WO2023004642A1

WO2023004642A1 - Data transmission method and apparatus, and terminal device and network device

Info

Publication number: WO2023004642A1
Application number: PCT/CN2021/109051
Authority: WO
Inventors: 张博源; 卢前溪; 冷冰雪
Original assignee: Oppo广东移动通信有限公司
Priority date: 2021-07-28
Filing date: 2021-07-28
Publication date: 2023-02-02
Also published as: CN117280802A

Abstract

Provided in the embodiments of the present application are a data transmission method and apparatus, and a terminal device and a network device. The method comprises: a first terminal performing data packet duplication, so as to obtain a first data packet and a second data packet; and the first terminal sending the first data packet and the second data packet to a second terminal by means of an SL, wherein the first data packet is sent by means of a first carrier, the second data packet is sent by means of a second carrier, and the first carrier is the same as or different from the second carrier.

Description

A data transmission method and device, terminal equipment, and network equipment

technical field

The embodiments of the present application relate to the technical field of mobile communications, and in particular to a data transmission method and device, terminal equipment, and network equipment.

Background technique

Device-to-Device communication (Device-to-Device, D2D) is a sidelink (Sidelink, SL) transmission technology, which is different from the way in which communication data is received or sent by the base station in the traditional cellular system, and uses terminal-to-terminal direct The way of communication, therefore, has higher spectral efficiency and lower transmission delay.

In the 3rd Generation Partnership Project ( ^3rd Generation Partnership Project, 3GPP), the D2D in the LTE system is divided into the following stages for research: proximity service (Proximity based Service, ProSe), vehicle networking (vehicle to X, V2X) ) and further enhancements for wearable devices Long Term Evolution (LTE) D2D (Further Enhancements to LTE Device to Device, FeD2D), multi-carrier, among them, ProSe service can achieve power saving effect, V2X needs attention when To solve the delay problem, FeD2D is mainly oriented to low mobile speed and low power access scenarios, and multi-carriers are used to improve data transmission rate and transmission reliability.

On the basis of LTE-based V2X (i.e. LTE V2X), V2X based on New Radio (NR) (i.e. LTE V2X) is not limited to broadcast scenarios, but further expanded to unicast and multicast scenarios. Research the application of V2X in these scenarios. Since the vehicle system has a continuous power supply, power efficiency is not the main issue, but the delay of data transmission is the main issue. Therefore, the system design requires the terminal equipment to perform continuous transmission and reception, but the reliability of data transmission cannot be guaranteed. .

Contents of the invention

Embodiments of the present application provide a data transmission method and device, a terminal device, and a network device.

The data transmission method provided in the embodiment of this application includes:

The first terminal copies the data packet to obtain the first data packet and the second data packet;

The first terminal sends the first data packet and the second data packet to the second terminal through SL, the first data packet is sent through the first carrier, and the second data packet is sent through the second carrier , the first carrier is the same as or different from the second carrier.

The second terminal receives the first data packet and the second data packet sent by the first terminal through the SL; the first data packet and the second data packet are obtained by duplicating data packets of the first terminal; the first data A packet is received over a first carrier, said second data packet is received over a second carrier, said first carrier being the same as or different from said second carrier.

The network device configures a data packet copy configuration for the first terminal, the data packet copy configuration is used for the data packet copy function of the first terminal, and the first data packet and the second data packet obtained based on the data packet copy function pass The same or different carrier is sent to the second terminal.

The data transmission device provided in the embodiment of the present application is applied to the first terminal, and includes:

The first copying unit is configured to copy the data packet to obtain the first data packet and the second data packet;

The first sending unit is configured to send the first data packet and the second data packet to a second terminal through a sidelink (Sidelink, SL), the first data packet is sent through a first carrier, and the The second data packet is sent through a second carrier, and the first carrier is the same as or different from the second carrier.

The data transmission device provided in the embodiment of the present application is applied to the second terminal, including:

The fifth receiving unit is configured to receive the first data packet and the second data packet sent by the first terminal through the SL; the first data packet and the second data packet are obtained by duplicating data packets by the first terminal; The first data packet is received through a first carrier, the second data packet is received through a second carrier, and the first carrier is the same as or different from the second carrier.

The data transmission device provided in the embodiment of the present application is applied to network equipment, including:

The first configuration unit is configured to configure a data packet copy configuration for the first terminal, the data packet copy configuration is used for the data packet copy function of the first terminal, and the first data packet obtained based on the data packet copy function and The second data packet is sent to the second terminal through the same or different carrier.

The terminal device provided in this embodiment of the present application may be the first terminal or the second terminal in the above solution, and the terminal device includes a processor and a memory. The memory is used to store computer programs, and the processor is used to call and run the computer programs stored in the memory to execute the above data transmission method.

The network device provided in the embodiment of the present application includes a processor and a memory. The memory is used to store computer programs, and the processor is used to call and run the computer programs stored in the memory to execute the above data transmission method.

The chip provided in the embodiment of the present application is used to implement the above data transmission method.

Specifically, the chip includes: a processor, configured to call and run a computer program from the memory, so that the device installed with the chip executes the above-mentioned data transmission method.

The computer-readable storage medium provided by the embodiment of the present application is used for storing a computer program, and the computer program causes the computer to execute the above-mentioned data transmission method.

The computer program product provided by the embodiments of the present application includes computer program instructions, and the computer program instructions cause a computer to execute the above data transmission method.

The computer program provided by the embodiments of the present application, when running on a computer, enables the computer to execute the above data transmission method.

Through the above technical solution, the first terminal obtains the first data packet and the second data packet based on the data packet copy function, and sends the first data packet and the second data packet based on the SL between the first terminal and the second terminal to The second terminal improves data transmission reliability.

Description of drawings

The drawings described here are used to provide a further understanding of the application and constitute a part of the application. The schematic embodiments and descriptions of the application are used to explain the application and do not constitute an improper limitation to the application. In the attached picture:

FIG. 1 is a schematic diagram of an application scenario of an embodiment of the present application;

FIG. 2 is a schematic structural diagram of another communication system provided by an embodiment of the present application;

FIG. 3 is a schematic structural diagram of another communication system provided by an embodiment of the present application;

FIG. 4 is an optional schematic flowchart of a data transmission method provided in an embodiment of the present application;

FIG. 5 is an optional schematic flowchart of a data transmission method provided in an embodiment of the present application;

FIG. 6 is an optional schematic flowchart of a data transmission method provided in an embodiment of the present application;

FIG. 7 is a schematic structural diagram of an optional data transmission device provided by an embodiment of the present application;

FIG. 8 is a schematic diagram of an optional scenario of a data transmission device provided in an embodiment of the present application;

FIG. 9 is a schematic diagram of an optional scenario of a data transmission device provided in an embodiment of the present application;

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

FIG. 11 is a schematic structural diagram of a chip according to an embodiment of the present application;

Fig. 12 is a schematic block diagram of a communication system provided by an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

FIG. 1 is a schematic diagram of an application scenario of an embodiment of the present application.

As shown in FIG. 1 , a communication system 100 may include a terminal device 110 and a network device 120 . The network device 120 may communicate with the terminal device 110 through an air interface. Multi-service transmission is supported between the terminal device 110 and the network device 120 .

It should be understood that the embodiment of the present application is only described by using the communication system 100 as an example, but the embodiment of the present application is not limited thereto. That is to say, the technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Long Term Evolution (Long Term Evolution, LTE) system, LTE Time Division Duplex (Time Division Duplex, TDD), Universal Mobile Communication System (Universal Mobile Telecommunication System, UMTS), Internet of Things (Internet of Things, IoT) system, Narrow Band Internet of Things (NB-IoT) system, enhanced Machine-Type Communications (eMTC) system, 5G communication system (also known as New Radio (NR) communication system), or future communication systems, etc.

In the communication system 100 shown in FIG. 1 , the network device 120 may be an access network device that communicates with the terminal device 110 . The access network device can provide communication coverage for a specific geographical area, and can communicate with terminal devices 110 (such as UEs) located in the coverage area.

The network device 120 may be an evolved base station (Evolutional Node B, eNB or eNodeB) in a Long Term Evolution (Long Term Evolution, LTE) system, or a Next Generation Radio Access Network (NG RAN) device, Either a base station (gNB) in the NR system, or a wireless controller in a cloud radio access network (Cloud Radio Access Network, CRAN), or the network device 120 can be a relay station, an access point, a vehicle-mounted device, a wearable Devices, hubs, switches, bridges, routers, or network devices in the future evolution of the Public Land Mobile Network (Public Land Mobile Network, PLMN), etc.

The terminal device 110 may be any terminal device, including but not limited to a terminal device connected to the network device 120 or other terminal devices by wire or wirelessly.

For example, the terminal equipment 110 may refer to an access terminal, a user equipment (User Equipment, UE), a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, user agent, or user device. Access terminals can be cellular phones, cordless phones, Session Initiation Protocol (SIP) phones, IoT devices, satellite handheld terminals, Wireless Local Loop (WLL) stations, Personal Digital Assistant , PDA), handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, terminal devices in 5G networks or terminal devices in future evolution networks, etc.

The terminal device 110 may be used for D2D communication.

The wireless communication system 100 may also include a core network device 130 that communicates with the base station. The core network device 130 may be a 5G core network (5G Core, 5GC) device, for example, Access and Mobility Management Function (Access and Mobility Management Function , AMF), and for example, authentication server function (Authentication Server Function, AUSF), and for example, user plane function (User Plane Function, UPF), and for example, session management function (Session Management Function, SMF). Optionally, the core network device 130 may also be a packet core evolution (Evolved Packet Core, EPC) device of the LTE network, for example, a data gateway (Session Management Function+Core Packet Gateway, SMF+PGW- C) equipment. It should be understood that SMF+PGW-C can realize the functions of SMF and PGW-C at the same time. In the process of network evolution, the above-mentioned core network equipment may be called by other names, or a new network entity may be formed by dividing functions of the core network, which is not limited in this embodiment of the present application.

Various functional units in the communication system 100 may also establish a connection through a next generation network (next generation, NG) interface to implement communication.

For example, the terminal device establishes an air interface connection with the access network device through the Uu interface to transmit user plane data and control plane signaling; the terminal device can establish a control plane signaling connection with the AMF through the NG interface 1 (N1 for short); the access Network equipment such as the next generation wireless access base station (gNB), can establish a user plane data connection with UPF through NG interface 3 (abbreviated as N3); access network equipment can establish control plane signaling with AMF through NG interface 2 (abbreviated as N2) connection; UPF can establish a control plane signaling connection with SMF through NG interface 4 (abbreviated as N4); UPF can exchange user plane data with the data network through NG interface 6 (abbreviated as N6); AMF can communicate with SMF through NG interface 11 (abbreviated as N11) The SMF establishes a control plane signaling connection; the SMF may establish a control plane signaling connection with the PCF through an NG interface 7 (N7 for short).

Figure 1 exemplarily shows a base station, a core network device, and two terminal devices. Optionally, the wireless communication system 100 may include multiple base station devices and each base station may include other numbers of terminals within the coverage area. The device is not limited in the embodiment of this application.

3GPP is researching Non Terrestrial Network (NTN) technology. NTN generally uses satellite communication to provide communication services to ground users. Compared with terrestrial cellular network communication, satellite communication has many unique advantages. First of all, satellite communication is not restricted by the user's region. For example, general land communication cannot cover areas such as oceans, mountains, deserts, etc. that cannot be equipped with communication equipment or are not covered by communication due to sparse population. For satellite communication, due to a Satellites can cover a large area of the ground, and satellites can orbit the earth, so theoretically every corner of the earth can be covered by satellite communications. Secondly, satellite communication has great social value. Satellite communication can be covered at a lower cost in remote mountainous areas, poor and backward countries or regions, so that people in these regions can enjoy advanced voice communication and mobile Internet technology, which is conducive to narrowing the digital gap with developed regions and promoting development of these areas. Thirdly, the distance of satellite communication is long, and the cost of communication does not increase significantly with the increase of communication distance; finally, the stability of satellite communication is high, and it is not limited by natural disasters.

