WO2022077522A1 - Procédé et appareil d'indication d'informations de rétroaction - Google Patents

Procédé et appareil d'indication d'informations de rétroaction Download PDF

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Publication number
WO2022077522A1
WO2022077522A1 PCT/CN2020/121707 CN2020121707W WO2022077522A1 WO 2022077522 A1 WO2022077522 A1 WO 2022077522A1 CN 2020121707 W CN2020121707 W CN 2020121707W WO 2022077522 A1 WO2022077522 A1 WO 2022077522A1
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Prior art keywords
information
harq
resource
value
ack
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PCT/CN2020/121707
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English (en)
Chinese (zh)
Inventor
苏桐
官磊
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2020/121707 priority Critical patent/WO2022077522A1/fr
Priority to PCT/CN2021/115101 priority patent/WO2022078082A1/fr
Priority to CN202180065716.8A priority patent/CN116508277A/zh
Publication of WO2022077522A1 publication Critical patent/WO2022077522A1/fr

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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

Definitions

  • the present application relates to the field of communication, and more particularly, to a method and apparatus for indicating feedback information in the field of communication.
  • the fifth generation (5G) mobile communication system is committed to supporting higher system performance, and the downlink transmission of the 5G new radio (NR) supports the physical downlink shared channel (PDSCH).
  • PDSCH physical downlink shared channel
  • HARQ hybrid automatic repeat request
  • the reliability of downlink data transmission can be greatly improved through the HARQ mechanism, and on the other hand, the data transmission efficiency is improved.
  • unicast adopts HARQ mechanism to ensure the reliability of transmission.
  • the UE After the user equipment (UE) receives the PDSCH, if the reception is correct, the UE feeds back the acknowledgement (ACK) information on the physical uplink control channel (PUCCH). If it is not correct, the negative acknowledgement (NACK) information is fed back on the PUCCH.
  • the time domain position of the PUCCH where the feedback information is located is indicated by downlink control information (DCI).
  • DCI downlink control information
  • the UE transmits HARQ-ACK information on the PUCCH the UE needs to confirm a PUCCH resource set, which includes multiple PUCCH resources, and confirms one PUCCH resource in the resource set to transmit the HARQ-ACK information.
  • the HARQ feedback mechanism is introduced into the NR multicast, and the base station can grasp the reception of the data using the multicast scheduling through the feedback information of the users, so as to improve the transmission reliability of the communication system.
  • the base station can grasp the reception of the data using the multicast scheduling through the feedback information of the users, so as to improve the transmission reliability of the communication system.
  • each UE performs HARQ feedback on PUCCH resources, which will occupy a lot of uplink resources.
  • the present application provides a method and apparatus for indicating feedback information, which can explicitly or implicitly instruct a terminal device not to send HARQ-ACK information of a hybrid automatic repeat request, thereby reducing the occupation of HARQ feedback under multicast scheduling
  • the uplink resources increase the flexibility of multicast HARQ feedback.
  • a first aspect provides a method for indicating feedback information.
  • the execution body of the method can be either a terminal device or a chip applied to the terminal device. Taking the execution body as the terminal device as an example, the method includes: the terminal device receives Downlink control information DCI from the network device, the DCI is scrambled by the group wireless network temporary identifier G-RNTI, the DCI is used to schedule the physical downlink shared channel PDSCH, and the DCI includes the first indication information.
  • the terminal device determines not to send HARQ-ACK information according to satisfying a first preset condition; wherein, the first preset condition includes that the first indication information takes a first preset value, and the HARQ-ACK information is used to indicate the reception of PDSCH state.
  • the terminal device receives the DCI from the network device, the DCI is scrambled by the group wireless network temporary identifier G-RNTI for scheduling PDSCH, and the DCI includes the first indication information.
  • the terminal device takes the first preset value according to the first indication information, and determines not to send the HARQ-ACK information to the network device.
  • the uplink resources occupied by HARQ feedback under multicast scheduling can be reduced, and the flexibility of multicast HARQ feedback can be increased.
  • the first indication information indicates first feedback time information, where the first feedback time information is from the time unit where the PDSCH is located to the time unit where the HARQ-ACK information is sent The number of time units; wherein, the terminal device determines not to send the HARQ-ACK information according to the first preset condition, including: the terminal device takes a first preset value according to the first indication information, and determines not to send the HARQ-ACK information.
  • ACK information Using the method of indicating feedback information can reduce uplink resources occupied by HARQ feedback under multicast scheduling, and increase the flexibility of multicast HARQ feedback.
  • the set of feedback time information includes first feedback time information
  • the set of feedback time information includes at least one piece of feedback time information
  • at least one value of the first indication information is related to the set of feedback time information
  • At least one of the feedback time information is associated with at least one of the feedback time information
  • the terminal device takes a first preset value according to the first indication information, and determines not to send the HARQ-ACK information, including: the terminal device is related to the first preset value according to the feedback time information set.
  • the value of the feedback time information associated with the setting value is the second preset value, and it is determined not to send the HARQ-ACK information.
  • the first indication information is used to instruct the terminal device to send a first resource of HARQ-ACK information
  • the first resource set includes the first resource
  • the first resource set includes N resources, wherein at least one value of the first indication information is associated with at least one resource in the resource set, and N is a positive integer greater than or equal to 1; wherein, the terminal device determines not to send the HARQ-
  • the ACK information includes: the terminal device takes a first preset value according to the first indication information, and determines not to send the HARQ-ACK information.
  • the M-th value of the first indication information is associated with the resources in the resource set, and the first-to-(M-th value of the first indication information) 1) Among the values, there is at least one value that cannot be mapped to the resource in the resource set, and M ⁇ 2; wherein, the terminal device takes the first preset value according to the first indication information, and determines not to send the HARQ-ACK
  • the information includes: the terminal device determines not to send HARQ-ACK information according to the first preset value that cannot be mapped to the resources in the resource set.
  • the i-th resource in the first resource set is associated with the i+k-th value of the first indication information, i ⁇ N, k ⁇ 1; wherein, The terminal device takes a first preset value according to the first indication information, and determines not to send the HARQ-ACK information, including: the terminal device according to the first resource associated with the first preset value in the resource set is the j th, Determine not to send HARQ-ACK information, 1 ⁇ j ⁇ k, where j and k are both positive integers.
  • Using the method of indicating feedback information can reduce uplink resources occupied by HARQ feedback under multicast scheduling, and increase the flexibility of multicast HARQ feedback.
  • the terminal device takes a first preset value according to the first indication information, and determines not to send the HARQ-ACK information, including: mapping the first preset value to the first resource Corresponding resource configuration information, the resource configuration information includes a first parameter, and the terminal device determines not to send the HARQ-ACK information according to the first parameter.
  • the terminal device determining not to send the HARQ-ACK information according to the first parameter includes: the terminal device determining not to send the HARQ-ACK information according to the value of the first parameter being a third preset value Send HARQ-ACK information.
  • the method further includes: mapping the first preset value to resource configuration information corresponding to the first resource, the resource configuration information does not include the first parameter, and the terminal device according to the The resource configuration information does not include the first parameter, and it is determined not to send the HARQ-ACK information.
  • a method for indicating feedback information is provided.
  • the execution body of the method can be either a network device or a chip applied to the network device.
  • the method includes: the network device determines The terminal equipment does not send HARQ-ACK information, which is used to indicate the receiving status of PDSCH; the network equipment sends DCI, which is scrambled by the group wireless network temporary identifier G-RNTI, which is used for scheduling PDSCH, DCI Including first indication information; wherein, the first indication information takes a first preset value, which is used to instruct the network device not to receive HARQ-ACK information.
  • the network device determines that the terminal device does not send HARQ-ACK information, where the HARQ-ACK information is used to indicate the PDSCH reception status; the network device sends DCI, and the DCI is scrambled by G-RNTI , the DCI is used to schedule PDSCH, and the DCI includes first indication information; wherein, the first indication information takes a first preset value, which is used to instruct the network device not to receive HARQ-ACK information.
