Data transmission method and device, equipment and storage medium

Abstract

The invention relates to a data transmission method and device, equipment and a storage medium. First user equipment sends first data according to configuration information; wherein the first data comprises data of the first user equipment, received from the network equipment or received from the second user equipment and to be sent to the third user equipment, and / or data received from the second user equipment and to be sent to the network equipment by the first user equipment; the configuration information is used for indicating a radio link control (RLC) channel used when the first user equipment sends the first data. By adopting the method, the configuration mode of the RLC channel used when the first user equipment sends the first data in the relay communication system can be provided, so that when the first user equipment sends the first data, the RLC channel used when the first data is sent can be determined, the RLC channel is used for sending the first data, and the first data is sent by the first user equipment. And the reliability of the first data sending process is improved.

Description

Technical Field

[0001] The present application relates to the field of communications, and in particular to a data transmission method, apparatus, device, and storage medium. Background Art

[0002] With the development of communication technology, user equipment can not only communicate directly with network equipment, but also achieve communication connections with network equipment through relays from other user equipment in relay communication systems. The user equipment providing relay services in the aforementioned relay communication system can be called relay user equipment (Relay User Equipment, or Relay UE for short), and the equipment accessing the network through relay user equipment can be called remote user equipment (Remote UE).

[0003] Taking uplink relay service as an example, the Relay UE can map different uplink bearers of the same Remote UE and / or different Remote UEs to the Relay UE's Radio Link Control (RLC) channel. However, the specific scheme for the Relay UE to map the data of each bearer to the Relay UE's RLC channel is still unclear. Summary of the Invention

[0004] The embodiments of the present application provide a data transmission method, apparatus, device and storage medium, which can xx.

[0005] In a first aspect, a data transmission method includes:

[0006] The first user equipment sends first data according to the configuration information; the first data includes data of the first user equipment itself, data received from the network device or received from the second user equipment and to be sent to the third user equipment, and / or data received by the first user equipment from the second user equipment and to be sent to the network device.

[0007] The configuration information is used to indicate the Radio Link Control (RLC) channel used by the first user equipment when transmitting the first data.

[0008] Secondly, a data transmission apparatus, applied to a first user equipment, includes:

[0009] The transmitting module is used to transmit first data according to configuration information; the first data includes data to be transmitted to the third user equipment from the first user equipment itself, data received from the network device or data received from the second user equipment, and / or data received by the first user equipment from the second user equipment to be transmitted to the network device; the configuration information is used to indicate the Radio Link Control Layer (RLC) channel used by the first user equipment when transmitting the first data.

[0010] Thirdly, a user equipment includes a transceiver, a memory, and a processor, wherein the memory stores a computer program, and the processor, in cooperation with the transceiver, executes the computer program to implement the steps of the data transmission method in the first aspect.

[0011] In a fourth aspect, a computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps of the data transmission method in the first aspect.

[0012] The aforementioned data transmission method, apparatus, device, and storage medium allow a first user equipment (UAE) to transmit first data according to configuration information. The first data includes data received by the first UAE itself, data received from a network device, or data received from a second UAE and intended to be transmitted to a third UAE, and / or data received by the first UAE from a second UAE and intended to be transmitted to a network device. The configuration information is used to indicate the Radio Link Control (RLC) channel used by the first UAE when transmitting the first data. Because the configuration information can be used to indicate the RLC channel used by the first UAE when transmitting the first data, it provides a configuration method for the RLC channel used by the first UAE when transmitting first data in a relay communication system. This allows the first UAE to determine the RLC channel used when transmitting the first data and thus use that RLC channel to transmit the first data, improving the reliability of the first data transmission process. Attached Figure Description

[0013] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0014] Figure 1 A diagram showing an application environment of a data transmission method in one embodiment;

[0015] Figure 2 A communication connection diagram of a data transmission method in one embodiment;

[0016] Figure 3 1 is a flow chart of a data transmission method according to an embodiment;

[0017] Figure 4 A schematic diagram of a data transmission method according to an embodiment;

[0018] Figure 5 1 is a flow chart of a data transmission method according to an embodiment;

[0019] Figure 6 This is a schematic diagram of the communication connection for a data transmission method in one embodiment;

[0020] Figure 7 This is a schematic diagram of the communication connection for a data transmission method in one embodiment;

[0021] Figure 8 This is a schematic diagram of the communication connection for a data transmission method in one embodiment;

[0022] Figure 9 This is a schematic diagram of the communication connection for a data transmission method in one embodiment;

[0023] Figure 10 This is a structural block diagram of a data transmission device in one embodiment;

[0024] Figure 11 This is a structural block diagram of a data transmission device in one embodiment;

[0025] Figure 12 This is a structural block diagram of a data transmission device in one embodiment;

[0026] Figure 13 This is a structural block diagram of a user equipment in one embodiment. DETAILED DESCRIPTION

[0027] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0028] In Rel-13 Proximity-based Service (ProSe), the 3rd Generation Partnership Project (3GPP) introduced UE-to-network relay functionality based on Layer 3 relays. This means that remote user equipment can access the network through relay user equipment, and the remote user equipment and the relay user equipment are connected through sidelink communication.