It should be noted that FIG. 1 is only an illustration of a system applicable to this application, and of course, the method shown in the embodiment of this application may also be applicable to other systems. Furthermore, the terms "system" and "network" are often used interchangeably herein. The term "and/or" in this article is just an association relationship describing associated objects, which means that there can be three relationships, for example, A and/or B can mean: A exists alone, A and B exist simultaneously, and there exists alone B these three situations. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship. It should also be understood that the "indication" mentioned in the embodiments of the present application may be a direct indication, may also be an indirect indication, and may also mean that there is an association relationship. For example, A indicates B, which can mean that A directly indicates B, for example, B can be obtained through A; it can also indicate that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also indicate that there is an association between A and B relation. It should also be understood that the "correspondence" mentioned in the embodiments of the present application may mean that there is a direct correspondence or an indirect correspondence between the two, or that there is an association between the two, or that it indicates and is indicated. , configuration and configured relationship. It should also be understood that the "predefined" or "predefined rules" mentioned in the embodiments of this application can be used by pre-saving corresponding codes, tables or other It is implemented by indicating related information, and this application does not limit the specific implementation. For example, pre-defined may refer to defined in the protocol. It should also be understood that in the embodiment of the present application, the "protocol" may refer to a standard protocol in the communication field, for example, it may include the LTE protocol, the NR protocol, and related protocols applied to future communication systems, and this application does not limit this .

In order to facilitate the understanding of the technical solutions of the embodiments of the present application, the related technologies of the embodiments of the present application are described below. The following related technologies can be combined with the technical solutions of the embodiments of the present application as optional solutions, and all of them belong to the embodiments of the present application. protected range.

D2D is an SL transmission technology, which is different from the way in which communication data is received or sent by the base station in the traditional cellular system. It adopts the method of terminal-to-terminal direct communication, so it has higher spectral efficiency and lower transmission delay. Two resource authorization modes are defined in 3GPP: Mode A and Mode B.

-Mode A: The transmission resources of the terminal are allocated by the base station, and the terminal sends data on the sidelink according to the resources allocated by the base station; the base station can allocate resources for a single transmission to the terminal, and can also allocate semi-static transmission to the terminal H.

-Mode B: The vehicle-mounted terminal selects a resource from the resource pool for data transmission.

For mode A, as shown in Figure 2, the eNB configures grant resources for the terminal. When the terminal is configured with sideline grant-free resources, when the sideline data arrives, the terminal uses the sideline grant-free resources to transmit the sideline data. row data.

For mode B, as shown in Figure 3, the terminal selects resources in the resource pool by itself,

In 3GPP, D2D is divided into different stages for research.

-ProSe: Device-to-device communication in Rel-12/13 is researched on the ProSe scenario, which is mainly aimed at public security services.

■In ProSe, by configuring the position of the resource pool in the time domain, for example, the resource pool is discontinuous in the time domain, so that the UE can discontinuously send/receive data on the sidelink, thereby achieving the effect of power saving.

-V2X: In Rel-14/15, the Internet of Vehicles system is researched on the scene of vehicle-to-vehicle communication, which is mainly oriented to relatively high-speed moving vehicle-to-vehicle and vehicle-to-human communication services;

■In V2X, because the vehicle system has a continuous power supply, power efficiency is not the main issue, but the delay of data transmission is the main issue. Therefore, the system design requires the terminal equipment to perform continuous transmission and reception.

-Wearable Devices (FeD2D): In Rel-14, this scenario studies the scenario where wearable devices access the network through mobile phones, and it is mainly for scenarios with low mobile speed and low power access.

■In FeD2D, in the pre-research stage, 3GPP concludes that the base station can configure the DRX parameters of the remote terminal through a relay terminal, but since this topic has not entered the standardization stage, there is no conclusion on how to configure the specific details of DRX.

-Multi-carrier: In Rel-15 LTE V2X, a multi-carrier mechanism is introduced.

The multi-carrier mechanism is reflected in that the UE can support data packet segmentation and use multiple carriers to transmit data packets to improve the data transmission rate;

Data packet duplication, duplicating the same data packet twice and sending them with two carriers to improve transmission reliability; and multi-carrier reception enhancement at the receiving end. For packet duplication, V2X sidelink communication supports sidelink packet duplication and is performed at the Packet Data Convergence Protocol (PDCP) layer of the UE. For sidelink link packet replication for transmission, the PDCP Protocol Data Unit (Protocol Data Unit) PDU is replicated at the PDCP entity. Duplicate PDUs of the same PDCP entity are submitted to two different Radio Link Control (RLC) entities and are respectively associated to two different sidelink logical channels. Duplicate PDUs of the same PDCP entity are only allowed to be transmitted on different sidelink carriers.

The UE may activate or deactivate sidelink packet replication based on (pre)configuration. Sidelink packet replication is not available for transports with Rel-14 transport profiles. The per-packet reliability ((proseper-packet reliability, PPPR) value that supports sidelink data packet duplication can be configured through the PPPR threshold (pre-) configuration. Wherein, PPPR indicates the reliability of each data packet. For UE autonomous resource selection and For scheduled resource allocation, the UE shall perform sidelink packet replication for data with configured PPPR values until the packet replication configuration is canceled for these PPPR values. For scheduled resource allocation, the UE shall report via the sidelink buffer status (Buffer Status Report (BSR) reports the logical channel group identifier (ID), and determines the logical channel group for transmitting data based on the mapping relationship between the PPPR value and the logical channel group. The mapping between the PPPR value and the logical channel group can be configured by the eNB, and the PPPR value is determined by the The associated logical channel group ID in the sidelink BSR is reflected. A list of one or more PPPR values can be reported by a radio resource control (Radio Resource Control, RRC) connected UE in the sidelink UE information .

On the basis of LTE V2X, NR V2X is not limited to broadcast scenarios, but has been further expanded to unicast and multicast scenarios. -Similar to LTE V2X, NR V2X will also define the above-mentioned mode A/B two resource authorization modes; further, users may be in a mixed mode, that is, they can use mode A to obtain resources and at the same time can use Mode B acquires resources. The resource acquisition is indicated by means of sidelink authorization, that is, the sidelink authorization indicates the corresponding physical sidelink control channel (Physical Sidelink Control Channel, PSCCH) and physical sidelink shared channel (Physical Sidelink Shared Channel) , PSSCH) resource time-frequency location.

-Different from LTE V2X, NR V2X introduces HARQ retransmission based on feedback, not limited to unicast communication, but also multicast communication.

Same as LTE V2X, in NR V2X, because the vehicle system has continuous power supply, power efficiency is not the main issue, but the delay of data transmission is the main issue, so the system design requires terminal equipment to perform continuous transmission and reception.

Currently, NR V2X does not support multi-carrier mechanisms, so multi-carrier solutions such as data packet replication cannot be applied to improve the reliability of data transmission.

In order to facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions of the present application are described in detail below through specific examples. As optional solutions, the above related technologies may be combined with the technical solutions of the embodiments of the present application in any combination, and all of them belong to the protection scope of the embodiments of the present application. The embodiment of the present application includes at least part of the following content.

The data transmission method provided in the embodiment of the present application is shown in Figure 4, including:

S401. The first terminal copies a data packet to obtain a first data packet and a second data packet.

The first terminal performs data packet replication at the PDCP layer to obtain the first data packet and the second data packet, wherein the first data packet is the copied data packet, which can be understood as the original data packet, and the second data packet is the copied original data The data package obtained by the package can be understood as a copy data package.

S402. The first terminal sends the first data packet and the second data packet to the second terminal through the side link SL, the first data packet is sent through the first carrier, and the second data packet The packets are sent over a second carrier, the first carrier being the same as or different from the second carrier.

Optionally, the first terminal sends the first data packet and the second data packet to the second terminal through the same carrier.

In an example, the first terminal sends the first data packet and the second data packet to the second terminal through carrier 1.

Optionally, the first terminal sends the first data packet and the second data packet to the second terminal through two carriers.

In an example, the first terminal sends the first data packet to the second terminal through the carrier 1, and sends the second data packet to the second terminal through the carrier 2.

The embodiment of the present invention also provides a data transmission method, as shown in FIG. 5, including:

S501. The second terminal receives the first data packet and the second data packet sent by the first terminal through the SL.

The first data packet and the second data packet are obtained by duplicating data packets by the first terminal; the first data packet is received through a first carrier, the second data packet is received through a second carrier, and the The first carrier is the same as or different from the second carrier.

Optionally, the first terminal performs a data packet copy function at the PDCP layer to obtain the first data packet and the second data packet, wherein the first data packet is a copied data packet, which can be understood as an original data packet, and the second data packet A package is a copied data package, which can be understood as a copied data package.

Optionally, the second terminal receives the first data packet and the second data packet through the same carrier.

In an example, the second terminal receives the first data packet and the second data packet sent by the first terminal through carrier 1.

Optionally, the first terminal receives the first data packet and the second data packet through two carriers.

In an example, the second terminal receives the first data packet sent by the first terminal through the carrier 1, and receives the second data packet sent by the second terminal through the carrier 2.

In some embodiments, the conditions for the first terminal to perform packet duplication include at least one of the following:

Condition 1. The packet copy function is activated;

Condition 2: A first bearer configuration is configured, and the first bearer configuration is used to indicate a first bearer and/or a second bearer, the first bearer is a bearer for sending the first data packet, and the second bearer a bearer for sending the second data packet;

Condition 3: The first QoS information is sent, and the first QoS information has a high reliability requirement.

In an example, when condition one is met, the first terminal performs packet duplication.

In an example, when condition one and condition three are met, the first terminal performs packet duplication.

In an example, when condition 1, condition 2 and condition 3 are met, the first terminal performs packet duplication.

For condition one, the first terminal supports the data packet copy function, that is, the first terminal has the ability to copy data packets, but when the data packet copy function is not activated, the data packet copy is not performed, and when the data packet copy function is activated, There is a possibility of packet duplication at the first terminal.

For the third condition, when a data packet needs to transmit specific QoS information requiring high reliability, that is, the first QoS information, the first terminal may perform a data packet copy function on the current data packet; otherwise, no data packet copy is performed.

Here, the first QoS information includes at least one of the following: QoS Class Identifier (QoS Class Identifier, QCI), allocation and retention priority (Allocation and Retention Priority, ARP), guaranteed bit rate (Guaranteed Bit Rate, GBR), maximum bit rate Rate (MaximumBitRate, MBR) and other information.

Here, the reliability requirement of the specific QoS information with high reliability requirement is higher than the specified reliability requirement threshold.

In some embodiments, the manner in which the packet copy function is activated includes one of the following:

The first terminal is in a first state, and the first information satisfies an activation condition; optionally, the first state is a radio resource control RRC idle state or an RRC deactivated state;

The first terminal is in the second state, and receives first indication information from a network device; the first indication information is used to instruct the first terminal to activate the data packet copy function, and optionally, the second The state is the RRC connection state.

When the first terminal is in the RRC idle (idle) state or the RRC deactivation (inactive) state, the first terminal judges whether the first information satisfies the activation condition, and when the first information satisfies the activation condition, the first terminal activates the data packet copy function.

In some embodiments, the first terminal judges whether the first information satisfies an activation condition based on the first information and second information, and the second information is a threshold value corresponding to the first information.

The first terminal determines whether the first information satisfies the activation condition according to the first information and the threshold value corresponding to the first information.

In some embodiments, the first information includes at least one of the following:

Reliability, Channel Busy Ratio (CBR), Reference Signal Received Power (RSRP).

Optionally, the first terminal is in a unicast scenario, and the first information includes RSRP.

In this embodiment of the present application, when the first information includes information, the second information includes a threshold value corresponding to the information.

Taking the first information including Reliability as an example, the second information includes: a threshold value corresponding to Reliability, that is, a Reliability threshold value.

Taking the first information including CBR as an example, the second information includes: a threshold corresponding to the CBR, that is, a CBR threshold.

Taking the first information including RSRP as an example, the second information includes: a threshold value corresponding to the RSRP, that is, an RSRP threshold value.

Taking the first information including CBR and RSRP as an example, the second information includes: a threshold value corresponding to CBR, that is, a CBR threshold value, and a threshold value corresponding to RSRP, that is, an RSRP threshold value.

Taking the first information including Reliability, CBR and RSRP as an example, the second information includes: the threshold corresponding to Reliability is the Reliability threshold, the threshold corresponding to CBR is the CBR threshold, and the threshold corresponding to RSRP is RSRP threshold.

In some embodiments, the activation condition includes at least one of the following:

The reliability is less than the reliability threshold;

The channel busy rate is greater than the channel busy rate threshold;

RSRP is smaller than the RSRP threshold.