  • the uplink resources occupied by HARQ feedback under multicast scheduling can be reduced, and the flexibility of multicast HARQ feedback can be increased.
  • the first indication information indicates first feedback time information, where the first feedback time information is from the time unit where the PDSCH is located to the time unit where the HARQ-ACK information is sent
  • the number of time units of , the first indication information takes a first preset value, and is used to instruct the network device not to receive HARQ-ACK information.
  • Using the method of indicating feedback information can reduce uplink resources occupied by HARQ feedback under multicast scheduling, and increase the flexibility of multicast HARQ feedback.
  • the set of feedback time information includes first feedback time information
  • the set of feedback time information includes at least one piece of feedback time information
  • at least one value of the first indication information is related to the feedback time information At least one feedback time information association in the set.
  • the first indication information takes a first preset value, which is used to instruct the network device not to receive HARQ-ACK information, including: the feedback time information in the feedback information set that is associated with the first preset value takes a second preset value value, used to indicate that the network device does not receive HARQ-ACK information.
  • the first indication information is used to indicate a first resource for the terminal device to send the HARQ-ACK information
  • the first resource set includes the first resource
  • the first resource set includes N resources
  • at least one value of the first indication information is associated with at least one resource in the resource set
  • N is a positive integer greater than or equal to 1.
  • the first indication information takes a first preset value and is used to instruct the network device not to receive HARQ-ACK information. Using the method of indicating feedback information can reduce uplink resources occupied by HARQ feedback under multicast scheduling, and increase the flexibility of multicast HARQ feedback.
  • the M-th value of the first indication information is associated with a resource in the resource set, and the first-value to (M-th value of the first indication information) 1) Among the values, there is at least one value that cannot be mapped to a resource in the resource set, and M ⁇ 2; wherein, the first indication information takes a first preset value, which is used to indicate that the network device does not receive HARQ-ACK
  • the information includes: the value of the first indication information cannot be mapped to the resources in the resource set, and is used to indicate that the network device does not receive HARQ-ACK information.
  • the i-th resource in the first resource set is associated with the i+k-th value of the first indication information, i ⁇ N, k ⁇ 1; wherein, The first indication information takes a first preset value, and is used to instruct the network device not to receive HARQ-ACK information, including: the first resource in the resource set associated with the first preset value is the jth value, which is used for Indicates that the network device does not receive HARQ-ACK information, 1 ⁇ j ⁇ k, where j and k are both positive integers.
  • Using the method of indicating feedback information can reduce uplink resources occupied by HARQ feedback under multicast scheduling, and increase the flexibility of multicast HARQ feedback.
  • the first indication information takes a first preset value, which is used to instruct the network device not to receive the HARQ-ACK information, including: the first preset value is mapped to the corresponding first resource resource configuration information, the resource configuration information includes a first parameter, and the first parameter is used to instruct the network device not to receive HARQ-ACK information.
  • the first parameter is used to instruct the network device not to receive the HARQ-ACK information, including: the first parameter is a third preset value, used to instruct the network device not to receive the HARQ-ACK information. Receive HARQ-ACK information.
  • the method further includes: mapping the first preset value to resource configuration information corresponding to the first resource, where the resource configuration information does not include a first parameter for indicating the network
  • the device does not receive HARQ-ACK information.
  • a terminal device in a third aspect, includes: a receiving unit configured to receive downlink control information DCI from a network device, where the DCI is scrambled by a group wireless network temporary identifier G-RNTI, and the DCI is used for scheduling physical Downlink shared channel PDSCH, the DCI includes first indication information.
  • the processing unit determines not to send HARQ-ACK information according to satisfying a first preset condition; wherein, the first preset condition includes that the first indication information takes a first preset value, and the HARQ-ACK information is used to indicate the PDSCH receive status.
  • the first indication information indicates first feedback time information, where the first feedback time information is from the time unit where the PDSCH is located to the time unit where the HARQ-ACK information is sent where the processing unit is specifically configured to: take a first preset value according to the first indication information, and determine not to send the HARQ-ACK information.
  • the method of indicating feedback information can reduce uplink resources occupied by HARQ feedback under multicast scheduling, and increase the flexibility of multicast HARQ feedback.
  • the set of feedback time information includes first feedback time information
  • the set of feedback time information includes at least one piece of feedback time information
  • at least one value of the first indication information is related to the set of feedback time information
  • At least one feedback time information in the set of feedback time information is associated, and the processing unit is specifically configured to: determine not to send the HARQ- ACK information.
  • the first indication information is used to indicate a first resource for the terminal device to send the HARQ-ACK information
  • the first resource set includes the first resource
  • the first resource set includes N resources
  • at least one value of the first indication information is associated with at least one resource in the resource set, and N is a positive integer greater than or equal to 1
  • the processing unit is specifically configured to: get the first indication information according to the first indication information A preset value, it is determined not to send the HARQ-ACK information.
  • the M th value of the first indication information is associated with the resources in the resource set, and the first indication information ranges from the 1 th value to the (M-th value of the first indication information) 1) Among the values, there is at least 1 value that cannot be mapped to the resource in the resource set, and M ⁇ 2; wherein, the processing unit is specifically used for: not mapped to the resource set according to the first preset value resource, determine not to send HARQ-ACK information.
  • the i-th resource in the first resource set is associated with the i+k-th value of the first indication information, i ⁇ N, k ⁇ 1; wherein, The processing unit is specifically configured to: determine not to send HARQ-ACK information according to the jth first resource associated with the first preset value in the resource set, 1 ⁇ j ⁇ k, where j and k are both positive Integer.
  • Using the method of indicating feedback information can reduce uplink resources occupied by HARQ feedback under multicast scheduling, and increase the flexibility of multicast HARQ feedback.
  • the processing unit is specifically configured to map the first preset value to resource configuration information corresponding to the first resource, where the resource configuration information includes the first parameter, and the terminal device according to The first parameter determines not to send HARQ-ACK information.
  • the processing unit is specifically configured to: determine not to send the HARQ-ACK information according to the value of the first parameter being a third preset value.
  • the processing unit is further configured to map the first preset value to resource configuration information corresponding to the first resource, and the resource configuration information does not include the first parameter, according to the The resource configuration information does not include the first parameter, and it is determined not to send the HARQ-ACK information.
  • a network device in a fourth aspect, includes: a processing unit, where the network device determines that the terminal device does not send HARQ-ACK information, where the HARQ-ACK information is used to indicate a PDSCH reception state; a sending unit, sends a downlink control Information DCI, the DCI is scrambled by the group wireless network temporary identifier G-RNTI, the DCI is used to schedule the PDSCH, and the DCI includes first indication information; wherein, the first indication information takes a first preset value and is used to indicate that the processing unit does not Receive HARQ-ACK information.
  • the first indication information indicates first feedback time information
  • the first feedback time information is from the time unit where the PDSCH is located to the time unit where the HARQ-ACK information is sent
  • the number of time units in the processing unit is specifically configured to: the first indication information takes a first preset value, which is used to instruct the processing unit not to receive HARQ-ACK information.
  • the set of feedback time information includes first feedback time information
  • the set of feedback time information includes at least one piece of feedback time information
  • at least one value of the first indication information is related to the feedback time information At least one feedback time information association in the set.
  • the processing unit is specifically configured to: the feedback time information associated with the first preset value in the feedback information set takes a value of the second preset value, which is used to instruct the processing unit not to receive HARQ-ACK information.
  • the first indication information is used to indicate a first resource for the terminal device to send the HARQ-ACK information
  • the first resource set includes the first resource
  • the first resource set includes N resources
  • at least one value of the first indication information is associated with at least one resource in the resource set
  • N is a positive integer greater than or equal to 1.
  • the first indication information takes a first preset value and is used to instruct the processing unit not to receive HARQ-ACK information. Using the method of indicating feedback information can reduce uplink resources occupied by HARQ feedback under multicast scheduling, and increase the flexibility of multicast HARQ feedback.
