WO2022166975A1 - Procédé et appareil de génération et d'indication d'extension de préfixe cyclique, et support de stockage lisible - Google Patents

Procédé et appareil de génération et d'indication d'extension de préfixe cyclique, et support de stockage lisible Download PDF

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WO2022166975A1
WO2022166975A1 PCT/CN2022/075441 CN2022075441W WO2022166975A1 WO 2022166975 A1 WO2022166975 A1 WO 2022166975A1 CN 2022075441 W CN2022075441 W CN 2022075441W WO 2022166975 A1 WO2022166975 A1 WO 2022166975A1
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cyclic prefix
symbol
prefix extension
gap
symbols
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PCT/CN2022/075441
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English (en)
Chinese (zh)
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张萌
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展讯通信（上海）有限公司
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]

Definitions

  • the present invention relates to the technical field of wireless communication, and in particular, to a method, an apparatus, and a readable storage medium for generating and indicating a cyclic prefix extension.
  • Cyclic Prefix Extention is introduced in 5G NR-U (New Radio in Unlicensed Spectrum), its purpose is to meet the requirements of the two existing CAT LBTs, and the manufacturing duration is 25 ⁇ s/16 ⁇ s/25 ⁇ s +TA (Time Advance, Timing Advance)/16 ⁇ s+TA
  • a gap Gap
  • the user equipment can use this gap to perform Listen Before Talk (LBT), and data can be sent after the LBT passes.
  • LBT Listen Before Talk
  • the solution of the embodiment of the present invention is how to determine the target symbol required to generate the CPE and generate the CPE.
  • an embodiment of the present invention provides a method for generating a cyclic prefix extension, including: receiving configuration information; the configuration information is used to indicate the number N of borrowed target symbols, where the target symbols are used for data transmission The symbol of the information; N ⁇ 1; the cyclic prefix extension is generated according to the configuration information.
  • generating the cyclic prefix extension according to the configuration information includes: acquiring the number of gap symbols corresponding to one time slot; according to the configuration information, the cyclic prefix extension type, and the number of gap symbols , generating the cyclic prefix extension.
  • the generating the cyclic prefix extension according to the configuration information, the cyclic prefix extension type, and the number of gap symbols includes: determining a borrowed target symbol according to the configuration information; The target symbol is adjacent to the gap symbol; according to the cyclic prefix extension type, determine the duration of listening before speaking; in the total duration corresponding to the gap symbol and the target symbol, remove the listening first For the duration mentioned later, the cyclic prefix extension is generated by combining the remaining duration with the cyclic prefix in the next symbol for transmitting data information.
  • the number of gap symbols corresponding to the current time slot is 1.
  • the gap symbol is located at the last symbol of the current time slot; the generating the cyclic prefix extension according to the configuration information, the cyclic prefix extension type and the number of the gap symbols includes: according to the configuration information, determine that the target symbol is the N symbols adjacent to the gap symbol in the current time slot; determine the duration of listening before speaking according to the cyclic prefix extension type; In the total duration corresponding to the target symbol, remove the duration of listening before speaking, and combine the remaining duration with the cyclic prefix of the first symbol in the next time slot to generate the cyclic prefix extension; the next time slot adjacent to the current time slot.
  • the gap symbol is located at the last symbol of the current time slot; the generating the cyclic prefix extension according to the configuration information, the cyclic prefix extension type and the number of the gap symbols includes: according to the configuration information, determine that the target symbol is the N symbols adjacent to the gap symbol in the next time slot; the next time slot is adjacent to the current time slot; according to the cyclic prefix extension type, determine to listen first The duration of talking after; in the total duration corresponding to the gap symbol and the target symbol, remove the duration of listening first and then speaking, and compare the remaining duration with the cycle of the N+1th symbol in the next time slot.
  • the prefixes are combined to generate the cyclic prefix extension.
  • the gap symbol corresponding to the current time slot includes a first gap symbol and a second gap symbol, and the first gap symbol is located before the second gap symbol in timing.
  • the generating the cyclic prefix extension according to the configuration information, the cyclic prefix extension type, and the number of gap symbols includes: determining, according to the configuration information, that the target symbol is the current time slot N symbols adjacent to the first gap symbol and located before the first gap symbol; determine the duration of listening before speaking according to the cyclic prefix extension type;
  • the cyclic prefix extension is generated by combining the remaining duration with the cyclic prefix of the first symbol after the first gap symbol, excluding the duration of listening before speaking, in the total duration corresponding to the symbol.
