WO2022237672A1 - 一种信息反馈的方法以及装置 - Google Patents

一种信息反馈的方法以及装置 Download PDF

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Publication number
WO2022237672A1
WO2022237672A1 PCT/CN2022/091396 CN2022091396W WO2022237672A1 WO 2022237672 A1 WO2022237672 A1 WO 2022237672A1 CN 2022091396 W CN2022091396 W CN 2022091396W WO 2022237672 A1 WO2022237672 A1 WO 2022237672A1
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Prior art keywords
indication information
terminal device
time unit
time
network device
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PCT/CN2022/091396
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English (en)
French (fr)
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焦淑蓉
花梦
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华为技术有限公司
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Publication of WO2022237672A1 publication Critical patent/WO2022237672A1/zh

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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
    • H04L5/0055—Physical resource allocation for ACK/NACK
    • 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
    • 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
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling

Definitions

  • the present application relates to the communication field, and, more specifically, to an information feedback method and device.
  • PDCH physical downlink control channel
  • PDSCH physical downlink shared channel
  • PUSCH Physical uplink shared channel
  • the terminal device can analyze the scheduling information of the uplink/downlink data, and perform data transmission on the corresponding PDSCH/PUSCH according to the scheduling information.
  • the user equipment may receive PDCCH errors, such as incorrect Receive downlink control information (DCI) for scheduling the initial transmission of TB, and then there will be an error that the network device still retransmits the PDSCH multiple times after the terminal device does not receive the DCI for the initial transmission. Therefore, there is a need for a method and device for information feedback, so as to alleviate the above-mentioned problems.
  • PDCCH errors such as incorrect Receive downlink control information (DCI) for scheduling the initial transmission of TB
  • DCI Receive downlink control information
  • This application provides a method and device for information feedback, which can enable a terminal device to judge and feed back whether it has received the scheduled transmission block (Transport block, TB) retransmission after receiving the downlink control information (Downlink control information, DCI).
  • the DCI initially transmitted by the TB so that the network device can accurately obtain the reception status of the terminal device for the DCI initially transmitted by the scheduled TB, and then make adjustments to the scheduling of the TB to prevent the terminal device from receiving the DCI initially transmitted.
  • Network equipment still retransmits PDSCH error conditions many times, thereby improving network performance.
  • a method for information feedback including: a terminal device receives first indication information sent by a network device, and the first indication information is used to schedule retransmission of a transport block TB; the terminal device judges whether the first indication information has been received Two indication information, wherein, the second indication information is used to schedule the initial transmission of the TB; the terminal equipment sends third indication information to the network equipment, and the third indication information is used to indicate whether the terminal equipment has received the second Instructions.
  • the terminal device may send the third indication information to the network device, so as to inform the network device whether to receive the second indication information. If the third indication information indicates that the terminal device has not received the second indication information, the network device may adjust the scheduling of the TB to prevent the network device from sending and scheduling the TB retransmission multiple times after the terminal device has not received the second indication information error conditions, thereby improving network performance.
  • the terminal device does not receive the second indication information, it cannot obtain the transport block size (Transport block size, TBS) information of the TB, and cannot decode it correctly, even if it receives multiple retransmitted TBs, it cannot decode success. Therefore, after the network device receives the third indication information indicating that the terminal device has not received the second indication information, it may send the scheduling information for scheduling the initial transmission of the TB, and send the TB in the form of initial transmission. Therefore, the terminal device can obtain the TBS information of the TB, which improves the accuracy of decoding; at the same time, the terminal device can correctly receive the TB in the retransmission scheduling mode, which improves the success rate of self-decoding.
  • TBS Transport block size
  • the terminal device judging whether the second indication information has been received includes: if the preset condition is met, the terminal device judges that the second indication information has not been received , wherein the preset condition includes at least one of the following: the terminal device has not received the indication information used to schedule the initial transmission of the TB and the NDI of the first indication information between receiving the fourth indication information and the first indication information The value of and the NDI value of the fourth indication information are reversed, and the hybrid automatic repeat request (Hybrid auto repeat request, HARQ) process number of the first indication information is the same as the HARQ process number of the fourth indication information, wherein , the fourth indication information is used to schedule the initial transmission or retransmission of the previous TB of the TB, and the reception time of the fourth indication information is earlier than the reception time of the first indication information.
  • the preset condition includes at least one of the following: the terminal device has not received the indication information used to schedule the initial transmission of the TB and the NDI of the first indication information between receiving the fourth indication information and
  • the time interval between the end moment when the terminal device receives the first indication information and the start time when the terminal device sends the third indication information is greater than or equal to The first time period, the first time period is less than or equal to the second time period, the second time period is the end moment when the terminal equipment receives the downlink shared physical channel PDSCH and sends the hybrid automatic repeat request response HARQ corresponding to the TB carried on the PDSCH- The minimum time between the start moments of ACK messages.
  • the terminal device sending the third indication information to the network device includes: the terminal device sending the third indication information to the network device in a first time unit, wherein, the first time unit is the time unit for sending the HARQ-ACK information corresponding to the retransmission TB scheduled by the first indication information, or, the first time unit is the time unit according to the time unit offset indication information and the terminal equipment receiving the first time unit A time unit index of the indication information is determined, the time unit offset indication information indicates the offset of the time unit, or, the first time unit is determined according to the time unit of the terminal device receiving the first indication information and the second time unit determined for a period of time.
  • the first time unit is determined according to the first indication information and the time unit index at which the terminal device receives the first indication information, wherein, The time unit offset indication information is included in the first indication information.
  • the first time unit is the time corresponding to the time unit index at which the terminal device receives the first indication information and the time unit index at which the time unit offset is superimposed unit.
  • the first time unit is determined according to the time unit for receiving the first indication information by the terminal device and the first period, the first time The unit is the first uplink time unit after the end moment when the terminal device receives the first indication information is superimposed with the first time period.
  • the third indication information corresponds to the same PUCCH as the HARQ-ACK information corresponding to the retransmission TB scheduled by the first indication information.
  • an information feedback method including: a network device sends first indication information to a terminal device, and the first indication information is used to schedule TB retransmission; the network device receives the third indication information sent by the terminal device. indication information, the third indication information is used to indicate whether the terminal device has received the second indication information, wherein the second indication information is used to schedule the initial transmission of the TB, and the sending time of the second indication information is earlier than the first - indicates the sending time of the message.
  • the network device sends fourth indication information to the terminal device, where the fourth indication information is used to schedule initial transmission or retransmission of a previous TB of the TB.
  • the network device receiving the third indication information sent by the terminal device includes: the network device receiving the third indication information sent by the terminal device in a first time unit information, wherein the first time unit is the time unit for sending the HARQ-ACK information corresponding to the retransmission TB scheduled by the first indication information, or the first time unit is the time unit received from the terminal device according to the time unit offset indication information
  • the time unit index of the first indication information is determined, the time unit offset indication information indicates the offset of the time unit, or, the first time unit is based on the time unit and the time unit that the terminal device receives the first indication information
  • the first time period is determined.
  • the time The cell offset indication information is included in the first indication information.
  • the first time unit is the time corresponding to the time unit index at which the terminal device receives the first indication information and the time unit index at which the time unit offset is superimposed unit.
  • the first time unit when the first time unit is determined according to the time unit for receiving the first indication information by the terminal device and the first period, the first time The unit is the first uplink time unit after the end moment when the terminal device receives the first indication information is superimposed with the first time period.
  • the third indication information corresponds to the same PUCCH as the HARQ-ACK information corresponding to the retransmission TB scheduled by the first indication information.
  • a communication device including a functional module for implementing the method in any possible implementation manner of the foregoing first aspect.
  • a communication device including a functional module for implementing the method in any possible implementation manner of the aforementioned second aspect.
  • a communication device including a processor and an interface circuit, and the interface circuit is used to receive signals from other communication devices other than the communication device and transmit them to the processor or send signals from the processor
  • the processor implements the method in any possible implementation manner of the foregoing first aspect through a logic circuit or by executing code instructions.
  • a communication device including a processor and an interface circuit, the interface circuit is used to receive signals from other communication devices other than the communication device and transmit them to the processor or transmit signals from the processor Sending to other communication devices other than the communication device, the processor implements the method in any possible implementation manner of the aforementioned second aspect through a logic circuit or by executing code instructions.
  • a computer-readable storage medium is provided, and a computer program or instruction is stored in the computer-readable storage medium.
  • the computer program or instruction is executed, any possible implementation manner of the foregoing first aspect is realized. Methods.
  • a computer-readable storage medium in which a computer program or instruction is stored, and when the computer program or instruction is executed, any possible implementation manner of the foregoing second aspect is realized.
  • a computer program product including instructions is provided, and when the instructions are executed, the method in any possible implementation manner of the aforementioned first aspect is implemented.
  • a computer program product containing instructions is provided, and when the instructions are executed, the method in any possible implementation manner of the aforementioned second aspect is implemented.
  • a computer program includes codes or instructions, and when the codes or instructions are executed, the method in any possible implementation manner of the aforementioned first aspect is implemented.
  • a computer program in a twelfth aspect, includes codes or instructions, and when the codes or instructions are executed, the method in any possible implementation manner of the foregoing second aspect is implemented.
  • a chip system includes a processor and may further include a memory, configured to implement the method in any possible implementation manner of the aforementioned first aspect.
  • the system-on-a-chip may consist of chips, or may include chips and other discrete devices.
  • a chip system in a fourteenth aspect, includes a processor and may further include a memory, configured to implement the method in any possible implementation manner of the aforementioned second aspect.
  • the system-on-a-chip may consist of chips, or may include chips and other discrete devices.
  • a communication system includes the device described in the third aspect or the fourth aspect.
  • FIG. 1 is a schematic diagram of a wireless communication system 100 applicable to an embodiment of the present application.
  • FIG. 2 is a schematic diagram of a wireless communication system 200 applicable to an embodiment of the present application.
  • Fig. 3 is a schematic diagram of encoded bits of different redundancy versions applicable to the embodiment of the present application.
  • FIG. 4 is a schematic diagram of a communication method 400 proposed by an embodiment of the present application.
  • Fig. 5 is a schematic block diagram of a communication device 500 provided by an embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of a communication device 600 provided by an embodiment of the present application.
  • Fig. 7 is a schematic structural diagram of a simplified terminal device applicable to the embodiment of the present application.
  • Fig. 8 is a schematic structural diagram of a simplified base station applicable to the embodiment of the present application.
  • the technical solutions of the embodiments of the present application can be applied to various communication systems, such as: the fifth generation (5th generation, 5G) system or new radio (new radio, NR), long term evolution (long term evolution, LTE) system, LTE frequency Division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD), universal mobile telecommunications system (universal mobile telecommunications system, UMTS), etc.
  • cloud video source codec, rendering, etc. network transmission including LTE, NR and the core network and access network of the sixth generation system (6th generation, 6G) air interface, terminal head-mounted display virtual reality (Virtual reality, VR) glasses and other equipment .
  • FIG. 1 is a schematic diagram of a wireless communication system 100 applicable to an embodiment of the present application.
  • the wireless communication system 100 may include at least one network device, such as the network device 111 shown in Figure 1, and the wireless communication system 100 may also include at least one terminal device, such as the terminal device 121 shown in Figure 1 to the terminal device 123. Both the network device and the terminal device can be configured with multiple antennas, and the network device and the terminal device can communicate using the multi-antenna technology.
  • FIG. 2 is another schematic diagram of a wireless communication system 200 applicable to the embodiment of the present application.
  • the wireless communication system 100 may include at least one terminal device, such as the terminal device 211 shown in Figure 2, and the wireless communication system 100 may also include at least one network device, such as the network device 221 shown in Figure 2 to network device 223. Both network devices and terminal devices can be configured with multiple antennas, and network devices and terminal devices can communicate using multi-antenna technology.
  • FIG. 1 and FIG. 2 are only exemplary illustrations, and the present application is not limited thereto.
  • the network device in the wireless communication system may be any device with a wireless transceiver function.
  • the interface between the network device and the terminal device may be a Uu interface (or called an air interface).
  • Uu interface or called an air interface.
  • the names of these interfaces may remain unchanged, or may be replaced by other names, which is not limited in this application.
  • a network device is an access device for a terminal device to access a mobile communication system through wireless means.
  • the next generation base station (next generation NodeB, gNB), the base station in the future mobile communication system or the access node in the WiFi system, etc.
  • a network device may include a centralized unit (Centralized unit, CU), or a distributed unit (Distributed unit, DU), or include a CU and a DU.