When the first information includes reliability, the activation condition includes: the reliability is less than a reliability threshold, and when the reliability is less than the reliability threshold, the first terminal activates the data packet copy function.

When the first information includes CBR, the activation condition includes: the CBR is greater than the CBR threshold, and when the CBR is greater than the CBR threshold, the first terminal activates the data packet copy function.

When the first information includes RSRP, the activation condition includes: the RSRP is smaller than the RSRP threshold, and when the RSRP is smaller than the RSRP threshold, the first terminal activates the data packet copy function.

When the first information includes CBR and RSRP, the activation conditions include: CBR is greater than the CBR threshold, and RSRP is less than the RSRP threshold. When the CBR is greater than the CBR threshold and the RSRP is less than the RSRP threshold, the first terminal activates packet replication Function.

When the first information includes reliability, CBR and RSRP, the activation conditions include: the reliability is less than the reliability threshold, the CBR is greater than the CBR threshold, and the RSRP is less than the RSRP threshold. When the reliability is less than the reliability threshold, If the CBR is greater than the CBR threshold and the RSRP is less than the RSRP threshold, the first terminal activates the data packet replication function.

In some embodiments, the manner of configuring the second information includes: configuring, by the network device, for the first terminal through a first message.

The second information is configured by the network device for the first terminal.

In this embodiment of the present application, the first information used by the first terminal to determine whether to activate the packet copy function may be determined by the first terminal, or may be determined by the second information configured by the network device to the first device.

In the case where the first information used by the first terminal to determine whether to activate the data packet copy function is determined by the second information configured by the network device to the first device, the second information configured by the network device to the first terminal includes a Reliability threshold and CBR threshold, the terminal device judges whether to activate the data packet replication function based on Reliability, CBR, Reliability threshold, and CBR threshold.

In some embodiments, the network device configures the first terminal through a first message.

In some embodiments, the first message includes one of the following:

A system information block (System Information Block, SIB) message broadcast by the network device;

A pre-configuration message sent by the network device.

Optionally, the first message includes: an SIB message.

In an example, the second information includes: a threshold corresponding to Reliability, namely the Reliability threshold, a threshold corresponding to CBR, namely the CBR threshold, and a threshold corresponding to RSRP, namely the RSRP threshold. The first terminal receives the SIB message sent by the network device, and the SIB message includes the following information: a Reliability threshold, a CBR threshold, and an RSRP threshold.

Optionally, the first message includes: a preconfiguration message.

In an example, the second information includes: a Reliability threshold and an RSRP threshold. The first terminal receives the pre-configuration message sent by the network device, and the pre-configuration message includes the following information: Reliability threshold and RSRP threshold.

Optionally, the first message includes: an SIB message and a preconfiguration message.

In an example, the second information includes: a Reliability threshold and an RSRP threshold. The first terminal receives the SIB message and the pre-configuration message sent by the network device, where the SIB message includes: a Reliability threshold, and the pre-configuration message includes: an RSRP threshold.

When the first terminal is in the RRC connected (connected) state, the first terminal has established an RRC connection with the network device, and the first terminal receives first indication information sent by the network device based on the established RRC connection, and the first After receiving the first indication information, the terminal activates the data packet copy function in response to the first indication information.

In some embodiments, before the first terminal receives the first indication information sent by the network device, the method further includes:

The first terminal sends second QoS information to the network device, where the second QoS information is used by the network device to determine the first indication information.

Optionally, the second QoS information may include at least one of the following information: information such as QCI, ARP, and GBR.

In this embodiment of the present application, the first QoS information and the second QoS information may be the same or different.

The first terminal sends the second QoS information to the network device, the network device receives the second QoS information, determines whether the first terminal activates the data packet copy function according to the received second QoS information, and determines whether the first terminal can activate the data packet copy function. In this case, the network device sends the first indication information to the first terminal.

Optionally, when the network device determines that the first terminal cannot activate the data packet copy function, it sends a notification message to the first terminal to indicate that the first terminal cannot activate the data packet copy function. Optionally, the reason why the first terminal cannot activate the data packet copy function is carried in the notification message.

In some embodiments, the first terminal receives the first bearer configuration configured by the network device, the first bearer configuration is used to indicate the first bearer and the second bearer, and the first bearer is the bearer for sending the first data packet A bearer, where the second bearer is a bearer for sending the second data packet.

The first bearer is a bearer for transmitting the first data packet, that is, an original bearer; the second bearer is a bearer for transmitting a second data packet, that is, a duplicate bearer. Here, the information indicating the first bearer in the first bearer configuration is called first bearer information, and the information indicating the second bearer in the first bearer configuration is called second bearer information.

Optionally, the first bearer configuration indicates the first bearer, and in this case, the first bearer configuration includes the first bearer information.

Optionally, the first bearer configuration indicates the second bearer, and in this case, the first bearer configuration includes the second bearer information.

Optionally, the first bearer configuration indicates the first bearer and the second bearer. In this case, the first bearer configuration includes the first bearer information and the second bearer information.

In this embodiment of the present application, in addition to configuring the first bearer configuration for the terminal device, the network device may also configure bearer information corresponding to other bearers for the terminal device.

When the bearer used by the first terminal to send the first data packet is bearer 1, and the bearer used to send the second data packet is bearer 2, the network device configures the configuration information of bearer 1 and bearer 2 for the first terminal , configuration information of other bearers may also be configured to the first terminal.

In some embodiments, the first bearer configuration includes bearer information, and the bearer information includes at least one of the following:

Bearer ID;

RLC layer configuration;

Media access control (Medium Access Control, MAC) layer configuration;

available carrier information, the available carrier information indicating a set of available carriers, the set of available carriers including at least one available carrier;

First resource pool information, where the first resource pool information indicates a resource pool set corresponding to the available carrier, and the resource pool set includes at least one resource pool;

a bearer attribute, the bearer attribute is used to indicate that the bearer information is first bearer information or second bearer information, the first bearer information is used to indicate the first bearer, and the second bearer information is used to indicate the Describe the second bearer.

Optionally, the available carrier information is located in the MAC layer configuration.

In some embodiments, the set of available carriers in the first bearer information and the set of available carriers in the second bearer information are orthogonal or non-orthogonal.

Taking the orthogonality between the set of available carriers in the first bearer information and the set of available carriers in the second bearer information as an example, the set of available carriers in the first bearer information, that is, the first set of carriers and the set of available carriers in the second bearer information The set, that is, the second set of carriers does not include the same available carrier.

In an example, the first carrier set includes: component carrier (Component Carrier, CC) 1, CC2 and CC3. The first carrier set includes: CC4, CC5.

Here, the first carrier that sends the first data packet is a carrier in the first carrier set, the second carrier that sends the second data packet is a carrier in the second carrier set, and the first carrier is different from the second carrier. carrier, the first terminal sends the first data packet and the second data packet to the second terminal through two different carriers.

Taking the non-orthogonal set of available carriers in the first bearer information and the set of available carriers in the second bearer information as an example, the first set of carriers and the second set of carriers include the same available carriers.

In an example, the first carrier set includes: CC1, CC2 and CC3. The first carrier set includes: CC3 and CC5.

Here, the first carrier that sends the first data packet is a carrier in the first carrier set, and the second carrier that sends the second data packet is a carrier in the second carrier set. When the first carrier and the second carrier are the first carrier A carrier set is the same carrier as the second carrier set, and the first terminal sends the first data packet and the second data packet to the second terminal through one carrier. When the first carrier and the second carrier are different carriers in the first carrier set and the second carrier set, the first data packet and the second data packet are sent to the second terminal through the two different carriers.

In some embodiments, the resource pool set in the first bearer information is orthogonal to the resource pool set in the second bearer information.

Here, the resource pool set in the first bearer information is the resource pool set corresponding to the available carrier in the first carrier set, that is, the first resource pool set, and the resource pool set in the first bearer information is the available carrier in the second carrier set The corresponding resource pool set is the second resource pool set. The resource pool in the first resource pool set, that is, the first resource pool is used for sending the first data packet, and the resource pool in the second resource pool set, that is, the second resource pool, is used for sending the second data packet.

When the first terminal sends the first data packet through the resources in the first resource pool and sends the second data packet through the resources in the second resource pool, the resources for sending the first data packet and the resources for sending the second data packet are exactly the same pay.

In some embodiments, the configuration of the first bearer configuration includes at least one of the following:

When the first terminal is in a first state, the network device sends a SIB message, and the first state is an RRC idle state or an RRC deactivated state;

When the first terminal is in the first state, the network device is pre-configured;

When the first terminal is in the second state, the network device sends it through dedicated signaling, and the second state is an RRC connection state.

In some embodiments, the method also includes:

The first terminal determines the first bearer according to reliability;

The first terminal determines the second bearer according to a first mapping relationship, where the first mapping relationship is a mapping relationship between the first bearer and the second bearer.

The first terminal is configured with an association relationship between the reliability and the bearer, and the first terminal determines the bearer associated with the reliability as the first bearer according to the reliability.

After determining the first bearer, the first terminal determines the bearer having the first mapping relationship with the first bearer as the second bearer.

Here, in the association relationship or mapping relationship between the reliability and the bearer, the bearer is identified by the bearer identifier.

After determining the first bearer and the second bearer, the terminal device determines the bearer configuration information of the first bearer and the bearer configuration information of the second bearer based on the first bearer configuration, and sends the second bearer based on the first bearer indicated by the bearer configuration information of the first bearer. A data packet, instructing the second bearer to send the second data packet based on the bearer configuration information of the second bearer.

In some embodiments, the first mapping relationship is configured by the network device.

In some embodiments, before S401, the method further includes:

The first terminal sends second indication information to the second terminal, where the second indication information is used to indicate that the data packet copy function is activated or deactivated.

At this time, the second terminal receives second indication information sent by the first terminal, where the second indication information is used to indicate that the data packet copy function is activated or deactivated.

When the first terminal satisfies the conditions for data packet copying and before the data packet copying function is not activated, the first terminal sends the second indication information indicating that the data packet copying function is activated to the second terminal to notify the second terminal that the first terminal will Activate the packet copy function. At this time, the second terminal indicates that the data packet copy function is activated through the second indication information to know that the first terminal will activate the data packet copy function.

Alternatively, before the first terminal deactivates the data packet copy function, it sends second indication information indicating that the data packet copy function is deactivated to the second terminal, so as to notify the second terminal that the first terminal will deactivate the data packet copy function. At this time, the second indication information indicating that the data packet copy function is deactivated by the second terminal knows that the first terminal will deactivate the data packet copy function.

In some embodiments, the transmission manner of the second indication information includes at least one of the following:

Transmission via PC5 Radio Resource Control (RRC);

Transmission via SL-MAC Control Element (CE);

Transmitted through Sidelink Control Information (SCI).

In some embodiments, the second indication information includes at least one of the following:

Activation/deactivation indication;

An identifier of a first bearer, where the first bearer is a bearer for sending the first data packet;

An identifier of a second bearer, where the second bearer is a bearer for sending the second data packet;

an identification of the first carrier;

The identity of the second carrier.

In some embodiments, when the first indication information indicates that the packet copy function is activated, the method further includes:

The first terminal sends a first bearer configuration to the second terminal, the first bearer configuration is used to indicate a first bearer and a second bearer, the first bearer is a bearer for sending the first data packet, The second bearer is a bearer for sending the second data packet.

Here, in the case where the first indication information indicates that the packet copy function is activated, the method further includes:

The second terminal receives the first bearer configuration sent by the first terminal.

For the description of the first bearer configuration sent by the first terminal to the second terminal, refer to the description of the first bearer configuration configured by the network device to the first terminal, which will not be repeated here.

In some embodiments, the method further includes: the second terminal sending feedback information in response to the second indication information to the first terminal.

At this time, the first terminal receives feedback information sent by the second terminal in response to the second indication information.

Optionally, the manner of receiving the feedback information includes at least one of the following:

Received via PC5RRC;

Receive through SL-MAC CE;

Receipt via SCI;

Received through the Physical Sidelink Feedback Channel (PSFCH).

In some embodiments, the feedback information instructs the second terminal to accept or reject the activation of the data packet copy function by the first terminal.

When the feedback information indicates that the second terminal accepts activation of the data packet copy function by the first terminal, the first terminal activates the data packet copy function to perform data packet copy.