  • the generating the cyclic prefix extension according to the configuration information, the cyclic prefix extension type, and the number of gap symbols includes: determining, according to the configuration information, that the target symbol is the current time slot N symbols adjacent to the first gap symbol and located after the first gap symbol in the N symbols; according to the cyclic prefix extension type, determine the duration of listening before speaking; between the first gap symbol and the target In the total duration corresponding to the symbol, the duration of listening before speaking is excluded, and the remaining duration is combined with the cyclic prefix of the N+1 th symbol after the first gap symbol to generate the cyclic prefix extension.
  • the generating the cyclic prefix extension according to the configuration information, the cyclic prefix extension type, and the number of gap symbols includes: determining, according to the configuration information, that the target symbol is the current time slot N symbols adjacent to the first gap symbol and located before the second gap symbol; determine the duration of listening before speaking according to the cyclic prefix extension type; between the second gap symbol and the target
  • the cyclic prefix extension is generated by combining the remaining duration with the cyclic prefix of the first symbol after the second gap symbol, excluding the duration of listening before speaking, in the total duration corresponding to the symbol.
  • the first symbol after the second gap symbol is the first symbol of the next time slot, and the next time slot slot is adjacent to the current slot.
  • the generating the cyclic prefix extension according to the configuration information, the cyclic prefix extension type, and the number of gap symbols includes: determining, according to the configuration information, that the target symbol is the current time slot N symbols adjacent to the first gap symbol in the N symbols and located after the second gap symbol; according to the cyclic prefix extension type, determine the duration of listening before speaking; between the second gap symbol and the target In the total duration corresponding to the symbol, the duration of listening before speaking is excluded, and the remaining duration is combined with the cyclic prefix of the N+1 th symbol after the second gap symbol to generate the cyclic prefix extension.
  • the N symbols after the second gap symbol are the first N symbols of the next time slot, and the second gap symbol is the first N symbols in the next time slot.
  • the N+1 th symbol after the symbol is the N+1 th symbol of the next time slot; the next time slot is adjacent to the current time slot.
  • the receiving configuration information includes any one of the following: receiving downlink control information, and obtaining the configuration information from the downlink control information; receiving high-layer signaling, and obtaining the configuration from the high-layer signaling information.
  • An embodiment of the present invention further provides an indication method for cyclic prefix extension generation, including: generating configuration information, where the configuration information is used to indicate the number N of target symbols borrowed by the user equipment, where the target symbols are used for data transmission The symbol of the information; N ⁇ 1; the configuration information is delivered to the user equipment.
  • An embodiment of the present invention further provides a cyclic prefix extension generation device, including: a receiving unit, configured to receive configuration information; the configuration information is used to indicate the number N of borrowed target symbols, and the target symbols are used for transmission A symbol of data information; N ⁇ 1; a first generating unit, configured to generate the cyclic prefix extension according to the configuration information.
  • An embodiment of the present invention further provides an indication device for cyclic prefix extension generation, including: a second generation unit, configured to generate configuration information, where the configuration information is used to indicate the number N of target symbols borrowed by the user equipment, the The target symbol is a symbol used for transmitting data information; N ⁇ 1; a sending unit, configured to deliver the configuration information to the user equipment.
  • An embodiment of the present invention further provides a computer-readable storage medium, where the computer-readable storage medium is a non-volatile storage medium or a non-transitory storage medium, on which a computer program is stored, and the computer program is executed by a processor At runtime, the steps of any one of the foregoing cyclic prefix extension generation methods are executed, or the steps of the foregoing cyclic prefix extension generation indication method are executed.
  • An embodiment of the present invention further provides another apparatus for generating a cyclic prefix extension, including a memory and a processor, where the memory stores a computer program that can be run on the processor, and when the processor runs the computer program Perform the steps of any of the foregoing cyclic prefix extension generation methods.
  • An embodiment of the present invention further provides an indication device generated by cyclic prefix extension, including a memory and a processor, where the memory stores a computer program that can be run on the processor, and the processor runs the computer program When executing the above-mentioned steps of the indication method generated by cyclic prefix extension.
