WO2023024915A1

WO2023024915A1 - Communication method and apparatus

Info

Publication number: WO2023024915A1
Application number: PCT/CN2022/111677
Authority: WO
Inventors: 张彦清; 李雪茹
Original assignee: 华为技术有限公司
Priority date: 2021-08-26
Filing date: 2022-08-11
Publication date: 2023-03-02
Also published as: CN115733599A

Abstract

The present application relates to the technical field of communications, and provides a communication method and apparatus, used for reducing signaling overhead. In the communication method, one piece of control information can be used for scheduling N physical shared channels, the N physical shared channels comprising M first physical shared channels; in the case that N is equal to M, a first field in the control information can carry first indication information, the first indication information being used for indicating an MCS of the N physical shared channels; and in the case that N is greater than M, the first field can carry second indication information, the second indication information being used for indicating HARQ process information of K second physical shared channels other than the M first physical shared channels among the N physical shared channels. The present application provides a mechanism of supporting control information to schedule a plurality of physical shared channels, so as to reduce signaling overhead.

Description

A communication method and device

Cross References to Related Applications

This application claims the priority of the Chinese patent application submitted to the China Patent Office on August 26, 2021, with the application number 202110987590.1 and the application name "A Retransmission Method for XR Services", the entire content of which is incorporated in this application by reference middle; this application claims the priority of a Chinese patent application with application number 202111298540.9 and application title "A Communication Method and Device" filed with the China Patent Office on November 04, 2021, the entire contents of which are incorporated by reference in this application middle.

technical field

The present application relates to the technical field of communication, and in particular to a communication method and device.

Background technique

In the communication process, data transmission errors or even packet loss may occur. In order to improve the reliability of data transmission, a hybrid automatic repeat request (HARQ) mechanism is introduced. Under the HARQ mechanism, the sending end can add redundant data with certain error detection and error correction capabilities to the original data to be sent, and send the original data and corresponding redundant data to the receiving end. After receiving the original data and the corresponding redundant data, the receiving end may decode the original data according to the redundant data, and feed back HARQ response information to the sending end according to the decoding result of the original data. Wherein, if the receiving end decodes the original data correctly, the HARQ response information is an acknowledgment (acknowledgment, ACK), and if the receiving end decodes the original data incorrectly, the HARQ response information is a negative-acknowledgment (NACK). . If the sending end receives the ACK, the sending end may continue to send the next data, or may determine that the original data sending process ends. And if the sender receives NACK, the sender can retransmit the original data to the receiver.

The receiving end receives data from the sending end through the HARQ process, and generates corresponding HARQ response information and the like. The receiving end can maintain multiple HARQ processes, and different HARQ processes are used to receive data on different channels. The receiving end needs to indicate which HARQ process is used to receive the receiving end. For example, in a downlink transmission scenario, the base station as the sending end can send downlink control information (DCI) to the terminal device as the receiving end, where one DCI can carry a physical downlink shared channel (physical downlink shared channel, PDSCH) corresponding HARQ process ID. The terminal device receives the PDSCH in the HARQ process corresponding to the HARQ process number according to the HARQ process number carried by the DCI. According to the current method, if the sending end needs to indicate the HARQ process numbers of multiple channels, it needs to send multiple control information, and the signaling overhead is relatively large.

Contents of the invention

Embodiments of the present application provide a communication method and device, which are used to reduce signaling overhead in a communication process.

In a first aspect, the embodiment of the present application provides a communication method, and the method may be executed by a terminal device, or a chip on the terminal device, or a chipset on the terminal device, or the like. For ease of description, the execution of the terminal device is used as an example in the following. The method includes: receiving control information, the control information is used to schedule N physical shared channels, the control information includes a first field, the N physical shared channels include M first physical shared channels, and the N and The Ms are all positive integers; where, when the N is equal to the M, the first field carries first indication information, and the first indication information is used to indicate the N physical shared channels A modulation and coding scheme (modulation and coding scheme, MCS); when the N is greater than the M, the first field carries second indication information, and the second indication information is used to indicate K second physical The first hybrid automatic repeat request HARQ process information of the shared channel, the K is a positive integer, and the K second physical shared channels are among the N physical shared channels except the M first physical shared channels external physical shared channel.

In the embodiment of the present application, one piece of control information can schedule multiple physical shared channels, and there is no need to use multiple pieces of control information to schedule multiple physical shared channels, reducing the overhead for transmitting control information. Moreover, the control information can schedule multiple physical shared channels in one time slot, thereby relatively reducing the time delay for scheduling multiple physical shared channels. The terminal device does not need to receive multiple pieces of control information, which is beneficial to reduce the power consumption of the terminal device caused by receiving information. Moreover, when N is equal to M, the first field can be used to carry the first indication information, and when N is greater than M, the first field can be used to carry the second indication information, thus realizing the multiplexing of the first field. It can relatively reduce the number of bits occupied by the control information.

In a possible implementation manner, the control information further includes code block group transmission information (code block group transmission information, CBGTI), and the CBGTI is used to indicate the code block CBG for retransmission of the N physical shared channels The method further includes: receiving first configuration information, where the first configuration information is used to configure the maximum number of schedulable physical shared channels in the control information; and determining the value of N according to the CBGTI.

In the above embodiment, the terminal device can determine the number N of physical shared channels scheduled by the control information according to the CBGTI in the control information, without complicated calculation, and the determination method is simple. Moreover, there is no need to use the control information alone to indicate the value of N, so there is no need to additionally increase the number of bits occupied by the control information.

In a possible implementation manner, the control information further includes a first row index, and the method further includes: receiving second configuration information, where the second configuration information is used to configure a time-domain resource allocation list, and the The time domain resource allocation list includes at least one row index, and time domain resource information of at least one physical shared channel indicated by each row index in the at least one row index, and the at least one row index includes the first row index: determine the number of physical shared channels indicated by the first row index from the time domain resource allocation list, and determine the value of N.

In the above embodiment, the terminal device can determine the number of physical shared channels associated with the first row index in the control information to obtain the value of N, without requiring the terminal device to perform complicated calculations to determine The way to get the value of N is relatively simple. Moreover, there is no need to use the control information alone to indicate the value of N, so there is no need to additionally increase the number of bits occupied by the control information.

In a possible implementation manner, the control information further includes the first HARQ process numbers of the M first physical shared channels, and the first HARQ process numbers are used to determine each of the M first physical shared channels. HARQ process number; the first HARQ process information includes: a second HARQ process number, the second HARQ process number is used to indicate the HARQ process numbers of the K second physical shared channels; or, the second HARQ process number The offset of the second HARQ process number refers to the offset of the HARQ process numbers of the K second physical shared channels relative to the first HARQ process number.

In the above embodiment, the second indication information may indicate the HARQ process number, so that the terminal device can directly obtain the HARQ process numbers of some or all of the K second physical shared channels. Or, since the offset of the HARQ process number is generally less than the number of bits occupied by the HARQ process number, the second indication information indicates the offset of the HARQ process number, which can relatively save the bits occupied by the second indication information number.

In a possible implementation manner, when the N is greater than the M, the transmission units carried by the N physical shared channels are all retransmissions, and the transmission units carried by the N physical shared channels are respectively The MCS used in the previous transmission of the transmission unit is the same, and the transmission unit is a transport block (transport block, TB), a code block (code block, CB) or a code block group (code block group, CBG).

In the above embodiment, the MCS of the last transmission of the transmission units carried by the N physical shared channels are all the same, so that even if the terminal device does not obtain the last transmission unit carried by a part of the N physical shared channels For the MCS of one transmission, the terminal device can also decode the transmission units carried by a part of the physical shared channels of the last transmission according to the MCS of the previous transmission of the transmission units carried by another part of the physical shared channels among the N physical shared channels. This improves the reliability of terminal equipment demodulation.

In a possible implementation manner, when the N is greater than the M, the first field further carries one or more of the following information: at least one of the K second physical shared channels A new data indicator NDI of a second physical shared channel, wherein the NDI of the at least one second physical shared channel is used to indicate that the one second physical shared channel is used for new transmission or retransmission; or, the N The offset of the MCS index of the physical shared channel, where the offset of the MCS index is used to indicate that the MCS index adopted by the transmission units respectively carried on the N physical shared channels is relative to the last transmission of the transmission unit The offset of the used MCS index; or, the code block group flush information (code block group flush information, CBGFI) of at least one second physical shared channel among the K second physical shared channels, where one second physical shared channel The CBGFI of the shared channel is used to indicate whether the transmission unit carried on the second physical shared channel is soft-combined with the transmission unit transmitted last time.

In the above embodiment, when N is greater than M, in addition to carrying the second indication information, the first field may also carry the NDI of at least one second physical shared channel among the K second physical shared channels, and the N physical shared channels One or more of the information such as the offset of the MCS index of the channel and the CBGFI of at least one second physical shared channel in the K second physical shared channels, so that the first field carries more information, which can be The first field is used to the greatest extent without adding additional fields to carry the information, and the fields corresponding to the control information can be relatively reduced. Moreover, the information carried by the first field is beneficial for the terminal device to better decode the transmission units on the N physical shared channels.

In a possible implementation manner, when the N is greater than the M, and the first field does not carry the offset of the MCS index of the N physical shared channels, the N physical shared channels The MCS indexes adopted by the transmission units respectively carried on the channels are the same, and are the same as the MCS adopted by the last transmission of the transmission units respectively carried by the N physical shared channels.

In the above embodiment, in the case that the first field does not carry the offsets of the MCS indexes of the N physical shared channels, the MCS indexes used by the transmission units respectively carried on the N physical shared channels are all the same, and are the same as The MCS used in the last transmission of the transmission units carried by the N physical shared channels is the same, so that the terminal device can directly use the MCS used in the previous transmission to perform the transmission carried by the N physical shared channels this time. The unit is demodulated. Moreover, the first field needs to carry less information, which relatively reduces the number of bits occupied by the control information.

In a possible implementation manner, the method further includes: receiving third configuration information, where the third configuration information is used to configure a first demodulation reference signal (demodulation reference signal, DMRS); according to the first DMRS Demodulate the transmission units respectively carried by the N physical shared channels.

In the above embodiment, the DMRSs corresponding to the N physical shared channels may be the same, and the terminal device may demodulate the N physical shared channels according to one DMRS, which relatively reduces the number of DMRSs received by the terminal device.

In a possible implementation manner, the control information further includes third indication information, the third indication information is used to indicate the redundancy versions RV of the N physical shared channels, and the third indication information includes N bits, and when the N is greater than the M, the N bits are respectively used to indicate the RVs of the N physical shared channels.

In the above embodiments, the terminal device can indicate the RVs of N physical shared channels according to the third indication information in the control information, and the N bits can be used to indicate the RVs of N physical shared channels and the RV of one physical shared channel respectively. It only needs to be indicated by one bit, which is beneficial to reduce the number of bits occupied by the third indication information.

In a possible implementation manner, the method further includes: respectively determining N pieces of first HARQ response information according to the decoding results of the N physical shared channels, wherein any of the N pieces of first HARQ response information A first HARQ response information includes P bits, any one of the P bits is used to indicate a positive acknowledgment ACK or a negative acknowledgment NACK performed by a transmission unit carried by the corresponding physical shared channel, P is a positive integer, and the transmission The unit is TB, CB or CBG; perform spatial binding on the N first HARQ response information to obtain second HARQ response information, and the spatial binding is the P bits in the N first HARQ response information The second HARQ response information includes P bits; and the second HARQ response information is sent.

In the above embodiment, the terminal device can generate a first HARQ response information according to the decoding result of one of the N physical shared channels, and so on, and the terminal device can generate the first HARQ response information according to the decoding results of the N physical shared channels respectively. N pieces of first HARQ response information, and after performing spatial binding on the N first HARQ response information, generate second HARQ response information including P bits, which is conducive to reducing the number of HARQ response information sent by the terminal device, and relatively The number of bits occupied by N physical shared channels is saved.

In a possible implementation manner, the method further includes: receiving fourth configuration information, where the fourth configuration information includes fourth indication information, and the fourth indication information is used to indicate whether to configure the N first The HARQ response information performs the space binding; the sending of the second HARQ response information includes: if it is determined that the value of the fourth indication information is a first value, the first value indicates that the N The first HARQ response information performs the spatial bundling, and then sends the second HARQ response information; the method further includes: if it is determined that the value of the fourth indication information is a second value, the second value indicates Sending the N first HARQ response information without performing the spatial bundling on the N first HARQ response information.

In the above embodiment, the terminal device can determine whether to spatially bind the N first HARQ response information according to the value of the fourth indication information in the fourth configuration information, so as to flexibly instruct the terminal device to perform spatial binding on the N first HARQ response information. Reply messages are spatially bound.

In the second aspect, the embodiment of the present application provides a communication method, which can be executed by a network device, or a chip on a network device, or a chipset on a network device, etc., and can also be executed by a terminal device, or a chip on a terminal device , or the chipset on the terminal device, etc. The method includes: sending control information, wherein the control information is used to schedule N physical shared channels, the control information includes a first field, the N physical shared channels include M first physical shared channels, the Both N and the M are positive integers, and when the N is equal to the M, the first field carries first indication information, and the first indication information is used to indicate the N physical shared channels MCS: In the case where the N is greater than the M, the first field carries second indication information, and the second indication information is used to indicate the first hybrid automatic repeat request HARQ of K second physical shared channels Process information, the K is a positive integer, and the K second physical shared channels are physical shared channels other than the M first physical shared channels among the N physical shared channels.

In a possible implementation manner, the control information further includes code block group transmission information CBGTI, and the CBGTI is used to indicate the code block CBG for retransmission of the N physical shared channels; the method further includes: sending First configuration information, where the first configuration information is used to configure the maximum number of physical shared channels that can be scheduled by the control information.

In a possible implementation manner, the method further includes: sending second configuration information, where the second configuration information is used to configure a time domain resource allocation list, and the time domain resource allocation list includes at least one row index , and including time-domain resource information of at least one physical shared channel indicated by each row index in the at least one row index, the at least one row index includes a first row index, and the control information includes the first row Index, where the index in the first row is used to indicate the number of physical shared channels indicated in the time domain resource allocation list.

In a possible implementation manner, when the N is greater than the M, the transmission units carried by the N physical shared channels are all retransmissions, and the transmission units carried by the N physical shared channels are respectively The MCS used in the last transmission of the transmission unit is the same, and the transmission unit is a transmission block TB, a code block CB or a code block group CBG.

In a possible implementation manner, when the N is greater than the M, the first field further carries one or more of the following information: at least one of the K second physical shared channels A new data indicator NDI of a second physical shared channel, wherein the NDI of the at least one second physical shared channel is used to indicate that the one second physical shared channel is used for new transmission or retransmission; or, the N The offset of the MCS index of the physical shared channel, where the offset of the MCS index is used to indicate that the MCS index adopted by the transmission units respectively carried on the N physical shared channels is relative to the last transmission of the transmission unit The offset of the MCS index used; or, the code block group refresh information CBGFI of at least one second physical shared channel among the K second physical shared channels, wherein the CBGFI of one second physical shared channel is used to indicate the Whether the transmission unit carried on the second physical shared channel is soft-combined with the transmission unit transmitted last time.

In a possible implementation manner, the method further includes: sending third configuration information, the third configuration information is used to configure a first demodulation reference signal DMRS, and the first DMRS is used for the N The transmission units carried by the physical shared channel are respectively demodulated.

