Communication method and related apparatus

Abstract

Provided in the present application are a communication method and a related apparatus. The method comprises: a network device sending first information to a terminal device, wherein the first information is used for indicating a first group, and the first group comprises at least two carriers, and corresponds to a first HARQ entity; and the network device sending second information to the terminal device, wherein the second information is used for scheduling at least one carrier in the first group, and the at least one carrier corresponds to the first HARQ entity. In the method, a plurality of carriers may correspond to one HARQ entity, and when a network device schedules a carrier in a first group, an HARQ entity corresponding to the carrier may be an HARQ entity (i.e., the first HARQ entity) corresponding to a group (i.e., the first group) in which the carrier is located, such that indication overheads related to carriers and HARQ entities can be reduced, thereby reducing the overheads of second information.

Description

Communication method and related apparatus

[0001] The present application claims priority to the Chinese patent application No. 202411340605.5, filed on September 24, 2024, with the State Intellectual Property Office of China, and the Chinese patent application No. 202411340605.5 has the title of “Communication method and related apparatus”, the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the field of communication technology, in particular to a communication method and related apparatus. BACKGROUND

[0003] Downlink control information (DCI) is carried in a physical downlink control channel (PDCCH). DCI is control information related to a physical uplink / downlink shared channel. For example, resource allocation information, modulation mode, hybrid automatic repeat request identity (HARQ-ID), or new transmission or retransmission information.

[0004] At present, a single downlink control information (single DCI) is introduced, and the single DCI supports a DCI scheduling a physical downlink shared channel (PDSCH) of multiple component carriers (or carriers, CCs). Since each CC corresponds to a hybrid automatic repeat request (HARQ) entity, the DCI includes a HARQ field corresponding to each CC, and the DCI has a large overhead. SUMMARY

[0005] The present application provides a communication method and related apparatus, which are used to reduce the indication overhead of carriers related to HARQ entities.

[0006] The present application is described below from different aspects. It should be understood that the implementation and advantages of the different aspects below can be referred to each other.

[0007] In a first aspect, a communication method is provided, which can be performed by a first communication device. The first communication device can be a network device, which can be a device or apparatus with a chip, or a device or apparatus integrated with a circuit. Alternatively, the first communication device can be a chip, a chip system, a module, or a control unit in the above-mentioned devices or apparatus, such as a server at a network side or a component (e.g., a circuit, a chip or a chip system, etc.) in the server. It should be noted that, in the present application, the network device can refer to the network device itself, or a chip, a functional module or an integrated circuit in the network device that performs the method provided by the present application. The specific implementation is not limited in the present application.

[0008] In the first aspect and possible implementation manners thereof, the method is described by taking an example of being performed by a network device. The method comprises: the network device sending first information, the first information being used to indicate a first packet, the first packet comprising at least two carriers, the first packet corresponding to a first HARQ entity; and the network device sending second information, the second information being used to schedule at least one carrier in the first packet, the at least one carrier corresponding to the first HARQ entity.

[0009] In the embodiments of the present application, a plurality of carriers can correspond to one HARQ entity, for example, the at least two carriers in the first packet described above can correspond to the first HARQ entity. When the network device schedules a carrier in the first packet, the HARQ entity corresponding to the carrier can be the HARQ entity corresponding to the group (i.e., the first packet) in which the carrier is located (i.e., the first HARQ entity described above). Compared with the method that a carrier corresponds to one HARQ entity and the HARQ entity corresponding to each carrier is indicated by a HARQ field in the DCI, the plurality of carriers corresponding to one HARQ entity in the embodiments of the present application can reduce the overhead of the indication (e.g., the HARQ field) related to the carrier and the HARQ entity, thereby reducing the overhead of the second information (e.g., the DCI).

[0010] For example, the first information described above can be a radio resource control (RRC) or an RRC message, or the first information can be a field in the RRC, or the first information can belong to the RRC message, or the RRC message can comprise the first information. The second information described above can be a DCI, or the second information can be a field in the DCI, or the DCI can comprise the second information, or the second information can belong to the DCI.

[0011] It can be understood that, assuming each carrier corresponds to a HARQ entity, the HARQ field in the DCI independently indicates the HARQ entity corresponding to each carrier, the overhead of the HARQ field in the DCI is large, for example, the HARQ field of 1 carrier occupies about 4 bits, and the HARQ field of 4 carriers occupies about 4x4 = 16 bits. The embodiment of the application can correspond to one HARQ entity for 4 carriers, and the HARQ field in the DCI is used to indicate one HARQ entity, and the HARQ field of 4 carriers occupies about 4 bits, which can greatly reduce the overhead of the HARQ field, thereby reducing the overhead of the DCI.

[0012] The first information can be used to indicate one or more groups, each group corresponding to a HARQ entity, and the plurality of groups includes the first group. Alternatively, the first information can be used to indicate a plurality of carriers, at least two carriers of the plurality of carriers corresponding to one HARQ entity. Alternatively, the first information can be used to indicate a plurality of carriers using (or adopting) the same HARQ entity.

[0013] The second information can be used to schedule one or more carriers, the one or more carriers being carriers in the first group, and the one or more carriers corresponding to the first HARQ entity. It should be understood that the second information can also schedule carriers not belonging to the first group, for example, the second information can also be used to schedule at least one carrier of a second group, the at least one carrier corresponding to a HARQ process of a HARQ entity corresponding to the second group, wherein the HARQ entity corresponding to the first group is different from the HARQ entity corresponding to the second group, and the HARQ process corresponding to the at least one carrier of the first group is different from the HARQ process corresponding to the at least one carrier of the second group.

[0014] In combination with the first aspect, in a possible implementation, the at least one carrier corresponds to the first HARQ process, and the first HARQ entity includes the first HARQ process.

[0015] It should be understood that one HARQ entity includes a plurality of HARQ processes, for example, one HARQ entity can include 16 HARQ processes.

[0016] In the embodiments of the present application, the carrier scheduled by the second information (i.e., the at least one carrier) can be one or more carriers in the first group, which can correspond to the same HARQ process, which can be one HARQ process (e.g., the first HARQ process) in the HARQ entity (e.g., the first HARQ entity) corresponding to the first group. In the method, the multiple carriers correspond to one HARQ process, which can reduce the indication overhead (e.g., the HARQ process number overhead) of the carrier and the HARQ entity, thereby reducing the overhead of the second information (e.g., the DCI).

[0017] In combination with the first aspect, in a possible implementation, the at least one carrier includes a first carrier, the first carrier is used to transmit a first PDSCH; and the second information includes first indication information, the first indication information is used to indicate a HARQ entity corresponding to the first carrier in the case of performing the first PDSCH retransmission.

[0018] In the embodiments of the present application, the second information can also indicate the HARQ entity corresponding to the first carrier in the case of performing the first PDSCH retransmission through the first indication information. The method is not limited to the case of performing the first PDSCH retransmission, the HARQ entity corresponding to the first carrier is the HARQ entity (i.e., the first HARQ entity) corresponding to the group (i.e., the first group) in which the carrier is located. The implementation of indicating through the first indication information increases the possibility of the HARQ entity corresponding to the carrier in the case of PDSCH retransmission, and improves the flexibility of indication.

[0019] Optionally, the first indication information can also be decoupled from the second information, i.e., the second information does not include the first indication information, and the network device can also separately send the first indication information, which is not limited in the present application.

[0020] In combination with the first aspect, in a possible implementation, the HARQ entity corresponding to the first carrier is a second HARQ entity, and the first indication information is used to indicate a second HARQ process in the second HARQ entity corresponding to the first carrier; or the HARQ entity corresponding to the first carrier is a first HARQ entity, and the first indication information is used to indicate a third HARQ process in the first HARQ entity corresponding to the first carrier.

[0021] In the embodiments of the present application, when the second information is used to schedule the first carrier (e.g., the second information is used to schedule the first carrier for PDSCH transmission), the first carrier corresponds to the first HARQ entity, and specifically corresponds to the first HARQ process in the first HARQ entity. However, in the case of first PDSCH retransmission, the HARQ entity corresponding to the first carrier can be the second HARQ entity, and specifically can be the second HARQ process in the second HARQ entity, or can be the first HARQ entity, and specifically corresponds to the first HARQ process in the first HARQ entity. This method does not limit the HARQ entity corresponding to the first carrier in the case of first PDSCH retransmission, which can be determined according to specific conditions, thereby improving the flexibility of the corresponding relationship between the carrier and the HARQ entity and the carrier and the HARQ process.

[0022] Optionally, the third HARQ process can be the first HARQ process described above, or can be another HARQ process in the first HARQ entity except the first HARQ process, which is not limited in the present application. Optionally, when the HARQ entity corresponding to the first carrier in the case of first PDSCH retransmission is the second HARQ entity, and specifically corresponds to the second HARQ process in the second HARQ entity, it can avoid the first carrier from causing other carriers corresponding to the first HARQ entity to perform PDSCH retransmission, thereby wasting retransmission resources (e.g., the first HARQ process).

[0023] In combination with the first aspect, in a possible implementation, the second information is used to schedule multiple carriers in the first group, and the method further includes: sending third information, the third information is used to schedule the second carrier, the second carrier corresponds to the third HARQ entity, and the third HARQ entity includes the HARQ process corresponding to the second carrier.

[0024] In the embodiments of the present application, the second information is used to schedule multiple carriers in the first group, e.g., the second information is the first DCI and the DCI format of the first DCI is DCI1-3 or DCI0-3, and the HARQ entity corresponding to the carrier scheduled by the second information can be the HARQ entity (e.g., the first HARQ entity described above) corresponding to the group (e.g., the first group described above) to which the carrier belongs. The third information is used to schedule a carrier (e.g., the second carrier described above), e.g., the third information is the second DCI and the DCI format of the second DCI is DCI1-1 or DCI1-2 or DCI0-1 or DCI0-2, and the HARQ entity corresponding to the carrier scheduled by the third information can be the HARQ entity (e.g., the third HARQ entity described above) corresponding to the carrier. The specific content of the DCI format can be referred to in the embodiments below, which will not be expanded here.