When the feedback information indicates that the second terminal refuses the first terminal to activate the data packet copy function, the first terminal does not activate the data packet copy function, and does not perform data packet copy.

In some embodiments, the method further includes: when the second terminal receives the second indication information, reporting fourth indication information to the network device; the fourth indication information is used to indicate that the network The device performs bearer configuration reconfiguration for the second terminal.

Optionally, when the second terminal correctly receives the second indication information, it reports the fourth indication information to the network device.

Optionally, the fourth indication information is used to indicate the first bearer configuration sent by the first terminal device to the second device, and the network device performs bearer configuration reconfiguration for the second terminal device according to the first bearer configuration implemented by the fourth indication information , to configure the bearer configuration applicable to the second terminal device for the second terminal device.

In some embodiments, when the reconfiguration of the network device fails, the feedback information indicates that the second terminal refuses the first terminal to activate the data packet copy function.

In the case of network device reconfiguration failure, the network device fails to reconfigure the bearer configuration corresponding to the first bearer configuration for the second terminal, and the second terminal will not be able to correctly receive the data packets sent by the first terminal in the first bearer configuration , the second terminal refuses the first terminal device to activate the data packet copy function.

In some embodiments, if the network device succeeds, the feedback information instructs the second terminal to accept the activation of the data packet copy function by the first terminal.

The network device successfully reconfigures the bearer configuration corresponding to the first bearer configuration for the second terminal, and the second terminal can correctly receive the first data packet and the second data packet sent by the first terminal based on the first bearer configuration based on the reconfigured bearer configuration , the second terminal accepts that the first terminal device activates the data packet copy function.

In some embodiments, the method also includes:

The second terminal receives the SL MAC CE sent by the first terminal.

In some embodiments, the method also includes:

The first terminal receives third indication information sent by the network device, where the third indication information is used to indicate whether the first terminal performs SL MAC CE replication.

When the third indication information indicates that the first terminal does not perform SL MAC CE replication, the first terminal does not perform SL MAC CE replication.

In some embodiments, when the third indication information indicates that the first terminal does not perform SL MAC CE replication, the method further includes:

The first terminal sends the first SL MAC CE to the second terminal.

At this time, the SL MAC CE received by the second terminal from the first terminal includes the first SL MAC CE.

If the first terminal determines not to perform SL MAC CE duplication based on the third indication information, the SL MAC CE duplication is not performed, and the SL MAC CE corresponding to the first data packet, that is, the first SL MAC CE is sent to the second terminal.

In some embodiments, the first SL MAC CE is multiplexed with the data of the first data packet or the data of the second data packet.

In the case where the first SL MAC CE and the data of the first data packet are multiplexed, the first terminal multiplexes the first SL MAC CE and the data of the first data packet in the first data packet. The second terminal determines the first SL MAC CE based on the first data packet.

In the case of multiplexing the data of the first SL MAC CE and the second data packet, the first terminal multiplexes the data of the first SL MAC CE and the second data packet in the second data packet. The second terminal determines the first SL MAC CE based on the second data packet.

In some embodiments, the first SL MAC CE multiplexes a first logical channel for sending, and the first logical channel is a logical channel that carries the first data packet or the second data packet.

In the case where the first SL MAC CE is multiplexed with the data of the first data packet, the first logical channel is a logical channel for transmitting the first data packet. The first terminal multiplexes the first logical channel to send the first data packet and the first SL MAC CE, and the second terminal multiplexes the first logical channel to receive the first data packet and the first SL MAC CE.

In the case where the first SL MAC CE is multiplexed with the data of the second data packet, the first logical channel is a logical channel for transmitting the second data packet. The first terminal multiplexes the first logical channel to send the second data packet and the first SL MAC CE, and the second terminal multiplexes the first logical channel to receive the second data packet and the first SL MAC CE.

When the third indication information instructs the first terminal to perform SL MAC CE replication, the first terminal performs SL MAC CE replication.

In some embodiments, when the third indication information indicates that the first terminal performs SL MAC CE duplication, the method further includes:

The first terminal performs SL MAC CE replication to obtain the first SL MAC CE and the second SL MAC CE;

The first terminal sends the first SL MAC CE and the second SL MAC CE to the second terminal.

At this time, the SL MAC CE received by the second terminal from the first terminal includes a first SL MAC CE and a second SL MAC CE, and the first SL MAC CE and the second SL MAC CE are passed SL MAC CE copied.

The first SL MAC CE is the copied SL MAC CE, which can be understood as the original SL MAC CE, and the second SL MAC CE is the SL MAC CE obtained by copying the original SL MAC CE, which can be understood as the copied SL MAC CE.

When the first terminal determines to perform SL MAC CE replication based on the third indication information, perform SL MAC CE replication to obtain the first SL MAC CE and the second SL MAC CE, and send the first SL MAC CE and the second SL MAC CE to the second terminal. The second terminal receives the first SL MAC CE and the second SL MAC CE.

In some embodiments, the first SL MAC CE and the second SL MAC CE are transmitted based on a second bearer configuration.

The first terminal sends the first SL MAC CE and the second SL MAC CE to the second terminal based on the second bearer configuration, and the second terminal receives the first SL MAC CE and the second SL MAC based on the second bearer configuration CE.

Optionally, the second bearer configuration transmission is configured by the network device.

In some embodiments, the second bearer configuration includes: first sending information and second sending information, the first sending information is sending information corresponding to the first SL MAC CE, and the second sending information is Corresponding to the sending information of the second SL MAC CE.

In some embodiments, the sending information indicates at least one of the following:

a set of transmit carriers, the set of transmit carriers comprising at least one transmit carrier;

an available resource pool on the sending carrier;

logical channel.

In some embodiments, where HARQ feedback is activated, the method further comprises:

The second terminal sends HARQ feedback to the first terminal.

At this time, the first terminal receives the HARQ feedback sent by the second terminal.

The HARQ feedback received by the first terminal indicates whether the second terminal successfully receives the first data packet and the second data packet, or indicates whether the first terminal needs to retransmit the first data packet and the second data packet.

In some embodiments, the transmission mode of the HARQ feedback includes at least one of the following:

Transmission mode 1. The first HARQ feedback is transmitted on the first resource, and the second HARQ feedback is transmitted on the second resource, the first resource is the feedback resource corresponding to the first data packet, and the first HARQ feedback is HARQ feedback for the first data packet, the second resource is a feedback resource corresponding to the second data packet, and the second HARQ feedback is HARQ feedback for the second data packet;

Transmission mode 2, transmitting the first HARQ feedback on the first resource;

Transmission manner 3: Transmit third HARQ feedback on the first resource, where the third HARQ feedback is HARQ feedback for the first data packet and the second data packet.

Here, the manner in which the second terminal sends the HARQ feedback includes at least one of the following:

Way A1: Send the first HARQ feedback on the first resource, and send the second HARQ feedback on the second resource, the first resource is the feedback resource corresponding to the first data packet, and the first HARQ feedback is For the HARQ feedback of the first data packet, the second resource is a feedback resource corresponding to the second data packet, and the second HARQ feedback is HARQ feedback for the second data packet;

Mode A2, sending the first HARQ feedback on the first resource;

Manner A3: Send third HARQ feedback on the first resource, where the third HARQ feedback is HARQ feedback for the first data packet and the second data packet.

At this time, the manner in which the first terminal receives the HARQ feedback includes at least one of the following:

Manner B1: receiving first HARQ feedback on a first resource, and receiving second HARQ feedback on a second resource, where the first resource is a feedback resource corresponding to the first data packet, and the first HARQ feedback is For the HARQ feedback of the first data packet, the second resource is a feedback resource corresponding to the second data packet, and the second HARQ feedback is HARQ feedback for the second data packet;

Way B2, receiving the first HARQ feedback on the first resource;

Manner B3: Receive third HARQ feedback on the first resource, where the third HARQ feedback is HARQ feedback for the first data packet and the second data packet.

In an example, the second terminal uses the method A1 to send the first HARQ feedback on the first resource, and sends the second HARQ feedback on the second resource. At this time, the first terminal uses the method B1 to receive the first HARQ feedback on the first resource. HARQ feedback, and receiving a second HARQ feedback on a second resource.

In an example, the second terminal only sends the first HARQ feedback on the first resource using manner A2, and the first terminal receives the first HARQ feedback on the first resource using manner B2.

In an example, the second terminal uses the method A3 to send the third HARQ feedback for the first data packet and the second data packet on the first resource. At this time, the first terminal uses the method B3 to receive the third HARQ feedback on the first resource. Three HARQ feedback.

In this embodiment of the present application, the second terminal may indicate the feedback manners of the foregoing multiple HARQ feedbacks.

In an example, the second terminal sends the data packet 1 and the data packet 1' using the manner A1, wherein the data packet 1' is a duplicate data packet corresponding to the data packet 1. At this time, the first terminal receives the data packet 1 and the data packet 1' based on the mode B1. The second terminal sends the data packet 2 and the data packet 2' using the manner A2, wherein the data packet 2' is a duplicate data packet corresponding to the data packet 2. At this time, the first terminal receives data packet 2 and data packet 2' based on manner B2.

In an example, the second terminal sends the data packet 3 and the data packet 3' using the mode A1, wherein the data packet 3' is a duplicate data packet corresponding to the data packet 3. At this time, the first terminal receives the data packet 3 and the data packet 3' based on the mode B1. The second terminal uses the mode A3 to send the data packet 4 and the data packet 4 ′, wherein the data packet 4 ′ is a duplicate data packet corresponding to the data packet 4 . At this time, the first terminal receives the data packet 4 and the data packet 4' based on the mode B3.

In an example, the second terminal sends the data packet 5 and the data packet 5 ′ in the manner A1, wherein the data packet 5 ′ is a duplicate data packet corresponding to the data packet 5 . At this time, the first terminal receives the data packet 5 and the data packet 5' based on the mode B1. The second terminal uses the mode A2 to send the data packet 6 and the data packet 6 ′, wherein the data packet 6 ′ is a duplicate data packet corresponding to the data packet 6 . At this time, the first terminal receives data packet 2 and data packet 2' based on manner B2. The second terminal uses the mode A3 to send the data packet 7 and the data packet 7 ′, wherein the data packet 7 ′ is a duplicate data packet corresponding to the data packet 7 . At this time, the first terminal receives the data packet 7 and the data packet 7' based on the mode B3.

The embodiment of the present application also provides a data transmission method, as shown in FIG. 6, including:

S601. The network device configures data packet replication configuration for the first terminal.

The data packet duplication configuration is used for the data packet duplication function of the first terminal, and the first data packet and the second data packet obtained based on the data packet duplication function are sent to the second terminal through the same or different carriers.

In some embodiments, the packet replication configuration includes at least one of the following:

second information, where the second information is a threshold value corresponding to the first information, and the second information is used by the first terminal to determine whether to activate the data packet copy function;

first indication information, where the first indication information is used to instruct the first terminal to activate the data packet copy function;

First bearer configuration, where the first bearer configuration is used to indicate a first bearer and/or a second bearer, the first bearer is a bearer for sending the first data packet, and the second bearer is for sending the second bearer The bearer of the second data packet,

A first mapping relationship, where the first mapping relationship is a mapping relationship between the first bearer and the second bearer.

For the second information, in the first state, the first terminal judges whether to activate the data packet copy function based on the first information and the second information. Optionally, the first state is a radio resource control RRC idle state or an RRC deactivated state.

In some embodiments, the second information includes one of the following: a threshold value corresponding to reliability, a threshold value corresponding to CBR, and a threshold value corresponding to RSRP.

Correspondingly, the first information includes at least one of the following:

Reliability, CBR, RSRP.

The reliability is less than the reliability threshold;

The channel busy rate is greater than the channel busy rate threshold;

RSRP is smaller than the RSRP threshold.

In this embodiment of the present application, the second information used by the first terminal to determine whether to activate the packet copy function may be all or part of the second information configured by the network device for the first terminal.

In an example, the second information configured by the network device for the first terminal includes: a reliability threshold and an RSRP threshold, and the first terminal uses the reliability threshold and the RSRP threshold to determine whether to activate the data packet replication function .

In an example, the second information configured by the network device for the first terminal includes: a reliability threshold and an RSRP threshold, and the first terminal uses the reliability threshold to determine whether to activate the data packet replication function.

