WO2022077522A1

WO2022077522A1 - Method and apparatus for indicating feedback information

Info

Publication number: WO2022077522A1
Application number: PCT/CN2020/121707
Authority: WO
Inventors: 苏桐; 官磊
Original assignee: 华为技术有限公司
Priority date: 2020-10-16
Filing date: 2020-10-16
Publication date: 2022-04-21
Also published as: CN116508277A; WO2022078082A1

Abstract

Provided by the present application are a method and apparatus for indicating feedback information, said method comprising: a terminal device receiving downlink control information (DCI), said DCI being scrambled by a group radio network temporary identifier (G-RNTI), said DCI being used for scheduling a physical downlink shared channel (PDSCH). the DCI comprising first indication information; according to the satisfaction of a first preset condition, the terminal device determining not to send hybrid automatic repeat request HARQ-ACK information; the first preset condition comprising the first indication information taking a first predetermined value, said HARQ-ACK information being used for indicating the reception status of the PDSCH. The method and apparatus for indicating feedback information, provided by the present application, can reduce the uplink resources occupied by HARQ feedback under multicast scheduling, increasing the flexibility of multicast HARQ feedback.

Description

A method and apparatus for indicating feedback information

technical field

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.

Background technique

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). For downlink data transmission, hybrid automatic repeat request (HARQ) is an efficient transmission mechanism. On the one hand, 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.

Currently in NR, unicast adopts HARQ mechanism to ensure the reliability of transmission. Take downlink data transmission as an example. 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). When 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. However, when the number of users scheduled for multicast scheduling is large, each UE performs HARQ feedback on PUCCH resources, which will occupy a lot of uplink resources.

Therefore, for NR multicast, reducing the occupation of uplink resources by HARQ feedback is an urgent problem to be solved.

SUMMARY OF THE INVENTION

In view of this, 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.

In the method for indicating feedback information provided by the first aspect, 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.

In a possible implementation manner of the first aspect, 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.

In a possible implementation manner of the first aspect, 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, and 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, and 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. 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.

In a possible implementation manner of the first aspect, 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, 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, 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.

In a possible implementation manner of the first aspect, 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.

In a possible implementation manner of the first aspect, 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.

In a possible implementation manner of the first aspect, 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.

In a possible implementation manner of the first aspect, 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.

In a possible implementation manner of the first aspect, 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.

In a second aspect, 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. Taking the execution body as a network device as an example, 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.

In the method for indicating feedback information provided by the second aspect, 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.

In a possible implementation manner of the second aspect, 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.

In a possible implementation manner of the second aspect, 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, and 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. 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.

In a possible implementation manner of the second aspect, 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, 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, and 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.

In a possible implementation manner of the second aspect, 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.

In a possible implementation manner of the second aspect, 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.

In a possible implementation manner of the second aspect, 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.

In a possible implementation manner of the second aspect, 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.

In a possible implementation manner of the second aspect, 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.

In a third aspect, a terminal device is provided, the terminal device 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.

In a possible implementation manner of the third aspect, 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. 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.

In a possible implementation manner of the third aspect, 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, and 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. 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.

In a possible implementation manner of the third aspect, 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, 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, and N is a positive integer greater than or equal to 1; wherein, 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.

In a possible implementation manner of the third aspect, 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.

In a possible implementation manner of the third aspect, 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.

In a possible implementation manner of the third aspect, 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.

In a possible implementation manner of the third aspect, 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.

In a possible implementation manner of the third aspect, 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.

In a fourth aspect, a network device is provided, the network device 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.

In a possible implementation manner of the fourth aspect, the first indication information indicates first feedback time information, and 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. 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.

In a possible implementation manner of the fourth aspect, 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, and 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. 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.

In a possible implementation manner of the fourth aspect, 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, 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, and 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.

In a possible implementation manner of the fourth aspect, 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.

In a possible implementation manner of the fourth aspect, 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.

In a possible implementation manner of the fourth aspect, 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.

In a possible implementation manner of the fourth aspect, 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.