  • the functions of the network device may also be realized by multiple network function entities, and each network function entity is used to realize part of the functions of the network device.
  • These network functional entities may be network elements in hardware devices, software functions running on dedicated hardware, or virtualized functions instantiated on a platform (for example, a cloud platform).
  • the terminal device involved in the embodiment of the present application includes a device that provides voice and/or data connectivity to a user, for example, may include a handheld device with a wireless connection function, or a processing device connected to a wireless modem.
  • the terminal device can communicate with the core network via a radio access network (radio access network, RAN), and exchange voice and/or data with the RAN.
  • radio access network radio access network
  • the terminal equipment may include user equipment (user equipment, UE), wireless terminal equipment, mobile terminal equipment, device-to-device communication (device-to-device, D2D) terminal equipment, vehicle to everything (vehicle to everything, V2X) terminal equipment , machine-to-machine/machine-type communications (machine-to-machine/machine-type communications, M2M/MTC) terminal equipment, Internet of things (internet of things, IoT) terminal equipment, subscriber unit, subscriber station, mobile station, remote station , access point (access point, AP), remote terminal, access terminal, user terminal, user agent, or user equipment, etc.
  • IoT Internet of things
  • it may include mobile phones (or “cellular” phones), computers with mobile terminal equipment, portable, pocket, hand-held, computer built-in mobile devices, and the like.
  • PCS personal communication service
  • cordless telephone cordless telephone
  • session initiation protocol session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistant
  • constrained devices such as devices with low power consumption, or devices with limited storage capabilities, or devices with limited computing capabilities, etc.
  • it includes barcodes, radio frequency identification (radio frequency identification, RFID), sensors, global positioning system (global positioning system, GPS), laser scanners and other information sensing devices.
  • the UE reads the new data indicator (New data indicator, NDI) field from the DCI, and determines whether the PDSCH scheduled by the DCI carries the initial transmission TB or the retransmission TB according to the information in the NDI field.
  • NDI new data indicator
  • the NDI field is 1 bit; if two TBs are carried on the PDSCH, the NDI field is 2 bits, that is, each bit corresponds to one TB. Therefore, for a TB, the NDI only needs 1 bit, and whether the value of the NDI in the previously received DCI is flipped indicates whether the TB is a new transmission or a retransmission. Assuming that the NDI value of the previously received DCI is 0, if this DCI is a retransmission of a scheduled TB, the value of NDI is still 0; if this DCI is a new transmission of a scheduled TB, the value of NDI is 1 .
  • NDI value of the previously received DCI is 1, if the current DCI is to schedule TB retransmission, the value of NDI is still 1; if this DCI is to schedule a new transmission of TB, the value of NDI is 0.
  • the network device side selects the appropriate MCS value according to the channel conditions and the performance index of the data to be transmitted, and uses the corresponding modulation mode and code rate to encode and modulate the TB block to be transmitted.
  • MCS Modulation and coding scheme
  • TBS Transport block size
  • Redundancy version (Redundancy version, RV): The redundancy version is designed to implement incremental redundancy (Incremental redundancy, IR) hybrid automatic repeat request (Hybrid automatic repeat request, HARQ) transmission, that is, the information bits generated by the encoder Concatenated with redundant bits to form a sequence, each RV defines a transmission start point in a sequence, and different RVs are used for the first transmission and each HARQ retransmission to realize the gradual accumulation of redundant bits and complete incremental redundancy I HARQ operation.
  • IR incremental redundancy
  • Hybrid automatic repeat request Hybrid automatic repeat request
  • HARQ hybrid automatic repeat request
  • the bits after channel coding are rate-matched, that is, repeated or punctured, to match the number of bits of air interface resources.
  • Different redundancy versions may be used for rate matching, and different redundancy versions may contain different channel coded bits.
  • Fig. 3 is a schematic diagram of encoded bits of different redundancy versions applicable to the embodiment of the present application.
  • the code rate of the mother code is 1/3
  • Ncb is the bit length after channel coding
  • the corresponding information bit length is 1/3Ncb
  • the number of air interface bits is 4/3Ncb
  • the coded bits corresponding to different redundancy versions (RV0, RV1, RV2, RV3) are shaded parts in the figure.
  • the information bits before the mother code encoding are called systematic bits, and in the mother code encoding with a code rate of 1/3, the first 1/3 bits in the encoded bit sequence are the systematic bits.
  • self-decoding refers to the bits of this RV version, it is possible to decode successfully without combining the bits of other RV versions
  • the bits of this RV version need to contain all Systematic bits, for the RV version that does not contain all systematic bits, even if the channel condition is good, it is difficult for the UE to decode successfully after receiving it.
  • the bits of RV0 are usually used for transmission to ensure the correctness of the initial transmission as much as possible; and in the retransmission, bits of other RV versions are selected, so that a checksum different from RV0 can be sent. bits, so that the receiving end can obtain as much information as possible after combining the initial transmission and retransmission information, increasing the retransmission efficiency.
  • UE processing capability 1 In NR, two user capabilities (UE processing capability 1 and UE processing capability 2 ).
  • N 1 is the decoding time of PDSCH, as shown in the following table, Table 1 is the value of N 1 in the case of UE processing capability 1; Table 2 is the value of N 1 in the case of UE processing capability 2.
  • the second column of Table 1 is applicable to the scenario where the demodulation reference signal (Demodulation reference signal, DMRS) is preloaded and no additional DMRS is configured
  • the third column is applicable to the scenario where the DMRS is preloaded and the additional DMRS is configured
  • Table 2 corresponds to The UE is a device with strong processing capability, and it is not allowed to configure additional DMRS at this time.
  • the ⁇ in the table corresponds to different subcarrier spacing, 0 means 15kHz, 1 means 30kHz, 2 means 60kHz, 3 means 120kHz. Since the whole process involves the PDSCH carrying downlink data, the PDCCH where the DCI scheduling the PDSCH is located, and the PUCCH or PUSCH where the HARQ-ACK corresponding to the PDSCH is located, the subcarrier spacing of the downlink/uplink carriers where these channels are located may be different. , in this case ⁇ takes the value of the subcarrier spacing that maximizes the value of T proc,1 .
  • d 1,1 is to consider the relaxation of the processing time introduced by the overlapping of PDCCH and PDSCH, because the UE needs to receive the PDCCH first and decode and analyze the DCI carried on the PDCCH before it can obtain the position of the PDSCH and related physical layer parameters, and then The PDSCH is demodulated and decoded, so the overlap of the two will affect the processing speed of the PDSCH.
  • PDSCH mapping relationship B the value of d 1,1 is as follows
  • d 1 , 1 is equal to the number of symbols that the PDSCH overlaps with the PDCCH that schedules the PDSCH;
  • d 1,1 3 otherwise, d 1,1 It is equal to the number of overlapping symbols between the PDSCH and the PDCCH that schedules the PDSCH.
  • d 2 is a parameter introduced when the overlapping of uplink channels with different priorities is considered, and has nothing to do with this application.
  • Text is 1 in the process of shared spectrum channel access, and 0 in other scenarios.
  • the UE may receive errors in the PDCCH and PDSCH.
  • the UE demodulates and decodes the TB carried on the PDSCH and feeds back the corresponding HARQ-ACK information to the network side. If the decoding is successful, an ACK is fed back, and if the decoding fails, a NACK is fed back.
  • the HARQ-ACK information of multiple PDSCHs can be combined and fed back together, that is, the HARQ-ACK codebook (Codebook, CB).
  • the HARQ-ACK codebook Codebook, CB
  • there are two codebooks in the R15 version namely Type-1HARQ-ACK codebook and Type-2HARQ-ACK codebook, which can be called semi-static codebook and dynamic codebook respectively.
  • the user can obtain all possible positions of the PDSCH through the high-level configuration information.
  • the user can give feedback, and feedback ACK when it is received correctly, received incorrectly or not received Then feedback NACK.
  • the user can use the downlink assignment index (DAI) in the downlink control information carried by the PDCCH to determine whether there is a missed detection of the PDCCH used to schedule the PDSCH. If the PDCCH is missed, The user will also feed back NACK at the corresponding position in the codebook.
  • DAI downlink assignment index
  • the user does not perform targeted feedback on whether it is received or whether it is received correctly, but only provides feedback in the HARQ-ACK codebook for the PDSCH.
  • the UE will feed back a NACK at the HARQ-ACK feedback position corresponding to the PDSCH.
  • the base station when it receives the NACK fed back by the UE, there is no way to determine whether the UE has failed to receive the PDSCH or the PDCCH (that is, it has not received the PDSCH at all). After receiving the NACK fed back by the UE, the base station usually initiates a retransmission for the PDSCH, so that the UE can correctly receive the TB on the PDSCH by combining multiple retransmissions.
  • this application provides an information feedback method, so that after receiving the DCI of the retransmission schedule, the UE adds another feedback in addition to the conventional HARQ-ACK message, which is used to indicate whether it has received the initial transmission schedule. DCI.
  • FIG. 4 is a schematic diagram of a communication method 400 proposed by an embodiment of the present application. As shown in Figure 4, method 400 may include the following steps:
  • the network device sends first indication information to the terminal device.
  • the terminal device receives the first indication information sent by the network device.
  • the network device may send the first indication information to the terminal device, where the first indication information is used to indicate the TB that is scheduled for retransmission. Further, the first indication information may be carried in DCI.
  • the terminal device judges whether the second indication information has been received.
  • the terminal device may determine whether the second indication information has been received, where the second indication information is used to indicate the scheduled TB for initial transmission. Wherein, if the network device has sent the second indication information, the time for sending the second indication information will be earlier than the time for sending the first indication information. Further, the second indication information may be carried in the DCI.
  • the terminal device determines that the second message is not received.
  • the preset condition includes at least one of the following: the terminal device does not receive the indication information for scheduling the initial transmission of the TB between receiving the fourth indication information and the first indication information, the NDI value of the first indication information and the fourth indication The value of the NDI of the information is reversed, and the HARQ process number of the first indication information is the same as the HARQ process number of the fourth indication information, where the fourth indication information is used to schedule the initial transmission or retransmission of the previous TB of the TB, And the receiving time of the fourth indication information is earlier than the receiving time of the first indication information.
  • the terminal device can judge whether the TB scheduled by the first indication information is an initial transmission TB or a retransmission according to the MCS index value carried in the first indication information. TB.
  • the first transmission TB is scheduled by the first indication information; when the MCS carried by the first indication information is from X to 31, the first indication information TB scheduled for retransmission.
  • the modulation method corresponding to the MCS table carried by the first instruction information does not include 64QAM (that is, the modulation methods only have QPSK, 16QAM and 64QAM), X is equal to 29; when the modulation method corresponding to the MCS table carried by the first instruction information includes In the case of 64QAM (that is, the modulation modes include QPSK, 16QAM, 64QAM and 256QAM), X is equal to 28.
  • the terminal device judges that the first indication information is the indication information indicating the TB for scheduled retransmission, it can judge whether the network device The second indication message has been sent.
  • the network device has sent the second indication information before receiving the first indication information, that is, to indicate scheduling The initial TB indication information, but the terminal device has not received the second indication information; if the NDI value in the first indication information and the NDI value in the fourth indication information do not reverse, it indicates that the terminal device does not exist The situation of failing to receive the second indication information.
  • the terminal device sends third indication information to the network device.
  • the network device receives the third indication information sent by the terminal device.
  • the terminal device when the terminal device determines that the second indication information has not been received according to the first indication information and the fourth indication information, it may send third indication information to the network device, where the third indication information is used to instruct the terminal The device does not receive the second indication information.
  • the third indication information may not be fed back together with the HARQ-ACK information corresponding to the PDSCH, that is, the third indication information and the HARQ-ACK information correspond to different PUCCHs.
  • the terminal device can perform feedback according to 1 bit carried in the third indication information.
  • bit it means that the terminal device has not received the second indication information; when the bit is 1, it means that the terminal device The second indication information has been received.
  • the terminal device may perform feedback according to the preconfigured sequence in the third indication information.
  • the third indication information includes the preconfigured first sequence, it means that the terminal device has received the second indication information; when the third indication information If the information includes the preconfigured second sequence, it means that the terminal device has not received the second indication information.
  • the terminal device can give feedback according to whether to send the third indication information.
  • the third indication information is sent, it means that the terminal device has received the second indication information; when the third indication information is not sent, it means that the terminal device has not received the third indication information.