In an example, the second information configured by the network device for the first terminal includes: a reliability threshold, a CBR threshold, and an RSRP threshold, and the first terminal uses the reliability threshold and the RSRP threshold to determine whether Activate the packet copy function.

In an example, the second information configured by the network device for the first terminal includes: a reliability threshold, a CBR threshold, and an RSRP threshold, and the first terminal uses the reliability threshold, the CBR threshold, and the RSRP threshold. The threshold value determines whether to activate the data packet copy function.

In some embodiments, the configuration of the second information includes:

The network device configures the first terminal through the first message.

In some embodiments, the first message includes one of the following:

The SIB message broadcast by the network device;

A pre-configuration message sent by the network device.

In this embodiment of the present application, different threshold values can be configured through the same message or different messages.

In an example, the reliability threshold and the CBR threshold are configured through SIB messages.

In an example, the reliability threshold is configured through the SIB message, and the CBR threshold and the RSRP threshold are configured through the pre-configuration message.

In some embodiments, the method also includes:

The network device receives the second QoS information sent by the first terminal, where the second QoS information is used to determine the first indication information.

Optionally, the second QoS information is service QoS information, which may include at least one of the following information: QCI, ARP, GBR and other information.

61. The method according to claim 60, wherein the second QoS information is also used by the network device to determine whether the second bearer information in the first bearer configuration needs to be configured for the first terminal, so The second bearer information is used to indicate the second bearer.

In the case where the data packet configuration includes the first bearer configuration, the first bearer configuration includes bearer information, and the bearer information includes at least one of the following:

Bearer ID;

Radio link control RLC layer configuration;

Media access control MAC layer configuration;

In an example, the first carrier set includes: CC1, CC2 and CC3. The first carrier set includes: CC4, CC5.

When the first terminal is in the second state, the network device sends it through dedicated signaling, and the second state is an RRC connected state.

In some embodiments the method also includes:

The network device receives fourth indication information sent by the second terminal device; the second indication information is used to instruct the network device to reconfigure the first bearer configuration for the second terminal.

When the first terminal determines that the data packet copy function needs to be activated, it sends second indication information to the second terminal, where the second indication information is used to indicate that the data packet copy function is activated. When the second terminal receives the second indication information indicating that the packet copy function is activated, it sends fourth indication information to the network device, where the fourth indication information is used to indicate that the network device is the second The terminal performs bearer configuration reconfiguration.

When the network device receives the fourth indication information, it reconfigures the bearer configuration to the second terminal based on the first bearer configuration.

Optionally, when the reconfiguration of the network device is successful, the network device sends the reconfigured bearer configuration to the second terminal, and the second terminal sends an indication to the first terminal based on the received reconfigured bearer configuration to accept the packet copy function Activated feedback information.

Optionally, when the reconfiguration of the network device fails, the network device sends information indicating the reconfiguration failure to the second terminal or does not send information to the second terminal, and the second terminal receives the information indicating the reconfiguration failure or If the reconfigured bearer configuration is not received within the set time period, feedback information indicating that the function of refusing to copy the data packet is activated is sent to the first terminal.

In some embodiments, the network device sends third indication information to the first terminal, where the third indication information is used to indicate whether the first terminal performs SL MAC CE replication.

Optionally, when the third indication information received by the first terminal indicates that the first terminal performs SL MAC CE replication, the first terminal performs SL MAC CE replication to obtain the first SL MAC CE and the second SL MAC CE, and The first SL MAC CE and the second SL MAC CE are sent to the second terminal.

Optionally, when the third indication information received by the first terminal indicates that the first terminal does not perform SL MAC CE replication, the first terminal does not perform SL MAC CE replication, and sends the first SL MAC CE to the second terminal.

In some embodiments, the method further includes: the network device configuring a second bearer configuration to the first terminal, and the second bearer configuration is used to indicate the transmission of the first SL MAC CE and the second SL MAC CE , the first SL MAC CE and the second SL MAC CE are obtained by duplicating the SL MAC CE of the first terminal.

an available resource pool on the sending carrier;

logical channel.

In the following, the data transmission method provided by the embodiment of the present application is further described.

The terminal copies the data packet at the PDCP layer, and delivers the data packet to the MAC layer through two RLC entities.

When the terminal copies the data packet and sends the data packet, it may also be based on one or more of the following examples.

Example 1. The base station configures the sending terminal to activate the packet copy function

The base station configures auxiliary information for the terminal, and the auxiliary information is used to help the sending terminal determine whether to activate the data packet copy function.

If the terminal is in RRC idle/inactive, the auxiliary information can be included in the SIB message broadcast by the base station, or in the pre-configuration message, and includes at least one of the following:

The threshold value of reliability (Reliability) in the QoS information;

A combination of the Reliability threshold in the QoS information and the CBR threshold of the resource pool;

Combination of the Reliability threshold in QoS and the unicast RSRP threshold.

In an example, the auxiliary information includes a threshold value of Reliability, and the sending terminal judges whether to activate a packet duplication function (packet duplication) according to the QoS information of its own service.

In an example, the auxiliary information includes a combination of the Reliability threshold and the CBR threshold of the resource pool, that is, the Reliability-CBR threshold, and the sending terminal judges according to its own QoS information and the CBR measurement information for the resource pool Whether to activate packet duplication.

In an example, the auxiliary information includes a combination of the Reliability threshold and the unicast RSRP threshold, that is, the Reliability-RSRP threshold, and the sending terminal determines whether to activate packet duplication according to its own QoS information and the RSRP measurement value.

If the terminal is in RRC connected, the terminal reports to the base station that the sidelinkUEInformation includes the QoS information of its own business, and the base station indicates to the terminal whether to activate packet duplication. The base station will configure auxiliary information for the terminal to help the sending terminal determine whether to activate the packet duplication function. Specifically,

If the terminal is in RRC idle/inactive, the auxiliary information can be included in the SIB message broadcast by the base station, or in the pre-configuration message, and include at least one of the following:

Reliability threshold value in QoS, the terminal judges whether to activate packet duplication according to the QoS information of its own business

The combined threshold value of Reliability in QoS and resource pool CBR, that is, the Reliability-CBR threshold value, the terminal determines whether to activate packet duplication according to its own QoS information and the CBR measurement information for the resource pool

The combined threshold value of Reliability and unicast RSRP in QoS, that is, the Reliability-RSRP threshold value, the terminal judges whether to activate packet duplication according to its own QoS information and RSRP measurement value information

If the terminal is in RRC connected, the terminal reports a Sidelink UE Information (SUI) message to the base station, wherein the SUI message contains the QoS information of its own service, and the base station indicates to the terminal whether to activate based on the received QoS information packet duplication.

Example 2. The base station configures original data stream bearer and duplicate data stream bearer

The original data stream bearer, that is, the original bearer is a bearer for sending the original data stream, and the duplicate data stream bearer, that is, the duplicate bearer is a bearer for sending the duplicate data stream.

When the terminal is in the RRC idle/inactive state, the base station configures the bearer of the original data flow and the bearer of the copied data flow to the sending terminal through the SIB or a pre-configuration message at the same time.

When the terminal is in the RRC connected state, the base station configures the original data flow bearer and the duplicate data flow bearer to the sending terminal through dedicated signaling at the same time.

The bearer configuration (including the original bearer configuration for the original data stream bearer and the duplicate bearer configuration for the duplicate data stream bearer) may include at least one of the following information:

- bearer configuration ID;

- RLC layer configuration;

- MAC layer configuration;

- List of available carriers; this list can be orthogonal or non-orthogonal for original and duplicate bearers.

- A resource pool set corresponding to an available carrier; for the original bearer and the duplicate bearer, the set can only be orthogonal.

- bearer attribute, that is, whether the current bearer belongs to the original bearer or the copied bearer.

For the resource pool set corresponding to the available carrier, in an example, the resource pool set can be configured as: CC1 (rp index 0, 1, 2), CC2 (rp index 0, 1, 2), representing the resource pool corresponding to the available carrier CC1 The set includes resource pools with indexes 0, 1, and 2 respectively, and the resource pool set corresponding to the available carrier CC2 includes resource pools with indexes 0, 1, and 2 respectively.

Additionally, it may be considered that the base station configures the mapping relationship between the original bearer and the duplicate bearer for the sending terminal.

When the sending terminal receives the bearer configuration and determines to activate packet duplication, it selects the duplicate bearer according to the original bearer corresponding to the QoS information (which can be Reliability) and the mapping relationship between the original bearer and the duplicate bearer, and sends the original data packet according to the bearer configuration with copy packets.

When the sending terminal is in RRC connected, the sending terminal reports the SUI (including the service QoS information), the CBR measurement value of the resource pool and the RSRP measurement information of the unicast service to the base station, and the base station judges whether to activate the packet for the sending terminal based on the received information Duplication, and whether the bearer configuration needs to include the configuration information of the duplicate bearer, that is, the duplicate bearer configuration.

Example 3: In the unicast connection scenario, after the sending terminal activates packet duplication, it sends an instruction message to the receiving terminal

When the sending end activates packet duplication, the sending end may send packet duplication activation indication information to the receiving end.

The packet duplication activation indication information can be sent in at least one of the following ways:

- PC5-RRC;

-SL-MAC CE;

- sidelink control information (sidelink control information, SCI)).

After receiving the packet duplication activation indication information, the receiving end may optionally send feedback information to the sending end. The feedback information can be sent in at least one of the following ways:

- PC5-RRC;

-SL-MAC CE;

-SCI;

-PSFCH;

When the feedback information is sent through the PSFCH, it can be carried in the HARQ feedback.

Example 4: How does the sending terminal send SL-MAC CE

If the sending terminal copies the SL-MAC CE, the base station configures the sending information of the SL-MAC CE copy for the terminal.

The sending information includes at least one of the following:

- Transmit carrier list of original/copy MAC CE

- Original/duplicate MAC CE transmission carrier list and available resource pool index on each carrier

-The logical signal (Logical Channel, LC) ID corresponding to the original/copy MAC CE.

If the sending terminal does not copy the SL-MAC CE, the sending terminal can only multiplex the SL-MAC CE with the original or copied data stream, and when determining the logical channel priority (Logical Channel Prioritization, LCP) , if the SL-MAC CE needs to be sent, the MAC entity can only multiplex the SL-MAC CE with the data on the logical channel carrying the original data stream or the duplicate data stream.

Example 5: How does the receiving terminal perform HARQ feedback feedback

If the sending terminal activates packet duplication and sends data packets and HARQ feedback is activated, the receiving end can perform HARQ feedback in at least one of the following ways:

- The receiving end can separately perform HARQ feedback on the original data packet and the duplicate data packet on PSFCH resources corresponding to the original data packet and the duplicate data packet;

- The receiving end can only perform HARQ feedback on the original data packet on the PSFCH resource corresponding to the original data packet;

- The receiving end can only perform HARQ feedback on the PSFCH resource corresponding to the original data packet, and the feedback information can include whether the original data packet is correctly received and whether the duplicate data packet is correctly received.

In Example 3, optionally, when the receiving end correctly receives the packet duplication indication information from the sending end, the receiving end needs to report to the base station to obtain bearer reconfiguration.

Optionally, if the reconfiguration of the base station fails, the receiving end may feed back to the sending end the denial of packet duplication activation.

The data transmission method provided in the embodiment of the present application can solve how the transmitting terminal performs data packet copy transmission under the multi-carrier mechanism, and improves the reliability of data transmission.

The preferred embodiments of the present application have been described in detail above in conjunction with the accompanying drawings. However, the present application is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present application, various simple modifications can be made to the technical solutions of the present application. These simple modifications all belong to the protection scope of the present application. For example, the various specific technical features described in the above specific implementation manners can be combined in any suitable manner if there is no contradiction. Separately. As another example, any combination of various implementations of the present application can also be made, as long as they do not violate the idea of the present application, they should also be regarded as the content disclosed in the present application. For another example, on the premise of no conflict, the various embodiments described in this application and/or the technical features in each embodiment can be combined with the prior art arbitrarily, and the technical solutions obtained after the combination should also fall within the scope of this application. protected range.