  • the M th value of the first indication information is associated with the resources in the resource set, and the first indication information ranges from the 1 th value to the (M-th value of the first indication information) 1) Among the values, there is at least one value that cannot be mapped to the resource in the resource set, and M ⁇ 2; wherein, the processing unit is specifically used for: the value of the first indication information cannot be mapped to the resource set resource to indicate that the processing unit does not receive HARQ-ACK information.
  • the i-th resource in the first resource set is associated with the i+k-th value of the first indication information, i ⁇ N, k ⁇ 1; wherein, The processing unit is specifically configured to: the first resource associated with the first preset value in the resource set is the jth value, which is used to instruct the processing unit not to receive HARQ-ACK information, 1 ⁇ j ⁇ k, where j , k are positive integers.
  • Using the method of indicating feedback information can reduce uplink resources occupied by HARQ feedback under multicast scheduling, and increase the flexibility of multicast HARQ feedback.
  • the processing unit is specifically configured to map the first preset value to resource configuration information corresponding to the first resource, where the resource configuration information includes a first parameter, and the first The parameter is used to instruct the processing unit not to receive HARQ-ACK information.
  • the first parameter is used to instruct the processing unit not to receive the HARQ-ACK information, including: the first parameter is a third preset value, used to instruct the processing unit not to receive the HARQ-ACK information. Receive HARQ-ACK information.
  • the method further includes: mapping the first preset value to resource configuration information corresponding to the first resource, where the resource configuration information does not include a first parameter for indicating processing The unit does not receive HARQ-ACK information.
  • a terminal device in a fifth aspect, includes at least one processor and a memory, where the at least one processor is configured to execute the method in the above first aspect or any possible implementation manner of the first aspect.
  • a terminal device in a sixth aspect, includes at least one processor and a memory, where the at least one processor is configured to execute the above second aspect or the method in any possible implementation manner of the second aspect.
  • a terminal device in a seventh aspect, includes at least one processor and an interface circuit, where the at least one processor is configured to execute the method in the above first aspect or any possible implementation manner of the first aspect.
  • a terminal device in an eighth aspect, includes at least one processor and an interface circuit, where the at least one processor is configured to execute the above second aspect or the method in any possible implementation manner of the second aspect.
  • a computer program product includes a computer program, and when executed by a processor, the computer program is used to execute the method in the first aspect or any possible implementation manner of the first aspect, Or perform the method of the second aspect or any possible implementation of the second aspect.
  • a tenth aspect provides a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and when the computer program is executed, is used to execute the first aspect or any possible implementation manner of the first aspect. method, or perform the method in the second aspect or any possible implementation manner of the second aspect.
  • FIG. 1 is a schematic structural diagram of a mobile communication system applicable to an embodiment of the present application.
  • FIG. 2 is a schematic diagram of a UE performing HARQ feedback on PUCCH resources in a multicast scenario.
  • FIG. 3 is a schematic flowchart of a method for indicating feedback information provided by an embodiment of the present application.
  • FIG. 4 is a schematic flowchart of another method for indicating feedback information provided by an embodiment of the present application.
  • FIG. 5 is a schematic flowchart of another method for indicating feedback information provided by an embodiment of the present application.
  • FIG. 6 is a schematic flowchart of another method for indicating feedback information provided by an embodiment of the present application.
  • FIG. 7 is a schematic diagram of a mapping relationship of a PUCCH resource configuration provided by an embodiment of the present application.
  • FIG. 8 is a schematic diagram of an offset value of a PUCCH resource configuration provided by an embodiment of the present application.
  • FIG. 9 is a schematic flowchart of another method for indicating feedback information provided by an embodiment of the present application.
  • FIG. 10 is a schematic diagram of a first parameter of a PUCCH resource configuration provided by an embodiment of the present application.
  • FIG. 11 is a schematic flowchart of another method for indicating feedback information provided by an embodiment of the present application.
  • FIG. 12 is a schematic diagram of another first parameter of PUCCH resource configuration provided by an embodiment of the present application.
  • FIG. 13 is a schematic diagram of a communication apparatus provided by an embodiment of the present application.
  • FIG. 14 is a schematic diagram of another communication apparatus provided by an embodiment of the present application.
  • FIG. 15 is a schematic diagram of a terminal device provided by an embodiment of the present application.
  • FIG. 16 is a schematic diagram of a network device provided by an embodiment of the present application.
  • the technical solutions of the embodiments of the present application can be applied to various communication systems, for example: a long term evolution (LTE) system, a fifth generation (5th generation, 5G) mobile communication system or a future evolved mobile communication system.
  • LTE long term evolution
  • 5th generation, 5G fifth generation
  • the mobile communication system applied in the embodiment is not limited.
  • FIG. 1 is a schematic structural diagram of a mobile communication system applicable to an embodiment of the present application.
  • the mobile communication system 100 may include a core network device 110 , a radio access network device 120 and at least one terminal device (the terminal device 130 and the terminal device 140 shown in FIG. 1 ).
  • the terminal equipment is connected to the wireless access network equipment in a wireless manner, and the wireless access network equipment is connected with the core network equipment in a wireless or wired manner.
  • the core network device and the radio access network device can be independent and different physical devices, or the functions of the core network device and the logical functions of the radio access network device can be integrated on the same physical device, or they can be one physical device. It integrates the functions of some core network equipment and some functions of the wireless access network equipment.
  • Terminal equipment can be fixed or movable.
  • FIG. 1 is just a schematic diagram, and the communication system may also include other network devices, such as wireless relay devices and wireless backhaul devices, which are not shown in FIG. 1 .
  • the embodiments of the present application do not limit the number of core network devices, wireless access network devices, and terminal devices included in the mobile communication system.
  • the terminal equipment in the mobile communication system 100 may also be referred to as a terminal terminal, user equipment (user equipment, UE), a mobile station (mobile station, MS), a mobile terminal (mobile terminal, MT), and the like.
  • the terminal device can be a mobile phone (mobile phone), a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (Virtual Reality, VR) terminal device, an augmented reality (Augmented Reality, AR) terminal device, industrial control (industrial control) wireless terminals in ), wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless terminals in smart grid, wireless terminals in transportation safety Terminals, wireless terminals in smart cities, wireless terminals in smart homes, and so on.
  • the aforementioned terminal devices and chips applicable to the aforementioned terminal devices are collectively referred to as terminal devices. It should be understood that the embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal device.
  • the wireless access network device 120 is an access device through which a terminal device wirelessly accesses the mobile communication system.
  • the wireless access network device 120 may be: a base station, an evolved node B (base station), a home base station, an access point (AP) in a WIFI system, a wireless relay node, a wireless backhaul node, A transmission point (TP) or a transmission and reception point (TRP), etc., can also be a gNB in an NR system, or can also be a component or part of a device that constitutes a base station, such as a centralized unit (centralized unit). unit, CU), distributed unit (distributed unit, DU) or base band unit (base band unit, BBU), etc.
  • wireless access network equipment is referred to as network equipment for short.
  • network equipment refers to wireless access network equipment.
  • the network device may refer to the network device itself, or may be a chip applied in the network device to complete the wireless communication processing function.
  • the terminal device or the network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer.
  • the hardware layer includes hardware such as central processing unit (CPU), memory management unit (MMU), and memory.
  • the operating system may be any one or more computer operating systems that implement business processing through processes, such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a Windows operating system.
  • the application layer includes applications such as browsers, address books, word processing software, and instant messaging software.
  • the embodiments of the present application do not specifically limit the specific structure of the execution body of the methods provided by the embodiments of the present application, as long as the program that records the codes of the methods provided by the embodiments of the present application can be executed to provide the methods provided by the embodiments of the present application.
  • the execution subject of the method provided by the embodiment of the present application may be a terminal device or a network device, or a functional module in the terminal device or network device that can call and execute a program.
