WO2021238941A1 - Procédé de retour d'accusé de réception de demande de répétition automatique hybride, dispositif terminal et dispositif de réseau - Google Patents

Procédé de retour d'accusé de réception de demande de répétition automatique hybride, dispositif terminal et dispositif de réseau Download PDF

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WO2021238941A1
WO2021238941A1 PCT/CN2021/095885 CN2021095885W WO2021238941A1 WO 2021238941 A1 WO2021238941 A1 WO 2021238941A1 CN 2021095885 W CN2021095885 W CN 2021095885W WO 2021238941 A1 WO2021238941 A1 WO 2021238941A1
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pdsch
harq
multicast
target
ack feedback
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PCT/CN2021/095885
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English (en)
Chinese (zh)
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李娜
潘学明
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维沃移动通信有限公司
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements 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
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements 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
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0055—Physical resource allocation for ACK/NACK
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0057—Physical resource allocation for CQI

Definitions

  • This application relates to the field of communications, and in particular to a HARQ-ACK feedback method, terminal equipment and network equipment.
  • the user equipment In the mobile communication system, the user equipment (User Equipment, UE, also called terminal equipment, etc.) needs to transmit the physical downlink shared channel (Physical Downlink Shared Channel, PDSCH) or some physical downlink control channels (Physical Downlink Control Channel) for downlink transmission. , PDCCH) for Hybrid Automatic Repeat Request Acknowledgement (HARQ-ACK) feedback, wherein the HARQ-ACK feedback is on the Physical Uplink Control Channel (PUCCH) or the Physical Uplink Shared Channel (Physical Uplink). Shared Channel, PUSCH).
  • PUCCH Physical Uplink Control Channel
  • PUSCH Physical Uplink Shared Channel
  • the purpose of the embodiments of the present application is to provide a HARQ-ACK feedback method, terminal equipment and network equipment, so as to be able to solve the problem that the multicast PDSCH does not support HARQ-ACK feedback.
  • an embodiment of the present application provides a HARQ-ACK feedback method, which is applied to a terminal device, and the method includes:
  • HARQ-ACK feedback is performed on the target multicast PDSCH or the PDSCH in the target PDSCH group; wherein, the PDSCH in the target PDSCH group includes the multicast PDSCH.
  • an embodiment of the present application provides a terminal device, and the terminal device includes:
  • the feedback module is used to perform HARQ-ACK feedback on the target multicast PDSCH or the PDSCH in the target PDSCH group according to the unicast DCI instruction; wherein, the PDSCH in the target PDSCH group includes the multicast PDSCH.
  • an embodiment of the present application provides a terminal device, including a memory, a processor, and a program or instruction stored on the memory and capable of running on the processor, and the program or instruction is processed by the processor.
  • the steps of the method described in the first aspect are implemented when the device is executed.
  • an embodiment of the present application provides a readable storage medium storing a program or instruction on the readable storage medium, and when the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented.
  • an embodiment of the present application provides a HARQ-ACK feedback method, which is applied to a network device, and the method includes:
  • an embodiment of the present application provides a network device, and the network device includes:
  • the sending module is configured to send unicast DCI to a terminal device, where the unicast DCI is used to instruct the terminal device to give HARQ-ACK feedback of a target multicast PDSCH or a PDSCH in a target PDSCH group; wherein, the target PDSCH group
  • the PDSCH in includes multicast PDSCH.
  • an embodiment of the present application provides a network device, including: a memory, a processor, and a program or instruction that is stored on the memory and can run on the processor, and the program or instruction is processed by the processor.
  • the steps of the method described in the fifth aspect are implemented when the device is executed.
  • an embodiment of the present application provides a readable storage medium with a program or instruction stored on the readable storage medium, and when the program or instruction is executed by a processor, the steps of the method described in the fifth aspect are implemented .
  • HARQ-ACK feedback can be performed on the target multicast PDSCH or the PDSCH in the target PDSCH group containing the multicast PDSCH according to the unicast DCI instruction issued by the network device, so as to realize the multicast PDSCH HARQ-ACK feedback support.
  • the multicast PDSCH of different multicast terminal devices can be made to perform HARQ-ACK feedback at different times and resources to use different transmission powers, improve the effectiveness of the communication system, and reduce the multicast HARQ of a certain time unit. -ACK feedback load.
  • FIG. 1 is a schematic flowchart of a HARQ-ACK feedback method in an embodiment of the present application
  • Figure 2 is a schematic diagram of a HARQ-ACK feedback process in an embodiment of the present application
  • Fig. 3 is a schematic diagram of another HARQ-ACK feedback process in an embodiment of the present application.
  • FIG. 4 is a schematic diagram of another HARQ-ACK feedback process in an embodiment of the present application.
  • FIG. 5 is a schematic flowchart of a second HARQ-ACK feedback method in an embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of a terminal device in an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of a network device in an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a second type of terminal device in an embodiment of the present application.
  • Fig. 9 is a schematic structural diagram of a second type of network device in an embodiment of the present application.
  • GSM Global System of Mobile Communications
  • CDMA Code Division Multiple Access
  • GSM Wideband Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE-A Long Term Evolution Advanced
  • NR NR
  • User-side UE can also be called terminal equipment (Mobile Terminal), mobile user equipment, etc., and can communicate with one or more core networks via a radio access network (RAN), and user equipment can be terminal equipment.
  • RAN radio access network
  • user equipment can be terminal equipment.
  • they can be portable, pocket-sized, handheld, computer-built or vehicle-mounted mobile devices, which exchange languages and/or wireless access networks. Or data.
  • Network equipment also called a base station
  • BTS Base Transceiver Station
  • NodeB base station
  • evolved Node B evolved Node B
  • LTE Long Term Evolution
  • ENB e-NodeB
  • gNB 5G base station
  • an embodiment of the present application provides a HARQ-ACK feedback method, which is executed by a terminal device, and the method includes the following process steps:
  • Step 101 Perform HARQ-ACK feedback on the target multicast PDSCH or the PDSCH in the target PDSCH group according to the indication of the unicast DCI; wherein, the PDSCH in the target PDSCH group includes the multicast PDSCH.
  • HARQ-ACK feedback can be performed on the target multicast PDSCH or the PDSCH in the target PDSCH group containing the multicast PDSCH according to the unicast DCI instruction issued by the network device, so as to realize the multicast PDSCH HARQ-ACK feedback support.
  • the multicast PDSCH of different multicast terminal devices can be made to perform HARQ-ACK feedback at different times and resources to use different transmission powers, improve the effectiveness of the communication system, and reduce the multicast HARQ of a certain time unit. -ACK feedback load.