In a possible implementation manner, the method further includes: receiving second HARQ response information, wherein the second HARQ response information includes P bits, and the second HARQ response information is the N first HARQ response information The information is spatially bound, the N first HARQ response information is determined according to the decoding results of the N physical shared channels, and the spatial bundling is the N first HARQ response information The bit in the same position in the P bits is obtained by logical AND operation, any one of the first HARQ response information of the N first HARQ response information contains P bits, and any one of the P bits is used In order to indicate an acknowledgment ACK or a negative acknowledgment NACK performed by a transmission unit carried by a corresponding physical shared channel among the N physical shared channels, the P is a positive integer, and the transmission unit is TB, CB or CBG.

In a possible implementation manner, the method further includes: sending fourth configuration information, where the fourth configuration information includes fourth indication information, and the fourth indication information is used to indicate whether the N first The HARQ response information performs the space binding; receiving the second HARQ response information includes: if the value of the fourth indication information is a first value, the first value indicates the N first HARQ response information performing the spatial bundling, receiving the second HARQ response information; the method further includes: if the value of the fourth indication information is a second value, the second value indicates that the Nth performing the spatial bundling on one HARQ response message and receiving N pieces of the first HARQ response message if the value of the fourth indication information is the second value.

In the third aspect, the embodiment of the present application provides a communication device, which can be the terminal device in the above first aspect, or an electronic device (such as a chip system) configured in the terminal device, or a communication device including the terminal device The larger device of the device. The terminal device includes corresponding means or modules for implementing the above first aspect or any optional implementation manner. For example, the communication device includes a transceiver module (also called a transceiver unit sometimes), and optionally, the communication device further includes a processing module (also called a processing unit sometimes).

For example, the transceiver module is configured to receive control information, the control information is used to schedule N physical shared channels, the control information includes a first field, and the N physical shared channels include M first physical shared channels, Both the N and the M are positive integers; wherein, when the N is equal to the M, the first field carries first indication information, and the first indication information is used to indicate that the N The MCS of the physical shared channel; when the N is greater than the M, the first field carries second indication information, and the second indication information is used to indicate the first hybrid automatic Retransmission request HARQ process information, the K is a positive integer, and the K second physical shared channels are physical shared channels except the M first physical shared channels among the N physical shared channels.

In the fourth aspect, the embodiment of the present application provides a communication device, which may be the network device or terminal device in the above second aspect, or an electronic device (for example, a chip system) configured in the network device or terminal device , or a larger device including the network device or terminal device. The network device or terminal device includes corresponding means (means) or modules for implementing the above second aspect or any optional implementation manner. For example, the communication device includes a transceiver module (also called a transceiver unit sometimes), and optionally, the communication device further includes a processing module (also called a processing unit sometimes).

For example, the transceiver module is used to send control information, where the control information is used to schedule N physical shared channels, the control information includes a first field, and the N physical shared channels include M first physical shared channels channel, the N and the M are both positive integers, and when the N is equal to the M, the first field carries first indication information, and the first indication information is used to indicate the N The modulation and coding strategy MCS of the physical shared channel; in the case where the N is greater than the M, the first field carries second indication information, and the second indication information is used to indicate K second physical shared channels First Hybrid Automatic Repeat Request HARQ process information, the K is a positive integer, and the K second physical shared channels are physical physical shared channels other than the M first physical shared channels among the N physical shared channels shared channel.

In a fifth aspect, a communication device is provided, including: a processor and a memory; the memory is used to store one or more computer programs, the one or more computer programs include computer-executable instructions, and when the communication device is running , the processor executes the one or more computer programs stored in the memory, so that the communication device executes the method in the first aspect or any optional implementation manner, or executes the method in the second aspect or The method in any of the alternative embodiments.

Optionally, the communication device further includes other components, for example, an antenna, an input and output module, an interface, and the like. These components can be hardware, software, or a combination of software and hardware.

In a sixth aspect, an embodiment of the present application provides a computer program product, the computer program product stores a computer program, the computer program includes program instructions, and when the program instructions are executed by a computer, the computer executes the following steps: The method in one aspect or any optional implementation, or perform the method in the second aspect or any optional implementation.

In a seventh aspect, the present application provides a chip system, the chip system includes a processor, and may also include a memory, for implementing the method in the first aspect or any optional implementation manner, or executing the method in the second aspect Or the method in any optional embodiment. The system-on-a-chip may consist of chips, or may include chips and other discrete devices.

For the beneficial effects of the above-mentioned second aspect to the seventh aspect and their implementation manners, reference may be made to the description of the beneficial effects of the method of the first aspect and its implementation manners.

Description of drawings

FIG. 1 is a schematic flow diagram of transmitting data using a HARQ mechanism;

FIG. 2 is a schematic diagram of division of transport blocks;

Fig. 3 is a kind of transmission schematic diagram under time division multiplexing;

FIG. 4 is a schematic diagram of a scenario applicable to an embodiment of the present application;

FIG. 5 is a schematic diagram of another scenario applicable to the embodiment of the present application;

FIG. 6 is a schematic flowchart of a communication method provided by an embodiment of the present application;

FIG. 7 is a schematic diagram of time-frequency resource configuration of two physical shared channels provided by the embodiment of the present application;

FIG. 8 is a schematic diagram of a process of spatially bundling N first HARQ response information provided by an embodiment of the present application;

FIG. 9 is a first structural schematic diagram of a communication device provided by an embodiment of the present application;

FIG. 10 is a second structural schematic diagram of a communication device provided by an embodiment of the present application;

FIG. 11 is a schematic structural diagram III of a communication device provided in an embodiment of the present application;

FIG. 12 is a fourth structural schematic diagram of a communication device provided by an embodiment of the present application.

Detailed ways

In order to make the purpose, technical solution and advantages of the application clearer, the application will be further described in detail below in conjunction with the accompanying drawings. The specific operation methods in the method embodiments can also be applied to the device embodiments or system embodiments.

In the following, some terms used in the embodiments of the present application are explained, so as to facilitate the understanding of those skilled in the art.

1. The terminal equipment in the embodiment of the present application may be called user equipment (UE), terminal, access station, UE station, remote station, wireless communication equipment, or user device, etc. The terminal equipment is a kind of A device with a wireless transceiver function may be a fixed device, a mobile device, a handheld device, a wearable device, a vehicle-mounted device, or a wireless device (such as a communication module or a chip system, etc.) built into the above-mentioned devices. Terminal devices are used to connect people, objects, machines, etc., and can be widely used in various scenarios, including but not limited to the following scenarios: cellular communication, device-to-device communication (device-to-device, D2D), vehicle-to-everything (vehicle to everything, V2X), machine-to-machine/machine-type communications (M2M/MTC), Internet of Things (IoT), virtual reality (VR), augmented Augmented reality (AR), industrial control, self-driving, remote medical, smart grid, smart furniture, smart office, smart wear, smart transportation, Terminal equipment for scenarios such as smart cities, drones, and robots. Terminals can be mobile phones, tablet computers, computers with wireless transceiver functions, wearable devices, vehicles, drones, helicopters, airplanes, ships, robots, robotic arms, smart home devices, etc. The embodiment of the present application does not limit the specific technology and specific device form adopted by the terminal device. For the convenience of description, in the embodiment of the present application, the terminal device is taken as an example for description.

2. The network device in the embodiment of the present application includes, for example, an access network device (or called an access network element), and/or a core network device (or called a core network element).

The access network device is a device with a wireless transceiver function, and is used for communicating with the terminal device. The (wireless) access network ((radio) access network, (R)AN) equipment includes but is not limited to the base station (BTS, Node B, eNodeB/eNB, or gNodeB/gNB) in the above-mentioned communication system, the transceiver point ( t(R)ANsmission reception point, TRP), the base station of the subsequent evolution of the third generation partnership project (3rd generation partnership project, 3GPP), the access node in the wireless fidelity (wireless fidelity, WiFi) system, and the wireless relay node , wireless backhaul nodes, etc. The base station may be: a macro base station, a micro base station, a pico base station, a small station, a relay station, and the like. Multiple base stations may support the aforementioned networks of the same access technology, or may support the aforementioned networks of different access technologies. A base station may contain one or more co-sited or non-co-sited transmission and reception points. The network device may also be a wireless controller, a centralized unit (centralized unit, CU), and/or a distributed unit (distributed unit, DU) in a cloud radio access network (cloud radio access network, C(R)AN) scenario. The network device can also be a server, a wearable device, or a vehicle-mounted device, etc. For example, a network device in a vehicle to everything (V2X) technology may be a road side unit (RSU). In the following, the base station is used as an example for the access network device to be described. The multiple network devices in the communication system may be base stations of the same type, or base stations of different types. The base station can communicate with the terminal equipment, and can also communicate with the terminal equipment through the relay station. A terminal device can communicate with multiple base stations in different access technologies.

The core network equipment is used to implement at least one of functions such as mobility management, data processing, session management, policy and charging. The names of devices implementing core network functions in systems with different access technologies may be different, which is not limited in this embodiment of the present application. Taking the 5G system as an example, the core network equipment includes: access and mobility management function (access and mobility management function, AMF), or user plane function (user plane function, UPF), etc.

In the embodiment of the present application, the device for realizing the function of the network device may be a network device, or a device capable of supporting the network device to realize the function, such as a chip system, and the device may be installed in the network device. In the technical solution provided by the embodiment of the present application, the technical solution provided by the embodiment of the present application is described by taking the network device as an example for realizing the function of the network device.

3. The physical shared channel in the embodiment of the present application may be simply referred to as a channel, for example, including PDSCH, physical uplink shared channel (PUSCH) or physical sidelink shared channel (physical sidelink shared channel, PSSCH) one or more.

4. The transmission unit in the embodiment of the present application refers to the unit data carried on the physical shared channel, such as a transport block (transport block, TB), a code block (code block, CB) or a code block group (code block group) , CBG).

5. As for the TB in the embodiment of the present application, one TB can be used as a transmission unit. Or, a TB can be divided into multiple code blocks (code block, CB), in this case, a CB can be used as a transmission unit. Multiple CBs can form a code block group (CBG). In this case, a CBG can be used as a transmission unit. Currently, it is specified in 3GPP TS 38.331 that the sender can indicate to the receiver the number of CBGs included in each TB through the maximum code block group (maxCodeBlockGroupsPerTransportBlock) field included in each TB in the high-level signaling, for example, each TB Includes 2, 4, 6 or 8 CBGs.

In the embodiments of the present application, as for the number of nouns, unless otherwise specified, it means "singular noun or plural noun", that is, "one or more". "At least one" means one or more, and "plurality" means two or more. "And/or" describes the association relationship of associated objects, indicating that there can be three types of relationships, for example, A and/or B, which can mean: A exists alone, A and B exist at the same time, and B exists alone, where A, B can be singular or plural. The character "/" generally indicates that the contextual objects are an "or" relationship. For example, A/B means: A or B. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one item (piece) of a, b, or c means: a, b, c, a and b, a and c, b and c, or a and b and c, where a, b, c Can be single or multiple.

Unless otherwise specified, ordinal numerals such as "first" and "second" mentioned in the embodiments of this application are used to distinguish multiple objects, and are not used to limit the order, timing, priority or importance of multiple objects. For example, the "first indication information" and "second indication information" in the embodiment of the present application may be the same indication information or different indication information, and this expression is not used to limit these two indication information The order of transmission, priority or importance of the transmission is different.

In this embodiment of the present application, "indication" may be interpreted as an explicit indication and/or an implicit indication. For example, A explicitly indicates B, for example, it can be understood that B can be obtained by reading A. For example, A is the second indication information, B is the HARQ information of K second physical shared channels, and A explicitly indicates B, which can be understood as reading the second indication information to obtain K second physical shared channels HARQ process information of each second physical shared channel in K is a positive integer. A implicitly indicates B. For example, it can be understood that reading A can obtain C, and then obtain B based on C, where C may be different from B, and C may also be a part of B. In addition, "indication" can also be understood as "include", for example, the first indication information is used to indicate the modulation and coding scheme (modulation and coding scheme, MCS) of N physical shared channels, and can also be expressed as: the first indication information An MCS including N physical shared channels, where N is a positive integer. Alternatively, "indicate" and "include" may also have different meanings, for example, A indicates B, and it cannot be understood that A includes B, but only that B can be determined according to A.

Unless otherwise specified, in the embodiment of this application, "multiple B information of A" may include any of the following situations (1) to (4): (1) Multiple B information, one B information corresponds to one A, and the B information corresponding to any two A in multiple A are the same; (2) A B information, and the B information of any two A in multiple A are the same; (3) Multiple B information, one of which The B information corresponds to one A, and the multiple B information may not be exactly the same, for example, at least one B information among the multiple B information is different from other B information; (4) Part of the B information of A, and one B information corresponds to one A, According to the B information of the part A, the B information corresponding to each of the multiple A's can be determined, and the B information corresponding to at least two A's among the multiple A's is different.

For ease of understanding, the basic concepts of the HARQ mechanism and the CBG-based transmission scheme are introduced below.

1. HARQ mechanism.

The HARQ mechanism is a retransmission mechanism that combines a forward error correction code (forward error correction, FEC) algorithm and an automatic repeat request (automatic repeat request, ARQ) mechanism. The basic principle of the HARQ mechanism can be referred to above. The FEC algorithm and the ARQ mechanism are introduced respectively below.

(1) The FEC algorithm is an error control method. The FEC algorithm refers to performing encoding processing on the data to be sent according to a certain algorithm, and adding redundant data to the data. The receiving end decodes the received data according to the corresponding FEC algorithm, and corrects the errors generated during the transmission according to the redundant data and corrects them.

(2) The ARQ retransmission mechanism means that the receiving end can judge whether the received data is correct through the cyclic redundancy check (CRC) algorithm, and send the judgment result to the sending end. If the sending end determines that the judgment result indicates a reception error, the sending end can resend the data until the receiving end receives the data correctly.

The HARQ mechanism combines the advantages of the FEC algorithm and the ARQ retransmission mechanism. In addition, the HARQ mechanism can also support soft combining. Soft combining means that the receiving end can store the received error data in a HARQ buffer, and the receiving end can combine the error data in the buffer with the subsequently received retransmission data to obtain a more reliable The data. Soft combining technology can achieve two kinds of gains, one is the gain of signal energy brought by retransmitting the original bits, where the original bits are used to indicate the data to be sent; the other is sending additional correction data when retransmitting the original bits. Coding gain brought by parity bits, where parity bits are used to indicate redundant data.

In new radio (NR) transmission, according to whether the coded bit set for retransmission is the same as that for initial transmission, soft combining can be divided into chase combining (CC) scheme and incremental redundancy (incremental redundancy). redundancy, IR) program. Wherein, the coded bit set is used to indicate data to be sent and redundant data. The coded bit set for retransmission in the CC scheme is the same as the coded bit set for the initial transmission, and the coded bit set for retransmission in the IR scheme does not need to be the same as the coded bit set for the initial transmission.

In the CC scheme, the sender performs CRC on the original bits used to represent them, generates parity bits, encodes the original bits and parity bits, and obtains a coded bit set. Regardless of initial transmission or retransmission, the sending end sends the coded bit set to the receiving end.