[0025] It can be understood that the first HARQ entity corresponds to multiple carriers, the third HARQ entity corresponds to a single carrier, and the first HARQ entity is different from the third HARQ entity. In the method, different HARQ entities can correspond to the same carrier, the method improves the flexibility of configuring the HARQ entity corresponding to the carrier, and is beneficial to adjusting the HARQ entity corresponding to the carrier according to the actual situation; in addition, the method can indicate the HARQ entity corresponding to the carrier through the scheduling information (such as the second information or the third information), without additional indication information, and can reduce the indication overhead,

[0026] In combination with the first aspect, in a possible implementation, the second information includes second indication information and / or third indication information, the second indication information is used to indicate the at least one carrier, and the third indication information is used to indicate the first HARQ process. It should be noted that the implementation in which the second information includes the second indication information and / or the third indication information can be combined with any one or more of the possible implementations of the first aspect, and the present application does not limit this.

[0027] For example, the second indication information can be a carrier identifier. For example, the at least one carrier is one carrier, and the second indication information can be a carrier identifier corresponding to the carrier. For another example, the at least one carrier is multiple carriers, and the second indication information can be a carrier identifier corresponding to each of the multiple carriers. The third indication information can be a HARQ process identifier (ID) of the first HARQ process, such as a HARQ process number. Assuming that the second indication information is used to indicate multiple carriers, compared with indicating the HARQ process for each of the multiple carriers through multiple indication information, the embodiment of the present application indicates one HARQ process (such as the first HARQ process) corresponding to the multiple carriers through the third indication information, which can reduce the indication overhead.

[0028] In combination with the first aspect, in a possible implementation, when the first HARQ process is occupied, the carrier not called in the first group does not use the first HARQ process. It should be noted that the implementation in which, when the first HARQ process is occupied, the carrier not called in the first group does not use the first HARQ process can be combined with any one or more of the possible implementations of the first aspect, and the present application does not limit this.

[0029] In combination with the first aspect, in a possible implementation, the PDSCH transmitted by the at least one carrier corresponds to the first HARQ process. It should be noted that the implementation in which the PDSCH transmitted by the at least one carrier corresponds to the first HARQ process can be combined with any one or more of the possible implementations of the first aspect, and the present application does not limit this.

[0030] The at least one carrier is one or more carriers in the first packet scheduled by the second information, and the PDSCH transmitted by the at least one carrier includes a PDSCH transmitted by one carrier or PDSCHs transmitted by each of a plurality of carriers. For example, the at least one carrier includes the first carrier, and the first carrier is used to transmit the first PDSCH. In this case, the PDSCH transmitted by the at least one carrier includes the first PDSCH.

[0031] With reference to the first aspect, in a possible implementation, the second information is DCI. It should be noted that the implementation in which the second information is DCI can be combined with any one or more of the possible implementations of the first aspect, and the present application does not limit the same.

[0032] In a second aspect, the present application provides a communication method, which can be executed by a second communication device. The second communication device can be a terminal device, which can be a device or apparatus with a chip or a device or apparatus integrated with a circuit. Alternatively, the second communication device can be a chip, a chip system, a module, or a control unit in the above-mentioned devices or apparatuses. It should be noted that, in the present application, the terminal device can refer to the terminal device itself, or a chip, a functional module, or an integrated circuit in the terminal device that completes the method provided by the present application. The present application does not limit the same. In the second aspect and possible implementations thereof, the method is taken as an example executed by a terminal device. For example, the chip in the present application includes, but is not limited to, a Modem chip, also known as a baseband chip, or a system on chip (SoC) chip or a system in package (SIP) chip containing a modem core, which will not be described hereinafter.

[0033] The method includes: receiving, by the terminal device, first information, the first information being used to indicate a first packet, the first packet including at least two carriers, the first packet corresponding to a first HARQ entity; and receiving second information, the second information being used to schedule at least one carrier in the first packet, the at least one carrier corresponding to the first HARQ entity.

[0034] With reference to the second aspect, in a possible implementation, the at least one carrier corresponds to a first HARQ process, and the first HARQ entity includes the first HARQ process.

[0035] With reference to the second aspect, in a possible implementation, the at least one carrier includes a first carrier, and the first carrier is used to transmit a first PDSCH; and the second information includes first indication information, the first indication information being used to indicate a HARQ entity corresponding to the first carrier in the case of performing first PDSCH retransmission.

[0036] With reference to the second aspect, in a possible implementation of the second aspect, the HARQ entity corresponding to the first carrier is the second HARQ entity, and the first indication information is used to indicate a second HARQ process in the second HARQ entity corresponding to the first carrier; or the HARQ entity corresponding to the first carrier is the first HARQ entity, and the first indication information is used to indicate a third HARQ process in the first HARQ entity corresponding to the first carrier.

[0037] With reference to the second aspect, in a possible implementation of the second aspect, the second information is used to schedule a plurality of carriers in the first packet, and the method further includes: receiving third information, the third information being used to schedule a second carrier, the second carrier corresponding to a third HARQ entity, the third HARQ entity including a HARQ process corresponding to the second carrier.

[0038] With reference to the second aspect, in a possible implementation of the second aspect, the second information includes second indication information and / or third indication information, the second indication information being used to indicate at least one carrier, and the third indication information being used to indicate the first HARQ process. It should be noted that the implementation in which the second information includes the second indication information and / or the third indication information can be combined with any one or more of the possible implementations of the second aspect, and the present application does not limit this.

[0039] With reference to the second aspect, in a possible implementation of the second aspect, when the first HARQ process is occupied, a carrier that is not called in the first packet does not use the first HARQ process. It should be noted that the implementation in which, when the first HARQ process is occupied, a carrier that is not called in the first packet does not use the first HARQ process can be combined with any one or more of the possible implementations of the second aspect, and the present application does not limit this.

[0040] With reference to the second aspect, in a possible implementation of the second aspect, the PDSCH transmitted by the at least one carrier corresponds to the first HARQ process. It should be noted that the implementation in which the PDSCH transmitted by the at least one carrier corresponds to the first HARQ process can be combined with any one or more of the possible implementations of the second aspect, and the present application does not limit this.

[0041] With reference to the second aspect, in a possible implementation of the second aspect, the second information is DCI. It should be noted that the implementation in which the second information is DCI can be combined with any one or more of the possible implementations of the second aspect, and the present application does not limit this.

[0042] In a third aspect, the present application provides a communication apparatus, which can be the first node or a chip / circuit therein. The communication apparatus is configured to execute the method in the first aspect or any possible implementation of the first aspect. The communication apparatus comprises units configured to execute the method in the first aspect or any possible implementation of the first aspect.

[0043] In a fourth aspect, the present application provides a communication apparatus, which can be the terminal device or a chip / circuit therein. The communication apparatus is configured to execute the method in the second aspect or any possible implementation of the second aspect. The communication apparatus comprises units configured to execute the method in the second aspect or any possible implementation of the second aspect.

[0044] In the third aspect or the fourth aspect, the communication apparatus can comprise a transceiver module and a processing module. The specific description of the transceiver module and the processing module can also be referred to the apparatus embodiment shown below. The beneficial effects of the third aspect to the fourth aspect can be referred to the foregoing description of the first aspect to the second aspect, and will not be described here.

[0045] In a fifth aspect, the present application provides a communication apparatus, which comprises a processor configured to execute the method described in the first aspect, or the second aspect or any possible implementation of the second aspect.

[0046] In a sixth aspect, the present application provides a communication apparatus, which comprises a processor and a memory coupled to the processor. The memory stores instructions that, when executed by the processor, cause the communication apparatus to perform the method described in the first aspect, or the second aspect or any possible implementation of the second aspect.

[0047] In a possible implementation, the communication apparatus further comprises a memory. Optionally, the processor and the memory are integrated together (i.e. the memory is an internal memory). Optionally, the memory and the processor are independently arranged (i.e. the memory is an external memory).

[0048] In a seventh aspect, the present application provides a communication apparatus, which can comprise a processor and an interface circuit connected to the processor. The interface circuit is configured to interact (or transceive or input and output) information or data, and the processor is configured to run program instructions, so that the communication apparatus executes the method described in the first aspect, or the second aspect or any possible implementation of the second aspect. The interface circuit can be a communication interface or a transceiver. The transceiver can be a radio frequency module in the communication apparatus, or a combination of a radio frequency module and an antenna, or an input and output interface of a chip or circuit.

[0049] In an eighth aspect, the present application provides a readable storage medium, which stores program instructions, and when the program instructions are executed on a computer, the computer is caused to perform the method described in the first aspect, or the second aspect, or any possible implementation of any of the aspects.

[0050] In a ninth aspect, the present application provides a program product containing program instructions, and when the program instructions are executed, the method described in the first aspect, or the second aspect, or any possible implementation of any of the aspects is performed.

[0051] In a tenth aspect, the present application provides an apparatus, which can be implemented in the form of a chip or in the form of a device, and the apparatus includes a processor. The processor is configured to read and execute program stored in a memory to perform the information interaction method provided in the first aspect, or one or more of the second aspects, or any possible implementation of any of the aspects. Optionally, the apparatus further includes a memory, and the memory is connected to the processor through a circuit. Further optionally, the apparatus further includes a communication interface, and the processor is connected to the communication interface. The communication interface is configured to receive information to be processed, the processor acquires the information from the communication interface, processes the information, and outputs the processing result through the communication interface. The communication interface can be an input / output interface.

[0052] In a possible implementation, the processor and the memory described above can be physically independent units, or the memory can be integrated with the processor.