  • step 101 of the HARQ-ACK feedback method in the embodiment of the present application the following content may also be included:
  • the PDSCH is grouped to obtain one or more PDSCH groups, the one or more PDSCH groups include at least one first PDSCH group, and the PDSCH in the first PDSCH group includes a multicast PDSCH; wherein, the target multicast The PDSCH is included in the at least one first PDSCH group, or the target PDSCH group includes the at least one first PDSCH group.
  • the PDSCH can be grouped to accurately determine the PDSCH group in which the multicast PDSCH is located. In this way, when HARQ-ACK feedback is performed on at least one PDSCH in the first PDSCH group containing the multicast PDSCH according to the instruction of the unicast DCI, the HARQ-ACK for the target multicast PDSCH or the PDSCH in the target PDSCH group can be realized. Feedback.
  • the above step of grouping PDSCHs to obtain one or more PDSCH groups can be specifically executed as one of the following contents:
  • the PDSCH is grouped to obtain the one or more PDSCH groups.
  • the PDSCH is grouped according to the radio network temporary identifier RNTI corresponding to the DCI to obtain the one or more PDSCH groups; wherein the DCI is used to schedule the PDSCH.
  • the RNTI corresponding to the PDSCH that is, the RNTI that scrambles the PDSCH, or the RNTI that corresponds to the DCI, that is, the RNTI that scrambles the DCI (such as DCI with X-RNTI or DCI with CRC scrambled by X).
  • -RNTI divide the PDSCH into different groups.
  • the cell radio network temporary identification (Cell RNTI, C-RNTI), modulation and coding scheme cell radio network temporary identification (Modulation and coding scheme Cell RNTI, MCS-C-RNIT) or configuration scheduling wireless network temporary identification
  • the PDSCH scrambled by unicast RNTI (Configured Scheduling RNTI, CS-RNTI) is a group, such as group 0; the PDSCH scrambled by g-RNTI (groupRNTI) is a group, such as group 1.
  • multicast PDSCH uses g-RNTI for scrambling, and unicast PDSCH uses C-RNTI, MCS-C-RNTI or CS-RNTI for scrambling.
  • unicast DCI can be used to trigger HARQ-ACK feedback of the PDSCH of the group (such as group 1) where the multicast PDSCH is located.
  • the unicast PDSCH corresponds to a group, such as group 0; each g-RNTI corresponds to a group, such as different g-RNTIs correspond to different groups, such as groups 1, 2, ...;
  • groups 1, 2, ... such as groups 1, 2, ...
  • the unicast PDSCH is not grouped or does not belong to any group.
  • the above-mentioned target multicast PDSCH or the multicast PDSCH in the target PDSCH group refers to the PDSCH sent to a group of terminal devices through the same physical resource, which can also be called multicast PDSCH or broadcast PDSCH etc.
  • step 101 in the HARQ-ACK feedback method of the embodiment of the present application, the solution described in step 101 can be implemented in different ways, including but not limited to the following specific embodiments:
  • the foregoing unicast DCI includes the HARQ-ACK trigger indication field; further, the foregoing step 101 can be specifically executed as follows:
  • HARQ-ACK feedback is performed on the target multicast PDCSH or the PDSCH in the target PDSCH group, and the HARQ-ACK trigger indicator field is used for the target multicast PDSCH or The HARQ-ACK feedback of the PDSCH in the target PDSCH group is explicitly triggered.
  • the HARQ-ACK feedback can be performed on the target multicast PDCSH or the PDSCH in the target PDSCH group according to the explicit indication of the HARQ-ACK trigger indicator field.
  • the foregoing target multicast PDSCH or the multicast DCI corresponding to the multicast PDSCH in the target PDSCH group does not include the HARQ-ACK trigger indication field.
  • PDSCH1 and PDSCH2 are multicast PDSCHs scheduled by DCI1 and DCI2, respectively, and PDSCH3 is a unicast PDSCH scheduled by DCI3.
  • the corresponding multicast DCI does not include HARQ-ACK feedback timing indicator, PUCCH resource indicator, and transmit power control (Transmit Power Control, TPC) indicator, but includes DAI indicator, as shown in the figure, respectively.
  • the HARQ-ACK feedback time unit of the multicast PDSCH it is indicated by the respective unicast DCI of the UE.
  • T HARQ-ACK trigger indication field
  • the indication of DCI3 determines that HARQ-ACKs of multicast PDSCH1 and PDSCH2 are fed back in time slot n+2.
  • the PUCCH resource for feeding back HARQ-ACK can be determined according to the PUCCH Resource Indication (PRI) indication of DCI3
  • the PUCCH transmission power can be determined according to the TPC indication of DCI3 .
  • PRI PUCCH Resource Indication
  • the unicast DCI contains the HARQ-ACK trigger indicator field (the HARQ-ACK trigger indicator field is not included in the multicast DCI), and the network device (such as the base station) can explicitly indicate whether to trigger the UE to feed back the multicast PDSCH HARQ-ACK increases scheduling flexibility.
  • the HARQ-ACK feedback method corresponding to the first embodiment which group or which group contains the multicast PDSCH can be triggered according to the indication of the unicast DCI HARQ-ACK feedback of PDSCH corresponding to the group.
  • the above unicast DCI does not include the HARQ-ACK trigger indication field; further, the unicast DCI is used to multicast the HARQ-ACK of the target PDSCH or the PDSCH in the target PDSCH group.
  • ACK feedback is an implicit trigger indication.
  • HARQ-ACK feedback can be performed on the target multicast PDCSH or the PDSCH in the target PDSCH group according to the implicit indication of the unicast DCI.
  • the higher layer configures the corresponding HARQ-ACK feedback mode.
  • the UE After the UE receives the multicast PDSCH, it does not feed back its HARQ-ACK. Until the UE receives the unicast DCI, the unicast DCI triggers the UE to feedback the HARQ- of the multicast PDSCH. ACK, and the UE determines the time unit and resource for the HARQ-ACK feedback of the multicast PDSCH according to the indication of the unicast DCI.
  • PDSCH1 and PDSCH2 are the multicast PDSCHs scheduled by DCI1 and DCI2, respectively, UE1 and UE2 are both multicast UEs, PDSCH3-1 is the unicast PDSCH of UE1 scheduled by DCI3-1, and PDSCH3-2 is DCI3- 2 Unicast PDSCH of UE2 scheduled.
  • the time unit of the multicast PDSCH feedback it is indicated by the respective unicast DCI of the UE.
  • the PUCCH resource for feeding back HARQ-ACK can be determined according to the PRI indication of DCI3-1, and the PUCCH resource for feeding back HARQ-ACK, and according to the TPC indication of DCI3-1 PUCCH transmission power.
  • UE2 can determine the time unit, PUCCH resource, and transmission power used to feed back HARQ-ACK of PDSCH1 and PDSCH2 according to the instructions of DCI 3-2. As shown in the figure, UE feeds back multicast PDSCH1 in time slot n+2 HARQ-ACK with multicast PDSCH2 and unicast PDSCH3-2.
