WO2021179887A1

WO2021179887A1 - Communication method and apparatus

Info

Publication number: WO2021179887A1
Application number: PCT/CN2021/076814
Authority: WO
Inventors: 卓义斌; 刘菁; 戴明增; 朱元萍
Original assignee: 华为技术有限公司
Priority date: 2020-03-10
Filing date: 2021-02-19
Publication date: 2021-09-16
Also published as: CN113381841A

Abstract

The present application relates to the technical field of communications, and disclosed are a communication method and apparatus, used for aligning the encoding capability of an encoding end with the decoding capability of an decoding end, so as to avoid the problem that the decoding end cannot decode data sent by the encoding end. The method comprises: a network device receives a decoding capability from a decoding device, the decoding capability comprising a maximum sub-block size supported by the decoding device; and the network device sends the decoding capability to an encoding device corresponding to the decoding device.

Description

Communication method and device

Cross-references to related applications

This application claims the priority of a Chinese patent application filed with the Intellectual Property Office of the People’s Republic of China, the application number is 202010163330.8, and the application name is "a communication method and device" on March 10, 2020. The entire content is incorporated herein by reference. Applying.

Technical field

The embodiments of the present application relate to the field of communication technologies, and in particular, to a communication method and device.

Background technique

Network coding is a data exchange technology that combines routing and coding. By encoding and sending data at the encoding end, and receiving and decoding data at the decoding end, the efficiency and accuracy of data transmission between devices (network elements) can be effectively improved. However, in networks such as integrated access and backhaul (IAB), there are differences in the performance of different devices, which are limited by the performance limitations of different devices, such as working memory (working memory) and other factors. Limitation, there is a problem that the decoding end cannot decode the data sent by the encoding end. Therefore, it is necessary to align the encoding capability of the encoding end with the decoding capability of the decoding end.

Summary of the invention

The embodiments of the present application provide a communication method and device for aligning the encoding capability of the encoding end with the decoding capability of the decoding end, so as to avoid the problem that the decoding end cannot decode the data sent by the encoding end.

In a first aspect, an embodiment of the present application provides a communication method. The method includes: a network device receives a decoding capability from a decoding device, where the decoding capability includes the maximum sub-block size supported by the decoding device; The encoding device corresponding to the decoding device sends the decoding capability.

In the embodiments of the present application, the described communication method may be implemented by a network device, or may be implemented by a component of the network device, such as a processing chip, a circuit, and other components in the network device. The network equipment, encoding equipment, and decoding equipment involved in possible implementations may have the following possible situations: the network equipment is a centralized unit (CU) hosted by the IAB, and the decoding equipment is a mobile terminal (mobile terminal) of the IAB node. , MT), the encoding device is a distributed unit (DU) hosted by the IAB; or, the network device is a CU hosted by the IAB, the decoding device is a DU hosted by the IAB, and the encoding device is an MT with an IAB node; or, the network device Is the base station, the decoding device is the second UE, and the encoding device is the first UE. Using the above method, through the information interaction between the network device and the encoding device and the decoding device, the encoding capability of the encoding device (encoding end) can be aligned with the decoding capability of the decoding device (decoding end), and the encoding device can be based on the decoding capability of the encoding device ( The maximum supported sub-block size) is used for encoding, which can ensure the normal decoding of the data sent by the encoding device by the decoding device.

In a possible design, before the network device sends the decoding capability to the encoding device corresponding to the decoding device, the method further includes: the network device receives a decoding capability request from the encoding device. In the above design, the network device can send the decoding capability of the decoding device corresponding to the encoding device to the encoding device after receiving the decoding capability request of the decoding device from the encoding device, so as to ensure the decoding capability of the encoding device to the decoding device. Accurate knowledge is beneficial to achieve alignment between the encoding capability of the encoding device and the decoding capability of the decoding device.

In a possible design, the decoding capability request includes identification information of the decoding device. In the above design, the decoding capability request includes the identification information of the decoding device, which facilitates the network device to accurately determine the decoding device corresponding to the encoding device, and facilitates the network device to obtain the decoding capability of the decoding device corresponding to the encoding device.

In a possible design, before the network device receives the decoding capability from the decoding device, the method further includes: the network device sends a decoding capability report request to the decoding device. In the above design, the network device can actively request the decoding device to report the decoding capability by sending a decoding capability report request, so as to facilitate the alignment of the encoding capability of the encoding device with the decoding capability of the decoding device through the network device.

In a possible design, the decoding capability further includes information about whether to support network coding and/or the type of network coding supported. In the above design, it is beneficial for the encoding device to determine whether to use network encoding and the type of network encoding based on the information of whether the decoding device supports network encoding and/or the type of network encoding supported, so as to ensure that the decoding device can accurately obtain the data sent by the encoding device .

In a second aspect, an embodiment of the present application provides a communication method, the method includes: an encoding device receives a decoding capability from a decoding device, where the decoding capability includes the maximum sub-block size supported by the decoding device.

In the embodiments of the present application, the described communication method may be implemented by an encoding device, or may be implemented by a component of the encoding device, such as a processing chip, a circuit, and other components in the encoding device. The encoding device and decoding device involved in the possible implementation may have the following possible situations: the encoding device is the CU hosted by the IAB and the decoding device is the IAB node; or the encoding device is the IAB node and the decoding device is the CU hosted by the IAB; Or, the encoding device is the DU hosted by the IAB, and the decoding device is the MT of the IAB node; or, the encoding device is the MT of the IAB node, and the decoding device is the DU hosted by the IAB; or, the encoding device is the first UE, and the decoding device is the second UE. UE. Using the above method, through the information exchange between the encoding device and the decoding device, the encoding capability of the encoding device (encoding end) is aligned with the decoding capability of the decoding device (decoding end). The decoding device can be based on the decoding capability of the encoding device (supported Maximum sub-block size) for encoding, which can ensure the normal decoding of the data sent by the encoding device by the decoding device.

In a possible design, before the encoding device receives the decoding capability from the decoding device, the method further includes: the encoding device sends a decoding capability report request to the decoding device. In the above design, the encoding device can send a decoding capability report request to the decoding device before performing network encoding to actively obtain the decoding capability of the decoding device, which ensures that the encoding device has accurate knowledge of the decoding capability of the decoding device, which is conducive to the realization of the encoding capability of the encoding device Align with the decoding capability of the decoding device.

In a third aspect, an embodiment of the present application provides a communication method, the method includes: a decoding device sends a decoding capability to a network device, where the decoding capability includes the maximum sub-block size supported by the decoding device.

In the embodiments of the present application, the described communication method can be implemented by a decoding device, or can be implemented by components of the decoding device, for example, by a processing chip, a circuit and other components in the decoding device. The network equipment and decoding equipment involved in the possible implementation can have the following possible situations: the network equipment is the CU hosted by the IAB, and the decoding equipment is the MT of the IAB node; or the network equipment is the CU hosted by the IAB, and the decoding device is the IAB The host DU; or, the network device is a base station, and the decoding device is the second UE. Using the above method, the decoding device can report its own decoding capability to the network device, so that the network device can accurately learn the decoding capability of the decoding device, so that the network device can interact with the encoding device with the decoding capability of the decoding device, which is conducive to the realization of the encoding capability of the encoding device Align with the decoding capability of the decoding device, the encoding device can perform encoding according to the decoding capability (the maximum supported sub-block size) of the encoding device, which can ensure that the decoding device decodes the data sent by the encoding device normally.

In a possible design, before the decoding device sends the decoding capability to the network device, the method further includes: the decoding device receives a decoding capability report request from the network device. In the above design, the network device can actively request the decoding device to report the decoding capability by sending a decoding capability report request, which facilitates the alignment of the encoding capability of the encoding device with the decoding capability of the decoding device through the network device.

In a fourth aspect, an embodiment of the present application provides a communication method, the method includes: an encoding device receives a decoding capability of a decoding device corresponding to the encoding device sent by a network device, and the decoding capability includes the maximum value supported by the decoding device. The size of the sub-block. In the embodiments of the present application, the described communication method may be implemented by an encoding device, or may be implemented by a component of the encoding device, such as a processing chip, a circuit, and other components in the encoding device. The network equipment, encoding equipment, and decoding equipment involved in the possible implementation can have the following possible situations: the network equipment is the CU hosted by the IAB, the decoding equipment is the MT of the IAB node, and the encoding device is the DU hosted by the IAB; or, the network The device is the CU of the IAB host, the decoding device is the DU of the IAB host, and the encoding device is the MT of the IAB node; or, the network device is the base station, the decoding device is the second UE, and the encoding device is the first UE. Using the above method, through the information interaction between the network device and the encoding device and the decoding device, the encoding capability of the encoding device (encoding end) is aligned with the decoding capability of the decoding device (decoding end). The encoding device can be based on the decoding capability of the encoding device (support The maximum sub-block size of the encoding device can be used for encoding, which can ensure the normal decoding of the data sent by the encoding device by the decoding device.

In a possible design, before the encoding device receives the decoding capability of the decoding device corresponding to the encoding device sent by the network device, the method further includes: the encoding device sends a decoding capability request to the network device . In the above design, the network device can send the decoding capability request of the decoding device corresponding to the encoding device to the encoding device after receiving the decoding capability request of the decoding device from the encoding device, so as to ensure the decoding capability of the encoding device to the decoding device. Accurate knowledge is beneficial to achieve alignment between the encoding capability of the encoding device and the decoding capability of the decoding device.

In a possible design, the decoding capability request includes identification information of the decoding device. In the above design, the decoding capability request includes the identification information of the decoding device, which helps the network device accurately determine the decoding device corresponding to the encoding device, and facilitates the network device to obtain the decoding capability of the decoding device corresponding to the encoding device.

In a fifth aspect, an embodiment of the present application provides a communication method. The method includes: a decoding device sends a decoding capability to an encoding device, where the decoding capability includes the maximum sub-block size supported by the decoding device.