[0053] In an eleventh aspect, the present application provides a communication system, which includes a network device and a terminal device; wherein the network device is configured to perform the method described in the first aspect, or any possible implementation of the first aspect, and the terminal device is configured to perform the method described in the second aspect, or any possible implementation of the second aspect.

[0054] The technical effects achieved by the above aspects can be referred to each other or to the beneficial effects shown in the method embodiments below, which will not be described here. BRIEF DESCRIPTION OF DRAWINGS

[0055] FIG. 1 is a schematic diagram of an open radio access network (O-RAN or ORAN) system provided by an embodiment of the present application;

[0056] FIG. 2 is a structural schematic diagram of an access network device provided by an embodiment of the present application;

[0057] FIG. 3 is a schematic diagram of a communication system provided by an embodiment of the present application;

[0058] FIG. 4 is a schematic diagram of another communication system according to an embodiment of the present application;

[0059] FIG. 5 is a schematic diagram of a single DCI scheduling multiple CCs of PDSCH according to an embodiment of the present application;

[0060] FIG. 6 is a flow diagram of a communication method according to an embodiment of the present application;

[0061] FIG. 7 is a flow diagram of another communication method according to an embodiment of the present application;

[0062] FIG. 8 is a schematic diagram of a communication apparatus according to an embodiment of the present application;

[0063] FIG. 9 is a schematic diagram of another communication apparatus according to an embodiment of the present application;

[0064] FIG. 10 is a schematic diagram of still another communication apparatus according to an embodiment of the present application;

[0065] FIG. 11 is a schematic diagram of a terminal device according to an embodiment of the present application;

[0066] FIG. 12 is a schematic diagram of a base station according to an embodiment of the present application. DETAILED DESCRIPTION

[0067] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, any other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0068] In the present application, the reference to “one embodiment” or “some embodiments” means that the specific features, structures or characteristics described in connection with the embodiment are included in one or more embodiments of the present application. Therefore, the statements “in one embodiment”, “in some embodiments”, “in other some embodiments”, “in further some embodiments” and the like appearing in different places in the specification are not necessarily all referring to the same embodiment, but mean “one or more but not all embodiments”, unless otherwise specifically emphasized. The terms “include”, “contain”, “have” and their variants mean “including but not limited to”, unless otherwise specifically emphasized.

[0069] In the description of the present application, unless otherwise specified, " / " means "or", for example, A / B can mean A or B. "And / or" herein is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist together, and B exists alone. In addition, "at least one" means one or more, and "multiple" means two or more. "At least one of the following" or the like means any combination of the items, including single item or multiple items. For example, at least one of a, b, or c can mean: 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.

[0070] It can be understood that in the present application, "indication" can include direct indication, indirect indication, display indication, and implicit indication. When describing that certain indication information is used to indicate A, it can be understood that the indication information carries A, directly indicates A, or indirectly indicates A.

[0071] In addition, in the embodiments of the present application, the words "exemplarily", "such as" and the like are used to represent examples, illustrations or descriptions. Any embodiment or design scheme described as "example" in the present application should not be interpreted as more preferred or more advantageous than other embodiments or design schemes. Rather, the use of the word "example" is intended to present the concept in a specific way. In the embodiments of the present application, "of", "corresponding" and "corresponding" are sometimes mixed. It should be pointed out that when the difference is not emphasized, the meanings expressed are consistent.

[0072] Firstly, some technical terms related to the present application are introduced.

[0073] 1、DCI

[0074] The message of PDCCH transmission is DCI (downlink control information). DCI is control information related to physical uplink shared channel (PUSCH), PDSCH, including resource block (Resource Block, RB) resource allocation information, modulation and coding scheme (MCS), HARQ-ID, initial transmission or retransmission related information, layer, precoding and other related content. In order to receive PDSCH, user equipment (user equipment, UE) needs to decode PDCCH first.

[0075] DCI format: Different DCI information, its purpose can be different, such as, there are DCI for downlink RB resource allocation, there are DCI for uplink RB resource allocation. The protocol classifies these DCI, and distinguishes them by different DCI formats.

[0076] For example, Table 1 exemplarily shows several DCI formats.

[0077] Table 1

[0078] As shown in Table 1, DCI format0_1, DCI format0_2 and DCI format0_3 are scheduling information for PUSCH; DCI format1_1, DCI format1_2 and DCI format1_3 are scheduling information for PDSCH. DCI format0_3 (referred to as DCI0-3) and DCI format1_3 (referred to as DCI1-3) correspond to the scenario of one DCI scheduling multiple CCs of PDSCH or PUSCH (referred to as single DCI scheduling multi-CC transmission); DCI format0_1 (referred to as DCI0-1), DCI format0_2 (referred to as DCI0-2), DCI format1_1 (referred to as DCI1-1) and DCI format1_2 (referred to as DCI1-2) correspond to the scenario of one DCI scheduling one CC of PDSCH or PUSCH (also referred to as per-CC independent scheduling).

[0079] For example, Table 2 exemplarily shows part of the field configuration information of DCI format1_1.

[0080] Table 2

[0081] 2、HARQ

[0082] HARQ is a kind of retransmission mechanism of medium access control (MAC) layer. The receiving party immediately feeds back the result of successful or failed information transmission to the sending party, so as to realize fast retransmission.

[0083] The HARQ mechanism uses a stop-and-wait protocol, which is characterized in that the receiving party sends feedback information to the sending party, and the sending party needs to receive the acknowledgement information from the receiving party before continuing to send messages. This stop-and-wait protocol requires the sending party to stop and wait for the feedback from the receiving party after sending a message, which will result in a very low throughput. Therefore, the HARQ adopts multiple stop-and-wait processes for parallel processing, that is, while one process is waiting for an acknowledgement, the sending party can continue to send messages using another process.

[0084] Multiple HARQ processes are processed in parallel to form a HARQ entity, and each uplink or downlink carrier corresponds to a HARQ entity. The protocol 38.214 defines that a HARQ entity supports a maximum of 16 HARQ processes.

[0085] The technical solutions of the present application can be applied to various communication systems. For example, the fifth generation mobile communication (5th generation, 5G) system, the new radio (new radio, NR) system, the long term evolution (long term evolution, LTE) system, the LTE frequency division duplex (frequency division duplex, FDD) system, the LTE time division duplex (time division duplex, TDD), the universal mobile communication system (universal mobile telecommunication system, UMTS), the mobile communication system after the 5G network (for example, the future mobile communication system), the vehicle to everything (vehicle to everything, V2X) communication system, the device to device (device to device, D2D) communication system, the Internet of Things communication system, the industrial Internet communication system, or the satellite communication system, etc. The wireless communication system involved in the present application also includes but is not limited to: narrowband Internet of Things system (narrow band-internet of things, NB-IoT).

[0086] The communication system to which the present application is applicable includes a network device and a terminal device. The network device and the terminal device are introduced as follows.

[0087] The terminal device can be a wireless terminal device capable of receiving network device scheduling information and indication information. The terminal device can be a device that provides voice and / or data connectivity to a user, or a handheld device with wireless connection function, or other processing devices connected to a wireless modem.

[0088] A terminal device, also referred to as a UE, a mobile station (MS), a mobile terminal (MT), a customer premise equipment (CPE), etc. A terminal device is a device including a wireless communication function (providing voice / data connectivity to a user). A terminal can be a transportation vehicle, a communication module having a wireless communication function. For example, a handheld device having a wireless connection function, or a vehicle-mounted device, etc. Currently, some examples of terminal devices are: a mobile phone, a tablet computer, a notebook computer, a palm computer, a mobile internet device (MID), a wearable device, a virtual reality (VR) device, an augmented reality (AR) device, a wireless terminal device in industrial control, a wireless terminal device in Internet of Vehicles, a wireless terminal device in self driving, a wireless terminal device in remote medical surgery, a wireless terminal device in smart grid, a wireless terminal device in transportation safety, a wireless terminal device in smart city, or a wireless terminal device in smart home, etc. For example, a wireless terminal device in self driving can be a drone, a helicopter, or an airplane, etc. For example, a wireless terminal device in Internet of Vehicles can be a vehicle-mounted device, a whole-vehicle device, a vehicle-mounted module, a vehicle, or a ship, etc. A wireless terminal device in industrial control can be a camera, a robot, or a mechanical arm, etc. A wireless terminal device in smart home can be a television, an air conditioner, a sweeping machine, a sound box, or a set-top box, etc.

[0089] It should be noted that the terminal device can be a device or apparatus with a chip, or a device or apparatus integrated with a circuit, or a chip, a chip system, a module or a control unit in the above-mentioned device or apparatus, and the specific application is not limited. It should be noted that in this application, when referring to a terminal device, it can refer to the terminal device itself, or a chip, a functional module or an integrated circuit in the terminal device that completes the method provided in the application, and the specific application is not limited.

[0090] A network device is a device deployed in a wireless access network to provide a wireless communication function for a terminal device. The network device can also be referred to as a radio access network (RAN) entity, an access node, a network node, an access network device, or a communication apparatus, etc.

[0091] Specifically, the network device can be an access network device of a 3rd generation partnership project (3GPP) related cellular system. For example, a fourth-generation (4G) mobile communication system, a 5G mobile communication system, or a future mobile communication system. The network device can also be an access network device in an open RAN (O-RAN or ORAN) or a cloud radio access network (CRAN). Alternatively, the network device can also be an access network device in a communication system obtained by fusing two or more of the above communication systems.