  • the unicast DCI does not need to include the HARQ-ACK trigger indication field, which can be used to trigger the multicast PDSCH (or divide the multicast PDSCH into a PDSCH group, which can be used to trigger the PDSCH in the PDSCH group where the multicast PDSCH is located. ), but the default unicast DCI always triggers the previously scheduled multicast PDSCH (for example, triggers the multicast PDSCH from the last unicast DCI to this unicast DCI) or where the multicast PDSCH is The HARQ-ACK feedback of the PDSCH in the PDSCH group (for example, triggers the PDSCH in the multicast PDSCH group from the last unicast DCI to this unicast DCI).
  • the HARQ-ACK trigger indication field which can be used to trigger the multicast PDSCH (or divide the multicast PDSCH into a PDSCH group, which can be used to trigger the PDSCH in the PDSCH group where the multicast PDSCH is located.
  • the DAI of the multicast PDSCH is indicated in the DCI corresponding to the multicast PDSCH, which avoids the problem of the fuzzy correspondence between the number of HARQ-ACK bits or the HARQ-ACK bit information and the PDSCH in the multicast feedback.
  • the HARQ- of the multicast PDSCH The ACK feedback time unit can be obtained according to the unicast DCI indication.
  • the HARQ-ACK feedback of different multicast UEs can be fed back on different time units or PUCCH resources to reduce the HARQ-ACK feedback load or PUCCH resources for a certain time unit Conflict issues.
  • the HARQ-ACK feedback method of the embodiment of the present application when performing HARQ-ACK feedback on the target multicast PDSCH or the PDCSH in the target PDSCH group containing the multicast PDSCH according to the unicast DCI indication, adopt The explicit indication manner corresponding to the foregoing embodiment one or the implicit indication manner corresponding to the foregoing embodiment two may be determined according to specific signaling issued by the network side. Specifically, before the above step 101, the following content may also be specifically included:
  • the above-mentioned first signaling may be high-layer signaling.
  • the unicast DCI may be the DCI that schedules the PDSCH or the DCI that does not schedule the PDSCH.
  • the multicast DCI corresponding to the target multicast PDSCH or the multicast PDSCH in the target PDSCH group includes a new feedback indicator (NFI) area.
  • NFI new feedback indicator
  • the multicast DCI corresponding to the target multicast PDSCH or the multicast PDSCH in the target PDSCH group includes the new feedback indication NFI field, which may be specified by the protocol.
  • the following content may also be included:
  • the step 101 receive second signaling from a network device, where the second signaling is used to indicate the multicast DCI corresponding to the target multicast PDSCH or the multicast PDSCH in the target PDSCH group Whether to include the new feedback indication NFI domain.
  • the network device may configure whether the multicast DCI corresponding to the target multicast PDSCH or the multicast PDSCH in the target PDSCH group includes the new feedback indication NFI domain.
  • the above-mentioned second signaling may be high-layer signaling.
  • the following content may also be included:
  • a third signaling from a network device is received; wherein, the third signaling is used to indicate whether the unicast DCI includes a new feedback indication NFI field.
  • the network device may configure whether the unicast DCI corresponding to the unicast PDSCH includes the new feedback indication NFI field.
  • the NFI field in the unicast DCI is used to indicate the target multicast PDSCH or the NFI corresponding to the target PDSCH group.
  • NFI NFI is represented by 1 bit, converted from 0 to 1, or converted from 1 to 0, both of which are considered to have been flipped. If the value is unchanged, it is considered that no flip has occurred). Only the new feedback is transmitted, or the previous feedback also needs to be retransmitted. If the NFI is overturned, all feedbacks for the target PDSCH group or the target multicast PDSCH before the DCI indicating the NFI overturn will be discarded, and only the unicast DCI and the PDSCH scheduled for the target PDSCH group or the target multicast PDSCH will be transmitted.
  • the unicast DCI includes a first downlink assignment index (Downlink Assignment Index, DAI), and the first DAI is used for the target multicast PDSCH Or the target PDSCH group.
  • DAI Downlink Assignment Index
  • the unicast DCI may be configured by the network device to include the DAI for the target PDSCH group or the target multicast PDSCH.
  • PDSCH1, PDSCH2, and PDSCH4 are respectively the multicast PDSCH scheduled by DCI1, DCI2, and DCI4 in a one-to-one correspondence
  • PDSCH3 is the unicast PDSCH scheduled by DCI3.
  • the multicast DCI also contains the NFI indication.
  • NFI 0 in DCI1
  • NFI 0 in DCI2
  • the time unit of the multicast PDSCH feedback is indicated by the respective unicast DCI of the UE, as shown in the figure, unicast
  • the DCI contains the HARQ-ACK trigger indication field (for example, T), which is used to trigger the UE to feed back the HARQ-ACK feedback of the previously scheduled multicast PDSCH (for example, all the previously scheduled multicast PDSCHs, and determine which PDSCHs are included according to whether the NFI is overturned, That is, all multicast PDSCHs after the last rollover of NFI).
  • T HARQ-ACK trigger indication field
  • the NFI in both DCI1 and DCI2 is equal to 0, and it is not flipped (assuming the NFI of the multicast PDSCH before DCI1 is 1), then the UE feeds back the HARQ-ACK of PDSCH1 and PDSCH2, and the HARQ-ACK of unicast PDSCH3, and according to DCI3
  • the PRI indicates that the PUCCH resource for feeding back HARQ-ACK is determined, and the PUCCH transmission power is determined according to the TPC indication of DCI3.
  • the UE will be in time slot n+5 Feedback the HARQ-ACK of multicast PDSCH4 (due to NFI inversion, the UE will not feedback the HARQ-ACK of multicast PDSCH1 and PDSCH2.
  • the unicast DCI may also include DAI to indicate the total number of triggered multicast PDSCHs.
  • the UE may determine the group that needs to be fed back in time slot n+2
  • the unicast DCI contains the HARQ-ACK trigger indicator (the multicast DCI does not contain the HARQ-ACK trigger indicator), the DCI of the multicast PDSCH contains the NFI, and the NFI is reversed, which means that the UE does not need to feed back the group before the reverse.
  • Broadcast the HARQ-ACK of the PDSCH (it should be noted that when the NFI is reversed, the DAI of the corresponding multicast PDSCH should restart counting), the network device (such as the base station) can explicitly indicate whether to trigger the UE to feedback the HARQ-ACK of the multicast PDSCH , And determine which multicast PDSCH HARQ-ACK feedback is triggered by whether the NFI is flipped or not, which increases scheduling flexibility.
  • the unicast DCI may also include an NFI indication field to indicate the scheduling of the multicast PDSCH.
  • NFI 0 in DCI3, which is the same as NFI in DCI1 and DCI2, then Trigger the UE to feed back the HARQ-ACK of PDSCH1 and PDSCH2.