In the IR scheme, multiple different coded bit sets can be generated in the IR, and the data to be sent indicated by each coded bit set is the same, but the parity bits corresponding to any two coded bit sets are different . For each retransmission, the sender can transmit a different coded bit set than the previous one. The receiving end will combine the coded bit set of the retransmission with the coded bit set of the previous transmission. The set of coded bits for each retransmission is called a redundancy version (RV). In the IR scheme, as the number of retransmissions increases, the receiver will continue to accumulate redundant information, so as to obtain better decoding results based on the accumulated redundant information.

The following briefly introduces the transmission process based on the HARQ mechanism.

The sending end sends data through the HARQ process, and the receiving end receives data through the HARQ process. The HARQ process may transmit data using a stop-and-wait protocol. The stop-and-wait protocol means that the sender stops sending each time a TB is sent, and then sends the next TB after confirming that the receiver has successfully received the TB.

Please refer to FIG. 1 , which is a schematic flow chart of data transmission using the HARQ mechanism. In FIG. 1 , the HARQ mechanism supports the IR solution and the TB is taken as an example for an introduction.

Step 11, the sender sends TB0 RV0 to the receiver.

Among them, TB0 is used to indicate the first TB transmitted, RV0 can be understood as the first redundant version of the transmitted TB, and TB0 RV0 is used to indicate the first redundant version of the first TB transmitted.

Step 12, if the receiving end fails to receive TB0 RV0, feedback NACK to the sending end.

Step 13, the sender sends TB0 RV1 to the receiver.

Step 14, if the receiving end successfully receives TB0 RV1, it will feed back ACK to the sending end.

Among them, RV1 can be understood as the second redundant version of the transmitted TB, and TB0 RV1 is used to represent the second redundant version of the first TB transmitted.

Step 15, the sender sends TB1 RV0 to the receiver.

Among them, TB1 is used to indicate the second TB transmitted, and TB1 RV0 is used to indicate the first redundant version of the second TB transmitted.

Step 16, if the receiving end successfully receives TB1 RV0, it will feed back ACK to the sending end.

It should be noted that in the CC scheme, the concept of RV is not involved, that is, the coded bit set of each retransmission is the same as that of the initial transmission. The end can retransmit TB0 to the receiving end, and the TB0 retransmitted by the sending end is the same as the TB0 originally transmitted.

The CBG-based transmission scheme is introduced below.

2. CBG-based transmission.

CBG-based transmission refers to transmission using CBG as a transmission unit. Wherein, one CBG includes multiple CBs. The CBG-based transmission specifically means that the sending end performs transmission in units of CBG, and correspondingly, the receiving end also sends a HARQ response to the sending end in units of CBG. In the CBG-based transmission scheme, the sender retransmits in units of CBG, which can reduce resource consumption compared to retransmitting the entire TB; in the CBG-based transmission scheme, retransmission is performed in units of CBG. The number of transmissions is relatively less, and the number of HARQ responses at the receiving end is relatively less, so that the signaling overhead can be reduced.

For example, please refer to FIG. 2 , which is a schematic diagram of a division of TB. As shown in Figure 2, the TB can be divided into four CBGs (CBG0, CBG1, CBG2 and CBG3 in Figure 2). Among them, CBG0 includes CB0 and CB1; CBG1 includes CB2 and CB3; CBG2 includes CB4 and CB5; CBG3 includes CB6 and CB7. If the sender cannot correctly decode a certain CB, then the sender only needs to retransmit the CBG where the CB is located. For example, if the receiving end cannot correctly decode CB4 ("X" in FIG. 2 indicates that the receiving end fails to decode CB4), then the sending end can retransmit the CBG where the CB4 is located, that is, CBG2.

In the following downlink transmission scenario, the base station is used as the sending end, the UE is used as the receiving end, and the maximum number of CBGs included in each TB is 4 as an example to introduce the currently provided methods of indicating the HARQ process.

Please refer to FIG. 3, which shows a schematic diagram of transmission under time division duplex (TDD). A TDD cycle includes 10 time slots, including 8 downlink time slots (D01-D07 as shown in Figure 3, or D10-D17, where D14-D17 is not shown in Figure 3), and 2 uplink time slots (U00-U01 or U10-U11 as shown in Figure 3).

The base station schedules the transmission of one TB on one downlink time slot, for example, TB0-TB5 are scheduled on each time slot of D00-D05, and each TB includes 4 CBGs (such as CBG0-CBG3).

Specifically, the base station sends CBG1 and CBG2 of TB0 to the UE at D00, the UE fails to decode, and the UE decodes all CBGs of TB0 except CBG1 and CBG2 successfully. The base station sends the CBG2 of TB3 to the UE at D03, the UE fails to decode, and the UE decodes all CBGs of TB3 except CBG2 successfully. In addition, the UE successfully decodes all CBGs in TB1, TB2, TB4 and TB5. Wherein, the HARQ response information corresponding to TB0-TB5 is not shown in FIG. 3 . The UE sends the respective HARQ response information of TB0-TB5 to the base station at U00. After the base station receives the respective HARQ response information of TB0-TB5, the base station can schedule the retransmission of CBG1 and CBG2 in TB0 at D12, and schedule the retransmission of CBG2 of TB3 at D13.

The current approach may lead to three problems. Firstly, when the base station schedules the retransmission of TB0 and TB3, two DCIs are required to schedule two time slots (such as D12 and D13) respectively, and the signaling overhead of the base station is relatively large. Second, the retransmission of the CBG of 2 TB is scheduled in 2 time slots, and the retransmission occupies too many time slots, which may aggravate the delay impact of data retransmission on data transmission. For example, if the time slot corresponding to TB3 retransmitted at D13 exceeds the air interface delay budget (packet delay budget, PDB), even if TB3 is decoded correctly at D13, the user experience may have been affected. Thirdly, the UE needs to blindly detect multiple DCIs, which will also cause high power consumption of the UE.

To this end, the embodiment of the present application provides a technical solution. In this technical solution, the receiving end receives control information from the sending end. The control information may be used to schedule N physical shared channels, where N is a positive integer, and the N physical shared channels include M first physical shared channels. In the case where N is equal to M, then the first field in the control information carries first indication information, and the first indication information is used to indicate the MCS of the N physical shared channels. In the case where N is greater than M, the first field carries second indication information, and the second indication information is used to indicate K second physical shared channels in the N physical shared channels except the M first physical shared channels. The first HARQ process information of the channel, K and M are both positive integers. In this technical solution, the control information can schedule multiple physical shared channels. Compared with the way in the prior art that one control information only schedules one physical shared channel, this technical solution can relatively save signaling overhead. Moreover, the first field in the control information is multiplexed to indicate the HARQ process information of the K second physical shared channels or the MCS of the N physical shared channels, which relatively saves the number of bits occupied by the control information. Moreover, for the receiving end receiving the control information, the amount of control information to be received is relatively small, which can save the power consumption of the receiving end.

The technical solution provided by the embodiment of the present application is applicable to any communication system using the HARQ mechanism, for example, it may be the 5th generation mobile communication system (the 5 ^th generation system, 5GS), or it may be a sidelink (sidelink) communication system etc., and may also be a hybrid architecture of various communication systems. An example of a communication system to which this embodiment of the present application is applicable is introduced below.

Please refer to FIG. 4 , which is a schematic diagram of a communication system applicable to this embodiment of the present application. The communication system includes a network device 401 and a terminal device 402 . The network device 401 and the terminal device 402 can communicate with each other. For example, the network device 401 sends control information (such as DCI) to the terminal device 402, where the control information is used to schedule N physical shared channels. The terminal device 402 receives the control information, and determines the respective HARQ process numbers of the N physical shared channels according to the control information. For the specific implementation manners of the network device 401 and the terminal device 402, reference may be made to the content discussed above, and the content related to control information will be discussed below.

Please refer to FIG. 5 , which is another schematic diagram of a communication system applicable to this embodiment of the present application. The communication system includes a first terminal device 501 and a second terminal device 502 . The first terminal device 501 and the second terminal device 502 can communicate with each other. For example, the first terminal device 502 sends control information (such as sidelink control information (sidelink control information, SCI)) to the second terminal device, where the control information is used to schedule N physical shared channels. Correspondingly, the terminal device 502 receives the control information, and determines the respective HARQ process numbers of the N physical shared channels according to the control information. For the specific implementation manners of the first terminal device 501 and the second terminal device 502, reference may be made to the content discussed above, and the content related to control information will be discussed below.

It should be noted that the above-mentioned Figure 4 or Figure 5 is an example of the communication system applicable to the embodiment of the present application, but the communication system applicable to the technical solution in the embodiment of the application includes but is not limited to that shown in Figure 4 or Figure 5 communication system.

The technical solutions provided by the embodiments of the present application are applicable to any type of service in the communication system, such as real-time broadband communication (realt-time broadband communication, RTBC) service in 5GS. Among them, the RTBC service is designed to support large bandwidth and low interaction delay. RTBC business, for example, extended reality (extended reality, XR) business, XR business specifically includes virtual reality (virtual reality, VR), augmented reality (augmented reality, AR) and mixed reality (mixed reality, MR) and other services.

The communication method provided by the embodiment of the present application will be specifically described below with reference to the accompanying drawings.

Please refer to FIG. 6 , which is a flow chart of the communication method provided by the embodiment of the present application. In the embodiment shown in FIG. 6 , the communication method provided by the embodiment of the present application is applied to the communication system shown in FIG. 4 , and the sending end is used as a network device, and the receiving end is used as a terminal device as an example.

S601. The network device sends first configuration information to the terminal device. Correspondingly, the terminal device receives the first configuration information from the network device. The first configuration information is used to configure the maximum number of schedulable physical shared channels.

For example, the network device may send the first configuration information to the terminal device when establishing a radio resource control (radio resource control, RRC) connection with the terminal device. For example, the first configuration information is sent in a radio resource control (radio resource control, RRC) message, or may also be sent in other messages. For example, the first configuration information may be PDSCH configuration information element (PDSCH-Config information element) information in RRC, and the network device may retransmit the schedulable physical shared channel through the DCI maximum retransmission in the PDSCH-Config information element in the RRC message The number of (maxNrofRetransmissionScheduledByDCI) signaling configures the maximum number of schedulable physical shared channels for the terminal device.

For example, the value of maxNrofRetransmissionScheduledByDCI is nL, indicating that the DCI can schedule a maximum of L physical shared channels in one time slot, and L is a positive integer. The maximum number of schedulable physical shared channels is L, which means that the number of schedulable physical shared channels in one DCI is less than or equal to L.

It should be noted that S601 is an example in which the network device configures the maximum number of schedulable physical shared channels for the terminal device, but actually there are multiple ways for the terminal device to obtain the number. For example, the terminal device may be pre-configured with the number, or the number may also be specified in the protocol.

S602. The network device sends second configuration information to the terminal device. Correspondingly, the terminal device receives the second configuration information from the network device. The second configuration information is used to configure the time domain resource list.

No matter how many physical shared channels the network device schedules each time, the network device may pre-configure respective time domain resources of at least one physical shared channel for the terminal device. In this embodiment of the present application, the network device may configure time-domain resource information of at least one physical shared channel for the terminal device through the second configuration information. For example, the network device may send the second configuration information to the terminal device when establishing an RRC connection with the terminal device.

For example, the second configuration information may include a time domain resource allocation list (time domain allocation list), the time domain resource allocation list includes at least one row index (row index), and includes at least one row index indicated by each row index Time-domain resource information of at least one physical shared channel, in other words, one row index may correspond to multiple physical shared channels, and each physical shared channel has its corresponding time-domain resource information. At least one physical shared channel refers to a scheduled physical shared channel.

Optionally, the time-domain resource allocation list further includes a time-domain position of a demodulation reference signal (demodulation reference signal, DMRS) of at least one physical shared channel and a mapping type (mapping type) of at least one physical shared channel. The mapping type includes type A and type B.

Among them, the mapping method of type A is used for the physical shared channel of time-slot scheduling. Taking the physical shared channel of the slot-type scheduling corresponding to the normal (normal) cyclic prefix (cyclic prefix, CP) as an example, then the starting symbol of the physical shared channel of the slot-type scheduling is usually located in the first 4 symbols of a slot , and the number of symbols occupied by the physical shared channel of the slot-type scheduling can be 3-14 symbols, and the DMRS of the physical shared channel of the slot-type scheduling can be located on the second or third symbol of a time slot . Type B is used for the physical shared channel of non-slotted scheduling. Taking the physical shared channel of slotted scheduling corresponding to the physical shared channel of normal CP as an example, then the start symbol of the physical shared channel of non-slotted scheduling can be It is any symbol on the 0-12th symbol in the slot, and the number of symbols occupied by the physical shared channel of non-slot scheduling can be 2, 4 or 7 symbols. The DMRS of the physical shared channel of non-slot scheduling Can be located on the first symbol of a slot.

Optionally, if at least one physical shared channel includes multiple physical shared channels, each physical shared channel in the multiple physical shared channels has its corresponding DMRS, and the time domain positions of the DMRSs of different physical shared channels in the multiple physical shared channels Can be the same or different. In addition, the mapping types of different physical shared channels in at least one physical shared channel may be the same.

In a possible implementation manner, the time-domain resource information of one physical shared channel in the at least one physical shared channel may include a time slot offset, start symbol information, and symbol number. For example, the time-domain resource information of each physical shared channel in at least one physical shared channel includes a time slot offset, a start symbol, and a number of symbols.

The time slot offset included in the time domain resource information of a physical shared channel may indicate the time slot occupied by the physical shared channel relative to the time slot occupied by the control information used to schedule at least one physical shared channel. quantity. The start symbol information included in the time-domain resource information of a physical shared channel may indicate the start symbol of the occupied time slot of the physical shared channel. The number of symbols included in the time-domain resource information of a physical shared channel may indicate the number of symbols that the physical shared channel occupies in one time slot.

For example, taking at least one physical shared channel including two PDSCHs as an example, a time domain resource allocation list is shown in Table 1 below.

Table 1

In Table 1, K ₀ represents the time slot offset of the PDSCH (the time slot offsets of the two PDSCHs are the same). S ₀ represents the start symbol information of one of the PDSCHs (that is, PDSCH0) among the two PDSCHs, L ₀ represents the number of symbols of the PDSCH0; S ₁ represents the start symbol information of the other PDSCH (that is, PDSCH1) among the two PDSCHs , L ₁ represents the symbol number of the PDSCH1.

For example, taking at least one physical shared channel including two PDSCHs as an example, a time-domain resource allocation list may also be shown in Table 2 below.

Table 2

Different from the above Table 1, each of the row indexes 1 to 6 in the above Table 2 indicates the respective time domain resource information of PDSCH0 and PDSCH1, but each row index of

row indexes

7 and 8 only Indicates the time domain resource information of PDSCH0, but does not include the time domain resource information of PDSCH1.

In another possible implementation manner, the time-domain resource information of each physical shared channel in the first part of the at least one physical shared channel includes a time slot offset, start symbol information, and symbol number. The time-domain resource information of each physical shared channel in the second part of the at least one physical shared channel includes a time slot offset and a number of symbols. For the explanation of the time slot offset, start symbol information and number of symbols, please refer to the above. The first part of physical shared channels may include one or more physical shared channels, and the second part of physical shared channels may also include one or more physical shared channels. The first part of physical shared channels and the second part of physical shared channels may be all physical shared channels in at least one physical shared channel, or may be part of physical shared channels in at least one physical shared channel.