In a possible implementation manner of the fourth aspect, 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.

In a fifth aspect, a terminal device is provided, the apparatus 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.

In a sixth aspect, a terminal device is provided, the apparatus 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.

In a seventh aspect, a terminal device is provided, the apparatus 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.

In an eighth aspect, a terminal device is provided, the apparatus 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.

In a ninth aspect, a computer program product is provided, the 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.

Description of drawings

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.

Detailed ways

The technical solutions in the present application will be described below with reference to the accompanying drawings.

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. 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. As shown in FIG. 1 , 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. In this application, 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.

In the mobile communication system 100, 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. It should be understood that, in the embodiments of the present application, the specific technology and specific device form adopted by the wireless access network device are not limited. In this application, wireless access network equipment is referred to as network equipment for short. Unless otherwise specified, in this application, network equipment refers to wireless access network equipment. In this application, 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.

In this embodiment of the present application, 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. In addition, 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. For example, 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.

To facilitate understanding of the embodiments of the present application, several concepts involved in the present application are briefly introduced below.

Unicast and Multicast:

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). When the UE is in the idle state, 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. For the UE in the RRC connected state, since the services of different UEs may be different, 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. 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.

In the NR system, 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. Different data services correspond to different RNTIs. For example, unicast downlink data corresponds to C-RNTI, and multicast downlink data corresponds to G-RNTI. Taking the multicast downlink data as an example, 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.

Bit field:

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. For the DCI scheduling multicast downlink data, 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. For example, 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.

In NR, unicast adopts a hybrid automatic repeat request (HARQ) mechanism to ensure the reliability of transmission. In the following example, 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. When 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. However, when the number of users scheduled for multicast scheduling is large, as shown in FIG. 2 , each UE performs HARQ-ACK information feedback on the PUCCH resource, which will occupy a lot of uplink resources.

Based on the above problems, 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.

The following describes the method for transmitting feedback information provided by the present application in detail with reference to FIG. 3 . 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.

It should be understood that, in the embodiments 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. As an example but not a limitation, 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.

As shown in Figure 3, the method includes:

S210 , 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. Correspondingly, the terminal device receives the downlink control information DCI from the network device and the first indication information included in the DCI.

S220: 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.

It should be understood that 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.

In the method for indicating feedback information provided by the present application, 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.

Specifically, 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.

It should be understood that 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.

It should also be understood that 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.

Optionally, as an embodiment, 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 .

S240, 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.

Specifically, 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. Wherein, 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 following is an example. As shown in Table 1, the first indication information is the "PDSCH-to-HARQ_feedback timing indicator" bit field. When the "PDSCH-to-HARQ_feedback timing indicator" bit field in the DCI is '000', this When 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.

It should be understood that, for the DCI of multicast scheduling downlink data, 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.

Table 1. Correspondence between PDSCH-to-HARQ_feedback timing indicator bit field and feedback information sending status

Therefore, in this embodiment, 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.

Optionally, as an embodiment, 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,

S210: 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. Correspondingly, the terminal device receives the DCI from the network device and the first indication information included in the DCI.

S230, the network device configures the corresponding relationship between the value of the first indication information and the feedback time set.

S231, the network device configures the second preset value.

S222, when the terminal device takes the first preset value according to the first indication 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 to the network device -ACK information.

It should be understood that when the terminal device takes the first preset value according to the first indication 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.

Specifically, 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. When the terminal device obtains the first preset value according to the first indication information, 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.

In S230, there is a corresponding relationship between the value of the first indication information and the feedback time set, and 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. For the DCI scheduling multicast downlink data, 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.

In S231, 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. In this application, 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 following example illustrates that 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.

It should be understood that for the DCI of multicast scheduling downlink data, 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.

Optionally, the 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. For example, 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 number of time units between the time unit where the HARQ-ACK information is sent, and the value of '-1' does not relate to the time unit from the time unit where the PDSCH is located to the time unit where the HARQ-ACK information is sent. 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.