It should also be understood that in the various method embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the order of execution, and the order of execution of the processes should be determined by their functions and internal logic, and should not be used in this application. The implementation of the examples constitutes no limitation. In addition, in this embodiment of the application, the terms "downlink", "uplink" and "sidelink" are used to indicate the transmission direction of signals or data, wherein "downlink" is used to indicate that the transmission direction of signals or data is sent from the station The first direction to the user equipment in the cell, "uplink" is used to indicate that the signal or data transmission direction is the second direction sent from the user equipment in the cell to the station, and "side line" is used to indicate that the signal or data transmission direction is A third direction sent from UE1 to UE2. For example, "downlink signal" indicates that the transmission direction of the signal is the first direction. In addition, in the embodiment of the present application, the term "and/or" is only an association relationship describing associated objects, indicating that there may be three relationships. Specifically, A and/or B may mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship.

Fig. 7 is a schematic diagram of the first structural composition of the data transmission device provided by the embodiment of the present application, which is applied to the first terminal. As shown in Fig. 7, the data transmission device 700 includes:

The first copying unit 701 is configured to copy a data packet to obtain a first data packet and a second data packet;

The first sending unit 702 is configured to send the first data packet and the second data packet to the second terminal through the side link SL, the first data packet is sent through the first carrier, and the second data packet The packets are sent over a second carrier, the first carrier being the same as or different from the second carrier.

The packet copy function is activated;

A first bearer configuration is configured, and the first bearer configuration is used to indicate a first bearer and/or a second bearer, the first bearer is a bearer for sending the first data packet, and the second bearer is for sending the The bearer of the second data packet;

Sending first quality of service (QoS) information, where the first QoS information has a high reliability requirement.

The first terminal is in a first state, and the first information satisfies an activation condition; the first state is a radio resource control RRC idle state or an RRC deactivated state;

The first terminal is in a second state and receives first indication information from a network device; the first indication information is used to instruct the first terminal to activate the data packet copy function, and the second state is RRC connection state.

In some embodiments, device 700 also includes:

The first judging unit is configured to judge whether the first information satisfies the activation condition based on the first information and second information, where the second information is a threshold value corresponding to the first information.

In some embodiments, the first information includes one of the following:

Reliability, channel busy rate CBR, reference signal received power RSRP.

The reliability is less than the reliability threshold;

The channel busy rate is greater than the channel busy rate threshold;

RSRP is smaller than the RSRP threshold.

In some embodiments, the configuration of the second information includes:

The network device configures the first terminal through the first message.

In some embodiments, the first message includes one of the following:

A system information block SIB message broadcast by the network device;

A pre-configuration message sent by the network device.

In some embodiments, the first sending unit 702 is further configured to:

Before the first terminal receives the first indication information sent by the network device, send second QoS information to the network device, where the second QoS information is used by the network device to determine the first indication information.

In some embodiments, the second QoS information is also used by the network device to determine whether second bearer information needs to be configured for the first terminal, the second bearer information is used to indicate a second bearer, and the first The second bearer is a bearer for sending the second data packet.

In some embodiments, device 700 also includes:

The first receiving unit is configured to receive a first bearer configuration configured by a network device, the first bearer configuration is used to indicate a first bearer and a second bearer, the first bearer is a bearer for sending the first data packet, The second bearer is a bearer for sending the second data packet.

Bearer ID;

Radio link control RLC layer configuration;

Media access control MAC layer configuration;

In some embodiments, the set of available carriers in the first bearer information and the set of available carriers in the second bearer information are orthogonal or non-orthogonal; and/or

The resource pool set in the first bearer information is orthogonal to the resource pool set in the second bearer information.

In some embodiments, the device 700 further includes: a first determination unit configured to:

determining the first bearer according to reliability;

Determine the second bearer according to a first mapping relationship, where the first mapping relationship is a mapping relationship between the first bearer and the second bearer.

In some embodiments, the first sending unit 702 is further configured to:

Sending second indication information to the second terminal, where the second indication information is used to indicate that the data packet copy function is activated or deactivated.

Transmission via PC5RRC;

Transmission via sidelink SL-MAC CE;

Transmission of control information SCI via the sidelink.

Activation/deactivation indication;

an identification of the first carrier;

The identity of the second carrier.

In some embodiments, the first sending unit 701 is further configured to send a first bearer configuration to the second terminal, where the first bearer configuration is used to indicate a first bearer and a second bearer, and the first bearer is A bearer for sending the first data packet, and the second bearer is a bearer for sending the second data packet.

In some embodiments, device 700 also includes:

The second receiving unit is configured to receive feedback information sent by the second terminal in response to the second indication information.

In some embodiments, the transmission manner of the feedback information includes at least one of the following:

Transmission via PC5RRC;

Transmission via SL-MAC CE;

Transmission via SCI;

Transmission over the Physical Sidelink Feedback Channel PSFCH.

In some embodiments, the apparatus 700 further includes: a third receiving unit configured to receive third indication information sent by the network device, where the third indication information is used to indicate whether the first terminal performs SL MAC CE replication .

The first terminal sends the first SL MAC CE to the second terminal.

In some embodiments, the first SL MAC CE multiplexes a first logical channel for transmission, and the first logical channel is a channel for transmitting the first data packet or the second data packet.

In some embodiments, device 700 also includes:

The second replication unit is configured to perform SL MAC CE replication to obtain the first SL MAC CE and the second SL MAC CE when the third indication information indicates that the first terminal performs SL MAC CE replication;

The first sending unit 702 is configured to send the first SL MAC CE and the second SL MAC CE to the second terminal.

In some embodiments, the second bearer configuration is configured by a network device.

an available resource pool on the sending carrier;

logical channel.

In some embodiments, device 700 also includes:

The fourth receiving unit is configured to receive the HARQ feedback sent by the second terminal when the hybrid automatic repeat request HARQ feedback is activated.

The receiving manner of the HARQ feedback includes at least one of the following:

Receive the first HARQ feedback on the first resource, and receive the second HARQ feedback on the second resource, the first resource is the feedback resource corresponding to the first data packet, and the first HARQ feedback is for the HARQ feedback of the first data packet, the second resource is a feedback resource corresponding to the second data packet, and the second HARQ feedback is HARQ feedback for the second data packet;

receiving a first HARQ feedback on a first resource;

receiving third HARQ feedback on the first resource, the third HARQ feedback being HARQ feedback for the first data packet and the second data packet.

FIG. 8 is a schematic diagram of the structure and composition of the data transmission device provided by the embodiment of the present application, which is applied to the second terminal. As shown in FIG. 8, the data transmission device 800 includes:

The fifth receiving unit 801 is configured to receive the first data packet and the second data packet sent by the first terminal through the side link SL; the first data packet and the second data packet are data packets for the first terminal Obtained by copying: the first data packet is received through a first carrier, the second data packet is received through a second carrier, and the first carrier is the same as or different from the second carrier.

In some embodiments, the fifth receiving unit 801 is further configured to receive second indication information sent by the first terminal, where the second indication information is used to indicate that the data packet copy function is activated or deactivated.

Transmission via PC5RRC;

Transmission via sidelink SL-MAC CE;

Transmission of control information SCI via the sidelink.

Activation/deactivation indication;

an identification of the first carrier;

The identity of the second carrier.

In some embodiments, the apparatus 800 further includes: a second sending unit configured to receive the first bearer configuration sent by the first terminal when the second indication information indicates that the data packet copy function is activated ; The first bearer configuration is configured by the network device for the first terminal device, the first bearer configuration is used to indicate a first bearer and a second bearer, and the first bearer is used to transmit the first data packet, the second bearer is used for transmission or the second data packet.

Bearer ID;

Radio link control RLC layer configuration;

Media access control MAC layer configuration;

In some embodiments, the second sending unit is configured to send feedback information in response to the second indication information to the first terminal.

Transmission via PC5RRC;

Transmission via SL-MAC CE;

Transmission via SCI;

Transmission over the Physical Sidelink Feedback Channel PSFCH.

In some embodiments, the fifth receiving unit 801 is configured to report fourth indication information to the network device when receiving the second indication information; the fourth indication information is used to indicate that the network device is the The second terminal performs bearer configuration reconfiguration.

In some embodiments, the fifth receiving unit 801 is further configured to receive the SL-MAC CE sent by the first terminal.

In some embodiments, the SL-MAC CE sent by the first terminal includes: a first SL-MAC CE.

In some embodiments, the first SL MAC CE multiplexes a first logical channel for sending, and the first logical channel is a channel for transmitting the first data packet or the second data packet.

In some embodiments, the SL-MAC CE sent by the first terminal includes: the first SL-MAC CE and the second SL-MAC CE, the first SL-MAC CE and the second SL-MAC CE It is obtained by the first terminal through duplication of the SL-MAC CE.

an available resource pool on the sending carrier;

logical channel.

In some embodiments, the apparatus 800 further includes: a third sending module configured to send the HARQ feedback to the first terminal when the HARQ feedback is activated.

The first HARQ feedback is transmitted on the first resource, and the second HARQ feedback is transmitted on the second resource, the first resource is the feedback resource corresponding to the first data packet, and the first HARQ feedback is for the HARQ feedback of the first data packet, the second resource is a feedback resource corresponding to the second data packet, and the second HARQ feedback is HARQ feedback for the second data packet;

transmitting a first HARQ feedback on a first resource;

Transmit third HARQ feedback on the first resource, where the third HARQ feedback is HARQ feedback for the first data packet and the second data packet.

FIG. 9 is a schematic diagram of the structure and composition of the data transmission device provided by the embodiment of the present application, which is applied to network equipment. As shown in FIG. 9, the data transmission device 900 includes:

The first configuration unit configures the data packet copy configuration for the first terminal, the data packet copy configuration is used for the data packet copy function of the first terminal, and the first data packet and the second data packet obtained based on the data packet copy function The data packets are sent to the second terminal via the same or different carriers.

In some embodiments, the first information includes one of the following:

Reliability, channel busy rate CBR, reference signal received power RSRP.

In some embodiments, the configuration of the second information includes:

The network device configures the first terminal through the first message.

In some embodiments, the first message includes one of the following:

A system information block SIB message broadcast by the network device;

A pre-configuration message sent by the network device.

In some embodiments, device 900 also includes:

A fifth receiving unit configured to receive second QoS information sent by the first terminal, where the second QoS information is used to determine the first indication information.

In some embodiments, the second QoS information is also used by the network device to determine whether the second bearer information in the first bearer configuration needs to be configured for the first terminal, and the second bearer information is used for Indicates the second bearer.

Bearer ID;

Radio link control RLC layer configuration;

Media access control MAC layer configuration;

In some embodiments, device 900 also includes:

A sixth receiving unit configured to receive fourth indication information sent by the second terminal device; the second indication information is used to instruct the network device to reconfigure the first bearer configuration for the second terminal.

In some embodiments, the apparatus 900 further includes: a fourth sending unit configured to send third indication information to the first terminal, where the third indication information is used to indicate whether the first terminal performs SL MAC CE replication .

In some embodiments, device 900 also includes:

The second configuration unit is configured to configure a second bearer configuration to the first terminal, the second bearer configuration is used to indicate the transmission of the first SL MAC CE and the second SL MAC CE, the first SL MAC CE and the second SL MAC CE The second SL MAC CE is obtained by duplicating the SL MAC CE of the first terminal.

an available resource pool on the sending carrier;

logical channel.

Those skilled in the art should understand that the relevant description of the data transmission apparatus in the embodiment of the present application can be understood with reference to the relevant description of the data transmission method in the embodiment of the present application.

Fig. 10 is a schematic structural diagram of a communication device 1000 provided by an embodiment of the present application. The communication device may be a terminal device (first terminal or second terminal). The communication device 1000 shown in FIG. 10 includes a processor 1010, and the processor 1010 can invoke and run a computer program from a memory, so as to implement the method in the embodiment of the present application.

Optionally, as shown in FIG. 10 , the communication device 1000 may further include a memory 1020 . Wherein, the processor 1010 can invoke and run a computer program from the memory 1020, so as to implement the method in the embodiment of the present application.

Wherein, the memory 1020 may be an independent device independent of the processor 1010 , or may be integrated in the processor 1010 .

Optionally, as shown in FIG. 10, the communication device 1000 may further include a transceiver 1030, and the processor 1010 may control the transceiver 1030 to communicate with other devices, specifically, to send information or data to other devices, or receive other Information or data sent by the device.

Wherein, the transceiver 1030 may include a transmitter and a receiver. The transceiver 1030 may further include antennas, and the number of antennas may be one or more.