[0029] The data transmission method provided in this application can be applied to the field of communication technology. Figure 1This is a schematic diagram illustrating an application scenario of the data transmission method provided in this application embodiment. The communication system may include at least one network device 100 and multiple user equipment (UE) 200. The UE 200 may communicate with the network device 100, for example, through uplink or downlink communication; or, one of the UEs 200 may access the network through other UEs, and a UE 200 may access the network through one or more other UEs; the different UEs 200 may communicate with each other via a sidelink communication via PC5.

[0030] The network device 100 can be any device with wireless transceiver capabilities, including but not limited to: NodeB base stations, eNodeB base stations, base stations in fifth-generation (5G) communication systems, base stations or network devices in future communication systems, access nodes in WiFi systems, wireless relay nodes, and wireless backhaul nodes. The network device 100 can also be a wireless controller in a cloud radio access network (CRAN) scenario. The network device 100 can also be a small cell, a transmission reference point (TRP), a roadside unit (RSU), etc. The embodiments of this application do not limit the specific technology or device form used in the network device 100.

[0031] The aforementioned user equipment 200 can be a device with wireless transceiver capabilities, and can be, but is not limited to, handheld, wearable, or vehicle-mounted devices. User equipment 200 can be a mobile phone, tablet computer, computer with wireless transceiver capabilities, virtual reality (VR) terminal device, augmented reality (AR) terminal device, wireless terminal in industrial control, wireless terminal in self-driving, wireless terminal in remote medical care, wireless terminal in smart grid, wireless terminal in transportation safety, wireless terminal in smart city, wireless terminal in smart home, etc. The embodiments in this application do not limit the application scenarios.

[0032] In the aforementioned communication system, where one user equipment (UE) accesses the network through another UE, the UE providing relay services can be called a Relay UE, and the UE accessing the network through the Relay UE can be called a Remote UE. In the uplink direction, when the Remote UE has data to send to the network device, it can send the data to the Relay UE. The Relay UE then receives the data and sends it to the network device via the uplink of its Uu interface. In the downlink direction, the network device can send data to the Relay UE via the downlink of its Uu interface, and the Relay UE then sends the data to the Remote UE via the Sidelink.

[0033] like Figure 2 As shown, the Remote UE and network devices share a Packet Data Convergence Protocol (PDCP) stack facing the Uu interface. This PDCP stack on the Uu interface contains several Radio Bearers (RBs) for transmitting data from the Remote UE. Furthermore, an Adaptation Layer (ADAPT) is set below the PDCP stack on the Remote UE's Uu interface. This layer adds a header to the Remote UE's data, including the Remote UE's identifier; adds the Remote UE's Radio Bearer Identifier (RB1D) to the data; identifies data from the Remote UE and Relay UE; identifies data from different Remote UEs; and identifies data from different Radio Bearers (RBs) of the Remote UE. This allows the network device to distinguish data from different Remote UEs and then send it to different core network gateways and servers for further processing. Below the adaptation protocol layer is the PC5 interface wireless protocol stack, which includes the RLC layer, Medium Access Control (MAC), and Physical (PHY) layer. The PC5 interface is the interface for sidelink communication between the Remote UE and the Relay UE.

[0034] The relay UE and network equipment share a PDCP protocol stack facing the Uu interface. Within the PDCP protocol stack of the relay UE's Uu interface, there can be several Radio Bearer (RBs) for transmitting data from the remote UE. Below the PDCP protocol stack is an adaptation layer, which can be used to relay data from the remote UE. Since the relay UE itself also transmits data, this adaptation layer can be used to identify the data between the relay UE and the remote UE, to identify the data of different remote UEs, and to identify the data of different radio bearer (RBs) of the remote UE. Below the adaptation protocol layer are the RLC layer, MAC layer, and PHY layer facing the Uu interface.

[0035] Taking the uplink transmission direction as an example, after the Relay UE receives uplink data, it can map the data from several RBs in the Relay UE's adaptation layer to different interfaces of the RLC layer of the Uu interface, that is, the Uu RLC channel. Then, after processing by the RLC layer, MAC layer, and PHY layer, it is sent to the network device. However, the current protocol does not specify the specific mapping method.

[0036] To address the above problems, this application provides a data transmission method that can solve the problem that user equipment cannot clearly determine the RLC channel corresponding to the data to be transmitted when sending data.

[0037] It should be noted that the data transmission method of this application is not limited to solving the above-mentioned technical problems, but can also be used to solve other technical problems, which are not limited in this application.