  • the number N of target symbols is determined. According to the configuration information, it can be determined which target symbols are used, and then a cyclic prefix extension is generated according to the determined target symbols. Thus, the scheme in this application can determine the target symbol used and generate a cyclic prefix extension.
  • FIG. 1 is a flowchart of a method for generating a cyclic prefix extension in an embodiment of the present invention
  • FIG. 2 is a schematic diagram of a symbol distribution corresponding to a time slot in side link communication
  • FIG. 3 is a schematic diagram of the distribution of symbols corresponding to a time slot in another side link communication
  • FIG. 4 is a schematic diagram of a cyclic prefix extension generation in an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of another cyclic prefix extension generation in an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of a cyclic prefix extension generation in an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of another cyclic prefix extension generation in an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of a cyclic prefix extension generation in an embodiment of the present invention.
  • FIG. 9 is a schematic diagram of another cyclic prefix extension generation in an embodiment of the present invention.
  • FIG. 10 is a schematic diagram of a cyclic prefix extension generation in an embodiment of the present invention.
  • FIG. 11 is a schematic diagram of another cyclic prefix extension generation in an embodiment of the present invention.
  • FIG. 12 is a schematic diagram of a cyclic prefix extension generation in an embodiment of the present invention.
  • FIG. 13 is a schematic diagram of another cyclic prefix extension generation in an embodiment of the present invention.
  • FIG. 14 is a schematic diagram of a cyclic prefix extension generation in an embodiment of the present invention.
  • 15 is a schematic diagram of another cyclic prefix extension generation in an embodiment of the present invention.
  • FIG. 16 is a schematic structural diagram of an apparatus for generating a cyclic prefix extension according to an embodiment of the present invention.
  • the number N of target symbols is determined from the received configuration information. According to the configuration information, it can be determined which target symbols are used, and then a cyclic prefix extension is generated according to the determined target symbols. Thus, the scheme in this application can determine the target symbol used and generate a cyclic prefix extension.
  • An embodiment of the present invention provides a method for generating a cyclic prefix extension. Referring to FIG. 1 , the following describes in detail through specific steps.
  • the cyclic prefix extension generation method provided by the following steps S101 to S102 may be executed by the user equipment. Specifically, the following steps S101 to S102 may be performed by a baseband chip in the user equipment, or performed by a chip module including a baseband chip in the user equipment.
  • Step S101 receiving configuration information.
  • the configuration information may be used to indicate the number N of borrowed symbols.
  • the configuration information can be issued by the base station through high-level signaling, can also be issued by downlink control information (Downlink Control Information, DCI), or can be issued by other types of signaling such as MAC CE.
  • DCI Downlink Control Information
  • the high-layer signaling may be radio resource control (Radio Resource Control, RRC) signaling.
  • the borrowed symbol may be a symbol used for transmitting data information.
  • one slot (slot) contains 14 symbols, which may include one gap symbol (Gap symbol) or two gap symbols.
  • one time slot does not include the Physical Sidelink Feedback Channel (PSFCH)
  • PSFCH Physical Sidelink Feedback Channel
  • one time slot can include one gap symbol; when one time slot includes PSFCH, one time slot can Includes 2 gap symbols.
  • 1 slot not necessarily all 14 symbols can be used for sidelink transmission.
  • the number of symbols that can be configured for side link communication can be configured by high-layer signaling.
  • these symbols that can be used for sidelink communication are referred to as sidelink symbols in the present invention.
  • other side link symbols in 1 slot can be used for side link information transmission.
  • one time slot does not include the PSFCH, except for one gap symbol, the remaining 13 symbols are used to carry the Physical Sidelink Shared Channel (PSSCH).
  • PSSCH Physical Sidelink Shared Channel
  • 1 time slot includes PSFCH, except for 2 gap symbols, part of the remaining 12 symbols can be used to transmit PSSCH, and the other part is used to transmit PSFCH.
  • FIG. 2 a schematic diagram of symbol distribution corresponding to one time slot in side link communication is given.
  • FIG. 3 a schematic diagram of symbol distribution corresponding to a time slot in another side link communication is given.
  • one time slot in side link communication includes 1 gap symbol (Gap), and the remaining 13 symbols are used to carry PSSCH.
