WO2021062609A1 - 通信方法和通信装置 - Google Patents

通信方法和通信装置 Download PDF

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Publication number
WO2021062609A1
WO2021062609A1 PCT/CN2019/109398 CN2019109398W WO2021062609A1 WO 2021062609 A1 WO2021062609 A1 WO 2021062609A1 CN 2019109398 W CN2019109398 W CN 2019109398W WO 2021062609 A1 WO2021062609 A1 WO 2021062609A1
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WO
WIPO (PCT)
Prior art keywords
pdsch
group
dci
time
unit
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PCT/CN2019/109398
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English (en)
French (fr)
Inventor
吴作敏
林亚男
Original Assignee
Oppo广东移动通信有限公司
Oppo广东移动通信有限公司深圳分公司
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Application filed by Oppo广东移动通信有限公司, Oppo广东移动通信有限公司深圳分公司 filed Critical Oppo广东移动通信有限公司
Priority to PCT/CN2019/109398 priority Critical patent/WO2021062609A1/zh
Priority to CN201980095282.9A priority patent/CN113994613A/zh
Publication of WO2021062609A1 publication Critical patent/WO2021062609A1/zh
Priority to US17/562,782 priority patent/US20220123906A1/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829Arrangements specially adapted for the receiver end
    • H04L1/1854Scheduling and prioritising arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1822Automatic repetition systems, e.g. Van Duuren systems involving configuration of automatic repeat request [ARQ] with parallel processes
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0055Physical resource allocation for ACK/NACK

Definitions

  • This application relates to the field of communications, and in particular to a communication method and communication device.
  • the fifth generation (5G) communication system supports dynamic hybrid automatic repeat request (HARQ) feedback timing.
  • the network device can schedule the terminal device to receive the physical downlink shared channel (PDSCH) through the downlink control information (DCI), and the DCI can also include the physical uplink control channel (PUCCH) indication Information so that the terminal device can send the HARQ feedback information of the PDSCH through the PUCCH.
  • PDSCH physical downlink shared channel
  • DCI downlink control information
  • PUCCH physical uplink control channel
  • the terminal device After the terminal device receives the PDSCH belonging to a HARQ process, and before the terminal device sends the HARQ feedback information of the PDSCH, the terminal device does not expect to receive another PDSCH of the HARQ process to prevent the successfully decoded PDSCH from being throw away. However, in some cases, for example, in the new radio unlicensed (NR-U) scenario based on unlicensed spectrum, the terminal device may not be able to obtain the opportunity to send HARQ feedback information for a long time, resulting in a long HARQ process. Occupied.
  • NR-U new radio unlicensed
  • the present application provides a communication method and communication device, which can be occupied by a HARQ process for a long time.
  • a communication method including: receiving a first PDSCH within a time unit n, the first PDSCH belongs to a first HARQ process, and the first PDSCH belongs to a first PDSCH group, and n is greater than Or an integer equal to 0; the second PDSCH is not expected to be received within a preset time period after the time unit n, where the second PDSCH belongs to the first HARQ process; or, the second PDSCH is received, and the second PDSCH is received.
  • the second PDSCH belongs to the first HARQ process, wherein the second PDSCH belongs to a second PDSCH group, and the second PDSCH group is different from the first PDSCH group; and/or, the second PDSCH
  • the transport block carried is different from the transport block carried by the first PDSCH.
  • another communication method including: receiving a first DCI and a second DCI within a time unit n, the first DCI schedules a first PDSCH, the second DCI schedules a second PDSCH, and the The first indication information in the first DCI indicates the time sequence of the uplink feedback resource corresponding to the first PDSCH, and the second indication information in the second DCI indicates the time sequence of the uplink feedback resource corresponding to the second PDSCH to be determined;
  • the second PDSCH is determined according to the counted downlink allocation indicator C-DAI in the first DCI and the C-DAI in the second DCI
  • the timing of the corresponding uplink feedback resource or, when the first PDSCH and the second PDSCH belong to different PDSCH groups, and when the first DCI triggers feedback of the PDSCH group to which the second PDSCH belongs Determining that the time sequence of the uplink feedback resource corresponding to the PD
  • another communication method including: sending a first PDSCH within a time unit n, the first PDSCH belongs to a first HARQ process, and the first PDSCH belongs to a first PDSCH group, and n is An integer greater than or equal to 0; the second PDSCH is not sent within a preset time period after the time unit n, where the second PDSCH belongs to the first HARQ process; or, after the time unit n After a preset period of time, the second PDSCH is sent, where the second PDSCH belongs to the first HARQ process; or, the second PDSCH is sent, and the second PDSCH belongs to the first HARQ process, where the second PDSCH belongs to the first HARQ process.
  • the PDSCH belongs to a second PDSCH group, and the second PDSCH group is different from the first PDSCH group; and/or, the transport block carried by the second PDSCH is different from the transport block carried by the first PDSCH .
  • another communication method including: sending a first DCI and a second DCI within a time unit n, the first DCI schedules a first PDSCH, the second DCI schedules a second PDSCH, and the The first indication information in the first DCI indicates the time sequence of the uplink feedback resource corresponding to the first PDSCH, and the second indication information in the second DCI indicates the time sequence of the uplink feedback resource corresponding to the second PDSCH to be determined;
  • the first PDSCH and the second PDSCH belong to the same PDSCH group, according to the counted downlink allocation indication C-DAI in the first DCI and the C-DAI in the second DCI, it is determined whether to determine whether according to the first DCI.
  • the timing of the uplink feedback resource corresponding to a PDSCH receives HARQ feedback information corresponding to the PDSCH group to which the second PDSCH belongs; or, when the first PDSCH and the second PDSCH belong to different PDSCH groups, and when all
  • the first DCI triggers feedback of the PDSCH group to which the second PDSCH belongs, determining to receive HARQ feedback information corresponding to the PDSCH group to which the second PDSCH belongs according to the timing of the uplink feedback resource corresponding to the first PDSCH; or, When the first PDSCH and the second PDSCH belong to different PDSCH groups, and when the first indication information does not trigger feedback of the PDSCH group to which the second PDSCH belongs, it is determined to send the third DCI, so The third DCI is used to indicate the time sequence of the uplink feedback resource corresponding to the PDSCH group to which the second PDSCH belongs.
  • a communication device which can implement the function corresponding to the method in the first aspect or the second aspect.
  • the function can be implemented by hardware or by hardware executing corresponding software.
  • the hardware or software includes one or more units or modules corresponding to the above-mentioned functions.
  • the device is a terminal device or a chip.
  • the device may include a processing unit and a transceiving unit.
  • the processing unit may be a processor, and the transceiving unit may be a transceiver;
  • the terminal device may also include a storage unit, and the storage unit may be a memory; the storage unit is used to store instructions, and the processing The unit executes the instructions stored in the storage unit, so that the terminal device executes the method described in the first aspect or the second aspect.
  • the processing unit may be a processor, and the transceiving unit may be an input/output interface, a pin or a circuit, etc.; the processing unit executes the instructions stored in the storage unit to enable the terminal device containing the chip
  • the storage unit may be a storage unit (for example, a register, a cache, etc.) in the chip, or a storage unit located outside the chip (for example, a read-only memory, Random access memory, etc.).
  • a communication device which can realize the function corresponding to the method in the third aspect or the fourth aspect, and the function can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more units or modules corresponding to the above-mentioned functions.
  • the device is a network device or chip.
  • the device may include a processing unit and a transceiving unit.
  • the processing unit may be a processor, and the transceiving unit may be a transceiver;
  • the network device may also include a storage unit, and the storage unit may be a memory; the storage unit is used to store instructions, and the processing The unit executes the instructions stored in the storage unit, so that the network device executes the method described in the third aspect or the fourth aspect.
  • the processing unit may be a processor, and the transceiving unit may be an input/output interface, a pin or a circuit, etc.; the processing unit executes the instructions stored in the storage unit to enable the network device containing the chip
  • the storage unit may be a storage unit (for example, a register, a cache, etc.) in the chip, or a storage unit located outside the chip (for example, a read-only memory, Random access memory, etc.).
  • a computer-readable storage medium stores a computer program.
  • the processor executes the method described in the first aspect or the second aspect. .
  • a computer-readable storage medium stores a computer program.
  • the processor executes the method described in the third aspect or the fourth aspect. .
  • a computer program product including computer program code, which when the computer program code is executed by a processor, causes the processor to execute the method described in the first aspect or the second aspect.
  • a computer program product including computer program code.
  • the processor executes the method described in the third aspect or the fourth aspect.
  • a computer program which when run on a computer, causes the computer to execute the method described in the first aspect or the second aspect.
  • a computer program which when running on a computer, causes the computer to execute the method described in the third aspect or the fourth aspect.
  • Figure 1 is a schematic diagram of a communication system suitable for the present application
  • Fig. 2 is a schematic diagram of a communication scenario provided by the present application.
  • Fig. 3 is a schematic diagram of a communication method provided by the present application.
  • FIG. 4 is a schematic diagram of another communication scenario provided by this application.
  • FIG. 5 is a schematic diagram of another communication method provided by the present application.
  • FIG. 6 is a schematic diagram of another communication scenario provided by this application.
  • Fig. 7 is a schematic diagram of a communication device provided by the present application.
  • Fig. 8 is a schematic diagram of another communication device provided by the present application.
  • FIG. 9 is a schematic diagram of still another communication device provided by the present application.
  • FIG. 10 is a schematic diagram of still another communication device provided by the present application.
  • Fig. 11 is a schematic diagram of a communication device provided by the present application.
  • GSM Global System of Mobile Communication
  • CDMA Code Division Multiple Access
  • WCDMA broadband code division multiple access
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • LTE-A advanced Advanced long term evolution
  • NR New Radio
  • NR NR system evolution system
  • LTE-based access to unlicensed spectrum LTE-U System
  • NR-U Universal Mobile Telecommunication System
  • UMTS Universal Mobile Telecommunication System
  • WLAN Wireless Local Area Networks
  • WiFi Wireless Fidelity
  • future 6G systems or other communication systems etc.
  • D2D Device to Device
  • M2M Machine to Machine
  • MTC machine type communication
  • V2V vehicle to vehicle
  • the communication system in the embodiment of the present application may also be applied to a carrier aggregation (CA) scenario, a dual connectivity (DC) scenario, a standalone (SA) network deployment scenario, and the like.
  • CA carrier aggregation
  • DC dual connectivity
  • SA standalone
  • Fig. 1 is a schematic diagram of a possible wireless communication system applied by an embodiment of the present application.
  • the wireless communication system 100 may include a network device 110.
  • the network device 110 may provide communication coverage for a specific geographic area, and may communicate with terminal devices located in the coverage area.
  • the network device 100 may be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, a base station (NodeB, NB) in a WCDMA system, or an evolved base station in an LTE system (Evolutional Node B, eNB or eNodeB), or the wireless controller in the Cloud Radio Access Network (CRAN), or the network device can be a relay station, an access point, a vehicle-mounted device, a wearable device, Network equipment in the future network side equipment or the future evolution of the public land mobile network (Public Land Mobile Network, PLMN), etc.
  • BTS Base Transceiver Station
  • NodeB, NB base station
  • LTE Long Term Evolutional Node B
  • eNB evolved base station
  • CRAN Cloud Radio Access Network
  • the network device can be a relay station, an access point, a vehicle-mounted device, a wearable device, Network equipment in the future network side equipment or the future evolution of the public land mobile network (Public Land Mobile
  • the wireless communication system 100 further includes at least one terminal device 120 located within the coverage area of the network device 110.
  • the terminal device 120 may be mobile or fixed.
  • the terminal device 120 may refer to a user equipment, an access terminal, a user unit, a user station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user device.
  • the terminal device can also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital processing (Personal Digital Assistant, PDA), with wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in the future 5G network or future evolution of the public land mobile network (Public Land Mobile Network, PLMN) Terminal equipment, etc., which are not limited in the embodiment of the present application.
  • the terminal devices 120 may also perform direct terminal (Device to Device, D2D) communication.
  • the network device 110 may provide services for a cell, and the terminal device 120 communicates with the network device 110 through transmission resources used by the cell, such as frequency domain resources, or spectrum resources.
  • the cell may be a cell corresponding to the network device 110.
  • the cell may belong to a macro base station or a base station corresponding to a small cell.
  • the small cell here may include: Metro cell and Micro cell. , Pico cells, Femto cells, etc. These small cells have the characteristics of small coverage and low transmit power, and are suitable for providing high-rate data transmission services.
  • the wireless communication system 100 may include a plurality of network devices, and the coverage area of each network device may include other numbers of terminal devices.
  • the wireless communication system 100 may also include other network entities such as a network controller and a mobility management entity.
  • the communication system 100 is only an example, and the communication system applicable to the present application is not limited to this.
  • the number of network devices and terminal devices included in the communication system 100 may also be other numbers.
  • the technical solution of the present application will be described below by taking the communication system 100 as a 5G communication system as an example.
  • the terminal devices and network devices below are no longer accompanied by reference numerals.
  • the downlink data transmission of the 5G mobile communication system supports semi-persistent scheduling (SPS) PDSCH and dynamically scheduled PDSCH.
  • SPS semi-persistent scheduling
  • HARQ is an efficient transmission mechanism.
  • the reliability of downlink data transmission can be greatly improved through retransmission;
  • the network equipment determines whether to retransmit according to the acknowledgement (ACK) or negative acknowledgement (NACK) fed back by the terminal device.
  • the network device usually retransmits when the terminal device feeds back the NACK, thereby improving the data transmission efficiency.
  • ACK or NACK is collectively referred to as feedback information, or HARQ feedback information, or HARQ-ACK feedback information.
  • a network device can send multiple time-domain overlapping or time-domain non-overlapping PDSCHs to a terminal device within a time unit, and the network device can also send one or more PDSCHs to the terminal device on multiple carriers, thereby This increases the complexity of the terminal device's feedback of ACK/NACK on the PUCCH. Therefore, the ACK/NACK fed back by the terminal device on the PUCCH within a time unit may correspond to multiple time domain locations or PDSCH occasions on multiple carriers.
  • the time domain resources used for wireless communication between network devices and terminal devices can be divided into multiple time units. Moreover, in this application, multiple time units may be continuous or non-continuous, that is, there are preset time intervals between some adjacent time units.
  • a time unit may be one or more subframes; or, it may also be one or more slots; or, it may also be one or more symbols.
  • the symbols are also called time-domain symbols.
  • the time-domain symbols can be orthogonal frequency division multiplexing (OFDM) symbols, or single carrier frequency division multiple access (SC-). FDMA) symbol.
  • the carrier involved in this application may also be called a frequency band, a component carrier (CC), a bandwidth part (BWP), or a cell (cell), or the carrier may have other names.
  • CC component carrier
  • BWP bandwidth part
  • cell cell
  • a carrier set may include one or more CCs, and may also include one or more BWPs.
  • one CC may include multiple BWPs, and the subcarrier spacing (SCS) between different BWPs may be the same or different.
  • SCS subcarrier spacing
  • the 5G communication system supports two HARQ codebook configurations.
  • the HARQ codebook can be understood as: a set of ACK/NACK corresponding to the PDSCH (or a set of HARQ feedback information) that needs to be fed back on a certain uplink time unit.
  • the HARQ codebook contains two meanings: first, which PDSCH ACK/NACKs are contained in the HARQ codebook; second, the sequence of the ACK/NACK of these PDSCHs in the codebook.
  • the above two types of HARQ codebooks include dynamic codebooks and semi-static codebooks.
  • Dynamic codebook is also called Type 2 (Type 2) codebook.
  • the terminal device detects the PDCCH at each physical downlink control channel (PDCCH) monitoring occasion (monitoring occasion), obtains the DCI, and obtains the DCI according to the time domain resource allocation domain in the DCI and the HARQ timing indicator (PDSCH)
  • the -to-HARQ-timing-indicator) field determines the ACK/NACK feedback time slot corresponding to the PDSCH scheduled by the DCI.
  • the terminal device first determines the time slot number of the PDSCH according to the time slot number of the PDCCH and the time slot offset value (K0) from the PDCCH to the PDSCH contained in the time domain resource allocation field, and then obtains the timing offset (K1) according to the HARQ timing indicator field. ), that is, the offset value from the time slot of the PDSCH to the feedback time slot corresponding to the PDSCH, so as to determine in which time slot the ACK/NACK is sent.
  • the terminal device determines the codebook in the feedback slot according to downlink assignment index (DAI) information contained in all PDCCHs pointing to the same feedback slot. For example, the terminal device determines the number of PDSCHs according to the received DCI format 1_0 or the DAI contained in the DCI format 1_1, and determines the time domain resource allocation field and the HARQ timing indicator field in the DCI format 1_0 or DCI format 1_1. Slot n sends the ACK/NACK of the above-mentioned PDSCH. Subsequently, the terminal device generates a dynamic codebook according to the reception status of the PDSCH.
  • DAI downlink assignment index
  • DCI format 1_0 can also be called back-off DCI, which indicates the presence or absence of each bit field in the DCI, the width of each bit field, and the physical layer parameter values corresponding to each value are all predefined and are not required High-level signaling configuration; DCI format 1_1 can also be referred to as normal DCI.
  • the bit fields contained in normal DCI can be added or deleted through high-level signaling configuration, and the width and value meaning of bit fields can also be configured through high-level signaling.