[0038] The technical solutions of this application will be described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0039] Figure 3 This is a flowchart of a data transmission method in one embodiment. The data transmission method in this embodiment is designed to run on... Figure 1 The user equipment in the example is described. Figure 3 As shown, the above data transmission method includes the following steps:

[0040] S101. A first user equipment obtains configuration information; the configuration information is used to indicate a radio link control layer RLC channel to be used by the first user equipment when sending the first data.

[0041] The first user equipment may determine the RLC channel to be used when sending the first data based on the above configuration information.

[0042] The aforementioned RLC channel can be the interface for receiving data at the RLC layer of the first user equipment. Each RLC entity in the RLC layer of the first user equipment can correspond to one RLC channel, and the RLC layer of the first user equipment can correspond to multiple RLC channels. The number of RLC channels can be 4, 8, or other numbers, which are not limited here. The aforementioned RLC channel can be an RLC channel facing the Uu interface, that is, the RLC channel used by the first user equipment to send the first data to the network device; or, the aforementioned RLC channel can also be an RLC channel facing the PC5 interface, that is, the RLC channel used by the first user equipment to send the first data to other user equipment.

[0043] The above configuration information can indicate the method for determining the RLC channel corresponding to the first data. This method may include determining the RLC channel randomly, for example, when the first user equipment sends the first data, it can randomly select an available RLC channel from multiple RLC channels; or, the method may also include selecting the corresponding RLC channel according to the order of the RLC channels, for example, when the first user equipment sends the first data, it can determine that the Nth RLC channel was used in the last data transmission, and then use the N+1th or N-1th RLC channel as the RLC channel used for the current transmission of the first data. The specific indication method of the configuration information is not limited here. Optionally, the above configuration information can be used to explicitly determine which RLC channel corresponds to the first data; for example, when the value of a preset field in the first data is A, the RLC channel corresponding to field A can be determined as the RLC channel used when transmitting the first data.

[0044] The aforementioned configuration information may be preset information in the first user equipment. For example, the first user equipment may set the configuration information according to the protocol. Optionally, the first user equipment may receive configuration information sent by the network device. When the first user equipment receives configuration information sent by the network device, it may receive the aforementioned configuration information through a reconfiguration message or through other messages, which is not limited here.

[0045] When the first user equipment (UE) is located at different nodes in the relay communication system, it can obtain configuration information corresponding to the node type. For example, when the first UE is a Relay UE, it can obtain the first configuration information corresponding to the Relay UE; when the first UE is a Remote UE in the relay communication system, it can obtain the second configuration information corresponding to the Remote UE. In another implementation, the above configuration information may include configuration data corresponding to different node types. The first UE can determine the configuration data corresponding to the node type from the obtained configuration information based on the node type in the relay communication system.

[0046] When a first user equipment (User Equipment) can send first data of different data types, the configuration information used can be the same or different. For example, the aforementioned data types can be service data or signaling data; the first User Equipment can obtain the third configuration information corresponding to the service data, or the fourth configuration information corresponding to the signaling data. Optionally, the methods for obtaining the configuration information corresponding to different data types can be the same or different.

[0047] S102. The first user device sends first data according to the configuration information; the first data includes data of the first user device itself, data received from the network device, or data received from the second user device to be sent to the third user device, and / or data received by the first user device from the second user device to be sent to the network device.

[0048] The aforementioned first data may be data sent by the first user equipment to the third user equipment in a relay communication system. This data may include data from the first user equipment itself, data received from the network device, or data received from the second user equipment and intended for transmission to the third user equipment. The first user equipment may send its own data to the third user equipment, which then transmits it to the network device; or, the first user equipment may receive data from the network device and then send the first data to the third user equipment; or, the first user equipment may receive the first data from the second user equipment and then send it to the third user equipment. The first user equipment may directly send the first data to the third user equipment, or it may send the first data to the third user equipment via relay from other user equipment; this is not limited here.

[0049] The first data may also be data sent by the first user equipment to the network device in the relay communication system. The first data may also be data received by the first user equipment from the second user equipment and to be sent to the network device.

[0050] The first user equipment can determine the RLC channel used to send the first data based on the configuration information, and then use that RLC channel to send the first data. If an adaptation layer is configured in the first user equipment, this adaptation layer can be configured above the RLC layer, and the RLC channel can be a data transmission channel from the adaptation layer to the RLC layer. The first user equipment can determine the RLC channel used to send the first data through the adaptation layer. In another implementation, the first user equipment can also determine the RLC channel used to send the first data through the PDCP layer, and the RLC channel can be a data transmission channel from the PDCP layer to the RLC layer.

[0051] The first user equipment can map different data from the same user equipment to the same RLC channel, or it can map different data from the same user equipment to different RLC channels. The first user equipment can also map the first data from different user equipment to different RLC channels, or it can map the first data from different user equipment to the same RLC channel; there is no limitation on this.