  • Second instruction message When the third indication information is sent, it means that the terminal device has received the second indication information; when the third indication information is not sent, it means that the terminal device has not received the third indication information. Second instruction message.
  • the time interval between the end time when the terminal device receives the first indication information and the start time when the terminal device sends the third indication information is greater than or equal to the first time period, and the first time period may be less than or equal to the second time period, wherein, The first period is the shortest time required by the terminal device for the receiving and decoding process of the PDCCH, and the second period is between the end time when the terminal device receives the PDSCH and the start time when the HARQ-ACK information corresponding to the TB carried on the PDSCH is sent the shortest time. Because, after receiving and parsing the first indication information, the terminal device can determine whether it has missed detection of the DCI carrying the second indication information.
  • the first period of time may be equal to the second period of time.
  • the above-mentioned first period may be predefined by the protocol, different values may be selected under different subcarrier intervals, and the value may be less than or equal to the second period.
  • the terminal device sends the third indication information to the network device in the first time unit, where the first time unit may be in any of the following forms:
  • a time unit for sending the HARQ-ACK information corresponding to the retransmission TB scheduled by the first indication information when the third indication information is in the same time unit as the HARQ-ACK information corresponding to the retransmission TB scheduled by sending the first indication information, there is no need to add new time unit offset indication information, and the sending of the first indication information
  • the time unit of the HARQ-ACK information corresponding to the scheduled retransmission TB is the first time unit.
  • the offset is the offset between the time unit where the HARQ-ACK information corresponding to the retransmission TB scheduled by the first indication information is sent to the time unit where the third indication information is located;
  • the time unit offset indication information is included in the first indication information, and the time unit offset indication information indicates the offset of the time unit.
  • the first time unit is the time unit corresponding to the time unit index in which the terminal device receives the first indication information and the time unit index in which the offset of the time unit is superimposed.
  • time unit offset indication information may also be carried in high-layer signaling.
  • the first time unit may be the first uplink time unit after the end moment when the terminal device receives the first indication information is superimposed with the first time period.
  • the time unit may be a time slot, a sub-slot, or a set of N orthogonal frequency division multiplexing (Orthogonal frequency division multiplexing, OFDM) symbols.
  • OFDM Orthogonal frequency division multiplexing
  • a time slot can contain 14 OFDM symbols, and a sub-slot can contain 2 or 7 OFDM symbols; in the extended CP (extended CP)
  • a slot can contain 12 OFDM symbols, and a sub-slot can contain 2 or 6 OFDM symbols.
  • N is predefined by the protocol or configured by the network device.
  • the OFDM symbols in a time slot or sub-slot can be all used for uplink transmission; all can be used for downlink transmission; a part can also be used for downlink transmission, a part can be used for uplink transmission, and a part can be reserved for no transmission, or by
  • the network device dynamically issues downlink control information to determine whether it is uplink transmission or downlink transmission.
  • the above examples are for illustration only, and shall not constitute any limitation to the present application.
  • the format of the time unit is not limited to the above examples.
  • the network device may notify a dedicated PUCCH resource as the PUCCH resource of the third indication information through the fifth indication information.
  • the fifth indication information may be carried in high-level signaling; in addition, the network device may also configure a PUCCH resource set through high-level signaling, and determine the PUCCH resource through the PUCCH resource index information included in the first indication information One PUCCH resource in the set is used as the PUCCH resource of the third indication information.
  • the PUCCH resource index information may share the same indication field with the HARQ-ACK information corresponding to the retransmission TB scheduled by the first indication information, or may be a new indication field.
  • the third indication information may be fed back together with the HARQ-ACK information corresponding to the retransmission TB scheduled by the first indication information, that is, the third indication information corresponds to the same PUCCH as the above HARQ-ACK information, and the specific PUCCH resource
  • the indication manner may be the indication manner of the HARQ-ACK codebook corresponding to the retransmission TB scheduled by the first indication information. That is, the indication information field of the third indication information and the HARQ-ACK codebook corresponding to the retransmission TB scheduled by the first indication information are concatenated together and fed back.
  • the start bit of the third indication information may be after the end bit of the HARQ-ACK information corresponding to the retransmission TB scheduled by the first indication information.
  • the HARQ-ACK has a total of M bits
  • the third indication information has a total of N bits
  • the concatenated bit sequence is M+N bits
  • the M+N bits are channel coded together and carried in a Send on the PUCCH resource.
  • both M and N are positive integers.
  • the terminal device determines that the DCI carrying the second indication information has been missed, it does not need to process the PDSCH resources corresponding to the first indication information, and can directly feed back the HARQ-NACK information;
  • the terminal device determines that the DCI carrying the second indication information has been missed, it does not need to process the PDSCH resources corresponding to the first indication information, and can directly feed back the HARQ-NACK information;
  • the terminal device determines that the DCI carrying the second indication information has been missed, it does not need to process the PDSCH resources corresponding to the first indication information, and can directly feed back the HARQ-NACK information;
  • the terminal device determines that the DCI carrying the second indication information has been missed, it does not need to process the PDSCH resources corresponding to the first indication information, and can directly feed back the HARQ-NACK information;
  • the terminal device determines that the DCI carrying the second indication information has been missed, it does not need to process the PDSCH resources corresponding to the first indication information, and can directly feed back
  • the terminal device when the terminal device determines that the second indication information has been received according to the first indication information and the fourth indication information, the terminal device may send third indication information to the network device, and the third indication information The indication information is used to indicate that the terminal device has received the second indication information.
  • the terminal device may send third indication information for the second indication information to the network device, where the third indication information may be HARQ-ACK information corresponding to the second indication information.
  • the third indication information may be HARQ-ACK information corresponding to the second indication information.
  • the terminal device may also send the third indication information to the network device in the form of RRC signaling.
  • the network device sends sixth indication information to the terminal device.
  • the terminal device receives the sixth indication information sent by the network device.
  • the network device may send sixth indication information to the terminal device, where the sixth indication information is used to schedule the initial transmission of the TB.
  • the network device if it has sent the PDSCH resource corresponding to the retransmitted TB, it can re-schedule the initial transmission to the terminal device when the HARQ-ACK information corresponding to the PDSCH is not received. way to send TB.
  • the network device does not send the resource of the PDSCH corresponding to the retransmitted TB, the resource may not be sent, and the TB may be sent in an initial transmission scheduling manner instead.
  • the network device may continue to send the resources of the PDSCH corresponding to the retransmission TB and receive the HARQ-ACK information corresponding to the PDSCH.
  • the network device can send the TB to the terminal device in the manner of initial transmission scheduling, so that the terminal device can obtain the information of the corresponding TBS of the TB, which improves the chance of successful decoding. probability.
  • the terminal device may send the third indication information to the network device, so as to inform the network device whether to receive the second indication information. If the third indication information indicates that the terminal device has not received the second indication information, the network device may adjust the scheduling of the TB to prevent the network device from sending and scheduling the TB retransmission multiple times after the terminal device has not received the second indication information error conditions, thereby improving network performance. In addition, the network device sends the TB to the terminal device in the manner of initial transmission scheduling, so that the terminal device can correctly receive the TB in the manner of retransmission scheduling, and improve the success rate of self-decoding.
  • the methods and operations implemented by the terminal equipment may also be implemented by components (such as chips or circuits) that can be used for the terminal equipment, and the methods and operations implemented by the network equipment may also be implemented by A component (such as a chip or a circuit) implementation that can be used in a network device.
  • components such as chips or circuits
  • a component such as a chip or a circuit
  • each network element such as a transmitting end device or a receiving end device, includes a corresponding hardware structure and/or software module for performing each function in order to realize the above functions.
  • the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software drives hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.
  • the embodiment of the present application can divide the functional modules of the transmitting end device or the receiving end device according to the above method example, for example, each functional module can be divided corresponding to each function, or two or more functions can be integrated into one processing module middle.
  • the above-mentioned integrated modules can be implemented in the form of hardware or in the form of software function modules. It should be noted that the division of modules in the embodiment of the present application is schematic, and is only a logical function division, and there may be other division methods in actual implementation. In the following, description will be made by taking the division of each functional module corresponding to each function as an example.
  • Fig. 5 is a schematic block diagram of a communication device 500 provided by an embodiment of the present application.
  • the communication device 500 includes a transceiver unit 510 and a processing unit 520 .
  • the transceiver unit 510 can implement a corresponding communication function, and the processing unit 510 is used for data processing.
  • the transceiver unit 510 may also be called a communication interface or a communication unit.
  • the communication device 500 may further include a storage unit, which may be used to store instructions and/or data, and the processing unit 520 may read the instructions and/or data in the storage unit, so that the communication device implements the aforementioned method Example.
  • a storage unit which may be used to store instructions and/or data
  • the processing unit 520 may read the instructions and/or data in the storage unit, so that the communication device implements the aforementioned method Example.
  • the communication device 500 can be used to perform the actions performed by the terminal device in the above method embodiments.
  • the communication device 500 can be a terminal device or a component that can be configured in the terminal device, and the transceiver unit 510 is used to perform the above method
  • the processing unit 520 is configured to perform operations related to processing on the terminal device side in the above method embodiments.
  • the transceiver unit 510 is used for: S401, S403, S404; the processing unit 520 is used for: S402.
  • transceiver unit 510 and processing unit 520, reference may be made directly to the relevant description of the method 400 in FIG. 4 , and details are not repeated here.
  • the communication device 500 can be used to execute the actions performed by the network device in the above method embodiments.
  • the communication device 500 can be a network device or a component that can be configured in the network device.
  • the transceiver unit 510 The processing unit 520 is configured to perform operations related to processing on the network device side in the above method embodiments.
  • the transceiver unit 510 is used in S401, S403, and S404.
  • transceiver unit 510 and processing unit 520, reference may be made directly to the relevant description of the method 400 in FIG. 4 , and details are not repeated here.
  • the processing unit 520 in the above embodiments may be implemented by at least one processor or processor-related circuits.
  • the transceiver unit 510 may be implemented by a transceiver or transceiver-related circuits.
  • the transceiver unit 510 may also be referred to as a communication unit or a communication interface.
  • the storage unit can be realized by at least one memory.
  • the embodiment of the present application further provides a communication device 600 .
  • the communication device 600 includes a processor 66, the processor 66 is coupled to a memory 620, the memory 620 is used to store computer programs or instructions and/or data, and the processor 66 is used to execute the computer programs or instructions and/or data stored in the memory 620, The methods in the above method embodiments are executed.
  • the communication device 600 includes one or more processors 66 .
  • the communication device 600 may further include a memory 620 .
  • the communication device 600 may include one or more memories 620 .
  • the memory 620 can be integrated with the processor 66, or set separately.
  • the communication device 600 may further include a transceiver 630, and the transceiver 630 is used for receiving and/or sending signals.
  • the processor 66 is configured to control the transceiver 630 to receive and/or send signals.
  • the communication apparatus 600 is used to implement the operations performed by the terminal device in the above method embodiments.
  • the processor 66 is configured to implement processing-related operations performed by the terminal device in the above method embodiments
  • the transceiver 630 is configured to implement transceiving-related operations performed by the terminal device in the above method embodiments.
  • the communications apparatus 600 is configured to implement the operations performed by the network device in the above method embodiments.
  • the processor 66 is configured to implement the processing-related operations performed by the network device in the above method embodiments
  • the transceiver 630 is configured to implement the transceiving-related operations performed by the network device in the above method embodiments.
  • the embodiment of the present application also provides a communication device 700, and the communication device 700 may be a terminal device or a chip.
  • the communication apparatus 700 may be used to perform the operations performed by the terminal device in the foregoing method embodiments.
  • FIG. 7 shows a schematic structural diagram of a simplified terminal device provided in this embodiment of the present application.
  • the terminal device includes a processor, a memory, a radio frequency circuit, an antenna, and an input and output device.
  • the processor is mainly used to process communication protocols and communication data, control terminal equipment, execute software programs, process data of software programs, and the like.
  • Memory is primarily used to store software programs and data.
  • the radio frequency circuit is mainly used for the conversion of the baseband signal and the radio frequency signal and the processing of the radio frequency signal.
  • Antennas are mainly used to send and receive radio frequency signals in the form of electromagnetic waves.
  • Input and output devices such as touch screens, display screens, and keyboards, are mainly used to receive data input by users and output data to users. It should be noted that some types of terminal equipment may not have input and output devices.
  • the processor When data needs to be sent, the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the radio frequency circuit.
  • the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data.
  • a memory may also be called a storage medium or a storage device. The memory may be set independently of the processor, or may be integrated with the processor, which is not limited in this embodiment of the present application.