Optionally, the start symbol information of the physical shared channel B in the second part of the physical shared channels may be determined according to the start symbol information and the number of symbols of the physical shared channel A in the first part of the physical shared channels. For example, the start symbol of physical shared channel B is the next symbol of the end symbol of physical shared channel A. Wherein, the ending symbol of the physical shared channel A may be determined according to the starting symbol information and the number of symbols of the physical shared channel A.

For example, the first part of the physical shared channel includes PDSCH0, the start symbol of PDSCH0 is the second symbol in a time slot, and the number of occupied symbols is 3. The second part of the physical shared channel includes PDSCH1, and the start symbol of PDSCH1 may be the next symbol of the end symbol of PDSCH0, that is, the fifth symbol in the time slot.

For example, the second configuration information is directly carried in the RRC message, for example, the second configuration information is PDSCH time domain resource allocation list information element (PDSCH-timedomainallocationlist information element) information. Specifically, for example, the PDSCH time domain resource allocation addition (PDSCH-ToAddTimeDomainResourceAlloaction-r18) information in the PDSCH-timedomainallocationlist information element information configures the time domain resource allocation list. Specifically, for example, through the start and length indicator (start and length indicator, SLIV) configuration in PDSCH-ToAddTimeDomainResourceAlloaction-r18. Or for example, configure the time domain resource information of the first part of the physical shared channel in at least one physical shared channel through the PDSCH-timedomainallocationlist information element, and configure the second part of the physical shared channel in the at least one physical shared channel through PDSCH-ToAddTimeDomainResourceAlloaction-r18 Time domain resource information.

It should be noted that S602 is an example in which the network device configures the time-domain resource allocation list for the terminal device, but actually there are multiple ways for the terminal device to obtain the time-domain resource allocation list. For example, the terminal device may be preconfigured with the time-domain resource allocation list, or the time-domain resource allocation list may also be predefined by a protocol.

As an example, the first configuration information and the second configuration information may be sent in the same message, and the first configuration information and the second configuration information may also be sent in different messages, and the types of the two messages may be the same, for example , both the first configuration information and the second configuration information are sent through RRC messages, or the types of the two messages are different, for example, the first configuration information is sent through RRC messages, and the second configuration information is sent through media access control (media access control) , MAC) control element (control element, CE) message sending, which is not limited in this embodiment of the present application.

It should be noted that the network device may perform S601 first and then S602, or the network device may perform S601 and S602 at the same time, or the network device may perform S602 first and then S601, which is not limited in this embodiment of the present application.

S603. The network device sends control information to the terminal device. Correspondingly, the terminal device receives the control information from the network device. The control information is used to schedule N physical shared channels including M first physical shared channels. When N is equal to M, the first field in the control information carries first indication information, and the first indication information is used to indicate N Modulation and coding scheme (MCS) of a physical shared channel. When N is greater than M, the first field carries second indication information, and the second indication information is used to indicate first HARQ process information of K second physical shared channels.

It should be noted that the value of N is less than or equal to the value of L mentioned above.

Exemplarily, the control information is, for example, DCI. If the control information is used to schedule downlink data, the control information may be DCI1_0, DCI1_1 and DCI1_2. If the control information is used to schedule uplink data, the control information may be DCI0_0, DCI0_1 and DCI0_2.

The control information includes a first field. For example, the control information is DCI, and the first field may include the MCS field in the DCI, or may also include other fields in the DCI except the MCS field. Alternatively, the first field may also be a newly added field in the DCI of the 3GPP protocol version, which is not limited in this embodiment of the present application.

The control information can schedule retransmission or new transmission of N physical shared channels. Wherein, the N physical shared channels include M first physical shared channels, and M is a positive integer. The value of M is a preset value, and the value of M may be pre-configured in the network device or specified by a protocol. In addition, the value of M may also be preconfigured in the terminal device. For example, the value of M is 1.

Optionally, the N physical shared channels may also include K second physical shared channels, where K is a positive integer. It should be noted that the first physical shared channel and the second physical shared channel belong to the same type of physical shared channel, for example, both the first physical shared channel and the second physical shared channel are PDSCH, or the first physical shared channel and Both the second physical shared channels are PUSCH. Alternatively, both the first physical shared channel and the second physical shared channel are PSSCHs.

When the size relationship between N and M is different, the indication information carried by the first field is also different, and the following will introduce it according to the situation.

Case 1, N is equal to M.

If N is equal to M, the first field may carry the first indication information. The first indication information is used to indicate or include the MCSs of the N physical shared channels.

If M is 1, then the first indication information is used to indicate the MCS of the physical shared channel.

If M is greater than 1, the first indication information may respectively indicate the MCS of each physical shared channel in the N physical shared channels. In the case that the MCSs of any two physical shared channels in the N physical shared channels are the same, the first indication information may only indicate the MCS of any one of the N physical shared channels, which saves the first The number of bits occupied by the indication information, or, even if the MCSs of any two physical shared channels among the N physical shared channels are the same, the first indication information may respectively indicate the respective MCSs of the N physical shared channels.

In a possible implementation manner, when N is equal to M, the N physical shared channels are equivalent to M first physical shared channels. At this time, the control information may also include the third HARQ process number. The third HARQ process number is used to determine the respective HARQ process numbers of the N physical shared channels.

If M is 1, the third HARQ process number may indicate or include the HARQ process numbers of the N physical shared channels.

If M is greater than 1, the third HARQ process number may indicate or include the respective HARQ process numbers of the N physical shared channels, for example, the third HARQ process number indicates the respective HARQ process numbers of the N physical shared channels in an explicit manner. Alternatively, the third HARQ process number may indicate or include the HARQ process number of the first part of the N physical shared channels, for example, the first HARQ process number explicitly indicates the first part of the N physical shared channels. The HARQ process ID of the channel. In this case, the HARQ process numbers of the second part of the physical shared channels among the N physical shared channels may be determined according to the HARQ process numbers of the first part of the physical shared channels and the first rule. The first rule is used to indicate the strategy for determining the HARQ process number of another part of the N physical shared channels. For example, the first rule is to determine the HARQ process number of the first part of the physical shared channel according to the first incremental step value Increment the maximum process number in . The first rule may be specified by the protocol, or pre-configured in the terminal device. The value of the first incremental step value may be specified by the protocol, or pre-configured in the terminal device.

For example, the value of M is 3, the value of the first incremental step is 1, and the M first physical shared channels are physical shared channel A, physical shared channel B, and physical shared channel C, respectively. The physical shared channel A belongs to the first part of the physical shared channel, and the HARQ process number of the physical shared channel A is 1; the physical shared channel B and the physical shared channel C belong to the second part of the physical shared channel, and the value of the first incremental step value is 1 . The HARQ process numbers of physical shared channel B and physical shared channel C are obtained by incrementing the HARQ process number of physical shared channel A by 1. For example, the HARQ process number of physical shared channel B is 2, and the HARQ process number of physical shared channel B The number is 3.

Exemplarily, no matter the value of M is equal to 1 or greater than 1, the third HARQ process number may be carried by the second field included in the control information. The second field and the first field can be the same field, for example, both are MCS fields; or, the second field and the first field can also be different fields, for example, the first field is an MCS field, and the second field is the HARQ field.

In a possible implementation manner, the control information may further include third indication information, where the third indication information is used to indicate or include RVs of N physical shared channels, where the third indication information includes N bits.

Specifically, if N is 1, the third indication information includes 1 bit, which can indicate the RV of the physical shared channel; if N is greater than 1, and N physical shared channels do not share the RV, then the third indication information N bits can respectively indicate the RV of N physical shared channels, that is, one bit is used to indicate the RV of one physical shared channel, or, if N is greater than 1, and N physical shared channels can share the RV, the third indication information N bits can indicate the RV of any physical shared channel, and the values of the N bits are different, and the third indication information can respectively indicate multiple RVs of a physical shared channel. In this case, since the N physical shared channels is a shared RV, so it is equivalent to that the third indication information indicates the RV of each physical shared channel in the N physical shared channels.

Exemplarily, if the value of the third indication information is different, the corresponding RVs of at least one physical shared channel may also be different. A first correspondence between the respective RVs of the channels. The network device may determine the value of the third indication information from the first correspondence according to the respective RVs of the N physical shared channels currently to be scheduled. Correspondingly, after receiving the third indication information, the terminal device may also determine the respective RVs of the N physical shared channels from the first correspondence according to the value of the third indication information.

For example, assuming that the value of N is 2 and N physical shared channels share the RV as an example, the RV indicated by the 2 bits in the third indication information may refer to Table 3.

table 3

2个比特的取值2 bit value	RVRV
0000	00
0101	11
1010	22
1111	33

As shown in Table 3 above, if the network device determines that the RV corresponding to the two physical shared channels is 3, it may determine that the value of the third indication information is 11. Correspondingly, after receiving the control information, the terminal device may determine from Table 2 that the RVs of the two physical shared channels are both 3 according to the value of the third indication information.

Case 2, N is greater than M.

If N is greater than M, it means that the N physical shared channels include M first physical shared channels and K second physical shared channels, and the first field may carry the second indication information. The second indication information is used to indicate or include first HARQ process information of the K second physical shared channels. The first HARQ process information is used to determine the HARQ process number of each second physical shared channel in the K second physical shared channels. Optionally, the control information further includes first HARQ process numbers of the M first physical shared channels, and the first HARQ process numbers are used to indicate or include the HARQ process numbers of the M first physical shared channels. For the manner indicated by the first HARQ process number, refer to the foregoing content about the third HARQ process number. The first HARQ information may be carried by the second field included in the control information, and the meaning of the second field may refer to the foregoing.

The first HARQ process information may include the second HARQ process number or the offset of the second HARQ process number, and the second HARQ process number and the offset of the second HARQ process number will be introduced respectively below.

1. The second HARQ process number.

The second HARQ process numbers included in the first HARQ process information may be used to indicate or include the HARQ process numbers of the K second physical shared channels.

If K is 1, the second HARQ process number may indicate or include the HARQ process number of the second physical shared channel.

If K is greater than 1, then the second HARQ process number may indicate or include the respective HARQ process numbers of the K second physical shared channels, for example, the second HARQ process number explicitly indicates the respective HARQ process numbers of the K second physical shared channels HARQ process ID. Alternatively, the second HARQ process number may indicate or include the HARQ process numbers of the third part of the second physical shared channels among the K second physical shared channels. The HARQ process numbers of the fourth part of the second physical shared channels in the K second physical shared channels may be determined according to the HARQ process numbers of any second physical shared channels in the third part of the second physical shared channels. The third part of the second physical shared channels may include one or more second physical shared channels, and the fourth part of the physical shared channels may also include one or more second physical shared channels. The third part of the second physical shared channel and the fourth part of the second physical shared channel may be all the physical shared channels in the K second physical shared channels, or may be part of the second physical shared channels in the K second physical shared channels. shared channel.

For example, the HARQ process numbers of the fourth part of the second physical shared channels among the K second physical shared channels may be determined according to the third part of the second physical shared channels and the second rule. Wherein, the second rule is, for example, to increment the corresponding maximum HARQ process number in the third part of the second physical shared channel according to the second increment step value. The second rule and the first rule may be the same or different. The meaning of the second rule can refer to the meaning of the first rule. The values of the second incremental step value and the first incremental step value may be the same or different. For the setting method of the second incremental step value, please refer to the above.

2. The offset of the second HARQ process number.

The offset of the second HARQ process number included in the first HARQ process information may indicate or include the offset of the HARQ process numbers of the K second physical shared channels relative to the first HARQ process number.

(1) If K is 1, the offset of the second HARQ process number indicates or includes the offset of the HARQ process number of the second physical shared channel relative to the first HARQ process number.

If the first HARQ process number includes multiple HARQ process numbers, the offset of the second HARQ process number may indicate or include the HARQ process number of a second physical shared channel relative to the HARQ process number of the target first physical shared channel offset. The target first physical shared channel is, for example, the first physical shared channel that satisfies the first condition among the multiple first physical shared channels, and the first condition is, for example, that the HARQ process number of the target first physical shared channel is that the multiple first physical shared channels The HARQ process number with the largest value among the HARQ process numbers, or the first condition is, for example, that the HARQ process number of the target first physical shared channel is the HARQ process number with the smallest value among multiple first physical shared channels.

For example, M first physical shared channels include physical shared channel A and physical shared channel B, the HARQ process number corresponding to physical shared channel A is 3, the HARQ process number corresponding to physical shared channel B is 4, and the K second physical shared channels The channel includes a physical shared channel C, the target first physical shared channel is a physical shared channel B, and the offset of the second HARQ process number includes the HARQ process number of the physical shared channel C relative to the HARQ process number of the target first physical shared channel The offset is 3, so the terminal device can determine that the HARQ process number of the physical shared channel C is 7 according to the offset of the second HARQ process number.

(2), if K is greater than 1, the offset of the HARQ process number may indicate or include the relative value of each HARQ process number in the HARQ process numbers of the fifth part of the second physical shared channel in the K second physical shared channels Offset from the first HARQ process number. Alternatively, the offset of the second HARQ process number includes the offset of the HARQ process numbers of all the second physical shared channels in the K second physical shared channels relative to the first HARQ process number. The above two cases of the offset of the HARQ process number are respectively introduced below. Wherein, the fifth part of the second physical shared channels may include one or more second physical shared channels, and the fifth part of the second physical shared channels is a part of the K second physical shared channels. The fifth part of the second physical shared channel may or may not be completely the same as the third part of the aforementioned second physical shared channel. Not exactly the same. It can be understood that at least one of the second physical shared channels included in the fifth part is different from the second physical shared channels included in the second physical shared channel in the third part.

In case 1, the offset of the second HARQ process ID indicates or includes offsets of the HARQ process IDs of the fifth part of the second physical shared channels among the K second physical shared channels relative to the first HARQ process ID.

If the first HARQ process number only includes the HARQ process number of one first physical shared channel, then the offset of the second HARQ process number indicates or includes the fifth part of the second physical shared channel among the K second physical shared channels The offsets of the HARQ process numbers of the channels relative to the HARQ process numbers of the first physical shared channel.

For example, the HARQ process number of the first HARQ process number including the physical shared channel A is 2, the K second physical shared channels include the physical shared channel B, the physical shared channel C and the physical shared channel D, and the fifth part of the second physical shared channel The physical shared channel B and the physical shared channel C are included, and the offsets of the second HARQ process numbers are 2 and 3 respectively. After receiving the control information, the terminal device can determine the HARQ process number of the physical shared channel B as 4 and the HARQ process number of the physical shared channel C as 5 according to the offset between the first HARQ process number and the second HARQ process number .

If the first HARQ process number indicates or includes the respective HARQ process numbers of a plurality of first physical shared channels, then the offset of the HARQ process number may indicate or include the fifth part of the second physical shared channels among the K second physical shared channels. Offsets of the HARQ process numbers of the shared channel relative to the HARQ process numbers of the target first physical shared channel among the multiple first physical shared channels. For the meaning of the target first physical shared channel, refer to the foregoing.