In the embodiments of the present application, the described communication method can be implemented by a decoding device, or can be implemented by components of the decoding device, for example, by a processing chip, a circuit and other components in the decoding device. The network equipment, encoding equipment, and decoding equipment involved in the possible implementations can have the following possible situations: the encoding equipment is the CU of the IAB host, the decoding equipment is the IAB node; or the encoding equipment is the IAB node, and the decoding equipment is the IAB host CU; or, the encoding device is the DU hosted by the IAB, and the decoding device is the MT of the IAB node; or, the encoding device is the MT of the IAB node, and the decoding device is the DU hosted by the IAB; or, the encoding device is the first UE, the decoding device It is the second UE. Using the above method, through the information exchange between the encoding device and the decoding device, the encoding capability of the encoding device (encoding end) is aligned with the decoding capability of the decoding device (decoding end). The decoding device can be based on the decoding capability of the encoding device (supported Maximum sub-block size) for encoding, which can ensure the normal decoding of the data sent by the encoding device by the decoding device.

In a possible design, before the decoding device sends the decoding capability to the encoding device, the method further includes: the decoding device receives a decoding capability report request from the encoding device. In the above design, the encoding device can send a decoding capability report request to the decoding device before performing network encoding to actively obtain the decoding capability of the decoding device, which ensures that the encoding device has accurate knowledge of the decoding capability of the decoding device, which is conducive to the realization of the encoding capability of the encoding device Align with the decoding capability of the decoding device.

In a sixth aspect, an embodiment of the present application provides a communication device that has the function of implementing the first aspect or any one of the possible design methods in the first aspect. The function can be implemented by hardware or by hardware. Execute the corresponding software implementation. The hardware or software includes one or more units (modules) corresponding to the above-mentioned functions, such as a transceiver unit and a processing unit.

In one possible design, the device can be a chip or an integrated circuit.

In a possible design, the device includes a processor, the processor is coupled to a memory, and the memory is used to store a program executed by the processor. When the program is executed by the processor, the device can execute the first aspect or The function of the method described in any of the possible designs of the first aspect.

In one possible design, the device may be a network device.

In a seventh aspect, an embodiment of the present application provides a communication device that has the function of implementing any of the foregoing second aspect or the second aspect of the possible design method, or has the capability of implementing the foregoing fourth aspect or the fourth aspect The function of any possible design method can be realized by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units (modules) corresponding to the above-mentioned functions, such as a transceiver unit and a processing unit.

In one possible design, the device can be a chip or an integrated circuit.

In a possible design, the device includes a processor, which is coupled to a memory, and the memory is used to store a program executed by the processor. When the program is executed by the processor, the device can execute the second aspect or The function of the method described in any possible design of the second aspect, or the function of the method described in the fourth aspect or any of the possible designs of the fourth aspect can be performed.

In one possible design, the device may be an encoding device.

In an eighth aspect, an embodiment of the present application provides a communication device that has the function of implementing any of the foregoing third aspect or any of the possible design methods in the third aspect, or has the capability of implementing the foregoing fifth aspect or the fifth aspect The function of any possible design method can be realized by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units (modules) corresponding to the above-mentioned functions, such as a transceiver unit and a processing unit.

In one possible design, the device can be a chip or an integrated circuit.

In a possible design, the device includes a memory and a processor, and the memory is used to store a program executed by the processor. When the program is executed by the processor, the device can execute any of the foregoing third aspect or the third aspect. The function of the method described in a possible design, or the function of the method in the above-mentioned fifth aspect or any one of the possible designs of the fifth aspect can be performed.

In one possible design, the device may be a decoding device.

In a ninth aspect, an embodiment of the present application provides a communication system. The communication system may include at least one of a network device, an encoding device, and a decoding device, wherein the network device may perform the first aspect or any one of the first aspects. The method described in the possible design, the decoding device can execute the method described in the third aspect or any one of the possible designs of the third aspect, and the encoding device can execute any one of the fourth aspect or the fourth aspect. Possible design methods described in.

In a tenth aspect, an embodiment of the present application provides a communication system. The communication system may include an encoding device and a decoding device, where the encoding device may perform the above-mentioned second aspect or any one of the possible designs of the second aspect. Method, the decoding device can execute the method described in the fifth aspect or any one of the possible designs of the fifth aspect.

In an eleventh aspect, an embodiment of the present application provides a computer-readable storage medium, the computer-readable storage medium is configured to execute the method described in the first aspect or any one of the possible designs of the first aspect, Or execute the method described in the above second aspect or any one of the possible designs of the second aspect, or execute the method described in the above third aspect or any one of the possible designs of the third aspect, or execute the above first The method described in the fourth aspect or any one of the possible designs of the fourth aspect, or an instruction to execute the method described in the foregoing fifth aspect or any one of the possible designs of the fifth aspect.

In the twelfth aspect, the embodiments of the present application also provide a computer program product, including a computer program or instruction. When the computer program or instruction is executed, it can realize the first aspect or any of the possibilities of the first aspect. The method described in the design, or the method described in any possible design of the second aspect or the second aspect, or the method described in any possible design of the third aspect or the third aspect Or implement the method described in any possible design of the foregoing fourth aspect or the fourth aspect, or implement the method described in any possible design of the foregoing fifth aspect or the fifth aspect.

In a thirteenth aspect, this application also provides a chip, which is used to implement the method described in the first aspect or any one of the possible designs of the first aspect, or to implement the second aspect or the second aspect. The method described in any one of the possible designs, or the method described in the third aspect or any one of the possible designs of the third aspect is implemented, or any one of the fourth aspect or the fourth aspect is implemented The method described in the possible design, or the method described in the fifth aspect or any one of the possible designs of the fifth aspect.

Please refer to the technical effects that can be achieved from the first to fifth aspects above for the technical effects that can be achieved in the above-mentioned sixth to thirteenth aspects, which will not be repeated here.

Description of the drawings

FIG. 1 is a schematic diagram of a communication architecture provided by an embodiment of the application;

Figure 2 is a schematic diagram of a wireless relay provided by an embodiment of the application;

3A and 3B are schematic diagrams of the structure of a protocol stack provided by an embodiment of the application;

4 is a schematic diagram of data object cutting provided by an embodiment of the application;

5A and 5B are schematic diagrams of network coding information provided by an embodiment of this application;

FIG. 6 is one of the schematic diagrams of the communication process provided by the embodiment of this application;

FIG. 7 is the second schematic diagram of the communication process provided by the embodiment of this application;

FIG. 8 is the third schematic diagram of the communication process provided by the embodiment of this application;

FIG. 9 is the fourth schematic diagram of the communication process provided by the embodiment of this application;

FIG. 10 is the fifth schematic diagram of the communication process provided by the embodiment of this application;

FIG. 11 is a sixth schematic diagram of a communication process provided by an embodiment of this application;

FIG. 12 is one of the schematic block diagrams of a communication device provided by an embodiment of this application;

FIG. 13 is a schematic block diagram of a network device provided by an embodiment of this application;

FIG. 14 is a second schematic block diagram of a communication device provided by an embodiment of this application;

FIG. 15 is a schematic block diagram of an encoding device provided by an embodiment of this application;

FIG. 16 is the third schematic block diagram of a communication device provided by an embodiment of this application;

FIG. 17 is a schematic block diagram of a decoding device provided by an embodiment of the application.

Detailed ways

The technical solutions of the embodiments of this application can be applied to various communication systems, for example: can be applied to long term evolution (LTE) systems, advanced long term evolution (LTE-A) systems, and fifth generation (5th generation, 5G) and other communication systems can also be applied to wireless fidelity (WiFi), worldwide interoperability for microwave access (wimax), or future communication systems, such as future The 6th generation (6G) system, etc. Among them, 5G can also be called new radio (NR). Specifically, the technical solutions of the embodiments of the present application can be applied to IAB or device-to-device (D2D) or car wireless communication technology ( vehicle to X, V2X) and other application scenarios.

The communication system architecture applied by the embodiments of this application may be as shown in Figure 1, including: IAB donor (IAB donor), IAB node (IAB node) and at least one terminal device (such as terminal device 1 and terminal device 2 in Figure 1) ), can also include core network equipment. There may be one or more IAB hosts, IAB nodes, terminal devices, and core network devices in the communication system, which are not limited in the embodiment of the present application. The terminal device can be connected to the IAB node wirelessly, and can be connected to the IAB host through one or more IAB nodes (of course, the terminal device can also be directly connected to the IAB host wirelessly), the IAB host can be wirelessly or wired Ways to connect with core network equipment. In addition, it can be understood that the core network device and the IAB host can be separate and different physical devices, or the core network device function and the logical function of the IAB host can be integrated on the same physical device, or it can be a physical device. It integrates part of the core network equipment functions and part of the IAB host function. The wireless links between the aforementioned devices (network elements) can communicate through a licensed spectrum, or communicate through an unlicensed spectrum, or communicate through a licensed spectrum and an unlicensed spectrum at the same time. The wireless link between devices (network elements) can communicate through the frequency spectrum below 6 gigahertz (gigahertz, GHz), or through the frequency spectrum above 6 GHz, and can also use the frequency spectrum below 6 GHz and the spectrum above 6 GHz at the same time. Communication. The embodiment of the present application does not limit the spectrum resources used by the wireless link.

In the embodiments of the present application, an IAB node (IAB node) may also be referred to as a relay node (relay node, RN) or a wireless backhaul node/device. The IAB node may include at least one MT unit and at least one DU. In Fig. 1, only the IAB node includes an MT unit and a DU as an example for description. The MT unit in the IAB node implements the IAB as a terminal device to communicate with the parent node of the IAB node and the IAB host node, and has the function of user equipment (UE). The DU in the IAB node can provide access services for its attached terminal devices or other IAB nodes. Among them, the MT unit in the IAB node can also be referred to as the MT functional entity in the IAB node, and the DU in the IAB node can also be referred to as the DU functional entity in the IAB node. For ease of description, in the embodiments of the present application, the MT unit (MT functional entity) in the IAB node is referred to as "MT of the IAB node", and the DU (DU functional entity) in the IAB node is referred to as "DU of the IAB node". . The IAB node can provide a wireless access service for the terminal device, and the service data or control information of the terminal device is connected to the IAB host or network device through the wireless backhaul link by the IAB node for transmission.