  • the unicast DCI includes NFI and or multicast PDSCH DAI to indicate the number of bits corresponding to the multicast HARQ-ACK, which can avoid the problem of inconsistent understanding of the codebook size.
  • the PDSCH is divided into different groups according to the RNTI of the DCI or the PDSCH.
  • the multicast PDSCH belongs to one group, and the unicast DCI is used to trigger the HARQ-ACK feedback of the PDSCH in the multicast PDSCH group.
  • the DAI in the multicast DCI or the DAI used in the unicast DCI to indicate the multicast PDSCH, and the NFI is an indication for the PDSCH in the multicast PDSCH group.
  • the HARQ-ACK feedback of the multicast PDSCH is triggered, it can be triggered by per priority or regardless of priority, including but not limited to the following specific embodiments:
  • the multicast PDSCH corresponds to a HARQ-ACK feedback priority.
  • the above unicast DCI may satisfy one of the following:
  • the HARQ-ACK feedback priority corresponding to the unicast DCI is the same as the HARQ-ACK feedback priority of the multicast PDSCH; or the HARQ-ACK feedback priority of the PDSCH corresponding to the unicast DCI is the same as that of the multicast PDSCH
  • the HARQ-ACK feedback priority is the same.
  • the HARQ-ACK feedback of the multicast PDSCH is triggered in a way or an implicit way.
  • the HARQ-ACK feedback of the multicast PDSCH may be triggered to indicate a specific priority (for example, high priority or low priority).
  • unicast DCI with the same HARQ-ACK feedback priority as the multicast PDSCH which triggers the UE to feed back the HARQ-ACK feedback of the multicast PDSCH; that is, it indicates that the HARQ- that is not specific or has a different HARQ-
  • the ACK feedback priority unicast DCI does not trigger the UE to feed back the HARQ-ACK feedback of the multicast PDSCH, or the UE can ignore the trigger indication of the HARQ-ACK feedback of the multicast PDSCH in the unicast DCI at this time.
  • the unicast DCI corresponds to any HARQ-ACK feedback priority; or the PDSCH corresponding to the unicast DCI corresponds to any HARQ-ACK feedback priority.
  • the HARQ-ACK feedback of the multicast PDSCH when the HARQ-ACK feedback priority corresponding to the multicast PDSCH and the HARQ-ACK feedback priority corresponding to the unicast PDSCH are only one or both are not prioritized, the HARQ-ACK feedback of the multicast PDSCH The trigger can be triggered regardless of priority.
  • the unicast PDSCH corresponds to multiple HARQ-ACK priorities
  • the HARQ-ACK feedback of the multicast PDSCH is triggered, and any unicast DCI indicating the HARQ-ACK feedback priority can trigger the UE
  • the HARQ-ACK feedback of the multicast PDSCH is fed back, that is, unicast DCI of any priority can trigger the HARQ-ACK feedback of the multicast PDSCH.
  • the multicast PDSCH in the first embodiment includes the above-mentioned target multicast PDSCH or the multicast PDSCH in the target PDSCH group.
  • the foregoing multicast PDSCH corresponds to multiple HARQ-ACK feedback priorities.
  • the above unicast DCI is used to indicate one of the following:
  • the HARQ-ACK of the multicast PDSCH triggered by the unicast DCI can indicate which priority HARQ-ACK feedback is triggered (that is, the first HARQ-ACK feedback priority).
  • the 2-bit trigger indication field contained in unicast DCI can be used to indicate which priority is triggered. If the HARQ-ACK is fed back, the UE only feeds back the HARQ-ACK of the corresponding priority multicast PDSCH.
  • the HARQ-ACK feedback of the multicast PDSCH triggered by the unicast DCI can indicate which one is triggered Priority HARQ-ACK feedback (that is, the first HARQ-ACK feedback priority).
  • the unicast DCI indicating high priority is used to trigger the HARQ-ACK corresponding to the high priority multicast PDSCH, and the unicast DCI indicating low priority is used to trigger the HARQ-ACK corresponding to the low priority multicast PDSCH.
  • the unicast DCI can directly trigger the multicast of all priorities
  • the HARQ-ACK feedback of the PDSCH does not need to indicate which priority HARQ-ACK feedback is triggered.
  • the third HARQ-ACK may be indicated
  • the unicast DCI with the feedback priority can only trigger the HARQ-ACK feedback of the multicast PDSCH with the second HARQ-ACK feedback priority; optional, if the second HARQ-ACK feedback priority and the third HARQ-ACK feedback priority Same, it means that unicast DCI can only trigger HARQ-ACK feedback of multicast PDSCH with the same HARQ-ACK feedback priority; otherwise, when the third HARQ-ACK feedback priority is different from the second HARQ-ACK feedback priority , The unicast DCI cannot trigger the UE to feedback the HARQ-ACK feedback of the multicast PDSCH, or the UE ignores the trigger indication of the HARQ-ACK feedback of the multicast PDSCH at this time.
  • the multicast PDSCH in the second embodiment includes the above-mentioned target multicast PDSCH or the multicast PDSCH in the target PDSCH group.
  • an embodiment of the present application provides a HARQ-ACK feedback method, which is executed by a network device, and the method includes the following process steps:
  • Step 201 Send unicast DCI to a terminal device, where the unicast DCI is used to instruct the terminal device to feedback HARQ-ACK of the target multicast PDSCH or the PDSCH in the target PDSCH group; wherein PDSCH includes multicast PDSCH.
  • unicast DCI can be sent to the terminal device, so that the terminal device can perform HARQ on the target multicast PDSCH or the PDSCH in the target PDSCH group containing the multicast PDSCH according to the indication of the unicast DCI.
  • ACK feedback to support HARQ-ACK feedback of multicast PDSCH.
  • the multicast PDSCH of different multicast terminal devices can be made to perform HARQ-ACK feedback at different times and resources to use different transmission powers, improve the effectiveness of the communication system, and reduce the multicast HARQ of a certain time unit. -ACK feedback load.
  • the foregoing target multicast PDSCH is included in at least one first PDSCH group, or the target PDSCH group includes at least one first PDSCH group, and the first The PDSCH in the PDSCH group includes a multicast PDSCH; wherein, the at least one first PDSCH group is included in one or more PDSCH groups, and the one or more PDSCH groups are obtained based on grouping the PDSCH.
  • the PDSCH can be grouped to accurately determine the PDSCH group in which the multicast PDSCH is located.
  • the terminal device can perform HARQ-ACK feedback on the PDSCH in at least one first PDSCH group containing the multicast PDSCH according to the instruction of the unicast DCI, so as to realize the target multicast PDSCH. Or the HARQ-ACK feedback of the PDSCH in the target PDSCH group.
  • the above-mentioned one or more PDSCH groups are obtained by grouping the PDSCHs based on one of the following:
  • the RNTI corresponding to the PDSCH that is, the RNTI that scrambles the PDSCH, or the RNTI that corresponds to the DCI, that is, the RNTI that scrambles the DCI (such as DCI with X-RNTI or DCI with CRC scrambled by X).