Exemplarily, the HARQ process number of the sixth part of the second physical shared channel among the K second physical shared channels can be determined according to the HARQ process number of the fifth part of the second physical shared channel and the third rule. The third rule is, for example, , according to the third increment step value, increment the maximum process number among the HARQ process numbers of the fifth part of the second physical shared channel. The content of the third rule may refer to the content of the first rule above, and the content of the third incremental step value may refer to the content of the first incremental step value above. Wherein, the sixth part of physical shared channels may also include one or more second physical shared channels. The fifth part of the second physical shared channel and the sixth part of the second physical shared channel may be all the physical shared channels in the K second physical shared channels, or may be part of the second physical shared channels in the K second physical shared channels. shared channel. The sixth part of the second physical shared channel may or may not be completely the same as the foregoing fourth part of the second physical shared channel. For meanings that are not exactly the same, please refer to the previous text.

For example, the first HARQ process number includes the HARQ process number 2 of the physical shared channel A and the HARQ process number 3 of the physical shared channel B, and the fifth part of the second physical shared channel in the K second physical shared channels includes the physical shared channel channel C and physical shared channel D, and the offset of the second HARQ process number includes an offset of 4 between the physical shared channel C and the HARQ process number of the target first physical shared channel (for example, physical shared channel A). The third rule is to increment the maximum process number among the HARQ process numbers of the fifth part of the second physical shared channel according to the third increment step value (for example, 1). After receiving the control information, the terminal device can determine the HARQ process number of the physical shared channel C as 6 according to the offset between the first HARQ process number and the second HARQ process number, and the terminal device can determine the HARQ process number of the physical shared channel C The number is incremented, so that the HARQ process number of the physical shared channel D is determined to be 7.

In case 2, the offset of the HARQ process number indicates or includes the offsets of the HARQ process numbers of all the second physical shared channels among the K second physical shared channels relative to the first HARQ process number.

If the first HARQ process number only indicates or includes the HARQ process number of a first physical shared channel, then the offset of the HARQ process number may indicate or include all the second physical shared channels in the K second physical shared channels The HARQ process IDs of the HARQ process IDs are respectively relative to the offsets of the HARQ process IDs of the first physical shared channel.

For example, the HARQ process number of the first HARQ process number including the physical shared channel A is 2, the K second physical shared channels include the physical shared channel B and the physical shared channel C, and the offsets of the second HARQ process numbers are respectively 2 and 3. After receiving the control information, the terminal device can determine the HARQ process number of the physical shared channel B as 4 and the HARQ process number of the physical shared channel C as 5 according to the offset between the first HARQ process number and the second HARQ process number .

If the first HARQ process number indicates or includes the respective HARQ process numbers of multiple first physical shared channels, then the offset of the HARQ process number indicates or includes all the second physical shared channels in the K second physical shared channels Offsets of the HARQ process numbers relative to the HARQ process numbers of the target first physical shared channel among the multiple first physical shared channels. For the meaning of the target first physical shared channel, refer to the foregoing.

For example, the first HARQ process number includes the HARQ process number 2 of the physical shared channel A and the HARQ process number 3 of the physical shared channel B, the K second physical shared channels include the physical shared channel C and the physical shared channel D, and the first The offsets of the two HARQ process numbers are 4 and 5 respectively, and the target first physical shared channel is the physical shared channel B. After receiving the control information, the terminal device can determine the HARQ process number of the physical shared channel C as 7 and the HARQ process number of the physical shared channel D as 8 according to the offset between the first HARQ process number and the second HARQ process number .

In a possible implementation manner, when N is greater than M, the first field may further carry one or more of the following 1 to 3.

1. A new data indicator (new data indicator, NDI) of at least one second physical shared channel among the K second physical shared channels. The NDI of one of the second physical shared channels is used to indicate that the second physical shared channel is used for new transmission or retransmission.

If K is greater than 1, then the first field may carry the NDI of each second physical shared channel in the seventh part of the K second physical shared channels, the eighth part of the K second physical shared channels The NDI of the second physical shared channel may be the same as the NDI of any second physical shared channel in the seventh part of the second physical shared channel. Wherein, the seventh part of second physical shared channels may include one or more second physical shared channels, and the eighth part of physical shared channels may also include one or more second physical shared channels. The seventh part of the second physical shared channel and the fourth part of the second physical shared channel may be all the physical shared channels in the K second physical shared channels, or may be part of the second physical shared channels in the K second physical shared channels. shared channel. The second physical shared channel in the seventh part may be the same as the second physical shared channel in the third part above, or may not be completely the same, and the second physical shared channel in the eighth part may be the same as the second physical shared channel in the fourth part above, or Not exactly the same.

Optionally, the control information may further include the NDI of at least one first physical shared channel among the M first physical shared channels, and the NDI of the at least one first physical shared channel may be carried in the third field included in the control information. The third field and the first field may be the same field, or the third field and the first field may be different fields. For example, the first field is the MCS field, and the third field is the NDI field.

Optionally, the NDIs of the N physical shared channels are all the same. In this case, the first field may not need to carry the NDI of at least one of the K second physical shared channels. In this case, The third field still needs to carry at least one NDI of the first physical shared channel.

2. The offset of the MCS index of the N physical shared channels.

If the MCSs of the N physical shared channels are all the same, the offsets of the MCS indexes of the N physical shared channels may only indicate or include one MCS index offset. The offset of the MCS index can be understood as the offset between the MCS index used by the transmission unit carried by any physical shared channel and the MCS index used in the last transmission of the transmission unit.

If the MCSs of the N physical shared channels are not completely the same, that is, the MCSs of at least two physical shared channels are different, the offset of the MCS index may indicate or include the offset of the N MCS indices. The offset of one MCS index refers to the offset between the MCS index used by the transmission unit carried by one of the N physical shared channels and the MCS index used for the last transmission of the transmission unit.

Taking the transmission unit as TB0 as an example, if the control information is used to schedule retransmission of TB0 on a physical shared channel, then the last transmission refers to the last transmission of the TB0. For example, if the control information schedules retransmission of TBO for the first time on a physical shared channel, then the last transmission may be a new transmission of TBO. If the control information schedules the second retransmission of TBO on a physical shared channel, then the last transmission may be the first retransmission of TBO.

As an example, the last transmission of the transmission units carried by the N physical shared channels uses the same MCS. In this way, during the last transmission, even if the terminal device cannot correctly obtain the MCS used for the last transmission of the transmission unit carried by a certain physical shared channel, it can The adopted MCS demodulates a certain physical shared channel.

3. The CBGFI of at least one second physical shared channel among the K second physical shared channels.

The CBGFI of one of the second physical shared channels is used to indicate whether the transmission unit carried on the second physical shared channel is soft-combined with the transmission unit transmitted last time. The meaning and method of soft merger can be referred to above.

For example, if the communication system adopts a CBG-based transmission scheme, then the first field may also carry CBGFI of at least one second physical shared channel among the aforementioned K second physical shared channels. Optionally, the network device may also configure whether to enable the CBGFI field for the terminal device through the fifth configuration information. If the terminal device enables the CBGFI field, the CBGFI in the control information may carry the CBGFI of at least one first physical shared channel among the M first physical shared channels.

For example, the network device may indicate to the terminal device whether to enable the CBGFI field through the code block group flush indication (codeBlockGroupFlushIndicator) signaling in the PDSCH-CodeBlockGroupTransmission signaling of the RRC message. For example, the value of the CBGFI signaling is 1, which instructs the terminal device to enable the CBGFI field.

Specifically, if K is greater than 1, the first field may carry the CBGFI of the ninth part of the second physical shared channels among the K second physical shared channels. Optionally, the CBGFI of the tenth part of the second physical shared channels among the K second physical shared channels may be the same as the CBGFI of the ninth part of the second physical shared channels. Alternatively, the first field may carry the CBGFIs of the K second physical shared channels. The tenth part of the second physical shared channel and the ninth part of the second physical shared channel may be part of the second physical shared channels in the K second physical shared channels, or may be all the second physical shared channels in the K second physical shared channels. Physical shared channel. The second physical shared channel in the ninth part may be the same as or not completely the same as the third physical shared channel mentioned above. The second physical shared channel in the tenth part may be the same as or not completely the same as the fourth physical shared channel mentioned above.

If N is greater than M, and the first field does not carry the offsets of the MCS indexes of the N physical shared channels, in other words, the first field does not carry the offsets of the MCS indexes of the N physical shared channels, optionally, the N The MCSs adopted by the transmission units carried on the physical shared channels respectively are the same, and are the same as the MCSs adopted by the last transmission of the transmission units carried by the N physical shared channels respectively. Therefore, when scheduling retransmissions, the network device does not need to indicate the MCS of the N physical shared channels separately, and the terminal device can use the MCS adopted by the transmission unit carried by the N physical shared channels for the last transmission Shared channel for demodulation. If the terminal device misses any piece of control information in the previous transmission of the N physical shared channels, the network device may also determine the MCS adopted by the corresponding physical shared channels.

In another possible implementation, if the communication system adopts a non-CBG transmission scheme (in a non-CBG transmission scheme, the transmission unit is not CBG, and the transmission unit may be, for example, TB or CB, etc.), the first field may be Carrying the NDI of at least one second physical shared channel in the K second physical shared channels and/or the offset of the MCS index of the N physical shared channels.

In the following downlink scenario, the control information is DCI, the first field is the MCS field, the MCS field includes 5 bits, M first physical shared channels include PDSCH0, and K second physical shared channels include PDSCH1 as an example, the MCS field Make an introduction. The MCS field may specifically be any one of the following (a) to (d). In this embodiment, the DCI includes a HARQ field, and the HARQ field is used to indicate the HARQ process number of PDSCH0.

(a), 1 bit in the MCS field is used to indicate the NDI of PDSCH1, and the remaining 4 bits in the MCS field are used for the HARQ process number of PDSCH1 (an example of the second indication information).

(b), 1 bit in the MCS field is used to indicate the NDI of PDSCH1, and 2 bits in the MCS field are used for the offset of the HARQ process number of PDSCH1 relative to the HARQ process number of PDSCH0 (an example of the second indication information ), the 2 bits in the MCS field are used to indicate the offset between the MCS index of the transmission unit carried by PDSCH1 and the MCS index of the previous transmission of the transmission unit and/or the difference between the MCS index of the transmission unit carried by PDSCH0 and the previous The offset between the MCS indices of this transport unit at a time.

If the MCS of the transmission unit carried by PDSCH1 is the same as the MCS of the transmission unit carried by PDSCH0, then the 2 bits in the MCS field can directly indicate the difference between the MCS index of the transmission unit carried by PDSCH1 and the MCS index of the transmission unit last transmitted. or the offset between the MCS index of the transmission unit carried by PDSCH0 and the MCS index of the last transmission of the transmission unit. If the MCS of the transmission unit carried by PDSCH1 is different from the MCS of the transmission unit carried by PDSCH0, the 2 bits in the MCS field can indicate the difference between the MCS index of the transmission unit carried by PDSCH0 and the MCS index of the last transmission of the transmission unit or the offset between the MCS index of the transmission unit carried by PDSCH1 and the MCS index of the transmission unit last transmitted by PDSCH0.

(c), 2 bits in the MCS field are used to indicate the offset of the HARQ process number of PDSCH1 relative to the HARQ process number of PDSCH0 (an example of the second indication information), and 3 bits in the MCS field are used to indicate PDSCH1 The offset between the MCS index of the carried transmission unit and the MCS index of the last transmission of the transmission unit and/or the offset between the MCS index of the transmission unit carried by PDSCH0 and the MCS index of the last transmission of the transmission unit displacement.

(d), 3 bits in the MCS field are used for the offset of the HARQ process number of PDSCH1 relative to the HARQ process number of PDSCH0 (an example of the second indication information), and 2 bits in the MCS field are used to indicate the HARQ process number of PDSCH1 The offset between the MCS index of the carried transmission unit and the MCS index of the last transmission of the transmission unit and/or the offset between the MCS index of the transmission unit carried by PDSCH0 and the MCS index of the last transmission of the transmission unit quantity.

In another possible implementation, if the communication system supports a CBG-based transmission scheme, then the communication system uses CBG as the transmission unit for transmission, then the first field may also carry at least CBGFI of a second physical shared channel. In this case, the first field may carry the NDI of at least one second physical shared channel among the K second physical shared channels, the offset of the MCS index of the N physical shared channels, and the K second physical shared channel One or more of the CBGFIs of the at least one second physical shared channel.

Taking the first field as the MCS field, the MCS field including 5 bits, the M first physical shared channels including PDSCH0, and the K second physical shared channels including PDSCH1 as an example, the MCS field will be introduced as an example. The MCS field may specifically be any one of the following (e) to (g).

(e) 1 bit in the MCS field is used to indicate the NDI of PDSCH1, and 4 bits in the MCS field are used to indicate the HARQ process number of PDSCH1 (an example of the second indication information).

(f), 1 bit in the MCS field is used to indicate the NDI of PDSCH1, 1 bit in the MCS field is used to indicate the CBGFI of PDSCH1, and 3 bits in the MCS field are used to indicate that the HARQ process number of PDSCH1 is relative to the HARQ process of PDSCH0 The offset of the number (an example of the second indication information).

(g), 1 bit in the MCS field is used to indicate the NDI of PDSCH1, and 1 bit in the MCS field is used to indicate the offset between the MCS index of the transmission unit carried by PDSCH1 and the MCS index of the last transmission of the transmission unit The 3 bits in the MCS field are used to indicate the offset of the HARQ process number of PDSCH1 relative to one HARQ process number in the first HARQ process number (a kind of second indication information).

Optionally, the CBGFIs of the N physical shared channels may be the same. In this case, the control information may indicate the CBGFI of one physical shared channel. For example, if the control information is DCI, the communication system adopts the CBG transmission scheme, the M first physical shared channels include PDSCH0, the K second physical shared channels include PDSCH1, and the first field is the MCS field as an example. In this case, The MCS field may not need to indicate the CBGFI of PDSCH1, and the CBGFI field in the DCI may indicate the CBGFI of PDSCH0. Correspondingly, the terminal device can determine the CBGFI of PDSCH0 and PDSCH1 according to the CBGFI field in the DCI.

In a possible implementation manner, if N is greater than M, the control information further includes third indication information. The third indication information is used to indicate the RV of the N physical shared channels, and the third indication information includes N bits, and the N bits are respectively used to indicate the RVs of the N physical shared channels, that is, each bit in the N bits It is used to indicate the RV of one physical shared channel among the N physical shared channels. In this way, the RV of each physical shared channel can be flexibly indicated.

Optionally, if the value of the third indication information is different, the RVs of the N physical shared channels are also different, and the terminal device and the network device may be pre-configured with the value of the third indication information and the RV of the N physical shared channels. The second corresponding relationship between. The network device may determine the value of the third indication information according to the second correspondence. Correspondingly, after receiving the control information, the terminal device may determine the respective RVs of the N physical shared channels according to the third indication information in the control information and the second corresponding relationship.

For example, the relationship between RVs of a physical shared channel corresponding to 1 bit in the third indication information is shown in Table 4 below.

Table 4

1个比特的取值1 bit value	冗余版本 redundant version
00	00
11	22

For example, the value of N is 2. If the network device determines that the RV of one physical shared channel is 2 and the RV of another physical shared channel is 0, then the network device can determine that the value of the third indication information can be based on Table 4 above. to "10". After receiving the third indication information, the terminal device can determine that the RV of one of the two physical shared channels is 2 and that the RV of the other physical shared channel is 0 according to the third indication information and the contents of Table 4 above.