  • the fallback DCI is used for the downlink data scheduling before the user completes the initial access (that is, the period when the high-level parameters are not obtained), or the downlink data scheduling during the high-level parameter change process (and the high-level parameter fuzzy period).
  • Both DCI format 1_0 and DCI format 1_1 contain the HARQ timing indicator field.
  • the size of this field is generally three bits, indicating the timing offset K1 between the PDSCH transmission time slot and the corresponding feedback time slot.
  • the value range is "000" ⁇ "111", the specifically indicated K1 value may be configured or predefined by radio resource control (radio resource control, RRC) signaling.
  • RRC signaling configures 8 values from 16 values, corresponding to "000" to "111"; for fallback DCI, the predefined 8 values are 1 to 8.
  • Type 1 codebook Semi-static codebook is also called Type 1 (Type 1) codebook.
  • the network equipment configures the K1 set (K1set) and the time domain resource allocation table for the terminal equipment through protocol pre-defined or high-level signaling.
  • the terminal equipment determines the candidate time domain position of the PDSCH according to the time domain resource allocation table, and according to the candidate time domain position of the PDSCH Set with K1 to determine the time slot where the PDSCH feedback information may be located.
  • the terminal equipment determines the PDSCH time set associated with the uplink time slot according to the candidate time domain position of the PDSCH and the K1 set, that is, the associated downlink time slot and the PDSCH time set in the downlink time slot, and then according to the associated The PDSCH time set generates the feedback codebook.
  • the terminal device After the terminal device receives the PDSCH of a HARQ process, the terminal device does not expect to receive another PDSCH transmitted using the same HARQ process before the transmission of the feedback information corresponding to the HARQ process ends.
  • the NR system When the NR system is applied to the unlicensed frequency band, it can support independent network deployment, that is, it does not rely on the carrier on the licensed frequency band to provide auxiliary services. In this scenario, after receiving the PDSCH on the unlicensed carrier, the terminal device needs to send the feedback information corresponding to the PDSCH (or the ACK/NACK corresponding to the PDSCH) on the unlicensed carrier.
  • the HARQ timing indicator field can indicate that the time domain position of the uplink feedback resource corresponding to the PDSCH can also indicate that the time domain position of the uplink feedback resource corresponding to the PDSCH is temporarily uncertain.
  • the pre-configured HARQ timing set includes the value k L indicating the invalid resource indicator.
  • the HARQ timing indicator field indicates the invalid value k L in the HARQ timing set, it means that the time domain resource of the uplink feedback resource corresponding to the PDSCH is temporarily unavailable. determine.
  • the network device can group the scheduled PDSCH and indicate the grouping information of the PDSCH through signaling, so that the terminal device can feedback according to different groups after receiving the PDSCH. If a certain group of feedback information of a terminal device fails to be transmitted due to failure of listen before talk (LBT), or the network device fails to detect the feedback information expected to be transmitted by the terminal device on the uplink feedback resource such as PUCCH, the network device The DCI can be used to trigger the terminal device to retransmit the group of feedback information.
  • the terminal device may use a codebook of the same size as the initial transmission codebook when retransmitting the feedback information, or may add new PDSCH feedback information to the retransmission codebook.
  • the feedback timing (HARQ-ACK timing) corresponding to the PDSCH can be obtained through the next DCI, where the next The DCI is the DCI that schedules other PDSCHs, and the HARQ timing indicator field indicates a numerical value, and triggers the first PDSCH group to perform feedback.
  • the network device schedules a HARQ process for transmission and indicates the corresponding uplink feedback resource for the HARQ process transmission
  • the network device does not receive an ACK or NACK on the uplink feedback resource
  • a possibility is The reason is that the terminal device does not receive the scheduling information of the HARQ process.
  • the terminal device’s LBT fails and has not obtained the right to use the feedback resource, so that it cannot transmit on the feedback resource.
  • the channel quality of the network equipment is poor, and the ACK or NACK transmitted on the uplink feedback resource cannot be detected.
  • the terminal device After receiving the scheduling information of the first HARQ process, the terminal device determines the timing of the feedback resource according to the scheduling information, and prepares to perform feedback on the feedback resource. Subsequently, the terminal device performs LBT, and if the LBT fails, the terminal device cannot send ACK or NACK on the feedback resource.
  • the terminal device has received and correctly decoded the PDSCH of the first HARQ process, but the terminal device still fails after repeatedly trying LBT and cannot send the first HARQ process.
  • Feedback information corresponding to the HARQ process the network device cannot always schedule the first HARQ process for retransmission or new transmission because it has not received the expected feedback information. This will cause the transmission efficiency to be greatly reduced.
  • This application provides a communication method, which can prevent the HARQ process from being occupied for a long time.
  • the method 300 includes at least part of the following content:
  • the terminal device receives the first PDSCH within the time unit n, the first PDSCH belongs to the first HARQ process, and the first PDSCH belongs to the first PDSCH group, and n is an integer greater than or equal to 0.
  • the network device transmits the above-mentioned first PDSCH in the time unit n.
  • the terminal device if the terminal device does not receive the scheduling information of the first HARQ process, the terminal device will not send feedback information; if the terminal device receives the scheduling information of the first HARQ process, it can determine the feedback resource before sending Feedback.
  • the DCI received by the terminal device includes a valid time domain resource allocation domain and a HARQ timing indication domain, and the two domains indicate that the time unit n+k is the time unit where the feedback resource is located, then the terminal device can determine the time unit n +k is the time unit for sending the feedback information of the first PDSCH group, and k is an integer greater than or equal to 0.
  • the terminal device using the licensed carrier can directly send feedback information within the time unit n+k, and the terminal device using the unlicensed carrier can send the feedback information within the time unit n+k after the LBT is successful.
  • the terminal device may also perform the following steps after receiving the first PDSCH.
  • S320A The terminal device does not expect to receive a second PDSCH within a preset time period after the time unit n, where the second PDSCH belongs to the first HARQ process. or,
  • the terminal device receives a second PDSCH, where the second PDSCH belongs to the first HARQ process, where the second PDSCH belongs to a second PDSCH group, and the second PDSCH group and the first PDSCH group Different; and/or, the transport block carried by the second PDSCH is different from the transport block carried by the first PDSCH.
  • the network device can perform the following steps after sending the first PDSCH.
  • S320B The network device does not send a second PDSCH within a preset time period after the time unit n, where the second PDSCH belongs to the first HARQ process. or,
  • the network device sends a second PDSCH, where the second PDSCH belongs to the first HARQ process, where the second PDSCH belongs to a second PDSCH group, and the second PDSCH group and the first PDSCH group Different; and/or, the transport block carried by the second PDSCH is different from the transport block carried by the first PDSCH.
  • the network device In the case that the network device schedules the first HARQ process for transmission and indicates the corresponding feedback resource for the first HARQ process, the network device expects to receive the terminal device to transmit on the feedback resource within a preset time period after the time unit n Feedback information.
  • the network device If the network device receives an ACK or NACK on the indicated feedback resource within the preset time period, the network device assumes that the terminal device receives the scheduling information of the first HARQ process and sends feedback on the feedback resource according to the decoding result Therefore, after receiving the feedback information sent by the terminal device on the above feedback resource, the network device can schedule the first HARQ process to perform new transmission or retransmission according to the feedback information, without waiting for the end of the preset period, thereby reducing data transmission Time delay.
  • the terminal device may expect to receive the second PDSCH belonging to the first HARQ process before the end of the preset period.
  • the network device does not receive an ACK or NACK on the indicated feedback resource within the preset time period, for example, the terminal device does not receive the scheduling information of the first HARQ process, or the terminal device using an unlicensed carrier fails to LBT, or If the terminal device successfully sends the feedback information but the network device fails to receive it, the network device can assume that the terminal device has not received the scheduling information of the first HARQ process. Therefore, the network device can reschedule the first HARQ process to perform a new update after a preset period of time. Transmission or retransmission, thereby preventing the first HARQ process from being occupied for a long time.
  • the terminal device does not expect to receive the second PDSCH belonging to the first HARQ process before the end of the preset period.
  • the aforementioned "unwanted reception” may be interpreted as: if the terminal device receives the second PDSCH belonging to the first HARQ process within a preset time period, then discarding the second PDSCH.
  • the preset time period may be a preset time starting from time unit n, or a preset time starting after time unit n, for example, a preset time starting from the end position of time unit n, or from time unit n +k preset time to start.
  • the preset time period can be the time pre-configured when the terminal device leaves the factory, the time configured by the network device through signaling, or the time determined by the terminal device itself. This application does not deal with the way the terminal device determines the preset time period. limited.
  • the terminal device determines to transmit the feedback information of the first PDSCH within the time unit n+k, the terminal device can start timing from the time unit n, or from the time unit n+k, and then check after the preset time period ends.
  • PDSCH belonging to the first HARQ process for example, the second PDSCH.
  • the duration of the preset period can be the time interval between time unit n and the time unit n+k, that is, the terminal device can be after the sending timing of the first PDSCH feedback information It is expected to receive the second PDSCH, so that while the first HARQ process is prevented from being occupied for a long time, the waste of resources caused by the discarding of the successfully decoded PDSCH can be avoided.
  • the terminal device may start timing from the time unit n.
  • the time unit n is time slot 0, and the time unit n+k is time slot 2.
  • the preset time period can be the time period starting from time slot 0 or the time period starting from time slot 2. Assuming that the time period starts from time slot 0, the preset time period can be timed from the end position of time slot 0, or from the start position of time slot 0, or from a symbol in time slot 0 (terminal equipment Receive the start symbol or end symbol of the first PDSCH) start timing; if the preset time period starts from time slot 2, the preset time period can start from the start position of time slot 2, or it can start from the end of time slot 2.
  • the position start timing can also start timing from a certain symbol in time slot 2 (the uplink feedback resource for sending feedback information from the terminal device, for example, the start symbol or the end symbol of the first PUCCH).
  • the preset time period can be the time period from the end position of time slot 0 to the end position of time slot 2; the preset time period can also be a longer time, for example, Suppose the time period is the time period from the end position of time slot 0 to the end position of time slot 4 (ie, time unit n+k+m), and time slot 4 is another time unit used to transmit feedback information of the first PDSCH group After the terminal device fails to perform the LBT in the time unit n+k, it can perform the LBT again in the time unit n+k+m, and expects to send the feedback information of the first PDSCH group within the time unit n+k+m.
  • the duration of the preset period may be greater than or equal to the interval from the time unit n to the time unit where the first feedback resource (resource for sending the feedback information of the first PDSCH) is located.
  • the terminal device If the terminal device fails the LBT within the preset time period, it can receive the second PDSCH belonging to the first HARQ process after the preset time period, and the characteristics of the second PDSCH (for example, group ID, NFI, and NDI) are not limited.
  • the network device may send the second PDSCH belonging to the first HARQ process after the preset time period.
  • the terminal device may discard the decoding result of the first PDSCH.
  • the network device may send the second PDSCH belonging to the first HARQ process after the preset time period, where the transmission carried by the second PDSCH The block is the same as the transport block carried by the first PDSCH.
  • the terminal device receives the second PDSCH after the preset time period, it is determined that the transport block in the second PDSCH is a retransmission of the transport block in the first PDSCH, and the decoding result of the first PDSCH has been obtained as ACK, Then the terminal device can determine that the decoding result of the second PDSCH is ACK.
  • the network device may also send the second PDSCH belonging to the first HARQ process before the end of the preset period, Among them, the second PDSCH needs to meet at least one of the following two conditions:
  • the second PDSCH belongs to a second PDSCH group, and the second PDSCH group is different from the first PDSCH group.
  • the transport block carried by the second PDSCH is different from the transport block carried by the first PDSCH.
  • the second PDSCH carries newly transmitted data.
  • the terminal device can determine whether the second PDSCH satisfies the above conditions through the scheduling information. If the second PDSCH satisfies the above conditions, it means that at least one feedback information of the first PDSCH sent by the terminal device has been received by the network device. Therefore, the terminal device can discard the decoding result of the first PDSCH or clear the buffer of the first PDSCH. Therefore, the above solution can prevent the first HARQ process that has successfully performed HARQ feedback from being occupied for a long time.
  • the terminal device may determine that the second PDSCH group is different from the first PDSCH group according to one of the following two conditions.
  • the group identifier of the second PDSCH group is different from the group identifier of the first PDSCH group.
  • the group identifier of the second PDSCH group is the same as the group identifier of the first PDSCH group, and the new ACK-feedback group indicator (NFI) of the second PDSCH group is different from the NFI of the first PDSCH group .
  • NFI new ACK-feedback group indicator
  • the terminal device may also determine that the second PDSCH carries the newly transmitted data according to the difference between the new data indicator (NDI) of the second PDSCH and the NDI of the first PDSCH.
  • NDI new data indicator
  • the foregoing examples are some optional implementations for the terminal device to perform S330.
  • This application does not limit the manner in which the terminal device determines that the second PDSCH group is different from the first PDSCH group and the manner in which the second PDSCH carries newly transmitted data. .
  • the network device can indicate at least one feedback resource for the first HARQ process (two feedback resources are taken as an example in Figure 4) for transmitting the first HARQ process
  • the feedback information of the first PDSCH in.
  • the first HARQ-ACK feedback resource and the second HARQ-ACK feedback resource may transmit the same PDSCH feedback information, or may transmit different PDSCH feedback information.
  • the first PDSCH group contains four PDSCHs
  • the first HARQ-ACK feedback resource can transmit the feedback information of the four PDSCHs
  • the second HARQ-ACK feedback resource can transmit six PDSCHs (including the four PDSCHs of the first PDSCH group). ) Feedback information.
  • the DCI scheduling the first HARQ process and the DCI indicating the at least one feedback resource may be the same DCI or different DCIs.
  • the terminal device may determine at least one feedback resource through DCI, or may determine at least one feedback resource through other methods, which is not limited in this application.
  • the HARQ-ACK feedback resource indicates a feedback resource used to transmit ACK or NACK, and it is not limited that the feedback resource can only transmit ACK.
  • the HARQ-ACK feedback information indicates ACK or NACK.
  • Case 1 The terminal device successfully receives the first HARQ process, or in other words, the terminal device successfully receives the scheduling information of the first HARQ process, the terminal device may prepare the feedback information of the first PDSCH in the first HARQ process. On the two HARQ-ACK feedback resources indicated by the network device, if the terminal device obtains the channel use right, the terminal device can transmit the feedback of the first PDSCH through at least one HARQ-ACK feedback resource of the two HARQ-ACK feedback resources information.
  • the network device may not need to wait for the end of the preset time period to schedule the first HARQ process to transmit the second PDSCH again, thereby reducing The data transmission delay is reduced.
  • the feedback information is ACK
  • the second PDSCH can carry newly transmitted data
  • the feedback information is NACK
  • the second PDSCH can carry retransmitted data or newly transmitted data.
  • the group identifier, NDI and NFI of the second PDSCH and the group identifier, NDI and NFI of the first PDSCH may be the same or different.
  • the network device can wait for the end of the preset period to schedule the first HARQ process to transmit the second PDSCH again, without always Waiting for the feedback information of the first PDSCH, thereby avoiding the HARQ process being occupied for a long time due to poor channel quality and other reasons.
  • the second PDSCH may carry retransmitted data or newly transmitted data, for example, retransmitted or newly transmitted transport blocks carried by the first PDSCH.
  • the group identifier, NDI and NFI of the second PDSCH and the group identifier, NDI and NFI of the first PDSCH may be the same or different.
  • Case 2 The terminal device successfully receives the first HARQ process, or in other words, the terminal device successfully receives the scheduling information of the first HARQ process, the terminal device may prepare the feedback information of the first PDSCH in the first HARQ process. On the two HARQ-ACK feedback resources indicated by the network device, if the terminal device does not obtain the channel use right, the terminal device cannot transmit feedback information through the above two HARQ-ACK feedback resources.
  • the network device cannot receive the feedback information of the terminal device through the two HARQ-ACK feedback resources, and the network device can wait for the end of the preset period to schedule the first HARQ process to transmit the second PDSCH again.
  • the second PDSCH may carry retransmitted data or newly transmitted data, for example, retransmitted or newly transmitted transport blocks carried by the first PDSCH.
  • the group identifier, NDI and NFI of the second PDSCH and the group identifier, NDI and NFI of the first PDSCH may be the same or different.
  • the terminal device can discard the first PDSCH regardless of whether the feedback information of the first PDSCH has been sent or whether the first PDSCH is successfully decoded.
  • Case 3 The terminal device does not successfully receive the first HARQ process, or in other words, the terminal device does not successfully receive the scheduling information of the first HARQ process, the terminal device will not prepare the feedback information corresponding to the first PDSCH in the first HARQ process .
  • the terminal device On the two HARQ-ACK feedback resources indicated by the network device, the terminal device will not transmit feedback information, or if the terminal device feedbacks based on the first PDSCH group on the above two HARQ-ACK feedback resources, it can report to the first
  • the feedback information corresponding to the HARQ process is NACK-occupied, that is, the position of the feedback information corresponding to the first HARQ process is filled with NACK.
  • the network device may schedule the first HARQ process to transmit the second PDSCH again after the preset time expires.
  • the second PDSCH may carry retransmitted data or newly transmitted data, for example, retransmitted or newly transmitted transport blocks carried by the first PDSCH.