Optionally, the communication device 1000 may specifically be the network device of the embodiment of the present application, and the communication device 1000 may implement the corresponding processes implemented by the network device in each method of the embodiment of the present application. For the sake of brevity, details are not repeated here. .

Optionally, the communication device 1000 may specifically be the mobile terminal/terminal device of the embodiment of the present application, and the communication device 1000 may implement the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiment of the present application, for the sake of brevity , which will not be repeated here.

FIG. 11 is a schematic structural diagram of a chip according to an embodiment of the present application. The chip 1100 shown in FIG. 11 includes a processor 1110, and the processor 1110 can call and run a computer program from a memory, so as to implement the method in the embodiment of the present application.

Optionally, as shown in FIG. 11 , the chip 1100 may further include a memory 1120 . Wherein, the processor 1110 can invoke and run a computer program from the memory 1120, so as to implement the method in the embodiment of the present application.

Wherein, the memory 1120 may be an independent device independent of the processor 1110 , or may be integrated in the processor 1110 .

Optionally, the chip 1100 may also include an input interface 1130 . Wherein, the processor 1110 can control the input interface 1130 to communicate with other devices or chips, specifically, can obtain information or data sent by other devices or chips.

Optionally, the chip 1100 may also include an output interface 1140 . Wherein, the processor 1110 can control the output interface 1140 to communicate with other devices or chips, specifically, can output information or data to other devices or chips.

Optionally, the chip can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the mobile terminal/terminal device in the various methods of the embodiments of the present application. For the sake of brevity, here No longer.

It should be understood that the chip mentioned in the embodiment of the present application may also be called a system-on-chip, a system-on-chip, a system-on-a-chip, or a system-on-a-chip.

Fig. 12 is a schematic block diagram of a communication system 1200 provided by an embodiment of the present application. As shown in FIG. 12 , the communication system 1200 includes a terminal device 1210 and a network device 1220 .

Wherein, the terminal device 1210 can be used to realize the corresponding functions realized by the terminal device in the above method, and the network device 1220 can be used to realize the corresponding functions realized by the network device in the above method. .

It should be understood that the processor in the embodiment of the present application may be an integrated circuit chip, which has a signal processing capability. In the implementation process, each step of the above-mentioned method embodiment may be completed by an integrated logic circuit of hardware in a processor or an instruction in the form of software. The above-mentioned processor can be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other available Program logic devices, discrete gate or transistor logic devices, discrete hardware components. Various methods, steps, and logic block diagrams disclosed in the embodiments of the present application may be implemented or executed. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register. The storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware.

It can be understood that the memory in the embodiments of the present application may be a volatile memory or a nonvolatile memory, or may include both volatile and nonvolatile memories. Among them, the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electronically programmable Erase Programmable Read-Only Memory (Electrically EPROM, EEPROM) or Flash. The volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of illustration and not limitation, many forms of RAM are available, such as Static Random Access Memory (Static RAM, SRAM), Dynamic Random Access Memory (Dynamic RAM, DRAM), 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 memory of the systems and methods described herein is intended to include, but not be limited to, these and any other suitable types of memory.

It should be understood that the above-mentioned memory is illustrative but not restrictive. For example, the memory in the embodiment of the present application may also be a static random access memory (static RAM, SRAM), a dynamic random access memory (dynamic RAM, DRAM), 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 (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is, the memory in the embodiments of the present application is intended to include, but not be limited to, these and any other suitable types of memory.

The embodiment of the present application also provides a computer-readable storage medium for storing computer programs.

Optionally, the computer-readable storage medium can be applied to the network device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application. For the sake of brevity, here No longer.

Optionally, the computer-readable storage medium can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in the various methods of the embodiments of the present application , for the sake of brevity, it is not repeated here.

The embodiment of the present application also provides a computer program product, including computer program instructions.

Optionally, the computer program product can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in the methods of the embodiments of the present application, For the sake of brevity, details are not repeated here.

The embodiment of the present application also provides a computer program.

Optionally, the computer program can be applied to the mobile terminal/terminal device in the embodiment of the present application. When the computer program is run on the computer, the computer executes each method in the embodiment of the present application to be implemented by the mobile terminal/terminal device For the sake of brevity, the corresponding process will not be repeated here.

Those skilled in the art can appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.

Those skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.

If the functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory,) ROM, random access memory (Random Access Memory, RAM), magnetic disk or optical disc, etc., which can store program codes. .

The above is only a specific implementation of the application, but the scope of protection of the application is not limited thereto. Anyone familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the application. Should be covered within the protection scope of this application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

A data transmission method, the method comprising:

The first terminal copies the data packet to obtain the first data packet and the second data packet;

The first terminal sends the first data packet and the second data packet to the second terminal through the side link SL, the first data packet is sent through the first carrier, and the second data packet is transmitted through the The second carrier transmits, and the first carrier is the same as or different from the second carrier.
The method according to claim 1, wherein the conditions for the first terminal to perform packet duplication include at least one of the following:

The packet copy function is activated;

A first bearer configuration is configured, and the first bearer configuration is used to indicate a first bearer and/or a second bearer, the first bearer is a bearer for sending the first data packet, and the second bearer is for sending the The bearer of the second data packet;

Sending first quality of service (QoS) information, where the first QoS information has a high reliability requirement.
The method according to claim 2, wherein the manner in which the packet duplication function is activated comprises one of the following:

The first terminal is in a first state, and the first information satisfies an activation condition; the first state is a radio resource control RRC idle state or an RRC deactivated state;

The first terminal is in a second state and receives first indication information from a network device; the first indication information is used to instruct the first terminal to activate the data packet copy function, and the second state is RRC connection state.
The method according to claim 3, wherein the method further comprises:

The first terminal determines whether the first information satisfies the activation condition based on the first information and second information, where the second information is a threshold value corresponding to the first information.
The method according to claim 4, wherein the first information includes one of the following:

Reliability, channel busy rate CBR, reference signal received power RSRP.
The method according to claim 4 or 5, wherein the activation condition includes at least one of the following:

The reliability is less than the reliability threshold;

The channel busy rate is greater than the channel busy rate threshold;

RSRP is smaller than the RSRP threshold.
The method according to any one of claims 4 to 6, wherein the configuration of the second information includes:

The network device configures the first terminal through the first message.
The method according to claim 7, wherein the first message includes one of the following:

A system information block SIB message broadcast by the network device;

A pre-configuration message sent by the network device.
The method according to claim 3, wherein, before the first terminal receives the first indication information sent by the network device, the method further comprises:

The first terminal sends second QoS information to the network device, where the second QoS information is used by the network device to determine the first indication information.
The method according to claim 3 or 9, wherein the second QoS information is also used by the network device to determine whether second bearer information needs to be configured for the first terminal, and the second bearer information is used to indicate A second bearer, where the second bearer is a bearer for sending the second data packet.
The method according to any one of claims 1 to 10, wherein the method further comprises:

The first terminal receives a first bearer configuration configured by a network device, the first bearer configuration is used to indicate a first bearer and a second bearer, the first bearer is a bearer for sending the first data packet, and the The second bearer is a bearer for sending the second data packet.
The method according to claim 11, wherein the first bearer configuration includes bearer information, and the bearer information includes at least one of the following:

Bearer ID;

Radio link control RLC layer configuration;

Media access control MAC layer configuration;

available carrier information, the available carrier information indicating a set of available carriers, the set of available carriers including at least one available carrier;

First resource pool information, where the first resource pool information indicates a resource pool set corresponding to the available carrier, and the resource pool set includes at least one resource pool;

a bearer attribute, the bearer attribute is used to indicate that the bearer information is first bearer information or second bearer information, the first bearer information is used to indicate the first bearer, and the second bearer information is used to indicate the Describe the second bearer.
The method of claim 12, wherein,

The set of available carriers in the first bearer information is orthogonal or non-orthogonal to the set of available carriers in the second bearer information; and/or

The resource pool set in the first bearer information is orthogonal to the resource pool set in the second bearer information.
The method according to any one of claims 11 to 13, wherein the configuration of the first bearer configuration includes at least one of the following:

When the first terminal is in a first state, the network device sends a SIB message, and the first state is an RRC idle state or an RRC deactivated state;

When the first terminal is in the first state, the network device is pre-configured;

When the first terminal is in the second state, the network device sends it through dedicated signaling, and the second state is an RRC connected state.
The method according to any one of claims 12 to 14, wherein the method further comprises:

The first terminal determines the first bearer according to reliability;

The first terminal determines the second bearer according to a first mapping relationship, where the first mapping relationship is a mapping relationship between the first bearer and the second bearer.
The method according to claim 15, wherein the first mapping relationship is configured by the network device.
The method according to any one of claims 2 to 16, wherein the method further comprises:

The first terminal sends second indication information to the second terminal, where the second indication information is used to indicate that the data packet copy function is activated or deactivated.
The method according to claim 17, wherein the transmission mode of the second indication information includes at least one of the following:

Transmission via PC5 RRC;

Transmission via sidelink SL-MAC CE;

Transmission of control information SCI via the sidelink.
The method according to claim 17 or 18, wherein the second indication information includes at least one of the following:

Activation/deactivation indication;

An identifier of a first bearer, where the first bearer is a bearer for sending the first data packet;

An identifier of a second bearer, where the second bearer is a bearer for sending the second data packet;

an identification of the first carrier;

The identity of the second carrier.
The method according to any one of claims 17 to 19, wherein, when the first indication information indicates that the packet copy function is activated, the method further comprises:

The first terminal sends a first bearer configuration to the second terminal, the first bearer configuration is used to indicate a first bearer and a second bearer, the first bearer is a bearer for sending the first data packet, The second bearer is a bearer for sending the second data packet.
The method according to any one of claims 17 to 20, wherein the method further comprises:

The first terminal receives feedback information sent by the second terminal in response to the second indication information.
The method according to claim 21, wherein the transmission method of the feedback information includes at least one of the following:

Transmission via PC5 RRC;

Transmission via SL-MAC CE;

Transmission via SCI;

Transmission over the Physical Sidelink Feedback Channel PSFCH.
The method according to claim 21 or 22, wherein the feedback information instructs the second terminal to accept or reject the activation of the data packet copy function by the first terminal.
The method according to any one of claims 1 to 23, wherein the method further comprises:

The first terminal receives third indication information sent by the network device, where the third indication information is used to indicate whether the first terminal performs SL MAC CE replication.
The method according to claim 24, wherein, when the third indication information indicates that the first terminal does not perform SL MAC CE duplication, the method further comprises:

The first terminal sends the first SL MAC CE to the second terminal.
The method according to claim 25, wherein the first SL MAC CE is multiplexed with the data of the first data packet or the data of the second data packet.
The method according to claim 25 or 26, wherein the first SL MAC CE multiplexes a first logical channel for transmission, and the first logical channel is for transmitting the first data packet or the second data packet Channel.
The method according to any one of claims 24 to 27, wherein, when the third indication information indicates that the first terminal performs SL MAC CE duplication, the method further comprises:

The first terminal performs SL MAC CE replication to obtain the first SL MAC CE and the second SL MAC CE;

The first terminal sends the first SL MAC CE and the second SL MAC CE to the second terminal.
The method according to claim 28, wherein the first SL MAC CE and the second SL MAC CE are transmitted based on a second bearer configuration.
The method according to claim 29, wherein the second bearer configuration is configured by a network device.
The method according to claim 29 or 30, wherein the second bearer configuration includes: first sending information and second sending information, the first sending information is sending information corresponding to the first SL MAC CE, The second sending information is sending information corresponding to the second SL MAC CE.
The method according to claim 31, wherein the sending information indicates at least one of the following:

a set of transmit carriers, the set of transmit carriers comprising at least one transmit carrier;

an available resource pool on the sending carrier;

logical channel.
The method according to any one of claims 1 to 32, wherein, in the case where Hybrid Automatic Repeat Request (HARQ) feedback is activated, the method further comprises:

The first terminal receives the HARQ feedback sent by the second terminal.
The method according to claim 33, wherein the transmission mode of the HARQ feedback includes at least one of the following:

The first HARQ feedback is transmitted on the first resource, and the second HARQ feedback is transmitted on the second resource, the first resource is the feedback resource corresponding to the first data packet, and the first HARQ feedback is for the HARQ feedback of the first data packet, the second resource is a feedback resource corresponding to the second data packet, and the second HARQ feedback is HARQ feedback for the second data packet;

transmitting a first HARQ feedback on a first resource;