[0092] The network device includes, but is not limited to, an evolved Node B (eNB), a radio network controller (RNC), a Node B (NB), a base station controller (BSC), a base transceiver station (BTS), a home base station (for example, a home evolved NodeB, or home Node B, HNB), a baseband unit (BBU), an access point (AP) in a wireless fidelity (WiFi) system, a macro base station, a micro base station, a wireless relay node, a donor node, a wireless controller in a CRAN scenario, a wireless backhaul node, a transmission point (TP), or a transmission and reception point or transmit / receive point (TRP). The network device can also be an access network device in a 5G mobile communication system. For example, a next generation NodeB (gNB) in a new radio (NR) system, a TRP, a TP, or one or a group (including multiple antenna panels) of antenna panels of a base station in a 5G mobile communication system. Alternatively, the network device can also be a network node constituting a gNB or a transmission point. For example, a centralized unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU), etc. The CU and the DU can be separately arranged, or can be included in the same network element. For example, a BBU. The RU can be included in a radio frequency device or a radio frequency unit. For example, in a remote radio unit (RRU), an active antenna unit (AAU), or a remote radio head (RRH). Alternatively, the network device can also be a server, a wearable device, a vehicle or a vehicle-mounted device, etc. For example, in V2X technology, the network device can be a road side unit (RSU).

[0093] It should be noted that in different systems, the CU (or CU-CP and CU-UP), DU or RU can also have different names, but those skilled in the art can understand their meanings. For example, in the ORAN system, the CU can also be referred to as an open centralized unit (O-CU) or an open CU, the DU can also be referred to as an open distributed unit (O-DU), the centralized unit control plane (CU-CP) can also be referred to as an open centralized unit control plane (O-CU-CP) or an open CU-CP, the centralized unit user plane (CU-UP) can also be referred to as an open centralized unit user plane (O-CU-UP) or an open CU-UP, and the RU can also be referred to as an open radio unit (O-RU). The specific application is not limited. Any one of the CU, CU-CP, CU-UP, DU and RU in the present application can be realized by a software module, a hardware module, or a combination of a software module and a hardware module.

[0094] FIG. 1 is a schematic diagram of an open radio access network (O-RAN or ORAN) system provided by an embodiment of the present application. The ORAN system includes a core network, an access network device and a UE. Optionally, the ORAN system can also include other components in addition to the components shown in FIG. 1, and the specific application is not limited.

[0095] The present application can be applied to the system shown in FIG. 1, so that the network device (such as the network device in FIG. 6 or FIG. 7) in the present application can be the access network device in FIG. 1, and the terminal device (such as the terminal device in FIG. 6 or FIG. 7) in the present application can be the UE in FIG. 1.

[0096] The access network device can communicate with the core network (CN) through a backhaul link. The access network device can communicate with the UE through an air interface. Specifically, the BBU in the access network device communicates with the core network through the backhaul link. The RU in the access network device communicates with at least one UE through the air interface. The BBU communicates with at least one RU through a fronthaul link, and the BBU and the RU can be co-located or not co-located.

[0097] The BBU includes at least one CU and at least one DU, and the CU and the DU can communicate through at least one midhaul link.

[0098] In a possible implementation, as shown in FIG. 2, the CU is a logical node that carries radio resource control (RRC), a service data adaptation protocol (SDAP) layer, a packet data convergence protocol (PDCP) layer, and other control functions of an access network device. The CU can be connected to network nodes such as a core network through some interfaces. For example, an E2 interface. Optionally, the CU can have part of the functions of the core network. The CU (for example, the PDCP layer and / or higher layers of the CU) is connected to the DU (for example, the radio link control (RLC) layer and lower layers of the DU) through some interfaces. For example, an F1 interface. Optionally, the F1 interface can provide control plane (C-Plane) and user plane (U-Plane) functions (for example, interface management, system information management, UE context management, RRC message transmission, and the like). F1AP is an application protocol of the F1 interface, which defines signaling procedures of the F1 in some examples. The F1 interface supports a control plane F1-C and a user plane F1-U.

[0099] Optionally, as shown in FIG. 2, the CU can be split into a CU-CP and a CU-UP, where the CU-CP is a logical node carrying the control plane part of PDCP (PDCP-C) layer of RRC layer and packet data convergence protocol layer, used to implement the control plane function of the CU. The CU-CP can interact with a network element in the core network for implementing the control plane function. The network element in the core network for implementing the control plane function can be an access and mobility function network element, such as an access and mobility management (AMF) in a 5G system. The AMF network element is used to be responsible for mobility management in a mobile network, such as location update of a terminal device, registration network of the terminal device, handover of the terminal device, and the like. The CU-UP is a logical node carrying the user plane part of PDCP (PDCP-U) layer of SDAP layer and packet data convergence protocol layer, used to implement the user plane function of the CU. The CU-UP can interact with a network element in the core network for implementing the user plane function. The network element in the core network for implementing the user plane function, for example, a user plane function (UPF) in a 5G system, is used to be responsible for forwarding and receiving data in a terminal device. The above configuration of the CU and the DU is only an example, and in actual application, the CU and the DU can also be configured to have functions according to needs. For example, the CU or the DU can be configured to have more functions of protocol layers, or the CU or the DU can be configured to have partial processing functions of protocol layers. For example, partial functions of the RLC layer and functions of protocol layers above the RLC layer are arranged in the CU, and the remaining functions of the RLC layer and functions of protocol layers below the RLC layer are arranged in the DU. For another example, the functions of the CU or the DU can be divided according to service types or other system requirements, for example, functions that need to meet a relatively short delay requirement in processing time are arranged in the DU, and functions that do not need to meet the delay requirement are arranged in the CU.

[0100] In a possible implementation manner, as shown in FIG. 2, the DU is a logical node carrying the RLC layer, the MAC layer, the higher physical (Higher PHY) layer, and other functions. In some examples, the DU can control at least one RU. The DU is connected to the RU through some interfaces, which can be a front-haul interface. In some examples, the Higher PHY layer includes part of the PHY layer processing, such as forward error correction (FEC) encoding and decoding, scrambling, modulation and demodulation, and the like.

[0101] In one possible implementation, as shown in FIG. 2, the RU is a logical node that hosts lower physical layer (Lower PHY) and radio frequency (RF) processing. In some examples, the RU can be a 3GPP transmission reception point (TRP) or a remote radio head (RRH) or other similar functional entity. In some examples, the Low-PHY includes portions of PHY processing such as fast fourier transform (FFT), inverse fast fourier transformation (IFFT), digital beamforming and filtering, and other processing functions. The RU communicates with one or more UEs over a wireless link.

[0102] The DU and the RU can or can not be co-located. The DU and the RU exchange control plane information and user plane information over a fronthaul link via a lower-layer split-control, user and synchronization (LLS-CUS) interface. The LLS-CUS can include a lower-layer split control (LLS-C) interface and a lower-layer split user (LLS-U) interface that provide control plane (C-Plane) and user plane (U-Plane), respectively. In some examples, the control plane (C-Plane) refers to real-time control between the DU and the RU. The DU and the RU have a LLS-M interface of the fronthaul link to exchange management information, and the management plane (M-Plane) refers to non-real-time management operations between the DU and the RU.

[0103] The DU and the RU can cooperate to collectively implement the functionality of the PHY layer. One DU can be connected to one or more RUs. The functionalities that the DU and the RU have can be configured in multiple ways according to design. For example, the DU is configured to implement baseband functionality, and the RU is configured to implement mid- RF functionality. As another example, the DU is configured to implement high-layer functionality in the PHY layer, and the RU is configured to implement low-layer functionality in the PHY layer or to implement the low-layer functionality and RF functionality. The high-layer functionality in the PHY layer can include a portion of the functionality of the PHY layer that is closer to the MAC layer, and the low-layer functionality in the PHY layer can include another portion of the functionality of the PHY layer that is closer to the mid-RF side.

[0104] The CU (or CU-CP and CU-UP), DU or RU can also have different names in different systems, but those skilled in the art can understand their meanings. For example, in the ORAN system, the CU can also be referred to as O-CU (open CU), the DU can also be referred to as O-DU, the CU-CP can also be referred to as O-CU-CP, the CU-UP can also be referred to as O-CU-UP, and the RU can also be referred to as O-RU. For the convenience of description, the CU, CU-CP, CU-UP, DU and RU are taken as examples for description in the present application.

[0105] It should be noted that the network device can be a device or apparatus with a chip, or a device or apparatus integrated with a circuit, or a chip, chip system, module or control unit in the above-mentioned device or apparatus, and the specific application is not limited. It should be noted that in the present application, when referring to the network device, it can refer to the network device itself, or the chip, functional module or integrated circuit in the network device that completes the method provided in the present application, and the specific application is not limited.

[0106] In order to facilitate understanding of the technical solutions of the embodiments of the present application, two possible communication systems to which the method provided by the embodiments of the present application is applicable are shown in FIGS. 3 and 4.

[0107] FIG. 3 is a schematic diagram of a communication system provided by an embodiment of the present application. As shown in FIG. 3, the communication system includes at least one network device and at least one terminal device. For example, as shown in FIG. 3, the network device 311, the terminal device 321 and the terminal device 322. The network device 311 can perform transmission between the terminal device 321 and the terminal device 322. The network device 311 and the terminal device 321 or the terminal device 322 can perform the technical solutions of the present application.

[0108] The present application can be applied to the system shown in FIG. 3, so that the network device (such as the network device in FIG. 6 or FIG. 7) in the present application can be the network device 311 in FIG. 3, and the terminal device (such as the terminal device in FIG. 6 or FIG. 7) in the present application can be the terminal device 321 and / or the terminal device 322 in FIG. 1.

[0109] FIG. 4 is a schematic diagram of another communication system according to an embodiment of the present application. As shown in FIG. 4, the communication system can include at least two network devices and at least one terminal device. For example, as shown in FIG. 4, the network device 411, the network device 412, the network device 413 and the terminal device 421. The terminal device 421 can be provided with communication services by multiple network devices. For example, as shown in FIG. 4, the network device 411 can perform transmission with the terminal device 421, the network device 412 can perform transmission with the terminal device 421. The network device 413 can perform transmission with the terminal device 421. That is, one terminal device can be provided with communication services by multiple network devices at the same time. The terminal device 421 and the network device 411, the network device 412 or the network device 413 can perform the technical solutions of the present application.