  • the group identifier, NDI and NFI of the second PDSCH and the group identifier, NDI and NFI of the first PDSCH may be the same or different.
  • the network device can schedule the first HARQ process to transmit the second PDSCH again without waiting for the end of the preset time.
  • the second PDSCH may carry retransmitted data, for example, retransmit the transport block carried by the first PDSCH, so that the transmission of unsuccessful data can be started as soon as possible.
  • the group identifier, NDI and NFI of the second PDSCH and the group identifier, NDI and NFI of the first PDSCH may be the same or different.
  • the terminal device may receive at least two DCIs on the same time domain resource, and the terminal device needs The sequence of the at least two DCIs is determined so as to determine the timing of HARQ-ARK feedback resources.
  • the communication method for determining the sequence of the at least two DCIs provided in this application is introduced.
  • the method 500 includes at least part of the following content:
  • the terminal device receives the first DCI and the second DCI within a time unit n, the first DCI schedules a first PDSCH, the second DCI schedules a second PDSCH, and the first indication information in the first DCI indicates The time sequence of the uplink feedback resource corresponding to the first PDSCH, and the second indication information in the second DCI indicates that the time sequence of the uplink feedback resource corresponding to the second PDSCH is to be determined.
  • the network device transmits the above-mentioned first DCI and the second DCI within the time unit n.
  • the terminal device may receive the first DCI and the second DCI at the same PDCCH detection opportunity, or may also receive the first DCI and the second DCI on the same symbol in a carrier aggregation scenario.
  • the terminal device may perform one of the steps S520 to S540 based on different situations.
  • the network device performs S520B, that is, according to the C-DAI in the first DCI and the C-DAI in the second DCI, it is determined whether to receive the corresponding PDSCH group corresponding to the second PDSCH according to the timing of the uplink feedback resource corresponding to the first PDSCH HARQ information.
  • the first DCI schedules the first PDSCH
  • the second DCI schedules the second PDSCH.
  • the first DCI further indicates the timing of the HARQ-ACK feedback resource corresponding to the first PDSCH through a valid K1
  • the second DCI also indicates the timing of the HARQ-ACK feedback resource corresponding to the second PDSCH through an invalid K1 to be determined.
  • the C-DAI (ie C-DAI-1) in the first DCI is in the order of the C-DAI (ie, C-DAI-1) in the second DCI.
  • C-DAI-1 is equal to 0
  • C-DAI-2 is equal to 1.
  • the order of C-DAI (ie C-DAI-1) in the first DCI is in the first DCI.
  • C-DAI-1 is equal to 1
  • C-DAI-2 is equal to 0.
  • the terminal device can determine the timing of the HARQ-ACK feedback resource corresponding to the second PDSCH by detecting the third DCI, where the third DCI is used to indicate the HARQ-ACK corresponding to the second PDSCH or the PDSCH group to which the second PDSCH belongs. The timing of the ACK feedback resource.
  • the network device determines not to receive the feedback information of the PDSCH group to which the second PDSCH belongs according to the timing of the HARQ-ACK feedback resource corresponding to the first PDSCH, and the network device may send the foregoing third DCI to the terminal device.
  • the terminal device may determine that the timing of the HARQ-ACK feedback resource corresponding to the PDSCH group to which the second PDSCH belongs is the same as the timing of the HARQ-ACK feedback resource corresponding to the first PDSCH.
  • the network device determines to receive the feedback information corresponding to the PDSCH group to which the second PDSCH belongs according to the timing of the uplink feedback resource corresponding to the first PDSCH.
  • the terminal device does not expect the latter situation, in other words, when the terminal device receives the first DCI and the second DCI within the same time unit, and when the group identifier of the first PDSCH and the second PDSCH When the group identifiers are the same, the terminal device does not expect the C-DAI-1 corresponding to the first DCI indicating the timing of valid uplink feedback resources to be behind the C-DAI-2 corresponding to the second DCI indicating the timing of invalid uplink feedback resources.
  • the main reason is that if C-DAI-1 is behind C-DAI-2, the network device can directly indicate a valid K1 for the terminal device without indicating an invalid K1.
  • the terminal device and the network device can determine C-DAI-1 is located before C-DAI-2, and there is no need to determine the order of these two parameters based on the values of C-DAI-1 and C-DAI-2; subsequently, the terminal device can wait for the network device to send the third DCI.
  • S530A When the first PDSCH and the second PDSCH belong to different PDSCH groups, and when the first DCI triggers feedback of the PDSCH group to which the second PDSCH belongs, determine that the second PDSCH belongs The time sequence of the uplink feedback resource corresponding to the PDSCH group is the same as the time sequence of the uplink feedback resource corresponding to the first PDSCH.
  • the network device performs S530B, that is, determines to receive HARQ feedback information corresponding to the PDSCH group to which the second PDSCH belongs according to the timing of the uplink feedback resource corresponding to the first PDSCH.
  • the timing of the HARQ-ACK feedback resource of the group to which the first PDSCH belongs can be determined according to the timing of the uplink feedback resource of the first PDSCH (that is, the content indicated by the valid K1).
  • the timing of the HARQ-ACK feedback resource of the PDSCH group to which the second PDSCH belongs may also be determined according to the timing of the HARQ-ACK feedback resource of the first PDSCH (that is, the content indicated by the valid K1).
  • the terminal device does not expect the first DCI to trigger feedback of the PDSCH group to which the second PDSCH belongs.
  • the network device can directly indicate a valid K1 for the second DCI of the terminal device without indicating an invalid K1.
  • S540A When the first PDSCH and the second PDSCH belong to different PDSCH groups, and when the first indication information does not trigger the feedback of the PDSCH group of the second PDSCH, determine to detect the third PDSCH.
  • the third DCI is used to indicate the time sequence of the uplink feedback resource corresponding to the PDSCH group to which the second PDSCH belongs.
  • the network device executes S540B, that is, the network device sends the aforementioned third DCI.
  • the terminal device and the network device can keep the same understanding of the sequence of at least two DCIs received in the same time unit.
  • the terminal device and the network device can correspond to the first PDSCH indicated by the first DCI.
  • the HARQ-ACK feedback resource timing determines the feedback timing of the PDSCH group to which the second PDSCH belongs, or the terminal device can wait for the network device to subsequently indicate the feedback timing of the PDSCH group to which the second PDSCH belongs, thereby solving the problem of the same time domain resource How to perform HARQ-ACK feedback when at least two DCIs are received.
  • the method further includes:
  • the terminal device may send the feedback information of the second PDSCH on the HARQ-ACK feedback resource corresponding to the PDSCH group to which the second PDSCH belongs; or, if the second PDSCH does not meet the processing delay, then The terminal device may not send the feedback information of the second PDSCH on the HARQ-ACK feedback resource corresponding to the PDSCH group to which the second PDSCH belongs.
  • the foregoing satisfying processing delay can be understood as, for example, that for the period from the time unit of receiving the second PDSCH to the time unit where the HARQ-ACK feedback resource is located, the terminal device can complete the second PDSCH translation within this period of time. Code, and can generate feedback information corresponding to the second PDSCH.
  • the communication device includes hardware structures and/or software modules corresponding to each function.
  • 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-driven hardware depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.
  • the present application may divide the communication device into functional units according to the foregoing method examples.
  • each function may be divided into each functional unit, or two or more functions may be integrated into one processing unit.
  • the above-mentioned integrated unit can be implemented in the form of hardware or software functional unit. It should be noted that the division of units in this application is illustrative, and is only a logical function division, and there may be other division methods in actual implementation.
  • Fig. 7 is a schematic structural diagram of a communication device provided by the present application.
  • the apparatus 700 includes a processing unit 710 and a receiving unit 720, and the processing unit 710 can control the receiving unit 720 to perform receiving steps.
  • the receiving unit 720 is configured to: receive a first PDSCH within a time unit n, the first PDSCH belongs to a first HARQ process, and the first PDSCH belongs to a first PDSCH group, and n is an integer greater than or equal to 0 ;
  • the processing unit 710 is configured to: do not expect to receive a second PDSCH within a preset time period after the time unit n, where the second PDSCH belongs to the first HARQ process; or,
  • the receiving unit 720 is further configured to: receive a second PDSCH, the second PDSCH belonging to the first HARQ process, wherein the second PDSCH belongs to a second PDSCH group, and the second PDSCH group and all The first PDSCH group is different; and/or, the transport block carried by the second PDSCH is different from the transport block carried by the first PDSCH.
  • the difference between the second PDSCH group and the first PDSCH group includes: the group identifier of the second PDSCH group is different from the group identifier of the first PDSCH group; or, the second PDSCH group
  • the group identifier of the PDSCH group is the same as the group identifier of the first PDSCH group, and the NFI of the second PDSCH group is different from the NFI of the first PDSCH group.
  • the transport block carried by the second PDSCH is different from the transport block carried by the first PDSCH, including: the NDI of the second PDSCH is different from the NDI of the first PDSCH.
  • the processing unit 710 is further configured to: before receiving the second PDSCH, determine that the time unit n+k is the time unit for transmitting the HARQ feedback information of the first PDSCH group, and k is greater than or equal to 0 Integer.
  • the preset time period is: a preset time starting from the time unit n; or, a preset time starting from the time unit n+k.
  • the duration of the preset time period is determined according to the time interval between the time unit n and the time unit n+k; or, the duration of the preset time period is determined according to the time unit n+k
  • the time interval between the time unit n+k+m and the time unit n+k+m is determined, wherein the time unit n+k+m is later than the time unit n+k in the time domain, and the time unit n+k+m is used
  • m is an integer greater than or equal to 0.
  • the preset time period is: a preset time starting from the time unit n.
  • the receiving unit 720 is further configured to: receive a second PDSCH after the preset time period, where the second PDSCH belongs to the first HARQ process.
  • the processing unit 710 is further configured to discard the decoding result of the first PDSCH after receiving the second PDSCH.
  • Fig. 8 is a schematic structural diagram of another communication device provided by the present application.
  • the device 800 includes a processing unit 810 and a receiving unit 820, and the processing unit 810 can control the receiving unit 820 to perform receiving steps.
  • the receiving unit 820 is configured to: receive a first DCI and a second DCI within a time unit n, the first DCI schedules a first PDSCH, the second DCI schedules a second PDSCH, and the first DCI schedules a second PDSCH.
  • An indication information indicates the time sequence of the uplink feedback resource corresponding to the first PDSCH, and the second indication information in the second DCI indicates the time sequence of the uplink feedback resource corresponding to the second PDSCH to be determined;
  • the processing unit 810 is configured to: when the first PDSCH and the second PDSCH belong to the same PDSCH group, determine according to the C-DAI in the first DCI and the C-DAI in the second DCI The time sequence of the uplink feedback resource corresponding to the second PDSCH; or,
  • the processing unit 810 is configured to: when the first PDSCH and the second PDSCH belong to different PDSCH groups, and when the first DCI triggers feedback of the PDSCH group to which the second PDSCH belongs, determine The time sequence of the uplink feedback resource corresponding to the PDSCH group to which the second PDSCH belongs is the same as the time sequence of the uplink feedback resource corresponding to the first PDSCH; or,
  • the processing unit 810 is configured to: when the first PDSCH and the second PDSCH belong to different PDSCH groups, and when the first DCI does not trigger feedback of the PDSCH group to which the second PDSCH belongs, Determine to detect the third DCI, where the third DCI is used to indicate the timing of the uplink feedback resource corresponding to the PDSCH group to which the second PDSCH belongs.
  • the processing unit 810 is specifically configured to: when the C-DAI in the first DCI is located before the C-DAI in the second DCI, determine that the second PDSCH corresponds to When the C-DAI in the first DCI is located in the second DCI, the third DCI is used to indicate the timing of the uplink feedback resources corresponding to the PDSCH group to which the second PDSCH belongs; After the C-DAI in the DCI, it is determined that the time sequence of the uplink feedback resource corresponding to the second PDSCH is the same as the time sequence of the uplink feedback resource corresponding to the first PDSCH.
  • the processing unit 810 is further configured to : Determine whether to send the HARQ feedback information of the second PDSCH on the uplink feedback resource according to the processing time of the second PDSCH.
  • Fig. 9 is a schematic structural diagram of another communication device provided by the present application.
  • the device 900 includes a processing unit 910 and a sending unit 920, and the processing unit 910 can control the sending unit 920 to perform sending steps.
  • the sending unit 920 is configured to send a first PDSCH within a time unit n, the first PDSCH belongs to a first HARQ process, and the first PDSCH belongs to a first PDSCH group, and n is an integer greater than or equal to 0 ;
  • the processing unit 910 is configured to: determine not to send a second PDSCH within a preset time period after the time unit n, where the second PDSCH belongs to the first HARQ process; or,
  • the sending unit 920 is further configured to send a second PDSCH after a preset period of time after the time unit n, where the second PDSCH belongs to the first HARQ process; or,
  • the sending unit 920 is further configured to send a second PDSCH, where the second PDSCH belongs to the first HARQ process, where the second PDSCH belongs to a second PDSCH group, and the second PDSCH group is related to the The first PDSCH group is different; and/or, the transport block carried by the second PDSCH is different from the transport block carried by the first PDSCH.
  • the difference between the second PDSCH group and the first PDSCH group includes: the group identifier of the second PDSCH group is different from the group identifier of the first PDSCH group; or, the second PDSCH group
  • the group identifier of the PDSCH group is the same as the group identifier of the first PDSCH group, and the NFI of the second PDSCH group is different from the NFI of the first PDSCH group.
  • the transport block carried by the second PDSCH is different from the transport block carried by the first PDSCH, including: the NDI of the second PDSCH is different from the NDI of the first PDSCH.
  • the processing unit 910 is further configured to: before sending the second PDSCH, determine that the time unit n+k is the time unit for receiving HARQ feedback information of the first PDSCH group, and k is greater than or equal to 0 Integer.
  • the apparatus 900 further includes a receiving unit configured to receive HARQ feedback information of the first PDSCH at the time unit n+k.
  • the preset time period is: a preset time starting from the time unit n; or, a preset time starting from the time unit n+k.
  • the duration of the preset time period is determined according to the time interval between the time unit n and the time unit n+k; or, the duration of the preset time period is determined according to the time unit n+k
  • the time interval between the time unit n+k+m and the time unit n+k+m is determined, wherein the time unit n+k+m is later than the time unit n+k in the time domain, and the time unit n+k+m is used
  • m is an integer greater than or equal to 0.
  • the preset time period is: a preset time starting from the time unit n.
  • the processing unit 910 is specifically configured to: not transmit the second PDSCH within the preset time period after the time unit n, wherein the second PDSCH is not received within the preset time period HARQ feedback information of a PDSCH, the second PDSCH belongs to the first HARQ process.
  • Fig. 10 is a schematic structural diagram of another communication device provided by the present application.
  • the device 1000 includes a processing unit 1010 and a sending unit 1020, and the processing unit 1010 can control the sending unit 1020 to perform sending steps.
  • the sending unit 1020 is configured to send a first DCI and a second DCI within a time unit n, the first DCI schedules the first PDSCH, the second DCI schedules the second PDSCH, and the first DCI schedules the second PDSCH.
  • An indication information indicates the time sequence of the uplink feedback resource corresponding to the first PDSCH, and the second indication information in the second DCI indicates the time sequence of the uplink feedback resource corresponding to the second PDSCH to be determined;
  • the processing unit 1010 is configured to: when the first PDSCH and the second PDSCH belong to the same PDSCH group, determine according to the C-DAI in the first DCI and the C-DAI in the second DCI Whether to receive the HARQ feedback information corresponding to the PDSCH group to which the second PDSCH belongs according to the timing of the uplink feedback resource corresponding to the first PDSCH; or,
  • the processing unit 1010 is configured to: when the first PDSCH and the second PDSCH belong to different PDSCH groups, and when the first DCI triggers feedback of the PDSCH group to which the second PDSCH belongs, determine Receive HARQ feedback information corresponding to the PDSCH group to which the second PDSCH belongs according to the timing of the uplink feedback resource corresponding to the first PDSCH; or,
  • the processing unit 1010 is configured to: when the first PDSCH and the second PDSCH belong to different PDSCH groups, and when the first indication information does not trigger feedback of the PDSCH group to which the second PDSCH belongs , Determining to send a third DCI, where the third DCI is used to indicate the timing of the uplink feedback resource corresponding to the PDSCH group to which the second PDSCH belongs.
  • the processing unit 1010 is specifically configured to: when the C-DAI in the first DCI is located before the C-DAI in the second DCI, determine not to follow the uplink feedback corresponding to the first PDSCH The time sequence of the resource receives the HARQ feedback information corresponding to the PDSCH group to which the second PDSCH belongs; or, when the C-DAI in the first DCI is located after the C-DAI in the second DCI, it is determined according to the At the timing of the uplink feedback resource corresponding to the first PDSCH, HARQ feedback information corresponding to the PDSCH group to which the second PDSCH belongs is received.
  • the processing unit 1010 is further configured to: determine to send a third DCI, and the third DCI is used To indicate the time sequence of the uplink feedback resource corresponding to the PDSCH group to which the second PDSCH belongs.
  • Fig. 11 shows a schematic structural diagram of a communication device provided by the present application.
  • the dotted line in Figure 11 indicates that the unit or the module is optional.
  • the device 1100 may be used to implement the methods described in the foregoing method embodiments.
  • the device 1100 may be a terminal device or a network device or a chip.