The IAB donor (IAB donor) can also be called a wireless access network device. It can be an access network element with a complete base station function, or it can be a centralized unit (CU) and a distributed unit. DU) Access network element in a separated form. The IAB host can connect to the core network (for example, connected to the 5G core network, 5GC) network element serving the terminal device, and provide the wireless backhaul function for the IAB node. For ease of presentation, in the embodiments of this application, the CU (CU functional entity) in the IAB host is referred to as the CU of the IAB host (also referred to as IAB-donor-CU), and the DU (DU functional entity) in the IAB host is referred to as IAB host DU (also known as IAB-donor-DU), where the CU of the IAB host may also have a separate control plane (CP) and user plane (UP), for example, an IAB host's CU The CU is composed of one CU-CP (also called IAB-donor-CU-CP) and multiple CU-UPs (also called IAB-donor-CU-UP), which is not limited in the embodiment of the application.

A terminal device may also be called a terminal (terminal), a user equipment (UE), a mobile station (mobile station, MS), a mobile terminal (mobile terminal, MT), and so on. Terminal devices can be mobile phones, tablets, computers with wireless transceiver functions, virtual reality (VR) terminal devices, augmented reality (AR) terminal devices, industrial control (industrial control) ), wireless terminals in self-driving (self-driving), wireless terminals in remote medical surgery, wireless terminals in smart grid (smart grid), transportation safety (transportation safety) Wireless terminals, wireless terminals in smart cities, wireless terminals in smart homes, and so on.

In addition, in the current 5G standard, considering the small coverage of the high frequency band, in order to ensure the coverage performance of the network, multi-hop networking may be adopted in the IAB network. Taking into account the requirements of service transmission reliability, IAB nodes can be made to support dual connectivity (DC) or multi-connectivity to deal with possible abnormal situations in the backhaul link, such as link failure or blockage (blockage) and load fluctuations and other abnormalities, improve the reliability of transmission.

The IAB network supports multi-hop and multi-connection networking, so there may be multiple transmission paths between the terminal device and the IAB donor (IAB donor). On a transmission path, it contains multiple nodes, such as terminal equipment, one or more IAB nodes (IAB nodes), and IAB hosts (if IAB donors are separated from CU and DU, they also include the IAB-donor-DU part , And the IAB-donor-CU part), each IAB node regards the neighboring node providing the backhaul service as the parent node, and accordingly, each IAB node can be regarded as the child node of its parent node.

Exemplarily, in Figure 2 the parent node of IAB node 1 is the IAB host, IAB node 1 is the parent node of IAB node 2 and IAB node 3, IAB node 2 and IAB node 3 are both the parent node of IAB node 4. The parent node of IAB node 5 is IAB node 2. The uplink data packet of the terminal device can be transmitted to the IAB host via one or more IAB nodes, and then sent from the IAB host to the mobile gateway device (for example, the user plane function unit UPF in the 5G core network), and the downlink data packet will be sent from the IAB host to the mobile gateway device. After being received by the mobile gateway device, it is sent to the terminal device through one or more IAB nodes. There are two available paths for data transmission between terminal device 1 and IAB host, path 1: terminal device 1←→IAB node 4←→IAB node 3←→IAB node 1←→IAB host, path 2: terminal device 1 ←→IAB node 4←→IAB node 2←→IAB node 1←→IAB host. There are three available paths for data transmission between terminal device 2 and IAB host, path 1: terminal device 2←→IAB node 4←→IAB node 3←→IAB node 1←→IAB host, path 2: terminal device 2← →IAB node 4←→IAB node 2←→IAB node 1←→IAB host, path 3: terminal device 2←→IAB node 5←→IAB node 2←→IAB node 1←→IAB host.

In addition, in the IAB network that combines multi-hop and multi-connection, there are more other possibilities. For example, the IAB host (IAB DgNB1) and the IAB node under another IAB host (IAB DgNB2) form a dual connection as a terminal device. Services, etc., are not listed one by one.

In the current discussion of the IAB network, it is determined to introduce a new protocol layer in the wireless backhaul link-the backhaul adaptation protocol (BAP) layer, which is located in the wireless link control layer protocol ( Above the radio link control (RLC) layer, it can be used to implement data packet routing on the wireless backhaul link, as well as bearer mapping and other functions.

Between the IAB node (or the DU of the IAB) and the IAB host (or the CU of the IAB host), an F1 interface (or F1* interface) needs to be established. Not limited), this interface supports user plane protocol (F1-U/F1*-U) and control plane protocol (F1-C/F1*-C). Among them, as shown in Fig. 3A, the user plane protocol includes one or more of the following protocol layers: general packet radio service (general packet radio service, GPRS) tunneling protocol user plane (GPRS tunnelling protocol user plane, GTP-U) layer, User datagram protocol (UDP) layer and Internet protocol (IP) and other protocol layers; as shown in Figure 3B, the control plane protocol of this interface includes one or more of the following: F1 application protocol (F1application protocol, F1AP) layer, stream control transport protocol (stream control transport protocol, SCTP) layer, IP layer, etc.

Through the control plane of the F1/F1* interface, the IAB node and the IAB host can perform interface management, manage IAB-DU, and perform terminal device context-related configuration. Through the user plane of the F1/F1* interface, the IAB node and the IAB host can perform user plane data transmission, as well as downlink transmission status feedback and other functions.

It is understandable that the network architecture and business scenarios described in the embodiments of this application are intended to more clearly illustrate the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided in the embodiments of this application. Those of ordinary skill in the art It can be seen that with the evolution of the network architecture and the emergence of other business scenarios, the technical solutions provided in the embodiments of the present application are equally applicable to similar technical problems.

The following describes the embodiments of the present application in detail in combination with the alignment of the encoding capability of the encoding end with the decoding capability of the decoding end in different scenarios, so as to prevent the decoding end from being unable to decode the data sent by the encoding end. It should be understood that, in order to facilitate the description of the technical solutions of the embodiments of the present application, in the embodiments of the present application, "/" may indicate that the associated objects before and after are in an "or" relationship, for example, A/B may indicate A or B; "And/or" can be used to describe the existence of three relationships among associated objects, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, and B exists alone, where A and B can be Is singular or plural. In order to facilitate the description of the technical solutions of the embodiments of the present application, in the embodiments of the present application, words such as "first" and "second" may be used to distinguish technical features with the same or similar functions. The words "first" and "second" do not limit the quantity and order of execution, and the words "first" and "second" do not limit the difference. In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or illustrations, and embodiments or design solutions described as "exemplary" or "for example" should not be interpreted as It is more preferable or advantageous than other embodiments or design solutions. The use of words such as "exemplary" or "for example" is intended to present related concepts in a specific manner to facilitate understanding.

The following first introduces and explains the concept of network coding.

Network coding, such as random linear network coding (RLNC), fountain codes, etc., work in roughly the same principle, that is, the sender sends encoded data packets to the receiver without waiting for feedback from the receiver, and the receiver is at After accumulating enough encoded packets, the original data can be decoded and restored.

Take the fountain code as an example, where the fountain code can be a Raptor code or a RaptorQ code. As shown in Figure 4, the fountain code needs to perform the following operations in sequence on a data object (object) at the encoding end, that is, the data that needs to be encoded:

1. Cut an object into K source symbols of equal size.

Exemplarily, the cutting process is specifically as follows:

(1) Cut an object into Z blocks: the size of each block may be different (the size of each block must be an integer multiple of the source symbol, for example, the size of the source symbol is 30 bytes (bytes) For example, in Figure 4, an object with a size of 1000 bytes is cut into 8 blocks, where the size of the first 2 blocks is 150 bytes (that is, it contains 5 source symbols), and the size of the last 6 blocks is 120 bytes (that is, it contains 4 Source symbol), where when the object is cut into Z blocks, if the size of the object does not satisfy an integer multiple of the source symbol, the object can be padded so that the size of the object satisfies an integer multiple of the source symbol. Example: object The size of is 1000bytes, which is not an integer multiple of the source symbol. You can complement the object to 1020bytes.

Among them, when cutting an object into Z blocks, the partition formula that can be used is: partition (I, J) = (A, B, C, D), A = ceil (I/J), B = floor(I/J), C=IJ*B, D=JC, where ceil means rounding up, for example, ceil(4.1)=5, floor means rounding down, for example floor(4.9)=4, where A is the first The size of a type of block, C is the number of the first type of block, B is the size of the second type of block, and D is the number of the second type of block.

Taking the size of the source symbol (T)=30bytes and the size of the object (F)=1000bytes as an example, the number of source symbols contained in the object (Kt)=ceil(F/T)=34, the object needs to be complemented, for example : You can use the set character (such as 0, etc.) to fill in the bit to make object = 1020bytes. Cut the object into 8 blocks, that is, Z=8. That is, 34 source symbols need to be cut into 8 blocks. That is, in the partition formula, I=Kt=34, J=Z=8, partition(34,8)=(5,4,2,6), that is, the number of blocks with a size of 5 source symbols (KL) ( ZL) is 2, and the number of (KS) blocks (ZS) with a size of 4 source symbols is 6.

(2) Then cut each block into N sub-blocks: the size of each sub-block may be different. For example, in Figure 4, a block of 150 bytes will be cut into 4 sub-blocks, the first 2 The sub-block is 40 bytes, and the last two sub-blocks are 35 bytes; the block with a length of 120 bytes is cut into 4 sub-blocks, the first two sub-blocks are 32 bytes, and the last two sub-blocks are 28 bytes.

For example, when the block is cut into N sub-blocks, the size of each sub-block can be determined according to the size T of the source symbol, the alignment parameter AI of the source symbol, the number of sub-blocks cut into N, and the above partition formula. That is, I=T/AI=30, J=N=4, partition(30,4)=(8,7,2,2) in the partition formula, that is, 2 sub-blocks with a size of 8 bytes, the size is 2 sub-blocks of 7bytes. The block of 150 is 5 times of the source symbol (K=5), and AI=1, 8*K*AI=40, 7*K*AI=35, then the block of 150 bytes is cut into 4 sub-blocks , The first two sub-blocks are 32 bytes, and the last two sub-blocks are 28 bytes, where the AI is a symbol (source symbol) alignment parameter.