  • the UE In a new radio (NR) system, the UE has three radio resource control (RRC) states: an idle state (idle), an RRC connected state and an inactive state (inactive).
  • RRC radio resource control
  • the base station can send the system information by broadcasting, and the UE completes the access after reading the message broadcasted by the base station and switches to the RRC connection state.
  • the base station delivers data services to the UE through a multicast or unicast transmission mode.
  • the base station allocates a cell-radio network temporary identifier (C-RNTI) to the UE, and the UE receives data according to the downlink control information (DCI) scrambled by the C-RNTI.
  • C-RNTI cell-radio network temporary identifier
  • DCI downlink control information
  • One-to-one data transmission is unicast. If multiple UEs receive the same data service, the base station assigns the same group of geran-radio network temporary identifiers (G-RNTI) to these UEs, and different UEs can receive DCI scrambled according to the same G-RNTI. For the same data service, this one-to-many data transmission is multicast. For a single UE, the base station can either allocate C-RNTI to it to receive unicast services, or can allocate G-RNTI to it to receive multicast services.
  • C-RNTI cell-radio network temporary identifier
  • DCI downlink control information
  • the UE determines the time slot to perform blind detection according to the bandwidth (bandwidth part, BWP) and search space (Search Space) configuration.
  • the UE determines the radio network temporary identity (RNTI) according to its own receiving requirements, and uses the determined RNTI to blindly detect the physical uplink control channel (PUCCH) in the determined time slot. If the blind detection is successful, the UE obtains the DCI, and determines the location of the downlink data and the time slot where the feedback information is located according to the indication in the DCI.
  • RNTI radio network temporary identity
  • PUCCH physical uplink control channel
  • Different data services correspond to different RNTIs. For example, unicast downlink data corresponds to C-RNTI, and multicast downlink data corresponds to G-RNTI.
  • the base station selects a G-RNTI to scramble the DCI corresponding to the multicast downlink data.
  • the UE uses the G-RNTI to blindly detect the multicast PDCCH in the downlink time slot. If the blind detection is successful, the UE obtains the corresponding multicast DCI, and determines the location of the multicast downlink data and the time slot for sending feedback information according to the relevant bit field indication in the multicast DCI.
  • This application does not limit the distinction between unicast and multicast.
  • a bit field refers to a portion of a string of bits. For example, there are 10 bits in total, and the first, second, and third bits jointly indicate a certain function, so the first to third bits are a bit field.
  • its DCI format includes formats 1_0, 1_1 and 1_2. Downlink DCI can be divided into many bit fields, and the indication functions of different bit fields are different.
  • the "Time domain resource assignment” bit field indicates the time domain information of the scheduled physical downlink shared channel (PDSCH), including the start symbol, time domain length, etc.; the "PDSCH-to-HARQ_feedback timing indicator” bit.
  • the "PUCCH resource indicator” bit field is used to indicate which uplink time slot the terminal device feeds back the HARQ-ACK information of the corresponding PDSCH; the "PUCCH resource indicator” bit field is used to indicate which PUCCH resource the terminal device selects when feeding back the HARQ-ACK information.
  • unicast adopts a hybrid automatic repeat request (HARQ) mechanism to ensure the reliability of transmission.
  • HARQ hybrid automatic repeat request
  • the UE after the UE receives the PDSCH, if the reception is correct, the UE feeds back the acknowledgement (ACK) information on the PUCCH, and if it is incorrect, it feeds back the negative acknowledgement (NACK) information on the PUCCH.
  • the time domain position of the PUCCH where the feedback information is located is indicated by the DCI.
  • the UE transmits HARQ-ACK information on the PUCCH the UE needs to confirm a PUCCH resource set, which includes multiple PUCCH resources, and confirms one PUCCH resource in the resource set to transmit the HARQ-ACK information.
  • the HARQ feedback mechanism is introduced into the NR multicast, and the base station can grasp the situation of the user's reception of multicast data through the user's feedback information, thereby improving the transmission reliability of the communication system.
  • the base station can grasp the situation of the user's reception of multicast data through the user's feedback information, thereby improving the transmission reliability of the communication system.
  • each UE performs HARQ-ACK information feedback on the PUCCH resource, which will occupy a lot of uplink resources.
  • the present application provides a method and apparatus for indicating feedback information, which can reduce uplink resources occupied by HARQ-ACK information feedback under multicast scheduling, and increase the flexibility of multicast HARQ-ACK information feedback.
  • FIG. 3 is a schematic interaction diagram of a method for indicating feedback information provided by an embodiment of the present application, and the method can be applied in the scenario shown in FIG. 1 . , of course, it can also be applied in other communication scenarios, which is not limited in this embodiment of the present application.
  • the method is described by taking a terminal device and a network device as the execution subject of the execution method as an example.
  • the execution body of the execution method may also be a chip applied to a terminal device and a chip applied to a base station.
  • the method includes:
  • the network device sends downlink control information DCI to the terminal device, where the DCI is scrambled by the G-RNTI for scheduling PDSCH, and the DCI includes the first indication information.
  • the terminal device receives the downlink control information DCI from the network device and the first indication information included in the DCI.
  • the terminal device determines not to send HARQ-ACK information to the network device according to satisfying a first preset condition, where the first preset condition is that the first indication information takes a first preset value, and the HARQ-ACK information is used for to indicate the reception status of the PDSCH.
  • the first indication information takes the first preset value to instruct the network device not to receive the HARQ-ACK information and/or the terminal device determines not to send the HARQ-ACK information according to the first indication information taking the first preset value.
  • the terminal device receives downlink control information DCI from the network device, where the DCI is scrambled by the G-RNTI for scheduling PDSCH, and the DCI includes the first indication information.
  • the terminal device takes the first preset value according to the first indication information, and determines not to send the HARQ-ACK information to the network device, which can reduce the uplink resources occupied by the HARQ-ACK information feedback under the multicast scheduling, and increase the multicast HARQ-ACK information Flexibility in feedback.
  • the network device when the network device sends downlink data to the terminal device, it needs to send the downlink data to the terminal device on the PDSCH, and the terminal device determines whether to send HARQ-ACK information to the network device according to whether the downlink data is received. Therefore, in S210, the network device sends the DCI to the terminal device, and the DCI includes the first indication information, and in S220, the terminal device determines that the first preset condition is satisfied, that is, the first indication information takes the first preset value, and determines No HARQ-ACK information is sent to the network device.
  • the first indication information may be sent to the terminal device in the form of high-level configuration information, or may also be notified to the terminal device by other forms of signaling. This application does not limit the specific form or sending method of the first indication information.
  • the G-RNTI is used to identify multicast or broadcast scheduling, and may be configured by a network device for a group of terminal devices, and other identifiers, such as M-RNTI, may also be used for multicast or broadcast scheduling. This is not limited.
  • the first indication information may be a "PDSCH-to-HARQ_feedback timing indicator” bit field or a "PUCCH resource indicator” bit field in this embodiment of the present application, and the present application does not limit the first indication information here.
  • FIG. 4 is a schematic interaction diagram of a method for indicating feedback information according to an embodiment of the present application, as shown in FIG. 4 .
  • the network device sends downlink control information DCI to the terminal device, where the DCI is scrambled by the G-RNTI for scheduling PDSCH, and the DCI includes the first indication information.
  • the terminal device receives the downlink control information DCI from the network device and the first indication information included in the DCI.
  • the terminal device takes the first preset value according to the first indication information, and determines not to send the HARQ-ACK information to the network device.
  • the first indication information takes the first preset value to instruct the network device not to receive the HARQ-ACK information and/or the terminal device determines not to send the HARQ-ACK information according to the first indication information taking the first preset value.
  • the terminal device receives the DCI sent by the network device, the DCI schedules the PDSCH in a multicast form, and the DCI includes first indication information, where the first indication information indicates the first feedback time information.
  • the first feedback time information is the number of time units from the time unit where the PDSCH is located to the time unit where the HARQ-ACK information is sent.