In another possible implementation manner, if N is greater than M, and N physical shared channels share the RV, then N bits of the third indication information may be used to indicate any one of the N physical shared channels, such that When N is equal to 2 or greater than 2, N bits may indicate more redundancy versions.

Optionally, if the communication system supports a CBG-based transmission scheme, the control information may also include CBGTI. The CBGTI is used to indicate the CBGs for N physical shared channel retransmissions. Optionally, the CBGTI may be carried by the fourth field in the control information. The fourth field and the first field above may be the same field or different fields, which is not limited in this embodiment of the present application. The fourth field is, for example, the CBGTI field.

End devices may be pre-configured to support CBG-based transport. For example, the network device sends sixth configuration information to the terminal device. The sixth configuration information includes fifth indication information, where the fifth indication information is used to instruct the terminal device to enable CBG-based transmission.

For example, the sixth configuration information is carried in code block group transmission (codeblock group transmission) signaling of the RRC message. If the terminal device enables CBG-based transmission, in this case, the control information also includes the CBGTI field accordingly. Taking the control information as DCI1_1 as an example, if the terminal device is enabled for CBG-based transmission, the DCI1_1 also includes the CBGTI field.

Optionally, the network device may also configure the maximum number of code block groups included in each transport block (maxCodeBlockGroupsPerTransportBlock) for the terminal device through the seventh configuration information.

Exemplarily, the seventh configuration information is carried in the codeblockgrouptransmission signaling of the RRC message, and the network device can configure the maximum number of CBGs for each TB for the terminal device through the maxCodeBlockGroupsPerTransportBlock parameter in the codeblockgrouptransmission signaling. The maximum number of CBGs per TB determines the size of the CBGTI field in the control information. For example, maxCodeBlockGroupsPerTransportBlock=n8, that is, the CBGTI field includes 8 bits.

Optionally, the control information may also include the first row index. The first row index belongs to at least one row index in the time domain resource allocation list. The index in the first row is used to indicate the number of physical shared channels indicated in the time domain resource allocation list. The meaning of the time domain resource allocation list can be referred to above. For example, the first row index is 4 in the above table 1, and the fourth row in the above table 1 corresponds to indicating the time domain resource information of the two physical shared channels, which is equivalent to indicating that the first row index indicates the two physical shared channels .

As an example, the first row index is carried by the fifth field in the control information. The fifth field and the first field may be the same field or different fields, which is not limited in this embodiment of the present application. The fifth field is, for example, a time domain resource assignment (time domain resource assignment, TDRA) field.

Optionally, the control information further includes sixth indication information, where the sixth indication information is used to indicate frequency domain resource information of the N physical shared channels. Exemplarily, the sixth indication information may be carried by a frequency domain resource assignment (frequency domain resource assignment, FDRA) field in the control information. Wherein, the resource information in the frequency domain is, for example, the number of resource blocks (resource block, RB). The frequency domain resource information of the N physical shared channels is the same, or the frequency domain resource information of any two physical shared channels is different, which is not limited in this embodiment of the present application.

As an example, the control information may schedule N physical shared channels in one time slot, or may schedule N physical shared channels in different time slots, which is not limited in this embodiment of the present application. If the control information schedules N physical shared channels in different time slots, then the above time domain resource allocation list may further include the respective corresponding time slots in at least one physical shared channel.

The specific content of the control information is introduced above. After receiving the control information, the terminal device also determines the respective HARQ process numbers of the N physical shared channels. Since the first field has a different size relationship between N and M, the indication information carried by the control information is different, and naturally the information obtained by the terminal device by parsing the control information is also different. Therefore, before parsing the control information, the terminal device may first determine the magnitude relationship between N and M. As discussed above, the value of M is preset. Therefore, the terminal device can determine the size relationship between N and M only by determining the value of N. The following describes how the terminal device determines the value of N.

When the information contained in the control information is different, the way for the terminal device to determine the value of N is also different, which will be introduced respectively below.

Mode 1, the control information includes the CBGTI. The terminal device determines the value of N according to the CBGTI and the maximum number of schedulable physical shared channels.

When the maximum number of schedulable physical shared channels of control information is determined, the maximum number of physical shared channels that can be indicated by CBGTI is also determined. For example, the maximum number of schedulable physical shared channels is L, then CBGTI The maximum number of physical shared channels that can be indicated is L. The terminal device can determine how many bits each physical shared channel occupies in the CBGTI according to the number of bits of the CBGTI and the maximum number of physical shared channels that can be indicated by the control information, and then according to each physical shared channel corresponding to each physical shared channel in the CBGTI The value of the bit determines the value of N.

For example, the CBGTI includes 8 bits, and the maximum number of schedulable physical shared channels is 2, which means that the first 4 bits in the CBGTI indicate one PDSCH, and the last 4 bits in the CBGTI indicate another PDSCH. Exemplarily, if the terminal device determines that the last 4 bits in the CBGTI are all 0, that is, "0000", it means that the CBGTI only schedules one PDSCH this time, and accordingly, determine that the value of N is 1.

The first manner above is applicable to the case where the communication system supports a CBG-based transmission scheme. Moreover, in the first manner, the network device does not need to separately indicate the value of N to the terminal device, which can relatively reduce the interaction between the network device and the terminal device.

Mode 2, the control information includes the index of the first row. The terminal device determines the number of physical shared channels indicated by the index in the first row from the time domain resource allocation list, and determines the value of N.

For the meaning of the first line index and the time domain resource allocation list, please refer to the above. The terminal device can determine the index in the first row, and the corresponding physical shared channel time domain resources in the time domain resource allocation list can also determine the number of physical shared channels scheduled this time, so as to determine the selection of N value.

For example, taking the time domain resource allocation list as the above Table 2 as an example, the first row index in the control information is 1, and the terminal device determines that the first row index corresponds to the time domain resource allocation list according to the first row index. 2 physical shared channels, so it can be determined that the value of N is 2.

Optionally, the terminal device may also determine the time domain resource information of each of the N physical shared channels from the time domain resource allocation list according to the first row index.

For example, the first row index is 4 in Table 2, and when the DMRS-type (type) A-position is 2, and the PDSCH mapping type is type A, the terminal device allocates resources from the time domain resource allocation list according to the first row index The time-domain resource information of two physical shared channels is determined in . Please refer to FIG. 7 , which is a schematic diagram of time-frequency resource configuration of the two physical shared channels provided by the embodiment of the present application. The abscissa in Figure 7 represents a symbol on a slot (symbol in a slot), the ordinate represents a sub-carrier (sub-carrier), and the DMRS is located on symbol 2 of the slot. In FIG. 7 , the frequency domain resources of PDSCH0 and PDSCH1 are the same as an example. In this case, the number of RBs on the symbol occupied by PDSCH0 is the same as the number of RBs on the symbol occupied by PDSCH1 . In Figure 7, each physical shared channel occupies 3 RBs (each RB is composed of 12 resource elements (resource element, RE), that is, each symbol in Figure 7 contains 36 REs. PDSCH0 is used to carry TB1 , PDSCH1 is used to bear TB2. In Figure 7, the start symbol of PDSCH0 is 2, and the number of symbols occupied is 7, and the start symbol of PDSCH1 is 9, and the number of symbols occupied is 5.

The second manner above is applicable to the case where the communication system adopts a CBG-based transmission scheme, and is also applicable to the case where the communication system adopts a non-CBG-based transmission scheme.

Mode 3, the control information includes the index of the first row and the CBGTI. The terminal device can determine the value of N according to the CBGTI.

In this case, the control information includes the first row index and the CBGTI, and the terminal device can determine the value of N according to the CBGTI, and the manner of determining the value of N according to the CBGTI can refer to the foregoing.

After the terminal device determines the size relationship between N and M, it can correspondingly determine the HARQ process numbers of the N physical shared channels from the control information. If the contents of the control information are different, the manners for the terminal equipment to determine the respective HARQ processes of the N physical shared channels are also different, which will be introduced respectively below.

Case 1, N is equal to M.

If M is 1, and the control information indicates or includes the first HARQ process number of a physical shared channel. In this case, the terminal device may directly determine the HARQ process number of the physical shared channel according to the first HARQ process number.

If M is greater than 1, and the first HARQ process number indicates or includes the respective HARQ process numbers of the N physical shared channels. In this case, the terminal device can obtain the respective HARQ process numbers of the N physical shared channels by analyzing the first HARQ process number.

If M is greater than 1, and the first HARQ process number indicates or includes the HARQ process numbers of the first part of the N physical shared channels. In this case, the terminal device can analyze the first HARQ process number, and can obtain the HARQ process numbers of the first part of the N physical shared channels. The terminal device may determine the HARQ process numbers of the second part of the physical shared channels among the N physical shared channels according to the first rule and the HARQ process numbers of the first part of the physical shared channels. For the meanings of the first part of the physical shared channel and the second part of the physical shared channel, reference may be made to the foregoing.

Optionally, if the control information further includes third indication information, the terminal device may determine the respective RVs of the N physical shared channels according to the third indication information.

Optionally, the terminal device may determine the respective MCSs of the N physical shared channels according to the first indication information in the control information.

Case 2, N is greater than M.

1. The first HARQ process information indicated by the second indication information is the second HARQ process number.

If K is 1, the terminal device may determine the HARQ process number of the second physical shared channel according to the first indication information.

If K is greater than 1, and the second HARQ process number indicates the respective HARQ process numbers of the K second physical shared channels, then the terminal device can determine the respective HARQ processes of the K second physical shared channels according to the second indication information Number.

If K is greater than 1, and the HARQ process number is the HARQ process number of the third part of the second physical shared channel among the K second physical shared channels, then the terminal device can determine the third part of the second physical shared channel according to the second indication information. HARQ process ID of the physical shared channel. The terminal device may determine the HARQ process numbers of the fourth part of the second physical shared channels according to the second rule and the HARQ process numbers of the third part of the second physical shared channels. For meanings of the third part of the second physical shared channel and the fourth part of the second physical shared channel, reference may be made to the foregoing.

2. The first HARQ process information indicated by the second indication information is an offset of the second HARQ process number.

(1) If K is 1, the terminal device may determine the respective HARQ process numbers of the M first physical shared channels according to the first HARQ process numbers, and the determination method may refer to the foregoing. And according to the offset of the second HARQ process number and the HARQ process number of the target first physical shared channel in the M first physical shared channels, determine the HARQ process numbers of the K second physical shared channels.

(2), if K is greater than 1, and the offset of the second HARQ process number includes the HARQ process number of the fifth part of the second physical shared channel in the K second physical shared channels relative to the first HARQ process number Offset.

In this case, the terminal device may determine the respective HARQ process numbers of the M first physical shared channels according to the first HARQ process numbers, and the determination method may refer to the foregoing. And according to the offset of the second HARQ process number, and the HARQ process number of the target first physical shared channel in the M first physical shared channels, determine the fifth part of the second physical channel in the K second physical shared channels The HARQ process ID of the shared channel.

Further, the terminal device may determine the sixth part of the second physical shared channels among the K second physical shared channels according to the third rule and the HARQ process number of the fifth part of the second physical shared channels among the K second physical shared channels. The HARQ process ID of the channel. For meanings of the fifth part of the second physical shared channel and the sixth part of the second physical shared channel, reference may be made to the foregoing.

Case 2, if K is greater than 1, and the offset of the HARQ process number includes the offset of the HARQ process numbers of all the second physical shared channels in the K second physical shared channels relative to the first HARQ process number.

In this case, the terminal device may determine the respective HARQ process numbers of the M first physical shared channels according to the first HARQ process numbers, and the determination method may refer to the foregoing. The terminal device determines the respective HARQ process numbers of the K second physical shared channels according to the respective HARQ process numbers of the M first physical shared channels and the offset of the HARQ process numbers.

Specifically, if the first HARQ process number includes a HARQ process number of the first physical shared channel, then the terminal device may determine the respective HARQ process numbers of the K second physical shared channels according to the first HARQ process number. Or for example, if the first HARQ process number includes multiple HARQ process numbers of the first physical shared channel, then the terminal device can determine the HARQ process number of the target first physical shared channel, and according to the HARQ process number of the target first physical shared channel , and the offset of the HARQ process number, so as to determine the respective HARQ process numbers of the K second physical shared channels.

Exemplarily, for example, if the first field also carries the NDI of at least one second physical shared channel among the K second physical shared channels, then the terminal device may determine the K second physical shared channels according to the first field The corresponding NDI. For another example, the first field also carries the offsets of the MCS indexes of the N physical shared channels, then the terminal device can determine the MCS corresponding to the N physical shared channels according to the offsets of the MCS indexes of the N physical shared channels . For another example, the first field also carries the CBGFI of at least one second physical shared channel among the K second physical shared channels, then the terminal device may The CBGFI of each of the N physical shared channels is determined.

It should be noted that the network device may execute S601 and S602 first, and then execute S603, or the network device may execute S601, S602, and S603 at the same time, which is not limited in this embodiment of the present application.

S604. The network device sends the transmission units respectively carried by the N physical shared channels to the terminal device. Correspondingly, the terminal device receives the transmission units corresponding to each of the N physical shared channels through the HARQ process corresponding to each of the N physical shared channels.

Regardless of the relationship between the sizes of N and M, the network device may send the transmission units respectively carried by the N physical shared channels to the terminal device. Wherein, the transmission units carried by each of the N physical shared channels may not be completely the same, or may be the same. In addition, the time for the network device to send the transmission units carried by each of the N physical shared channels to the terminal device may not be exactly the same, or may be the same, which is not limited in this embodiment of the present application.

Optionally, the terminal device may receive third configuration information from the network device, where the third configuration information is used to configure the first DMRS. The third configuration information is, for example, carried in an RRC message. For example, the DMRSs of the N physical shared channels are all the same, and only one first DMRS may be configured in the third configuration information. After obtaining the first DMRS, the terminal device may respectively perform channel estimation on the N physical shared channels according to the first DMRS. In this case, only one DMRS may be configured in the third configuration information, thereby reducing the number of bits occupied by the third configuration information.

The terminal device may receive transmission units corresponding to each of the N physical shared channels through HARQ processes corresponding to each of the N physical shared channels. For example, the terminal device may receive transmission units corresponding to each of the N physical shared channels according to respective time domain resource information and frequency domain resource information of the N physical shared channels.

S605. Determine N pieces of first HARQ response information according to the decoding results of the N physical shared channels.

When the terminal device receives the respective transmission units of the N physical shared channels, the terminal device decodes each physical shared channel in the N physical shared channels, and specifically decodes the transmission unit on each physical shared channel, and so on. After the N physical shared channels are decoded, the decoding results of the N physical shared channels can also be obtained. The terminal device determines the first HARQ response information corresponding to each physical shared channel in the N physical shared channels according to the respective decoding results of the N physical shared channels, and performs spatial binding on the N first HARQ response information, thereby obtaining the first HARQ response information. Two HARQ response information. Wherein, the spatial bundling is to perform a logical AND operation on the bits at the same position among the P bits in the N pieces of first HARQ response information.

Taking the terminal device determining the first HARQ response information of one physical shared channel among the N physical shared channels as an example, the process of determining the first HARQ response information will be introduced below.