  • the device 1100 includes one or more processors 1101, and the one or more processors 1101 can support the device 1100 to implement the methods in the method embodiments corresponding to FIGS. 3 to 13.
  • the processor 1101 may be a general-purpose processor or a special-purpose processor.
  • the processor 1101 may be a central processing unit (CPU).
  • the CPU can be used to control the device 1100, execute a software program, and process data of the software program.
  • the device 1100 may further include a communication unit 1105 to implement signal input (reception) and output (transmission).
  • the device 1100 may be a chip, and the communication unit 1105 may be an input and/or output circuit of the chip, or the communication unit 1105 may be a communication interface of the chip, and the chip may be used as a terminal device or a network device or other wireless communication device made of.
  • the device 1100 may be a terminal device or a network device
  • the communication unit 1105 may be a transceiver of the terminal device or the network device
  • the communication unit 1105 may be a transceiver circuit of the terminal device or the network device.
  • the device 1100 may include one or more memories 1102 with a program 1104 stored thereon.
  • the program 1104 can be run by the processor 1101 to generate instructions 1103 so that the processor 1101 executes the methods described in the foregoing method embodiments according to the instructions 1103.
  • the memory 1102 may also store data.
  • the processor 1101 may also read data stored in the memory 1102. The data may be stored at the same storage address as the program 1104, or the data may be stored at a different storage address from the program 1104.
  • the processor 1101 and the memory 1102 may be provided separately or integrated together, for example, integrated on a system-on-chip (SOC) of the terminal device.
  • SOC system-on-chip
  • the device 1100 may also include an antenna 1106.
  • the communication unit 1105 is configured to implement the transceiver function of the device 1100 through the antenna 1106.
  • each step of the foregoing method embodiment may be completed by a logic circuit in the form of hardware or instructions in the form of software in the processor 1101.
  • the processor 1101 may be a CPU, a digital signal processor (digital signal processor, DSP), an application specific integrated circuit (ASIC), a field programmable gate array (field programmable gate array, FPGA) or other programmable logic devices , For example, discrete gates, transistor logic devices, or discrete hardware components.
  • This application also provides a computer program product, which, when executed by the processor 1101, implements the method described in any method embodiment in this application.
  • the computer program product may be stored in the memory 1102, such as a program 1104.
  • the program 1104 is finally converted into an executable object file that can be executed by the processor 1101 through processing processes such as preprocessing, compilation, assembly, and linking.
  • the present application also provides a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a computer, the method described in any method embodiment in the present application is implemented.
  • the computer program can be a high-level language program or an executable target program.
  • the computer-readable storage medium is, for example, the memory 1102.
  • the memory 1102 may be a volatile memory or a non-volatile memory, or the memory 1102 may include both a volatile memory and a non-volatile memory.
  • the non-volatile memory can be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), and electrically available Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be random access memory (RAM), which is used as an external cache.
  • RAM random access memory
  • static random access memory static random access memory
  • dynamic RAM dynamic RAM
  • DRAM dynamic random access memory
  • 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 serial DRAM, SLDRAM
  • direct rambus RAM direct rambus RAM, DR RAM
  • the disclosed system, device, and method may be implemented in other ways. For example, some features of the method embodiments described above may be ignored or not implemented.
  • the device embodiments described above are merely illustrative.
  • the division of units is only a logical function division. In actual implementation, there may be other division methods, and multiple units or components may be combined or integrated into another system.
  • the coupling between the various units or the coupling between the various components may be direct coupling or indirect coupling, and the foregoing coupling includes electrical, mechanical, or other forms of connection.
  • the size of the sequence number of each process does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not correspond to the embodiments of the present application.
  • the implementation process constitutes any limitation.
  • system and “network” in this article are often used interchangeably in this article.
  • the term “and/or” in this article is only an association relationship that describes associated objects, which means that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, alone There are three cases of B.
  • the character “/" in this text generally indicates that the associated objects before and after are in an "or" relationship.

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Abstract

本申请实施例提供了一种通信方法,包括:在时间单元n内接收第一PDSCH,第一PDSCH属于第一HARQ进程,并且,第一PDSCH属于第一PDSCH组,n为大于或等于0的整数;在时间单元n之后的预设时段内不期望接收第二PDSCH,其中,第二PDSCH属于所述第一HARQ进程;或,接收第二PDSCH,第二PDSCH属于第一HARQ进程,其中,第二PDSCH属于第二PDSCH组,并且,第二PDSCH组与第一PDSCH组相异;和/或,第二PDSCH承载的传输块与第一PDSCH承载的传输块相异。基于预设时段,终端设备能够避免由于LBT失败等原因导致的HARQ进程被长时间占用。

Description

通信方法和通信装置 技术领域
本申请涉及通信领域,具体涉及一种通信方法和通信装置。
背景技术
第五代(5th generation,5G)通信系统支持动态的混合自动重传(hybrid automatic repeat request,HARQ)反馈时序。网络设备可以通过下行控制信息(downlink control information,DCI)调度终端设备接收物理下行共享信道(physical downlink shared channel,PDSCH),该DCI还可以包含物理上行控制信道(physical uplink control channel,PUCCH)的指示信息,以便于终端设备通过该PUCCH发送PDSCH的HARQ反馈信息。
当终端设备接收到属于一个HARQ进程的PDSCH之后,并且,在终端设备未发送该PDSCH的HARQ反馈信息之前,终端设备不期望接收该HARQ进程的另一个PDSCH,以避免已成功译码的PDSCH被丢弃。然而,在一些情况下,例如,在基于非授权频谱的新无线(new radio unlicensed,NR-U)场景中,终端设备可能长时间无法获得发送HARQ反馈信息的机会,从而导致HARQ进程被长时间占用。
发明内容
本申请提供了一种通信方法和通信装置,能够HARQ进程被长时间占用。
第一方面,提供了一种通信方法,包括:在时间单元n内接收第一PDSCH,所述第一PDSCH属于第一HARQ进程,并且,所述第一PDSCH属于第一PDSCH组,n为大于或等于0的整数;在所述时间单元n之后的预设时段内不期望接收第二PDSCH,其中,所述第二PDSCH属于所述第一HARQ进程;或,接收第二PDSCH,所述第二PDSCH属于所述第一HARQ进程,其中,所述第二PDSCH属于第二PDSCH组,并且,所述第二PDSCH组与所述第一PDSCH组相异;和/或,所述第二PDSCH承载的传输块与所述第一PDSCH承载的传输块相异。
第二方面,提供了另一种通信方法,包括:在时间单元n内接收第一DCI和第二DCI,所述第一DCI调度第一PDSCH,所述第二DCI调度第二PDSCH,所述第一DCI中的第一指示信息指示所述第一PDSCH对应的上行反馈资源的时序,所述第二DCI中的第二指示信息指示所述第二PDSCH对应的上行反馈资源的时序待定;当所述第一PDSCH和所述第二PDSCH属于相同的PDSCH组时,根据所述第一DCI中的计数下行分配指示C-DAI和所述第二DCI中的C-DAI确定所述第二PDSCH对应的上行反馈资源的时序;或者,当所述第一PDSCH和所述第二PDSCH属于不同的PDSCH组时,并且,当所述第一DCI触发所述第二PDSCH所属的PDSCH组的反馈时,确定所述第二PDSCH所属的PDSCH组对应的上行反馈资源的时序与所述第一PDSCH对应的上行反馈资源的时序相同;或者,当所述第一PDSCH和所述第二PDSCH属于不同的PDSCH组时,并且,当所述第一DCI不触发所述第二PDSCH所属的PDSCH组的反馈时,确定检测第三DCI,所述第三DCI用于指示所述第二PDSCH所属的PDSCH组对应的上行反馈资源的时序。
第三方面,提供了另一种通信方法,包括:在时间单元n内发送第一PDSCH,所述第一PDSCH属于第一HARQ进程,并且,所述第一PDSCH属于第一PDSCH组,n为大于或等于0的整数;在所述时间单元n之后的预设时段内不发送第二PDSCH,其中,所述第二PDSCH属于所述第一HARQ进程;或,在所述时间单元n之后的预设时段后发送第二PDSCH,其中,所述第二PDSCH属于所述第一HARQ进程;或,发送第二PDSCH,所述第二PDSCH属于所述第一HARQ进程,其中,所述第二PDSCH属于第二PDSCH组,并且,所述第二PDSCH组与所述第一PDSCH组相异;和/或,所述第二PDSCH承载的传输块与所述第一PDSCH承载的传输块相异。
第四方面,提供了另一种通信方法,包括:在时间单元n内发送第一DCI和第二DCI,所述第一DCI调度第一PDSCH,所述第二DCI调度第二PDSCH,所述第一DCI中的第一指示信息指示所述第一PDSCH对应的上行反馈资源的时序,所述第二DCI中的第二指示信息指示所述第二PDSCH对应的上行反馈资源的时序待定;当所述第一PDSCH和所述第二PDSCH属于相同的PDSCH组时,根据所述第一DCI中的计数下行分配指示C-DAI和所述第二DCI中的C-DAI确定是否根据所述第一PDSCH对应的上行反馈资源的时序接收所述第二PDSCH所属的PDSCH组对应的HARQ反馈信息;或者,当所述第一PDSCH和所述第二PDSCH属于不同的PDSCH组时,并且,当所述第一DCI触发所述第二PDSCH所属的PDSCH组的反馈时,确定根据所述第一PDSCH对应的上行反馈资源的时序接收所述第二PDSCH所属的PDSCH组对应的HARQ反馈信息;或者,当所述第一PDSCH和所述第二PDSCH属于不同的PDSCH组时,并且,当所述第一指示信息不触发所述第二PDSCH所属的 PDSCH组的反馈时,确定发送第三DCI,所述第三DCI用于指示所述第二PDSCH所属的PDSCH组对应的上行反馈资源的时序。
第五方面,提供了一种通信装置,该装置可以实现第一方面或第二方面中的方法所对应的功能,所述功能可以通过硬件实现,也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的单元或模块。