  • the terminal device takes a first preset value according to the first indication information, and determines not to send the HARQ-ACK information to the network device.
  • the first indication information is the "PDSCH-to-HARQ_feedback timing indicator" bit field.
  • the terminal device sends the HARQ-ACK information to the network device in the determined uplink time slot; when the value is '010', according to the value of the bit field, the terminal device determines not to send the DCI-scheduled information to the network device.
  • HARQ-ACK information corresponding to PDSCH, and the ACK/NACK information is not saved.
  • the configuration information corresponding to the first indication information in DCI format 1_0, format 1_1 and format 1_2 can all be configured by RRC, wherein the first indication information corresponds to the value in the set Configured by RRC, this application does not limit the specific value in the set.
  • the value of the first indication information included in the DCI can be displayed to instruct the terminal device not to send HARQ-ACK information, thereby reducing the uplink resources occupied by HARQ feedback under multicast scheduling.
  • the base station can flexibly configure the correspondence between the values of the first indication information of different terminal devices and the sending state of the feedback information, which increases the flexibility of the multicast HARQ feedback.
  • FIG. 5 is a schematic interaction diagram of a method for indicating feedback information according to an embodiment of the present application. As shown in Figure 5,
  • the network device sends DCI to the terminal device, where the DCI is scrambled by the G-RNTI and used for scheduling PDSCH, and the DCI includes the first indication information.
  • the terminal device receives the DCI from the network device and the first indication information included in the DCI.
  • the network device configures the corresponding relationship between the value of the first indication information and the feedback time set.
  • the network device configures the second preset value.
  • the feedback time information associated with the first preset value in the feedback time information set takes the second preset value, and determines not to send the HARQ to the network device -ACK information.
  • the feedback time information associated with the first preset value in the feedback time information set takes the second preset value, and determines not to send the HARQ-ACK. information and/or used to indicate that the network device does not receive HARQ-ACK information.
  • the terminal device receives the DCI sent by the network device, the DCI schedules the PDSCH in a multicast form, and the DCI includes first indication information, where the first indication information indicates the first feedback time information.
  • the first feedback time information is the number of time units from the time unit where the PDSCH is located to the time unit where the HARQ-ACK information is sent.
  • the network device configures the correspondence between the value of the first indication information and the feedback time set and the second preset value.
  • the feedback time information set is the same as the first preset value.
  • the value of the feedback time information associated with the value is the second preset value, and it is determined not to send the HARQ-ACK information to the network device.
  • the feedback time information set may be "dl-DataToUL-ACK” or "dl-DataToUL-ACKForDCIFormat1_2", wherein the value in the set is determined by the RRC proprietary information command configuration.
  • the DCI formats include 1_0, 1_1 and format 1_2, wherein the configuration information corresponding to the first indication information in the DCI format 1_0 scrambled by the G-RNTI can also be determined by RRC dedicated information.
  • the specific mapping rules are shown in Table 2.
  • the network device configures the second preset value, if the first indication information in the DCI, that is, the value of the "PDSCH-to-HARQ_feedback timing indicator" bit field in Table 2 corresponds to the feedback timing information set If the value is the second preset value, the terminal device does not send the HARQ-ACK information of the PDSCH scheduled by the multicast DCI, and also does not save the ACK/NACK information.
  • DCI format 1_1 or DCI format 1_0 is taken as an example, and '-1' is used as an example to represent the first preset value, wherein the first preset value may also be other values, which is not limited in this application.
  • the RRC dedicated signaling configuration dl-DataToUL-ACK is ⁇ -1, 1, 2, 3, 4, 5, 6, 7 ⁇ . If the "PDSCH-to-HARQ_feedback timing indicator" bit field in the multicast DCI is '000', it corresponds to the first value '-1' in the configured dl-DataToUL-ACK, that is, the second configured If the preset value is set, the terminal device does not send the HARQ-ACK information corresponding to the PDSCH scheduled by the multicast DCI, and does not save the ACK/NACK feedback information.
  • the configuration information corresponding to the first indication information in DCI format 1_0, format 1_1 and format 1_2 can all be configured by RRC dedicated signaling, wherein the first indication information
  • the values in the corresponding set are configured by RRC dedicated signaling, and the present application does not limit the specific values in the set.
  • bit size of the bit field of the first indication information in the G-RNTI scrambled DCI format 1_0 for multicast scheduling is fixed, that is, it cannot be configured by RRC dedicated signaling, for example, it is fixed to 3 bit, but the value corresponding to this bit field can be configured by RRC dedicated signaling.
  • RRC dedicated signaling configures this bit field (such as dl-DataToUL-ACK) as ⁇ -1,1,2,3, 4, 5, 6, 7 ⁇ , can also be configured as other values, where 1, 2, 3, 4, 5, 6, 7 respectively represent that the first feedback time information associated with the value is from the time unit where the PDSCH is located.
  • the actual number of units, that is, the value of -1 indicates that the HARQ-ACK does not need to be fed back at this time.
  • the terminal device may also receive or detect a second DCI, where the second DCI is scrambled by a unicast RNTI (such as a C-RNTI), the second DCI is also in DCI format 1_0, and the second DCI is in DCI format 1_0 It also includes the dl-DataToUL-ACK bit field, and the bit size of this bit field is also fixed, that is, it cannot be configured by RRC proprietary signaling, such as fixed to 3 bits; at the same time, the value corresponding to this bit field is not allowed Configured by RRC dedicated signaling, that is, it is also fixed, such as ⁇ 1, 2, 3, 4, 5, 6, 7, 8 ⁇ .
  • the value of the first indication information and the second preset value in the multicast DCI can be used to implicitly instruct the terminal device not to send the HARQ-ACK information, thereby reducing the occupation of HARQ feedback under multicast scheduling.
  • the base station can flexibly configure the corresponding relationship between the value of the first indication information and the feedback time information set of different UEs and the second preset value, which increases the flexibility of multicast HARQ feedback.
  • the terminal device does not send the HARQ-ACK information corresponding to the PDSCH scheduled by the multicast DCI, and does not save the ACK/NACK feedback information. .
  • FIG. 6 is a schematic interaction diagram of a method for indicating feedback information according to an embodiment of the present application, as shown in FIG. 6 .
  • the network device sends DCI to the terminal device, where the DCI is scrambled by the G-RNTI and used for scheduling PDSCH, and the DCI includes the first indication information.
  • the terminal device receives the DCI from the network device and the first indication information included in the DCI.
  • the network device configures the corresponding relationship between the value of the first indication information and the resources in the resource set.
  • sequence of S250 and S210 has no fixed sequence, which is not limited in this application.
  • the terminal device takes the first preset value according to the first indication information, and determines not to send the HARQ-ACK information to the network device.
  • the first indication information takes the first preset value to instruct the network device not to receive the HARQ-ACK information and/or the terminal device determines not to send the HARQ-ACK information according to the first indication information taking the first preset value.
  • the terminal device receives the DCI sent by the network device, the DCI schedules the PDSCH in a multicast form, and the DCI includes first indication information, where the first indication information indicates the first resource for the terminal device to send the HARQ-ACK information.
  • the first resource set includes the first resource
  • the first resource set includes N resources
  • at least one value of the first indication information is associated with at least one resource in the resource set.
  • the network device configures the correspondence between the value of the first indication information and the resources in the resource set, and the terminal device takes the first preset value according to the first indication information, and determines not to send the HARQ-ACK information to the network device.
  • the network device determines the resource set according to the number of bits. Specifically, the network device configures a maximum of 4 PUCCH resource sets for the UE, and each resource set includes a maximum of 32 PUCCH resources. Each configured PUCCH resource has a PUCCH resource ID, and the PUCCH resource ID is stored in the resource list. The terminal device may determine a PUCCH resource set according to the number of bits of the feedback information to be sent.
  • the present application does not limit the method for determining the resource set.