[0052] After the first user equipment determines the RLC channel to be used when transmitting the first data, it can transmit the first data to the RLC layer in the first user equipment through the adaptation layer or PDCP layer via the RLC channel. Then, the first data is processed by the RLC layer, MAC layer, and PHY layer before being transmitted. Specifically, the RLC layer can perform segmentation, resegmentation, and retransmission processing on the first data; the MAC layer can perform mapping between the logical channel and the transport channel of the first data, multiplexing and demultiplexing of the first data, and air interface scheduling; and the PHY layer can perform low-level encoding and decoding processing on the first data.

[0053] In the aforementioned data transmission method, the first user equipment (UE) transmits first data according to configuration information. The first data includes data to be transmitted to the third UE, data received by the first UE from the network device or the second UE, and / or data received by the first UE from the second UE to the network device. The configuration information is used to indicate the Radio Link Control (RLC) channel used by the first UE when transmitting the first data. Since the configuration information can be used to indicate the RLC channel used by the first UE when transmitting the first data, it provides a configuration method for configuring the RLC channel when transmitting first data in a relay communication system. This allows the first UE to determine the RLC channel to be used when transmitting the first data, thereby improving the reliability of the first data transmission process.

[0054] In one embodiment, the configuration information may include a correspondence between the RLC channel and the identification information of the first data. The identification information may be used to identify which user equipment (UE) the first data belongs to, or to which bearer the first data is transmitted, or to which UE the first data is received from or to which UE, etc., without limitation. The configuration information may include one type of identification information correspondence with the RLC channel, or it may include multiple types of identification information correspondences with the RLC channel, without limitation.

[0055] In one implementation, the identification information of the first data may include the device identifiers of the second user equipment and / or the third user equipment. The device identifier can uniquely identify the user equipment. It may be a temporary identifier for the user equipment, such as a Subscription Concealed Identifier (SUCI), or an International Mobile Equipment Identity (IMEI). The type of device identifier is not limited here. Optionally, the device identifier may include at least one of the following: a globally unique temporary identifier (5G-S-TMSI), a Radio Network Temporary Identifier (I-RNTI), a Layer 2 Identifier (L2 ID), an identifier used by the first user equipment in the adaptation layer, and sequence information in the Sidelink UE Information (SUI) message.

[0056] The aforementioned 5G-S-TMSI can be a simplified form of the 5G Globally Unique Temporary Identifier (5G-GUTI), which can be assigned to the user equipment by the Access and Mobility Management Function (AMF) module in the core network. The aforementioned I-RNTI can be one of the Radio Network Temporary Identifiers (RNTI), which can be assigned to the user equipment by the radio side, or it can be an RNTI carried in a paging message. The aforementioned L2 ID can be an identifier assigned by Layer 2 in the first user equipment to the second or third user equipment; Layer 2 can include the RLC layer, MAC layer, and PHY layer. The identifier used by the first user equipment in the adaptation layer can be the corresponding identifier of the second or third user equipment in the adaptation layer of the first user equipment.

[0057] In one implementation, the identification information of the first data may include the identifier of the bearer where the first data resides. The bearer may be a data transmission channel used to transmit the first data; each user equipment (UE) may establish one or more bearers, with different bearers corresponding to different UEs. The bearer between the UE and the network device can be called a radio bearer. Radio bearers can be divided into control plane bearers (Signaling Radio Bearers, SRBs) and user plane bearers (Data Radio Bearers, DRBs) based on their content. The SRB can be used to carry signaling data, and can be divided into SRB0, SRB1, and SRB2 according to the different signaling carried. SRB0 carries RRC signaling before the establishment of an RRC connection, SRB1 carries RRC signaling and Non-access stratum (NAS) signaling before the establishment of SRB2, and SRB2 carries NAS signaling. The DRB can be used to carry user plane data, and a UE may establish multiple DRBs simultaneously.

[0058] When the bearer type where the first data resides is different, the method for obtaining the configuration information corresponding to the first data can be different. If the bearer where the first data resides is SRB0 and / or SRB1, the aforementioned configuration information can be the configuration information preset by the protocol. If the bearer where the first data resides is SRB2 or DRB, the aforementioned configuration information can be information sent by the network device to the first user equipment.

[0059] In one implementation, the identification information of the first data may include the relevant identifier of the RLC channel used by the first user equipment when receiving the first data. When the first user equipment receives the first data, it can process the data sequentially through the PHY layer, MAC layer, and RLC layer on the receiving side, and then transmit the first data to the adaptation layer or PDCP layer through the RLC channel between the receiving side's RLC layer and the adaptation layer or PDCP layer. When transmitting the first data, the first user equipment can determine the transmitting side's RLC channel based on the relevant identifier of the receiving side's RLC channel used when receiving the first data, such as... Figure 4 As shown. The related identifier of the RLC channel used when receiving the first data may be the radio link control layer bearer identifier RLC bearer ID used when receiving the first data, and the logical channel identifier (Logical Channel Identifier, LCID for short) corresponding to the RLC channel used when receiving the first data. Among them, the above-mentioned RLC bearer ID may correspond one-to-one with the RLC channel on the receiving side. The logical channel in the first user equipment may refer to the data transmission channel between the RLC layer and the MAC layer, and the RLC channel corresponding to the RLC layer may correspond one-to-one to the logical channel, and the RLC channel used when receiving the first data may be identified by the LCID of the logical channel used when receiving the first data.