[0110] The present application can be applied to the system shown in FIG. 4. Then, the network device in the present application (such as the network device in FIG. 6 or FIG. 7) can be the network device 411 and / or the network device 412 in FIG. 3, and the terminal device in the present application (such as the terminal device in FIG. 6 or FIG. 7) can be the terminal device 421 in FIG. 1.

[0111] The message of the PDCCH transmission is DCI, which is used to indicate the control information related to the PDSCH. The DCI is used to indicate the resource allocation information of the PDSCH, the MCS, the HARQ-ID, the initial transmission or retransmission related information, or the precoding information. In order for the terminal device to receive the PDSCH from the network device, the terminal device needs to decode the PDCCH first to determine the frequency domain resource location of the PDSCH.

[0112] At present, a single DCI is introduced, which supports one DCI scheduling multiple CCs of PDSCH. In the DCI, there is an independent HARQ field for each CC. As shown in FIG. 5, the network device sends a single DCI, which is used to schedule the PDSCH of CC1 to CC4. For each CC, the single DCI has a corresponding HARQ field, which is used to indicate the HARQ resource (such as the HARQ process) corresponding to the CC.

[0113] It should be noted that each CC in FIG. 5 can also use an independent code word for transmission, that is, the transmission parameters on different CCs are independent of each other. For example, in the DCI, for each CC, the single DCI has a corresponding MCS field, a frequency domain resource assignment (FDRA) field, etc., thereby indicating the transmission parameters and the allocated frequency domain resources of the CC.

[0114] Currently, since each CC corresponds to a HARQ entity, the HARQ field in the DCI is independently indicated, that is, each CC has its corresponding HARQ field (such as the HARQ process number), so in the scenario where a single DCI supports a DCI scheduling multiple CCs PDSCH, the HARQ field in the DCI is longer, resulting in the payload contained in the DCI doubling, and the overhead of the DCI being larger. For example, if the HARQ field of 1 CC occupies about 4 bits, the HARQ field of 4 CCs occupies about 4x4 = 16 bits, resulting in the payload contained in the DCI doubling, and the overhead of the DCI being larger.

[0115] The present application provides a communication method and related apparatus, in which the network device can send first information to the terminal device, the first information being used to indicate a first group, the first group including at least two carriers, the first group corresponding to a first HARQ entity; the network device sends second information to the terminal device, the second information being used to schedule at least one carrier in the first group, the at least one carrier corresponding to the first HARQ entity. In this method, multiple carriers can correspond to one HARQ entity, when the network device schedules a carrier in the first group, the HARQ entity corresponding to the carrier can be the HARQ entity corresponding to the group (i.e. the first group) where the carrier is located (i.e. the first HARQ entity), which can reduce the indication (such as the HARQ field) of the carrier and the HARQ entity, thereby reducing the overhead of the second information (such as the DCI).

[0116] The technical solutions of the present application will be further described below with reference to specific embodiments. FIG. 6 is a flowchart of a communication method provided by an embodiment of the present application.

[0117] The functions performed by the terminal device in the embodiments of the present application can also be performed by a module (for example, a chip) in the terminal device; the functions performed by the network device in the embodiments of the present application can also be performed by a module (for example, a chip) in the network device.

[0118] Referring to FIG. 6, the method can include the following steps:

[0119] Step S601: The network device sends first information to the terminal device, the first information being used to indicate a first group, the first group including at least two carriers, the first group corresponding to a first HARQ entity.

[0120] Correspondingly, the terminal device receives the first information from the network device.

[0121] Optionally, the first information can also be used to indicate other groups in addition to the first group, that is, the first information can be used to indicate one or more groups, if the first information is used to indicate one group, the first information is used to indicate the first group, and if the first information is used to indicate multiple groups, the multiple groups include the first group.

[0122] In some embodiments, the network device can group the plurality of CCs into N groups, each of the N groups comprising at least two CCs, N being a positive integer, the N groups comprising the first group, and each of the N groups having a corresponding HARQ entity.

[0123] Optionally, the grouping information (or the first information) can comprise all or part of information of the N groups, e.g., the first information is used to indicate the N groups or part of the N groups.

[0124] For example, the plurality of CCs are CC1, CC2, CC3 and CC4, the network device groups CC1 and CC2 into a group (referred to as group 1 for convenience of description) and groups CC3 and CC4 into a group (referred to as group 2 for convenience of description), then, assuming that the group 1 is the first group, the first information can be used to indicate that CC1 and CC2 correspond to the same HARQ entity; or, assuming that the group 2 is the first group, the first information can be used to indicate that CC3 and CC4 correspond to the same HARQ entity; or, the first information can be used to indicate that CC1 and CC2 correspond to the same HARQ entity and CC2 and CC3 correspond to the same HARQ entity.

[0125] Optionally, any two of the N groups correspond to different HARQ entities, e.g., the group 1 and the group 2 correspond to different HARQ entities.

[0126] For example, the first information can be an RRC or an RRC message, or the first information is a field in the RRC, or the first information belongs to the RRC message, or the RRC message comprises the first information.

[0127] It should be understood that the application can also refer to the group as a CC group or other names, e.g., refer to the first group as a first CC group; the HARQ entity corresponding to the group (e.g., the first HARQ entity) can be referred to as a CC group level HARQ entity, and the HARQ entity corresponding to a single carrier can be referred to as a CC level HARQ entity; the HARQ process in the CC group level HARQ entity can be referred to as a CC group level HARQ process (or a cell group level HARQ process), and the HARQ process in the CC level HARQ entity can be referred to as a CC level HARQ process (or a cell level HARQ process), which is not limited by the application.

[0128] Step S602: The network device sends second information to the terminal device, the second information being used to schedule at least one carrier in the first group, the at least one carrier corresponding to the first HARQ entity.

[0129] Correspondingly, the terminal device receives second information from the network device.

[0130] The second information can also mean that the second information is used to schedule at least one carrier, and the group in which the at least one carrier is located is the first group (or the first group includes the at least one carrier).

[0131] In some embodiments, after receiving the second information, the terminal device can determine the HARQ entity corresponding to the at least one carrier scheduled by the second information based on the second information. For example, when the terminal device determines that the first group includes the at least one carrier, the terminal device can determine that the HARQ entity corresponding to the at least one carrier is the HARQ entity corresponding to the first group (i.e., the first HARQ entity). For another example, when the format of the second information is a preset format, the terminal device can determine that the HARQ entity corresponding to the at least one carrier is the first HARQ entity.

[0132] For example, the second information can be DCI, or the second information can be a field in the DCI, or the DCI includes the second information, or the second information belongs to the DCI.

[0133] For example, the at least one carrier corresponds to a first HARQ process, and the first HARQ entity includes the first HARQ process. That is, one or more carriers scheduled by the second information can correspond to a HARQ process in the HARQ entity corresponding to the group in which the carrier is located.

[0134] For example, the at least one carrier includes a first carrier, and the first carrier is used to transmit a first PDSCH; the second information includes first indication information, and the first indication information is used to indicate the HARQ entity corresponding to the first carrier in the case of performing first PDSCH retransmission. For example, the first indication information is used to indicate a second HARQ process in a second HARQ entity corresponding to the first carrier; or the first indication information is used to indicate a third HARQ process in the first HARQ entity corresponding to the first carrier.

[0135] Optionally, the second information is used for scheduling multiple carriers in the first group, the multiple carriers belong to the same group, and the HARQ entity corresponding to the multiple carriers is the HARQ entity corresponding to the group. For example, the first group includes the multiple carriers, the HARQ entity corresponding to the multiple carriers is the first HARQ entity corresponding to the first group. Assuming that the network device sends third information, the third information is used for scheduling a single carrier, such as a second carrier, the second carrier corresponds to a third HARQ entity, and the third HARQ entity includes a HARQ process corresponding to the second carrier. It should be understood that the first HARQ entity is a CC group-level HARQ entity, and a process (such as a first HARQ process) in the first HARQ entity is a CC group-level HARQ process; the third HARQ entity is a CC-level HARQ entity, and a HARQ process corresponding to the second carrier included in the third HARQ entity is a CC-level HARQ process.

[0136] In some embodiments, the terminal device can determine the HARQ entity corresponding to the carrier scheduled by the scheduling information based on the number of carriers scheduled by the scheduling information (such as the second information or the third information described above). For example, if the number of carriers scheduled by the scheduling information is multiple, the terminal device can determine that the HARQ entity corresponding to the carrier scheduled by the scheduling information is the HARQ entity corresponding to the group to which the carrier belongs (a CC group-level HARQ process); if the number of carriers scheduled by the scheduling information is single, the terminal device can determine that the HARQ entity corresponding to the carrier scheduled by the scheduling information is the HARQ entity corresponding to the carrier (a CC-level HARQ process), such as the third information.

[0137] Optionally, the number of carriers scheduled by the scheduling information is related to the format of the scheduling information. For example, the scheduling information (such as the second information or the third information described above) is DCI, if the DCI format of the DCI is DCI1-3 or DCI0-3, the number of carriers scheduled by the DCI is multiple, such as if the DCI format of the second information is DCI1-3 or DCI0-3, the second information is used for scheduling multiple carriers; if the DCI format of the DCI is DCI1-1 or DCI1-2 or DCI0-1 or DCI0-2, the number of carriers scheduled by the DCI is single, such as if the DCI format of the third information is DCI1-1 or DCI1-2 or DCI0-1 or DCI0-2. Then, the terminal device can determine the HARQ entity corresponding to the carrier based on the format of the scheduling information and the carrier indicated by the scheduling information.