(3) Take part of the data from the N sub-blocks in a block to form a source symbol: Take the first block as an example, the size is 150 bytes and contains 5 source symbols, and each sub-block also contains 5 sub-blocks. Symbol (sub-symbol), the information contained in the i-th symbol of the 5 source symbols is the sum of the i-th sub-symbol in each sub-block, where i=1, 2, 3, 4, 5. As shown in Fig. 4, the size of each source symbol is 30, and the first source symbol is formed by concatenating the first sub-symbol in 4 sub-blocks, 8+8+7+7=30.

2. Perform a series of fountain code encoding on K source symbols to generate an encoded data packet, and transmit it.

As shown in Figure 5A, each encoded data packet sent by the sender carries two pieces of information: the block number (source block number, SBN) corresponding to the encoded data packet, and the encoded symbol (symbol) corresponding to the encoded data packet. )serial number.

In addition, in order to ensure that the decoding end can decode correctly, the encoding end and the decoding end can align the following information, as shown in Figure 5B, including: Transfer Length (used to indicate the length of the object, in bytes), Z (Used to indicate the number of blocks contained in the object), N (used to indicate the number of sub-blocks contained in the block), AI (used to indicate symbol (source symbol) alignment parameters) and other parameters. In some specific scenarios, the encoding end directly sends the control information related to the above network encoding to the decoding end (and possibly other nodes to control the distribution), and then the encoding end unpacks the data packet based on this information, and restores it based on this information data pack. Network coding is mainly used for data transmission on the user plane, that is, in a multi-path scenario, if a link is blocked, the receiving end can recover the original data as long as it receives enough encoded data packets from the other path, thereby improving The reliability of data transmission reduces data transmission delay.

In the encoding process, the encoding end cuts an object into multiple blocks according to the above parameters, and then encodes multiple sub-blocks of each block. The size of the sub-block is controlled by the above parameters, but the decoding end is based on Each sub-block is decoded, and the decoding capability of the decoding end is limited by factors such as working memory. Therefore, each sub-block generated by the encoding end should control the decoding capability of the decoding end, that is to say The sub-block size cannot be too large, otherwise the decoder cannot complete the decoding. Therefore, in the embodiments of the present application, it is proposed to align the encoding capability of the encoding end with the decoding capability of the decoding end, which involves aligning the maximum sub-block size of the encoding end with the maximum sub-block size supported by the decoding section to avoid the encoding end. The generated sub-block exceeds the decoding capability of the decoder.

Scenario 1: When network coding is used for data transmission (uplink or downlink) in the IAB network scenario, the encoding capability of the encoder end is aligned with the decoding capability of the decoder end (unified coordination by the CU of the IAB host).

When network coding is used for uplink data transmission in an IAB network scenario (the encoding end is the MT of the IAB node, and the decoding end is the DU of the IAB host), as shown in FIG. 6, a schematic diagram of a communication process provided by an embodiment of this application. The process includes:

S601: The MT of the IAB node sends a decoding capability request to the CU of the IAB host, and the CU of the IAB host receives the decoding capability request.

In a possible implementation, the MT of the IAB node has established a connection or a pairing relationship with the DU of the IAB host, and the connection or pairing relationship between the MT of the IAB node and the DU of the IAB host is stored in the CU of the IAB host. The CU of the IAB host can determine the DU (decoding end) of the IAB host corresponding to the MT of the IAB node according to the MT (encoding end) of the IAB node that sends the decoding capability request. The decoding capability request sent by the MT of the IAB node may not Carry the identification information of the DU of the IAB host.

In another possible implementation, the MT of the IAB node has not established a connection with the DU of the IAB host, and there is no pairing relationship, and the CU of the IAB host cannot determine according to the MT (encoding end) of the IAB node that sends the decoding capability request The DU (decoding end) of the IAB host corresponding to the MT of the IAB node, and the decoding capability request sent by the MT of the IAB node may carry the identification information of the DU of the IAB host. Exemplarily, the identification information of the DU hosted by the IAB may be the BAP address or IP address of the DU hosted by the IAB. The BAP address or IP address of the DU hosted by the IAB, and the MT of the IAB node may be determined according to the destination BAP address or IP to be transmitted for each uplink data included in the uplink routing configuration.

S602: The CU of the IAB host sends a decoding capability report request to the DU of the IAB host, and the DU of the IAB host receives the decoding capability report request.

According to the connection or pairing relationship between the MT of the IAB node and the DU of the IAB host, the CU of the IAB host determines the DU (decoding end) of the IAB host corresponding to the MT (encoding end) of the IAB node that sends the decoding capability request, or according to After the identification information of the DU of the IAB host contained in the decoding capability request is determined, the DU (decoding end) of the IAB host corresponding to the MT (encoding end) of the IAB node that sends the decoding capability request is determined, and then the DU of the determined IAB host is sent Send a decoding capability report request to request the DU of the IAB host to report the decoding capability.

S603: The DU of the IAB host sends a decoding capability to the CU of the IAB host, and the CU of the IAB host receives the decoding capability.

Exemplarily, the decoding capability includes the maximum sub-block size supported by the DU of the IAB host.

In a possible implementation, the decoding capability may also include information about whether the DU of the IAB host supports network coding (such as supporting network coding or not supporting network coding) and/or the type of supporting network coding (such as supporting Raptor Code, RaptorQ code, linear block code, etc.). For example, the decoding capability may also include that the DU of the IAB host supports network coding and the type of network coding supported is Raptor code.

S604: The CU of the IAB host sends the decoding capability to the MT of the IAB node, and the MT of the IAB node receives the decoding capability.

After the MT (encoding end) of the IAB node receives the decoding capability of the IAB host's DU (decoding end), it can adjust the object size during network encoding according to the decoding capability of the IAB host's DU (the maximum supported sub-block size) One or more of, symbol size, number of blocks contained in object, number of sub-blocks contained in block, symbol alignment parameters, etc., so that the sub-block size when encoding the MT of the IAB node does not exceed the IAB host The maximum sub-block size supported by the DU.

Optionally, the MT of the IAB node can also determine whether to use network coding according to the information about whether the DU of the IAB host supports network coding (such as supporting network coding or not supporting network coding), and can also determine whether to use network coding according to the network coding supported by the DU of the IAB host The type of network coding is used to determine the type of network coding used in network coding.

In a possible implementation, the IAB host’s DU sending decoding capabilities to the IAB host’s CU may also occur during network access (for example, when the IAB host’s DU accesses the IAB host’s CU). For the CU sending (reporting) decoding capability of the IAB host, the above S603 can occur before S601, and there is no S602.

In another possible implementation, the process in which the CU of the IAB host requests a decoding capability report from the DU of the IAB host may also occur before the MT of the IAB node sends the decoding capability request to the CU of the IAB host. In this case, the above S602 And S603 can happen before S601.

In another possible implementation, the connection or pairing relationship between the MT of the IAB node and the DU of the IAB host is stored in the CU of the IAB host. If the DU of the IAB host sends (reports) to the CU of the IAB host when it enters the network Decoding capability, the CU of the IAB host can determine the MT (encoding end) of the IAB node corresponding to the DU (decoding end) of the IAB host according to the saved connection or pairing relationship between the MT of the IAB node and the DU of the IAB host, and directly The MT (encoding end) of the IAB node transmits the decoding capability of the DU (decoding end) of the IAB host, that is, the foregoing S601 and S602 may not be provided.

When network coding is used for downlink data transmission in an IAB network scenario (the encoding end is the DU of the IAB host and the decoding end is the MT of the IAB node), as shown in FIG. 7, a schematic diagram of a communication process provided by an embodiment of this application is shown. The process includes:

S701: The DU of the IAB host sends a decoding capability request to the CU of the IAB host, and the CU of the IAB host receives the decoding capability request.

In the embodiment of this application, when network coding is used for downlink transmission in an IAB network scenario and when network coding is used for uplink transmission in an IAB network scenario, the CU interaction process between the encoder and decoder and the IAB host is similar, except that The encoding end and the decoding end during the downlink transmission are opposite to the encoding end and the decoding end during the uplink transmission. For the repetition, please refer to the description of using network coding for uplink transmission in the IAB network scenario shown in FIG. 6.

In a possible implementation, if the connection or pairing relationship between the MT (decoding end) of the IAB node and the DU (encoding end) of the IAB host is stored in the CU of the IAB host, the decoding capability request sent by the DU of the IAB host The identification information of the MT of the IAB node may not be carried in it. In another possible implementation, if the connection or pairing relationship between the MT (decoding end) of the IAB node and the DU (encoding end) of the IAB host is not saved in the CU of the IAB host, the decoding sent by the DU of the IAB host The capability request carries the identification information of the MT of the IAB node, such as the BAP address or IP address of the MT of the IAB node. Exemplarily, the BAP address or IP address of the MT of the IAB node, and the DU of the IAB host may be determined according to the destination BAP address or IP to be transmitted for each downlink data contained in the downlink routing configuration.

S702: The CU of the IAB host sends a decoding capability report request to the MT of the IAB node, and the MT of the IAB node receives the decoding capability report request.

S703: The MT of the IAB node sends a decoding capability to the CU of the IAB host, and the CU of the IAB host receives the decoding capability.

Exemplarily, the decoding capability includes the maximum sub-block size supported by the MT of the IAB node.

In a possible implementation, the decoding capability may also include information about whether the MT of the IAB node supports network coding (such as supporting network coding or not supporting network coding) and/or the type of supporting network coding (such as supporting Raptor Code, RaptorQ code, linear block code, etc.).

S704: The CU of the IAB host sends the decoding capability to the DU of the IAB host, and the DU of the IAB host receives the decoding capability.

After the DU (encoding end) of the IAB host receives the decoding capability of the MT (decoding end) of the IAB node, it can adjust the decoding capability of the MT of the IAB node (the maximum sub-block size supported) when performing network encoding. One or more of length, symbol size, number of blocks contained in object, number of sub-blocks contained in block, symbol alignment parameters, etc., so that the sub-block size when encoding the DU of the IAB host does not exceed the IAB The maximum sub-block size supported by the MT of the node.