  • one time slot in the side link communication includes 2 gap symbols (Gap), two symbols are used to carry the PSFCH, and the remaining 10 symbols are used to carry the PSSCH.
  • the use of gap symbols may be prioritized. If the duration of the gap symbol is not long enough to perform the listen-before-talk operation, the symbol adjacent to the gap symbol for transmitting data information may be borrowed, and the above-mentioned borrowed symbol is simply referred to as the target symbol.
  • Step S102 Generate the cyclic prefix extension according to the configuration information.
  • the cyclic prefix extension may be generated according to the received configuration information. It can be known from the above embodiment that the number of gap symbols corresponding to one time slot in side link communication may be one or two, therefore, the number of gap symbols corresponding to one time slot may be obtained first. Afterwards, the cyclic prefix extension is generated according to the configuration information, the cyclic prefix extension type and the number of gap symbols.
  • the number of target symbols corresponding to one time slot is 1, the number of target symbols is determined according to the value of Ci carried in the configuration information, and which symbols need to be borrowed. Adjacent to the gap symbol, and both are located before the gap symbol, or both are located after the gap symbol.
  • the duration of listening before talking can be determined.
  • the cyclic prefix extension types may include the following types: C1 type, C2 type, C3 type and C4 type, where the time domain length (duration) corresponding to the C1 type is symbol_length-16 ⁇ s, and the time corresponding to the C2 type The domain length is symbol_length-25 ⁇ s, the time domain length corresponding to the C3 type is symbol_length-16 ⁇ s-TA, and the time domain length corresponding to the C4 type is symbol_length-25 ⁇ s-TA. All of the above CPE types may be supported in sidelink, or only some of them may be supported. Which Ci type cyclic prefix extension is supported can be indicated by higher layer signaling, or DCI, or MAC-CE.
  • a corresponding listening-before-speaking duration may be determined according to the cyclic prefix extension type. For example, corresponding to the cyclic prefix extension of type C1, the corresponding listening-before-speaking duration is 16 ⁇ s; correspondingly, corresponding to the cyclic prefix extension of C2 type, the corresponding listening-before-speaking duration is 25 ⁇ s; corresponding to C3 Type cyclic prefix extension, the corresponding listening-before-speaking duration is 16 ⁇ s; correspondingly, corresponding to the C4 type cyclic prefix extension, the corresponding listening-before-speaking duration is 25 ⁇ s.
  • the configuration information delivered by the base station may carry values corresponding to different cyclic prefix extension types.
  • the value corresponding to a certain cyclic prefix extension type is 1, the number of target symbols is 0, that is, no target symbols are required. It should be noted that the target symbol can no longer be used to transmit PSSCH or PSFCH.
  • the total duration T corresponding to the gap symbols and the target symbols can be determined.
  • the first T1 duration is used for listening before speaking, and the remaining T-T1 duration is compared with the cyclic prefix in the next symbol used to transmit data information. combined to generate a cyclic prefix extension.
  • the target symbol cannot be used for PSSCH or PSFCH transmission.
  • the target symbol may be the N symbols before the last symbol, or the first N symbols of the adjacent next time slot. If the target symbol is the N symbols before the last symbol, in the total duration of the gap symbol and the adjacent N symbols before it, remove the duration occupied by listen-before-talk and/or TA, and the remaining The duration is combined with the cyclic prefix of the first symbol of the next time slot to generate a cyclic prefix extension; if the target symbol is the first N symbols of the adjacent next time slot, when the gap symbol and the adjacent next time slot From the total duration of the first N symbols of the slot, remove the duration occupied by listen-before-talk and/or TA, and combine the remaining duration with the cyclic prefix of the N+1th symbol of the next slot to generate a cyclic prefix extension .
  • the gap symbol is set to be the last symbol of slot 1, and the target symbol is one symbol before the last symbol, that is, the gap symbol is the one in slot 1.
  • the 14th symbol, the target symbol is the 13th symbol in slot 1.
  • the duration occupied by listening first and then speaking, and listening first and then speaking is 16 ⁇ s, and the remaining time is the same as that of the first symbol of the adjacent next slot.
  • the cyclic prefixes are combined to generate a cyclic prefix extension. At this time, the thirteenth symbol in the time slot may not be used to carry data information.
