的基础上去掉DMRS的开销。可选地，其中，为DMRS的开销。
可选地，若第一通信设备还需要获取指示侧行参考信号开销的高层参数(如sl-X-Overhead)(侧行开销)和DMRS第一通信设备在确定NRE时，第一通信设备还需在的基础上去掉高层参数(如sl-X-Overhead)的开销和DMRS的开销。可选地，其中，为DMRS的开销。
S340，第一通信设备根据NRE确定传输块的大小。
可选地，在一些实施例中，如图37所示，方法300还包括S350，S350在S340之后执行。
S350，第一通信设备向第二通信设备发送传输块。相应地，第二通信设备接收第一通信设备发送的传输块。
示例性地，第二通信设备根据第一指示信息接收第一通信设备发送的传输块。具体的，首先，第二通信设备先根据第一指示信息所指示的符号数确定分配给传输信道的子载波数NRE。其次，第二通信设备根据NRE确定传输块的大小。最后，第二通信设备根据传输块的大小，接收传输块。
关于第二通信设备如何根据符号数确定分配给传输信道的子载波数NRE，可以参见上文第一通信设备根据符号数确定分配给传输信道的子载波数NRE的相关描述，这里不再赘述。
本申请实施例还提供了另一种通信方法400，如图38所示，该通信方法包括S210、S220、S310、S330至S350。
其中，S310具体包括第一通信设备根据S210确定的第一符号集合，确定时隙上不用于发送传输块的符号数。
在S350中，第二通信设备根据S220所接收的第一通信设备的第一指示信息，确定符号数，并根据符号数确定分配给传输信道的子载波数NRE。其次，第二通信设备根据NRE确定传输块的大小。最后，第二通信设备根据传输块的大小，接收传输块。
关于第二通信设备如何根据符号数确定分配给传输信道的子载波数NRE，可以参见上文方法300中第一通信设备根据符号数确定分配给传输信道的子载波数NRE的相关描述，这里不再赘述。
S210、S220、S310、S330至S350中其他描述可以分别参见上文的相关描述，这里不再赘述。
下面，结合图39和图40，详细描述本申请实施例提供的通信装置。
图39为本申请实施例提供的一例通信装置500的示意性结构图。
例如，如图39所示，该通信装置500包括处理单元510和收发单元520。其中，处理单元510用于进行数据处理。收发单元520用于与外部进行通信。收发单元520还可以称为通信接口或通信单元。
可选地，该通信装置500还可以包括存储单元，该存储单元可以用于存储指令或者和/或数据，处理单元510可以读取存储单元中的指令或者和/或数据。
在一种可实现的方式中，该通信装置500可以用于执行上文方法实施例中第一通信设备所执行的动作，这时，该通信装置500可以为第一通信设备或者可配置于第一通信设备的部件，处理单元510用于执行上文方法实施例中第一通信设备的处理相关的操作，收发单元520用于执行上文方法实施例中第一通信设备的收发相关的操作。
在另一种可实现的方式中，该通信装置500可以用于执行上文方法实施例中第二通信设备所执行的动作，这时，该通信装置500可以为第二通信设备或者可配置于第二通信设备的部件，处理单元510用于执行上文方法实施例中第二通信设备的处理相关的操作，收发单元520用于执行上文方法实施例中第二通信设备的收发相关的操作。
图40示出了本申请实施例提供的通信装置600的示意性结构图。
示例性地，该通信装置600可以为上文实施例中所述的第一通信设备或第二通信设备。
如图40所示，该通信装置600包括：一个或多个处理器610，一个或多个存储器620，该一个或多个存储器存储620存储有一个或多个计算机程序，该一个或多个计算机程序包括指令。当该指令被所述一个或多个处理器610运行时，使得所述的通信装置600执行上述实施例中第一通信设备执行的技术方案或使得所述的装置600执行上述实施例中第二通信设备执行的技术方案。
本申请实施例提供了一种通信系统，包括第一通信设备和第二通信设备，该系统用于执行上述实施例中的技术方案。其实现原理和技术效果与上述方法相关实施例类似，此处不再赘述。