Optionally, the DU of the IAB host can also determine whether to use network coding according to the information (such as supporting network coding or not supporting network coding) supported by the MT of the IAB node, and can also determine whether to use network coding, and can also determine whether to use network coding according to the information supported by the MT of the IAB node. The type of network coding determines the type of network coding used when performing network coding.

In a possible implementation, the MT of the IAB node may send the decoding capability to the CU of the IAB host when it is connected to the network (for example, when the MT of the IAB node is connected to the CU of the IAB host), if the MT of the IAB node For the CU sending (reporting) decoding capability of the IAB host, the above S703 can occur before S701, and there is no S702.

In another possible implementation, the process in which the CU of the IAB host requests the MT of the IAB node to report the decoding capability may also occur before the DU of the IAB host sends the request of the decoding capability to the CU of the IAB host. In this case, the above S702 And S703 can happen before S701.

In another possible implementation, the connection or pairing relationship between the MT of the IAB node and the DU of the IAB host is stored in the CU of the IAB host. If the MT of the IAB node sends (reports) to the CU of the IAB host when it enters the network Decoding capability, the CU of the IAB host can determine the DU (encoding end) of the IAB host corresponding to the MT (decoding end) of the IAB node according to the saved connection or pairing relationship between the MT of the IAB node and the DU of the IAB host, and directly The DU (encoding end) of the IAB host transmits the decoding capability of the MT (decoding end) of the IAB node, that is, the foregoing S701 and S702 may be absent.

In scenario 1, the DU of the IAB host and the CU of the IAB host can exchange the above messages through the user plane signaling of the F1 interface or the control plane signaling of the F1 interface; the CU of the IAB host and the MT of the IAB node can communicate through The RRC message exchanges the above messages, or the IAB host CU and the MT of the IAB node can interact through the user plane signaling of the F1 interface or the control plane signaling of the F1 interface between the CU of the IAB host and the DU corresponding to the IAB node MT The above news.

Scenario 2: When network coding is used for sidelink data transmission (such as scenarios such as D2D and V2X), the coding capability of the encoder is aligned with the decoding capability of the decoder.

Exemplarily, when network coding is used for sidelink data transmission, both the encoding end and the decoding end are UEs. As shown in FIG. 8, a schematic diagram of a communication process provided by an embodiment of this application, the process includes:

S801: The first UE sends a decoding capability request to a base station, and the base station receives the decoding capability request.

In a possible implementation, the first UE and the second UE have established a connection, or there is a pairing relationship, and the connection relationship or pairing relationship between the first UE and the second UE is stored in the base station, and the base station can decode according to the transmission and decoding The first UE (encoding end) of the capability request determines the second UE (decoding end) corresponding to the first UE, and the decoding capability request sent by the first UE may not carry the identification information of the second UE.

In another possible implementation, the first UE and the second UE have not established a connection, and there is no pairing relationship, the base station cannot determine the second UE corresponding to the first UE according to the first UE, and the decoding sent by the first UE The capability request carries the identification information of the second UE. For example: carrying the IP address or layer 1 address or layer 2 address of the second UE.

S802: The base station sends a decoding capability report request to a second UE, and the second UE receives the decoding capability report request.

The base station may determine the second UE corresponding to the first UE according to the connection relationship or the pairing relationship between the first UE and the second UE, or according to the identification information of the second UE included in the decoding capability request sent by the first UE. The second UE corresponding to the first UE is displayed. After determining the second UE corresponding to the first UE, the base station sends a decoding capability report request to the second UE, requesting the second UE to report the decoding capability.

S803: The second UE sends a decoding capability to the base station, and the base station receives the decoding capability.

Exemplarily, the decoding capability includes the maximum sub-block size supported by the second UE.

In a possible implementation, the decoding capability may also include information about whether the second UE supports network coding (such as supporting network coding or not supporting network coding) and/or the type of supporting network coding (such as supporting Raptor code). Or RaptorQ code or linear block code, etc.). For example, the decoding capability further includes information that the second UE supports network coding and the type of network coding supported is Raptor code.

S804: The base station sends the decoding capability to the first UE, and the first UE receives the decoding capability.

After the first UE receives the decoding capability of the second UE, it can adjust the length of the object, the size of the symbol, and the number of blocks contained in the object during network coding according to the decoding capability of the second UE (the maximum supported sub-block size). One or more of the number of sub-blocks included in the block, the number of sub-blocks included in the block, and symbol alignment parameters, so that the sub-block size when the first UE performs encoding does not exceed the maximum sub-block size supported by the second UE.

Optionally, the first UE may also determine whether to use network coding according to information about whether the second UE supports network coding (such as supporting network coding or not supporting network coding), and may also determine whether to use network coding according to the type of network coding supported by the second UE, Determine the type of network coding used in network coding.

In a possible implementation, the second UE sending the decoding capability to the base station may also occur when it enters the network (for example, when the second UE accesses the base station). If the second UE sends the decoding capability to the base station when it enters the network, the above S803 may occur. Before S801, and there is no S802.

In another possible implementation, the process of the base station requesting the decoding capability report from the second UE may also occur before the first UE sends the decoding capability request to the base station. In this case, the foregoing S802 and S803 may occur before S801.

In another possible implementation, the connection relationship or pairing relationship between the first UE and the second UE is stored in the base station. If the second base station sends (reports) the decoding capability to the base station when it enters the network, the base station can use the stored first UE The connection or pairing relationship between a UE and a second UE is determined, and the first UE (encoding end) corresponding to the second UE (decoding end) is determined, and the information of the second UE (decoding end) is directly sent to the first UE (encoding end). Decoding capability, that is, the above S801 and S802 may be absent.

In addition, in the embodiments of the present application, the signaling for transmitting decoding capabilities and coding capabilities between the UE and the base station may be radio resource control (radio resource control, RRC) signaling, or may be a media access control-control unit ( media access control-control element, MAC CE) signaling, etc.

Scenario 3: One of the encoding end and the decoding end is located on the base station or the CU of the IAB host. When network coding is used for data transmission (uplink or downlink), the encoding capability of the encoding end is aligned with the decoding capability of the decoding end.

For downlink data transmission, taking the CU where the encoding end is the IAB host and the decoding end as the IAB node as an example, as shown in FIG. 9, a communication process provided in this embodiment of the application includes:

S901: The CU of the IAB host sends a decoding capability report request to the IAB node, and the IAB node receives the decoding capability report request.

In the embodiment of the present application, the CU (encoding end) of the IAB host sends a decoding capability report request to the IAB node (decoding end) before performing network encoding, requesting the IAB node to report the decoding capability.

S902: The IAB node sends a decoding capability to the CU of the IAB host, and the CU of the IAB host receives the decoding capability.

Exemplarily, the decoding capability includes the maximum sub-block size supported by the IAB node.

In a possible implementation, the decoding capability may also include information about whether the IAB node supports network coding (such as supporting network coding or not supporting network coding) and/or the type of network coding supported (such as supporting Raptor code or Which one or more of RaptorQ code or linear block code, etc.).

After the CU (encoding end) of the IAB host receives the decoding capability of the IAB node (decoding end), it can adjust the object size, symbol size, One or more of the number of blocks contained in the object, the number of sub-blocks contained in the block, symbol alignment parameters, etc., so that the sub-block size of the IAB host CU does not exceed the maximum sub supported by the IAB node -block size.

Optionally, the CU of the IAB host can also determine whether to use network coding according to the information about whether the IAB node supports network coding (such as supporting network coding or not supporting network coding), and can determine whether to use network coding according to the type of network coding supported by the IAB node The type of network coding used during network coding.

In a possible implementation, the sending of the decoding capability of the IAB node to the CU of the IAB host may also occur during network access (for example, when the IAB node accesses the CU of the IAB host), that is, there may be no S901 described above.

In a possible implementation, in the IAB network, the decoding end may also be the MT of the IAB node or the terminal equipment in the IAB network, and the encoding end may also be the CU (gNB-CU) of the base station.

In another possible implementation, in a non-IAB network, the encoding end may also be a base station, and the decoding end may also be a UE.

In the embodiments of the present application, the signaling of the interactive decoding capabilities between the base station or CU, the access IAB node MT, and the UE may use RRC signaling or MAC CE signaling.

For upstream transmission:

Since the decoding end is located in the base station or gNB-CU or the CU of the IAB host, and the control information required for encoding at the encoding end is controlled by the signaling sent by the base station or gNB-CU or the CU of the IAB host, therefore, for uplink transmission , The base station or gNB-CU or IAB donor CU can directly send its own decoding capability to the decoding end (UE or IAB node) when configuring the network coding related parameters.

Or, the base station, gNB-CU or IAB donor CU implicitly carries the decoding capability when sending the encoding configuration information to the encoding end, for example, when configuring F (object size), AI (symbol alignment parameter), T( Symbol size), Z (number of blocks), and N (number of sub-blocks) have already limited the size of the sub-block generated by the encoder.

Scenario 4: When network coding is used for data transmission (uplink or downlink) in the IAB network scenario, the encoding end and the decoding end are located at the MT of the IAB node and the DU of the IAB host respectively, and the encoding capability of the encoding end is aligned with the decoding capability of the decoding end .

As shown in FIG. 10, it is a schematic diagram of a communication process provided by an embodiment of this application, and the process includes:

S1001: The encoding end sends a decoding capability request to the decoding end, and the decoding end receives the decoding capability reporting request.

In downlink transmission, the encoding end is the DU of the IAB host, and the decoding end is the MT of the IAB node; in the uplink transmission, the encoding end is the MT of the IAB node, and the decoding end is the DU of the IAB host.

In the embodiment of the present application, the decoding capability report request may be carried in the control signaling of the BAP layer. For example, a new BAP control PDU is added to carry the decoding capability report request. And optionally, this BAP control signaling or BAP control PDU may also include the BAP address or IP address identifier of the decoding end.

S1002: The decoding end sends a decoding capability to the encoding end, and the decoding end receives the decoding capability.

Exemplarily, the decoding capability includes the maximum sub-block size supported by the decoding end.