  • the gap symbol is set to be located in the last symbol of time slot 1, and the target symbol is the first symbol of the adjacent next time slot, that is, the gap symbol is the 14th symbol in slot 1, and the target symbol is the 1st symbol in slot 2.
  • the time occupied by listening first and then talking, listening first and then talking is 25 ⁇ s, and the remaining time is the same as the cyclic prefix of the second symbol of time slot 2.
  • the number of target symbols corresponding to one time slot is 2
  • the number of target symbols is determined according to the specific value of the Ci type carried in the configuration information, and then it is determined which symbols need to be borrowed.
  • the target symbol is adjacent to the gap symbol, either before the gap symbol, or both after the gap symbol.
  • the target symbol when the number of gap symbols corresponding to one time slot is 2, the target symbol may be adjacent to and before the first gap symbol, and the target symbol may also be the same as the first gap symbol. adjacent to and after the first gap symbol.
  • the target symbol may also be adjacent to the second gap symbol and located before the second gap symbol, and the target symbol may also be adjacent to the second gap symbol and located after the second gap symbol.
  • the subcarrier spacing is set to 60KHz, and the cyclic prefix extension type is C2 type. In practical applications, when the subcarrier spacing is 60KHz, among the 14 symbols corresponding to one time slot, the duration of the first symbol is 18.36 ⁇ s, and the duration of the remaining 13 symbols is 17.84 ⁇ s.
  • FIG. 14 a schematic diagram of generating a cyclic prefix extension in an embodiment of the present invention is given.
  • FIG. 15 a schematic diagram of another cyclic prefix extension generation in an embodiment of the present invention is given.
  • the value of the C2 type carried in the configuration information is set to 2, and then the number of target symbols is determined to be 1.
  • the gap symbol is located in the 14th symbol of slot 1, and the target symbol is determined to be the 13th symbol of slot 1.
  • the first 25 ⁇ s duration is used for LBT operation, and the remaining time is generated with the cyclic prefix in the first symbol of slot 2. Cyclic prefix extension .
  • the value of the C2 type carried in the configuration information is set to 2, and then the number of target symbols is determined to be 1.
  • the slot symbol is located in the 14th symbol of slot 1, and the target symbol is determined to be the first symbol of slot 2.
  • the first 25 ⁇ s duration is used for LBT operation, and the remaining time corresponds to the cyclic prefix in the second symbol in slot 2 Generate cyclic prefix expansion.
  • the subcarrier spacing is set to 60KHz, and the cyclic prefix extension type is C3 type. In practical applications, when the subcarrier spacing is 60KHz, among the 14 symbols corresponding to one time slot, the duration of the first symbol is 18.36 ⁇ s, and the duration of the remaining 13 symbols is 17.84 ⁇ s.
  • FIG. 4 a schematic diagram of generating a cyclic prefix extension in an embodiment of the present invention is given.
  • a schematic diagram of another cyclic prefix extension generation in an embodiment of the present invention is given.
  • the cyclic prefix extension type is the C3 type, and the value of the C3 type carried in the configuration information is set to 2, then the number of target symbols is determined to be 1. It is determined that the target symbol is adjacent to and before the first gap symbol, the first gap symbol is the 11th symbol in time slot 1, and the target symbol is the 10th symbol in time slot 1. In the total duration corresponding to the 10th symbol and the 11th symbol in time slot 1, the duration of the first 16 ⁇ s+TA is used for LBT and TA operations, and the remaining time is related to the 12th symbol (that is, the first 16 ⁇ s+TA in the timing sequence).
  • the cyclic prefix in the symbols occupied by the PSFCH generates a cyclic prefix extension.
  • the cyclic prefix extension type is the C3 type, and the value of the C3 type carried in the configuration information is set to 2, and the number of target symbols is determined to be 1. It is determined that the target symbol is adjacent to and after the first gap symbol, the first gap symbol is the 11th symbol in time slot 1, and the target symbol is the 12th symbol in time slot 1. In the total duration corresponding to the 11th symbol and the 12th symbol in time slot 1, the duration of the first 16 ⁇ s+TA is used for LBT and TA operations, and the remaining time is related to the 13th symbol (that is, the first 16 ⁇ s+TA in the timing sequence).
  • the cyclic prefix in the symbols occupied by the PSFCH generates a cyclic prefix extension.
  • FIG. 6 a schematic diagram of generating a cyclic prefix extension in an embodiment of the present invention is given.