本申请实施例提供一种计算机程序产品，当所述计算机程序产品在设备运行时，使得设备执行上述实施例中的技术方案。其实现原理和技术效果与上述方法相关实施例类似，此处不再赘述。其中，设备可以包括上文实施例中所述的第一通信设备或第二通信设备。
本申请实施例提供一种计算机可读存储介质，该计算机可读存储介质包含指令，当所述指令在设备运行时，使得所述设备执行上述实施例的技术方案。其实现原理和技术效果类似，此处不再赘述。其中，设备可以包括上文实施例中所述的第一通信设备或第二通信设备。
本申请实施例提供一种芯片，所述芯片用于执行指令，当所述芯片运行时，执行上述实施例中的技术方案。其实现原理和技术效果类似，此处不再赘述。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (40)

  1. 一种通信方法，其特征在于，所述通信方法应用于第一通信设备，所述通信方法包括：
    确定第一符号集合，所述第一符号集合为时隙中第一消息传输不占用的符号的集合，所述第一符号集合包括所述时隙中倒数第M个符号至倒数第二个符号中的至少一个符号，所述M为大于或等于2的整数；
    发送第一指示信息，所述第一指示信息用于指示所述第一符号集合。
  2. 根据权利要求1所述的通信方法，其特征在于，所述倒数第M个符号至倒数第二个符号包括与物理侧行链路反馈控制信道PSFCH对应的符号。
  3. 根据权利要求2所述的通信方法，其特征在于，所述第一指示信息包括第一信息、第二信息和第三信息，所述第一信息、所述第二信息和所述第三信息中的至少一项用于指示所述第一符号集合；
    其中，所述第一信息用于指示发送或接收所述PSFCH；
    所述第二信息用于指示所述PSFCH是否频分复用；
    所述第三信息用于指示所述PSFCH的播类型。
  4. 根据权利要求3所述的通信方法，其特征在于，
    所述第一信息用于指示接收所述PSFCH，所述第一符号集合包括所述PSFCH传输占用的符号之前的两个符号和所述PSFCH传输占用的符号，所述PSFCH传输占用的符号数为(M-3)，所述M大于或等于4；或者，
    所述第一信息用于指示发送所述PSFCH以及所述第二信息用于指示所述PSFCH频分复用，或者，所述第一信息用于指示发送所述PSFCH以及所述第三信息用于指示所述PSFCH的播类型为组播，所述第一符号集合包括所述PSFCH传输占用的符号之前的一个符号和所述PSFCH传输占用的符号，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3；或者，
    所述第一信息用于指示发送所述PSFCH以及所述第二信息用于指示所述PSFCH未频分复用，或者，所述第一信息用于指示发送所述PSFCH以及所述第三信息用于指示所述PSFCH的播类型为单播，所述第一符号集合包括所述PSFCH传输占用的符号，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
  5. 根据权利要求2所述的通信方法，其特征在于，所述第一指示信息包括第一信息、第二信息、第三信息和第四信息，所述第一信息、所述第二信息和所述第三信息中的至少一项与所述第四信息用于指示所述第一符号集合；
    其中，所述第一信息用于指示发送或接收所述PSFCH；
    所述第二信息用于指示所述PSFCH是否频分复用；
    所述第三信息用于指示所述PSFCH的播类型。
  6. 根据权利要求2所述的通信方法，其特征在于，所述第一符号集合还包括所述时隙的第一个符号和/或最后一个符号。
  7. 根据权利要求6所述的通信方法，其特征在于，所述第一指示信息包括第一字段，所述第一字段指示所述第一个符号、所述倒数第M个符号至倒数第二个符号、以所述及最后一个符号中所述第一消息传输不占用的符号。
  8. 根据权利要求6所述的通信方法，其特征在于，所述第一指示信息包括第一信息、第二信息、第三信息、第五信息和第六信息，所述第五信息或所述第六信息、与所述第一信息、所述第二信息和所述第三信息中的至少一项用于指示所述第一符号集合；
    其中，所述第一信息用于指示发送或接收所述PSFCH；