[0060] It should be noted that the configuration information in the embodiments of the present application can be a correspondence between one type of identification information and an RLC channel, or can be a correspondence between multiple types of identification information and RLC channels, and this is not limited here. The multiple types of identification information can be any combination of the device identification, the identification of the bearer on which the first data resides, and the identification of the RLC channel used to receive the first data.

[0061] Taking the identification information in the configuration information as 5G-S-TMSI as an example, the above configuration information can be represented in the following table. TMSIs 1-4 can be used to identify different user equipments, and the above RLC channels 1-3 can represent the RLC channels on the transmitting side of the first user equipment. Different identification information can correspond to the same RLC channel.

[0062] Identification information RLC channel TMSI 1 RLC Channel 1 TMSI 2 RLC Channel 1 TMSI 3 RLC Channel 2 TMSI 4 RLC Channel 3

[0063] Taking the identification information in the configuration information, including the 5G-S-TMSI and the bearer where the first data resides, as an example, the above configuration information can be represented as shown in the table below. TMSI 1-2 can be used to identify different user equipments, bearers 1-4 can be used to identify different radio bearers, and RLC channels 1-2 can represent the RLC channels on the transmitting side of the first user equipment. Data transmitted by the same user equipment through different bearers can correspond to different RLC channels or the same RLC channel; data transmitted by different user equipment through different bearers can correspond to different RLC channels or the same RLC channel.

[0064] In the above-mentioned data transmission method, the configuration information obtained by the first user equipment may include the correspondence between the identification information of the first data and the RLC channel, so that based on the above-mentioned correspondence, it can be clearly determined which RLC channel the first data corresponds to, so that the first user equipment can use the RLC channel to send the first data.

[0065] In one embodiment, based on the above embodiment, Figure 5 As shown, the above S102 may include:

[0066] S201. Obtain the identification information of the first data.

[0067] The aforementioned identification information may be located in the header of the first data packet or in a specific field within the first data; alternatively, the identification information may not be included in the first data but reside in other data storage fields corresponding to the first data. For example, the first user equipment obtains the first data through a first message and then obtains the identification information of the first data through a second message corresponding to the first message; the user equipment obtains the first data through a first field in the first message and obtains the identification information of the first data through a second field in the first message. No limitation is made here. When the first user equipment sends the first data, it can extract the identification information at the location corresponding to the identification information of the first data through an adaptation layer or a PDCP layer.

[0068] S202: Determine, in the configuration information, an RLC channel that matches the identification information of the first data.

[0069] Based on the acquired identification information, the first user equipment may determine an RLC channel matching the identification information in the configuration information, and use the matching RLC channel as the RLC channel adopted when sending the first data.

[0070] S203: Use the RLC channel that matches the identification information to send the first data.

[0071] Furthermore, the first user equipment can map the first data to the matching RLC channel through the adaptation layer or PDCP layer, so that the RLC layer on the transmitting side of the first user equipment can obtain the first data through the RLC channel, perform segmentation, resegmentation and retransmission processing on the first data, and then send the processed data to the MAC layer through the logical channel. The MAC layer then sends the processed data to the PHY layer, and the PHY layer performs low-level encoding and decoding processing on the data before sending it out through the air interface.

[0072] In the above data transmission method, the first user equipment can obtain the RLC channel that matches the identification information of the first data, thereby clearly determining which RLC channel the first data corresponds to, so that the first user equipment can use the RLC channel to send the first data.

[0073] The above embodiments mainly introduce the configuration information used by the first user equipment when sending the first data. The following embodiments introduce the configuration information used by the first user equipment when it is in different nodes in the relay communication system.

[0074] In one embodiment, the first user equipment is a relay user equipment (UE) that acts as a relay between other user equipments and the network equipment. The other user equipment may be a third user equipment, and the first user equipment may be a relay UE that provides relay services from the network equipment to the third user equipment, such as... Figure 6 As shown.

[0075] The aforementioned first data refers to the data received by the first user equipment from the network device and to be sent to the third user equipment. The aforementioned configuration information can be used to indicate the RLC channel of the first PC5 interface used by the first user equipment when sending the first data.