  • FIG. 7 a schematic diagram of another cyclic prefix extension generation in an embodiment of the present invention is given.
  • the cyclic prefix extension type is the C3 type, and the value of the C3 type carried in the configuration information is set to 2, and the number of target symbols is determined to be 1. It is determined that the target symbol is adjacent to and before the second gap symbol, the second gap symbol is the 14th symbol in the slot 1, and the target symbol is the 13th symbol in the slot 1. In the total duration corresponding to the 13th symbol and the 14th symbol in slot 1, the duration of the first 16 ⁇ s+TA is used for LBT and TA operations, and the remaining time is the same as the cyclic prefix in the first symbol in slot 2. Generate cyclic prefix expansion.
  • the cyclic prefix extension type is the C3 type, and the value of the C3 type carried in the configuration information is set to 2, then the number of target symbols is determined to be 1. It is determined that the target symbol is adjacent to and after the second gap symbol, the second gap symbol is the 14th symbol in time slot 1, and the target symbol is the first symbol in time slot 2. In the total duration corresponding to the 14th symbol in slot 1 and the first symbol in slot 2, the first 16 ⁇ s+TA duration is used for LBT and TA operations, and the remaining time is the same as that of the second symbol in slot 2.
  • a cyclic prefix in a symbol generates a cyclic prefix extension.
  • the positions of the target symbols selected in different time slots may be the same or different.
  • the solution shown in FIG. 4 can be combined with the solution shown in FIG. 6 , that is, the solution shown in FIG. 4 is used in some time slots, and the solution shown in FIG. 6 is used in another part of time slots. plan.
  • the selected target symbol is adjacent to and before the first slot symbol; in slot 2, the selected target symbol is the same as the first slot symbol (the first slot symbol in slot 2). gap symbol) adjacent to and after the first gap symbol.
  • the solution shown in FIG. 4 is combined with the solution shown in FIG. 7 , that is, the solution shown in FIG. 4 is used in some time slots, and the solution shown in FIG. 4 is used in another part of the time slots.
  • FIG. 8 a schematic diagram of generating a cyclic prefix extension in an embodiment of the present invention is given.
  • a schematic diagram of another cyclic prefix extension generation in an embodiment of the present invention is given.
  • the cyclic prefix extension type is the C2 type, and the value of the C2 type carried in the configuration information is set to 2, then the number of target symbols is determined to be 1. It is determined that the target symbol is adjacent to and before the first gap symbol, the first gap symbol is the 11th symbol in time slot 1, and the target symbol is the 10th symbol in time slot 1. In the total duration corresponding to the 10th symbol and the 11th symbol in time slot 1, the first 25 ⁇ s duration is used for LBT, and the remaining time corresponds to the 12th symbol (that is, the symbol occupied by the first PSFCH in the timing sequence). ) in a cyclic prefix generates a cyclic prefix extension.
  • the cyclic prefix extension type is C2 type, and the value of the C2 type carried in the configuration information is set to 2, then the number of target symbols is determined to be 1. It is determined that the target symbol is adjacent to and after the first gap symbol, the first gap symbol is the 11th symbol in time slot 1, and the target symbol is the 12th symbol in time slot 1. In the total duration corresponding to the 11th symbol and the 12th symbol in time slot 1, the first 25 ⁇ s duration is used for LBT, and the remaining time corresponds to the 13th symbol (that is, the symbol occupied by the first PSFCH in the timing sequence). ) in the cyclic prefix generates a cyclic prefix extension.
  • FIG. 10 a schematic diagram of generating a cyclic prefix extension in an embodiment of the present invention is given.
  • FIG. 11 a schematic diagram of another cyclic prefix extension generation in an embodiment of the present invention is given.
  • the cyclic prefix extension type is the C2 type, and the value of the C2 type carried in the configuration information is set to 2, then the number of target symbols is determined to be 1. It is determined that the target symbol is adjacent to and before the second gap symbol, the second gap symbol is the 14th symbol in the slot 1, and the target symbol is the 13th symbol in the slot 1. Among the total durations corresponding to the 13th symbol and the 14th symbol in slot 1, the first 25 ⁇ s duration is used for LBT, and the remaining time and the cyclic prefix in the first symbol in slot 2 generate cyclic prefix extension.