    所述第二信息用于指示所述PSFCH是否频分复用；
    所述第三信息用于指示所述PSFCH的播类型；
    所述第五信息用于指示所述时隙的第一个符号前是否存在循环前缀扩展CPE传输的信号；
    所述第六信息用于指示所述时隙在时域上是否连续传输。
  9. 根据权利要求6所述的通信方法，其特征在于，所述第一指示信息包括第一信息、第二信息、第三信息、第五信息、第六信息、和第七信息，所述第七信息与所述第一信息、所述第二信息、所述 第三信息、所述第五信息和所述第六信息中的至少一项用于指示所述第一符号集合；
    其中，所述第一信息用于指示发送或接收所述PSFCH；
    所述第二信息用于指示所述PSFCH是否频分复用；
    所述第三信息用于指示所述PSFCH的播类型；
    所述第五信息用于指示所述时隙的第一个符号前是否存在循环前缀扩展CPE传输的信号；
    所述第六信息用于指示所述时隙在时域上是否连续传输。
  10. 根据权利要求6所述的通信方法，其特征在于，所述第一指示信息包括第八信息，所述第一指示信息还包括第九信息和/或第十信息；
    其中，所述第八信息用于指示所述倒数第M个符号至倒数第二个符号中所述第一消息传输不占用的符号；
    所述第九信息用于指示所述第一个符号是否是所述第一消息传输不占用的符号；
    所述第十信息用于指示所述最后一个符号是否是所述第一消息传输不占用的符号。
  11. 根据权利要求10所述的通信方法，其特征在于，所述第九信息用于指示所述时隙的第一个符号前是否存在CPE传输的信号或所述时隙在时域上是否连续传输。
  12. 根据权利要求11所述的通信方法，其特征在于，所述第九信息用于指示所述时隙的第一个符号前不存在CPE传输的信号，所述第一符号集合包括所述第一个符号，或者，
    所述第九信息用于指示所述时隙在时域上非连续传输，所述第一符号集合包括所述第一个符号。
  13. 根据权利要求10至12中任一项所述的通信方法，其特征在于，所述第十信息用于指示所述时隙在时域上是否连续传输。
  14. 根据权利要求13所述的通信方法，其特征在于，所述第十信息用于指示所述时隙在时域上非连续传输，所述第一符号集合包括所述最后一个符号。
  15. 根据权利要求10至14中任一项所述的通信方法，其特征在于，所述第八信息包括第一信息、第二信息和第三信息，所述第一信息、所述第二信息和所述第三信息中的至少一项用于指示所述倒数第M个符号至倒数第二个符号中所述第一消息传输不占用的符号；
    其中，所述第一信息用于指示发送或接收所述PSFCH；
    所述第二信息用于指示所述PSFCH是否频分复用；
    所述第三信息用于指示所述PSFCH的播类型。
  16. 根据权利要求15所述的通信方法，其特征在于，所述第一信息用于指示接收所述PSFCH，所述第一符号集合包括所述PSFCH传输占用的符号之前的两个符号和所述PSFCH传输占用的符号，所述PSFCH传输占用的符号数为(M-3)，所述M大于或等于4；或者，
    所述第一信息用于指示发送所述PSFCH以及所述第二信息用于指示所述PSFCH频分复用，或者，所述第一信息用于指示发送所述PSFCH以及所述第三信息用于指示所述PSFCH的播类型为组播，所述第一符号集合包括所述PSFCH传输占用的符号之前的一个符号和所述PSFCH传输占用的符号，所述PSFCH传输占用的符号数为(M-2)，所述M大于或等于3；或者，
    所述第一信息用于指示发送所述PSFCH以及所述第二信息用于指示所述PSFCH未频分复用，或者，所述第一信息用于指示发送所述PSFCH以及所述第三信息用于指示所述PSFCH的播类型为单播，所述第一符号集合包括所述PSFCH传输占用的符号，所述PSFCH传输占用的符号数为(M-1)，所述M大于或等于2。
  17. 根据权利要求10至14中任一项所述的通信方法，其特征在于，所述第八信息包括第一信息、第二信息、第三信息和第四信息，所述第四信息与所述第一信息、所述第二信息或所述第三信息中的至少一项用于指示所述倒数第M个符号至倒数第二个符号中所述第一消息传输不占用的符号；