If the terminal device determines that the decoding result of a transmission unit in the physical shared channel is successful, it determines to perform an acknowledgment ACK on the transmission unit. If the terminal device determines that the decoding result of the transmission unit is a decoding failure, it determines to perform a negative acknowledgment NACK on the transmission unit. By analogy, the terminal device can obtain a combination of HARQ responses of at least one transmission unit on the physical shared channel, and thus obtain the first HARQ response information. A physical shared channel transmits P transmission units. Correspondingly, the first HARQ response information includes P bits, that is, one bit in the P bits corresponds to a transmission unit on the physical shared channel, and each bit in the P bits is used for Indicates ACK or NACK of a transmission unit on the physical shared channel, and P is a positive integer.

By analogy, the terminal device can obtain the respective first HARQ response information of the N physical shared channels, and thus obtain the N first HARQ response information.

For example, if the communication system adopts a non-CBG transmission scheme and the transmission unit is a TB as an example, the terminal device may generate an ACK or NACK for a TB, and obtain the first HARQ response information of the TB. In this case, the first HARQ response information includes P bits, where the value of P is 1, and the 1 bit is used to indicate the ACK or NACK of the decoding result of the TB.

Or for example, if the communication system adopts the CBG transmission scheme, one PDSCH contains one TB and the TB contains 4 CBGs as an example, the terminal device can generate 4 ACKs or NACKs for the 4 CBGs respectively, and obtain the first HARQ of the PDSCH Answer message. In this case, the first HARQ response information includes P bits, where the value of P is 4, and the 4 bits are used to indicate ACK or NACK of the 4 CBG decoding results.

For example, please refer to FIG. 8 , which is a schematic diagram of performing spatial bundling on N=2, M=1 first HARQ response information provided by the embodiment of the present application. As shown in Figure 8, the terminal device receives CBG0, CBG1, CBG2 and CBG3 on PDSCH0 at D03, and receives CBG0, CBG1, CBG2 and CBG3 on PDSCH1.

The terminal device determines that CBG0 on PDSCH0 and PDSCH1 are successfully decoded, and then generates ACK (indicated by A in FIG. 8 ) for CBG0 on PDSCH0 and PDSCH1, and the ACK is represented by "1" in the first HARQ response information. The terminal device determines that CBG1 on PDSCH0 and PDSCH1 are decoded successfully, and then generates ACK for CBG1 on PDSCH0 and PDSCH1. If the terminal device determines that the decoding of CBG2 on PDSCH0 fails, it generates a NACK for CBG2 on PDSCH0 (indicated by N in FIG. 8 ), and if it determines that the decoding of CBG2 on PDSCH0 succeeds, it generates an ACK for CBG2 on PDSCH0. Wherein, NACK is represented by "0" in the first HARQ response information. The terminal device determines that CBG3 on PDSCH0 and PDSCH1 are decoded successfully, and then generates ACK for CBG3 on PDSCH0 and PDSCH1. The terminal device determines that the first HARQ response information for PDSCH0 may be expressed as "1101", and the first HARQ response information for determining PDSCH1 may be expressed as "1111".

S606. Perform spatial binding on N pieces of first HARQ response information to obtain second HARQ response information.

In a possible implementation manner, the terminal device may directly feed back the first HARQ response information corresponding to a physical shared channel to the network device. However, when the value of N is greater than 1, it may cause more first HARQ response information to be fed back by the terminal equipment, and since the value of the number N of physical shared channels scheduled by the control information each time is uncertain, this also As a result, the number of bits occupied by the first HARQ response information that the terminal equipment needs to feed back each time is uncertain. Correspondingly, since the network device cannot determine the number of bits of the first HARQ response information that the terminal device needs to feed back each time, it is not conducive for the network device to receive the first HARQ response information. For this reason, in this embodiment of the present application, the terminal device may perform spatial bundling on N pieces of first HARQ response information to obtain second HARQ response information including P bits.

Exemplarily, each first HARQ response information in the N pieces of first HARQ response information includes P bits, and one bit corresponds to one transmission unit in one physical shared channel. The terminal device performs a logical AND operation on the N i-th bits of the N first HARQ response information, where i takes a value from 1 to P, so as to obtain the second HARQ response information.

For example, taking P as 4, the N first HARQ response information includes two first HARQ response information as shown in FIG. 8 as an example. The terminal device performs a logical AND operation on the first bit (value 1) in the first HARQ response information of PDSCH0 and the first bit (value 1) in the first HARQ response information of PDSCH1 to obtain 1; the terminal device Perform a logical AND operation on the second bit (value 1) in the first HARQ response information of PDSCH0 and the second bit (value 1) in the first HARQ response information of PDSCH1 to obtain 1; the terminal device can The third bit in the first HARQ response information of PDSCH0 (the value is 0) and the third bit in the first HARQ response information of PDSCH1 (the value is 1) are logically ANDed to obtain 0; the terminal device can PDSCH0 The fourth bit (value 1) in the first HARQ response information of PDSCH1 is logically ANDed with the fourth bit (value 1) in the first HARQ response information of PDSCH1 to obtain 1. The terminal device combines the results of all logical AND operations to obtain the second HARQ response information, which may be specifically represented as 1101 . Therefore, after receiving the second HARQ response information, the network device will perform retransmission scheduling for both CBG2 of PDSCH0 and PDSCH1, although the decoding of CBG2 of PDSCH1 is correct.

In the embodiment of the present application, the terminal device can spatially bind the N first HARQ response information, so that even if the value of N is uncertain, the terminal device can feed back the second HARQ response information including P bits to the network device, The number of bits occupied by the second HARQ response information fed back by the terminal equipment is determined. Moreover, when the control information schedules multiple physical shared channels, the number of bits of the HARQ response information reported by the terminal equipment can be relatively reduced.

Optionally, it may be stipulated in a protocol that the terminal device needs to spatially bind the N first HARQ response information. Alternatively, the terminal device may determine whether to perform spatial bundling on the N pieces of first HARQ response information according to the fourth indication information.

Specifically, the network device sends fourth configuration information to the terminal device, where the fourth configuration information may be a PDSCH-config information element in the RRC message. The fourth configuration information includes the fourth indication information, and the fourth indication information is used to indicate whether to spatially bundle the N pieces of first HARQ response information scheduled by the control information. Exemplarily, the fourth indication information may be a signaling in the fourth configuration information, such as retransmission allowed spatial bundling (allowedSpatialBundlingForRetransmission). If the value of the fourth indication information is the first value, such as allowedSpatialBundlingForRetransmission='1', the first value indicates that the terminal device needs to perform spatial bundling on N pieces of first HARQ response information. In this case, the terminal device determines that the above process can be used to spatially bundle the N pieces of first HARQ response information, so as to obtain the second HARQ response information. The terminal device may feed back the second HARQ response information to the network device. If the value of the fourth indication information is the second value, such as allowedSpatialBundlingForRetransmission='0', the second value indicates that the terminal device does not need to perform spatial bundling on the N pieces of first HARQ response information. In this case, the terminal device may directly feed back the N first HARQ response information to the network device.

It should be noted that, in the embodiment of the present application, the terminal device feeds back the second HARQ response information to the network device as an example, but when the value of N is 1, or the terminal device is instructed not to perform spatial binding, the terminal The device may directly feed back N pieces of first HARQ response information to the network device.

S607. The terminal device sends the second HARQ response information to the network device. Correspondingly, the network device receives the second HARQ response information from the terminal device.

After receiving the second HARQ response information, the network device may determine whether the respective transmission units of the N physical shared channels are successfully transmitted according to the content of the second HARQ response information. If it is determined that the transmission unit of a physical shared channel has not been successfully transmitted, the network device may continue to retransmit the transmission unit of the physical shared channel.

For example, continue to use the example shown in Figure 8, the network device receives the second HARQ response information is 1101, and the value of N is 2, then the network device determines that the CBG2 in PDSCH0 and PDSCH1 has not been successfully transmitted, then the network device can send a message to the terminal The device retransmits the CBG2.

Optionally, the first configuration information, the second configuration information, the third configuration information and the fourth configuration information, the fifth configuration information, the sixth configuration information and the seventh configuration information in the embodiment of the present application can all be sent in one message For terminal equipment, for example, they are all RRC messages. Alternatively, the first configuration information, the second configuration information, the third configuration information, the fourth configuration information, the fifth configuration information, the sixth configuration information, and the seventh configuration information are all sent to the terminal device through different messages. There is no limit to this.

Optionally, the first field, the second field, the third field, the fourth field, and the fifth field in this embodiment of the present application may all be the same field. Alternatively, the first field, the second field, the third field, the fourth field, and the fifth field are all different fields, which is not limited in this embodiment of the present application.

Optionally, S601-S602 and S604-S607 in FIG. 6 are all optional steps. These optional steps are illustrated in dashed lines in FIG. 6 .

In the embodiment shown in FIG. 6 , the network device can schedule transmission of multiple physical shared channels through one piece of control information, so as to reduce signaling overhead. Moreover, in the case that the size relationship between N and M is different, the first field carries different indication information, which reduces the number of bits occupied by the control information. In addition, without adding the control information field, it is also possible to implement one control information to schedule the transmission of multiple physical shared channels.

The foregoing FIG. 6 is illustrated by taking the communication method applied to the communication system shown in FIG. 4 as an example, and the communication method may also be applied to the communication system shown in FIG. 5 . When the communication method is applied to the communication system shown in FIG. 5 , the control information is, for example, SCI, and the N physical shared channels scheduled by the control information may all be PSSCHs. Correspondingly, the network device in FIG. 6 can be replaced by the first terminal device, and the terminal device in FIG. 6 can be replaced by the second terminal device. The interaction process between the first terminal device and the second terminal device can refer to FIG. 6 , They are not listed here.

FIG. 9 shows a schematic structural diagram of a communication device 900 . Among them, the communication device 900 can be applied to a terminal device, or a device in the terminal device, which can realize the functions of the terminal device in the method provided by the embodiment of this application; the communication device 900 can also be able to support the terminal device to realize the The means of the function of the terminal equipment in the method. The communication device 900 may be a hardware structure, a software module, or a hardware structure plus a software module. The communication device 900 may be implemented by a system on a chip. In the embodiment of the present application, the system-on-a-chip may be composed of chips, or may include chips and other discrete devices.

The communication device 900 may include a transceiver module 901 .

The transceiver module 901 may be configured to execute the step of receiving control information from a network device in the embodiment shown in FIG. 6 . It may also perform receiving the first configuration information from the network device, receiving the second configuration information from the network device, sending the second HARQ response information to the network device, and other processes supporting the technology described herein, etc. The transceiver module 901 is used for the communication device 900 to communicate with other modules, and it may be a circuit, device, interface, bus, software module, transceiver or any other device capable of realizing communication.

Optionally, the communication device 900 further includes a processing module 902 . In FIG. 9 , the processing module 902 is indicated by a dotted line box, which is optional.

Exemplarily, the processing module 902 may be used to execute steps such as S605 and S606 above, and may also be used to support other processes of the technologies described herein.

Wherein, all relevant content of each step involved in the above-mentioned method embodiment can be referred to the function description of the corresponding function module, and will not be repeated here.

The division of modules in the embodiments of the present application is schematic, and is only a logical function division. There may be other division methods in actual implementation. In addition, each functional module in each embodiment of the present application can be integrated into a processing In the controller, it can also be physically present separately, or two or more modules can be integrated into one module. The above-mentioned integrated modules can be implemented in the form of hardware or in the form of software function modules.

FIG. 10 shows a schematic structural diagram of a communication device 1000 . Among them, the communication device 1000 can be applied to a network device, or a device in the network device, which can realize the function of the network device in the method provided by the embodiment of this application; the communication device 1000 can also be able to support the network device to implement the A means of functioning in a network device. The communication device 1000 can be applied to a terminal device, or it can be a device in the terminal device, which can realize the functions of the terminal device in the method provided by the embodiment of the present application; the communication device 1000 can also be able to support the terminal device to implement the method provided in the embodiment of the present application A device that functions as a terminal device. The communication device 1000 may be a hardware structure, a software module, or a hardware structure plus a software module. The communication device 1000 may be implemented by a system on a chip. In the embodiment of the present application, the system-on-a-chip may be composed of chips, or may include chips and other discrete devices.

The communication device 1000 may include a transceiver module 1001 .

The transceiver module 1001 may be configured to execute the step of sending control information to the terminal device in the embodiment shown in FIG. 6 . It is also possible to perform sending the first configuration information to the terminal device, sending the second configuration information to the terminal device, sending the transmission units respectively carried by N physical shared channels to the terminal device, and receiving the second HARQ response information from the terminal device, etc. The transceiver module 1001 may also be used to support other processes of the techniques described herein. The transceiver module 1001 is used for the communication device 1000 to communicate with other modules, and it may be a circuit, device, interface, bus, software module, transceiver or any other device capable of realizing communication.

Optionally, the communication device 1000 further includes a processing module 1002 . In Fig. 10, the processing module 1002 is indicated by a dashed box, which is optional.

Exemplarily, the processing module 1002 may be used to control the transceiver module 1001 to execute corresponding steps, may also be used to determine control information, and may also be used to support other processes of the technologies described herein.

FIG. 11 shows a communication device 1100 provided in this embodiment of the present application, where the communication device 1100 may be the terminal device shown in FIG. 4 , or the communication device 1100 may be the first terminal device shown in FIG. 5 . Wherein, the communication device 1100 may be a system on a chip. In the embodiment of the present application, the system-on-a-chip may be composed of chips, or may include chips and other discrete devices.

The communication apparatus 1100 includes at least one processor 1101 for realizing or supporting the communication apparatus 1100 to implement the terminal device shown in FIG. 4 of this application, or the communication apparatus 1100 may be the function of the first terminal device shown in FIG. 5 . Exemplarily, the processor 1101 may receive the control information, for details, refer to the detailed description in the method example, and details are not repeated here.

The communication device 1100 may further include a communication interface 1102 for communicating with other devices through a transmission medium, so that the communication device 1100 communicates with other devices. Exemplarily, the other device may be a server. The processor 1101 can use the communication interface 1102 to send and receive data.

The communication device 1100 may also include at least one memory 1103 for storing program instructions and/or data. The memory 1103 is coupled to the processor 1101 . The coupling in the embodiments of the present application is an indirect coupling or a communication connection between devices, units or modules, which may be in electrical, mechanical or other forms, and is used for information exchange between devices, units or modules. The processor 1101 may cooperate with the memory 1103 . Processor 1101 may execute program instructions stored in memory 1103 . At least one of the at least one memory 1103 may be included in the processor 1101 . When the processor 1101 executes the program instructions in the memory 1103, any communication method in the embodiments shown in FIG. 6 may be implemented. In addition, the communication device in FIG. 11 can also implement the functions of the communication device in FIG. 9 .

As an example, the memory 1103 in FIG. 11 is an optional part. For example, the memory 1103 is coupled with the processor 1101 .

In this embodiment of the present application, a specific connection medium among the communication interface 1102, the processor 1101, and the memory 1103 is not limited. In the embodiment of the present application, in FIG. 11, the communication interface 1102, the processor 1101, and the memory 1103 are connected through the bus 1104. The bus is represented by a thick line in FIG. 11, and the connection mode between other components is only for schematic illustration , is not limited. The bus can be divided into address bus, data bus, control bus and so on. For ease of representation, only one thick line is used in FIG. 11 , but it does not mean that there is only one bus or one type of bus.