  • -RNTI divide the PDSCH into different groups.
  • the PDSCH scrambled by RNTI such as C-RNTI, MCS-C-RNIT or CS-RNTI is a group, such as group 0;
  • the PDSCH scrambled by g-RNTI is a group, such as group 1.
  • the multicast PDSCH uses g-RNTI to scramble
  • the unicast PDSCH uses C-RNTI, MCS-C-RNTI or CS-RNTI to scramble.
  • unicast DCI can be used to trigger HARQ-ACK feedback of the PDSCH of the group (such as group 1) where the multicast PDSCH is located.
  • the unicast PDSCH corresponds to a group, such as group 0; each g-RNTI corresponds to a group, such as different g-RNTIs correspond to different groups, such as groups 1, 2, ...; Or only the multicast PDSCH has a corresponding PDSCH group, and the unicast PDSCH is not grouped or does not belong to any group.
  • the above-mentioned target multicast PDSCH or the multicast PDSCH in the target PDSCH group refers to the PDSCH sent to a group of terminal devices through the same physical resource, which can also be called multicast PDSCH or broadcast PDSCH etc.
  • the foregoing unicast DCI includes a HARQ-ACK trigger indicator field; wherein, the HARQ-ACK trigger indicator field is used to send a message to the target multicast PDCSH
  • the HARQ-ACK feedback of the PDCSH in the target PDSCH group performs an explicit trigger indication.
  • the terminal device can be explicitly indicated through the HARQ-ACK trigger indicator field, so that the terminal device performs HARQ on the target multicast PDCSH or the PDSCH in the target PDSCH group -ACK feedback.
  • the foregoing target multicast PDSCH or the multicast DCI corresponding to the multicast PDSCH in the target PDSCH group does not include the HARQ-ACK trigger indication field.
  • the above unicast DCI does not include the HARQ-ACK trigger indication field; wherein, the unicast DCI is used to multicast the PDCSH or the target
  • the HARQ-ACK feedback of the PDCSH in the target PDSCH group is implicitly triggered.
  • the terminal device can be implicitly indicated through the unicast DCI to enable the terminal device to perform HARQ-ACK on the target multicast PDCSH or the PDSCH in the target PDSCH group Feedback.
  • the corresponding HARQ-ACK feedback mode can be configured by the higher layer so that the UE does not feed back its HARQ-ACK after receiving the multicast PDSCH.
  • the unicast DCI triggers the UE to feed back the multicast PDSCH.
  • the HARQ-ACK, and the time unit and resource for the HARQ-ACK feedback of the multicast PDSCH to be determined by the UE according to the indication of the unicast DCI.
  • the following content may also be included:
  • the first signaling is used to indicate that the unicast DCI is used for HARQ-ACK feedback to the target multicast PDSCH or the PDCSH in the target PDSCH group , Perform an explicit trigger instruction or an implicit trigger instruction.
  • the first signaling specifically instructs the terminal device to accurately determine that the unicast DCI is used for explicit HARQ-ACK feedback of the target multicast PDSCH or the PDCSH in the target PDSCH group containing the multicast PDSCH Instructions or implicit instructions.
  • the above-mentioned first signaling may be high-layer signaling.
  • the unicast DCI may be the DCI that schedules the PDSCH or the DCI that does not schedule the PDSCH.
  • the multicast DCI corresponding to the target multicast PDSCH or the multicast PDSCH in the target PDSCH group includes a new feedback indication NFI domain.
  • the multicast DCI corresponding to the target multicast PDSCH or the multicast PDSCH in the target PDSCH group includes the new feedback indication NFI field, which may be specified by the protocol.
  • the following content may also be included:
  • the network device may configure whether the multicast DCI corresponding to the target multicast PDSCH or the multicast PDSCH in the target PDSCH group includes the new feedback indication NFI domain.
  • the above-mentioned second signaling may be high-layer signaling.
  • the following content may also be included:
  • the network device may configure whether the unicast DCI corresponding to the unicast PDSCH includes the new feedback indication NFI field.
  • the NFI field in the unicast DCI is used to indicate the target multicast PDSCH or the NFI corresponding to the target PDSCH group.
  • NFI NFI is represented by 1 bit, converted from 0 to 1, or converted from 1 to 0, both of which are considered to have been flipped. If the value is unchanged, it is considered that no flip has occurred). Only the new feedback is transmitted, or the previous feedback also needs to be retransmitted. If the NFI is overturned, all feedbacks for the target PDSCH group or the target multicast PDSCH before the DCI indicating the NFI overturn will be discarded, and only the unicast DCI and the PDSCH scheduled for the target PDSCH group or the target multicast PDSCH will be transmitted.
  • the unicast DCI includes a first downlink allocation index DAI, and the first DAI is used for the target multicast PDSCH or the target PDSCH Group.
  • the unicast DCI can be configured to include the DAI for the target PDSCH group or the target multicast PDSCH.
  • the unicast DCI satisfies one of the following:
  • the HARQ-ACK feedback priority corresponding to the unicast DCI is the same as the HARQ-ACK feedback priority of the multicast PDSCH; or the HARQ-ACK feedback priority of the PDSCH corresponding to the unicast DCI is the same as the HARQ-ACK feedback priority of the multicast PDSCH.
  • the ACK feedback has the same priority.
  • the multicast can be triggered according to the above embodiment HARQ-ACK feedback of PDSCH.
  • the HARQ-ACK feedback of the multicast PDSCH can be triggered to indicate a specific priority (for example, high priority or low priority) or be related to the multicast
  • the PDSCH has unicast DCI with the same HARQ-ACK feedback priority, which triggers the UE to feed back the HARQ-ACK feedback of the multicast PDSCH; in other words, it indicates the unicast DCI that is not specific or has a HARQ-ACK feedback priority different from that of the multicast PDSCH.
  • Broadcasting the DCI does not trigger the UE to feedback the HARQ-ACK feedback of the multicast PDSCH, or the UE can ignore the trigger indication of the HARQ-ACK feedback of the multicast PDSCH in the unicast DCI at this time.
  • the unicast DCI corresponds to any HARQ-ACK feedback priority; or the PDSCH corresponding to the unicast DCI corresponds to any HARQ-ACK feedback priority.
  • the triggering of the HARQ-ACK feedback of the multicast PDSCH can be given no priority. Level trigger. If the unicast PDSCH corresponds to multiple HARQ-ACK priorities, the HARQ-ACK feedback of the multicast PDSCH is triggered, and any unicast DCI indicating any HARQ-ACK feedback priority can trigger the UE to feedback the HARQ of the multicast PDSCH -ACK feedback, that is, unicast DCI of any priority can trigger HARQ-ACK feedback of multicast PDSCH.