  • the antenna and the radio frequency circuit with the transceiver function may be regarded as the transceiver unit of the terminal device, and the processor with the processing function may be regarded as the processing unit of the terminal device.
  • the terminal device includes a transceiver unit 710 and a processing unit 720 .
  • the transceiver unit 710 may also be called a transceiver, a transceiver, a transceiver device, and the like.
  • the processing unit 720 may also be called a processor, a processing board, a processing module, a processing device, and the like.
  • the device for realizing the receiving function in the transceiver unit 710 can be regarded as a receiving unit, and the device for realizing the sending function in the transceiver unit 710 can be regarded as a sending unit, that is, the transceiver unit 710 includes a receiving unit and a sending unit.
  • the transceiver unit may sometimes also be referred to as a transceiver, a transceiver, or a transceiver circuit.
  • the receiving unit may sometimes be called a receiver, a receiver, or a receiving circuit, etc.
  • the sending unit may sometimes be called a transmitter, a transmitter, or a transmitting circuit, etc.
  • the processing unit 720 is configured to perform processing actions on the terminal device side in FIG. 4 ;
  • the transceiving unit 710 is configured to perform transceiving actions on the terminal device side in FIG. 4 .
  • FIG. 7 is only an example rather than a limitation, and the foregoing terminal device including a transceiver unit and a processing unit may not depend on the structure shown in FIG. 7 .
  • the chip When the communication device 700 is a chip, the chip includes a transceiver unit and a processing unit.
  • the transceiver unit may be an input-output circuit or a communication interface;
  • the processing unit may be a processor or a microprocessor or an integrated circuit integrated on the chip.
  • the embodiment of the present application also provides a communication device 800, and the communication device 800 may be a network device or a chip.
  • the communication apparatus 800 may be configured to perform the operations performed by the network device in the foregoing method embodiments.
  • FIG. 8 shows a schematic structural diagram of a simplified base station provided by an embodiment of the present application.
  • the base station includes part 810 and part 820 .
  • Part 810 is mainly used for transmitting and receiving radio frequency signals and conversion between radio frequency signals and baseband signals; part 820 is mainly used for baseband processing and controlling base stations.
  • the part 810 may generally be called a transceiver unit, a transceiver, a transceiver circuit, or a transceiver.
  • the part 820 is generally the control center of the base station, which can generally be referred to as a processing unit, and is used to control the base station to perform processing operations on the network device side in the foregoing method embodiments.
  • the transceiver unit of part 810 may also be referred to as a transceiver or a transceiver, etc., and includes an antenna and a radio frequency circuit, wherein the radio frequency circuit is mainly used for radio frequency processing.
  • the device used to implement the receiving function in part 810 can be regarded as a receiving unit, and the device used to realize the sending function can be regarded as a sending unit, that is, part 810 includes a receiving unit and a sending unit.
  • the receiving unit may also be called a receiver, receiver, or receiving circuit, etc.
  • the sending unit may be called a transmitter, transmitter, or transmitting circuit, etc.
  • Section 820 may include one or more single boards, each of which may include one or more processors and one or more memories.
  • the processor is used to read and execute programs in the memory to realize baseband processing functions and control the base station. If there are multiple single boards, each single board can be interconnected to enhance the processing capability. As an optional implementation, it is also possible that multiple single boards share one or more processors, or that multiple single boards share one or more memories, or that multiple single boards share one or more processors at the same time. device.
  • the transceiving unit in part 810 is configured to perform steps related to transceiving performed by the network device in the embodiment shown in FIG. 4 .
  • FIG. 8 is only an example rather than a limitation, and the foregoing network device including a transceiver unit and a processing unit may not depend on the structure shown in FIG. 8 .
  • the chip When the communication device 800 is a chip, the chip includes a transceiver unit and a processing unit.
  • the transceiver unit may be an input-output circuit or a communication interface;
  • the processing unit is a processor or a microprocessor or an integrated circuit integrated on the chip.
  • the embodiment of the present application also provides a computer-readable storage medium, on which computer instructions for implementing the method executed by the terminal device or the method executed by the network device in the above method embodiments are stored.
  • the computer when the computer program is executed by a computer, the computer can implement the method executed by the terminal device or the method executed by the network device in the above method embodiments.
  • the embodiments of the present application also provide a computer program product including instructions, which, when executed by a computer, enable the computer to implement the method executed by the terminal device or the method executed by the network device in the above method embodiments.
  • An embodiment of the present application further provides a communication system, where the communication system includes the network device and the terminal device in the foregoing embodiments.
  • a terminal device or a network device may include a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer.
  • the hardware layer may include hardware such as a central processing unit (central processing unit, CPU), a memory management unit (memory management unit, MMU), and memory (also called main memory).
  • the operating system of the operating system layer can be any one or more computer operating systems that realize business processing through processes, for example, Linux operating system, Unix operating system, Android operating system, iOS operating system, or windows operating system.
  • the application layer may include applications such as browsers, address books, word processing software, and instant messaging software.
  • the embodiment of the present application does not specifically limit the specific structure of the execution subject of the method provided in the embodiment of the present application, as long as the program that records the code of the method provided in the embodiment of the present application can be executed according to the method provided in the embodiment of the present application Just communicate.