Transmit third HARQ feedback on the first resource, where the third HARQ feedback is HARQ feedback for the first data packet and the second data packet.
A data transmission method, the method comprising:

The second terminal receives the first data packet and the second data packet sent by the first terminal through the side link SL; the first data packet and the second data packet are obtained by duplicating data packets of the first terminal; The first data packet is received through a first carrier, the second data packet is received through a second carrier, and the first carrier is the same as or different from the second carrier.
The method of claim 35, wherein the method further comprises:

The second terminal receives second indication information sent by the first terminal, where the second indication information is used to indicate that the data packet copy function is activated or deactivated.
The method according to claim 36, wherein the transmission mode of the second indication information includes at least one of the following:

Transmission via PC5 RRC;

Transmission via sidelink SL-MAC CE;

Transmission of control information SCI via the sidelink.
The method according to claim 36 or 37, wherein the second indication information includes at least one of the following:

Activation/deactivation indication;

An identifier of a first bearer, where the first bearer is a bearer for sending the first data packet;

An identifier of a second bearer, where the second bearer is a bearer for sending the second data packet;

an identification of the first carrier;

The identity of the second carrier.
The method according to any one of claims 35 to 38, wherein, when the second indication information indicates that the packet copy function is activated, the method further comprises:

The second terminal receives the first bearer configuration sent by the first terminal; the first bearer configuration is configured by the network device for the first terminal device, and the first bearer configuration is used to indicate the first bearer and A second bearer, the first bearer is used to transmit the first data packet, and the second bearer is used to transmit or the second data packet.
The method according to claim 39, wherein the first bearer configuration includes bearer information, and the bearer information includes at least one of the following:

Bearer ID;

Radio link control RLC layer configuration;

Media access control MAC layer configuration;

available carrier information, the available carrier information indicating a set of available carriers, the set of available carriers including at least one available carrier;

First resource pool information, where the first resource pool information indicates a resource pool set corresponding to the available carrier, and the resource pool set includes at least one resource pool;

a bearer attribute, the bearer attribute is used to indicate that the bearer information is first bearer information or second bearer information, the first bearer information is used to indicate the first bearer, and the second bearer information is used to indicate the Describe the second bearer.
The method of claim 40, wherein,

The set of available carriers in the first bearer information is orthogonal or non-orthogonal to the set of available carriers in the second bearer information; and/or

The resource pool set in the first bearer information is orthogonal to the resource pool set in the second bearer information.
The method according to any one of claims 36 to 41, wherein the method further comprises:

The second terminal sends feedback information in response to the second indication information to the first terminal.
The method according to claim 42, wherein the transmission method of the feedback information includes at least one of the following:

Transmission via PC5 RRC;

Transmission via SL-MAC CE;

Transmission via SCI;

Transmission over the Physical Sidelink Feedback Channel PSFCH.
The method according to any one of claims 42 or 43, wherein the feedback information instructs the second terminal to accept or reject the activation of the data packet copy function by the first terminal.
The method according to claim 44, wherein said method further comprises:

When the second terminal receives the second indication information, it reports fourth indication information to the network device; the fourth indication information is used to instruct the network device to reconfigure the bearer configuration for the second terminal. match.
The method according to claim 45, wherein when the reconfiguration of the network device fails, the feedback information instructs the second terminal to refuse the first terminal to activate the data packet copy function.
The method according to any one of claims 35 to 46, wherein the method further comprises:

The second terminal receives the SL-MAC CE sent by the first terminal.
The method according to claim 47, wherein the SL-MAC CE sent by the first terminal comprises: a first SL-MAC CE.
The method according to claim 48, wherein the first SL MAC CE is multiplexed with the data of the first data packet or the data of the second data packet.
The method according to claim 48 or 49, wherein the first SL MAC CE multiplexes a first logical channel for transmission, and the first logical channel is for transmitting the first data packet or the second data packet Channel.
The method according to any one of claims 47 to 50, wherein the SL-MAC CE sent by the first terminal includes: a first SL-MAC CE and a second SL-MAC CE, and the first SL-MAC CE The MAC CE and the second SL-MAC CE are obtained by the first terminal through duplication of the SL-MAC CE.
The method according to claim 51, wherein the first SL MAC CE and the second SL MAC CE are transmitted based on a second bearer configuration.
The method according to claim 52, wherein the second bearer configuration includes: first sending information and second sending information, the first sending information is sending information corresponding to the first SL MAC CE, the The second sending information is sending information corresponding to the second SL MAC CE.
The method according to claim 53, wherein the sending information indicates at least one of the following:

a set of transmit carriers, the set of transmit carriers comprising at least one transmit carrier;

an available resource pool on the sending carrier;

logical channel.
The method according to any one of claims 35 to 54, wherein, in the case where Hybrid Automatic Repeat Request (HARQ) feedback is activated, the method further comprises:

The second terminal sends HARQ feedback to the first terminal.
The method according to claim 55, wherein the transmission mode of the HARQ feedback includes at least one of the following:

The first HARQ feedback is transmitted on the first resource, and the second HARQ feedback is transmitted on the second resource, the first resource is the feedback resource corresponding to the first data packet, and the first HARQ feedback is for the HARQ feedback of the first data packet, the second resource is a feedback resource corresponding to the second data packet, and the second HARQ feedback is HARQ feedback for the second data packet;

transmitting a first HARQ feedback on a first resource;

Transmit third HARQ feedback on the first resource, where the third HARQ feedback is HARQ feedback for the first data packet and the second data packet.
A data transmission method, the method comprising:

The network device configures a data packet copy configuration for the first terminal, the data packet copy configuration is used for the data packet copy function of the first terminal, and the first data packet and the second data packet obtained based on the data packet copy function pass The same or different carrier is sent to the second terminal.
The method according to claim 57, wherein the data packet replication configuration comprises at least one of the following:

second information, where the second information is a threshold value corresponding to the first information, and the second information is used by the first terminal to determine whether to activate the data packet copy function;

first indication information, where the first indication information is used to instruct the first terminal to activate the data packet copy function;

First bearer configuration, where the first bearer configuration is used to indicate a first bearer and/or a second bearer, the first bearer is a bearer for sending the first data packet, and the second bearer is for sending the second bearer The bearer of the second data packet,

A first mapping relationship, where the first mapping relationship is a mapping relationship between the first bearer and the second bearer.
The method of claim 58, wherein the first information includes one of:

Reliability, channel busy rate CBR, reference signal received power RSRP.
The method according to claim 58 or 59, wherein the configuration of the second information includes:

The network device configures the first terminal through the first message.
The method of claim 60, wherein the first message includes one of:

A system information block SIB message broadcast by the network device;

A pre-configuration message sent by the network device.
The method according to any one of claims 57 to 61, wherein the method further comprises:

The network device receives the second QoS information sent by the first terminal, where the second QoS information is used to determine the first indication information.
The method according to claim 62, wherein the second QoS information is also used by the network device to determine whether the second bearer information in the first bearer configuration needs to be configured for the first terminal, and the second The second bearer information is used to indicate the second bearer.
The method according to any one of claims 58 to 63, wherein the first bearer configuration includes bearer information, and the bearer information includes at least one of the following:

Bearer ID;

Radio link control RLC layer configuration;

Media access control MAC layer configuration;

available carrier information, the available carrier information indicating a set of available carriers, the set of available carriers including at least one available carrier;

First resource pool information, where the first resource pool information indicates a resource pool set corresponding to the available carrier, and the resource pool set includes at least one resource pool;

a bearer attribute, the bearer attribute is used to indicate that the bearer information is first bearer information or second bearer information, the first bearer information is used to indicate the first bearer, and the second bearer information is used to indicate the Describe the second bearer.
The method of claim 64, wherein,

The set of available carriers in the first bearer information is orthogonal or non-orthogonal to the set of available carriers in the second bearer information; and/or

The resource pool set in the first bearer information is orthogonal to the resource pool set in the second bearer information.
The method according to any one of claims 58 to 65, wherein the configuration of the first bearer configuration includes at least one of the following:

When the first terminal is in a first state, the network device sends a SIB message, and the first state is an RRC idle state or an RRC deactivated state;

When the first terminal is in the first state, the network device is pre-configured;

When the first terminal is in the second state, the network device sends it through dedicated signaling, and the second state is an RRC connection state.
The method according to any one of claims 57 to 66, wherein the method further comprises:

The network device receives fourth indication information sent by the second terminal device; the second indication information is used to instruct the network device to reconfigure the first bearer configuration for the second terminal.
The method according to any one of claims 57 to 67, wherein the method further comprises:

The network device sends third indication information to the first terminal, where the third indication information is used to indicate whether the first terminal performs SL MAC CE replication.
The method according to any one of claims 57 to 68, wherein the method further comprises:

The network device configures a second bearer configuration to the first terminal, the second bearer configuration is used to indicate the transmission of the first SL MAC CE and the second SL MAC CE, and the first SL MAC CE and the second SL MAC CE The second SL MAC CE is obtained by duplicating the SL MAC CE of the first terminal.
The method according to claim 69, wherein the second bearer configuration includes: first sending information and second sending information, the first sending information is sending information corresponding to the first SL MAC CE, and the The second sending information is sending information corresponding to the second SL MAC CE.
The method of claim 69, wherein the sending information indicates at least one of the following:

a set of transmit carriers, the set of transmit carriers comprising at least one transmit carrier;

an available resource pool on the sending carrier;

logical channel.
A data transmission device, applied to a first terminal, comprising:

The first copying unit is configured to copy the data packet to obtain the first data packet and the second data packet;

The first sending unit is configured to send the first data packet and the second data packet to the second terminal through the side link SL, the first data packet is sent through the first carrier, and the second data packet The packets are sent over a second carrier, the first carrier being the same as or different from the second carrier.
A data transmission device, applied to a second terminal, comprising:

The fifth receiving unit is configured to receive the first data packet and the second data packet sent by the first terminal through the SL; the first data packet and the second data packet are obtained by duplicating data packets by the first terminal; The first data packet is received through a first carrier, the second data packet is received through a second carrier, and the first carrier is the same as or different from the second carrier.
A data transmission device applied to network equipment, comprising:

The first configuration unit is configured to configure a data packet copy configuration for the first terminal, the data packet copy configuration is used for the data packet copy function of the first terminal, and the first data packet obtained based on the data packet copy function and The second data packet is sent to the second terminal through the same or different carrier.
A terminal device, comprising: a processor and a memory, the memory is used to store a computer program, the processor is used to invoke and run the computer program stored in the memory, and execute the computer program described in any one of claims 1 to 34 Methods.
A terminal device, comprising: a processor and a memory, the memory is used to store a computer program, the processor is used to invoke and run the computer program stored in the memory, and execute the computer program described in any one of claims 35 to 56 Methods.
A network device, comprising: a processor and a memory, the memory is used to store a computer program, the processor is used to invoke and run the computer program stored in the memory, and execute the computer program described in any one of claims 57 to 71 Methods.
A chip, comprising: a processor, configured to invoke and run a computer program from a memory, so that a device equipped with the chip executes the method according to any one of claims 1 to 34.
A chip, comprising: a processor, configured to invoke and run a computer program from a memory, so that a device equipped with the chip executes the method as claimed in any one of claims 35 to 56.
A chip, comprising: a processor, configured to invoke and run a computer program from a memory, so that a device equipped with the chip executes the method as claimed in any one of claims 57 to 71.
A computer-readable storage medium for storing a computer program, the computer program causing a computer to execute the method according to any one of claims 1-34.
A computer-readable storage medium for storing a computer program, the computer program causing a computer to execute the method according to any one of claims 35 to 56.
A computer-readable storage medium for storing a computer program, the computer program causing a computer to execute the method according to any one of claims 57-71.
A computer program product comprising computer program instructions for causing a computer to perform the method as claimed in any one of claims 1 to 34.
A computer program product comprising computer program instructions causing a computer to perform the method as claimed in any one of claims 35 to 56.
A computer program product comprising computer program instructions for causing a computer to perform the method as claimed in any one of claims 57 to 71.
A computer program which causes a computer to carry out the method according to any one of claims 1 to 34.
A computer program, the computer program causes a computer to execute the method according to any one of claims 35 to 56.
A computer program that causes a computer to perform the method as claimed in any one of claims 57 to 71.