  • the multicast PDSCH in (1) and (2) above includes the target multicast PDSCH or the multicast PDSCH in the target PDSCH group.
  • the unicast DCI is used to indicate one of the following:
  • the HARQ-ACK feedback of the multicast PDSCH triggered by the unicast DCI can indicate which one is triggered Priority HARQ-ACK feedback (that is, the first HARQ-ACK feedback priority).
  • the unicast DCI indicating high priority is used to trigger the HARQ-ACK corresponding to the high priority multicast PDSCH, and the unicast DCI indicating low priority is used to trigger the HARQ-ACK corresponding to the low priority multicast PDSCH.
  • the unicast DCI can directly trigger the multicast of all priorities
  • the HARQ-ACK feedback of the PDSCH does not need to indicate which priority HARQ-ACK feedback is triggered.
  • the third HARQ-ACK may be indicated
  • the unicast DCI with the feedback priority can only trigger the HARQ-ACK feedback of the multicast PDSCH with the second HARQ-ACK feedback priority; optional, if the second HARQ-ACK feedback priority and the third HARQ-ACK feedback priority Same, it means that unicast DCI can only trigger HARQ-ACK feedback of multicast PDSCH with the same HARQ-ACK feedback priority; otherwise, when the third HARQ-ACK feedback priority is different from the second HARQ-ACK feedback priority , The unicast DCI cannot trigger the UE to feedback the HARQ-ACK feedback of the multicast PDSCH, or the UE ignores the trigger indication of the HARQ-ACK feedback of the multicast PDSCH at this time.
  • the multicast PDSCH in (1) to (3) above includes the target multicast PDSCH or the multicast PDSCH in the target PDSCH group.
  • an embodiment of the present application provides a terminal device 300, and the terminal device 300 includes:
  • the feedback module 301 is configured to perform HARQ-ACK feedback on the target multicast PDSCH or the PDSCH in the target PDSCH group according to the unicast DCI instruction; wherein, the PDSCH in the target PDSCH group includes the multicast PDSCH.
  • the terminal device 300 of the embodiment of the present application may further include:
  • the grouping module is used to group the PDSCHs to obtain one or more PDSCH groups before performing HARQ-ACK feedback on the target multicast PDSCH or the PDSCHs in the target PDSCH group according to the unicast DCI indication.
  • the or multiple PDSCH groups include at least one first PDSCH group, and the PDSCH in the first PDSCH group includes a multicast PDSCH; wherein, the target multicast PDSCH is included in the at least one first PDSCH group, or The target PDSCH group includes the at least one first PDSCH group.
  • the foregoing grouping module may be used to perform one of the following operations:
  • the foregoing unicast DCI includes a HARQ-ACK trigger indication field; wherein, the foregoing feedback module 301 may be specifically used for:
  • HARQ-ACK feedback is performed on the target multicast PDCSH or the PDSCH in the target PDSCH group, and the HARQ-ACK trigger indicator field is used for the target multicast PDSCH or The HARQ-ACK feedback of the PDSCH in the target PDSCH group is explicitly triggered.
  • the foregoing target multicast PDSCH or the multicast DCI corresponding to the multicast PDSCH in the target PDSCH group does not include the HARQ-ACK trigger indication field.
  • the above unicast DCI does not include the HARQ-ACK trigger indication field; wherein, the unicast DCI is used to multicast the target PDSCH or the target PDSCH The HARQ-ACK feedback of the PDSCH in the group is implicitly triggered.
  • the terminal device 300 of the embodiment of the present application may further include:
  • the receiving module is configured to receive the first signaling from the network device before the HARQ-ACK feedback is performed on the target multicast PDSCH or the PDSCH in the target PDSCH group according to the unicast DCI instruction; wherein, the first signaling The signaling is used to indicate that the unicast DCI is used for HARQ-ACK feedback of the target multicast PDSCH or the PDSCH in the target PDSCH group, and performs an explicit triggering instruction or an implicit triggering instruction.
  • the multicast DCI corresponding to the target multicast PDSCH or the multicast PDSCH in the target PDSCH group includes a new feedback indication NFI domain.
  • the above-mentioned receiving module may also be used for:
  • the second signaling from the network device is received; wherein, the second signaling is used to indicate Whether the target multicast PDSCH or the multicast DCI corresponding to the multicast PDSCH in the target PDSCH group includes a new feedback indication NFI domain.
  • the above-mentioned receiving module may also be used for:
  • the third signaling from the network device is received; wherein, the third signaling is used to indicate Whether the unicast DCI includes a new feedback indication NFI field.
  • the NFI domain in the unicast DCI is used to indicate the target multicast PDSCH or The NFI corresponding to the target PDSCH group.
  • the unicast DCI includes a first downlink allocation index DAI, and the first DAI is used for the target multicast PDSCH or the target PDSCH group.
  • the unicast DCI described above satisfies one of the following:
  • the HARQ-ACK feedback priority corresponding to the unicast DCI is the same as the HARQ-ACK feedback priority of the multicast PDSCH; the HARQ-ACK feedback priority of the PDSCH corresponding to the unicast DCI is the same as the HARQ-ACK feedback of the multicast PDSCH The priority is the same; the unicast DCI corresponds to any HARQ-ACK feedback priority; the PDSCH corresponding to the unicast DCI corresponds to any HARQ-ACK feedback priority.
  • the unicast DCI is used to indicate one of the following:
  • the first HARQ-ACK feedback priority is the unicast DCI indicated in the multiple HARQ-ACK feedback priorities One priority; corresponding to the HARQ-ACK feedback of the multicast PDSCH of any HARQ-ACK feedback priority among the multiple HARQ-ACK feedback priorities; the HARQ-ACK feedback of the multicast PDSCH corresponding to the second HARQ-ACK feedback priority HARQ-ACK feedback; wherein the PDSCH corresponding to the unicast DCI or the unicast DCI corresponds to the third HARQ-ACK feedback priority.
  • the terminal device 300 provided in the embodiment of the present application can implement the aforementioned HARQ-ACK feedback method performed by the terminal device 300, and the relevant explanations about the HARQ-ACK feedback method are all applicable to the terminal device 300, and will not be repeated here.
  • HARQ-ACK feedback can be performed on the target multicast PDSCH or the PDSCH in the target PDSCH group containing the multicast PDSCH according to the unicast DCI instruction issued by the network device, so as to realize the multicast PDSCH HARQ-ACK feedback support.
  • the multicast PDSCH of different multicast terminal devices can be made to perform HARQ-ACK feedback at different times and resources to use different transmission powers, improve the effectiveness of the communication system, and reduce the multicast HARQ of a certain time unit. -ACK feedback load.