In a possible implementation, the decoding capability may also include information about whether the decoder supports network coding (such as supporting network coding or not supporting network coding) and/or the type of network coding supported (such as supporting Raptor code or Which one or more of RaptorQ code or linear block code, etc.).

After receiving the decoding capability of the decoding end, the encoding end can adjust the length of the object, the size of the symbol, the number of blocks contained in the object, and the number of blocks contained in the object during network encoding according to the decoding capability of the decoding end (the maximum supported sub-block size). One or more of the number of sub-blocks, symbol alignment parameters, etc., so that the sub-block size of the encoding end during encoding does not exceed the maximum sub-block size supported by the decoding end.

In addition, in the embodiment of the present application, the decoding capability may be carried in the control signaling of the BAP layer, for example, another BAP control PDU is added to carry the decoding capability. And optionally, this BAP control signaling or BAP control PDU may also include the BAP address or IP address identifier of the encoding end.

Scenario 5: When data is transmitted between UEs, the encoding capability of the encoding end is aligned with the decoding capability of the decoding end.

Wherein, when sidelink data transmission is performed between UEs, both the encoding end and the decoding end are UEs. As shown in FIG. 11, a schematic diagram of a communication process provided by an embodiment of this application, the process includes:

S1101: The first UE sends a decoding capability report request to a second UE, and the second UE receives the decoding capability report request.

In the embodiment of the present application, the first UE (encoding end) sends a decoding capability report request to the second UE (decoding end) before performing network encoding, requesting the second UE to report the decoding capability.

S1102: The second UE sends a decoding capability to the first UE, and the first UE receives the decoding capability.

In a possible implementation, the decoding capability may also include information about whether the second UE supports network coding (such as supporting network coding or not supporting network coding) and/or the type of supporting network coding (such as supporting Raptor code). Or RaptorQ code or linear block code, etc.).

After the first UE (encoding end) receives the decoding capability of the second UE (decoding end), it can adjust the object size and symbol size during network encoding according to the decoding capability of the second UE (the maximum supported sub-block size) One or more of the number of blocks contained in the object, the number of sub-blocks contained in the block, symbol alignment parameters, etc., so that the size of the sub-block when the first UE is encoding does not exceed the maximum supported by the second UE The size of the sub-block.

In a possible implementation, the second UE sending the decoding capability to the first UE may also occur when the second UE establishes a connection with the first UE, that is, there may be no S1101 described above.

In addition, the foregoing decoding capability report request or decoding capability may be carried in MAC CE signaling or RRC signaling or PC5-S signaling (message) on the side link between the first UE and the second UE. And optionally, the signaling may also include the layer 2 identifier or the layer 1 identifier or the IP address identifier of the first UE or the second UE.

Scenario 6: When the UE or the IAB node performs inter-site handover, the encoding capability of the encoding end is aligned with the decoding capability of the decoding end.

Exemplarily, the description of scenario 6 is that the UE or the IAB node wants to switch from the site 1 (which may be the base station or the IAB host or the CU of the IAB host) to the site 2.

Step 1. Station 1 sends a handover request message to station 2. Optionally, the handover request message includes the decoding capability of the UE or the IAB node and/or the decoding capability request message of the UE or the IAB node at the opposite end of the station 2.

Step 2: Station 2 sends a handover response message to station 1. Optionally, the handover response message carries the decoding capability of the UE or IAB node at the opposite end of station 2, which may be the decoding capability of station 2 itself, or when station 2 When it is an IAB host CU, it may be the decoding capability of the IAB host DU under the IAB host CU.

Exemplarily, the decoding capability includes the maximum sub-block size supported, and may also include information about whether to support network coding (such as support for network coding or not) and/or the type of network coding supported (such as support for Raptor code Or RaptorQ code or linear block code, etc.).

The foregoing mainly introduces the solution provided in this application from the perspective of the interaction between the network device and the encoding device and the decoding device, or between the encoding device and the decoding device. It can be understood that, in order to realize the above-mentioned functions, each network element includes a hardware structure and/or software module (or unit) corresponding to each function. Those skilled in the art should easily realize that in combination with the units and algorithm steps of the examples described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software-driven hardware depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.

FIG. 12 shows a possible exemplary block diagram of a communication device involved in an embodiment of the present application, which can be applied to a case where an integrated unit (module) is adopted. Exemplarily, the communication device 1200 may also exist in the form of software. The apparatus 1200 may include: a processing unit 1202, and may also include a transceiver unit 1203.

In a possible design, the processing unit 1202 is used to implement corresponding processing functions. The transceiver unit 1203 is used to support the communication between the device 1200 and other network entities. Optionally, the transceiving unit 1203 may include a receiving unit and/or a sending unit, which are used to perform receiving and sending operations, respectively. Optionally, the apparatus 1200 may further include a storage unit 1201 for storing program codes and/or data of the apparatus 1200.

The apparatus 1200 may be the network device in any of the above embodiments (for example, the network device is the CU hosted by the IAB in FIGS. 6 and 7 or the base station in FIG. 8), or may also be a network device set in the network device. Chips and other components. The processing unit 1202 may support the apparatus 1200 to execute the actions of the network device in the above method examples. Alternatively, the processing unit 1202 mainly executes the internal actions of the network device in the method example, and the transceiving unit 1203 can support the communication between the apparatus 1200 and the encoding device and the decoding device.

Exemplarily, in one embodiment, the transceiving unit 1203 is configured to receive the decoding capability from the decoding device based on the processing unit 1202, where the decoding capability includes the maximum sub-block size supported by the decoding device; the transceiving unit 1203. It is further configured to send the decoding capability to an encoding device corresponding to the decoding device.

In a possible design, the transceiving unit 1203, before sending the decoding capability to the encoding device corresponding to the decoding device, may also be used to receive a decoding capability request from the encoding device. Optionally, the decoding capability request may also include identification information of the decoding device.

In a possible design, the transceiver unit 1203, before receiving the decoding capability from the decoding device, may also be used to send a decoding capability report request to the decoding device.

In a possible design, the decoding capability may also include information about whether network coding is supported and/or the type of network coding supported.

In an example, the communication device 1200 is the CU of the IAB host, the decoding device is the MT of the IAB node, and the encoding device is the DU of the IAB host; in an example, the communication device 1200 is the IAB host CU, the decoding device is the DU of the IAB host, and the encoding device is the MT of the IAB node; in an example, the communication device 1200 is a base station, the decoding device is the second UE, and the encoding device is the first UE. One UE.

As shown in FIG. 13, an embodiment of the present application further provides a network device 1300. The network device 1300 includes a processor 1310, and may also include a memory 1320 and/or a transceiver 1330.

In a possible design, instructions or programs or data are stored in the memory 1320, and the memory 1320 may be used to implement the functions of the storage unit 1201 in the foregoing embodiment. The processor 1310 is configured to read instructions or programs or data stored in the memory 1320. When the instructions or programs stored in the memory 1320 are executed, the processor 1310 is used to perform the operations performed by the processing unit 1202 in the foregoing embodiment, and the transceiver 1330 is used to perform the operations performed by the transceiving unit 1203 in the foregoing embodiment.

As another form of this embodiment, a computer-readable storage medium is provided, and a program or instruction is stored thereon. When the program or instruction is executed, the method on the network device side in the foregoing method embodiment can be executed.

As another form of this embodiment, a computer program product containing instructions is provided. When the instructions are executed, the method on the network device side in the foregoing method embodiment can be executed.

As another form of this embodiment, a chip is provided, which can implement the method on the network device side in the foregoing method embodiment.

In the case of an integrated unit (module), FIG. 14 shows a possible exemplary block diagram of a communication device involved in an embodiment of the present application, and the device 1400 may exist in the form of software. The apparatus 1400 may include: a processing unit 1402, and may also include a transceiver unit 1403.

In a possible design, the processing unit 1402 is used to implement corresponding processing functions. The transceiver unit 1403 is used to support the communication between the device 1400 and other network entities. Optionally, the transceiving unit 1403 may include a receiving unit and/or a sending unit, which are used to perform receiving and sending operations, respectively. Optionally, the device 1400 may further include a storage unit 1401 for storing program codes and/or data of the device 1400.

The apparatus 1400 may be the encoding device in any of the foregoing embodiments (for example, the encoding device is the MT of the IAB node in FIG. 6, or the DU of the IAB host in FIG. 7, or the first UE in FIG. 8, or the first UE in FIG. 9. The CU of the middle IAB host, or the encoding end in FIG. 10, or the first UE in FIG. 11), or may also be components such as a chip set in the encoding device. The processing unit 1402 may support the apparatus 1400 to perform the actions of the encoding device in the foregoing method examples. Alternatively, the processing unit 1402 mainly performs the internal operations of the encoding device in the method example, and the transceiving unit 1403 can support communication between the apparatus 1400 and the network device or the decoding device.

Exemplarily, in a possible embodiment, the transceiver unit 1403 is configured to receive the decoding capability of the decoding device corresponding to the encoding device sent by the network device based on the processing unit 1402, where the decoding capability includes the decoding device Maximum supported sub-block size.

In a possible design, the transceiving unit 1403, before receiving the decoding capability of the decoding device corresponding to the encoding device sent by the network device, may also be used to send a decoding capability request to the network device. Optionally, the decoding capability request includes identification information of the decoding device.

In an example, the network device is a CU hosted by an IAB, the decoding device is an MT hosted by an IAB node, and the communication device 1400 is a DU hosted by an IAB; in an example, the network device is a CU hosted by an IAB The decoding device is the DU of the IAB host, the communication device 1400 is the MT of the IAB node; in an example, the network device is a base station, the decoding device is the second UE, and the communication device 1400 is the second UE. One UE.

In another possible embodiment, the transceiving unit 1403 is configured to receive the decoding capability from the decoding device based on the processing unit 1402, where the decoding capability includes the maximum sub-block size supported by the decoding device.

In a possible design, before receiving the decoding capability from the decoding device, the transceiving unit 1403 may also be used to send a decoding capability report request to the decoding device.