In this embodiment of the application, the processor 1101 may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may implement Or execute the methods, steps and logic block diagrams disclosed in the embodiments of the present application. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the methods disclosed in connection with the embodiments of the present application may be implemented by a hardware processor, or by a combination of hardware and software modules in the processor.

In the embodiment of the present application, the memory 1103 can be a non-volatile memory, such as a hard disk (hard disk drive, HDD) or a solid-state drive (solid-state drive, SSD), etc., and can also be a volatile memory (volatile memory), For example random-access memory (random-access memory, RAM). A memory is, but is not limited to, any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. The memory in the embodiment of the present application may also be a circuit or any other device capable of implementing a storage function, and is used for storing program instructions and/or data.

FIG. 12 shows a communication device 1200 provided in this embodiment of the present application, where the communication device 1200 may be the network device shown in FIG. 4 , or the communication device 1100 may be the second terminal device shown in FIG. 5 . Wherein, the communication device 1200 may be a system on a chip. In the embodiment of the present application, the system-on-a-chip may be composed of chips, or may include chips and other discrete devices.

The communication device 1200 includes at least one processor 1201, a communication interface 1202, and at least one memory 1203. When the processor 1201 executes the program instructions in the memory 1203, any communication method in the embodiment shown in FIG. 6 can be implemented. For implementation forms of the processor 1201, the communication interface 1202, and the memory 1203, reference may be made to the foregoing. In the embodiment of the present application, in FIG. 12 , the communication interface 1202 , the processor 1201 and the memory 1203 are connected through a bus 1204 , and the bus is represented by a thick line in FIG. 12 . In addition, the communication device in FIG. 12 can also implement the functions of the communication device in FIG. 10 .

As an example, the memory 1203 in FIG. 2 is an optional part. For example, the memory 1203 is coupled with the processor 1201.

An embodiment of the present application also provides a computer-readable storage medium, which is used to store a computer program. When the computer program is run on a computer, the computer can execute any of the embodiments shown in FIG. 6 . A method of communication.

An embodiment of the present application also provides a computer program product, the computer program product stores a computer program, the computer program includes program instructions, and when the program instructions are executed by a computer, the computer executes any of the embodiments shown in FIG. 6 . A method of communication.

An embodiment of the present application provides a chip system, the chip system includes a processor, and may also include a memory, which is used to implement any communication method in the embodiment shown in Figure 6, and can also be used to implement the network device or The function of the terminal device, or used to realize the function of the aforementioned first terminal device or the second terminal device. The system-on-a-chip may consist of chips, or may include chips and other discrete devices.

The methods provided 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 using software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the processes or functions according to the embodiments of the present application will be generated in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, network equipment, user equipment or other programmable devices. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website, computer, server or data center Transmission to another website site, computer, server, or data center by wired (such as coaxial cable, optical fiber, digital subscriber line (DSL) or wireless (such as infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. integrated with one or more available media. The available medium can be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), optical media (for example, digital video disc (digital video disc, DVD for short)), or semiconductor media (for example, SSD).

Obviously, those skilled in the art can make various changes and modifications to the application without departing from the spirit and scope of the application. In this way, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application is also intended to include these modifications and variations.

Claims

A communication method, characterized in that, comprising:

receiving control information, the control information is used to schedule N physical shared channels, the control information includes a first field, the N physical shared channels include M first physical shared channels, and the N and the M are both is a positive integer;

Wherein, when the N is equal to the M, the first field carries first indication information, and the first indication information is used to indicate the modulation and coding strategy MCS of the N physical shared channels; In the case where the N is greater than the M, the first field carries second indication information, and the second indication information is used to indicate the first hybrid automatic repeat request HARQ process information of the K second physical shared channels. The K is a positive integer, and the K second physical shared channels are physical shared channels except the M first physical shared channels among the N physical shared channels.
The method according to claim 1, wherein the control information further includes code block group transmission information CBGTI, and the CBGTI is used to indicate a code block CBG for retransmission of the N physical shared channels; the method Also includes:

receiving first configuration information, where the first configuration information is used to configure the maximum number of schedulable physical shared channels in the control information;

The value of N is determined according to the CBGTI and the maximum number of schedulable physical shared channels in the control information.
The method according to claim 1 or 2, wherein the control information further includes a first row index, and the method further includes:

receiving second configuration information, wherein the second configuration information is used to configure a time-domain resource allocation list, the time-domain resource allocation list includes at least one row index, and includes an indication of each row index in the at least one row index Respective time-domain resource information of at least one physical shared channel, the at least one row index includes the first row index;

Determine the number of physical shared channels indicated by the first row index from the time domain resource allocation list, and determine the value of N.
The method according to any one of claims 1-3, wherein the control information further includes first HARQ process numbers of M first physical shared channels, and the first HARQ process numbers are used to determine the The respective HARQ process numbers of the M first physical shared channels; the first HARQ process information includes:

A second HARQ process number, where the second HARQ process number is used to indicate the HARQ process numbers of the K second physical shared channels; or,

The offset of the second HARQ process number, the offset of the second HARQ process number refers to the offset of the HARQ process numbers of the K second physical shared channels relative to the first HARQ process number respectively .
The method according to any one of claims 1-4, characterized in that,

When the N is greater than the M, the transmission units carried by the N physical shared channels are all retransmissions, and the last transmission of the transmission units carried by the N physical shared channels uses The MCSs are all the same, and the transmission unit is a transmission block TB, a code block CB or a code block group CBG.
The method according to claim 5, wherein when the N is greater than the M, the first field further carries one or more of the following information:

A new data indicator NDI of at least one second physical shared channel among the K second physical shared channels, wherein the NDI of the at least one second physical shared channel is used to indicate that the one second physical shared channel is used for new or retransmitted; or,

The offsets of the MCS indexes of the N physical shared channels, where the offsets of the MCS indexes are used to indicate that the MCS indexes adopted by the transmission units respectively carried on the N physical shared channels are relative to the last transmission the offset of the MCS index used by the transmission unit; or,

The code block group refresh information CBGFI of at least one second physical shared channel among the K second physical shared channels, where the CBGFI of one second physical shared channel is used to indicate the code block group refresh information carried on the one second physical shared channel Whether the transmission unit is soft-combined with the transmission unit transmitted last time.
The method according to claim 6, wherein when the N is greater than the M, and the first field does not carry the offsets of the MCS indexes of the N physical shared channels, the The MCS indexes adopted by the transmission units respectively carried on the N physical shared channels are all the same, and are the same as the MCS adopted by the last transmission of the transmission units carried by the N physical shared channels respectively.
The method according to any one of claims 1-7, wherein the method further comprises:

receiving third configuration information, where the third configuration information is used to configure the first demodulation reference signal DMRS;

Demodulate the transmission units respectively carried by the N physical shared channels according to the first DMRS.
The method according to any one of claims 1-8, wherein the control information further includes third indication information, and the third indication information is used to indicate the redundancy version RV of the N physical shared channels , the third indication information includes N bits, and when the N is greater than the M, the N bits are respectively used to indicate the RVs of the N physical shared channels.
The method according to any one of claims 1-9, wherein the method further comprises:

According to the decoding results of the N physical shared channels, respectively determine N first HARQ response information, wherein any first HARQ response information of the N first HARQ response information includes P bits, and the P bits Any one bit of is used to indicate the positive acknowledgment ACK or negative acknowledgment NACK of a transmission unit carried by the corresponding physical shared channel, the P is a positive integer, and the transmission unit is a transmission block TB, a code block CB or a code block group CBG;

performing spatial bundling on the N first HARQ response information to obtain second HARQ response information, the spatial bundling being at the same position in the P bits in the N first HARQ response information obtained by performing a logical AND operation on the bits of , and the second HARQ response information includes P bits;

Send the second HARQ response information.
The method according to claim 10, further comprising: receiving fourth configuration information, the fourth configuration information includes fourth indication information, and the fourth indication information is used to indicate whether to configure the performing the spatial binding on the N first HARQ response information;

The sending of the second HARQ response information includes: if it is determined that the value of the fourth indication information is a first value, the first value indicates that the spatial bundling of the N pieces of first HARQ response information is performed. determined, then sending the second HARQ response information;

The method further includes: if it is determined that the value of the fourth indication information is a second value, and the second value indicates that the space bundling is not performed on the N pieces of first HARQ response information, sending the N A first HARQ response message.
A communication method, characterized in that, comprising:

sending control information, where the control information is used to schedule N physical shared channels, the control information includes a first field, the N physical shared channels include M first physical shared channels, and the N and the M are all positive integers, and when the N is equal to the M, the first field carries first indication information, and the first indication information is used to indicate the modulation and coding strategies of the N physical shared channels MCS: In the case where the N is greater than the M, the first field carries second indication information, and the second indication information is used to indicate the first hybrid automatic repeat request HARQ of K second physical shared channels Process information, the K is a positive integer, and the K second physical shared channels are physical shared channels other than the M first physical shared channels among the N physical shared channels.
The method according to claim 12, wherein the control information further includes code block group transmission information CBGTI, and the CBGTI is used to indicate the code block CBG for retransmission of the N physical shared channels; the method Also includes:

Sending first configuration information, where the first configuration information is used to configure the maximum number of physical shared channels that can be scheduled by the control information.
The method according to claim 12 or 13, wherein the method further comprises:

Sending second configuration information, where the second configuration information is used to configure a time-domain resource allocation list, the time-domain resource allocation list includes at least one row index, and includes an indication of each row index in the at least one row index The time-domain resource information of at least one physical shared channel, the at least one row index includes a first row index, the control information includes the first row index, and the first row index is used to indicate time-domain resource allocation The number of physical shared channels indicated in the list.
The method according to any one of claims 12-14, wherein the control information further includes first HARQ process numbers of M first physical shared channels, and the first HARQ process numbers are used to determine the The respective HARQ process numbers of the M first physical shared channels; the first HARQ process information includes:

A second HARQ process number, where the second HARQ process number is used to indicate the HARQ process numbers of the K second physical shared channels; or,

The offset of the second HARQ process number, the offset of the second HARQ process number refers to the offset of the HARQ process numbers of the K second physical shared channels relative to the first HARQ process number respectively .
The method according to any one of claims 12-15, characterized in that,

When the N is greater than the M, the transmission units carried by the N physical shared channels are all retransmissions, and the last transmission of the transmission units carried by the N physical shared channels uses The MCSs are all the same, and the transmission unit is a transmission block TB, a code block CB or a code block group CBG.
The method according to claim 16, wherein when the N is greater than the M, the first field further carries one or more of the following information:

A new data indicator NDI of at least one second physical shared channel among the K second physical shared channels, wherein the NDI of the at least one second physical shared channel is used to indicate that the one second physical shared channel is used for new or retransmitted; or,

The offsets of the MCS indexes of the N physical shared channels, where the offsets of the MCS indexes are used to indicate that the MCS indexes adopted by the transmission units respectively carried on the N physical shared channels are relative to the last transmission the offset of the MCS index used by the transmission unit; or,

The code block group refresh information CBGFI of at least one second physical shared channel among the K second physical shared channels, where the CBGFI of one second physical shared channel is used to indicate the code block group refresh information carried on the one second physical shared channel Whether the transmission unit is soft-combined with the transmission unit transmitted last time.
The method according to claim 17, wherein when the N is greater than the M, and the first field does not carry the offsets of the MCS indexes of the N physical shared channels, the The MCS indexes adopted by the transmission units respectively carried on the N physical shared channels are all the same, and are the same as the MCS adopted by the last transmission of the transmission units carried by the N physical shared channels respectively.
The method according to any one of claims 12-18, wherein the method further comprises:

Sending third configuration information, where the third configuration information is used to configure a first demodulation reference signal DMRS, and the first DMRS is used to demodulate transmission units respectively carried by the N physical shared channels.
The method according to any one of claims 12-19, wherein the control information further includes third indication information, and the third indication information is used to indicate redundancy versions RV of the N physical shared channels , the third indication information includes N bits, and when the N is greater than the M, the N bits are respectively used to indicate the RVs of the N physical shared channels.
The method according to any one of claims 12-20, further comprising: receiving second HARQ response information, wherein the second HARQ response information includes P bits, and the second HARQ response information The information is obtained by spatially bundling the N first HARQ response information, the N first HARQ response information is determined according to the decoding results of the N physical shared channels, and the spatial bundling is the The bit in the same position of the P bits in the N first HARQ response information is obtained by performing a logical AND operation, and any first HARQ response information of the N first HARQ response information contains P bits, so Any one of the P bits is used to indicate a positive acknowledgment ACK or a negative acknowledgment NACK performed by a transmission unit carried by a corresponding physical shared channel among the N physical shared channels, the P is a positive integer, and the transmission A unit is a transport block TB, a code block CB or a code block group CBG.
The method according to claim 21, further comprising: sending fourth configuration information, the fourth configuration information includes fourth indication information, and the fourth indication information is used to indicate whether to configure the performing the spatial binding on the N first HARQ response information;

Receiving the second HARQ response information includes: if the value of the fourth indication information is a first value, and the first value indicates that the space bundling is performed on the N pieces of first HARQ response information, then receiving the The second HARQ response information;

The method further includes: if the value of the fourth indication information is a second value, the second value indicates not to perform the spatial bundling on the N first HARQ response information; if the fourth indication information is the second value, then N pieces of the first HARQ response information are received.
A communication device, characterized in that the communication device includes a transceiver module, and the transceiver module is specifically used for:

receiving control information, the control information is used to schedule N physical shared channels, the control information includes a first field, the N physical shared channels include M first physical shared channels, and the N and the M are both is a positive integer;

Wherein, when the N is equal to the M, the first field carries first indication information, and the first indication information is used to indicate the modulation and coding strategy MCS of the N physical shared channels; In the case where the N is greater than the M, the first field carries second indication information, and the second indication information is used to indicate the first hybrid automatic repeat request HARQ process information of the K second physical shared channels. The K is a positive integer, and the K second physical shared channels are physical shared channels except the M first physical shared channels among the N physical shared channels.
A communication device, characterized in that the communication device includes:

A transceiver module, configured to send control information, where the control information is used to schedule N physical shared channels, the control information includes a first field, and the N physical shared channels include M first physical shared channels, so The N and the M are both positive integers, and when the N is equal to the M, the first field carries first indication information, and the first indication information is used to indicate the N physical shared channels The modulation and coding strategy MCS of the MCS; in the case where the N is greater than the M, the first field carries the second indication information, and the second indication information is used to indicate the first mix of K second physical shared channels Automatic repeat request HARQ process information, the K is a positive integer, and the K second physical shared channels are physical shared channels except the M first physical shared channels among the N physical shared channels.
A communication device, characterized in that it includes: a processor and a memory; the memory is used to store one or more computer programs, and the one or more computer programs include computer-executable instructions. When the communication device is running, The processor executes the one or more computer programs stored in the memory, so that the communication device executes the method according to any one of claims 1-11, or executes the method described in claims 12-22. any one of the methods described.
A chip system, characterized in that the chip system includes:

A processor and an interface, the processor is used to call and run instructions from the interface, when the processor executes the instructions, it implements the method according to any one of claims 1-11, or executes the method described in any one of claims 1-11 The method of any one of claims 12-22.
A computer-readable storage medium, characterized in that the computer-readable storage medium is used to store a computer program, and when the computer program runs on a computer, the computer executes any one of claims 1-11. The method described in the item, or carry out the method as described in any one in the claim 12-22.