Optionally, 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}.

Table 2. Correspondence between PDSCH-to-HARQ_feedback timing indicator bit field and number of time slots

Therefore, in this embodiment, 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. Uplink resources. 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.

It should also be understood that if there is no "PDSCH-to-HARQ_feedback timing indicator" bit field in the multicast DCI, 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. .

Optionally, as an embodiment, 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 .

S250, the network device configures the corresponding relationship between the value of the first indication information and the resources in the resource set.

Optionally, the sequence of S250 and S210 has no fixed sequence, which is not limited in this application.

Specifically, 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, and 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.

It should be understood that 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. For example, if the number of bits of the feedback information<=2, the first PUCCH resource set is selected; if 2<the number of bits of the feedback information<= N2, select the second PUCCH resource set; if N2<number of bits of feedback information<=N3, select the third PUCCH resource set; if N3<number of bits of feedback information<=1706, select the fourth PUCCH resource set, The present application does not limit the method for determining the resource set.

In S250, 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.

Table 3. Mapping relationship between PUCCH resource indicator and PUCCH resource in resource set

It should be understood that for the DCI scheduling multicast downlink data, 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.

In S240, according to the value of the first indication information, that is, the value of the PRI bit field, the terminal device determines not to send the HARQ-ACK information to the network device, and not to save the corresponding ACK/NACK information. In S240, if the PRI bit field of the terminal device in the multicast DCI has no corresponding resource ID, that is, the PRI bit field cannot be mapped to the resource, 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 following is an example of the case where the PRI bit field cannot be mapped to resources. If the base station is configured with 4 PUCCH resources, the PUCCH resource IDs are {1, 2, 3, 4}, and these PUCCH resources correspond to PRI{'001',' 011','101','111'}. If the value of the PRI in the multicast DCI is '000', there is no PUCCH resource corresponding to PRI='000', so the terminal device does not send the HARQ-ACK information of the PDSCH scheduled by the multicast DCI. If the value of the PRI in the multicast DCI is '111', there are PUCCH resources corresponding to PRI='111', so the terminal equipment is in the PUCCH resources corresponding to PRI='111', that is, the PUCCH resources with the PUCCH resource ID of 4 Send the HARQ-ACK information of the PDSCH scheduled by the multicast DCI on the

It should be understood that the mapping relationship between the value of the PRI bit field of different UEs and the PUCCH resource is specifically configured by the base station. As shown in Figure 7, UE1, UE2, and UE3 all receive multicast downlink data, and the base station configures three PUCCH resources for each of the three UEs, but the mapping relationship between the value of the PRI bit field of each UE and the PUCCH resources is a specific configuration of. Specifically, when the value of PRI in the DCI for scheduling multicast downlink data is "01", UE1, according to its specific mapping relationship, the PUCCH resource corresponding to PRI="01" is PUCCH resource 1, so UE1 is in PUCCH resource 1 Send the HARQ-ACK information corresponding to the multicast downlink data. According to its specific mapping relationship, UE2 has no PUCCH resource corresponding to PRI=“01”, so UE2 does not send HARQ-ACK information corresponding to the multicast downlink data. According to the specific mapping relationship of UE3, the PUCCH resource corresponding to PRI=“01” is PUCCH resource 2, so UE3 sends HARQ-ACK information corresponding to the multicast downlink data on PUCCH resource 2. 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.

Optionally, in S250, when configuring the resource set, 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.

An example is given below. As shown in Figure 8, if 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}, However, since 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}. If the value of PRI in the multicast DCI is '000', the resource ID corresponding to PRI='000' in the resource list is '-1', which is not the resource ID of the configured valid PUCCH resource, so the terminal device does not send The HARQ-ACK information of the PDSCH scheduled by the multicast DCI. If the value of PRI in the multicast DCI is '100', the resource ID corresponding to PRI='100' in the resource list is '1', which is the resource ID of the configured valid PUCCH resource, so the terminal device is in the PUCCH resource The HARQ-ACK information of the PDSCH scheduled by the multicast DCI is sent on the PUCCH resource whose ID is 1.