In an example, the communication device 1400 is a CU of the IAB host, and the decoding device is an IAB node; in an example, the communication device 1400 is a DU of the IAB host, and the decoding device is an MT of the IAB node; In an example, the communication device 1400 is the MT of the IAB node, and the decoding device is the DU hosted by the IAB; in an example, the communication device 1400 is the first UE, and the decoding device is the second UE. .

As shown in FIG. 15, an embodiment of the present application further provides an encoding device 1500. The encoding device 1500 includes a processor 1510, and may also include a memory 1520 and/or a transceiver 1530.

In a possible design, the memory 1520 stores instructions or programs or data, and the memory 1520 may be used to implement the functions of the storage unit 1401 in the foregoing embodiment. The processor 1510 is configured to read instructions or programs or data stored in the memory 1520. When the instructions or programs stored in the memory 1520 are executed, the processor 1510 is used to perform the operations performed by the processing unit 1402 in the foregoing embodiment, and the transceiver 1530 is used to perform the operations performed by the transceiving unit 1403 in the foregoing embodiment.

As another form of this embodiment, a computer-readable storage medium is provided, and a program or instruction is stored thereon. When the program or instruction is executed, the method on the encoding device side in the foregoing method embodiment can be executed.

As another form of this embodiment, a computer program product containing instructions is provided. When the instructions are executed, the method on the encoding device side in the foregoing method embodiment can be executed.

As another form of this embodiment, a chip is provided, which can implement the method on the encoding device side in the foregoing method embodiment.

In the case of an integrated unit (module), FIG. 16 shows a possible exemplary block diagram of a communication device involved in an embodiment of the present application, and the device 1600 may exist in the form of software. The apparatus 1600 may include: a processing unit 1602 and a transceiver unit 1603.

In a possible design, the processing unit 1602 is used to implement corresponding processing functions. The transceiver unit 1603 is used to support the communication between the device 1600 and other network entities. Optionally, the transceiving unit 1603 may include a receiving unit and/or a sending unit, which are used to perform receiving and sending operations, respectively. Optionally, the apparatus 1600 may further include a storage unit 1601 for storing program codes and/or data of the apparatus 1600.

The apparatus 1600 may be the decoding device in any of the foregoing embodiments (for example, the decoding device is the DU of the IAB host in FIG. 6, or the MT of the IAB node in FIG. 7, or the second UE in FIG. 8, or the second UE in FIG. 9 The middle IAB node, or the decoding end in FIG. 10, or the second UE in FIG. 11), or may also be components such as a chip set in the decoding device. The processing unit 1602 may support the apparatus 1600 to perform the actions of the decoding device in the foregoing method examples. Alternatively, the processing unit 1602 mainly executes the internal actions of the decoding device in the method example, and the transceiving unit 1603 can support the communication between the apparatus 1600 and the network device or the encoding device.

Exemplarily, in a possible embodiment, the transceiver unit 1603 is configured to send the decoding capability to the network device based on the processing unit 1602, where the decoding capability includes the maximum sub-block size supported by the decoding device.

In a possible design, the transceiving unit 1603, before sending the decoding capability to the network device, may also be used to receive a decoding capability report request from the network device.

In an example, the network device is an IAB-hosted CU, and the communication device 1600 is an IAB node's MT; in an example, the network device is an IAB-hosted CU, and the communication device 1600 is an IAB-hosted CU. DU; In an example, the network device is a base station, and the communication device 1600 is a second UE.

In another possible embodiment, the transceiver unit 1603 is configured to send the decoding capability to the encoding device based on the processing unit 1602, where the decoding capability includes the maximum sub-block size supported by the decoding device.

In a possible design, the transceiving unit 1603, before sending the decoding capability to the encoding device, may also be used to receive a decoding capability report request from the encoding device.

In an example, the encoding device is a CU of the IAB host, and the communication device 1600 is an IAB node; in an example, the encoding device is a DU of the IAB host, and the communication device 1600 is an MT of the IAB node; In an example, the encoding device is the MT of the IAB node, and the communication device 1600 is the DU of the IAB host; in an example, the encoding device is the first UE, and the communication device 1600 is the second UE.

As shown in FIG. 17, an embodiment of the present application further provides a decoding device 1700. The decoding device 1700 includes a processor 1710, and may also include a memory 1720 and/or a transceiver 1730.

In a possible design, the memory 1720 stores instructions or programs or data, and the memory 1720 may be used to implement the functions of the storage unit 1601 in the foregoing embodiment. The processor 1710 is configured to read instructions or programs or data stored in the memory 1720. When the instructions or programs stored in the memory 1720 are executed, the processor 1710 is used to perform the operations performed by the processing unit 1602 in the foregoing embodiment, and the transceiver 1730 is used to perform the operations performed by the transceiving unit 1603 in the foregoing embodiment.

As another form of this embodiment, a computer-readable storage medium is provided, and a program or instruction is stored thereon. When the program or instruction is executed, the method on the decoding device side in the foregoing method embodiment can be executed.

As another form of this embodiment, a computer program product containing instructions is provided. When the instructions are executed, the method on the decoding device side in the foregoing method embodiment can be executed.

As another form of this embodiment, a chip is provided, which can implement the method on the decoding device side in the foregoing method embodiment.

It should be noted that the processor in the embodiment of the present application may be an integrated circuit chip with signal processing capability. In the implementation process, the steps of the foregoing method embodiments can be completed by hardware integrated logic circuits in the processor or instructions in the form of software. The above-mentioned processor may be a general-purpose central processing unit (central processing unit, CPU), general-purpose processor, digital signal processing (digital signal processing, DSP), application specific integrated circuits (ASIC), field programmable gate array Field programmable gate array (FPGA) or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof; it can also be a combination that implements computing functions, such as a combination of one or more microprocessors, DSP and micro-processing The combination of the device and so on. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.

It can be understood that the memory or storage unit in the embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. Among them, the non-volatile memory can be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), and electrically available Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory. The volatile memory may be random access memory (RAM), which is used as an external cache. By way of exemplary but not restrictive description, many forms of RAM are available, such as static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), and synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (synchlink DRAM, SLDRAM) ) And direct memory bus random access memory (direct rambus RAM, DR RAM). It should be noted that the memories of the systems and methods described herein are intended to include, but are not limited to, these and any other suitable types of memories.

In the above-mentioned embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented by software, it can be implemented in the form of a computer program product in whole or in part. The computer program product includes one or more computer programs or instructions. When the computer program or instruction is loaded and executed on the computer, the process or function described in the embodiment of the present application is executed in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer program or instruction may be stored in a computer readable storage medium or transmitted through the computer readable storage medium. The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server integrating one or more available media. The usable medium may be a magnetic medium, such as a floppy disk, a hard disk, and a magnetic tape; it may also be an optical medium, such as a DVD; and it may also be a semiconductor medium, such as a solid state disk (SSD).

The various illustrative logic units and circuits described in the embodiments of this application can be implemented by general-purpose processors, digital signal processors, application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, Discrete gates or transistor logic, discrete hardware components, or any combination of the above are designed to implement or operate the described functions. The general-purpose processor may be a microprocessor. Alternatively, the general-purpose processor may also be any traditional processor, controller, microcontroller, or state machine. The processor can also be implemented by a combination of computing devices, such as a digital signal processor and a microprocessor, multiple microprocessors, one or more microprocessors combined with a digital signal processor core, or any other similar configuration. accomplish.

The steps of the method or algorithm described in the embodiments of the present application can be directly embedded in hardware, a software unit executed by a processor, or a combination of the two. The software unit can be stored in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM or any other storage medium in the art. Exemplarily, the storage medium may be connected to the processor, so that the processor can read information from the storage medium, and can store and write information to the storage medium. Optionally, the storage medium may also be integrated into the processor. The processor and the storage medium can be arranged in an ASIC, and the ASIC can be arranged in a terminal device. Optionally, the processor and the storage medium may also be provided in different components in the terminal device.

These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so as to execute on the computer or other programmable equipment. The instructions provide steps for implementing the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

Although the embodiments of the present application are described in combination with specific features, it is obvious that various modifications and combinations can be made without departing from the spirit and scope of the embodiments of the present application. Correspondingly, this specification and drawings are merely exemplary descriptions of the embodiments of the present application defined by the appended claims, and are deemed to cover any and all modifications, changes, combinations or equivalents within the scope of the embodiments of the present application.

Claims

A communication method, characterized in that it comprises:

The network device receives the decoding capability from the decoding device, where the decoding capability includes the largest sub-block size supported by the decoding device;

The network device sends the decoding capability to an encoding device corresponding to the decoding device.
The method according to claim 1, wherein before the network device sends the decoding capability to the encoding device corresponding to the decoding device, the method further comprises:

The network device receives the decoding capability request from the encoding device.
The method according to claim 2, wherein the decoding capability request includes identification information of the decoding device.
The method according to any one of claims 1 to 3, wherein before the network device receives the decoding capability from the decoding device, the method further comprises:

The network device sends a decoding capability report request to the decoding device.
The method according to any one of claims 1 to 4, wherein the decoding capability further includes information about whether to support network coding and/or the type of network coding supported.
The method according to any one of claims 1-5, wherein the network device is a centralized unit CU that accesses the backhaul integrated IAB host, and the decoding device is a mobile terminal MT of an IAB node, The encoding device is the distributed unit DU hosted by the IAB; or,

The network device is the CU hosted by the IAB, the decoding device is the DU hosted by the IAB, and the encoding device is the MT of the IAB node; or,

The network device is a base station, the decoding device is a second user equipment UE, and the encoding device is a first UE.
A communication method, characterized in that it comprises:

The encoding device receives the decoding capability from the decoding device, where the decoding capability includes the largest sub-block size supported by the decoding device.
8. The method of claim 7, wherein before the encoding device receives the decoding capability from the decoding device, the method further comprises:

The encoding device sends a decoding capability report request to the decoding device.
The method according to claim 7 or 8, wherein the decoding capability further includes information about whether network coding is supported and/or the type of network coding supported.
The method according to any one of claims 7-9, wherein the encoding device is a centralized unit CU that accesses a backhaul integrated IAB host, and the decoding device is an IAB node; or,