  • the subject of execution of the method provided by the embodiment of the present application may be a terminal device or a network device, or a functional module in the terminal device or network device that can call a program and execute the program.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer, or a data storage device such as a server or a data center integrated with one or more available media.
  • Usable media may include, but are not limited to, magnetic media or magnetic storage devices (for example, floppy disks, hard disks (such as removable hard disks), tapes), optical media (for example, optical disks, compact discs, etc.) , CD), digital versatile disc (digital versatile disc, DVD, etc.), smart cards and flash memory devices (such as erasable programmable read-only memory (EPROM), card, stick or key drive, etc. ), or semiconductor media (such as solid state disk (SSD), U disk, read-only memory (ROM), random access memory (RAM), etc. can store programs The medium of the code.
  • SSD solid state disk
  • U disk read-only memory
  • RAM random access memory
  • Various storage media described herein can represent one or more devices and/or other machine-readable media for storing information.
  • the term "machine-readable medium” may include, but is not limited to, wireless channels and various other media capable of storing, containing and/or carrying instructions and/or data.
  • processors mentioned in the embodiment of the present application may be a central processing unit (central processing unit, CPU), and may also be other general processors, digital signal processors (digital signal processor, DSP), application specific integrated circuits ( application specific integrated circuit (ASIC), off-the-shelf programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.
  • a general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like.
  • the memory mentioned in the embodiments of the present application may be a volatile memory or a nonvolatile memory, or may include both volatile and nonvolatile memories.
  • the non-volatile memory can be read-only memory (read-only memory, ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), electrically programmable Erases programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be random access memory (RAM).
  • RAM can be used as an external cache.
  • RAM may include the following forms: static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM) , double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (synchlink DRAM, SLDRAM) and Direct memory bus random access memory (direct rambus RAM, DR RAM).
  • static random access memory static random access memory
  • dynamic RAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • SDRAM synchronous DRAM
  • double data rate SDRAM double data rate SDRAM
  • DDR SDRAM double data rate SDRAM
  • ESDRAM enhanced synchronous dynamic random access memory
  • SLDRAM synchronous connection dynamic random access memory
  • Direct memory bus random access memory direct rambus RAM, DR RAM
  • the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components
  • the memory storage module may be integrated in the processor.
  • memories described herein are intended to include, but are not limited to, these and any other suitable types of memories.
  • the disclosed devices and methods may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the above units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components can be combined or can be Integrate into another system, or some features may be ignored, or not implemented.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.
  • the units described above as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to implement the solutions provided in this application.
  • each functional unit in each embodiment of the present application may be integrated into one unit, each unit may exist separately physically, or two or more units may be integrated into one unit.
  • a computer can be a general purpose computer, special purpose computer, computer network, or other programmable device.
  • the computer can be a personal computer, a server, or a network device, etc.
  • Computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, e.g. Coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) to another website site, computer, server or data center.
  • DSL digital subscriber line
  • wireless such as infrared, wireless, microwave, etc.

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Abstract

本申请提供了一种信息反馈的方法以及装置，该信息反馈的方法包括：终端设备接收网络设备发送的第一指示信息，第一指示信息用于调度传输块TB的重传；终端设备判断是否已接收第二指示信息，其中，第二指示信息用于调度TB的初传；终端设备向网络设备发送第三指示信息，第三指示信息用于指示终端设备是否已接收第二指示信息。从而，终端设备可以向网络设备发送第三指示信息，以告知网络设备是否接收第二指示信息。若第三指示信息指示终端设备未接收第二指示信息，网络设备可以对该TB的调度作出调整，避免终端设备在未收到第二指示信息之后，网络设备仍然多次发送调度该TB重传的错误情况，从而改善网络性能。

Description

一种信息反馈的方法以及装置
本申请要求于2021年05月14日提交中国专利局、申请号为202110528193.8、申请名称为“一种信息反馈的方法以及装置”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
本申请涉及通信领域，并且，更具体地，涉及一种信息反馈的方法以及装置。
背景技术
当前，网络设备通过物理下行控制信道(Physical downlink control channel,PDCCH)以承载上/下行数据的调度信息，并通过调度信息对应的物理下行数据信道(Physical downlink shared channel,PDSCH)/物理上行数据信道(Physical uplink shared channel,PUSCH)承载下行/上行数据与终端设备进行数据传输。终端设备在接收到该PDCCH之后，可以解析上/下行数据的调度信息，并根据该调度信息在对应的PDSCH/PUSCH上进行数据传输。
然而，在传输块(Transport block,TB)的重复传输过程中，由于一些因素，如无线环境存在噪声或干扰的现象，用户设备(User equipment,UE)可能存在接收PDCCH错误的现象，如无法正确接收用于调度TB初传的下行控制信息(Downlink control information,DCI)，进而会出现终端设备在未收到初传DCI之后，网络设备仍然多次重传PDSCH的错误情况。所以，需要一种信息反馈的方法以及装置，从而能够缓解上述问题。
发明内容
本申请提供一种信息反馈的方法以及装置，可以使得终端设备在收到调度传输块(Transport block,TB)重传的下行控制信息(Downlink control information,DCI)之后，判断并反馈是否收到了调度TB初传的DCI，以此，网络设备可以准确获取终端设备对于调度TB初传的DCI的接收情况，并随之对该TB的调度作出调整，避免终端设备在未收到初传DCI之后，网络设备仍然多次重传PDSCH的错误情况，从而改善网络性能。
第一方面，提供了一种信息反馈的方法，包括：终端设备接收网络设备发送的第一指示信息，该第一指示信息用于调度传输块TB的重传；该终端设备判断是否已接收第二指示信息，其中，该第二指示信息用于调度该TB的初传；该终端设备向该网络设备发送第三指示信息，该第三指示信息用于指示该终端设备是否已接收该第二指示信息。
基于上述方案，终端设备可以向网络设备发送第三指示信息，以告知网络设备是否接收第二指示信息。若第三指示信息指示终端设备未接收第二指示信息，网络设备可以对该TB的调度作出调整，避免终端设备在未收到第二指示信息之后，网络设备仍然多次发送调度该TB重传的错误情况，从而改善网络性能。
应理解，终端设备如果未收到第二指示信息，就无法获取TB的传输码块大小(Transport block size,TBS)信息，无法正确译码，即使收到多次重传的TB也无法译码成功。所以，在网络设备接收指示终端设备未接收第二指示信息的第三指示信息之后，可以发送调度初传的TB的调度信息，并以初传的形式发送TB。从而，终端设备可以获得该TB的TBS信息，提高译码的正确率；同时，终端设备可以正确接收重传调度的方式的TB，提高自解码的成功率。
结合第一方面，在第一方面的某些实现方式中，该终端设备判断是否已接收第二指示信息，包括：在满足预设条件的情况下，该终端设备判断未接收该第二指示信息，其中，该预设条件包括以下至少一项：该终端设备接收第四指示信息与该第一指示信息之间未接收用于调度该TB的初传的指示信息、该第一指示信息的NDI的值与该第四指示信息的NDI的值发生翻转，以及该第一指示信息的混合自动重传请求(Hybrid auto repeat request,HARQ)进程号与该第四指示信息的HARQ进程号相同，其中，该第四指示信息用于调度该TB的前一个TB的初传或重传，该第四指示信息的接收时间先于该第一指示信息的接收时间。
结合第一方面，在第一方面的某些实现方式中，该终端设备接收该第一指示信息的末尾时刻与该终端设备发送该第三指示信息的起始时刻之间的时间间隔大于或者等于第一时段，该第一时段小于或者等于第二时段，该第二时段为该终端设备接收下行共享物理信道PDSCH的末尾时刻与发送该PDSCH上承载的TB对应的混合自动重传请求应答HARQ-ACK信息的起始时刻之间的最短时间。
结合第一方面，在第一方面的某些实现方式中，该终端设备向该网络设备发送第三指示信息，包括：该终端设备在第一时间单元向该网络设备发送该第三指示信息，其中，该第一时间单元为发送第一指示信息调度的重传TB对应的HARQ-ACK信息的时间单元，或，该第一时间单元为根据时间单元偏移指示信息与该终端设备接收该第一指示信息的时间单元索引确定的，所述时间单元偏移指示信息指示时间单元的偏移量，或，该第一时间单元为根据该终端设备接收该第一指示信息的时间单元与该第一时段确定的。
结合第一方面，在第一方面的某些实现方式中，在该第一时间单元为根据该第一指示信息与该终端设备接收该第一指示信息的时间单元索引确定的情况下，其中，该时间单元偏移指示信息包含于该第一指示信息。
结合第一方面，在第一方面的某些实现方式中，该第一时间单元为该终端设备接收该第一指示信息的时间单元索引与该时间单元偏移量叠加的时间单元索引对应的时间单元。
结合第一方面，在第一方面的某些实现方式中，在该第一时间单元为根据该终端设备接收该第一指示信息的时间单元与该第一时段确定的情况下，该第一时间单元为该终端设备接收该第一指示信息的末尾时刻与该第一时段叠加之后的第一个上行时间单元。
结合第一方面，在第一方面的某些实现方式中，该第三指示信息与第一指示信息调度的重传TB对应的HARQ-ACK信息对应相同的PUCCH。
第二方面，提供了一种信息反馈的方法，包括：网络设备向终端设备发送第一指示信息，该第一指示信息用于调度TB的重传；该网络设备接收该终端设备发送的第三指示信息，该第三指示信息用于指示该终端设备是否已接收第二指示信息，其中，该第二指示信息用于调度该TB的初传，该第二指示信息的发送时间先于该第一指示信息的发送时间。