In this embodiment of the present application, 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.

Optionally, as an embodiment, 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,

S251, 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.

S241: When the resource configuration information corresponding to the resource mapped by the terminal device according to the value of the first indication information includes the first parameter, the terminal device determines not to send HARQ-ACK information to the network device according to the first parameter.

It should be understood that 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. HARQ-ACK information.

Specifically, 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.

Examples are given below. 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.

In S251, 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.

Table 4. Mapping relationship between PUCCH resource indicator and PUCCH resource in resource set

It should be understood that for the DCI scheduling multicast downlink data, 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.

In S241, 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 following is an example to illustrate, if the base station is configured with 4 PUCCH resources, and the PUCCH resource IDs are {1, 2, 3, 4}, as shown in Figure 10, if the value of PRI in the multicast DCI is '000', then The resource ID corresponding to PRI='000' in the resource list is '1', and the first parameter exists in the PUCCH resource whose resource ID is '1', then the terminal device does not send the HARQ- ACK information. If the value of PRI in the multicast DCI is '001', the resource ID corresponding to PRI='001' in the resource list is '2', and the PUCCH resource with the resource ID of '2' does not exist the first parameter, at this time, 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.

Optionally, as an embodiment, 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 .

S251, 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.

S242: When the resource configuration information corresponding to the resource mapped by the terminal device according to the value of the first indication information includes the first parameter, the terminal device determines not to send the HARQ to the network device according to the value of the first parameter as a third preset value -ACK information.

It should be understood that when the first indication information takes the first 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.

Specifically, 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, and 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.

In S251, 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 following is an example for description. For example, the UE determines a PUCCH resource set, and in this PUCCH resource set, the base station configures PUCCH resources. Suppose the base station configures 4 PUCCH resources, the PUCCH resource IDs are {1, 2, 3, 4}, and the base station configures the second preset value = '0', as shown in FIG. 12 . If the value of the PRI in the multicast DCI is '000', the resource ID corresponding to PRI='000' in the resource list is '1', and the first parameter exists in the PUCCH resource with the resource ID '1'. , and the first parameter is equal to the third preset value, the terminal device does not send the HARQ-ACK information of the PDSCH scheduled by the multicast DCI. If the value of the PRI in the multicast DCI is '001', the resource ID corresponding to PRI='001' in the resource list is '2', and the first parameter exists in the PUCCH resource with the resource ID '2'. , but the first parameter is not equal to the third preset value, so 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.

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.

Optionally, as an embodiment, 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.

It can be understood as: if the base station configures the second parameter for the UE or configures the second parameter and the second parameter is the fourth preset value, 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.

It should be understood that 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.

For example, if the base station configures the second parameter for the UE or the configured second parameter is the fourth preset value, 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.

For another example, if 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 As described in the previous embodiments, 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; if 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;

It should be understood that it is an optional step that the above-mentioned base station configures the second parameter for the UE. In other words, in the method for indicating feedback information in this embodiment of the present application, the above steps may not be performed. In this case, the UE may directly determine not to send the HARQ-ACK information by taking the first preset value according to the first indication information.

In the embodiment of the present application, 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.

It should be understood that the manners, situations, categories, and divisions of the embodiments in the embodiments of the present application are only for the convenience of description, and should not constitute a special limitation. Various manners, categories, situations, and features in the embodiments are not inconsistent cases can be combined.

It should also be understood that, in various embodiments of the present application, first, second, etc. are only intended to represent a plurality of objects that are different. For example, the 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.

It should also be understood that the above is only for helping those skilled in the art to better understand the embodiments of the present application, but is not intended to limit the scope of the embodiments of the present application. Those skilled in the art can obviously make various equivalent modifications or changes based on the above examples given, for example, some steps in the above method may be unnecessary, or some new steps may be added. Or a combination of any two or any of the above embodiments. Such modifications, changes or combined solutions also fall within the scope of the embodiments of the present application.