[0138] Taking the scheduling information as an example, if the DCI format of the DCI is DCI1-3 or DCI0-3, the terminal device can determine the HARQ entity corresponding to the carrier scheduled by the DCI as the HARQ entity corresponding to the group to which the carrier belongs (the HARQ process at the CC group level); if the DCI format of the DCI is DCI1-3 or DCI0-3, the terminal device can determine the HARQ entity corresponding to the carrier scheduled by the DCI as the HARQ entity corresponding to the carrier (the HARQ process at the CC level), such as the scheduling information being the third information. Optionally, the second information can include second indication information and / or third indication information, where the second indication information is used to indicate at least one carrier, for example, each carrier has a corresponding carrier identifier, and the second indication information can be the carrier identifier corresponding to each carrier in the at least one carrier; the third indication information is used to indicate the first HARQ process, for example, the third indication information can be the HARQ process number of the first HARQ process. Exemplarily, the second information is a DCI, and the second indication information and / or the third indication information can be a field in the DCI.

[0139] Optionally, when the first HARQ process is occupied, the carrier not called in the first group does not use the first HARQ process.

[0140] In some embodiments of the present application, the PDSCH transmitted by the at least one carrier corresponds to the first HARQ process. That is to say, the PDSCH transmitted by the carriers belonging to the same group in the carriers scheduled by the second information corresponds to the same HARQ process, which is one of the HARQ processes in the HARQ entity corresponding to the group.

[0141] It should be noted that the present application can also be applied to a multi-CC common code word scenario, that is, multiple CCs share configuration parameters, and the configuration parameters include FDRA, MCS, etc. It can also be applied to a multi-CC non-common code word scenario, that is, each CC uses an independent code word for transmission, and the transmission parameters on different CCs are independent of each other, and the present application does not limit this. The embodiments of the present application can be applied to a scenario where one DCI schedules PDSCH of multiple CCs, and can also be applied to a scenario where one DCI schedules PUSCH of multiple CCs, and the present application does not limit this.

[0142] The method embodiment shown in FIG. 6 includes many possible implementation schemes. Some implementation schemes will be exemplified below in combination with FIG. 7. It should be noted that the related concepts, operations or logical relationships not explained in FIG. 7 can be referred to the corresponding description in the embodiment shown in FIG. 6.

[0143] In the present application, the embodiments shown in FIG. 7 can be taken as a separate embodiment, and the embodiments shown in FIG. 7 can not depend on the technical solutions of FIG. 6; and some steps in the embodiments shown in FIG. 7 can also be taken as a separate embodiment.

[0144] Next, taking the scenario of single DCI supporting PDSCH of multiple CCs scheduled by one DCI as an example, the flow of another communication method of the present application is introduced in combination with FIG. 7.

[0145] The functions performed by the terminal device in the embodiments of the present application can also be performed by a module (for example, a chip) in the terminal device, and the functions performed by the network device in the embodiments of the present application can also be performed by a module (for example, a chip) in the network device.

[0146] For example, in the embodiments of the present application, the first information is part or part of the DCI configuration information, the second information is the PDCCH or the DCI of the PDCCH transmission, and the first grouping is any CC group.

[0147] As shown in FIG. 7, the method can include the following steps:

[0148] S701: The network device sends DCI configuration information to the terminal device, and the DCI configuration information includes grouping information of CCs.

[0149] Correspondingly, the terminal device receives the DCI configuration information from the network device.

[0150] For example, the DCI configuration information includes one or more CC group information, and each CC group information can be used to indicate CC information belonging to the same CC group. For example, the DCI configuration information includes 2 CC group information (for convenience, referred to as CC group information 1 and CC group information 2), the CC group information 1 is used to indicate that CC1 and CC2 are a CC group, and the CC group information 2 is used to indicate that CC3 and CC4 are a CC group.

[0151] In some embodiments, the network device can configure the grouping information, that is, the RRC layer of the network device can group multiple CCs to obtain multiple CC groups, for example, the first grouping is a CC group in the multiple CC groups; and then the network device can configure whether to enable the CC group level HARQ process for the CC group, for example, the network device sends the DCI configuration information to the terminal device, and the DCI configuration information includes CC information of at least one CC group, and the CC information of the at least one CC group is used to indicate that the same CC group enables the CC group level HARQ process, that is, the CCs in the same CC group apply one HARQ process.

[0152] In some embodiments of the present application, the CC group level HARQ process and the CC level HARQ process can coexist. For example, when single DCI multi-CC transmission is adopted (when DCI1-3 or DCI0-3 is adopted for scheduling), the CC group level HARQ process is adopted; when per-CC independent scheduling is adopted (when DCI1-1 or DCI1-2 or DCI0-1 or DCI0-2 is adopted for scheduling), the CC level HARQ process is adopted.

[0153] S702: The network device sends a PDCCH to the terminal device.

[0154] Correspondingly, the terminal device receives the PDCCH from the network device.

[0155] In some embodiments, the PDCCH transmitted message is DCI, and the DCI format of the DCI can be DCI1-3 or DCI0-3.

[0156] For example, the DCI is used to schedule one or more CCs in any of the above-mentioned multiple CC groups, and the DCI can also indicate one HARQ process (such as HARQ process 1) for the one or more CCs, and the HARQ process 1 is a HARQ process in the HARQ entity corresponding to the CC group where the one or more CCs are located. Where, the PDSCH transmitted by the one or more CCs corresponds to the HARQ process 1; if the HARQ process 1 is occupied, the CCs in the CC group that are not scheduled cannot adopt the HARQ process.

[0157] For another example, the DCI is used to schedule one or more CCs in part of the above-mentioned multiple CC groups, and the DCI can also indicate the HARQ process corresponding to the CC group for different CC groups, and the HARQ process corresponding to the CC group is a HARQ process in the HARQ entity corresponding to the CC group. For example, the DCI is used to schedule one or more CCs (for convenience of description, referred to as first CC) in CC group 1 and one or more CCs (for convenience of description, referred to as second CC) in CC group 2, and the DCI can also indicate one HARQ process for the first CC, and the HARQ process is a HARQ process in the HARQ entity corresponding to the CC group 1, and the DCI can also indicate one HARQ process for the second CC, and the HARQ process is a HARQ process in the HARQ entity corresponding to the CC group 2.

[0158] S703: The terminal device performs PDCCH receiving processing based on the DCI configuration information.

[0159] In some embodiments, the terminal device can process the received DCI of the PDCCH transmission based on the DCI configuration information.

[0160] For example, the terminal device can determine the HARQ process number corresponding to the CC scheduled by the DCI based on the DCI configuration information, the DCI format of the DCI, the CC identifier in the DCI, and the HARQ process number. For example, the terminal device determines, based on the DCI configuration information, that the CC corresponding to the CC identifier in the DCI is a CC in the CC group 1; then, in a case where the terminal device determines that the DCI format of the DCI is DCI1-3 or DCI0-3, the terminal device can determine that the HARQ process corresponding to the CC scheduled by the DCI is one of the HARQ processes in the HARQ entity corresponding to the CC group 1, and then the terminal device can determine the HARQ process corresponding to the CC scheduled by the DCI based on the HARQ process number and the HARQ entity corresponding to the CC group 1.

[0161] Optionally, the application can also perform retransmission for the PDSCH scheduled by the multi-CC scheduling (such as DCI1-3) through per-CC independent scheduling (such as DCI1-1 or DCI1-2 or DCI0-1 or DCI0-2) to avoid wasting the HARQ process at the CC group level. For example, the DCI can also indicate whether the DCI schedules retransmission of the CC group level PDSCH transmission or the CC level PDSCH transmission, such as through a 1-bit field, if the 1-bit is 1, it indicates that the DCI schedules retransmission of the CC group level PDSCH transmission, and the HARQ process number in the DCI indicates the HARQ process corresponding to the CC group of the CC; if the 1-bit is 0, it indicates that the DCI schedules the CC level PDSCH transmission, and the HARQ process number in the DCI indicates the HARQ process corresponding to the CC.

[0162] The embodiments of the application can realize the HARQ resource indication of multi-CC single DCI scheduling, and can reduce the DCI load overhead.

[0163] It should be noted that the application (such as the embodiments of FIG. 6 and FIG. 7) can be applied to an open RAN architecture. The open RAN architecture and the corresponding network elements / modules can be as shown in FIG. 1. When the above embodiments are applied to the open RAN architecture, the method flow can be the same as that of FIG. 6 or FIG. 7. Among them, the network device sending information (such as the first information or the second information) or the network device configuring information (such as the configuration grouping information) means that the CU-CP module of the network device sends information or the CU-CP of the network device configures information.

[0164] The structure of a communication device according to an embodiment of the application is shown below. Please refer to FIG. 8. The communication device can be used to execute the process performed by the terminal device in the embodiment shown in FIG. 6. For details, please refer to the related description in the foregoing method embodiments.

[0165] The communication device 900 includes a transceiver module 901 and a processing module 902.

[0166] The processing module 902 is configured to perform data processing. The transceiver module 901 can implement corresponding communication functions. The transceiver module 901 can also be referred to as a communication interface or a communication module.

[0167] Optionally, the communication apparatus 900 can further include a storage module, which can be configured to store program code and / or program instructions and / or data. The processing module 902 can read instructions and / or data in the storage module, so that the communication apparatus 900 implements the foregoing method embodiments.

[0168] The communication apparatus 900 can be configured to perform actions performed by the terminal device in the foregoing method embodiments. For example, the terminal device or a communication module in the terminal device, or a circuit or chip responsible for communication functions in the terminal device. The communication apparatus 900 can be the terminal device or a component configurable to the terminal device. The processing module 902 is configured to perform operations related to processing at the terminal device side in the foregoing method embodiments. The transceiver module 901 is configured to perform operations related to receiving at the terminal device side in the foregoing method embodiments.

[0169] Optionally, the transceiver module 901 can include a sending module and / or a receiving module. The sending module is configured to perform the sending operations in the foregoing method embodiments. The receiving module is configured to perform the receiving operations in the foregoing method embodiments.