  • an embodiment of the present application provides a network device 400, and the network device 400 includes:
  • the sending module 401 is configured to send unicast DCI to a terminal device, where the unicast DCI is used to instruct the terminal device to give HARQ-ACK feedback of a target multicast PDSCH or a PDSCH in a target PDSCH group; wherein, the target PDSCH The PDSCH in the group includes multicast PDSCH.
  • the foregoing target multicast PDSCH is included in at least one first PDSCH group, or the target PDSCH group includes at least one first PDSCH group, and the first PDSCH group
  • the PDSCH in includes a multicast PDSCH; wherein the at least one first PDSCH group is included in one or more PDSCH groups, and the one or more PDSCH groups are obtained based on grouping the PDSCH.
  • the above-mentioned one or more PDSCH groups are obtained by grouping the PDSCHs based on one of the following:
  • the foregoing unicast DCI includes a HARQ-ACK trigger indicator field; wherein, the HARQ-ACK trigger indicator field is used to multicast the target PDCSH to the target The HARQ-ACK feedback of PDCSH in the PDSCH group is explicitly triggered.
  • the multicast DCI corresponding to the target multicast PDSCH or the multicast PDSCH in the target PDSCH group does not include the HARQ-ACK trigger indication field.
  • the above unicast DCI does not include the HARQ-ACK trigger indication field; wherein, the unicast DCI is used to multicast the PDCSH or the target PDSCH
  • the HARQ-ACK feedback of PDCSH in the group is implicitly triggered.
  • the above-mentioned sending module 401 may also be used for:
  • the first signaling is used to indicate that the unicast DCI is used for HARQ-ACK feedback to the target multicast PDSCH or the PDCSH in the target PDSCH group , Perform an explicit trigger instruction or an implicit trigger instruction.
  • the multicast DCI corresponding to the target multicast PDSCH or the multicast PDSCH in the target PDSCH group includes a new feedback indication NFI domain.
  • the above-mentioned sending module 401 may also be used for:
  • the above-mentioned sending module 401 may also be used for:
  • the NFI field in the unicast DCI is used to indicate the target multicast PDSCH or The NFI corresponding to the target PDSCH group.
  • the unicast DCI includes a first downlink allocation index DAI, and the first DAI is used for the target multicast PDSCH or the target PDSCH group .
  • the unicast DCI described above satisfies one of the following:
  • the HARQ-ACK feedback priority corresponding to the unicast DCI is the same as the HARQ-ACK feedback priority of the multicast PDSCH; the HARQ-ACK feedback priority of the PDSCH corresponding to the unicast DCI is the same as the HARQ-ACK feedback of the multicast PDSCH The priority is the same; the unicast DCI corresponds to any HARQ-ACK feedback priority; the PDSCH corresponding to the unicast DCI corresponds to any HARQ-ACK feedback priority.
  • the unicast DCI is used to indicate one of the following:
  • the first HARQ-ACK feedback priority is the unicast DCI indicated in the multiple HARQ-ACK feedback priorities One priority; corresponding to the HARQ-ACK feedback of the multicast PDSCH of any HARQ-ACK feedback priority among the multiple HARQ-ACK feedback priorities; the HARQ-ACK feedback of the multicast PDSCH corresponding to the second HARQ-ACK feedback priority HARQ-ACK feedback; wherein the PDSCH corresponding to the unicast DCI or the unicast DCI corresponds to the third HARQ-ACK feedback priority.
  • the network device 400 provided in the embodiment of the present application can implement the aforementioned HARQ-ACK feedback method performed by the network device 400, and the relevant explanations about the HARQ-ACK feedback method are all applicable to the network device 400, and will not be repeated here.
  • unicast DCI can be sent to the terminal device, so that the terminal device can perform HARQ on the target multicast PDSCH or the PDSCH in the target PDSCH group containing the multicast PDSCH according to the indication of the unicast DCI.
  • ACK feedback to support HARQ-ACK feedback of multicast PDSCH.
  • the multicast PDSCH of different multicast terminal devices can be made to perform HARQ-ACK feedback at different times and resources to use different transmission powers, improve the effectiveness of the communication system, and reduce the multicast HARQ of a certain time unit. -ACK feedback load.
  • Fig. 8 is a block diagram of a terminal device according to another embodiment of the present application.
  • the terminal device 500 shown in FIG. 8 includes: at least one processor 501, a memory 502, at least one network interface 504, and a user interface 503.
  • the various components in the terminal device 500 are coupled together through the bus system 505.
  • the bus system 505 is used to implement connection and communication between these components.
  • the bus system 505 also includes a power bus, a control bus, and a status signal bus.
  • various buses are marked as the bus system 505 in FIG. 8.
  • the user interface 503 may include a display, a keyboard, or a pointing device (for example, a mouse, a trackball (trackball), a touch panel, or a touch screen, etc.).
  • a pointing device for example, a mouse, a trackball (trackball), a touch panel, or a touch screen, etc.
  • the memory 502 in the embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), and electrically available Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be a random access memory (Random Access Memory, RAM), which is used as an external cache.
  • RAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • Synchronous DRAM Double Data Rate Synchronous Dynamic Random Access Memory
  • Double Data Rate SDRAM Double Data Rate SDRAM
  • DDRSDRAM Double Data Rate Synchronous Dynamic Random Access Memory
  • Enhanced SDRAM Enhanced SDRAM, ESDRAM
  • Synchronous Link Dynamic Random Access Memory Synchronous Link Dynamic Random Access Memory
  • Synchlink DRAM Synchronous Link Dynamic Random Access Memory
  • SLDRAM Direct Rambus RAM
  • the memory 502 of the system and method described in the embodiments of the present application is intended to include, but is not limited to, these and any other suitable types of memory.
  • the memory 502 stores the following elements, executable modules or data structures, or a subset of them, or an extended set of them: operating system 5021 and application programs 5022.
  • the operating system 5021 includes various system programs, such as a framework layer, a core library layer, a driver layer, etc., for implementing various basic services and processing hardware-based tasks.
  • the application program 5022 includes various application programs, such as a media player (Media Player), a browser (Browser), etc., which are used to implement various application services.
  • the program for implementing the method of the embodiment of the present application may be included in the application program 5022.
  • the terminal device 500 further includes: a program or instruction that is stored in the memory 502 and can run on the processor 501, and the program or instruction is executed by the processor 501 to implement the following steps:
  • HARQ-ACK feedback is performed on the target multicast PDSCH or the PDSCH in the target PDSCH group; wherein the PDSCH in the target PDSCH group includes the multicast PDSCH.
  • HARQ-ACK feedback can be performed on the target multicast PDSCH or the PDSCH in the target PDSCH group containing the multicast PDSCH according to the unicast DCI instruction issued by the network device, so as to realize the multicast PDSCH HARQ-ACK feedback support.
  • the multicast PDSCH of different multicast terminal devices can be made to perform HARQ-ACK feedback at different times and resources to use different transmission powers, improve the effectiveness of the communication system, and reduce the multicast HARQ of a certain time unit. -ACK feedback load.