[0076] The first user equipment (User Equipment) and the network device's gNB have a protocol layer facing the Uu interface. For the aforementioned first data, the receiving side of the first User Equipment is the Uu interface. The process of the first User Equipment receiving the first data can be as follows: the network device can process the data through the protocol layer of the network device's Uu interface, and then send the first data to the first User Equipment through the network device's Uu-PHY; after receiving the first data through the Uu-PHY, the first User Equipment performs low-level decoding processing on the data and sends it to the Uu-MAC layer. After processing by the Uu-MAC layer, the data is transmitted to the Uu-RLC layer through the logical channel between the Uu-MAC layer and the Uu-RLC layer. Then, after processing by the Uu-RLC layer, the data is transmitted to the ADAPT layer of the first User Equipment through the RLC channel between the Uu-RLC layer and the first User Equipment's ADAPT layer.

[0077] There is a protocol layer facing the PC5 interface between the first user equipment and the third user equipment. For the first data, the transmitting side of the first user equipment is the PC5 interface. The process of the first user equipment sending the first data to the third user equipment can be as follows: The ADAPT layer of the first user equipment can determine the RLC channel corresponding to the identification information of the first data according to the configuration information, that is, the data transmission channel between the adaptation layer and the PC5-RLC in the first user equipment; after the first user equipment maps the first data to the RLC channel through the adaptation layer, the PC5-RLC layer can process the received first data and send it to the PC5-MAC layer, and then send the processed data to the PC5-PHY layer through the PC5-MAC layer. In the PC5-PHY layer, the first data is encoded and decoded and then sent to the third user equipment through the air interface. After the third user equipment processes the first data through the PC5-PHY layer, it is processed sequentially through the PC5-MAC layer and the PC5-RLC layer of the third user equipment.

[0078] The identifier related to the RLC channel used when receiving the first data in the above identification information may be the identifier related to the RLC channel of the first Uu interface used when the first user equipment receives the first data.

[0079] The device identifier in the aforementioned identification information may include the device identifier of the third user equipment. Specifically, the device identifier of the third user equipment may include at least one of the following: the third user equipment's 5G-S-TMSI, I-RNTI, L2 ID, the identifier used by the first user equipment in the adaptation layer, and the sequence information in the SUI message.

[0080] The identifier of the bearer where the first data is located in the above identification information is the identifier of the Uu bearer of the first data.

[0081] The configuration information of the first user equipment mentioned above may include at least one of the following: the relevant identifier of the RLC channel of the first Uu interface used by the first user equipment when receiving the first data, the device identifier of the third user equipment, and the identifier of the Uu bearer of the first data.

[0082] The above data transmission method provides a configuration mode of an RLC channel for a first user equipment that relays from a network device to a third user equipment in a relay communication system.

[0083] In one embodiment, the first user equipment is a relay user equipment (UE) between other user equipments and the network device. The other user equipments may be second user equipments, and the first user equipment may be a relay UE providing relay services from the second user equipment to the network device, such as... Figure 7 As shown.

[0084] The aforementioned first data refers to the data received by the first user equipment from the second user equipment and to be transmitted to the network device. The aforementioned configuration information is used to indicate the RLC channel of the second Uu interface used by the first user equipment when transmitting the first data to the network device.

[0085] The first user equipment (User Equipment) and the second user equipment (User Equipment) share a protocol layer with a PC5 interface. For the first data, the receiving side of the first user equipment is the PC5 interface. The process of the second user equipment sending the first data to the first user equipment is as follows: The ADAPT layer of the second user equipment can determine the RLC channel of the first data on the sending side of the second user equipment based on configuration information; that is, the data transmission channel between the adaptation layer and the PC5-RLC in the second user equipment. After the second user equipment maps the first data to this RLC channel through the adaptation layer, the PC5-RLC layer processes the received first data and sequentially processes it through the PC5-MAC layer and the PC5-PHY layer in the second user equipment before sending it to the first user equipment over the air interface. After the first user equipment processes the first data through the PC5-PHY layer, it sequentially processes it through the PC5-MAC layer and the PC5-RLC layer, and then transmits the first data to the ADAPT adaptation layer.

[0086] There is a protocol layer facing the Uu interface between the first user equipment and the gNB of the network device. For the aforementioned first data, the transmitting side of the first user equipment is the Uu interface. The process of the first user equipment sending the first data to the network device can be as follows: The ADAPT layer of the first user equipment can determine the RLC channel corresponding to the identification information of the first data according to the configuration information, that is, the data transmission channel between the adaptation layer and the Uu-RLC in the first user equipment; after the first user equipment maps the first data to the Uu RLC channel through the adaptation layer, the Uu-RLC layer can process the received first data and send it to the Uu-MAC layer, and then send the processed data to the Uu-PHY layer through the Uu-MAC layer. In the Uu-PHY layer, the first data is encoded and decoded and then sent to the network device through the air interface. The network device can process the first data through the Uu-PHY layer, and then process it through the Uu-MAC layer and the Uu-RLC layer of the network device in sequence.

[0087] The RLC channel identifier used when receiving the first data in the above identification information is the RLC channel identifier of the second PC5 interface used by the first user equipment when receiving the first data.