结合第二方面，在第二方面的某些实现方式中，该网络设备向该终端设备发送第四指示信息，该第四指示信息用于调度该TB的前一个TB的初传或重传。
结合第二方面，在第二方面的某些实现方式中，该网络设备接收该终端设备发送的第三指示信息，包括：该网络设备在第一时间单元接收该终端设备发送的该第三指示信息，其中，该第一时间单元为发送第一指示信息调度的重传TB对应的HARQ-ACK信息的时间单元，或，该第一时间单元为根据时间单元偏移指示信息与该终端设备接收该第一指示信息的时间单元索引确定的，所述时间单元偏移指示信息指示时间单元的偏移量，或，该第一时间单元为根据该终端设备接收该第一指示信息的时间单元与该第一时段确定的。
结合第二方面，在第二方面的某些实现方式中，在该第一时间单元为根据该第一指示信息与该终端设备接收该第一指示信息的时间单元索引确定的情况下，该时间单元偏移指示信息包含于该第一指示信息。
结合第二方面，在第二方面的某些实现方式中，该第一时间单元为该终端设备接收该第一指示信息的时间单元索引与该时间单元偏移量叠加的时间单元索引对应的时间单元。
结合第二方面，在第二方面的某些实现方式中，在该第一时间单元为根据该终端设备接收该第一指示信息的时间单元与该第一时段确定的情况下，该第一时间单元为该终端设备接收该第一指示信息的末尾时刻与该第一时段叠加之后的第一个上行时间单元。
结合第二方面，在第二方面的某些实现方式中，该第三指示信息与所述第一指示信息调度的重传TB对应的HARQ-ACK信息对应相同的PUCCH。
第三方面，提供了一种通信装置，包括用于实现前述第一方面的任意可能的实现方式中的方法的功能模块。
第四方面，提供了一种通信装置，包括用于实现前述第二方面的任意可能的实现方式中的方法的功能模块。
第五方面，提供了一种通信装置，包括处理器和接口电路，接口电路用于接收来自该通信装置之外的其它通信装置的信号并传输至该处理器或将来自该处理器的信号发送给该通信装置之外的其它通信装置，该处理器通过逻辑电路或执行代码指令用于实现前述第一方面的任意可能的实现方式中的方法。
第六方面，提供了一种通信装置，包括处理器和接口电路，该接口电路用于接收来自该通信装置之外的其它通信装置的信号并传输至该处理器或将来自该处理器的信号发送给该通信装置之外的其它通信装置，该处理器通过逻辑电路或执行代码指令用于实现前述第二方面的任意可能的实现方式中的方法。
第七方面，提供了一种计算机可读存储介质，该计算机可读存储介质中存储有计算机程序或指令，当该计算机程序或指令被执行时，实现前述第一方面的任意可能的实现方式中的方法。
第八方面，提供了一种计算机可读存储介质，该计算机可读存储介质中存储有计算机程序或指令，当该计算机程序或指令被执行时，实现前述第二方面的任意可能的实现方式中的方法。
第九方面，提供了一种包含指令的计算机程序产品，当该指令被运行时，实现前述第一方面的任意可能的实现方式中的方法。
第十方面，提供了一种包含指令的计算机程序产品，当该指令被运行时，实现前述第 二方面的任意可能的实现方式中的方法。
第十一方面，提供了一种计算机程序，该计算机程序包括代码或指令，当该代码或指令被运行时，实现前述第一方面的任意可能的实现方式中的方法。
第十二方面，提供了一种计算机程序，该计算机程序包括代码或指令，当该代码或指令被运行时，实现前述第二方面的任意可能的实现方式中的方法。
第十三方面，提供一种芯片系统，该芯片系统包括处理器，还可以包括存储器，用于实现前述第一方面的任意可能的实现方式中的方法。该芯片系统可以由芯片构成，也可以包含芯片和其他分立器件。
第十四方面，提供一种芯片系统，该芯片系统包括处理器，还可以包括存储器，用于实现前述第二方面的任意可能的实现方式中的方法。该芯片系统可以由芯片构成，也可以包含芯片和其他分立器件。
第十五方面，提供一种通信系统，该通信系统包括第三方面或者第四方面所述的装置。
附图说明
图1是适用于本申请实施例的无线通信系统100的一示意图。
图2是适用于本申请实施例的无线通信系统200的一示意图。
图3是适用于本申请实施例的不同冗余版本编码后的比特的一示意图。
图4是本申请实施例提出的通信方法400的一示意图。
图5是本申请实施例提供的通信装置500的示意性框图。
图6是本申请实施例提供的一种通信装置600的结构示意图。
图7是适用于本申请实施例的一种简化的终端设备的结构示意图。
图8是适用于本申请实施例的一种简化的基站结构示意图。
具体实施方式
下面将结合附图，对本申请中的技术方案进行描述。
本申请实施例的技术方案可以应用于各种通信系统，例如：第五代(5th generation，5G)系统或新无线(new radio，NR)、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)、通用移动通信系统(universal mobile telecommunication system，UMTS)等。以及云端视频源编解码，渲染等，网络传输包括LTE、NR以及第六代系统(6th generation，6G)空口的核心网和接入网，终端头显虚拟现实(Virtual reality,VR)眼镜等设备。
为便于理解本申请实施例，首先结合图1详细说明适用于本申请实施例的通信系统。
图1是适用于本申请实施例的无线通信系统100的一示意图。如图1所示，该无线通信系统100可以包括至少一个网络设备，例如图1所示的网络设备111，该无线通信系统100还可以包括至少一个终端设备，例如图1所示的终端设备121至终端设备123。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。
图2是适用于本申请实施例的无线通信系统200的另一示意图。如图2所示，该无线通信系统100可以包括至少一个终端设备，例如图2所示的终端设备211，该无线通信系统100还可以包括至少一个网络设备，例如图2所示的网络设备221至网络设备223。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。
应理解，上述图1和图2仅是示例性说明，本申请并未限定于此。
还应理解，该无线通信系统中的网络设备可以是任意一种具有无线收发功能的设备。网络设备与终端设备之间的接口可以为Uu接口(或称为空口)。当然，在未来通信中，这些接口的名称可以不变，或者也可以用其它名称代替，本申请对此不限定。
网络设备是终端设备通过无线方式接入到移动通信系统中的接入设备,可以是基站、演进型基站(evolved NodeB，eNodeB)、发送接收点(Transmission reception point，TRP)、5G移动通信系统中的下一代基站(next generation NodeB，gNB)、未来移动通信系统中的基站或WiFi系统中的接入节点等。网络设备可以包括集中单元(Centralized unit，CU)、或分布单元(Distributed unit，DU)、或包括CU和DU。
在本申请实施例中，也可以通过多个网络功能实体来实现网络设备的功能，每个网络功能实体用于实现网络设备的部分功能。这些网络功能实体可以是硬件设备中的网络元件，也可以是在专用硬件上运行软件功能，或者是平台(例如，云平台)上实例化的虚拟化功能。
本申请实施例涉及的终端设备包括向用户提供语音和/或数据连通性的设备，例如可以包括具有无线连接功能的手持式设备、或连接到无线调制解调器的处理设备。该终端设备可以经无线接入网(radio access network，RAN)与核心网进行通信，与RAN交换语音和/或数据。该终端设备可以包括用户设备(user equipment，UE)、无线终端设备、移动终端设备、设备到设备通信(device-to-device，D2D)终端设备、车到一切(vehicle to everything，V2X)终端设备、机器到机器/机器类通信(machine-to-machine/machine-type communications，M2M/MTC)终端设备、物联网(internet of things，IoT)终端设备、订户单元、订户站，移动站、远程站、接入点(access point，AP)、远程终端、接入终端、用户终端、用户代理、或用户装备等。例如，可以包括移动电话(或称为“蜂窝”电话)，具有移动终端设备的计算机，便携式、袖珍式、手持式、计算机内置的移动装置等。例如，个人通信业务(personal communication service，PCS)电话、无绳电话、会话发起协议(session initiation protocol，SIP)话机、无线本地环路(wireless local loop，WLL)站、个人数字助理(personal digital assistant，PDA)、等设备。还包括受限设备，例如功耗较低的设备，或存储能力有限的设备，或计算能力有限的设备等。例如包括条码、射频识别(radio frequency identification，RFID)、传感器、全球定位系统(global positioning system，GPS)、激光扫描器等信息传感设备。
为便于理解本申请实施例，下面首先对本申请中涉及的几个术语做简单介绍。
1.新数据指示
UE从DCI中读取新数据指示(New data indicator,NDI)域，根据NDI域的信息确定该DCI调度的PDSCH承载的为初传的TB还是重传的TB。
如果PDSCH上承载了一个TB，则NDI域为1比特；如果PDSCH上承载了2个TB，则NDI域为2比特，即，每个比特对应一个TB。所以，对于一个TB，NDI只需要1比特，通过相对于前一次收到的DCI中的NDI的值是否翻转以表示是该TB为新传或重传。假设前一次收到的DCI的NDI的值为0，如果本次DCI为调度TB的重传，则NDI的值还是为0；如果本次DCI为调度TB的新传，则NDI的值为1。假设前一次收到的DCI的 NDI的值为1，如果本次DCI为调度TB的是重传，则NDI的值依然为1；如果本次DCI为调度TB的新传，则NDI的值为0。
通常来说，初传TB时，NDI的值会发生翻转，调制与编码策略(Modulation and coding scheme,MCS)域的取值为0～X-1中的一个值，其中，包括调制方式和码率，由网络设备侧根据信道条件和待传输数据的性能指标来选择合适的MCS值，并用相应的调制方式和码率对待传输的TB块进行编码和调制。重传TB时，NDI的值保持不变，MCS域的取值可以取X～31中的一个值，即，重传相对于初传可以改变调制方式，由于TB还是同样的TB，因此传输码块大小(Transport block size,TBS)不会变化，码率可以从TBS、调制方式和重传时的时频域总资源获取，不需要额外的指示。
2、冗余版本
冗余版本(Redundancy version,RV)：冗余版本的设计用于实现增量冗余(Incremental redundancy，IR)混合自动重传请求(Hybrid automatic repeat request，HARQ)传输，即将编码器生成的信息比特和冗余比特级联后组成一个序列，每个RV定义一个序列中的传输开始点，首次传送和各次HARQ重传分别使用不同的RV，以实现冗余比特的逐步积累，完成增量冗余HARQ操作。在LTE研究过程中，曾考虑过两种RV数量：4个和8个，经过讨论后确定采用4个RV。RV的定义与软缓存(Softbuffer)的大小有关，选择发送端循环缓存和接收端软缓存二者中较小者，将4个RV均匀分布在这个范围内。信道编码之后的比特会进行速率匹配，也就是进行重复或者打孔，以匹配空口资源的比特数。速率匹配可以使用不同的冗余版本，不同的冗余版本包含的信道编码后的比特可能不同。
图3为适用于本申请实施例的不同冗余版本编码后的比特的一示意图。如图3所示，其中，码率为R＝3/4，母码码率为1/3，Ncb为信道编码后的比特长度，从而，对应的信息比特长度为1/3Ncb，空口比特数为4/3Ncb，不同的冗余版本(RV0，RV1，RV2，RV3)对应的编码后的比特为图中阴影部分。
其中，母码编码前的信息比特称为系统比特，在1/3码率的母码编码中，编码后的比特序列中的前1/3比特即为系统比特。通常情况下，在自解码的过程中，(自解码是指根据本次RV版本的比特，不需要联合其他RV版本的比特，就可能可以成功译码)，该RV版本的比特需要包含所有的系统比特，对于不包含所有系统比特的RV版本，即使信道条件很好，UE收到后也很难译码成功。
因此，在TB初传的时候，通常会采用RV0的比特进行传输，尽可能保证初传正确；而在重传的时候，会选用其它RV版本的比特，以此可以发送与RV0不同的校验比特，使得接收端在将初传和重传的信息合并后，可以获得尽可能多的信息，增加重传效率。
3、PDSCH处理时间
在NR中，针对PDSCH的处理时间(即从PDSCH的接收到该PDSCH上承载的TB对应的HARQ-ACK的反馈所需的时间)定义了两种用户能力(UE处理能力1和UE处理能力2)。
具体来说，接收PDSCH的末尾时刻至承载对应HARQ-ACK的PUCCH的发送初始时刻之间的时段不应小于T proc,1，T proc,1＝(N 1+d 1,1+d 2)×(2048+144)·θ2 -μ·T c+T ext。也就是说，终端设备必须可以在T proc,1内完成PDSCH的接收并生成对应的HARQ-ACK，才能应对最严格的调度要求。其中，N 1为PDSCH的解码时间，如下表所示， 表1为在UE处理能力1的情况下N 1的值；表2为在UE处理能力2的情况下N 1的值。
表1
Figure PCTCN2022091396-appb-000001
表2
Figure PCTCN2022091396-appb-000002
其中，表1的第二列适用于预载解调参考信号(Demodulation reference signal,DMRS)且未配置附加DMRS的场景，第三列适用于预载DMRS且配置了附加DMRS的场景；表2对应的UE为处理能力较强的设备，此时不允许配置附加DMRS。
表格中的μ对应不同的子载波间隔，0表示15kHz，1表示30kHz，2表示60kHz，3表示120kHz。由于整个过程涉及到承载下行数据的PDSCH、调度该PDSCH的DCI所在的PDCCH、对应该PDSCH的HARQ-ACK所在的PUCCH或PUSCH，而这些信道所在的下行/上行载波的子载波间隔可能各不相同，在这种情况下，μ取值为使得T proc,1的值最大的子载波间隔。
d 1,1是考虑了PDCCH与PDSCH的重叠情况引入的处理时间的放松，因为UE需要先接收PDCCH并译码解析出PDCCH上承载的DCI才可以获取PDSCH的位置以及相关的物理层参数，再对PDSCH进行解调和译码，所以两者的重叠会影响PDSCH的处理速度。针对PDSCH映射关系B的情况，d 1,1的取值如下
当PDSCH的符号数大于或者等于7时，d 1,1＝0；
当PDSCH的符号数等大于或者等于3且小于或者等于6时，d 1,1等于PDSCH与调度该PDSCH的PDCCH重叠的符号数；
当PDSCH的符号数等于2时，如果调度该PDSCH的PDCCH是处于3符号长度的CORESET上，且该CORESET与该PDSCH的起始符号相同，则d 1,1＝3，否则，d 1,1等于PDSCH与调度该PDSCH的PDCCH重叠的符号数。
d 2是考虑了不同优先级上行信道重叠时引入的参数，与本申请无关。
在NR系统中，T c是一个时间单位，且T c＝1/Δf max·N f，其中，Δf max＝480*10 3HZ，；N f＝4096；θ＝T s/T C＝64，其中，T s＝1/(Δf ref·N f,ref)，Δf ref＝15·10 3HZ,N f,ref＝2048。
T ext在共享频谱信道接入的过程中为1，其余场景为0。
在实际传输的过程中，由于无线环境中存在噪声和干扰，UE对PDCCH和PDSCH可能存在接收错误的现象。
针对PDSCH，UE在接收到PDSCH之后，对承载在PDSCH上的TB进行解调译码并反馈相应的HARQ-ACK信息给网络侧。译码成功反馈ACK，译码失败反馈NACK。多个PDSCH的HARQ-ACK信息可以组合到一起反馈，即HARQ-ACK码本(Codebook，CB)。在NR系统中，R15版本共有两种码本，即Type-1HARQ-ACK码本和Type-2HARQ-ACK码本，又可以分别称为半静态码本和动态码本。
其中，在使用半静态码本的情况下，用户通过高层配置信息可以获取PDSCH可能出现的所有位置，针对所有可能出现的PDSCH，用户都可以进行反馈，准确接收时反馈ACK，接收错误或者未接收则反馈NACK。
在使用动态码本的情况下，用户可以通过PDCCH承载的下行控制信息中的下行分配索引(Downlink assignment index,DAI)以确定是否有漏检了用于调度PDSCH的PDCCH，如果漏检了PDCCH，用户也会在码本中的相应位置反馈NACK。
针对PDCCH，用户并不会针对性的进行是否收到或者是否接收正确的反馈，只会在针对PDSCH的HARQ-ACK码本中进行反馈。如上所述，如果UE没有未收到或者未正确接收PDCCH，在针对PDSCH的HARQ-ACK码本中，UE会在该PDSCH对应的HARQ-ACK反馈位置反馈NACK。