[0170] It should be noted that the communication apparatus 900 can include a sending module and not include a receiving module. Alternatively, the communication apparatus 900 can include a receiving module and not include a sending module. Whether the sending module and the receiving module are included in the communication apparatus 900 can depend on whether the communication apparatus 900 performs the sending actions and the receiving actions in the foregoing schemes. For example, the communication apparatus 900 is configured to perform actions performed by the terminal device in the embodiment shown in FIG. 6. Details can be referred to the related description in the embodiment shown in FIG. 6, which will not be described here in detail. For example, the communication apparatus 900 is configured to perform the following scheme:

[0171] The transceiver module 901 is configured to receive first information, the first information being used to indicate a first group, the first group including at least two carriers, the first group corresponding to a first HARQ entity; and receive second information, the second information being used to schedule at least one carrier in the first group, the at least one carrier corresponding to the first HARQ entity.

[0172] For another example, the communication apparatus 900 is configured to perform the following scheme:

[0173] The transceiver module 901 is configured to receive third information, the third information being used to schedule a second carrier, the second carrier corresponding to a third HARQ entity, the third HARQ entity including a HARQ process corresponding to the second carrier.

[0174] Optionally, the processing module 902 is configured to determine the at least one carrier corresponding to the first HARQ entity according to the second information.

[0175] For other implementations, refer to the related descriptions in the foregoing embodiment shown in FIG. 6.

[0176] It should be understood that the specific processes in which the modules perform the corresponding processes are described in detail in the foregoing method embodiments, and thus are not described herein again for simplicity.

[0177] Optionally, when the communication apparatus 900 is a terminal device or a communication module in a terminal device, the processing module 902 in the foregoing embodiments can be implemented by at least one processor or processor-related circuit. Specifically, the processor can include a Modem chip, or a SoC chip or a SIP chip including a Modem core. The transceiver module 901 can be implemented by a transceiver or a transceiver-related circuit. The transceiver module 901 can also be referred to as a communication module or a communication interface. The storage module can be implemented by at least one memory.

[0178] Optionally, when the communication apparatus 900 is a circuit or chip responsible for communication functions in a terminal device, such as a Modem chip or a SoC chip or a SIP chip including a Modem core, the functions of the processing module 902 can be implemented by circuit systems including one or more processors or processing cores in the chip. The functions of the transceiver module 901 can be implemented by interface circuits or data transceiver circuits on the chip.

[0179] Another schematic diagram of a communication apparatus according to an embodiment of the present application is shown below. Please refer to FIG. 9. The communication apparatus can be used to perform the processes performed by the network device in the embodiment shown in FIG. 6. For details, refer to the related descriptions in the foregoing method embodiments.

[0180] The communication apparatus 1000 includes a transceiver module 1001. Optionally, the communication apparatus 1000 further includes a processing module 1002.

[0181] The processing module 1002 is configured to perform data processing. The transceiver module 1001 can implement corresponding communication functions. The transceiver module 1001 can also be referred to as a communication interface or a communication module.

[0182] Optionally, the communication apparatus 1000 can further include a storage module, which can be used to store program codes, program instructions and / or data. The processing module 1002 can read the instructions and / or data in the storage module, so that the communication apparatus 1000 implements the foregoing method embodiments.

[0183] The communication apparatus 1000 can be configured to perform the actions of the network device in the above method embodiments. For example, the network device or a communication module in the network device, or a circuit or chip responsible for communication functions in the network device. The communication apparatus 1000 can be the network device or a component configurable to the network device. The processing module 1002 is configured to perform the processing-related operations of the network device side in the above method embodiments. The transceiver module 1001 is configured to perform the receiving-related operations of the network device side in the above method embodiments.

[0184] Optionally, the transceiver module 1001 can include a sending module and a receiving module. The sending module is configured to perform the sending operations in the above method embodiments. The receiving module is configured to perform the receiving operations in the above method embodiments.

[0185] It should be noted that the communication apparatus 1000 can include a sending module and not include a receiving module. Alternatively, the communication apparatus 1000 can include a receiving module and not include a sending module. Specifically, whether the communication apparatus 1000 includes a sending action and a receiving action can be determined according to the above scheme executed by the communication apparatus 1000. For example, the communication apparatus 1000 is configured to perform the actions of the network device in the above embodiment shown in FIG. 6. For details, please refer to the related description in the above embodiment shown in FIG. 6, which will not be described here in detail. For example, the communication apparatus 1000 is configured to perform the following scheme:

[0186] The transceiver module 1001 is configured to send first information, the first information being used to indicate a first packet, the first packet including at least two carriers, and the first packet corresponding to a first HARQ entity.

[0187] For another example, the communication apparatus 1000 is configured to perform the following scheme:

[0188] The transceiver module 1001 is configured to send second information to a terminal device, the second information being used to schedule at least one carrier in the first packet, and the at least one carrier corresponding to the first HARQ entity.

[0189] For other implementations, please refer to the related description in the above embodiment shown in FIG. 6.

[0190] It should be understood that the specific processes of each module performing the above corresponding processes have been described in detail in the above method embodiments, and will not be described here in detail for the sake of brevity.

[0191] The processing module 1002 in the above embodiment can be implemented by at least one processor or processor-related circuit. The transceiver module 1001 can be implemented by a transceiver or transceiver-related circuit. The transceiver module 1001 can also be referred to as a communication module or a communication interface. The storage module can be implemented by at least one memory.

[0192] The embodiment of the present application further provides a communication device 1100. Referring to FIG. 10, the communication device 1100 comprises a processor 1110 and a memory 1120. The memory 1120 is configured to store computer programs or instructions and / or data. The processor 1110 is configured to execute the computer programs or instructions and / or data stored in the memory 1120, so that the method in the above method embodiment is executed. The communication device 1100 is configured to implement the operation performed by the terminal device or the network device in the above method embodiment.

[0193] Optionally, the processor 1110 comprised in the communication device 1100 is one or more.

[0194] Optionally, as shown in FIG. 10, the communication device 1100 can further comprise the memory 1120.

[0195] Optionally, the memory 1120 comprised in the communication device 1100 can be one or more.

[0196] Optionally, the memory 1120 can be integrated with the processor 1110 or separately arranged.

[0197] Optionally, as shown in FIG. 10, the communication device 1100 can further comprise a transceiver 1130 configured to receive and / or send signals. For example, the processor 1110 is configured to control the transceiver 1130 to receive and / or send signals.

[0198] The present application further provides a communication device 1200, which can be a terminal device, a processor in a terminal device, or a chip. The communication device 1200 can be configured to execute the operation performed by the terminal device in the above method embodiment.

[0199] When the communication device 1200 is a terminal device, FIG. 11 shows a structural schematic diagram of a terminal device. As shown in FIG. 11, the terminal device comprises a processor, a memory, and a transceiver. The memory can store computer program codes. The transceiver comprises a transmitter 1231, a receiver 1232, a radio frequency circuit (not shown in the figure), an antenna 1233, and an input / output device (not shown in the figure).

[0200] The processor is mainly configured to process communication protocols and communication data, control the terminal device, execute software programs and process data of the software programs, and the like.

[0201] The memory is mainly configured to store software programs and data.

[0202] The radio frequency circuit is mainly configured to convert baseband signals and radio frequency signals and process radio frequency signals.

[0203] The antenna is mainly used for transmitting and receiving radio frequency signals in the form of electromagnetic waves.

[0204] The input and output device can include a touch screen, a display screen, a keyboard, or the like. The input and output device is mainly used for receiving data input by a user and outputting data to the user. It should be noted that some types of terminal devices can not have an input and output device.

[0205] When data needs to be transmitted, the processor performs baseband processing on the data to be transmitted, and outputs the baseband signal to the radio frequency circuit. Then, the radio frequency circuit performs radio frequency processing on the baseband signal, and transmits the radio frequency signal in the form of electromagnetic waves through the antenna. When data is transmitted to the terminal device, the radio frequency circuit receives the radio frequency signal through the antenna. The radio frequency circuit converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor. The processor converts the baseband signal into data and processes the data. For ease of illustration, only one memory, one processor, and one transceiver are shown in FIG. 11. In actual terminal device products, there can be one or more processors and one or more memories. The memory can also be referred to as a storage medium or a storage device, etc. The memory can be independent of the processor, or can be integrated with the processor, and the embodiments of the present application do not limit this.

[0206] In the embodiments of the present application, the antenna and the radio frequency circuit having the transceiving function can be regarded as a transceiving module of the terminal device, and the processor having the processing function can be regarded as a processing module of the terminal device.

[0207] As shown in FIG. 11, the terminal device includes a processor 1210, a memory 1220, and a transceiver 1230. The processor 1210 can also be referred to as a processing unit, a processing board, a processing module, or a processing device, etc. The transceiver 1230 can also be referred to as a transceiving unit, a transceiver, or a transceiving device, etc.

[0208] Optionally, the devices in the transceiver 1230 for implementing the receiving function are regarded as a receiving module, and the devices in the transceiver 1230 for implementing the transmitting function are regarded as a transmitting module, that is, the transceiver 1230 includes a receiver and / or a transmitter. The transceiver can also be referred to as a transceiver, a transceiving module, or a transceiving circuit, etc. The receiver can also be referred to as a receiver, a receiving module, or a receiving circuit, etc. The transmitter can also be referred to as a transmitter, a transmitting module, or a transmitting circuit, etc.

[0209] The processor 1210 is configured to perform the processing actions of the terminal device side in the embodiments shown in FIG. 6. The transceiver 1230 is configured to perform the transceiving actions of the terminal device side in the embodiments shown in FIG. 6.

[0210] It should be understood that FIG. 11 is only an example and not a limitation, and the above terminal device including the transceiving module and the processing module can not depend on the structure shown in FIG. 8 or FIG. 11.