    其中，所述第一信息用于指示发送或接收所述PSFCH；
    所述第二信息用于指示所述PSFCH是否频分复用；
    所述第三信息用于指示所述PSFCH的播类型。
  18. 根据权利要求1至17中任一项所述的通信方法，其特征在于，所述通信方法还包括：
    根据所述第一符号集合，确定时隙上不用于发送传输块的符号数，所述符号数用于确定所述传输块的大小，所述符号数为大于或等于0，且小于或等于5的整数；
    所述第一指示信息还用于指示所述符号数。
  19. 一种通信方法，其特征在于，所述通信方法应用于第二通信设备，所述通信方法包括：
    接收第一指示信息，所述第一指示信息用于指示第一符号集合，所述第一符号集合为时隙中第一消息传输不占用的符号的集合，所述第一符号集合包括所述时隙中倒数第M个符号至倒数第二个符号中的至少一个符号，所述M为大于或等于2的整数；
    根据所述第一指示信息，接收所述第一消息。
  20. 根据权利要求19所述的通信方法，其特征在于，所述通信方法还包括：
    根据所述第一符号集合，对所述第一消息进行解码。
  21. 根据权利要求19或20所述的通信方法，其特征在于，所述倒数第M个符号至倒数第二个符号包括与物理侧行链路反馈控制信道PSFCH对应的符号。
  22. 根据权利要求21所述的通信方法，其特征在于，所述第一指示信息包括第一信息、第二信息和第三信息，所述第一信息、所述第二信息和所述第三信息中的至少一项用于指示所述第一符号集合；
    其中，所述第一信息用于指示发送或接收所述PSFCH；
    所述第二信息用于指示所述PSFCH是否频分复用；
    所述第三信息用于指示所述PSFCH的播类型。
  23. 根据权利要求21所述的通信方法，其特征在于，所述第一指示信息包括第一信息、第二信息、第三信息和第四信息，所述第一信息、所述第二信息和所述第三信息中的至少一项与所述第四信息用于指示所述第一符号集合；
    其中，所述第一信息用于指示发送或接收所述PSFCH；
    所述第二信息用于指示所述PSFCH是否频分复用；
    所述第三信息用于指示所述PSFCH的播类型。
  24. 根据权利要求21所述的通信方法，其特征在于，所述第一符号集合还包括所述时隙的第一个符号和/或最后一个符号。
  25. 根据权利要求24所述的通信方法，其特征在于，所述第一指示信息包括第一字段，所述第一字段指示所述第一个符号、所述倒数第M个符号至倒数第二个符号、以所述及最后一个符号中所述第一消息传输不占用的符号。
  26. 根据权利要求24所述的通信方法，其特征在于，所述第一指示信息包括第一信息、第二信息、第三信息、第五信息和第六信息，所述第五信息或所述第六信息、与所述第一信息、所述第二信息和所述第三信息中的至少一项用于指示所述第一符号集合；
    其中，所述第一信息用于指示发送或接收所述PSFCH；
    所述第二信息用于指示所述PSFCH是否频分复用；
    所述第三信息用于指示所述PSFCH的播类型；
    所述第五信息用于指示所述时隙的第一个符号前是否存在循环前缀扩展CPE传输的信号；
    所述第六信息用于指示所述时隙在时域上是否连续传输。
  27. 根据权利要求24所述的通信方法，其特征在于，所述第一指示信息包括第一信息、第二信息、第三信息、第五信息、第六信息、和第七信息，所述第七信息与所述第一信息、所述第二信息、所述第三信息、所述第五信息和所述第六信息中的至少一项用于指示所述第一符号集合；
    其中，所述第一信息用于指示发送或接收所述PSFCH；
    所述第二信息用于指示所述PSFCH是否频分复用；
    所述第三信息用于指示所述PSFCH的播类型；
    所述第五信息用于指示所述时隙的第一个符号前是否存在循环前缀扩展CPE传输的信号；
    所述第六信息用于指示所述时隙在时域上是否连续传输。
  28. 根据权利要求24所述的通信方法，其特征在于，所述第一指示信息包括第八信息，所述第一指示信息还包括第九信息和/或第十信息；