对于基站来说，当它收到UE反馈的NACK时，并没有办法判断UE到底是PDSCH接收失败还是PDCCH接收失败(即根本没接收PDSCH)。基站收到UE反馈的NACK后，通常会针对该PDSCH发起重传，使得UE可以通过多次重传合并正确接收该PDSCH上的TB。
介于此，本申请提供一种信息反馈的方法，使得UE在接收重传调度的DCI后，除了常规的HARQ-ACK消息之外，再增加一个反馈，用于指示自己是否收到了初传调度的DCI。
图4是本申请实施例提出的通信方法400的一示意图。如图4所示，方法400可以包括以下步骤：
S401，网络设备向终端设备发送第一指示信息。对应的，终端设备接收网络设备发送的第一指示信息。
示例地，网络设备可以向终端设备发送第一指示信息，该第一指示信息用于指示调度重传的TB。进一步地，该第一指示信息可以承载于DCI中。
S402，终端设备判断是否已接收第二指示信息。
示例地，终端设备可以判断是否已接收第二指示信息，该第二指示信息用于指示调度初传的TB。其中，若网络设备已发送第二指示信息，发送第二指示信息的时间会先于发送第一指示信息的时间。进一步地，第二指示信息可以承载于DCI中。
具体地，在满足预设条件的情况下，终端设备判断未接收第二消息。其中，预设条件包括以下至少一项：终端设备接收第四指示信息与第一指示信息之间未接收用于调度TB的初传的指示信息、第一指示信息的NDI的值与第四指示信息的NDI的值发生翻转，以及第一指示信息的HARQ进程号与第四指示信息的HARQ进程号相同，其中，第四指示信息用于调度该TB的前一个TB的初传或重传，且第四指示信息的接收时间先于第一指示信息的接收时间。
举例而言，在第一指示信息承载于DCI的情况下，首先，终端设备可以根据第一指示信息携带的MCS索引值，判断被第一指示信息调度的TB是初传的TB或是重传的TB。
例如，当第一指示信息携带的MCS为0至X-1时，则第一指示信息调度的为初传的TB；当第一指示信息携带的MCS为X至31时，则第一指示信息调度的为重传的TB。
其中，当第一指示信息携带的MCS表格对应的调制方式不包括64QAM时(即，调制方式只有QPSK、16QAM和64QAM)，X等于29；当第一指示信息携带的MCS表格对应的调制方式包括64QAM时(即，调制方式有QPSK、16QAM、64QAM和256QAM)，X等于28。
其次，在终端设备判断该第一指示信息为指示调度重传的TB的指示信息的情况下，可以根据第一指示信息的NDI的值与第四指示信息的NDI的值的关系判断是否网络设备已发送第二指示信息。
例如，若第一指示信息中的NDI的值与第四指示信息的NDI的值发生了翻转，则表明在接收第一指示信息之前，网络设备已经发送第二指示信息，即，用于指示调度初传的TB的指示信息，然而终端设备并未接收到第二指示信息；若第一指示信息中的NDI的值与第四指示信息的NDI的值未发生翻转，则表明终端设备并未存在接收第二指示信息失败的情况。
S403，终端设备向网络设备发送第三指示信息。对应的，网络设备接收终端设备发送的第三指示信息。
在可能实现的一种方式中，当终端设备根据第一指示信息与第四指示信息，确定未接收第二指示信息，可以向网络设备发送第三指示信息，该第三指示信息用于指示终端设备并未接收第二指示信息。
可选地，第三指示信息可以不与PDSCH对应的HARQ-ACK信息一起反馈，即，第三指示信息与HARQ-ACK信息对应不同的PUCCH。
举例而言，终端设备可以根据第三指示信息携带的1个比特进行反馈，当该比特为0时，则表示终端设备并未接收第二指示信息；当该比特为1时，则表示终端设备已接收第二指示信息。
举例而言，终端设备可以根据第三指示信息中的预配置的序列进行反馈，当第三指示信息中包括预配置的第一序列，则表示终端设备已接收第二指示信息；当第三指示信息中包括预配置的第二序列，则表示终端设备未接收第二指示信息。
举例而言，终端设备可以根据是否发送第三指示信息进行反馈，当发送第三指示信息 中，则表示终端设备已接收第二指示信息；当不发送第三指示信息，则表示终端设备未接收第二指示信息。
其中，终端设备接收第一指示信息的末尾时刻与终端设备发送第三指示信息的起始时刻之间的时间间隔大于或者等于第一时段，该第一时段可以小于或者等于第二时段，其中，第一时段为终端设备对于PDCCH的接收译码过程所需的最短时间，第二时段为终端设备接收PDSCH的末尾时刻与发送该PDSCH上承载的TB对应的HARQ-ACK信息的起始时刻之间的最短时间。因为，终端设备可以在接收并解析第一指示信息之后，确定其是否漏检了承载第二指示信息的DCI。通常而言，在同等情况下，终端设备对于PDCCH的接收译码过程较于PDSCH的接收译码过程更为简单，所以需要的处理时间也会更短。因此，第一时段可以等于第二时段。并且，上述第一时段可以为协议预定义的，在不同的子载波间隔下可以选取不同的值，取值可以小于或者等于第二时段。
此外，终端设备在第一时间单元向网络设备发送第三指示信息，其中，第一时间单元可以为以下任一种形式：
(1)发送第一指示信息调度的重传TB对应的HARQ-ACK信息的时间单元。进一步地，当第三指示信息与发送第一指示信息调度的重传TB对应的HARQ-ACK信息在同一个时间单元时，则不用增加新的时间单元偏移指示信息，该发送第一指示信息调度的重传TB对应的HARQ-ACK信息的时间单元为第一时间单元。其中，偏移为发送该第一指示信息调度的重传TB对应的HARQ-ACK信息所在的时间单元至第三指示信息所在的时间单元之间的偏移；
(2)根据时间单元偏移指示信息与终端设备接收第一指示信息的时间单元索引确定的。进一步地，时间单元偏移指示信息包含于第一指示信息，该时间单元偏移指示信息指示时间单元的偏移量。例如，第一时间单元为终端设备接收第一指示信息的时间单元索引与时间单元的偏移量叠加的时间单元索引对应的时间单元。
此外，该时间单元偏移指示信息也可以承载于高层信令之中。
(3)根据终端设备接收第一指示信息的时间单元与第一时段确定的。进一步地，第一时间单元可以为终端设备接收第一指示信息的末尾时刻与第一时段叠加之后的第一个上行时间单元。
应理解，在上述方案中，时间单元可以是时隙、子时隙，或者N个正交频分复用(Orthogonal frequency division multiplexing,OFDM)符号的集合。其中，在NR系统中，在常规CP(normal CP)的情况下，一个时隙可以包含14个OFDM符号，一个子时隙可以包含2个或7个OFDM符号；在扩展CP(extended CP)的情况下，一个时隙可以包含12个OFDM符号，一个子时隙可以包含2个或6个OFDM符号。如果时间单元是N个OFDM符号的集合，N由协议预定义或者网络设备配置的。
其中，一个时隙或子时隙中的OFDM符号可以全用于上行传输；可以全用于下行传输；也可以一部分用于下行传输，一部分用于上行传输，一部分预留不进行传输，或者由网络设备动态下发下行控制信息以确定是上行传输或下行传输。并且，以上举例仅为示例性说明，不应对本申请构成任何限定。出于系统前向兼容性考虑，时间单元的格式不限于以上示例。
还应理解，关于第三指示信息的PUCCH资源的确定，网络设备可以通过第五指示信 息通知一个专用的PUCCH资源，作为第三指示信息的PUCCH资源。进一步地，该第五指示信息可以承载于高层信令之中；此外，网络设备也可以通过高层信令配置一个PUCCH资源集合，通过包含于第一指示信息的PUCCH资源索引信息，以确定PUCCH资源集合中的一个PUCCH资源，作为第三指示信息的PUCCH资源。其中，PUCCH资源索引信息可以与第一指示信息调度的重传TB对应的HARQ-ACK信息共用同一个指示域，也可以为一个新的指示域。
可选地，该第三指示信息可以与第一指示信息调度的重传TB对应的HARQ-ACK信息一起反馈，即，第三指示信息与上述HARQ-ACK信息对应相同的PUCCH，具体的PUCCH资源的指示方式可以采用第一指示信息调度的重传TB对应的HARQ-ACK码本的指示方式。即，第三指示信息的指示信息域和第一指示信息调度的重传TB对应的HARQ-ACK码本级联至一起后进行反馈。
举例而言，第三指示信息的起始比特可以处于第一指示信息调度的重传TB对应的HARQ-ACK信息的末尾比特之后。例如，该HARQ-ACK共有M个比特，该第三指示信息共有N个比特，则级联后的比特序列就是M+N个比特，将这M+N个比特一起进行信道编码，承载到一个PUCCH资源上进行发送。其中，M与N均为正整数。
应理解，基于上述方案，当终端设备确定漏检了承载第二指示信息的DCI时，不需要处理第一指示信息对应的PDSCH的资源，可以直接反馈HARQ-NACK信息；如果终端设备确定未漏检承载第二指示信息的DCI时，则正常处理第一指示信息对应的PDSCH的资源。
在可能实现的另一种方式中，在终端设备根据第一指示信息与第四指示信息，确定已接收第二指示信息的情况下，终端设备可以向网络设备发送第三指示信息，该第三指示信息用于指示终端设备已接收第二指示信息。
具体地，终端设备可以向网络设备发送针对第二指示信息的第三指示信息，该第三指示信息可以为第二指示信息对应的HARQ-ACK信息。关于发送该第三指示信息的第一时间单元、PUCCH资源的确定，以及是否与第一指示信息调度的重传TB对应的HARQ-ACK信息一起反馈的描述，可以参考上述相关描述，为了简洁，本申请在此不做赘述。
此外，终端设备也可以通过RRC信令的形式，将第三指示信息发送至网络设备。
S404，网络设备向终端设备发送第六指示信息。对应地，终端设备接收网络设备发送的第六指示信息。
可选地，在网络设备接收指示终端设备未接收第二指示信息的第三指示信息之后，可以向终端设备发送第六指示信息，该第六指示信息用于调度TB的初传。
在可能实现的一种方式中，如果网络设备已经发送了重传的TB对应的PDSCH的资源，则可以在未收到该PDSCH对应的HARQ-ACK信息时就重新向终端设备以初传的调度方式发送TB。
在可能实现的另一种方式中，如果网络设备并未发送重传的TB对应的PDSCH的资源，则可以不发送该资源，改为初传的调度方式发送TB。
应理解，如果第三指示信息指示终端设备已接收第二指示信息，则网络设备可以继续发送重传TB对应的PDSCH的资源，并接收该PDSCH对应的HARQ-ACK信息。
此外，终端设备如果未收到第二指示信息，就无法获取TB的TBS信息，无法正确译 码，即使收到多次重传的TB也无法译码成功。所以，网络设备在得知终端设备未接收第二指示信息之后，可以向终端设备以初传调度的方式发送该TB，使得终端设备可以获取该TB相应的TBS的信息，提高了译码成功的概率。
基于上述方案，终端设备可以向网络设备发送第三指示信息，以告知网络设备是否接收第二指示信息。若第三指示信息指示终端设备未接收第二指示信息，网络设备可以对该TB的调度作出调整，避免终端设备在未收到第二指示信息之后，网络设备仍然多次发送调度该TB重传的错误情况，从而改善网络性能。并且，网络设备向终端设备以初传调度的方式发送该TB，可以使得终端设备正确接收重传调度的方式的TB，提高自解码的成功率。
本文中描述的各个实施例可以为独立的方案，也可以根据内在逻辑进行组合，这些方案都落入本申请的保护范围中。
可以理解的是，上述各个方法实施例中，由终端设备实现的方法和操作，也可以由可用于终端设备的部件(例如芯片或者电路)实现，由网络设备实现的方法和操作，也可以由可用于网络设备的部件(例如芯片或者电路)实现。
以上，结合图4详细说明了本申请实施例提供的方法。以下，结合图5至图8详细说明本申请实施例提供的通信装置。应理解，装置实施例的描述与方法实施例的描述相互对应，因此，未详细描述的内容可以参见上文方法实施例，为了简洁，这里不再赘述。
上述主要从各个网元之间交互的角度对本申请实施例提供的方案进行了介绍。可以理解的是，各个网元，例如发射端设备或者接收端设备，为了实现上述功能，其包含了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该可以意识到，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，本申请能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，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。
本申请实施例可以根据上述方法示例对发射端设备或者接收端设备进行功能模块的划分，例如，可以对应各个功能划分各个功能模块，也可以将两个或两个以上的功能集成在一个处理模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。需要说明的是，本申请实施例中对模块的划分是示意性的，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。下面以采用对应各个功能划分各个功能模块为例进行说明。
图5是本申请实施例提供的通信装置500的示意性框图。该通信装置500包括收发单元510和处理单元520。收发单元510可以实现相应的通信功能，处理单元510用于进行数据处理。收发单元510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和/或数据，处理单元520可以读取存储单元中的指令和/或数据，以使得通信装置实现前述方法实施例。
该通信装置500可以用于执行上文方法实施例中终端设备所执行的动作，这时，该通信装置500可以为终端设备或者可配置于终端设备的部件，收发单元510用于执行上文方法实施例中终端设备侧的收发相关的操作，处理单元520用于执行上文方法实施例中终端 设备侧的处理相关的操作。
例如，当通信装置500用于实现图4中的方法400实施例中终端设备的功能时，收发单元510用于：S401、S403、S404；处理单元520用于：S402。
有关上述收发单元510和处理单元520更详细的描述可以直接参考图4中的方法400的相关描述，这里不加赘述。
作为另一种设计，该通信装置500可以用于执行上文方法实施例中网络设备所执行的动作，这时，该通信装置500可以为网络设备或者可配置于网络设备的部件，收发单元510用于执行上文方法实施例中网络设备侧的收发相关的操作，处理单元520用于执行上文方法实施例中网络设备侧的处理相关的操作。
例如，当通信装置500用于实现图4中的方法400实施例中网络设备的功能时，收发单元510用于S401、S403、S404。
有关上述收发单元510和处理单元520更详细的描述可以直接参考图4中的方法400的相关描述，这里不加赘述。
上文实施例中的处理单元520可以由至少一个处理器或处理器相关电路实现。收发单元510可以由收发器或收发器相关电路实现。收发单元510还可称为通信单元或通信接口。存储单元可以通过至少一个存储器实现。
如图6所示，本申请实施例还提供一种通信装置600。该通信装置600包括处理器66，处理器66与存储器620耦合，存储器620用于存储计算机程序或指令和/或数据，处理器66用于执行存储器620存储的计算机程序或指令和/或数据，使得上文方法实施例中的方法被执行。
可选地，该通信装置600包括的处理器66为一个或多个。
可选地，如图6所示，该通信装置600还可以包括存储器620。
可选地，该通信装置600包括的存储器620可以为一个或多个。
可选地，该存储器620可以与该处理器66集成在一起，或者分离设置。
可选地，如图6所示，该通信装置600还可以包括收发器630，收发器630用于信号的接收和/或发送。例如，处理器66用于控制收发器630进行信号的接收和/或发送。
作为一种方案，该通信装置600用于实现上文方法实施例中由终端设备执行的操作。
例如，处理器66用于实现上文方法实施例中由终端设备执行的处理相关的操作，收发器630用于实现上文方法实施例中由终端设备执行的收发相关的操作。
作为另一种方案，该通信装置600用于实现上文方法实施例中由网络设备执行的操作。
例如，处理器66用于实现上文方法实施例中由网络设备执行的处理相关的操作，收发器630用于实现上文方法实施例中由网络设备执行的收发相关的操作。
本申请实施例还提供一种通信装置700，该通信装置700可以是终端设备也可以是芯片。该通信装置700可以用于执行上述方法实施例中由终端设备所执行的操作。
当该通信装置700为终端设备时，图7示出了本申请实施例提供的一种简化的终端设备的结构示意图。如图7所示，终端设备包括处理器、存储器、射频电路、天线以及输入输出装置。处理器主要用于对通信协议以及通信数据进行处理，以及对终端设备进行控制，执行软件程序，处理软件程序的数据等。存储器主要用于存储软件程序和数据。射频电路主要用于基带信号与射频信号的转换以及对射频信号的处理。天线主要用于收发电磁波形 式的射频信号。输入输出装置，例如触摸屏、显示屏，键盘等主要用于接收用户输入的数据以及对用户输出数据。需要说明的是，有些种类的终端设备可以不具有输入输出装置。