[0211] When the communication apparatus 1200 is a chip, the chip includes a processor, a memory and a transceiver. The transceiver can be an input output circuit or a communication interface. The processor can be an integrated processing module on the chip or a microprocessor or an integrated circuit. The sending operation of the terminal device in the method embodiments can be understood as the output of the chip, and the receiving operation of the terminal device in the method embodiments can be understood as the input of the chip.

[0212] The application further provides a communication apparatus 1300, which can be an access network device or a chip. The communication apparatus 1300 can be used to perform the operations performed by the network device in the embodiment shown in FIG. 6.

[0213] When the communication apparatus 1300 is a network device, for example, a base station. FIG. 12 shows a simplified structure diagram of a base station. The base station includes a 1310 part, a 1320 part and a 1330 part.

[0214] The 1310 part is mainly used for baseband processing, controlling the base station and the like; the 1310 part is usually the control center of the base station, which can be usually referred to as a processor, and is used to control the base station to perform the processing operations of the network device side in the method embodiments.

[0215] The 1320 part is mainly used for storing computer program codes and data.

[0216] The 1330 part is mainly used for transceiving radio frequency signals and converting radio frequency signals and baseband signals; the 1330 part can be usually referred to as a transceiving module, a transceiver, a transceiving circuit or a transceiver and the like. The transceiving module of the 1330 part can also be referred to as a transceiver or a transceiver and the like, which includes an antenna 1333 and a radio frequency circuit (not shown in the figure), wherein the radio frequency circuit is mainly used for radio frequency processing. Optionally, the devices for realizing the receiving function in the 1330 part can be regarded as a receiver, and the devices for realizing the sending function can be regarded as a transmitter, that is, the 1330 part includes a receiver 1332 and a transmitter 1331. The receiver can also be referred to as a receiving module, a receiver or a receiving circuit and the like, and the transmitter can be referred to as a transmitting module, a transmitter or a transmitting circuit and the like.

[0217] The 1310 part and the 1320 part can include one or more single boards, and each single board can include one or more processors and one or more memories. The processor is used to read and execute the program in the memory to realize the baseband processing function and the control of the base station. If there are multiple single boards, the single boards can be interconnected to enhance the processing capability. As an optional implementation, the multiple single boards can share one or more processors, or the multiple single boards can share one or more memories, or the multiple single boards can share one or more processors at the same time.

[0218] For example, in one implementation, the transceiver module of the 1330 portion is configured to perform transceiving-related procedures performed by the network device in the embodiments shown in FIG. 6. The processor of the 1310 portion is configured to perform processing-related procedures performed by the network device in the embodiments shown in FIG. 6.

[0219] It should be understood that FIG. 12 is merely an example and not limiting, and the network device described above including the processor, the memory, and the transceiver can not depend on the structure shown in FIG. 9 or FIG. 12.

[0220] When the communication apparatus 1300 is a chip, the chip includes a processor, where the processor can be a processor integrated on the chip, or a microprocessor, or an integrated circuit. Optionally, the communication apparatus 1300 can further include a transceiver, where the transceiver can be an input / output circuit, a communication interface. Further optionally, the communication apparatus 1300 can further include a memory, where the memory can be built-in the chip or an external memory. The transmitting operation of the network device in the method embodiments described above can be understood as the output of the chip, and the receiving operation of the network device in the method embodiments described above can be understood as the input of the chip.

[0221] The present application further provides a computer readable storage medium, having stored thereon computer instructions for implementing the method performed by the terminal device or the network device in the method embodiments described above.

[0222] For example, the computer program is executed by a computer, so that the computer can implement the method performed by the terminal device or the network device in the method embodiments described above.

[0223] The present application further provides a computer program product including instructions, which are executed by a computer to make the computer implement the method performed by the terminal device or the network device in the method embodiments described above.

[0224] The present application further provides a communication system including a terminal device and a network device. The terminal device is configured to perform part or all of the operations performed by the terminal device in the embodiments shown in FIG. 6, and the network device is configured to perform part or all of the operations performed by the network device in the embodiments shown in FIG. 6.

[0225] The present application further provides a chip device including a processor, which is configured to invoke computer degrees or computer instructions stored in the memory to make the processor perform the method provided in the embodiments shown in FIG. 6.

[0226] In one possible implementation, the input of the chip device corresponds to the receiving operation in any one of the embodiments shown in FIG. 6, and the output of the chip device corresponds to the transmitting operation in any one of the embodiments shown in FIG. 6.

[0227] Optionally, the processor is coupled to the memory through an interface.

[0228] Optionally, the chip device further comprises a memory, and the memory stores computer degree or computer instruction.

[0229] Any of the processors mentioned above can be a general central processing unit, a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the method provided by any of the embodiments shown in Figure 6. Any of the memories mentioned above can be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM), and the like.

[0230] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the explanation and beneficial effects of the related content in any of the above-mentioned devices can refer to the corresponding method embodiments provided above, which will not be repeated here.

[0231] In several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented in other ways. For example, the above-described device embodiments are only schematic, for example, the division of the units is only a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some interface, device or unit, and can be electrical, mechanical or other forms.

[0232] The units described as separate components can or can not be physically separated, and the components shown as units can or can not be physical units, that is, they can be located in one place, or can be distributed on a plurality of network units. According to actual needs, part or all of the units can be selected to achieve the purpose of the embodiment scheme.

[0233] In addition, each functional unit in each embodiment of the present application can be integrated in one processing unit, or each unit can exist physically, or two or more units can be integrated in one unit. The above integrated unit can be realized in the form of hardware or in the form of software functional unit.

[0234] The integrated unit, if implemented in the form of a software function unit and sold or used as an independent product, can be stored in a computer readable storage medium. Based on such understanding, the part of the technical solutions of the present application that essentially makes contributions or the whole or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes various media that can store program codes, such as a U disk, a mobile hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

[0235] The above-described embodiments are merely used to illustrate the technical solutions of the present application, rather than limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A communication method characterized by comprising: The method comprises: sending first information, the first information being used for indicating a first group, the first group comprising at least two carriers, the first group corresponding to a first hybrid automatic repeat request (HARQ) entity; sending second information, the second information being used for scheduling at least one carrier in the first group, the at least one carrier corresponding to the first HARQ entity.

2. The method of claim 1, wherein, The at least one carrier corresponds to a first HARQ process, and the first HARQ entity comprises the first HARQ process.

3. The method according to claim 1 or 2, characterized in that, The at least one carrier comprises a first carrier, and the first carrier is used for transmitting a first physical downlink shared channel (PDSCH); The second information comprises first indication information, and the first indication information is used for indicating a HARQ entity corresponding to the first carrier in a case of performing the first PDSCH retransmission.

4. The method of claim 3, wherein, The HARQ entity corresponding to the first carrier is a second HARQ entity, and the first indication information is used for indicating a second HARQ process in the second HARQ entity corresponding to the first carrier. Or, the HARQ entity corresponding to the first carrier is the first HARQ entity, and the first indication information is used for indicating a third HARQ process in the first HARQ entity corresponding to the first carrier.

5. The method according to any one of claims 1-4, characterized in that, The second information is used for scheduling multiple carriers in the first group, and the method further comprises: sending third information, the third information being used for scheduling a second carrier, the second carrier corresponding to a third HARQ entity, and the third HARQ entity comprising a HARQ process corresponding to the second carrier.

6. A communication method characterized by comprising: The method comprises: receiving first information, the first information being used for indicating a first group, the first group comprising at least two carriers, the first group corresponding to a first hybrid automatic repeat request (HARQ) entity; receiving second information, the second information being used for scheduling at least one carrier in the first group, the at least one carrier corresponding to the first HARQ entity.

7. The method of claim 6, wherein, The at least one carrier corresponds to a first HARQ process, and the first HARQ entity comprises the first HARQ process.

8. The method according to claim 6 or 7, characterized in that, The at least one carrier comprises a first carrier, and the first carrier is used for transmitting a first physical downlink shared channel (PDSCH); The second information comprises first indication information, and the first indication information is used for indicating a HARQ entity corresponding to the first carrier in a case of performing the first PDSCH retransmission.

9. The method of claim 8, wherein The HARQ entity corresponding to the first carrier is a second HARQ entity, and the first indication information is used for indicating a second HARQ process in the second HARQ entity corresponding to the first carrier. Or, the HARQ entity corresponding to the first carrier is the first HARQ entity, and the first indication information is used for indicating a third HARQ process in the first HARQ entity corresponding to the first carrier.

10. The method according to any one of claims 6-9, characterized in that, The second information is used for scheduling multiple carriers in the first group, and the method further comprises: receive third information, the third information being used for scheduling a second carrier, the second carrier corresponding to a third HARQ entity, the third HARQ entity including a HARQ process corresponding to the second carrier.

11. The method of claim 2 or 7, wherein, The second information includes second indication information and / or third indication information, the second indication information being used for indicating the at least one carrier, the third indication information being used for indicating the first HARQ process.

12. The method of claim 2 or 7, wherein, When the first HARQ process is occupied, a carrier in the first packet which is not called does not use the first HARQ process.

13. The method of claim 2 or 7, wherein, The PDSCH transmitted by the at least one carrier corresponds to the first HARQ process.

14. The method of any one of claims 1-13, wherein, The second information is downlink control information (DCI).

15. A communications device, characterized by An apparatus comprising a processor and an interface circuit for receiving signals from other communication devices and transmitting signals to the processor or sending signals from the processor to other communication devices, the processor being configured by logic circuitry or executing code instructions to cause the communication device to perform the method of any one of claims 1 to 14.

16. A readable storage medium, characterized by, A computer program product for storing computer programs or instructions which are executed by one or more processors to cause an apparatus comprising the one or more processors to perform the method of any one of claims 1 to 14.

17. A computer program product, characterised in that, A computer program product for storing computer programs or instructions which are executed by one or more processors to cause an apparatus comprising the one or more processors to perform the method of any one of claims 1 to 14. When the computer program product is run on an electronic device, the electronic device is caused to perform the method of any one of claims 1 to 14.

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