It should also be understood that the above description of the embodiments of the present application focuses on emphasizing the differences between the various embodiments, and the unmentioned same or similar points can be referred to each other, and are not repeated here for brevity.

It should also be understood that the size of the sequence numbers of the above processes does not mean the sequence of execution, and the execution sequence of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

The method for indicating feedback information according to the embodiment of the present application has been described in detail above with reference to FIGS. 3 to 12 . Hereinafter, the communication device according to the embodiment of the present application will be described in detail with reference to FIG. 13 to FIG. 16 .

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. As shown in FIG. 13 , 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.

It should be understood that, for the specific process of each unit in the terminal device 300 performing the above-mentioned corresponding steps, please refer to the foregoing descriptions in conjunction with the method embodiments in FIGS.

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. As shown in FIG. 14 , 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.

It should be understood that, for the specific process of each unit in the network device 400 performing the above-mentioned corresponding steps, please refer to the foregoing descriptions in conjunction with the method embodiments in FIGS. 3 to 12 , which are not repeated here for brevity.

In one example, 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. For another example, when 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. For another example, 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. As shown in FIG. 15 , 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 . In the downlink direction, 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. In the uplink direction, the signal processing part 530 processes the information of the terminal equipment and sends it to the radio frequency device 520 , and 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. Optionally, 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. In addition, 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. In the various steps of the method, the interface circuit is used to communicate with other devices. In one implementation, 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. For example, 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.

In another implementation, 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. At this time, 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.

In yet another implementation, 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.

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. As shown in FIG. 16 , 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 . In the uplink direction, 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. In the downlink direction, the baseband device 603 processes the information of the terminal and sends it to the radio frequency device 602 , and 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. In addition, 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. In one implementation, 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.

In another implementation, 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. For example, 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. For example, when the apparatus is implemented in the form of a chip, 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.

Optionally, the computer instructions are stored in a storage unit.

Optionally, the storage unit is a storage unit in the chip, such as a register, a cache, etc., and 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. Wherein, 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 . Alternatively, the processing unit and the memory may also be coupled on the same device.

It can be understood that 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. Wherein, 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. There are many different types of RAM such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate Synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory Access memory (direct rambus RAM, DR RAM).

The terms "uplink" and "downlink" appearing in this application are used to describe the direction of data/information transmission in specific scenarios. For example, 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.

Various messages/information/equipment/network element/system/device/action/operation/process/concept that may appear in this application are given names. It can be understood that these specific names do not Constitutes a limitation on related objects, and the assigned names can be changed according to factors such as the scene, context or usage habits. The understanding of the technical meaning of the technical terms in this application should mainly be based on the functions embodied/executed in the technical solution. and technical effects.

In the various embodiments of the present application, if there is no special description or logical conflict, the terms and/or descriptions between different embodiments are consistent and can be referred to each other, and the technical features in different embodiments are based on their inherent Logical relationships can be combined to form new embodiments.

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. 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. When the computer program or instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are executed in whole or in part. 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.

Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described systems, devices and units may refer to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, 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.

Claims

A method for indicating feedback information, comprising:

The terminal device receives downlink control information DCI, 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 the HARQ-ACK information of the HARQ-ACK request according to satisfying the first preset condition;

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 receiving state of the PDSCH.
The method according to claim 1, wherein the first indication information indicates first feedback time information, and the first feedback time information is from the time unit where the PDSCH is located to the time when the HARQ-ACK information is sent The number of time units between the time units.
The method according to claim 2, wherein the first feedback time information belongs to a feedback time information set, the feedback time information set includes at least one piece of feedback time information, and at least one value of the first indication information Associated with at least one feedback time information in the feedback time information set, 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 determines not to send the HARQ-ACK information according to the value of the feedback time information associated with the first preset value in the feedback time information set being a second preset value;