  • the cyclic prefix extension type is C2 type, and the value of the C2 type carried in the configuration information is set to 2, then the number of target symbols is determined to be 1. It is determined that the target symbol is adjacent to and after the second gap symbol, the second gap symbol is the 14th symbol in time slot 1, and the target symbol is the first symbol in time slot 2. Of the total duration corresponding to the 14th symbol in slot 1 and the first symbol in slot 2, the first 25 ⁇ s duration is used for LBT, and the remaining time corresponds to the cycle in the second symbol in slot 2 Prefix generates cyclic prefix extension.
  • the positions of the target symbols selected in different time slots may be the same or different.
  • the solution shown in FIG. 8 can be combined with the solution shown in FIG. 10 , that is, the solution shown in FIG. 8 is used in some time slots, and the solution shown in FIG. 10 is used in another part of time slots. plan.
  • the selected target symbol is adjacent to and before the first slot symbol; in slot 2, the selected target symbol is the same as the first slot symbol (the first slot symbol in slot 2). gap symbol) adjacent to and after the first gap symbol.
  • the solution shown in FIG. 8 is combined with the solution shown in FIG. 11 , that is, the solution shown in FIG. 8 is used in some time slots, and the solution shown in FIG. 8 is used in other time slots Scheme shown in 11.
  • the cyclic prefix extension type is C1 type
  • time slot 1 includes symbols carrying PSFCH
  • the subcarrier spacing is 60KHz
  • the duration corresponding to one gap symbol is 17.84 ⁇ s.
  • the first gap symbol (that is, the 11th symbol of slot 1) is selected for listening first and then speaking.
  • the time required for listening first and then speaking is 16 ⁇ s, then the remaining 1.84 ⁇ s is composed of the cyclic prefix of the 12th symbol. Cyclic prefix expansion.
  • FIG. 13 a schematic diagram of yet another cyclic prefix extension generation in an embodiment of the present invention is given.
  • the cyclic prefix extension type is C1 type
  • time slot 1 includes symbols carrying PSFCH
  • the subcarrier spacing is 60KHz
  • the duration corresponding to one gap symbol is 17.84 ⁇ s.
  • the second slot symbol (that is, the 14th symbol of slot 1) is selected for listening first and then speaking.
  • the duration required for listening first and then speaking is 16 ⁇ s, then the remaining 1.84 ⁇ s is combined with the first time slot
  • the cyclic prefix of each symbol constitutes a cyclic prefix extension.
  • a schematic diagram of cyclic prefix extension generation is given when the cyclic prefix extension type is C2 type and C3 type. It can be understood that, for the C1 type and the C4 type of the cyclic prefix extension, the description of the generation of the cyclic prefix extension may refer to the above-mentioned C2 type and C3 type, which is not repeated in this embodiment of the present invention.
  • C1 type reference may be made to the C2 type; for the C4 type, reference may be made to the C3 type.
  • An embodiment of the present invention also provides an indication method for cyclic prefix extension generation, including: generating configuration information; and delivering the configuration information to user equipment.
  • the configuration information is used to indicate the number N of target symbols borrowed by the user equipment, where the target symbols are symbols used for transmitting data information; N ⁇ 1.
  • the above-mentioned instruction method generated by cyclic prefix extension can be executed by the sending end device, or can be executed by a chip with data processing capability (such as a data signal processing chip) in the sending end device, or by the sending end device. Executed by a chip module including a chip with data processing capability.
  • the transmitting end device may be a user equipment or a base station device.
  • the configuration information may be used to indicate the number N of borrowed symbols.
  • the configuration information may be issued by the base station through high-level signaling, or may be issued by downlink control information (Downlink Control Information, DCI), or may be issued by other types of signaling such as MAC CE.
  • DCI Downlink Control Information
  • MAC CE MAC CE
  • the high-level signaling may be radio resource control (Radio Resource Control, RRC) signaling.
  • a cyclic prefix extension generating apparatus 160 in an embodiment of the present invention is given, including: a receiving unit 161 and a first generating unit 162, wherein:
  • a receiving unit 161 configured to receive configuration information; the configuration information is used to indicate the number N of borrowed target symbols, and the target symbols are symbols used to transmit data information; N ⁇ 1;
  • the first generating unit 162 is configured to generate the cyclic prefix extension according to the configuration information.