在一种可能的设计中,该装置为终端设备或芯片。该装置可以包括处理单元和收发单元。当该装置是终端设备时,该处理单元可以是处理器,该收发单元可以是收发器;该终端设备还可以包括存储单元,该存储单元可以是存储器;该存储单元用于存储指令,该处理单元执行该存储单元所存储的指令,以使该终端设备执行第一方面或第二方面所述的方法。当该装置是芯片时,该处理单元可以是处理器,该收发单元可以是输入/输出接口、管脚或电路等;该处理单元执行存储单元所存储的指令,以使包含该芯片的终端设备执行第一方面或第二方面所述的方法,该存储单元可以是该芯片内的存储单元(例如,寄存器、缓存等),也可以是位于该芯片外部的存储单元(例如,只读存储器、随机存取存储器等)。
第六方面,提供了一种通信装置,该装置可以实现第三方面或第四方面中的方法所对应的功能,所述功能可以通过硬件实现,也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的单元或模块。
在一种可能的设计中,该装置为网络设备或芯片。该装置可以包括处理单元和收发单元。当该装置是网络设备时,该处理单元可以是处理器,该收发单元可以是收发器;该网络设备还可以包括存储单元,该存储单元可以是存储器;该存储单元用于存储指令,该处理单元执行该存储单元所存储的指令,以使该网络设备执行第三方面或第四方面所述的方法。当该装置是芯片时,该处理单元可以是处理器,该收发单元可以是输入/输出接口、管脚或电路等;该处理单元执行存储单元所存储的指令,以使包含该芯片的网络设备执行第三方面或第四方面所述的方法,该存储单元可以是该芯片内的存储单元(例如,寄存器、缓存等),也可以是位于该芯片外部的存储单元(例如,只读存储器、随机存取存储器等)。
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了计算机程序,该计算机程序被处理器执行时,使得处理器执行第一方面或第二方面所述的方法。
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了计算机程序,该计算机程序被处理器执行时,使得处理器执行第三方面或第四方面所述的方法。
第九方面,提供了一种计算机程序产品,包括计算机程序代码,当该计算机程序代码被处理器运行时,使得处理器执行第一方面或第二方面所述的方法。
第十方面,提供了一种计算机程序产品,包括计算机程序代码,当该计算机程序代码被处理器运行时,使得处理器执行第三方面或第四方面所述的方法。
第十一方面,提供了一种计算机程序,当其在计算机上运行时,使得计算机执行第一方面或第二方面所述的方法。
第十二方面,提供了一种计算机程序,当其在计算机上运行时,使得计算机执行第三方面或第四方面所述的方法。
附图说明
图1是一种适用于本申请的通信系统的示意图;
图2是本申请提供的一种通信场景的示意图;
图3是本申请提供的一种通信方法的示意图;
图4是本申请提供的另一种通信场景的示意图;
图5是本申请提供的另一种通信方法的示意图;
图6是本申请提供的再一种通信场景的示意图;
图7是本申请提供的一种通信装置的示意图;
图8是本申请提供的另一种通信装置的示意图;
图9是本申请提供的再一种通信装置的示意图;
图10是本申请提供的再一种通信装置的示意图;
图11是本申请提供的一种通信设备的示意图。
具体实施方式
下面将结合本申请实施例中的附图,对本申请实施例中的技术方案进行描述,显然,所描述的实施例是本申请一部分实施例,而不是全部的实施例。基于本申请中的实施例,本领域普通技术人员在 没有做出创造性劳动前提下所获得的所有其他实施例,都属于本申请保护的范围。
本申请实施例的技术方案可以应用于各种通信系统,例如:全球移动通讯(Global System of Mobile Communication,GSM)系统、码分多址(Code Division Multiple Access,CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access,WCDMA)系统、长期演进(Long Term Evolution,LTE)系统、LTE频分双工(Frequency Division Duplex,FDD)系统、LTE时分双工(Time Division Duplex,TDD)系统、先进的长期演进(Advanced long term evolution,LTE-A)系统、新无线(New Radio,NR)系统、NR系统的演进系统、非授权频谱上的LTE(LTE-based access to unlicensed spectrum,LTE-U)系统、非授权频谱上的NR(NR-based access to unlicensed spectrum,NR-U)系统、通用移动通信系统(Universal Mobile Telecommunication System,UMTS)、无线局域网(Wireless Local Area Networks,WLAN)、无线保真(Wireless Fidelity,WiFi)、未来的6G系统或其他通信系统等。
通常来说,传统的通信系统支持的连接数有限,也易于实现,然而,随着通信技术的发展,移动通信系统将不仅支持传统的通信,还将支持例如设备到设备(Device to Device,D2D)通信、机器到机器(Machine to Machine,M2M)通信、机器类型通信(Machine Type Communication,MTC)、以及车辆间(Vehicle to Vehicle,V2V)通信等,本申请实施例也可以应用于这些通信系统。
可选地,本申请实施例中的通信系统也可以应用于载波聚合(Carrier Aggregation,CA)场景、双连接(Dual Connectivity,DC)场景、独立(Standalone,SA)布网场景等。
图1是本申请实施例应用的一种可能的无线通信系统的示意图。该无线通信系统100可以包括网络设备110。网络设备110可以为特定的地理区域提供通信覆盖,并且可以与位于该覆盖区域内的终端设备进行通信。
可选地,该网络设备100可以是GSM系统或CDMA系统中的基站(Base Transceiver Station,BTS),也可以是WCDMA系统中的基站(NodeB,NB),还可以是LTE系统中的演进型基站(Evolutional Node B,eNB或eNodeB),或者是云无线接入网络(Cloud Radio Access Network,CRAN)中的无线控制器,或者该网络设备可以为中继站、接入点、车载设备、可穿戴设备、未来网络侧设备或者未来演进的公共陆地移动网络(Public Land Mobile Network,PLMN)中的网络设备等。
该无线通信系统100还包括位于网络设备110覆盖范围内的至少一个终端设备120。
终端设备120可以是移动的或固定的。
可选地,终端设备120可以指用户设备、接入终端、用户单元、用户站、移动站、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。终端设备还可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol,SIP)电话、无线本地环路(Wireless Local Loop,WLL)站、个人数字处理(Personal Digital Assistant,PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备,未来5G网络中的终端设备或者未来演进的公用陆地移动通信网络(Public Land Mobile Network,PLMN)中的终端设备等,本申请实施例对此并不限定。其中,可选地,终端设备120之间也可以进行终端直连(Device to Device,D2D)通信。
网络设备110可以为小区提供服务,终端设备120通过该小区使用的传输资源,例如频域资源,或者说频谱资源,与网络设备110进行通信。该小区可以是网络设备110对应的小区,小区可以属于宏基站,也可以属于小小区(Small cell)对应的基站,这里的小小区可以包括:城市小区(Metro cell)、微小区(Micro cell)、微微小区(Pico cell)、毫微微小区(Femto cell)等,这些小小区具有覆盖范围小、发射功率低的特点,适用于提供高速率的数据传输服务。
图1示例性地示出了一个网络设备和两个终端设备,但本申请并不限于此。该无线通信系统100可以包括多个网络设备并且每个网络设备的覆盖范围内可以包括其它数量的终端设备。此外,该无线通信系统100还可以包括网络控制器、移动性管理实体等其他网络实体。
通信系统100仅是举例说明,适用本申请的通信系统不限于此,例如,通信系统100中包含的网络设备和终端设备的数量还可以是其它的数量。下面以通信系统100为5G通信系统为例对本申请的技术方案进行说明。为了简洁,下文中的终端设备和网络设备不再附带附图标记。
5G移动通信系统的下行数据传输支持半持续性调度(semi-persistent scheduling,SPS)PDSCH和动态调度的PDSCH。对于下行数据传输,HARQ是一种高效的传输机制。一方面,通过重传可以极大提高下行数据传输的可靠性;另一方面,网络设备根据终端设备反馈的肯定应答(acknowledgement,ACK)或否定应答(negative acknowledgement,NACK)确定是否进行重传,网络设备通常在终端设备反馈NACK时才进行重传,从而提高了数据传输效率。在本申请中,ACK或NACK统称为反馈信息,或者HARQ反馈信息,或者HARQ-ACK反馈信息。
在5G通信系统中,网络设备可以在一个时间单元内向终端设备发送多个时域重叠或时域不重叠 的PDSCH,网络设备也可以在多个载波上向终端设备发送一个或多个PDSCH,从而增加了终端设备在PUCCH上反馈ACK/NACK的复杂性。因此,终端设备在一个时间单元内的PUCCH上反馈的ACK/NACK可能对应多个时域位置或者多个载波上的PDSCH时机(occasion)。
在这里对本申请中出现的两个概念(“时间单元”和“载波”)做简要介绍。
网络设备和终端设备之间用于无线通信的时域资源可以划分为多个时间单元。并且,在本申请中,多个时间单元可以是连续的,也可以是非连续的,即,某些相邻的时间单元之间存在预设的时间间隔。
本申请对一个时间单元的长度不做限定。例如,一个时间单元可以是一个或多个子帧(subframe);或者,也可以是一个或多个时隙(slot);或者,也可以是一个或多个符号(symbol)。其中,符号也称为时域符号,时域符号可以是正交频分复用(orthogonal frequency division multiplexing,OFDM)符号,也可以是单载波频分多址(single carrier frequency division multiple access,SC-FDMA)符号。
本申请涉及的载波也可以被称为频段、成员载波(component carrier,CC)、部分带宽(bandwidth part,BWP)或小区(cell),或者,载波也可以有其它的名字。
一个载波集合可以包括一个或多个CC,也可以包括一个或多个BWP。其中,一个CC可以包含多个BWP,不同的BWP之间的子载波间隔(subcarrier spacing,SCS)可以相同或不同。
5G通信系统支持两种HARQ码本配置,HARQ码本可以被理解为:在某个上行时间单元上需要反馈的、与PDSCH对应的ACK/NACK的集合(或者说,HARQ反馈信息的集合)。HARQ码本包含2层含义:第一,HARQ码本包含哪些PDSCH的ACK/NACK;第二,这些PDSCH的ACK/NACK在码本中的排列顺序。上述两种HARQ码本包括动态码本和半静态码本。
动态码本又称为类型2(Type 2)码本。终端设备在每个物理下行控制信道(physical downlink control channel,PDCCH)监测时机(monitoring occasion)检测PDCCH,获取DCI,根据DCI中的时域资源分配(time domain resource allocation)域和HARQ时序指示(PDSCH-to-HARQ-timing-indicator)域确定该DCI调度的PDSCH对应的ACK/NACK的反馈时隙。终端设备首先根据PDCCH的时隙编号与时域资源分配域中包含的PDCCH到PDSCH的时隙偏移值(K0)确定PDSCH的时隙编号,然后根据HARQ时序指示域获取定时偏移量(K1),即PDSCH的时隙到该PDSCH对应的反馈时隙的偏移值,从而确定在哪个时隙内发送ACK/NACK。
然后,终端设备根据所有指向相同反馈时隙的PDCCH中包含的下行分配索引(downlink assignment index,DAI)信息确定该反馈时隙内的码本。例如,终端设备根据接收到的DCI格式(format)1_0或DCI格式1_1包含的DAI确定PDSCH的数量,并根据DCI格式1_0或DCI格式1_1中的时域资源分配域和HARQ时序指示域确定在时隙n发送上述PDSCH的ACK/NACK。随后,终端设备根据PDSCH的接收状态生成动态码本。其中,DCI格式1_0也可称为回退DCI,表示DCI中每个比特域存在与否、每个比特域的宽度和每种取值对应的物理层参数取值都是预定义的,不需要高层信令配置;DCI格式1_1也可称为正常DCI,正常DCI包含的比特域可以通过高层信令配置增加或删减,比特域的宽度和取值含义也可以通过高层信令配置。一般而言,回退DCI用于用户完成初始化接入之前(即没有获取高层参数时期)的下行数据调度,或者高层参数变更过程中(及高层参数模糊时期)的下行数据调度,前述“模糊时期”指的是:网络设备不确定终端设备是否收到更新后的高层参数;或者,终端设备已收到更新后的高层参数,但是,终端设备不确定“网络设备是否确定该终端设备已收到更新后的高层参数”。
DCI format 1_0和DCI format 1_1中都包含HARQ时序指示域,该域的大小一般是三比特,指示PDSCH传输时隙与对应的反馈时隙的定时偏移量K1,取值范围是“000”~“111”,具体指示的K1值可以是无线资源控制(radio resource control,RRC)信令配置的或预定义的。对于正常DCI,RRC信令从16个取值中配置8个值,分别对应“000”~“111”;对于回退DCI,预定义的8个值是1~8。
半静态码本又称类型1(Type 1)码本。网络设备通过协议预定义或高层信令为终端设备配置K1集合(K1set)和时域资源分配表格,终端设备根据时域资源分配表格确定PDSCH的候选时域位置,并根据PDSCH的候选时域位置和K1集合确定该PDSCH的反馈信息可能所在的时隙。在每个上行时隙,终端设备根据PDSCH的候选时域位置和K1集合确定该上行时隙关联的PDSCH时机集合,即关联的下行时隙和下行时隙内的PDSCH时机集合,再根据关联的PDSCH时机集合生成反馈码本。
对于授权载波而言,终端设备收到一个HARQ进程的PDSCH后,那么,在该HARQ进程对应的反馈信息传输结束之前,该终端设备不期望收到使用相同HARQ进程传输的另一个PDSCH。
当NR系统应用到非授权频段上时,可以支持独立布网,即,不依赖于授权频段上的载波提供辅助服务。在这种场景下,终端设备在非授权载波上接收到PDSCH后,需要在非授权载波上发送该PDSCH对应的反馈信息(或者说,该PDSCH对应的ACK/NACK)。
目前在非授权频段上,HARQ时序指示域除了可以指示该PDSCH对应的上行反馈资源的时域位 置,还可以指示该PDSCH对应的上行反馈资源的时域位置暂不确定。例如,预配置的HARQ时序集合中包括表示无效资源指示的取值k L,当HARQ时序指示域指示HARQ时序集合中的无效值k L,表示上述PDSCH对应的上行反馈资源的时域资源暂时无法确定。
为了灵活反馈非授权频段上的PDSCH对应的HARQ信息,网络设备可以对调度的PDSCH进行分组,并通过信令指示PDSCH的分组信息,以使终端设备在接收到PDSCH后根据不同的分组进行反馈。如果终端设备的某组反馈信息由于先听后说(listen before talk,LBT)失败而未能传输,或网络设备在上行反馈资源例如PUCCH上未能检测到期待终端设备传输的反馈信息,网络设备可以通过DCI触发终端设备进行该组反馈信息的重传。其中,终端设备在重传反馈信息时可以使用和初传码本大小相同的码本,也可以在重传码本中增加新的PDSCH的反馈信息。
若属于第一PDSCH组的PDSCH对应的HARQ时序指示域指示无效值(non-numerical value),那么该PDSCH对应的反馈时序(HARQ-ACK timing)可以通过下一个DCI获得,其中,所述下一个DCI为:调度其它PDSCH,且HARQ时序指示域指示有效值(numerical value),且触发第一PDSCH组进行反馈的DCI。
在非授权载波上,在网络设备调度一个HARQ进程传输,并为该HARQ进程传输指示了对应的上行反馈资源的情况下,如果网络设备没有在该上行反馈资源上收到ACK或NACK,一个可能的原因是终端设备没有收到该HARQ进程的调度信息,另一个可能的原因是终端设备的LBT失败,没有获得该反馈资源的使用权,从而不能在该反馈资源上传输,还有一个可能的原因是网络设备的信道质量差,没能检测出该上行反馈资源上传输的ACK或NACK。
如图2所示,终端设备收到第一HARQ进程的调度信息后,根据该调度信息确定反馈资源的时序,并准备在该反馈资源上进行反馈。随后,终端设备进行LBT,并且,LBT失败,则终端设备不能在该反馈资源上发送ACK或NACK。
如果在非授权载波上仍然沿用授权载波上的假设,那么可能会出现以下情况:终端设备已经接收并正确译码第一HARQ进程的PDSCH,但终端设备多次尝试LBT后仍然失败,无法发送第一HARQ进程对应的反馈信息;网络设备由于未接收到期望的反馈信息,始终无法调度第一HARQ进程进行重传或者新传。这样会导致传输效率大大降低。
本申请提供了一种通信方法,能够避免HARQ进程长时间被占用。
如图3所示,方法300包括以下至少部分内容:
S310,终端设备在时间单元n内接收第一PDSCH,所述第一PDSCH属于第一HARQ进程,并且,所述第一PDSCH属于第一PDSCH组,n为大于或等于0的整数。
相应地,网络设备在时间单元n内发送上述第一PDSCH。
以终端设备为例,若终端设备未接收到第一HARQ进程的调度信息,则终端设备不会发送反馈信息;若终端设备接收到第一HARQ进程的调度信息,则可以先确定反馈资源再发送反馈信息。
例如,终端设备接收到的DCI包含有效的时域资源分配域和HARQ时序指示域,并且,该两个域指示时间单元n+k为反馈资源所在的时间单元,则终端设备可以确定时间单元n+k为发送第一PDSCH组的反馈信息的时间单元,k为大于或等于0的整数。
使用授权载波的终端设备可以直接在时间单元n+k内发送反馈信息,使用非授权载波的终端设备可以在LBT成功后才能在时间单元n+k内发送反馈信息。
终端设备在收到第一PDSCH之后还可以执行下列步骤。
S320A,终端设备在所述时间单元n之后的预设时段内不期望接收第二PDSCH,其中,所述第二PDSCH属于所述第一HARQ进程。或者,
S330,终端设备接收第二PDSCH,所述第二PDSCH属于所述第一HARQ进程,其中,所述第二PDSCH属于第二PDSCH组,并且,所述第二PDSCH组与所述第一PDSCH组相异;和/或,所述第二PDSCH承载的传输块与所述第一PDSCH承载的传输块相异。