当需要发送数据时，处理器对待发送的数据进行基带处理后，输出基带信号至射频电路，射频电路将基带信号进行射频处理后将射频信号通过天线以电磁波的形式向外发送。当有数据发送到终端设备时，射频电路通过天线接收到射频信号，将射频信号转换为基带信号，并将基带信号输出至处理器，处理器将基带信号转换为数据并对该数据进行处理。为便于说明，图7中仅示出了一个存储器和处理器，在实际的终端设备产品中，可以存在一个或多个处理器和一个或多个存储器。存储器也可以称为存储介质或者存储设备等。存储器可以是独立于处理器设置，也可以是与处理器集成在一起，本申请实施例对此不做限制。
在本申请实施例中，可以将具有收发功能的天线和射频电路视为终端设备的收发单元，将具有处理功能的处理器视为终端设备的处理单元。
如图7所示，终端设备包括收发单元710和处理单元720。收发单元710也可以称为收发器、收发机、收发装置等。处理单元720也可以称为处理器，处理单板，处理模块、处理装置等。
可选地，可以将收发单元710中用于实现接收功能的器件视为接收单元，将收发单元710中用于实现发送功能的器件视为发送单元，即收发单元710包括接收单元和发送单元。收发单元有时也可以称为收发机、收发器、或收发电路等。接收单元有时也可以称为接收机、接收器、或接收电路等。发送单元有时也可以称为发射机、发射器或者发射电路等。
例如，处理单元720用于执行图4中终端设备侧的处理动作；收发单元710用于执行图4中终端设备侧的收发动作。
应理解，图7仅为示例而非限定，上述包括收发单元和处理单元的终端设备可以不依赖于图7所示的结构。
当该通信装置700为芯片时，该芯片包括收发单元和处理单元。其中，收发单元可以是输入输出电路或通信接口；处理单元可以为该芯片上集成的处理器或者微处理器或者集成电路。
本申请实施例还提供一种通信装置800，该通信装置800可以是网络设备也可以是芯片。该通信装置800可以用于执行上述方法实施例中由网络设备所执行的操作。
当该通信装置800为网络设备时，例如为基站。图8示出了本申请实施例提供的一种简化的基站结构示意图。基站包括810部分以及820部分。810部分主要用于射频信号的收发以及射频信号与基带信号的转换；820部分主要用于基带处理，对基站进行控制等。810部分通常可以称为收发单元、收发机、收发电路、或者收发器等。820部分通常是基站的控制中心，通常可以称为处理单元，用于控制基站执行上述方法实施例中网络设备侧的处理操作。
810部分的收发单元，也可以称为收发机或收发器等，其包括天线和射频电路，其中射频电路主要用于进行射频处理。可选地，可以将810部分中用于实现接收功能的器件视为接收单元，将用于实现发送功能的器件视为发送单元，即810部分包括接收单元和发送单元。接收单元也可以称为接收机、接收器、或接收电路等，发送单元可以称为发射机、发射器或者发射电路等。
820部分可以包括一个或多个单板，每个单板可以包括一个或多个处理器和一个或多个存储器。处理器用于读取和执行存储器中的程序以实现基带处理功能以及对基站的控制。若存在多个单板，各个单板之间可以互联以增强处理能力。作为一种可选的实施方式，也可以是多个单板共用一个或多个处理器，或者是多个单板共用一个或多个存储器，或者是多个单板同时共用一个或多个处理器。
例如，810部分的收发单元用于执行图4所示实施例中由网络设备执行的收发相关的步骤。
应理解，图8仅为示例而非限定，上述包括收发单元和处理单元的网络设备可以不依赖于图8所示的结构。
当该通信装置800为芯片时，该芯片包括收发单元和处理单元。其中，收发单元可以是输入输出电路、通信接口；处理单元为该芯片上集成的处理器或者微处理器或者集成电路。
本申请实施例还提供一种计算机可读存储介质，其上存储有用于实现上述方法实施例中由终端设备执行的方法，或由网络设备执行的方法的计算机指令。
例如，该计算机程序被计算机执行时，使得该计算机可以实现上述方法实施例中由终端设备执行的方法，或由网络设备执行的方法。
本申请实施例还提供一种包含指令的计算机程序产品，该指令被计算机执行时使得该计算机实现上述方法实施例中由终端设备执行的方法，或由网络设备执行的方法。
本申请实施例还提供一种通信系统，该通信系统包括上文实施例中的网络设备与终端设备。
所属领域的技术人员可以清楚地了解到，为描述方便和简洁，上述提供的任一种通信装置中相关内容的解释及有益效果均可参考上文提供的对应的方法实施例，此处不再赘述。
在本申请实施例中，终端设备或网络设备可以包括硬件层、运行在硬件层之上的操作系统层，以及运行在操作系统层上的应用层。其中，硬件层可以包括中央处理器(central processing unit，CPU)、内存管理单元(memory management unit，MMU)和内存(也称为主存)等硬件。操作系统层的操作系统可以是任意一种或多种通过进程(process)实现业务处理的计算机操作系统，例如，Linux操作系统、Unix操作系统、Android操作系统、iOS操作系统或windows操作系统等。应用层可以包含浏览器、通讯录、文字处理软件、即时通信软件等应用。
本申请实施例并未对本申请实施例提供的方法的执行主体的具体结构进行特别限定，只要能够通过运行记录有本申请实施例提供的方法的代码的程序，以根据本申请实施例提供的方法进行通信即可。例如，本申请实施例提供的方法的执行主体可以是终端设备或网络设备，或者，是终端设备或网络设备中能够调用程序并执行程序的功能模块。
本申请的各个方面或特征可以实现成方法、装置或使用标准编程和/或工程技术的制品。本文中使用的术语“制品”可以涵盖可从任何计算机可读器件、载体或介质访问的计算机程序。
其中，计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。可用介质(或者说计算机可读介质)例如可以包括但不限于：磁性介质或磁存储器件(例如，软盘、硬盘(如移动硬盘)、 磁带)、光介质(例如，光盘、压缩盘(compact disc，CD)、数字通用盘(digital versatile disc，DVD)等)、智能卡和闪存器件(例如，可擦写可编程只读存储器(erasable programmable read-only memory，EPROM)、卡、棒或钥匙驱动器等)、或者半导体介质(例如固态硬盘(solid state disk，SSD)等、U盘、只读存储器(read-only memory，ROM)、随机存取存储器(random access memory，RAM)等各种可以存储程序代码的介质。
本文描述的各种存储介质可代表用于存储信息的一个或多个设备和/或其它机器可读介质。术语“机器可读介质”可以包括但不限于：无线信道和能够存储、包含和/或承载指令和/或数据的各种其它介质。
应理解，本申请实施例中提及的处理器可以是中央处理单元(central processing unit，CPU)，还可以是其他通用处理器、数字信号处理器(digital signal processor，DSP)、专用集成电路(application specific integrated circuit，ASIC)、现成可编程门阵列(field programmable gate array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
还应理解，本申请实施例中提及的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(read-only memory，ROM)、可编程只读存储器(programmable ROM，PROM)、可擦除可编程只读存储器(erasable PROM，EPROM)、电可擦除可编程只读存储器(electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory，RAM)。例如，RAM可以用作外部高速缓存。作为示例而非限定，RAM可以包括如下多种形式：静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(dynamic RAM，DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(direct rambus RAM，DR RAM)。
需要说明的是，当处理器为通用处理器、DSP、ASIC、FPGA或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件时，存储器(存储模块)可以集成在处理器中。
还需要说明的是，本文描述的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
在本申请所提供的几个实施例中，应该理解到，所揭露的装置和方法，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是示意性的，例如，上述单元的划分，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。此外，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。
上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实现本申请提供的方案。
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。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。
当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。该计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行计算机程序指令时，全部或部分地产生按照本申请实施例所述的流程或功能。计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。例如，计算机可以是个人计算机，服务器，或者网络设备等。计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。关于计算机可读存储介质，可以参考上文描述。
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，可轻易想到的变化或替换，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权利要求和说明书的保护范围为准。

Claims (21)

  1. 一种信息反馈的方法，其特征在于，包括：
    终端设备接收网络设备发送的第一指示信息，所述第一指示信息用于调度传输块TB的重传；
    所述终端设备判断是否已接收第二指示信息，其中，所述第二指示信息用于调度所述TB的初传；
    所述终端设备向所述网络设备发送第三指示信息，所述第三指示信息用于指示所述终端设备是否已接收所述第二指示信息。
  2. 根据权利要求1所述的方法，其特征在于，所述终端设备判断是否已接收第二指示信息，包括：
    在满足预设条件的情况下，所述终端设备判断未接收所述第二指示信息，其中，所述预设条件包括以下至少一项：
    所述终端设备接收第四指示信息与所述第一指示信息之间未接收用于调度所述TB的初传的指示信息、所述第一指示信息的新数据指示NDI的值与所述第四指示信息的NDI的值发生翻转，以及所述第一指示信息的混合自动重传请求HARQ进程号与所述第四指示信息的HARQ进程号相同，其中，所述第四指示信息用于调度所述TB的前一个TB的初传或重传，所述第四指示信息的接收时间先于所述第一指示信息的接收时间。
  3. 根据权利要求1或2所述的方法，其特征在于，所述终端设备接收所述第一指示信息的末尾时刻与所述终端设备发送所述第三指示信息的起始时刻之间的时间间隔大于或者等于第一时段，所述第一时段小于或者等于第二时段，所述第二时段为所述终端设备接收下行共享物理信道PDSCH的末尾时刻与发送所述PDSCH上承载的TB对应的混合自动重传请求确认HARQ-ACK信息的起始时刻之间的最短时间。
  4. 根据权利要求1至3中任一项所述的方法，其特征在于，所述终端设备向所述网络设备发送第三指示信息，包括：
    所述终端设备在第一时间单元向所述网络设备发送所述第三指示信息，其中，
    所述第一时间单元为发送所述第一指示信息调度的重传TB对应的HARQ-ACK信息的时间单元，或
    所述第一时间单元为根据时间单元偏移指示信息与所述终端设备接收所述第一指示信息的时间单元索引确定的，所述时间单元偏移指示信息指示时间单元的偏移量，或
    所述第一时间单元为根据所述终端设备接收所述第一指示信息的时间单元与所述第一时段确定的。
  5. 根据权利要求4所述的方法，其特征在于，在所述第一时间单元为根据所述第一指示信息与所述终端设备接收所述第一指示信息的时间单元索引确定的情况下，所述时间单元偏移指示信息包含于所述第一指示信息。
  6. 根据权利要求4或5所述的方法，其特征在于，所述第一时间单元为所述终端设备接收所述第一指示信息的时间单元索引与所述时间单元偏移量叠加的时间单元索引对应的时间单元。
  7. 根据权利要求4所述的方法，其特征在于，在所述第一时间单元为根据所述终端设备接收所述第一指示信息的时间单元与所述第一时段确定的情况下，所述第一时间单元为所述终端设备接收所述第一指示信息的末尾时刻与所述第一时段叠加之后的第一个上行时间单元。
  8. 根据权利要求1或2所述的方法，其特征在于，所述第三指示信息与所述第一指示信息调度的重传TB重传对应的HARQ-ACK信息对应相同的PUCCH。
  9. 一种信息反馈的方法，其特征在于，包括：
    网络设备向终端设备发送第一指示信息，所述第一指示信息用于调度TB的重传；
    所述网络设备接收所述终端设备发送的第三指示信息，所述第三指示信息用于指示所述终端设备是否已接收第二指示信息，其中，所述第二指示信息用于调度所述TB的初传，所述第二指示信息的发送时间先于所述第一指示信息的发送时间。
  10. 根据权利要求9所述的方法，其特征在于，所述方法还包括：
    所述网络设备向所述终端设备发送第四指示信息，所述第四指示信息用于调度所述TB的前一个TB的初传或重传。
  11. 根据权利要求9或10所述的方法，其特征在于，所述网络设备接收所述终端设备发送的第三指示信息，包括：
    所述网络设备在第一时间单元接收所述终端设备发送的所述第三指示信息，其中，
    所述第一时间单元为发送所述第一指示信息调度的重传TB对应的HARQ-ACK信息的时间单元，或
    所述第一时间单元为根据时间单元偏移指示信息与所述终端设备接收所述第一指示信息的时间单元索引确定的，所述时间单元偏移指示信息指示时间单元的偏移量，或
    所述第一时间单元为根据所述终端设备接收所述第一指示信息的时间单元与所述第一时段确定的。
  12. 根据权利要求11所述的方法，其特征在于，在所述第一时间单元为根据所述第一指示信息与所述终端设备接收所述第一指示信息的时间单元索引确定的情况下，所述时间单元偏移指示信息包含于所述第一指示信息。
  13. 根据权利要求11或12所述的方法，其特征在于，所述第一时间单元为所述终端设备接收所述第一指示信息的时间单元索引与所述时间单元偏移量叠加的时间单元索引对应的时间单元。
  14. 根据权利要求11所述的方法，其特征在于，在所述第一时间单元为根据所述终端设备接收所述第一指示信息的时间单元与所述第一时段确定的情况下，所述第一时间单元为所述终端设备接收所述第一指示信息的末尾时刻与所述第一时段叠加之后的第一个上行时间单元。
  15. 根据权利要求9或10所述的方法，其特征在于，所述第三指示信息与所述第一指示信息调度的重传TB对应的HARQ-ACK信息对应相同的PUCCH。
  16. 一种通信装置，其特征在于，包括用于执行如权利要求1至8，或，9至15中任一项所述方法的模块。
  17. 一种通信装置，其特征在于，包括处理器和存储器，所述处理器和所述存储器耦合，所述处理器用于控制所述装置实现如权利要求1至8，或，9至15中任一项所述的方 法。
  18. 一种通信装置，其特征在于，包括处理器和接口电路，所述接口电路用于接收来自所述通信装置之外的其它通信装置的信号并传输至所述处理器或将来自所述处理器的信号发送给所述通信装置之外的其它通信装置，所述处理器通过逻辑电路或执行代码指令用于实现如权利要求1至8，或，9至15中任一项所述的方法。
  19. 一种计算机可读存储介质，其特征在于，所述存储介质中存储有计算机程序或指令，当所述计算机程序或指令被通信装置执行时，实现如权利要求1至8，或，9至15中任一项所述的方法。
  20. 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指令，当所述指令被计算机运行时，实现如权利要求1至8，或，9至15中任一项所述的方法。
  21. 一种芯片，其特征在于，所述芯片包括处理器与数据接口，所述处理器通过所述数据接口读取存储器上存储的指令，以执行如权利要求1至8，或，9至15中任一项所述的方法。
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