  • the specific execution process of the foregoing receiving unit 161 and the first generating unit 162 may refer to the foregoing steps S101 to S102, which are not described repeatedly in this embodiment of the present invention.
  • the above-mentioned cyclic prefix extension generating apparatus 160 may correspond to a chip with a data processing function in the user equipment, such as a baseband chip; or correspond to a chip module including a chip with a data processing function in the user equipment, or correspond to user equipment.
  • An embodiment of the present invention further provides an instructing device for cyclic prefix extension generation, including: a second generating unit and a sending unit, wherein: the second generating unit is configured to generate configuration information, where the configuration information is used to instruct the user equipment to borrow The number N of target symbols is N, the target symbols are symbols used to transmit data information; N ⁇ 1; a sending unit, configured to deliver the configuration information to the user equipment.
  • an instructing device for cyclic prefix extension generation including: a second generating unit and a sending unit, wherein: the second generating unit is configured to generate configuration information, where the configuration information is used to instruct the user equipment to borrow The number N of target symbols is N, the target symbols are symbols used to transmit data information; N ⁇ 1; a sending unit, configured to deliver the configuration information to the user equipment.
  • the indication device generated by the above-mentioned cyclic prefix extension may correspond to a chip with a data processing function in the sending end device, such as a digital signal processing chip, or correspond to a chip module including a data processing function chip in the sending end device , or corresponding to the sender device.
  • An embodiment of the present invention further provides a computer-readable storage medium, where the computer-readable storage medium is a non-volatile storage medium or a non-transitory storage medium, on which a computer program is stored, and the computer program is executed by a processor At runtime, the steps of any one of the above-mentioned methods for generating a cyclic prefix extension are performed, or the steps of the above-mentioned method for generating an indication of cyclic prefix extension are performed.
  • An embodiment of the present invention further provides another apparatus for generating a cyclic prefix extension, including a memory and a processor, where the memory stores a computer program that can be run on the processor, and when the processor runs the computer program Perform the steps of the cyclic prefix extension generation method described in the above embodiment.
  • An embodiment of the present invention further provides an indication device generated by cyclic prefix extension, including a memory and a processor, where the memory stores a computer program that can be run on the processor, and the processor runs the computer program At the same time, the steps of the indication method for generating the cyclic prefix extension described in the above embodiment are executed.
  • each module/unit included in each device and product described in the above embodiments it may be a software module/unit, a hardware module/unit, or a part of a software module/unit, a part of which is a software module/unit. is a hardware module/unit.
  • each module/unit included therein may be implemented by hardware such as circuits, or at least some of the modules/units may be implemented by a software program.
  • Running on the processor integrated inside the chip the remaining (if any) part of the modules/units can be implemented by hardware such as circuits; for each device and product applied to or integrated in the chip module, the modules/units contained therein can be They are all implemented by hardware such as circuits, and different modules/units can be located in the same component of the chip module (such as chips, circuit modules, etc.) or in different components, or at least some of the modules/units can be implemented by software programs.
  • the software program runs on the processor integrated inside the chip module, and the remaining (if any) part of the modules/units can be implemented by hardware such as circuits; for each device and product applied to or integrated in the terminal, each module contained in it
  • the units/units may all be implemented in hardware such as circuits, and different modules/units may be located in the same component (eg, chip, circuit module, etc.) or in different components in the terminal, or at least some of the modules/units may be implemented by software programs Realization, the software program runs on the processor integrated inside the terminal, and the remaining (if any) part of the modules/units can be implemented in hardware such as circuits.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé et un appareil de génération et d'indication d'extension de préfixe cyclique (CPE), et un support de stockage lisible. Le procédé consiste à : recevoir des informations de configuration, les informations de configuration étant utilisées pour indiquer le nombre N de symboles cibles qui sont empruntés, les symboles cibles étant des symboles utilisés pour transmettre des informations de données, et N ≥ 1 ; et générer un CPE selon les informations de configuration. Selon la solution, des symboles cibles requis pour générer un CPE peuvent être déterminés, et le CPE peut être généré.
PCT/CN2022/075441 2021-02-08 2022-02-08 Procédé et appareil de génération et d'indication d'extension de préfixe cyclique, et support de stockage lisible WO2022166975A1 (fr)

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