相应地,网络设备在发送第一PDSCH之后可以执行下列步骤。
S320B,网络设备在所述时间单元n之后的预设时段内不发送第二PDSCH,其中,所述第二PDSCH属于所述第一HARQ进程。或者,
S330,网络设备发送第二PDSCH,所述第二PDSCH属于所述第一HARQ进程,其中,所述第二PDSCH属于第二PDSCH组,并且,所述第二PDSCH组与所述第一PDSCH组相异;和/或,所述第二PDSCH承载的传输块与所述第一PDSCH承载的传输块相异。
在网络设备调度第一HARQ进程进行传输,并为第一HARQ进程指示了对应的反馈资源的情况下,网络设备会期望在时间单元n之后的预设时段内接收终端设备在该反馈资源上发送的反馈信息。
如果网络设备在预设时段内并且在指示的反馈资源上收到ACK或NACK,那么网络设备会假设 终端设备收到第一HARQ进程的调度信息并根据译码结果在该反馈资源上发送了反馈信息,因此,网络设备可以在上述反馈资源上接收到终端设备发送的反馈信息后,根据反馈信息调度第一HARQ进程进行新传或重传,无需等待预设时段结束,从而减小了数据传输的时延。相应地,若终端设备在预设时段结束前成功发送了第一PDSCH的反馈信息,则终端设备可以在预设时段结束前期待接收属于第一HARQ进程的第二PDSCH。
如果网络设备没有在预设时段内并且在指示的反馈资源上收到ACK或NACK,例如,终端设备没有收到第一HARQ进程的调度信息,或者,使用非授权载波的终端设备LBT失败,或者,终端设备成功发送了反馈信息但网络设备接收失败,那么网络设备可以假设终端设备没有收到第一HARQ进程的调度信息,因此,网络设备可以在预设时段之后重新调度第一HARQ进程进行新传或重传,从而避免了第一HARQ进程被长时间占用。
相应地,终端设备在预设时段结束之前不期望接收属于第一HARQ进程的第二PDSCH。
可选地,上述“不期望接收”可以被解释为:若终端设备在预设时段内接收到属于第一HARQ进程的第二PDSCH之后,则丢弃该第二PDSCH。
预设时段可以是从时间单元n开始的预设时间,也可以是从时间单元n之后开始的预设时间,例如,从时间单元n的结束位置开始的预设时间,或,从时间单元n+k开始的预设时间。
该预设时段可以是终端设备出厂时预配置的时间,也可以是网络设备通过信令配置的时间,还可以是终端设备自己确定的时间,本申请对终端设备确定预设时段的方式不做限定。
若终端设备在确定在时间单元n+k内传输第一PDSCH的反馈信息,则终端设备可以从时间单元n开始计时,也可以从时间单元n+k开始计时,待预设时段结束之后再检测属于第一HARQ进程的PDSCH(例如,第二PDSCH)。其中,若终端设备从时间n开始计时,则预设时段的时长可以是时间单元n与所述时间单元n+k的时间间隔,即,终端设备可以在第一PDSCH的反馈信息的发送时机之后期待接收第二PDSCH,从而可以在避免第一HARQ进程被长时间占用的同时,避免已成功译码的PDSCH被丢弃导致的资源浪费。
若终端设备不确定传输第一PDSCH的反馈信息的时序,则终端设备可以从时间单元n开始计时。
例如,时间单元n为时隙0,时间单元n+k为时隙2,预设时段可以是从时隙0开始计时的时段,也可以是从时隙2开始计时的时段,其中,若预设时段从时隙0开始计时,则预设时段可以从时隙0的结束位置开始计时,也可以从时隙0的起始位置开始计时,还可以从时隙0中某个符号(终端设备接收第一PDSCH的起始符号或结束符号)开始计时;若预设时段从时隙2开始计时,则预设时段可以从时隙2的起始位置开始计时,也可以从时隙2的结束位置开始计时,还可以从时隙2中的某个符号(终端设备发送反馈信息的上行反馈资源例如第一PUCCH的起始符号或结束符号)开始计时。
若终端设备从时隙0的结束位置开始计时,则预设时段可以是从时隙0的结束位置到时隙2的结束位置的时段;预设时段也可以是更长的时间,例如,预设时段是从时隙0的结束位置到时隙4(即,时间单元n+k+m)的结束位置的时段,时隙4是用于传输第一PDSCH组的反馈信息的另一个时间单元,终端设备在时间单元n+k进行LBT失败后,可以在时间单元n+k+m再次进行LBT,期望在时间单元n+k+m内将第一PDSCH组的反馈信息发送出去。在本申请中,预设时段的时长可以大于或等于从时间单元n到第一个反馈资源(发送第一PDSCH的反馈信息的资源)所在的时间单元的间隔。
若终端设备在预设时段内LBT失败,则可以在预设时段后接收属于第一HARQ进程的第二PDSCH,该第二PDSCH的特征(例如,组标识、NFI和NDI)不受限制。
相应地,若网络设备在预设时段内未收到第一PDSCH的反馈信息,则网络设备可以在预设时段之后发送属于第一HARQ进程的第二PDSCH。
可选地,若终端设备在预设时段后接收到第二PDSCH,可以丢弃第一PDSCH的译码结果,或者清除第一PDSCH的缓存。此外,即使第一PDSCH的译码结果还未反馈,终端设备也可以丢弃第一PDSCH的译码结果。
可选地,若网络设备在预设时段内未收到第一PDSCH的反馈信息,则网络设备可以在预设时段之后发送属于第一HARQ进程的第二PDSCH,其中,第二PDSCH承载的传输块与第一PDSCH承载的传输块相同。相应地,若终端设备在预设时段后接收到第二PDSCH,确定第二PDSCH中的传输块是第一PDSCH中的传输块的重传,且已获得第一PDSCH的译码结果为ACK,那么终端设备可以确定第二PDSCH的译码结果为ACK。
如果终端设备在预设时段结束前向网络设备发送了至少一次属于第一HARQ进程的第一PDSCH的反馈信息,网络设备也可以在预设时段结束之前发送属于第一HARQ进程的第二PDSCH,其中,第二PDSCH需要满足以下两个条件中的至少一个:
条件1,所述第二PDSCH属于第二PDSCH组,并且,所述第二PDSCH组与所述第一PDSCH 组相异。
条件2,所述第二PDSCH承载的传输块与所述第一PDSCH承载的传输块相异。例如,第二PDSCH承载了新传数据。
终端设备可以通过调度信息确定第二PDSCH是否满足上述条件。若第二PDSCH满足上述条件,说明终端设备发送的至少一次第一PDSCH的反馈信息被网络设备接收,因此终端设备可以丢弃第一PDSCH的译码结果,或者清除第一PDSCH的缓存。因此,上述方案能够避免已成功进行HARQ反馈的第一HARQ进程被长时间占用。
终端设备可以根据以下两种条件中的一种确定第二PDSCH组与第一PDSCH组相异。
条件3,第二PDSCH组的组标识与第一PDSCH组的组标识相异。
条件4,第二PDSCH组的组标识与第一PDSCH组的组标识相同,并且,第二PDSCH组的新反馈组指示(new ACK-feedback group indicator,NFI)与第一PDSCH组的NFI相异。
此外,终端设备还可以根据第二PDSCH的新数据指示(new data indicator,NDI)与第一PDSCH的NDI相异确定第二PDSCH承载新传数据。
上述几个示例是终端设备执行S330的一些可选的实施方式,本申请对终端设备确定第二PDSCH组与第一PDSCH组相异的方式以及确定第二PDSCH承载新传数据的方式不做限定。
下面,再结合图4介绍几个本申请提供的通信方法。
如图4所示,网络设备在调度第一HARQ进程传输第一PDSCH后,可以为第一HARQ进程指示至少一个反馈资源(图4中以两个反馈资源为例)用于传输第一HARQ进程中的第一PDSCH的反馈信息。其中,第一HARQ-ACK反馈资源与第二HARQ-ACK反馈资源可以传输相同的PDSCH的反馈信息,也可以传输不同的PDSCH的反馈信息。例如,第一PDSCH组包含四个PDSCH,第一HARQ-ACK反馈资源可以传输该四个PDSCH的反馈信息,第二HARQ-ACK反馈资源可以传输六个PDSCH(包含第一PDSCH组的四个PDSCH)的反馈信息。
应理解,调度第一HARQ进程的DCI和指示至少一个反馈资源的DCI可以是相同的DCI,也可以是不同的DCI。终端设备可以通过DCI确定至少一个反馈资源,也可以通过别的方式确定至少一个反馈资源,本申请对此并不限定。此外,HARQ-ACK反馈资源表示用于传输ACK或NACK的反馈资源,并非限定该反馈资源仅能传输ACK,类似地,HARQ-ACK反馈信息表示ACK或NACK。
对终端设备和网络设备来说,可以存在以下几种情况。
情况1:终端设备成功接收到第一HARQ进程,或者说,终端设备成功接收到第一HARQ进程的调度信息,则终端设备可以准备第一HARQ进程中的第一PDSCH的反馈信息。在网络设备指示的两个HARQ-ACK反馈资源上,若终端设备获得信道使用权,该终端设备可以通过该两个HARQ-ACK反馈资源中的至少一个HARQ-ACK反馈资源传输第一PDSCH的反馈信息。
若网络设备在预设时段内通过图4中的HARQ-ACK反馈资源接收到终端设备发送的反馈信息,那么网络设备可以无需等待预设时段结束再次调度第一HARQ进程传输第二PDSCH,从而减小了数据传输时延。其中,若反馈信息为ACK,则第二PDSCH可以承载新传数据;若反馈信息为NACK,则第二PDSCH可以承载重传数据或新传数据。第二PDSCH的组标识、NDI和NFI和第一PDSCH的组标识、NDI和NFI可以相同,也可以不同。
若网络设备在预设时段内未接收到终端设备发送的反馈信息(原因可能是信道质量差等),那么网络设备可以等待预设时段结束后再次调度第一HARQ进程传输第二PDSCH,无需一直等待第一PDSCH的反馈信息,从而避免了信道质量差等原因导致HARQ进程被长时间占用。其中,第二PDSCH可以承载重传数据或新传数据,例如,重传或者新传第一PDSCH承载的传输块。第二PDSCH的组标识、NDI和NFI和第一PDSCH的组标识、NDI和NFI可以相同,也可以不同。
情况2:终端设备成功接收到第一HARQ进程,或者说,终端设备成功接收到第一HARQ进程的调度信息,则终端设备可以准备第一HARQ进程中的第一PDSCH的反馈信息。在网络设备指示的两个HARQ-ACK反馈资源上,若终端设备未获得信道使用权,该终端设备不能通过上述两个HARQ-ACK反馈资源传输反馈信息。
相应地,网络设备也不能通过该两个HARQ-ACK反馈资源接收终端设备的反馈信息,那么网络设备可以等待预设时段结束后可以再次调度第一HARQ进程传输第二PDSCH。其中,第二PDSCH可以承载重传数据或新传数据,例如,重传或者新传第一PDSCH承载的传输块。第二PDSCH的组标识、NDI和NFI和第一PDSCH的组标识、NDI和NFI可以相同,也可以不同。
若终端设备成功接收到第二PDSCH的调度信息,则无论第一PDSCH的反馈信息是否已被发送,也无论第一PDSCH是否成功译码,终端设备可以丢弃第一PDSCH。
通过上述方式,可以避免HARQ进程因为信道拥塞等原因被长时间占用。
情况3:终端设备没有成功接收到第一HARQ进程,或者说,终端设备没有成功接收到第一HARQ进程的调度信息,则终端设备不会准备第一HARQ进程中的第一PDSCH对应的反馈信息。在网络设备指示的两个HARQ-ACK反馈资源上,终端设备不会传输反馈信息,或者,若终端设备在上述两个HARQ-ACK反馈资源上基于第一PDSCH组进行反馈时,可以对第一HARQ进程对应的反馈信息进行NACK占位,即,使用NACK填充第一HARQ进程对应的反馈信息的位置。
若网络设备没有通过上述两个HARQ-ACK反馈资源接收到第一HARQ进程的反馈信息,那么在预设时间结束后,网络设备可以再次调度第一HARQ进程传输第二PDSCH。其中,第二PDSCH可以承载重传数据或新传数据,例如,重传或者新传第一PDSCH承载的传输块。第二PDSCH的组标识、NDI和NFI和第一PDSCH的组标识、NDI和NFI可以相同,也可以不同。
通过该方式,可以避免第一HARQ进程由于终端设备侧的调度授权信息丢失等原因被长时间占用。
若网络设备通过上述两个HARQ-ACK反馈资源接收到终端设备发送的NACK,那么,无论该NACK表示终端设备未成功译码第一PDSCH还是表示终端设备未收到第一PDSCH的调度信息,网络设备无需等待预设时间结束即可再次调度第一HARQ进程传输第二PDSCH。其中,第二PDSCH可以承载重传数据,例如,重传第一PDSCH承载的传输块,从而可以尽快开始传输未成功传输的数据。
第二PDSCH的组标识、NDI和NFI和第一PDSCH的组标识、NDI和NFI可以相同,也可以不同。
上文介绍本申请提供的基于预设时间进行反馈的通信方法的一些示例。在基于预设时间进行HARQ-ARK反馈的场景中,或者,在一些其它基于HARQ-ARK反馈的通信场景中,终端设备可能会在相同的时域资源上收到至少两个DCI,终端设备需要确定该至少两个DCI的顺序以便于确定HARQ-ARK反馈资源的时序。下面,介绍本申请提供的确定该至少两个DCI的顺序的通信方法。
如图5所示,方法500包括以下至少部分内容:
S510,终端设备在时间单元n内接收第一DCI和第二DCI,所述第一DCI调度第一PDSCH,所述第二DCI调度第二PDSCH,所述第一DCI中的第一指示信息指示所述第一PDSCH对应的上行反馈资源的时序,所述第二DCI中的第二指示信息指示所述第二PDSCH对应的上行反馈资源的时序待定。
相应地,网络设备在时间单元n内发送上述第一DCI和第二DCI。
终端设备可能在同一个PDCCH检测机会收到第一DCI和第二DCI,或者,也可能在载波聚合场景中的同一个符号上收到第一DCI和第二DCI。
随后,终端设备可以基于不同的情况执行S520至S540中的一个步骤。
S520A,当第一PDSCH和第二PDSCH属于相同的PDSCH组时,终端设备根据所述第一DCI中的计数下行分配指示(counter DAI,C-DAI)和所述第二DCI中的C-DAI确定所述第二PDSCH对应的上行反馈资源的时序。
相应地,网络设备执行S520B,即,根据第一DCI中的C-DAI和第二DCI中的C-DAI确定是否根据第一PDSCH对应的上行反馈资源的时序接收第二PDSCH所属的PDSCH组对应的HARQ信息。
下面结合图6对上述方案进行说明。如图6所示。第一DCI调度第一PDSCH,第二DCI调度第二PDSCH。可选地,第一DCI还通过有效的K1指示第一PDSCH对应的HARQ-ACK反馈资源的时序,第二DCI还通过无效的K1指示第二PDSCH对应的HARQ-ACK反馈资源的时序待定。
当第一PDSCH的组标识和第二PDSCH的组标识相同时,一种情况是:第一DCI中的C-DAI(即C-DAI-1)顺序在第二DCI中的C-DAI(即C-DAI-2)之前,例如C-DAI-1等于0,C-DAI-2等于1;另一种情况是:第一DCI中的C-DAI(即C-DAI-1)顺序在第二DCI中的C-DAI(即C-DAI-2)之后,例如C-DAI-1等于1,C-DAI-2等于0。
可选地,对于前一种情况,C-DAI-1位于C-DAI-2之前,因此,可以认为第一DCI排序位于第二DCI之前,第一DCI无法指示第二PDSCH对应的HARQ-ACK反馈资源的时序,终端设备可以通过检测第三DCI确定第二PDSCH对应的HARQ-ACK反馈资源的时序,其中,第三DCI用于指示第二PDSCH或第二PDSCH所属的PDSCH组对应的HARQ-ACK反馈资源的时序。相应地,网络设备确定不根据第一PDSCH对应的HARQ-ACK反馈资源的时序接收所述第二PDSCH所属的PDSCH组的反馈信息,网络设备可以向终端设备发送上述第三DCI。
可选地,对于后一种情况,C-DAI-1位于C-DAI-2之后,因此,可以认为第一DCI排序位于第二DCI之后,第一DCI可以指示第二PDSCH对应的HARQ-ACK反馈资源的时序,终端设备可以确定第二PDSCH所属的PDSCH组对应的HARQ-ACK反馈资源的时序与第一PDSCH对应的HARQ-ACK 反馈资源的时序相同。相应地,网络设备确定根据第一PDSCH对应的上行反馈资源的时序接收第二PDSCH所属的PDSCH组对应的反馈信息。
可选地,终端设备不期望出现后一种情况,或者说,当终端设备在同一个时间单元内接收到第一DCI和第二DCI时,并且,当第一PDSCH的组标识和第二PDSCH的组标识相同时,终端设备不期望指示有效上行反馈资源时序的第一DCI对应的C-DAI-1位于指示无效上行反馈资源时序的第二DCI对应的C-DAI-2之后。主要原因是,若C-DAI-1位于C-DAI-2之后,则网络设备可以直接为该终端设备指示一个有效的K1,无需指示一个无效的K1。
可选地,当终端设备在同一个时间单元内接收到第一DCI和第二DCI时,并且,当第一PDSCH的组标识和第二PDSCH的组标识相同时,终端设备和网络设备可以确定C-DAI-1位于C-DAI-2之前,无需基于C-DAI-1和C-DAI-2的值确定这两个参数的先后顺序;随后,终端设备可以等待网络设备发送第三DCI。
S530A,当所述第一PDSCH和所述第二PDSCH属于不同的PDSCH组时,并且,当所述第一DCI触发所述第二PDSCH所属的PDSCH组的反馈时,确定所述第二PDSCH所属的PDSCH组对应的上行反馈资源的时序与所述第一PDSCH对应的上行反馈资源的时序相同。
相应地,网络设备执行S530B,即,确定根据所述第一PDSCH对应的上行反馈资源的时序接收所述第二PDSCH所属的PDSCH组对应的HARQ反馈信息。
第一PDSCH所属组的HARQ-ACK反馈资源的时序可以根据第一PDSCH的上行反馈资源的时序(即有效的K1指示的内容)确定的,当第一DCI触发第二PDSCH所属的PDSCH组的反馈时,第二PDSCH所属的PDSCH组的HARQ-ACK反馈资源的时序也可以根据第一PDSCH的HARQ-ACK反馈资源的时序(即有效的K1指示的内容)确定。
可选地,当所述第一PDSCH和所述第二PDSCH属于不同的PDSCH组时,终端设备不期望所述第一DCI触发所述第二PDSCH所属的PDSCH组的反馈。主要原因是,在这种情况下,网络设备可以直接为该终端设备的第二DCI指示一个有效的K1,无需指示一个无效的K1。
S540A,当所述第一PDSCH和所述第二PDSCH属于不同的PDSCH组时,并且,当所述第一指示信息不触发所述第二PDSCH所述的PDSCH组的反馈时,确定检测第三DCI,所述第三DCI用于指示所述第二PDSCH所属的PDSCH组对应的上行反馈资源的时序。
相应地,网络设备执行S540B,即,网络设备发送上述第三DCI。
通过上述几个步骤,终端设备和网络设备能够对在同一个时间单元内收到的至少两个DCI的先后顺序的理解保持一致,终端设备和网络设备可以根据第一DCI指示的第一PDSCH对应的HARQ-ACK反馈资源的时序确定第二PDSCH所属的PDSCH组的反馈时序,或者,终端设备可以等待网络设备后续指示第二PDSCH所属的PDSCH组的反馈时序,从而解决了相同的时域资源上收到至少两个DCI的情况下如何进行HARQ-ACK反馈的问题。
可选地,在确定所述第二PDSCH对应的上行反馈资源的时序之后,或者,在确定所述第二PDSCH所属的PDSCH组对应的上行反馈资源的时序之后,还包括:
根据所述第二PDSCH的处理时间确定是否在所述第二PDSCH对应的上行反馈资源上发送反馈信息。
若第二PDSCH满足处理时延,则终端设备可以在第二PDSCH所属的PDSCH组对应的HARQ-ACK反馈资源上发送第二PDSCH的反馈信息;或,若第二PDSCH不满足处理时延,则终端设备可以不在第二PDSCH所属的PDSCH组对应的HARQ-ACK反馈资源上发送第二PDSCH的反馈信息。