  • the method disclosed in the foregoing embodiment of the present application may be applied to the processor 501 or implemented by the processor 501.
  • the processor 501 may be an integrated circuit chip with signal processing capability. In the implementation process, the steps of the foregoing method can be completed by an integrated logic circuit of hardware in the processor 501 or instructions in the form of software.
  • the aforementioned processor 501 may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a ready-made programmable gate array (Field Programmable Gate Array, FPGA) or other Programmable logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA ready-made programmable gate array
  • Programmable logic devices discrete gates or transistor logic devices, discrete hardware components.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor.
  • the software module may be located in a computer-readable storage medium that is mature in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
  • the computer-readable storage medium is located in the memory 502, and the processor 501 reads the information in the memory 502, and completes the steps of the foregoing method in combination with its hardware.
  • a computer program is stored on the computer-readable storage medium, and when the computer program is executed by the processor 501, each step as in the foregoing HARQ-ACK feedback method embodiment is implemented.
  • the embodiments described in the embodiments of the present application can be implemented by hardware, software, firmware, middleware, microcode, or a combination thereof.
  • the processing unit can be implemented in one or more application specific integrated circuits (ASIC), digital signal processor (Digital Signal Processing, DSP), digital signal processing equipment (DSP Device, DSPD), programmable Logic device (Programmable Logic Device, PLD), Field-Programmable Gate Array (Field-Programmable Gate Array, FPGA), general-purpose processors, controllers, microcontrollers, microprocessors, and others for performing the functions described in this application Electronic unit or its combination.
  • ASIC application specific integrated circuits
  • DSP Digital Signal Processing
  • DSP Device digital signal processing equipment
  • PLD programmable Logic Device
  • PLD Field-Programmable Gate Array
  • FPGA Field-Programmable Gate Array
  • the technology described in the embodiments of the present application can be implemented by modules (for example, procedures, functions, etc.) that execute the functions described in the embodiments of the present application.
  • the software codes can be stored in the memory and executed by the processor.
  • the memory can be implemented in the processor or external to the processor.
  • the terminal device 500 can implement the various processes implemented by the terminal device in the foregoing embodiments, and in order to avoid repetition, details are not described herein again.
  • the embodiment of the present application further provides a terminal device, including a processor, a memory, and a program or instruction stored on the memory and running on the processor.
  • the program or instruction is executed by the processor to realize the HARQ.
  • a terminal device including a processor, a memory, and a program or instruction stored on the memory and running on the processor.
  • the program or instruction is executed by the processor to realize the HARQ.
  • Each process of the embodiment of the ACK feedback method can achieve the same technical effect. In order to avoid repetition, it will not be repeated here.
  • the embodiments of the present application also provide a readable storage medium, the readable storage medium stores a program or instruction, and when the program or instruction is executed by a processor, each of the foregoing HARQ-ACK feedback method embodiments applied to a terminal device is realized
  • the process and can achieve the same technical effect, in order to avoid repetition, I will not repeat it here.
  • the processor is the processor in the terminal device described in the foregoing embodiment.
  • the readable storage medium includes a computer readable storage medium, such as a computer read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disks, or optical disks.
  • FIG. 9 is a structural diagram of a network device applied in an embodiment of the present application, which can realize the details of the foregoing HARQ-ACK feedback method and achieve the same effect.
  • the network device 600 includes: a processor 601, a transceiver 602, a memory 603, a user interface 604, and a bus interface 605, where:
  • the network device 600 further includes: a program or instruction that is stored in the memory 603 and can run on the processor 601, and when the program or instruction is executed by the processor 601, the following steps are implemented:
  • unicast DCI can be sent to the terminal device, so that the terminal device can perform HARQ on the target multicast PDSCH or the PDSCH in the target PDSCH group containing the multicast PDSCH according to the indication of the unicast DCI.
  • ACK feedback to support HARQ-ACK feedback of multicast PDSCH.
  • the multicast PDSCH of different multicast terminal devices can be made to perform HARQ-ACK feedback at different times and resources to use different transmission powers, improve the effectiveness of the communication system, and reduce the multicast HARQ of a certain time unit. -ACK feedback load.
  • the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 601 and various circuits of the memory represented by the memory 603 are linked together. The bus architecture can also link various other circuits such as peripherals, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, will not be further described herein.
  • the bus interface 605 provides an interface.
  • the transceiver 602 may be a plurality of elements, including a transmitter and a receiver, and provide a unit for communicating with various other devices on the transmission medium.
  • the user interface 604 may also be an interface that can externally and internally connect the required equipment.
  • the connected equipment includes but is not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the processor 601 is responsible for managing the bus architecture and general processing, and the memory 603 can store data used by the processor 601 when performing operations.
  • an embodiment of the present application further provides a network device, including a processor, a memory, and a program or instruction stored in the memory and capable of running on the processor, and the program or instruction is executed by the processor to implement the HARQ.
  • a network device including a processor, a memory, and a program or instruction stored in the memory and capable of running on the processor, and the program or instruction is executed by the processor to implement the HARQ.
  • the embodiments of the present application also provide a readable storage medium, the readable storage medium stores a program or instruction, and when the program or instruction is executed by a processor, each of the foregoing HARQ-ACK feedback method embodiments applied to a network device is realized
  • the process and can achieve the same technical effect, in order to avoid repetition, I will not repeat it here.
  • the processor is the processor in the network device described in the foregoing embodiment.
  • the readable storage medium includes a computer readable storage medium, such as a computer read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disks, or optical disks.
  • the method of the above embodiments can be implemented by means of software plus the necessary general hardware platform. Of course, it can also be implemented by hardware, but in many cases the former is better. ⁇
  • the technical solution of this application essentially or the part that contributes to the existing technology can be embodied in the form of a software product, and the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, The optical disc) includes several instructions to make a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the methods described in the various embodiments of the present application.

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

Abstract

La présente invention concerne un procédé de retour d'accusé de réception de demande de répétition automatique hybride (HARQ-ACK), un dispositif terminal et un dispositif de réseau. Le procédé de retour de HARQ-ACK comprend : en fonction d'une indication d'informations DCI de diffusion individuelle, la réalisation d'un retour de HARQ-ACK sur un canal PDSCH cible de multidiffusion ou sur un canal PDSCH dans un groupe de canaux PDSCH cibles, le canal PDSCH dans le groupe de canaux PDSCH cibles comprenant un canal PDSCH de multidiffusion.
PCT/CN2021/095885 2020-05-26 2021-05-25 Procédé de retour d'accusé de réception de demande de répétition automatique hybride, dispositif terminal et dispositif de réseau WO2021238941A1 (fr)

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CN113839747B (zh) * 2020-06-08 2023-02-03 维沃移动通信有限公司 混合自动重传请求harq反馈方法、终端设备和网络设备

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