  • the terminal device configures the corresponding relationship between the value of the first indication information and the resources in the resource set. Specifically, the terminal device schedules the downlink data according to the "PUCCH resource indicator" bit field in the DCI (hereinafter referred to as the PRI bit field)
  • a PUCCH resource is determined, and the determination method is shown in Table 3.
  • the PUCCH resource includes a PUCCH resource ID, a physical layer resource block start index, a PUCCH resource format, and the like.
  • the DCI format scrambled by G-RNTI is 1_0
  • the PRI bit fields of format 1_1 and format 1_2 and the configuration information of PUCCH resources are all configured by RRC dedicated signaling, This application does not limit the specific mapping rules.
  • the terminal device determines not to send the HARQ-ACK information to the network device, and not to save the corresponding ACK/NACK information.
  • the terminal device determines not to send the HARQ-ACK information to the network device, and does not save the corresponding resource ID. ACK/NACK information.
  • the base station is configured with 4 PUCCH resources
  • the PUCCH resource of each UE is configured by the base station, the resource number is only for illustration, and the content of the specific resource configuration is not limited in this application.
  • the network device may also add an offset value to the resource list. If the value to which the PRI bit field in the multicast DCI is mapped is an invalid value, the terminal device determines not to send the HARQ-ACK information. Specifically, the i-th resource in the resource set is taken from the i+k-th resource in the PRI bit field. Value correlation, i ⁇ N, k ⁇ 1, the terminal device determines not to send HARQ-ACK information according to the first resource associated with the value of the PRI bit field in the resource set is the jth, 1 ⁇ j ⁇ k, where Both j and k are positive integers.
  • the base station is configured with 4 PUCCH resources
  • the PUCCH resource ID is ⁇ 1, 2, 3, 4 ⁇
  • the original resource list should be ⁇ 1, 2, 3, 4 ⁇
  • the offset value configured by the base station is 4
  • the first 4 values in the resource list need to be filled with specific values in the original resource list due to the existence of the offset value, such as '-1', and the resource list at this time is ⁇ - 1,-1,-1,-1,1,2,3,4 ⁇ .
  • the HARQ-ACK information of the PDSCH scheduled by the multicast DCI is sent on the PUCCH resource whose ID is 1.
  • the network device can implicitly instruct the terminal device not to send HARQ-ACK information through the PRI bit field in the multicast DCI and a resource configuration method, thereby reducing the uplink occupied by HARQ feedback under multicast scheduling resource.
  • the network device can flexibly configure the PUCCH resources corresponding to the PRI bit fields of different UEs, which increases the flexibility of multicast HARQ-ACK information feedback.
  • FIG. 9 is a schematic interaction diagram of a method for indicating feedback information according to an embodiment of the present application. As shown in Figure 9,
  • the network device sends DCI to the terminal device, where the DCI is scrambled by the G-RNTI and used for scheduling PDSCH, and the DCI includes the first indication information.
  • the terminal device receives the DCI from the network device and the first indication information included in the DCI.
  • the network device configures the correspondence between the value of the first indication information and the resources in the resource set, and the first parameter.
  • the resource configuration information corresponding to the mapped resource includes the first parameter, which determines not to send the HARQ-ACK information and/or is used to instruct the network device not to receive the HARQ-ACK information.
  • HARQ-ACK information when the terminal device takes the first preset value according to the first indication information, the resource configuration information corresponding to the mapped resource includes the first parameter, which determines not to send the HARQ-ACK information and/or is used to instruct the network device not to receive the HARQ-ACK information.
  • the terminal device receives the DCI sent by the network device, the DCI schedules the PDSCH in a multicast form, and the DCI includes first indication information, where the first indication information indicates the first resource for the terminal device to send the HARQ-ACK information.
  • the first resource set includes the first resource, and the first resource set includes N resources, wherein at least one value of the first indication information is associated with at least one resource in the resource set.
  • the network device configures the correspondence between the value of the first indication information and the resources in the resource set and the first parameter, and the terminal device determines not to send HARQ-ACK information to the network device according to the first parameter.
  • the network device determines the resource set according to the number of bits. Specifically, the network device configures a maximum of 4 PUCCH resource sets for the UE, and each resource set includes a maximum of 32 PUCCH resources. Each configured PUCCH resource has a PUCCH resource ID, and the PUCCH resource ID is stored in the resource list, and the method for determining the resource set is not described here in this application.
  • the network device configures first indication information, where the first indication information is the PRI bit field, and the network device configures the corresponding relationship between the value of the PRI bit field and the resources in the resource set and the first parameter, specifically, the terminal device
  • a PUCCH resource is determined according to the PRI bit field in the DCI for scheduling downlink data, and the determination method is shown in Table 4.
  • the PUCCH resource includes a PUCCH resource ID, a physical layer resource block start index, a PUCCH resource format, and the like.
  • the DCI format scrambled by the G-RNTI is 1_0
  • the PRI bit field of format 1_1 and format 1_2 and the configuration information of the PUCCH resource are configured by RRC dedicated signaling.
  • the application does not limit the specific mapping rules.
  • the terminal device determines a PUCCH resource set according to the number of bits, and in this PUCCH resource set, the base station configures PUCCH resources.
  • the terminal device determines not to send the HARQ-ACK information to the network device according to the first parameter included in the PUCCH resource.
  • the terminal device sends the HARQ-ACK information of the PDSCH scheduled by the multicast DCI on the PUCCH resource whose PUCCH resource ID is 2.
  • FIG. 11 is a schematic interaction diagram of a method for indicating feedback information according to an embodiment of the present application, as shown in FIG. 11 .
  • the network device sends DCI to the terminal device, where the DCI is scrambled by the G-RNTI and used for scheduling PDSCH, and the DCI includes the first indication information.
  • the terminal device receives the DCI from the network device and the first indication information included in the DCI.
  • the network device configures the correspondence between the value of the first indication information and the resources in the resource set, the first parameter, and the third preset value.
  • the resource configuration information corresponding to the mapped resource includes the first parameter, and the terminal device determines not to send the HARQ- ACK information and/or used to indicate that the network device does not receive HARQ-ACK information.
  • the terminal device receives the DCI sent by the network device, the DCI schedules the PDSCH in a multicast form, and the DCI includes first indication information, where the first indication information indicates the first resource for the terminal device to send the HARQ-ACK information.
  • the first resource set includes the first resource
  • the first resource set includes N resources
  • at least one value of the first indication information is associated with at least one resource in the resource set.
  • the network device configures the corresponding relationship between the value of the first indication information and the resources in the resource set, the first parameter, and the third preset value, and the terminal device determines not to send the network
  • the device sends HARQ-ACK information.
  • the terminal device determines a PUCCH resource set, and in this PUCCH resource set, the base station configures PUCCH resources.
  • the terminal device determines not to send the HARQ-ACK information to the network device according to the fact that the PUCCH resource includes the first parameter and the first parameter is equal to the third preset value.
  • the UE determines a PUCCH resource set, and in this PUCCH resource set, the base station configures PUCCH resources.
  • This embodiment of the present application can implicitly instruct the terminal device not to send HARQ-ACK information through the PRI bit field, the first parameter and the third preset value in the multicast DCI, thereby reducing the uplink resources occupied by HARQ feedback under multicast scheduling .
  • the base station can flexibly configure the first parameter and the third preset value in the PUCCH resources of different UEs, which increases the flexibility of the multicast HARQ feedback.
  • the terminal device receives the multicast DCI and the corresponding scheduled multicast downlink data
  • the base station configures the second parameter to the terminal device, and the second parameter or the value of the second parameter is used to enable or disable the UE's availability. Function to selectively send HARQ-ACK information.
  • the UE takes the fourth preset value according to the second parameter or the second parameter to enable or disable the UE. Function to selectively send HARQ-ACK information. This means that the UE can take the first preset value according to the first indication information to determine whether to send the HARQ-ACK information, or the UE cannot determine whether to send the HARQ-ACK information according to the first preset value of the first indication information.