[0088] The device identifier in the aforementioned identification information includes the device identifier of the second user equipment. Specifically, the device identifier of the second user equipment may include at least one of the following: the second user equipment's 5G-S-TMSI, I-RNTI, L2 ID, the identifier used by the first user equipment in the adaptation layer, and sequence information in the SUI message.

[0089] The identifier carried by the first data in the above identification information is the identifier carried by the Uu of the first data.

[0090] The configuration information of the first user equipment mentioned above may include at least one of the following: the relevant identifier of the RLC channel of the second PC5 interface used by the first user equipment when receiving the first data, the device identifier of the second user equipment, and the identifier of the Uu bearer of the first data.

[0091] The above data transmission method provides an RLC channel configuration method for the first user equipment in a relay communication system that provides relay from the second user equipment to the network equipment.

[0092] In one embodiment, the first user equipment can be a user equipment that communicates with a third user equipment via a relay UE, such as... Figure 8 shown.

[0093] The aforementioned first data can be data received by the first user equipment itself, from the network device, or from the second user equipment and intended to be transmitted to the third user equipment. The aforementioned configuration information can be used to instruct the first user equipment to use the RLC channel of the third PC5 interface when transmitting the first data to the Relay UE.

[0094] The first user equipment (User Equipment) and the Relay UE share a protocol layer with a PC5 interface. For the first data, the receiving side of the first User Equipment is the PC5 interface. This first data can be the first User Equipment's own data, data received from a network device, or data received from a second User Equipment; no limitation is made here. Taking the first data as the first User Equipment's own data as an example, the process of the first User Equipment sending the first data to the third User Equipment can be as follows: The ADAPT layer of the first User Equipment can determine the RLC channel corresponding to the identifier information of the first data based on the configuration information; that is, the data transmission channel between the adaptation layer in the first User Equipment and the PC5-RLC on the sending side. After the first User Equipment maps the first data to this RLC channel through the adaptation layer, the PC5-RLC layer on the sending side can process the received first data and sequentially process it through the PC5-MAC layer and PC5-PHY layer on the sending side of the first User Equipment, and then send it to the Relay UE through the air interface. After the Relay UE processes the first data through the PC5-PHY layer on the receiving side, it processes the data through the PC5-MAC layer and the PC5-RLC layer on the receiving side of the Relay UE in sequence, and then transmits the first data to the adaptation layer ADAPT.

[0095] The Relay UE and the third user equipment have a protocol layer facing the PC5 interface. The ADAPT layer of the Relay UE can determine the RLC channel corresponding to the identifier information of the first data based on the configuration information; this is the data transmission channel between the adaptation layer in the Relay UE and the PC5-RLC on the transmitting side. After the Relay UE maps the first data to this RLC channel through the adaptation layer, the PC5-RLC layer on the transmitting side can process the received first data and then process it sequentially through the PC5-MAC layer and PC5-PHY layer on the transmitting side of the Relay UE before transmitting it to the third user equipment via the air interface. The third user equipment can process the first data through the PC5-PHY layer on the receiving side, then process it sequentially through the PC5-MAC layer and PC5-RLC layer on the receiving side of the third user equipment before transmitting the first data to the ADAPT layer.

[0096] The identifier of the first data in the above-mentioned identification information can be the identifier of the PC5 carrier of the first data.

[0097] The device identifier in the aforementioned identification information may include the device identifier of the third user equipment. Specifically, the device identifier of the third user equipment may include at least one of the following: the third user equipment's 5G-S-TMSI, I-RNTI, L2 ID, the identifier used by the first user equipment in the adaptation layer, and the sequence information in the SUI message.

[0098] The configuration information of the first user equipment mentioned above may include at least one of the following: the device identifier of the third user equipment and the identifier of the PC5 bearer of the first data.

[0099] The above data transmission method provides an RLC channel configuration method for the first user equipment in a relay communication system to communicate with the third user equipment through the Relay UE.

[0100] In one embodiment, the first user equipment is a Relay UE that provides relaying from the second user equipment to the third user equipment, such as Figure 9 As shown.

[0101] The aforementioned first data is data from the first user equipment itself or data obtained from the second user equipment to be sent to the third user equipment. The aforementioned configuration information can be used to instruct the first user equipment to use the RLC channel of the fourth PC5 interface when sending the first data to the third user equipment.

[0102] Taking the aforementioned first data as data obtained by the first user equipment from the second user equipment as an example, the first user equipment and the second user equipment have a protocol layer facing the PC5 interface. For the first data, the receiving side of the first user equipment is the PC5 interface. The process of the first user equipment receiving the first data from the second user equipment can be as follows: the second user equipment sends the first data to the first user equipment through the air interface. After the first user equipment processes the first data through the PC5-PHY layer, it processes it sequentially through the PC5-MAC layer and the PC5-RLC layer of the first user equipment, and then transmits the first data to the adaptation layer ADAPT.