上述满足处理时延,例如可以被理解为:对于从接收第二PDSCH的时间单元到上述HARQ-ACK反馈资源所在的时间单元之间的时段,终端设备在该时段内能够完成第二PDSCH的译码,并且,能够生成第二PDSCH对应的反馈信息。
上文详细介绍了本申请提供的通信方法的示例。可以理解的是,通信装置为了实现上述功能,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很容易意识到,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。
本申请可以根据上述方法示例对通信装置进行功能单元的划分,例如,可以将各个功能划分为各个功能单元,也可以将两个或两个以上的功能集成在一个处理单元中。上述集成的单元既可以采用硬件的形式实现,也可以采用软件功能单元的形式实现。需要说明的是,本申请中对单元的划分是示意 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。
图7是本申请提供的一种通信装置的结构示意图。该装置700包括处理单元710和接收单元720,处理单元710可以控制接收单元720执行接收步骤。
所述接收单元720用于:在时间单元n内接收第一PDSCH,所述第一PDSCH属于第一HARQ进程,并且,所述第一PDSCH属于第一PDSCH组,n为大于或等于0的整数;
所述处理单元710用于:在所述时间单元n之后的预设时段内不期望接收第二PDSCH,其中,所述第二PDSCH属于所述第一HARQ进程;或,
所述接收单元720还用于:接收第二PDSCH,所述第二PDSCH属于所述第一HARQ进程,其中,所述第二PDSCH属于第二PDSCH组,并且,所述第二PDSCH组与所述第一PDSCH组相异;和/或,所述第二PDSCH承载的传输块与所述第一PDSCH承载的传输块相异。
可选地,所述第二PDSCH组与所述第一PDSCH组相异,包括:所述第二PDSCH组的组标识与所述第一PDSCH组的组标识相异;或者,所述第二PDSCH组的组标识与所述第一PDSCH组的组标识相同,并且,所述第二PDSCH组的NFI与所述第一PDSCH组的NFI相异。
可选地,所述第二PDSCH承载的传输块与所述第一PDSCH承载的传输块相异,包括:所述第二PDSCH的NDI与所述第一PDSCH的NDI相异。
可选地,所述处理单元710还用于:在接收所述第二PDSCH之前,确定时间单元n+k为发送所述第一PDSCH组的HARQ反馈信息的时间单元,k为大于或等于0的整数。
可选地,所述预设时段为:从所述时间单元n开始的预设时间;或者,从所述时间单元n+k开始的预设时间。
可选地,所述预设时段的时长是根据所述时间单元n与所述时间单元n+k的时间间隔确定的;或者,所述预设时段的时长是根据所述时间单元n+k与时间单元n+k+m的时间间隔确定的,其中,所述时间单元n+k+m在时域上晚于所述时间单元n+k,所述时间单元n+k+m为用于发送所述第一PDSCH组的HARQ反馈信息的时间单元,m为大于或等于0的整数。
可选地,所述预设时段为:从所述时间单元n开始的预设时间。
可选地,所述接收单元720还用于:在所述预设时段后接收第二PDSCH,其中,所述第二PDSCH属于所述第一HARQ进程。
可选地,所述处理单元710还用于:在接收到所述第二PDSCH后,丢弃所述第一PDSCH的译码结果。
装置700执行通信方法的具体方式以及产生的有益效果可以参见方法实施例中的相关描述。
图8是本申请提供的另一种通信装置的结构示意图。该装置800包括处理单元810和接收单元820,处理单元810可以控制接收单元820执行接收步骤。
所述接收单元820用于:在时间单元n内接收第一DCI和第二DCI,所述第一DCI调度第一PDSCH,所述第二DCI调度第二PDSCH,所述第一DCI中的第一指示信息指示所述第一PDSCH对应的上行反馈资源的时序,所述第二DCI中的第二指示信息指示所述第二PDSCH对应的上行反馈资源的时序待定;
所述处理单元810用于:当所述第一PDSCH和所述第二PDSCH属于相同的PDSCH组时,根据所述第一DCI中的C-DAI和所述第二DCI中的C-DAI确定所述第二PDSCH对应的上行反馈资源的时序;或者,
所述处理单元810用于:当所述第一PDSCH和所述第二PDSCH属于不同的PDSCH组时,并且,当所述第一DCI触发所述第二PDSCH所属的PDSCH组的反馈时,确定所述第二PDSCH所属的PDSCH组对应的上行反馈资源的时序与所述第一PDSCH对应的上行反馈资源的时序相同;或者,
所述处理单元810用于:当所述第一PDSCH和所述第二PDSCH属于不同的PDSCH组时,并且,当所述第一DCI不触发所述第二PDSCH所属的PDSCH组的反馈时,确定检测第三DCI,所述第三DCI用于指示所述第二PDSCH所属的PDSCH组对应的上行反馈资源的时序。
可选地,所述处理单元810具体用于:当所述第一DCI中的C-DAI位于所述第二DCI中的C-DAI之前时,通过检测第三DCI确定所述第二PDSCH对应的上行反馈资源的时序,所述第三DCI用于指示所述第二PDSCH所属的PDSCH组对应的上行反馈资源的时序;或者,当所述第一DCI中的C-DAI位于所述第二DCI中的C-DAI之后时,确定根据所述第二PDSCH对应的上行反馈资源的时序与所述第一PDSCH对应的上行反馈资源的时序相同。
可选地,在确定所述第二PDSCH对应的上行反馈资源的时序之后,或者,在确定所述第二PDSCH所属的PDSCH组对应的上行反馈资源的时序之后,所述处理单元810还用于:根据所述第二PDSCH的处理时间确定是否在所述上行反馈资源上发送所述第二PDSCH的HARQ反馈信息。
装置800执行通信方法的具体方式以及产生的有益效果可以参见方法实施例中的相关描述。
图9是本申请提供的再一种通信装置的结构示意图。该装置900包括处理单元910和发送单元920,处理单元910可以控制发送单元920执行发送步骤。
所述发送单元920用于:在时间单元n内发送第一PDSCH,所述第一PDSCH属于第一HARQ进程,并且,所述第一PDSCH属于第一PDSCH组,n为大于或等于0的整数;
所述处理单元910用于:确定在所述时间单元n之后的预设时段内不发送第二PDSCH,其中,所述第二PDSCH属于所述第一HARQ进程;或,
所述发送单元920还用于:在所述时间单元n之后的预设时段后发送第二PDSCH,其中,所述第二PDSCH属于所述第一HARQ进程;或,
所述发送单元920还用于:发送第二PDSCH,所述第二PDSCH属于所述第一HARQ进程,其中,所述第二PDSCH属于第二PDSCH组,并且,所述第二PDSCH组与所述第一PDSCH组相异;和/或,所述第二PDSCH承载的传输块与所述第一PDSCH承载的传输块相异。
可选地,所述第二PDSCH组与所述第一PDSCH组相异,包括:所述第二PDSCH组的组标识与所述第一PDSCH组的组标识相异;或者,所述第二PDSCH组的组标识与所述第一PDSCH组的组标识相同,并且,所述第二PDSCH组的NFI与所述第一PDSCH组的NFI相异。
可选地,所述第二PDSCH承载的传输块与所述第一PDSCH承载的传输块相异,包括:所述第二PDSCH的NDI与所述第一PDSCH的NDI相异。
可选地,所述处理单元910还用于:在发送所述第二PDSCH之前,确定时间单元n+k为接收所述第一PDSCH组的HARQ反馈信息的时间单元,k为大于或等于0的整数。
可选地,装置900还包括接收单元,所述接收单元用于:在所述时间单元n+k上接收到所述第一PDSCH的HARQ反馈信息。
可选地,所述预设时段为:从所述时间单元n开始的预设时间;或者,从所述时间单元n+k开始的预设时间。
可选地,所述预设时段的时长是根据所述时间单元n与所述时间单元n+k的时间间隔确定的;或者,所述预设时段的时长是根据所述时间单元n+k与时间单元n+k+m的时间间隔确定的,其中,所述时间单元n+k+m在时域上晚于所述时间单元n+k,所述时间单元n+k+m为用于发送所述第一PDSCH组的HARQ反馈信息的时间单元,m为大于或等于0的整数。
可选地,所述预设时段为:从所述时间单元n开始的预设时间。
可选地,所述处理单元910具体用于:在所述时间单元n之后的所述预设时段内不发送所述第二PDSCH,其中,在所述预设时段内没有接收到所述第一PDSCH的HARQ反馈信息,所述第二PDSCH属于所述第一HARQ进程。
装置900执行通信方法的具体方式以及产生的有益效果可以参见方法实施例中的相关描述。
图10是本申请提供的再一种通信装置的结构示意图。该装置1000包括处理单元1010和发送单元1020,处理单元1010可以控制发送单元1020执行发送步骤。
所述发送单元1020用于:在时间单元n内发送第一DCI和第二DCI,所述第一DCI调度第一PDSCH,所述第二DCI调度第二PDSCH,所述第一DCI中的第一指示信息指示所述第一PDSCH对应的上行反馈资源的时序,所述第二DCI中的第二指示信息指示所述第二PDSCH对应的上行反馈资源的时序待定;
所述处理单元1010用于:当所述第一PDSCH和所述第二PDSCH属于相同的PDSCH组时,根据所述第一DCI中的C-DAI和所述第二DCI中的C-DAI确定是否根据所述第一PDSCH对应的上行反馈资源的时序接收所述第二PDSCH所属的PDSCH组对应的HARQ反馈信息;或者,
所述处理单元1010用于:当所述第一PDSCH和所述第二PDSCH属于不同的PDSCH组时,并且,当所述第一DCI触发所述第二PDSCH所属的PDSCH组的反馈时,确定根据所述第一PDSCH对应的上行反馈资源的时序接收所述第二PDSCH所属的PDSCH组对应的HARQ反馈信息;或者,
所述处理单元1010用于:当所述第一PDSCH和所述第二PDSCH属于不同的PDSCH组时,并且,当所述第一指示信息不触发所述第二PDSCH所属的PDSCH组的反馈时,确定发送第三DCI,所述第三DCI用于指示所述第二PDSCH所属的PDSCH组对应的上行反馈资源的时序。
可选地,所述处理单元1010具体用于:当所述第一DCI中的C-DAI位于所述第二DCI中的C-DAI之前时,确定不根据所述第一PDSCH对应的上行反馈资源的时序接收所述第二PDSCH所属的PDSCH组对应的HARQ反馈信息;或者,当所述第一DCI中的C-DAI位于所述第二DCI中的C-DAI之后时,确定根据所述第一PDSCH对应的上行反馈资源的时序接收所述第二PDSCH所属的PDSCH组对应的HARQ反馈信息。
可选地,当所述第一DCI中的C-DAI位于所述第二DCI中的C-DAI之前时,所述处理单元1010还用于:确定发送第三DCI,所述第三DCI用于指示所述第二PDSCH所属的PDSCH组对应的上行反馈资源的时序。
装置1000执行通信方法的具体方式以及产生的有益效果可以参见方法实施例中的相关描述。
图11示出了本申请提供的一种通信设备的结构示意图。图11中的虚线表示该单元或该模块为可选的。设备1100可用于实现上述方法实施例中描述的方法。设备1100可以是终端设备或网络设备或芯片。
设备1100包括一个或多个处理器1101,该一个或多个处理器1101可支持设备1100实现图3至图13所对应方法实施例中的方法。处理器1101可以是通用处理器或者专用处理器。例如,处理器1101可以是中央处理器(central processing unit,CPU)。CPU可以用于对设备1100进行控制,执行软件程序,处理软件程序的数据。设备1100还可以包括通信单元1105,用以实现信号的输入(接收)和输出(发送)。
例如,设备1100可以是芯片,通信单元1105可以是该芯片的输入和/或输出电路,或者,通信单元1105可以是该芯片的通信接口,该芯片可以作为终端设备或网络设备或其它无线通信设备的组成部分。
又例如,设备1100可以是终端设备或网络设备,通信单元1105可以是该终端设备或该网络设备的收发器,或者,通信单元1105可以是该终端设备或该网络设备的收发电路。
设备1100中可以包括一个或多个存储器1102,其上存有程序1104,程序1104可被处理器1101运行,生成指令1103,使得处理器1101根据指令1103执行上述方法实施例中描述的方法。可选地,存储器1102中还可以存储有数据。可选地,处理器1101还可以读取存储器1102中存储的数据,该数据可以与程序1104存储在相同的存储地址,该数据也可以与程序1104存储在不同的存储地址。
处理器1101和存储器1102可以单独设置,也可以集成在一起,例如,集成在终端设备的系统级芯片(system on chip,SOC)上。
设备1100还可以包括天线1106。通信单元1105用于通过天线1106实现设备1100的收发功能。
处理器1101执行通信方法的具体方式以及产生的有益效果可以参见方法实施例中的相关描述。
应理解,上述方法实施例的各步骤可以通过处理器1101中的硬件形式的逻辑电路或者软件形式的指令完成。处理器1101可以是CPU、数字信号处理器(digital signal processor,DSP)、专用集成电路(application specific integrated circuit,ASIC)、现场可编程门阵列(field programmable gate array,FPGA)或者其它可编程逻辑器件,例如,分立门、晶体管逻辑器件或分立硬件组件。
本申请还提供了一种计算机程序产品,该计算机程序产品被处理器1101执行时实现本申请中任一方法实施例所述的方法。
该计算机程序产品可以存储在存储器1102中,例如是程序1104,程序1104经过预处理、编译、汇编和链接等处理过程最终被转换为能够被处理器1101执行的可执行目标文件。
本申请还提供了一种计算机可读存储介质,其上存储有计算机程序,该计算机程序被计算机执行时实现本申请中任一方法实施例所述的方法。该计算机程序可以是高级语言程序,也可以是可执行目标程序。
该计算机可读存储介质例如是存储器1102。存储器1102可以是易失性存储器或非易失性存储器,或者,存储器1102可以同时包括易失性存储器和非易失性存储器。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),其用作外部高速缓存。通过示例性但不是限制性说明,许多形式的RAM可用,例如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)。
本领域的技术人员可以清楚地了解到,为了描述的方便和简洁,上述描述的装置和设备的具体工作过程以及产生的技术效果,可以参考前述方法实施例中对应的过程和技术效果,在此不再赘述。
在本申请所提供的几个实施例中,所揭露的系统、装置和方法,可以通过其它的方式实现。例如,以上所描述的方法实施例的一些特征可以忽略,或不执行。以上所描述的装置实施例仅仅是示意性的,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,多个单元或组件可以结合或者可以集成到另一个系统。另外,各单元之间的耦合或各个组件之间的耦合可以是直接耦合,也 可以是间接耦合,上述耦合包括电的、机械的或其它形式的连接。
应理解,在本申请的各种实施例中,各过程的序号的大小并不意味着执行顺序的先后,各过程的执行顺序应以其功能和内在逻辑确定,而不应对本申请的实施例的实施过程构成任何限定。
另外,本文中术语“系统”和“网络”在本文中常被可互换使用。本文中的术语“和/或”,仅仅是一种描述关联对象的关联关系,表示可以存在三种关系,例如,A和/或B,可以表示:单独存在A,同时存在A和B,单独存在B这三种情况。另外,本文中字符“/”,一般表示前后关联对象是一种“或”的关系。
总之,以上所述仅为本申请技术方案的较佳实施例而已,并非用于限定本申请的保护范围。凡在本申请的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本申请的保护范围之内。

Claims (54)

  1. 一种通信方法,其特征在于,包括:
    在时间单元n内接收第一物理下行共享信道PDSCH,所述第一PDSCH属于第一混合自动重传HARQ进程,并且,所述第一PDSCH属于第一PDSCH组,n为大于或等于0的整数;
    在所述时间单元n之后的预设时段内不期望接收第二PDSCH,其中,所述第二PDSCH属于所述第一HARQ进程;或,
    接收第二PDSCH,所述第二PDSCH属于所述第一HARQ进程,其中,所述第二PDSCH属于第二PDSCH组,并且,所述第二PDSCH组与所述第一PDSCH组相异;和/或,所述第二PDSCH承载的传输块与所述第一PDSCH承载的传输块相异。
  2. 根据权利要求1所述的方法,其特征在于,所述第二PDSCH组与所述第一PDSCH组相异,包括:
    所述第二PDSCH组的组标识与所述第一PDSCH组的组标识相异;或者,
    所述第二PDSCH组的组标识与所述第一PDSCH组的组标识相同,并且,所述第二PDSCH组的新反馈组指示NFI与所述第一PDSCH组的NFI相异。
  3. 根据权利要求1或2所述的方法,其特征在于,所述第二PDSCH承载的传输块与所述第一PDSCH承载的传输块相异,包括:
    所述第二PDSCH的新数据指示NDI与所述第一PDSCH的NDI相异。
  4. 根据权利要求1至3中任一项所述的方法,其特征在于,还包括:
    在接收所述第二PDSCH之前,确定时间单元n+k为发送所述第一PDSCH组的HARQ反馈信息的时间单元,k为大于或等于0的整数。
  5. 根据权利要求4所述的方法,其特征在于,所述预设时段为:
    从所述时间单元n开始的预设时间;或者,
    从所述时间单元n+k开始的预设时间。
  6. 根据权利要求4或5所述的方法,其特征在于,
    所述预设时段的时长是根据所述时间单元n与所述时间单元n+k的时间间隔确定的;或者,
    所述预设时段的时长是根据所述时间单元n+k与时间单元n+k+m的时间间隔确定的,其中,所述时间单元n+k+m在时域上晚于所述时间单元n+k,所述时间单元n+k+m为用于发送所述第一PDSCH组的HARQ反馈信息的时间单元,m为大于或等于0的整数。
  7. 根据权利要求1至3中任一项所述的方法,其特征在于,所述预设时段为:
    从所述时间单元n开始的预设时间。
  8. 根据权利要求1至7中任一项所述的方法,其特征在于,还包括:
    在所述预设时段后接收第二PDSCH,其中,所述第二PDSCH属于所述第一HARQ进程。
  9. 根据权利要求8所述的方法,其特征在于,还包括:
    在接收到所述第二PDSCH后,丢弃所述第一PDSCH的译码结果。
  10. 一种通信方法,其特征在于,包括:
    在时间单元n内接收第一下行控制信息DCI和第二DCI,所述第一DCI调度第一物理下行共享信道PDSCH,所述第二DCI调度第二PDSCH,所述第一DCI中的第一指示信息指示所述第一PDSCH对应的上行反馈资源的时序,所述第二DCI中的第二指示信息指示所述第二PDSCH对应的上行反馈资源的时序待定;
    当所述第一PDSCH和所述第二PDSCH属于相同的PDSCH组时,根据所述第一DCI中的计数下行分配指示C-DAI和所述第二DCI中的C-DAI确定所述第二PDSCH对应的上行反馈资源的时序;或者,