  • the first indication information may be the first bit field existing in the multicast DCI, or the "PDSCH-to-HARQ_feedback timing indicator” bit field existing in the DCI, or the "PUCCH” existing in the DCI resource indicator” bit field, which is not limited in this application.
  • the first bit field in the multicast DCI can be used to explicitly indicate whether the UE sends the multicast downlink data corresponding to HARQ-ACK information; if the base station does not configure the second parameter for the UE or configures the second parameter but the value of the second parameter is not the fourth preset value, the first bit field in the DCI cannot be used for display Indicates whether the UE sends the HARQ-ACK information corresponding to the multicast downlink data.
  • the base station configures the second parameter for the UE or the configured second parameter is the fourth preset value, the "PDSCH-to-HARQ_feedback timing indicator" bit field and the "PUCCH resource indicator” bit in the multicast DCI
  • it can be used to explicitly or implicitly indicate whether the UE sends the HARQ-ACK information corresponding to the DCI-scheduled multicast downlink data
  • the base station does not configure the second parameter for the UE or configures the first parameter Two parameters and the value of the second parameter is not the fourth preset value, then the "PDSCH-to-HARQ_feedback timing indicator” bit field and the "PUCCH resource indicator” bit field in the DCI, as described in the previous embodiments, cannot be It can be used to explicitly or implicitly indicate whether the UE sends HARQ-ACK information corresponding to the DCI-scheduled multicast downlink data;
  • the above-mentioned base station configures the second parameter for the UE.
  • the above steps may not be performed.
  • the UE may directly determine not to send the HARQ-ACK information by taking the first preset value according to the first indication information.
  • the base station configures the second parameter or the value of the second parameter for the UE, and enables or disables the function of the UE to optionally send HARQ-ACK information, thereby increasing the flexibility of sending HARQ-ACK information of multicast downlink data.
  • first, second, etc. are only intended to represent a plurality of objects that are different.
  • first preset value and the second preset value are only to represent different numerical values, so the above-mentioned first, second, etc. should not impose any limitations on the embodiments of the present application.
  • FIG. 13 shows a schematic block diagram of a terminal device 300 according to an embodiment of the present application.
  • the terminal device 300 may correspond to the terminal device described in the above method, or may be a chip or component applied to the terminal device, and the terminal device 300 Each unit in the above method is respectively used to perform each action or processing process performed by the terminal device in the above method.
  • the terminal device 300 may include: a communication unit 310 and a processing unit 320 .
  • the communication unit 310 is used for the terminal device to receive the DCI from the network device, and the DCI includes the first indication information
  • the processing unit 320 is used by the terminal device to determine not to send HARQ-ACK information according to a first preset condition, where the first preset condition includes that the first indication information takes a first preset value, the HARQ-ACK information Used to indicate the reception status of PDSCH.
  • FIG. 14 shows a schematic block diagram of a network device 400 according to an embodiment of the present application.
  • the network device 400 may correspond to the network device described in the above method, or may be a chip or component applied to the network device, and the network device 400 Each module or unit in the above method is respectively used to perform each action or processing process performed by the network device in the above method.
  • the network device 400 may include: a communication unit 410 and a processing unit 420 .
  • the communication unit 410 is used for the network device to send DCI to the terminal device, where the DCI includes the first indication information;
  • the processing unit 420 is configured to configure a first preset condition, where the first preset condition includes that the first indication information takes a first preset value, and the network device determines not to receive HARQ-ACK information according to satisfying the first preset condition, wherein , the HARQ-ACK information is used to indicate the reception status of the PDSCH.
  • a unit in any of the above apparatuses may be one or more integrated circuits configured to implement the above methods, eg, one or more application specific integrated circuits (ASICs), or, one or more A plurality of digital signal processors (DSPs), or, one or more field programmable gate arrays (FPGAs), or a combination of at least two of these integrated circuit forms.
  • ASICs application specific integrated circuits
  • DSPs digital signal processors
  • FPGAs field programmable gate arrays
  • a unit in the apparatus can be implemented in the form of a processing element scheduler
  • the processing element can be a general-purpose processor, such as a central processing unit (central processing unit, CPU) or other processors that can invoke programs.
  • CPU central processing unit
  • these units can be integrated together and implemented in the form of a system-on-a-chip (SOC).
  • FIG. 15 shows a schematic structural diagram of a terminal device provided by an embodiment of the present application. It may be the terminal device in the above embodiment, and is used to implement the operation of the terminal device in the above embodiment.
  • the terminal device includes: an antenna 510 , a radio frequency device 520 , and a signal processing part 530 .
  • the antenna 510 is connected to the radio frequency device 520 .
  • the radio frequency device 520 receives the information sent by the network device through the antenna 510, and sends the information sent by the network device to the signal processing part 530 for processing.
  • the signal processing part 530 processes the information of the terminal equipment and sends it to the radio frequency device 520
  • the radio frequency device 520 processes the information of the terminal equipment and sends it to the network equipment through the antenna 510 .
  • the signal processing part 530 can include a modulation and demodulation subsystem, which is used to implement the processing of each communication protocol layer of the data; it can also include a central processing subsystem, which is used to implement the processing of the terminal operating system and the application layer; in addition, it can also include Other subsystems, such as multimedia subsystem, peripheral subsystem, etc., wherein the multimedia subsystem is used to realize the control of the terminal device camera, screen display, etc., and the peripheral subsystem is used to realize the connection with other devices.
  • the modem subsystem can be an independent chip.
  • the above apparatus for a terminal may be located in the modem subsystem.
  • the modem subsystem may include one or more processing elements 531, including, for example, a host CPU and other integrated circuits.
  • the modulation and demodulation subsystem may also include a storage element 532 and an interface circuit 533 .
  • the storage element 532 is used for storing data and programs, but the program for executing the method performed by the terminal device in the above methods may not be stored in the storage element 532, but in a memory outside the modulation and demodulation subsystem.
  • Interface circuit 533 is used to communicate with other subsystems.
  • the above apparatus for terminal equipment may be located in a modulation and demodulation subsystem, and the modulation and demodulation subsystem may be implemented by a chip, and the chip includes at least one processing element and an interface circuit, wherein the processing element is used to execute any one of the execution of the above terminal equipment.
  • the interface circuit is used to communicate with other devices.
  • the unit for the terminal device to implement each step in the above method may be implemented in the form of a processing element scheduler.
  • an apparatus for a terminal device includes a processing element and a storage element, and the processing element calls the program stored in the storage element to Execute the method executed by the terminal in the above method embodiments.
  • the storage element may be a storage element in which the processing element is on the same chip, that is, an on-chip storage element.
  • the program for executing the method performed by the terminal device in the above method may be in a storage element on a different chip from the processing element, that is, an off-chip storage element.
  • the processing element calls or loads the program from the off-chip storage element to the on-chip storage element, so as to call and execute the method executed by the terminal in the above method embodiments.
  • the unit for the terminal device to implement each step in the above method may be configured as one or more processing elements, and these processing elements are provided on the modulation and demodulation subsystem, and the processing element here may be an integrated circuit, For example: one or more ASICs, or, one or more DSPs, or, one or more FPGAs, or a combination of these types of integrated circuits. These integrated circuits can be integrated together to form chips.
  • the units of the terminal device for implementing each step in the above method may be integrated together and implemented in the form of a system-on-a-chip (SOC), and the SOC chip is used to implement the above method.
  • SOC system-on-a-chip
  • FIG. 16 is a schematic structural diagram of a network device provided by an embodiment of the present application. It is used to realize the operation of the network device in the above embodiment.
  • the network device includes: an antenna 601 , a radio frequency device 602 , and a baseband device 603 .
  • the antenna 601 is connected to the radio frequency device 602 .
  • the radio frequency device 602 receives the information sent by the terminal through the antenna 601, and sends the information sent by the terminal device to the baseband device 603 for processing.
  • the baseband device 603 processes the information of the terminal and sends it to the radio frequency device 602
  • the radio frequency device 602 processes the information of the terminal device and sends it to the terminal through the antenna 601 .