The set of feedback time information is a set of the number of time units between the time unit where the PDSCH is located and the time unit where the HARQ-ACK information is sent.
The method according to claim 1, wherein the first indication information is used to instruct the terminal device to send a first resource of the HARQ-ACK information, the first resource belongs to a first resource set, and the 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 method according to claim 4, wherein the Mth value of the first indication information is associated with the resources in the first resource set, and the first value of the first indication information is associated with the resources in the first resource set. There is at least one value in the (M-1)th value that cannot be mapped to the resources in the first resource set, and M≥2;

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 determines not to send the HARQ-ACK information according to the first preset value that cannot be mapped to the resource in the resource set.
The method according to claim 4, wherein 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 determines not to send the HARQ-ACK information according to the jth value of the first preset value, 1≤j≤k, where j and k are both positive integers.
The method according to claim 4, wherein the terminal device takes a first preset value according to the first indication information, and determines not to send the HARQ-ACK information, comprising:

The first preset value is mapped to resource configuration information corresponding to the first resource, where the resource configuration information includes a first parameter;

The terminal device determines not to send the HARQ-ACK information according to the first parameter.
The method according to claim 4, wherein the terminal device takes a first preset value according to the first indication information, and determines not to send the HARQ-ACK information, comprising:

The first preset value is mapped to resource configuration information corresponding to the first resource, where the resource configuration information includes a first parameter;

The terminal device determines not to send the HARQ-ACK information according to the value of the first parameter as a third preset value.
The method according to claim 4, wherein the terminal device takes a first preset value according to the first indication information, and determines not to send the HARQ-ACK information, comprising:

The first preset value is mapped to resource configuration information corresponding to the first resource, and the resource configuration information does not include the first parameter;

The terminal device determines not to send the HARQ-ACK information according to the fact that the resource configuration information does not include the first parameter, where the first parameter is used to indicate whether the terminal device sends the HARQ-ACK information.
The method according to any one of claims 1 to 9, wherein the method further comprises:

In the case that the terminal device does not send the HARQ-ACK information, the terminal device does not save the HARQ-ACK information.
A method for indicating feedback information, comprising:

The network device determines that the terminal device does not send hybrid automatic repeat request HARQ-ACK information, where the HARQ-ACK information is used to indicate the reception status of the physical downlink shared channel PDSCH;

The network device sends 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 the first indication information;

The first indication information takes a first preset value, which is used to instruct the network device not to receive the HARQ-ACK information.
The method according to claim 11, wherein the first indication information indicates first feedback time information, and the first feedback time information is from the time unit where the PDSCH is located to when the HARQ-ACK information is sent The number of time units between the time units.
The method according to claim 12, wherein the first feedback time information belongs to a feedback time information set, the feedback time information set includes at least one piece of feedback time information, and at least one value of the first indication information Associated with at least one feedback time information in the feedback time information set, the first indication information takes a first preset value, and is used to instruct the network device not to receive the HARQ-ACK information, including:

The feedback time information associated with the first preset value in the feedback information set is the second preset value, which is used to instruct the network device not to receive the HARQ-ACK information;

The set of feedback time information is the set of the number of time units between the time unit where the PDSCH is located and the time unit where the HARQ-ACK information is sent.
The method according to claim 11, wherein the first indication information is used to instruct the terminal device to send a first resource of HARQ-ACK information, the first resource belongs to a first resource set, and the first resource A resource set includes N resources, at least one value of the first indication information is associated with at least one resource in the first resource set, and N is a positive integer greater than or equal to 1.
The method according to claim 14, wherein the Mth value of the first indication information is associated with the resources in the first resource set, and the first value of the first indication information is associated with the resources in the first resource set. There is at least one value in the (M-1)th value that cannot be mapped to the resources in the first resource set, and M≥2;

The first indication information takes a first preset value and is used to instruct the network device not to receive the HARQ-ACK information, including:

The first preset value is not mapped to the resources in the first resource set, and is used to instruct the network device not to receive the HARQ-ACK information.
The method according to claim 14, wherein 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;

The first indication information takes a first preset value and is used to instruct the network device not to receive the HARQ-ACK information, including:

The first preset value is the jth value, which is used to indicate that the network device does not receive the HARQ-ACK information, 1≤j≤k, where j and k are both positive integers.
The method according to claim 14, wherein the first indication information takes a first preset value to instruct the network device not to receive the HARQ-ACK information, comprising:

The first preset value is mapped to resource configuration information corresponding to the first resource, where the resource configuration information includes a first parameter;

The first parameter is used to indicate that the network device does not receive the HARQ-ACK information.
The method according to claim 14, wherein the first indication information takes a first preset value to instruct the network device not to receive the HARQ-ACK information, comprising:

The first preset value is mapped to resource configuration information corresponding to the first resource, where the resource configuration information includes a first parameter;

The value of the first parameter included in the resource configuration information is the third preset value, which is used to instruct the network device not to receive the HARQ-ACK information.
The method according to claim 14, wherein the first indication information takes a first preset value to instruct the network device not to receive the HARQ-ACK information, comprising:

The first preset value is mapped to resource configuration information corresponding to the first resource, and the resource configuration information does not include the first parameter;

The resource configuration information does not include the first parameter, which is used to indicate that the network device does not receive the HARQ-ACK information, and the first parameter is used to indicate whether the network device receives the HARQ-ACK information .
A terminal device, characterized in that it includes:

a receiving unit, configured to receive downlink control information DCI, 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 processing unit, according to satisfying the first preset condition, determines not to send the HARQ-ACK information of the hybrid automatic repeat request;

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 receiving state of the PDSCH.
The terminal device according to claim 20, wherein the first indication information indicates first feedback time information, and the first feedback time information is from the time unit where the PDSCH is located to when the HARQ-ACK is sent The number of time units between time units where the information is located.
The terminal device according to claim 21, wherein the first feedback time information belongs to a feedback time information set, the feedback time information set includes at least one piece of feedback time information, and at least one of the first indication information is selected from a set of feedback time information. a value associated with at least one feedback time information in the set of feedback time information;

The processing unit is specifically configured to: determine not to send the HARQ-ACK information according to the value of the feedback time information associated with the first preset value in the feedback time information set being a second preset value;

The set of feedback time information is a set of the number of time units between the time unit where the PDSCH is located and the time unit where the HARQ-ACK information is sent.
The terminal device according to claim 20, wherein the first indication information is used to instruct the processing unit to send a first resource of the HARQ-ACK information, and the first resource belongs to a first resource set, 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 terminal device according to claim 23, wherein the Mth value of the first indication information is associated with the resources in the first resource set, and the first value of the first indication information is From the value to the (M-1)th value, there is at least one value that cannot be mapped to a resource in the first resource set, and M≥2;

The processing unit is specifically configured to: determine not to send the HARQ-ACK information according to the resources in the resource set that cannot be mapped by the first preset value.
The terminal device according to claim 23, wherein 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 ;

The processing unit is specifically configured to: determine not to send the HARQ-ACK information according to the jth value of the first preset value, where 1≤j≤k, where j and k are both positive integers.
The terminal device according to claim 23, wherein the processing unit is specifically configured to:

The first preset value is mapped to resource configuration information corresponding to the first resource, where the resource configuration information includes a first parameter;

It is determined not to send the HARQ-ACK information according to the first parameter.
The terminal device according to claim 23, wherein the processing unit is specifically configured to:

The first preset value is mapped to resource configuration information corresponding to the first resource, where the resource configuration information includes a first parameter;

According to the value of the first parameter being a third preset value, it is determined not to send the HARQ-ACK information.
The terminal device according to claim 23, wherein the processing unit is specifically configured to:

The first preset value is mapped to resource configuration information corresponding to the first resource, and the resource configuration information does not include the first parameter;

According to the fact that the resource configuration information does not include the first parameter, it is determined not to send the HARQ-ACK information, where the first parameter is used to indicate whether the processing unit sends the HARQ-ACK information.
The terminal device according to any one of claims 20 to 28, wherein the processing unit is further configured to:

In the case that the processing unit does not send the HARQ-ACK information, the processing unit does not save the HARQ-ACK information.
A network device, characterized in that it includes:

a processing unit, determining that the terminal device does not send the HARQ-ACK information of the hybrid automatic repeat request, where the HARQ-ACK information is used to indicate the receiving state of the physical downlink shared channel PDSCH;

a sending unit, sending downlink control information DCI, where the DCI is scrambled by a group wireless network temporary identifier G-RNTI, the DCI is used to schedule the PDSCH, and the DCI includes the first indication information;

The first indication information takes a first preset value, which is used to instruct the processing unit not to receive the HARQ-ACK information.
The network device according to claim 30, wherein the first indication information indicates first feedback time information, and the first feedback time information is from the time unit where the PDSCH is located to when the HARQ-ACK is sent The number of time units between time units where the information is located.
The network device according to claim 31, wherein the first feedback time information belongs to a feedback time information set, the feedback time information set includes at least one piece of feedback time information, and at least one of the first indication information is selected from a set of feedback time information. a value associated with at least one feedback time information in the set of feedback time information;

The processing unit is specifically configured to: the feedback time information associated with the first preset value in the feedback information set is the second preset value, which is used to instruct the processing unit not to receive the the HARQ-ACK information;

The set of feedback time information is the set of the number of time units between the time unit where the PDSCH is located and the time unit where the HARQ-ACK information is sent.
The network device according to claim 30, wherein the first indication information is used to instruct the terminal device to send a first resource of HARQ-ACK information, the first resource belongs to a first resource set, and the 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 first resource set, and N is a positive integer greater than or equal to 1.
The network device according to claim 33, wherein the M-th value of the first indication information is associated with the resources in the first resource set, and the M-th value of the first indication information is associated with the resources in the first resource set. From the value to the (M-1)th value, there is at least one value that cannot be mapped to a resource in the first resource set, and M≥2;

The processing unit is specifically configured to: the first preset value cannot be mapped to the resources in the first resource set, and is used to instruct the processing unit not to receive the HARQ-ACK information.
The network device according to claim 33, wherein 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 ;

The processing unit is specifically configured to: the first preset value is the jth value, which is used to instruct the processing unit not to receive the HARQ-ACK information, 1≤j≤k, where j, k All are positive integers.
The network device according to claim 33, wherein the processing unit is specifically configured to:

The first preset value is mapped to resource configuration information corresponding to the first resource, where the resource configuration information includes a first parameter;

The first parameter is used to instruct the processing unit not to receive the HARQ-ACK information.
The network device according to claim 33, wherein the processing unit is specifically configured to:

The first preset value is mapped to resource configuration information corresponding to the first resource, where the resource configuration information includes a first parameter;

The value of the first parameter included in the resource configuration information is the third preset value, which is used to instruct the processing unit not to receive the HARQ-ACK information.
The network device according to claim 33, wherein the processing unit is specifically configured to:

The first preset value is mapped to resource configuration information corresponding to the first resource, and the resource configuration information does not include the first parameter;

The resource configuration information does not include the first parameter, which is used to indicate that the processing unit does not receive the HARQ-ACK information, and the first parameter is used to indicate whether the processing unit receives the HARQ-ACK information .
A terminal device, characterized by comprising at least one processor and an interface circuit, wherein the at least one processor is configured to execute the method according to any one of claims 1 to 10.
A network device, characterized by comprising at least one processor and an interface circuit, wherein the at least one processor is configured to execute the method according to any one of claims 11 to 19 .
A computer-readable medium, characterized in that it is used for storing a program, when the program is executed by a processor, the method according to any one of claims 1 to 10 is executed or any one of claims 11 to 19 is executed. A described method is performed.
A chip system, characterized in that the chip system includes:

a processor coupled to a memory for storing instructions;

The processor is configured to call and execute the instructions from the memory, so that the communication device installed with the chip system executes the method according to any one of claims 1 to 10 or any one of claims 11 to 19 one of the methods described.