The encoding device is the distributed unit DU of the IAB host, and the decoding device is the mobile terminal MT of the IAB node; or,

The encoding device is the MT of the IAB node, and the decoding device is the DU of the IAB host; or,

The encoding device is a first user equipment UE, and the decoding device is a second UE.
A communication method, characterized in that it comprises:

The decoding device sends a decoding capability to the network device, where the decoding capability includes the largest sub-block size supported by the decoding device.
The method according to claim 11, wherein before the decoding device sends the decoding capability to the network device, the method further comprises:

The decoding device receives a decoding capability report request from the network device.
The method according to claim 11 or 12, wherein the decoding capability further includes information about whether network coding is supported and/or a type of network coding supported.
The method according to any one of claims 11-13, wherein the network device is a centralized unit CU that accesses the backhaul integrated IAB host, and the decoding device is a mobile terminal MT of an IAB node; or,

The network device is a CU hosted by IAB, and the decoding device is a distributed unit DU hosted by IAB; or,

The network device is a base station, and the decoding device is a second user equipment UE.
A communication method, characterized in that it comprises:

The encoding device receives the decoding capability of the decoding device corresponding to the encoding device sent by the network device, where the decoding capability includes the maximum sub-block size supported by the decoding device.
The method according to claim 15, wherein before the encoding device receives the decoding capability of the decoding device corresponding to the encoding device sent by the network device, the method further comprises:

The encoding device sends a decoding capability request to the network device.
The method according to claim 16, wherein the decoding capability request includes identification information of the decoding device.
The method according to any one of claims 15-17, wherein the decoding capability further includes information about whether to support network coding and/or the type of network coding supported.
The method according to any one of claims 15-18, wherein the network device is a centralized unit CU that accesses the backhaul integrated IAB host, and the decoding device is a mobile terminal MT of an IAB node, The encoding device is the distributed unit DU hosted by the IAB; or,

The network device is the CU hosted by the IAB, the decoding device is the DU hosted by the IAB, and the encoding device is the MT of the IAB node; or,

The network device is a base station, the decoding device is a second user equipment UE, and the encoding device is a first UE.
A communication method, characterized in that it comprises:

The decoding device sends a decoding capability to the encoding device, where the decoding capability includes the largest sub-block size supported by the decoding device.
The method according to claim 20, wherein before the decoding device sends the decoding capability to the encoding device, the method further comprises:

The decoding device receives a decoding capability report request from the encoding device.
The method according to claim 20 or 21, wherein the decoding capability further includes information about whether to support network coding and/or a type of support for network coding.
The method according to any one of claims 20-22, wherein the encoding device is a centralized unit CU that accesses and returns an integrated IAB host, and the decoding device is an IAB node; or,

The encoding device is the distributed unit DU of the IAB host, and the decoding device is the mobile terminal MT of the IAB node; or,

The encoding device is the MT of the IAB node, and the decoding device is the DU of the IAB host; or,

The encoding device is a first user equipment UE, and the decoding device is a second UE.
A communication device, characterized by comprising: a processing unit and a transceiver unit;

The transceiving unit is configured to receive a decoding capability from a decoding device, where the decoding capability includes the largest sub-block size supported by the decoding device;

The processing unit is configured to determine the encoding device corresponding to the decoding device;

The transceiver unit is further configured to send the decoding capability to the encoding device.
The apparatus according to claim 24, wherein the transceiving unit is further configured to receive a decoding capability request from the encoding device before sending the decoding capability to the encoding device.
The apparatus according to claim 25, wherein the decoding capability request includes identification information of the decoding device.
The apparatus according to any one of claims 24-26, wherein before the transceiver unit receives the decoding capability from the decoding device, it is further configured to send a decoding capability report request to the decoding device.
The apparatus according to any one of claims 24-27, wherein the decoding capability further includes information about whether to support network coding and/or a type of network coding supported.
The device according to any one of claims 24-28, wherein the device is a centralized unit CU that accesses the backhaul integrated IAB host, the decoding device is a mobile terminal MT of the IAB node, and the mobile terminal MT of the IAB node. The encoding device is a distributed unit DU hosted by an IAB; or, the device is a CU hosted by an IAB, the decoding device is a DU hosted by an IAB, and the encoding device is an MT of an IAB node; or, the device is a base station , The decoding device is a second user equipment UE, and the encoding device is a first UE.
A communication device, characterized by comprising: a processing unit and a transceiver unit;

The transceiving unit is configured to receive a decoding capability from a decoding device, where the decoding capability includes the largest sub-block size supported by the decoding device;

The processing unit is configured to determine the decoding capability of the decoding device.
The apparatus according to claim 30, wherein before the transceiver unit receives the decoding capability from the decoding device, it is further configured to send a decoding capability report request to the decoding device.
The apparatus according to claim 30 or 31, wherein the decoding capability further includes information about whether to support network coding and/or the type of network coding supported.
The device according to any one of claims 30-32, wherein the device is a centralized unit CU that accesses and returns an integrated IAB host, and the decoding device is an IAB node; or, the device Is the distributed unit DU of the IAB host, the decoding device is the mobile terminal MT of the IAB node; or, the device is the MT of the IAB node, and the decoding device is the DU of the IAB host; or, the device is the first The user equipment UE and the decoding device are the second UE.
A communication device, characterized by comprising: a processing unit and a transceiver unit;

The processing unit is configured to determine a decoding capability, where the decoding capability includes the maximum sub-block size supported by the device;

The transceiver unit is configured to send the decoding capability to a network device.
The apparatus according to claim 34, wherein before sending the decoding capability to the network device, the transceiving unit is further configured to receive a decoding capability report request from the network device.
The device according to claim 34 or 35, wherein the decoding capability further includes information about whether to support network coding and/or a type of network coding supported.
The device according to any one of claims 34-36, wherein the network device is a centralized unit CU that accesses and returns an integrated IAB host, and the device is a mobile terminal MT of an IAB node; or , The network equipment is a CU hosted by an IAB, and the apparatus is a distributed unit DU hosted by an IAB; or, the network equipment is a base station, and the apparatus is a second user equipment UE.
A communication device, characterized by comprising: a processing unit and a transceiver unit

The transceiving unit is configured to receive the decoding capability of the decoding device corresponding to the apparatus sent by the network device, where the decoding capability includes the maximum sub-block size supported by the decoding device;

The processing unit is configured to determine the decoding capability of the decoding device.
The apparatus according to claim 38, wherein the transceiver unit is further configured to send a decoding capability request to the network device before receiving the decoding capability of the decoding device corresponding to the apparatus sent by the network device.
The apparatus according to claim 39, wherein the decoding capability request includes identification information of the decoding device.
The apparatus according to any one of claims 38-40, wherein the decoding capability further includes information about whether to support network coding and/or a type of network coding supported.
The apparatus according to any one of claims 38-41, wherein the network device is a centralized unit CU that accesses and returns an integrated IAB host, and the decoding device is a mobile terminal MT of an IAB node, The device is a distributed unit DU hosted by an IAB; or, the network device is a CU hosted by an IAB, the decoding device is a DU hosted by an IAB, and the device is an MT of an IAB node; or, the network device is The base station, the decoding device is a second user equipment UE, and the apparatus is a first UE.
A communication device, characterized by comprising: a processing unit and a transceiver unit

The processing unit is configured to determine a decoding capability, where the decoding capability includes the maximum sub-block size supported by the device;

The transceiver unit is configured to send the decoding capability to the encoding device.
The apparatus according to claim 43, wherein the transceiving unit is further configured to receive a decoding capability report request from the encoding device before sending the decoding capability to the encoding device.
The device according to claim 43 or 44, wherein the decoding capability further includes information about whether to support network coding and/or a type of network coding supported.
The apparatus according to any one of claims 43-45, wherein the encoding device is a centralized unit CU that accesses and returns an integrated IAB host, and the apparatus is an IAB node; or, the encoding The device is the distributed unit DU hosted by the IAB, and the device is the mobile terminal MT of the IAB node; or, the encoding device is the MT of the IAB node, and the device is the DU hosted by the IAB; or, the encoding device is the first A user equipment UE, and the device is a second UE.
A communication device, characterized in that the communication device includes a processor and a transceiver, the transceiver is used for information exchange between the communication device and other communication devices, and the processor executes program instructions to execute The method of any one of claims 1-6.
A communication device, characterized in that the communication device includes a processor and a transceiver, the transceiver is used for information exchange between the communication device and other communication devices, and the processor executes program instructions to execute The method of any one of claims 7-10.
A communication device, characterized in that the communication device includes a processor and a transceiver, the transceiver is used for information exchange between the communication device and other communication devices, and the processor executes program instructions to execute The method of any one of claims 11-14.
A communication device, characterized in that the communication device includes a processor and a transceiver, the transceiver is used for information exchange between the communication device and other communication devices, and the processor executes program instructions to execute The method of any one of claims 15-19.
A communication device, characterized in that the communication device includes a processor and a transceiver, the transceiver is used for information exchange between the communication device and other communication devices, and the processor executes program instructions to execute The method of any one of claims 20-23.
A communication device, characterized in that the device is used to execute the method according to any one of claims 1-23.
A communication system, characterized by comprising at least two of a network device, an encoding device, and a decoding device, the network device being used to implement the method and the decoding device according to any one of claims 1 to 6 To implement the method according to any one of claims 11-14, the encoding device is used to implement the method according to any one of claims 15-19.
A communication system, characterized by comprising an encoding device for implementing the method according to any one of claims 7-10, and a decoding device for implementing the method according to any one of claims 20-23.
A computer-readable storage medium, characterized in that the computer-readable storage medium is used to execute any one of claims 1-6 or 7-10 or 11-14 or 15-19 or 20-23. Instructions for the described method.
A chip, characterized in that, when the chip is running, the method according to any one of claims 1-6 or 7-10 or 11-14 or 15-19 or 20-23 is realized.
A computer program product, characterized in that it comprises a computer program or instruction, when the computer program or instruction is executed, it realizes as claimed in claim 1-6 or 7-10 or 11-14 or 15-19 or 20-23 The method of any one of.