    当所述第一PDSCH和所述第二PDSCH属于不同的PDSCH组时,并且,当所述第一DCI触发所述第二PDSCH所属的PDSCH组的反馈时,确定所述第二PDSCH所属的PDSCH组对应的上行反馈资源的时序与所述第一PDSCH对应的上行反馈资源的时序相同;或者,
    当所述第一PDSCH和所述第二PDSCH属于不同的PDSCH组时,并且,当所述第一DCI不触发所述第二PDSCH所属的PDSCH组的反馈时,确定检测第三DCI,所述第三DCI用于指示所述第二PDSCH所属的PDSCH组对应的上行反馈资源的时序。
  11. 根据权利要求10所述的方法,其特征在于,所述根据所述第一DCI中的计数下行分配指示C-DAI和所述第二DCI中的C-DAI确定所述第二PDSCH对应的上行反馈资源的时序,包括:
    当所述第一DCI中的C-DAI位于所述第二DCI中的C-DAI之前时,通过检测第三DCI确定所述第二PDSCH对应的上行反馈资源的时序,所述第三DCI用于指示所述第二PDSCH所属的PDSCH 组对应的上行反馈资源的时序;或者,
    当所述第一DCI中的C-DAI位于所述第二DCI中的C-DAI之后时,确定根据所述第二PDSCH对应的上行反馈资源的时序与所述第一PDSCH对应的上行反馈资源的时序相同。
  12. 根据权利要求10或11所述的方法,其特征在于,在确定所述第二PDSCH对应的上行反馈资源的时序之后,或者,在确定所述第二PDSCH所属的PDSCH组对应的上行反馈资源的时序之后,还包括:
    根据所述第二PDSCH的处理时间确定是否在所述上行反馈资源上发送所述第二PDSCH的HARQ反馈信息。
  13. 一种通信方法,其特征在于,包括:
    在时间单元n内发送第一物理下行共享信道PDSCH,所述第一PDSCH属于第一混合自动重传HARQ进程,并且,所述第一PDSCH属于第一PDSCH组,n为大于或等于0的整数;
    在所述时间单元n之后的预设时段内不发送第二PDSCH,其中,所述第二PDSCH属于所述第一HARQ进程;或,
    在所述时间单元n之后的预设时段后发送第二PDSCH,其中,所述第二PDSCH属于所述第一HARQ进程;或,
    发送第二PDSCH,所述第二PDSCH属于所述第一HARQ进程,其中,所述第二PDSCH属于第二PDSCH组,并且,所述第二PDSCH组与所述第一PDSCH组相异;和/或,所述第二PDSCH承载的传输块与所述第一PDSCH承载的传输块相异。
  14. 根据权利要求13所述的方法,其特征在于,所述第二PDSCH组与所述第一PDSCH组相异,包括:
    所述第二PDSCH组的组标识与所述第一PDSCH组的组标识相异;或者,
    所述第二PDSCH组的组标识与所述第一PDSCH组的组标识相同,并且,所述第二PDSCH组的新反馈组指示NFI与所述第一PDSCH组的NFI相异。
  15. 根据权利要求13所述的方法,其特征在于,所述第二PDSCH承载的传输块与所述第一PDSCH承载的传输块相异,包括:
    所述第二PDSCH的新数据指示NDI与所述第一PDSCH的NDI相异。
  16. 根据权利要求13至15中任一项所述的方法,其特征在于,还包括:
    在发送所述第二PDSCH之前,确定时间单元n+k为接收所述第一PDSCH组的HARQ反馈信息的时间单元,k为大于或等于0的整数。
  17. 根据权利要求16所述的方法,其特征在于,还包括:
    在所述时间单元n+k上接收到所述第一PDSCH的HARQ反馈信息。
  18. 根据权利要求16或17所述的方法,其特征在于,所述预设时段为:
    从所述时间单元n开始的预设时间;或者,
    从所述时间单元n+k开始的预设时间。
  19. 根据权利要求16至18中任一项所述的方法,其特征在于,
    所述预设时段的时长是根据所述时间单元n与所述时间单元n+k的时间间隔确定的;或者,
    所述预设时段的时长是根据所述时间单元n+k与时间单元n+k+m的时间间隔确定的,其中,所述时间单元n+k+m在时域上晚于所述时间单元n+k,所述时间单元n+k+m为用于发送所述第一PDSCH组的HARQ反馈信息的时间单元,m为大于或等于0的整数。
  20. 根据权利要求13至15中任一项所述的方法,其特征在于,所述预设时段为:
    从所述时间单元n开始的预设时间。
  21. 根据权利要求20所述的方法,其特征在于,所述在所述时间单元n之后的预设时段内不发送第二PDSCH,包括:
    在所述时间单元n之后的所述预设时段内不发送所述第二PDSCH,其中,在所述预设时段内没有接收到所述第一PDSCH的HARQ反馈信息,所述第二PDSCH属于所述第一HARQ进程。
  22. 一种通信方法,其特征在于,包括:
    在时间单元n内发送第一下行控制信息DCI和第二DCI,所述第一DCI调度第一物理下行共享信道PDSCH,所述第二DCI调度第二PDSCH,所述第一DCI中的第一指示信息指示所述第一PDSCH对应的上行反馈资源的时序,所述第二DCI中的第二指示信息指示所述第二PDSCH对应的上行反馈资源的时序待定;
    当所述第一PDSCH和所述第二PDSCH属于相同的PDSCH组时,根据所述第一DCI中的计数下行分配指示C-DAI和所述第二DCI中的C-DAI确定是否根据所述第一PDSCH对应的上行反馈资 源的时序接收所述第二PDSCH所属的PDSCH组对应的HARQ反馈信息;或者,
    当所述第一PDSCH和所述第二PDSCH属于不同的PDSCH组时,并且,当所述第一DCI触发所述第二PDSCH所属的PDSCH组的反馈时,确定根据所述第一PDSCH对应的上行反馈资源的时序接收所述第二PDSCH所属的PDSCH组对应的HARQ反馈信息;或者,
    当所述第一PDSCH和所述第二PDSCH属于不同的PDSCH组时,并且,当所述第一指示信息不触发所述第二PDSCH所属的PDSCH组的反馈时,确定发送第三DCI,所述第三DCI用于指示所述第二PDSCH所属的PDSCH组对应的上行反馈资源的时序。
  23. 根据权利要求22所述的方法,其特征在于,所述根据所述第一DCI中的计数下行分配指示C-DAI和所述第二DCI中的C-DAI确定是否根据所述第一PDSCH对应的上行反馈资源的时序接收所述第二PDSCH所属的PDSCH组对应的HARQ反馈信息,包括:
    当所述第一DCI中的C-DAI位于所述第二DCI中的C-DAI之前时,确定不根据所述第一PDSCH对应的上行反馈资源的时序接收所述第二PDSCH所属的PDSCH组对应的HARQ反馈信息;或者,
    当所述第一DCI中的C-DAI位于所述第二DCI中的C-DAI之后时,确定根据所述第一PDSCH对应的上行反馈资源的时序接收所述第二PDSCH所属的PDSCH组对应的HARQ反馈信息。
  24. 根据权利要求23所述的方法,其特征在于,当所述第一DCI中的C-DAI位于所述第二DCI中的C-DAI之前时,还包括:
    确定发送第三DCI,所述第三DCI用于指示所述第二PDSCH所属的PDSCH组对应的上行反馈资源的时序。
  25. 一种通信装置,其特征在于,包括接收单元和处理单元,
    所述接收单元用于:在时间单元n内接收第一物理下行共享信道PDSCH,所述第一PDSCH属于第一混合自动重传HARQ进程,并且,所述第一PDSCH属于第一PDSCH组,n为大于或等于0的整数;
    所述处理单元用于:在所述时间单元n之后的预设时段内不期望接收第二PDSCH,其中,所述第二PDSCH属于所述第一HARQ进程;或,
    所述接收单元还用于:接收第二PDSCH,所述第二PDSCH属于所述第一HARQ进程,其中,所述第二PDSCH属于第二PDSCH组,并且,所述第二PDSCH组与所述第一PDSCH组相异;和/或,所述第二PDSCH承载的传输块与所述第一PDSCH承载的传输块相异。
  26. 根据权利要求25所述的装置,其特征在于,所述第二PDSCH组与所述第一PDSCH组相异,包括:
    所述第二PDSCH组的组标识与所述第一PDSCH组的组标识相异;或者,
    所述第二PDSCH组的组标识与所述第一PDSCH组的组标识相同,并且,所述第二PDSCH组的新反馈组指示NFI与所述第一PDSCH组的NFI相异。
  27. 根据权利要求25或26所述的装置,其特征在于,所述第二PDSCH承载的传输块与所述第一PDSCH承载的传输块相异,包括:
    所述第二PDSCH的新数据指示NDI与所述第一PDSCH的NDI相异。
  28. 根据权利要求25至27中任一项所述的装置,其特征在于,所述处理单元还用于:
    在接收所述第二PDSCH之前,确定时间单元n+k为发送所述第一PDSCH组的HARQ反馈信息的时间单元,k为大于或等于0的整数。
  29. 根据权利要求28所述的装置,其特征在于,所述预设时段为:
    从所述时间单元n开始的预设时间;或者,
    从所述时间单元n+k开始的预设时间。
  30. 根据权利要求28或29所述的装置,其特征在于,
    所述预设时段的时长是根据所述时间单元n与所述时间单元n+k的时间间隔确定的;或者,
    所述预设时段的时长是根据所述时间单元n+k与时间单元n+k+m的时间间隔确定的,其中,所述时间单元n+k+m在时域上晚于所述时间单元n+k,所述时间单元n+k+m为用于发送所述第一PDSCH组的HARQ反馈信息的时间单元,m为大于或等于0的整数。
  31. 根据权利要求25至27中任一项所述的装置,其特征在于,所述预设时段为:
    从所述时间单元n开始的预设时间。
  32. 根据权利要求25至31中任一项所述的装置,其特征在于,所述接收单元还用于:
    在所述预设时段后接收第二PDSCH,其中,所述第二PDSCH属于所述第一HARQ进程。
  33. 根据权利要求32所述的装置,其特征在于,所述处理单元还用于:
    在接收到所述第二PDSCH后,丢弃所述第一PDSCH的译码结果。
  34. 一种通信装置,其特征在于,包括接收单元和处理单元,
    所述接收单元用于:在时间单元n内接收第一下行控制信息DCI和第二DCI,所述第一DCI调度第一物理下行共享信道PDSCH,所述第二DCI调度第二PDSCH,所述第一DCI中的第一指示信息指示所述第一PDSCH对应的上行反馈资源的时序,所述第二DCI中的第二指示信息指示所述第二PDSCH对应的上行反馈资源的时序待定;
    所述处理单元用于:当所述第一PDSCH和所述第二PDSCH属于相同的PDSCH组时,根据所述第一DCI中的计数下行分配指示C-DAI和所述第二DCI中的C-DAI确定所述第二PDSCH对应的上行反馈资源的时序;或者,
    所述处理单元用于:当所述第一PDSCH和所述第二PDSCH属于不同的PDSCH组时,并且,当所述第一DCI触发所述第二PDSCH所属的PDSCH组的反馈时,确定所述第二PDSCH所属的PDSCH组对应的上行反馈资源的时序与所述第一PDSCH对应的上行反馈资源的时序相同;或者,
    所述处理单元用于:当所述第一PDSCH和所述第二PDSCH属于不同的PDSCH组时,并且,当所述第一DCI不触发所述第二PDSCH所属的PDSCH组的反馈时,确定检测第三DCI,所述第三DCI用于指示所述第二PDSCH所属的PDSCH组对应的上行反馈资源的时序。
  35. 根据权利要求34所述的装置,其特征在于,所述处理单元具体用于:
    当所述第一DCI中的C-DAI位于所述第二DCI中的C-DAI之前时,通过检测第三DCI确定所述第二PDSCH对应的上行反馈资源的时序,所述第三DCI用于指示所述第二PDSCH所属的PDSCH组对应的上行反馈资源的时序;或者,
    当所述第一DCI中的C-DAI位于所述第二DCI中的C-DAI之后时,确定根据所述第二PDSCH对应的上行反馈资源的时序与所述第一PDSCH对应的上行反馈资源的时序相同。
  36. 根据权利要求34或35所述的装置,其特征在于,在确定所述第二PDSCH对应的上行反馈资源的时序之后,或者,在确定所述第二PDSCH所属的PDSCH组对应的上行反馈资源的时序之后,所述处理单元还用于:
    根据所述第二PDSCH的处理时间确定是否在所述上行反馈资源上发送所述第二PDSCH的HARQ反馈信息。
  37. 一种通信装置,其特征在于,包括发送单元和处理单元,
    所述发送单元用于:在时间单元n内发送第一物理下行共享信道PDSCH,所述第一PDSCH属于第一混合自动重传HARQ进程,并且,所述第一PDSCH属于第一PDSCH组,n为大于或等于0的整数;
    所述处理单元用于:确定在所述时间单元n之后的预设时段内不发送第二PDSCH,其中,所述第二PDSCH属于所述第一HARQ进程;或,
    所述发送单元还用于:在所述时间单元n之后的预设时段后发送第二PDSCH,其中,所述第二PDSCH属于所述第一HARQ进程;或,
    所述发送单元还用于:发送第二PDSCH,所述第二PDSCH属于所述第一HARQ进程,其中,所述第二PDSCH属于第二PDSCH组,并且,所述第二PDSCH组与所述第一PDSCH组相异;和/或,所述第二PDSCH承载的传输块与所述第一PDSCH承载的传输块相异。
  38. 根据权利要求37所述的装置,其特征在于,所述第二PDSCH组与所述第一PDSCH组相异,包括:
    所述第二PDSCH组的组标识与所述第一PDSCH组的组标识相异;或者,
    所述第二PDSCH组的组标识与所述第一PDSCH组的组标识相同,并且,所述第二PDSCH组的新反馈组指示NFI与所述第一PDSCH组的NFI相异。
  39. 根据权利要求37所述的装置,其特征在于,所述第二PDSCH承载的传输块与所述第一PDSCH承载的传输块相异,包括:
    所述第二PDSCH的新数据指示NDI与所述第一PDSCH的NDI相异。
  40. 根据权利要求37至39中任一项所述的装置,其特征在于,所述处理单元还用于:
    在发送所述第二PDSCH之前,确定时间单元n+k为接收所述第一PDSCH组的HARQ反馈信息的时间单元,k为大于或等于0的整数。
  41. 根据权利要求40所述的装置,其特征在于,还包括接收单元,所述接收单元用于:
    在所述时间单元n+k上接收到所述第一PDSCH的HARQ反馈信息。
  42. 根据权利要求40或41所述的装置,其特征在于,所述预设时段为:
    从所述时间单元n开始的预设时间;或者,
    从所述时间单元n+k开始的预设时间。
  43. 根据权利要求40至42中任一项所述的装置,其特征在于,
    所述预设时段的时长是根据所述时间单元n与所述时间单元n+k的时间间隔确定的;或者,
    所述预设时段的时长是根据所述时间单元n+k与时间单元n+k+m的时间间隔确定的,其中,所述时间单元n+k+m在时域上晚于所述时间单元n+k,所述时间单元n+k+m为用于发送所述第一PDSCH组的HARQ反馈信息的时间单元,m为大于或等于0的整数。
  44. 根据权利要求37至39中任一项所述的装置,其特征在于,所述预设时段为:
    从所述时间单元n开始的预设时间。
  45. 根据权利要求44所述的装置,其特征在于,所述处理单元具体用于:
    在所述时间单元n之后的所述预设时段内不发送所述第二PDSCH,其中,在所述预设时段内没有接收到所述第一PDSCH的HARQ反馈信息,所述第二PDSCH属于所述第一HARQ进程。
  46. 一种通信装置,其特征在于,包括发送单元和处理单元,
    所述发送单元用于:在时间单元n内发送第一下行控制信息DCI和第二DCI,所述第一DCI调度第一物理下行共享信道PDSCH,所述第二DCI调度第二PDSCH,所述第一DCI中的第一指示信息指示所述第一PDSCH对应的上行反馈资源的时序,所述第二DCI中的第二指示信息指示所述第二PDSCH对应的上行反馈资源的时序待定;
    所述处理单元用于:当所述第一PDSCH和所述第二PDSCH属于相同的PDSCH组时,根据所述第一DCI中的计数下行分配指示C-DAI和所述第二DCI中的C-DAI确定是否根据所述第一PDSCH对应的上行反馈资源的时序接收所述第二PDSCH所属的PDSCH组对应的HARQ反馈信息;或者,
    所述处理单元用于:当所述第一PDSCH和所述第二PDSCH属于不同的PDSCH组时,并且,当所述第一DCI触发所述第二PDSCH所属的PDSCH组的反馈时,确定根据所述第一PDSCH对应的上行反馈资源的时序接收所述第二PDSCH所属的PDSCH组对应的HARQ反馈信息;或者,
    所述处理单元用于:当所述第一PDSCH和所述第二PDSCH属于不同的PDSCH组时,并且,当所述第一指示信息不触发所述第二PDSCH所属的PDSCH组的反馈时,确定发送第三DCI,所述第三DCI用于指示所述第二PDSCH所属的PDSCH组对应的上行反馈资源的时序。
  47. 根据权利要求46所述的装置,其特征在于,所述处理单元具体用于:
    当所述第一DCI中的C-DAI位于所述第二DCI中的C-DAI之前时,确定不根据所述第一PDSCH对应的上行反馈资源的时序接收所述第二PDSCH所属的PDSCH组对应的HARQ反馈信息;或者,
    当所述第一DCI中的C-DAI位于所述第二DCI中的C-DAI之后时,确定根据所述第一PDSCH对应的上行反馈资源的时序接收所述第二PDSCH所属的PDSCH组对应的HARQ反馈信息。
  48. 根据权利要求47所述的装置,其特征在于,当所述第一DCI中的C-DAI位于所述第二DCI中的C-DAI之前时,所述处理单元还用于:
    确定发送第三DCI,所述第三DCI用于指示所述第二PDSCH所属的PDSCH组对应的上行反馈资源的时序。
  49. 一种终端设备,其特征在于,包括:处理器和存储器,所述存储器用于存储计算机程序,所述处理器用于调用并运行所述存储器中存储的计算机程序,执行如权利要求1至12中任一项所述的方法。
  50. 一种网络设备,其特征在于,包括:处理器和存储器,所述存储器用于存储计算机程序,所述处理器用于调用并运行所述存储器中存储的计算机程序,执行如权利要求13至24中任一项所述的方法。
  51. 一种芯片,其特征在于,包括:处理器,用于从存储器中调用并运行计算机程序,使得安装有所述芯片的设备执行:如权利要求1至12中任一项所述的方法,或者,如权利要求13至24中任一项所述的方法。
  52. 一种计算机可读存储介质,其特征在于,用于存储计算机程序,所述计算机程序使得计算机执行:如权利要求1至12中任一项所述的方法,或者,如权利要求13至24中任一项所述的方法。
  53. 一种计算机程序产品,其特征在于,包括计算机程序指令,该计算机程序指令使得计算机执行:如权利要求1至12中任一项所述的方法,或者,如权利要求13至24中任一项所述的方法。
  54. 一种计算机程序,其特征在于,所述计算机程序使得计算机执行:如权利要求1中12中任一项所述的方法,或者,如权利要求13至24中任一项所述的方法。
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