  • Baseband device 603 may include one or more processing elements 6031, including, for example, a host CPU and other integrated circuits.
  • the baseband device 603 may further include a storage element 6032 and an interface 6033, the storage element 6032 is used for storing programs and data; the interface 6033 is used for exchanging information with the radio frequency device 602, such as a common public radio interface (common public radio interface) , CPRI).
  • the above apparatus for network equipment may be located in the baseband apparatus 603, for example, the above apparatus for network equipment may be a chip on the baseband apparatus 603, the chip including at least one processing element and an interface circuit, wherein the processing element is used to execute the above network Each step of any one of the methods performed by the device, the interface circuit is used to communicate with other devices.
  • the unit for the network device to implement each step in the above method may be implemented in the form of a processing element scheduler, for example, an apparatus for a network device includes a processing element and a storage element, and the processing element calls the program stored in the storage element to The method performed by the network device in the above method embodiment is performed.
  • the storage element may be a storage element in which the processing element is located on the same chip, that is, an on-chip storage element, or a storage element that is located on a different chip from the processing element, that is, an off-chip storage element.
  • the unit of the network device implementing each step in the above method may be configured as one or more processing elements, these processing elements are provided on the baseband device, and the processing elements here may be integrated circuits, for example: a or ASICs, or one or more DSPs, or one or more FPGAs, or a combination of these types of integrated circuits. These integrated circuits can be integrated together to form chips.
  • the units of the network device for implementing each step in the above method may be integrated together and implemented in the form of a system-on-chip.
  • the baseband device includes the SOC chip, which is used to implement the above method.
  • the terminal equipment and network equipment in each of the above apparatus embodiments may completely correspond to the terminal equipment or network equipment in the method embodiments, and corresponding steps are performed by corresponding modules or units.
  • the receiving unit may be an interface circuit used by the chip to receive signals from other chips or devices.
  • the above unit for sending is an interface circuit of the device, used to send signals to other devices, for example, when the device is implemented in the form of a chip, the sending unit is the chip used to send signals to other chips or devices interface circuit.
  • An embodiment of the present application further provides a communication system, where the communication system includes: the above-mentioned terminal device and the above-mentioned network device.
  • the embodiments of the present application further provide a computer-readable medium for storing computer program codes, where the computer program includes instructions for executing the method for transmitting feedback information of the embodiments of the present application in the above method.
  • the readable medium may be a read-only memory (read-only memory, ROM) or a random access memory (random access memory, RAM), which is not limited in this embodiment of the present application.
  • the present application also provides a computer program product, the computer program product includes instructions, when the instructions are executed, to cause the terminal device and the network device to perform operations corresponding to the terminal device and the network device in the above method.
  • Embodiments of the present application further provide a system chip, which includes: a processing unit and a communication unit, where the processing unit may be, for example, a processor, and the communication unit may be, for example, an input/output interface, a pin, or a circuit.
  • the processing unit can execute computer instructions, so that the chip in the communication device executes any one of the feedback information transmission methods provided by the above embodiments of the present application.
  • the computer instructions are stored in a storage unit.
  • the storage unit is a storage unit in the chip, such as a register, a cache, etc.
  • the storage unit can also be a storage unit located outside the chip in the terminal, such as a read-only memory (ROM). ) or other types of static storage devices that can store static information and instructions, random access memory (RAM), etc.
  • the processor mentioned in any one of the above may be a CPU, a microprocessor, an ASIC, or one or more integrated circuits for controlling the program execution of the above-mentioned transmission method of feedback information.
  • the processing unit and the storage unit can be decoupled, respectively disposed on different physical devices, and connected in a wired or wireless manner to implement the respective functions of the processing unit and the storage unit, so as to support the system chip to implement the above embodiments various functions in .
  • the processing unit and the memory may also be coupled on the same device.
  • the memory in this 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 may be ROM, programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), electrically erasable programmable read-only memory (electrically EPROM) , EEPROM) or flash memory.
  • Volatile memory can be RAM, which acts as an external cache.
  • RAM random access memory
  • DRAM dynamic random access memory
  • SDRAM synchronous dynamic random access memory
  • double data rate Synchronous dynamic random access memory double data rate SDRAM, DDR SDRAM
  • enhanced synchronous dynamic random access memory enhanced SDRAM, ESDRAM
  • synchronous link dynamic random access memory direct memory bus random access memory Access memory
  • direct rambus RAM direct rambus RAM
  • uplink and downlink appearing in this application are used to describe the direction of data/information transmission in specific scenarios.
  • the “uplink” direction generally refers to the direction in which data/information is transmitted from the terminal to the network side, or the distribution The direction of transmission from the centralized unit to the centralized unit.
  • the “downlink” direction generally refers to the direction of data/information transmission from the network side to the terminal, or the direction of transmission from the centralized unit to the distributed unit. It can be understood that “uplink” and “downlink” ” is only used to describe the transmission direction of data/information, and the specific starting and ending equipment of the data/information transmission is not limited.
  • the methods in the embodiments of the present application may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • software When implemented in software, it can be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer programs or instructions.
  • the computer may be a general purpose computer, special purpose computer, computer network, or other programmable device.
  • the computer program or instructions may be stored in or transmitted over a computer-readable storage medium.
  • the computer-readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server that integrates one or more available media.
  • the available media can be magnetic media, such as floppy disks, hard disks, magnetic tapes; optical media, such as CD-ROM, DVD; and semiconductor media, such as solid state disks (SSD), random Access memory (random access memory, RAM), read-only memory (read-only memory, ROM) and registers, etc.
  • magnetic media such as floppy disks, hard disks, magnetic tapes
  • optical media such as CD-ROM, DVD
  • semiconductor media such as solid state disks (SSD), random Access memory (random access memory, RAM), read-only memory (read-only memory, ROM) and registers, etc.
  • SSD solid state disks
  • RAM random Access memory
  • read-only memory read-only memory
  • registers etc.
  • the disclosed system, apparatus and method may be implemented in other manners.
  • the apparatus embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented.
  • the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

Abstract

La présente demande concerne un procédé et un appareil d'indication d'informations de rétroaction, ledit procédé comprenant les étapes suivantes : un équipement terminal reçoit des informations de commande de liaison descendante (DCI), lesdites DCI étant brouillées par un identifiant temporaire de réseau radio de groupe (G-RNTI), lesdites DCI étant utilisées pour planifier un canal physique partagé descendant (PDSCH), les DCI comprenant de premières informations d'indication; en fonction de la satisfaction d'une première condition prédéfinie, l'équipement terminal décide de ne pas envoyer des informations HARQ-ACK de requête automatique de répétition hybride; la première condition prédéfinie comprenant les premières informations d'indication utilise une première valeur prédéterminée, lesdites informations HARQ-ACK étant utilisées pour indiquer l'état de réception du PDSCH. Le procédé et l'appareil d'indication d'informations de rétroaction, fournis par la présente demande, peuvent réduire les ressources de liaison montante occupées par une rétroaction HARQ dans une planification de multidiffusion, augmentant la flexibilité de rétroaction HARQ de multidiffusion.
PCT/CN2020/121707 2020-10-16 2020-10-16 Procédé et appareil d'indication d'informations de rétroaction WO2022077522A1 (fr)

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PCT/CN2020/121707 WO2022077522A1 (fr) 2020-10-16 2020-10-16 Procédé et appareil d'indication d'informations de rétroaction
PCT/CN2021/115101 WO2022078082A1 (fr) 2020-10-16 2021-08-27 Procédé et appareil d'indication d'informations de rétroaction
CN202180065716.8A CN116508277A (zh) 2020-10-16 2021-08-27 一种指示反馈信息的方法和装置

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CN117014109A (zh) * 2022-04-25 2023-11-07 华为技术有限公司 一种通信方法及装置
CN117527153A (zh) * 2022-07-25 2024-02-06 维沃移动通信有限公司 反馈资源确定方法、装置、通信设备、系统及存储介质

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