    其中，所述第八信息用于指示所述倒数第M个符号至倒数第二个符号中所述第一消息传输不占用的符号；
    所述第九信息用于指示所述第一个符号是否是所述第一消息传输不占用的符号；
    所述第十信息用于指示所述最后一个符号是否是所述第一消息传输不占用的符号。
  29. 根据权利要求28所述的通信方法，其特征在于，所述第九信息用于指示所述时隙的第一个符 号前是否存在CPE传输的信号或所述时隙在时域上是否连续传输。
  30. 根据权利要求29所述的通信方法，其特征在于，所述第九信息用于指示所述时隙的第一个符号前不存在CPE传输的信号，所述第一符号集合包括所述第一个符号，或者，
    所述第九信息用于指示所述时隙在时域上非连续传输，所述第一符号集合包括所述第一个符号。
  31. 根据权利要求28至30中任一项所述的通信方法，其特征在于，所述第十信息用于指示所述时隙在时域上是否连续传输。
  32. 根据权利要求31所述的通信方法，其特征在于，所述第十信息用于指示所述时隙在时域上非连续传输，所述第一符号集合包括所述最后一个符号。
  33. 根据权利要求28至32中任一项所述的通信方法，其特征在于，所述第八信息包括第一信息、第二信息和第三信息，所述第一信息、所述第二信息和所述第三信息中的至少一项用于指示所述倒数第M个符号至倒数第二个符号中所述第一消息传输不占用的符号；
    其中，所述第一信息用于指示发送或接收所述PSFCH；
    所述第二信息用于指示所述PSFCH是否频分复用；
    所述第三信息用于指示所述PSFCH的播类型。
  34. 根据权利要求28至32中任一项所述的通信方法，其特征在于，所述第八信息包括第一信息、第二信息、第三信息和第四信息，所述第四信息与所述第一信息、所述第二信息或所述第三信息中的至少一项用于指示所述倒数第M个符号至倒数第二个符号中所述第一消息传输不占用的符号；
    其中，所述第一信息用于指示发送或接收所述PSFCH；
    所述第二信息用于指示所述PSFCH是否频分复用；
    所述第三信息用于指示所述PSFCH的播类型。
  35. 一种通信装置，其特征在于，包括：
    处理器，用于执行存储器中存储的计算机程序，以使得所述装置执行如权利要求1至18中任一项所述的通信方法，或者以使得所述装置执行如权利要求19至34中任一项所述的通信方法。
  36. 根据权利要求35所述的装置，其特征在于，所述装置还包括所述存储器和/或通信接口，所述通信接口与所述处理器耦合，
    所述通信接口，用于输入和/或输出信息。
  37. 一种通信系统，其特征在于，所述通信系统包括第一通信设备和第二通信设备，所述第一通信设备用于执行权利要求1至18中任一项所述的通信系统，和/或，所述第二通信设备用于执行权利要求19至34中任一项所述的通信方法。
  38. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质上存储有计算机程序，当所述计算机程序在计算机上运行时，使得所述计算机执行如权利要求1至18中任意一项所述的方法，或者以使得所述计算机执行如权利要求19至34中任一项所述的方法。
  39. 一种芯片，其特征在于，包括至少一个处理器和接口电路，所述接口电路用于为所述至少一个处理器提供程序指令或者数据，所述至少一个处理器用于执行所述程序指令，以实现如权利要求1至34中任一项所述的通信方法。
  40. 一种计算机程序产品，其特征在于，所述计算机程序产品包括用于执行如权利要求1至34中任一项所述的通信方法的指令。
PCT/CN2023/100771 2022-06-28 2023-06-16 通信方法及通信装置 WO2024001832A1 (zh)

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CN111867106A (zh) * 2019-04-30 2020-10-30 华为技术有限公司 传输方式确定方法和装置
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