[0103] The first user equipment (User Equipment) and the third user equipment (User Equipment) share a protocol layer with a PC5 interface. The ADAPT layer of the first user equipment can determine the RLC channel corresponding to the identifier information of the first data based on configuration information; this is the data transmission channel between the adaptation layer and the PC5-RLC layer on the transmitting side of the first user equipment. After the first user equipment maps the first data to this RLC channel through the adaptation layer, the PC5-RLC layer on the transmitting side processes the received first data and sequentially processes it through the PC5-MAC layer and PC5-PHY layer on the transmitting side of the first user equipment before transmitting it to the third user equipment via the air interface. The third user equipment can process the first data through the PC5-PHY layer on the receiving side, and then sequentially process it through the PC5-MAC layer and PC5-RLC layer on the receiving side of the third user equipment before transmitting the first data to the ADAPT layer.

[0104] The identifier of the first data in the above-mentioned identification information can be the identifier of the PC5 carrier of the first data.

[0105] The RLC channel identifier used when receiving the first data in the above identification information can be the RLC channel identifier of the fifth PC5 interface used by the Relay UE when obtaining the first data from the second user equipment.

[0106] The device identifiers in the aforementioned identification information include the device identifiers of the second user equipment and the third user equipment. The device identifier of the third user equipment may include at least one of the following: the third user equipment's 5G-S-TMSI, I-RNTI, L2 ID, the identifier used by the first user equipment in the adaptation layer, and sequence information in the SUI message. Similarly, the device identifier of the second user equipment may include at least one of the following: the second user equipment's 5G-S-TMSI, I-RNTI, L2 ID, the identifier used by the first user equipment in the adaptation layer, and sequence information in the SUI message.

[0107] The configuration information of the first user equipment mentioned above may include at least one of the following: the relevant identifier of the RLC channel of the fifth PC5 interface used by the first user equipment when receiving the first data, the device identifier of the second user equipment, the device identifier of the third user equipment, and the identifier of the PC5 bearer of the first data.

[0108] The above data transmission method provides a configuration mode of an RLC channel for a first user equipment that provides relaying for a second user equipment and a third user equipment in a relay communication system.

[0109] It should be understood that, although Figure 3-Figure 4 The steps in the flowchart are shown in sequence as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified in this document, there is no strict order restriction for the execution of these steps, and these steps can be executed in other orders. In addition, Figure 3-Figure 4 At least some of the steps in the process may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be executed in turn or alternately with other steps or at least some of the sub-steps or stages of other steps.

[0110] In one embodiment, a data transmission device is provided, such as... Figure 10 As shown, the above-mentioned device includes:

[0111] The transmitting module 10 is used to transmit first data according to configuration information; the first data includes data to be transmitted to the third user equipment from the first user equipment itself, data received from the network device or data received from the second user equipment, and / or data received by the first user equipment from the second user equipment to be transmitted to the network device; the configuration information is used to indicate the Radio Link Control Layer (RLC) channel used by the first user equipment when transmitting the first data.

[0112] In one embodiment, based on the above embodiments, the configuration information includes the correspondence between the RLC channel and the identification information of the first data.

[0113] In one embodiment, based on the above embodiments, the identification information of the first data includes the device identifier of the second user equipment and / or the third user equipment.

[0114] In one embodiment, based on the above embodiments, the device identifier includes at least one of the following: a globally unique temporary identifier 5G-S-TMSI of the user equipment, a wireless network temporary identifier I-RNTI, a layer 2 identifier L2 ID, an identifier used by the first user equipment in the adaptation layer, and sequence information in the sidelink user information SUI message.

[0115] In one embodiment, based on the above embodiments, the identification information of the first data includes the identifier of the carrier on which the first data is located.

[0116] In one embodiment, based on the above embodiments, the identification information of the first data includes the relevant identifier of the RLC channel used by the first user equipment when receiving the first data.

[0117] In one embodiment, based on the above embodiments, the relevant identifier of the RLC channel used when receiving the first data includes at least one of the following: the Radio Link Control Layer Bearer ID used when receiving the first data, and the Logical Channel ID (LCID) corresponding to the RLC channel used when receiving the first data.

[0118] In one embodiment, based on the above embodiments, the first user equipment is a relay user equipment (Relay UE) between other user equipment and network equipment.

[0119] In one embodiment, based on the above embodiment, the first user equipment is a relay UE that provides relay from the network device to the third user equipment, and the first data is data received by the first user equipment from the network device to be sent to the third user equipment; the configuration information is used to indicate the RLC channel of the first direct communication interface PC5 interface used by the first user equipment when sending the first data.

[0120] In one embodiment, based on the above embodiment, the relevant identifier of the RLC channel used when receiving the first data in the identification information is the relevant identifier of the RLC channel of the first cellular network communication interface Uu interface used by the first user equipment when receiving the first data.

[0121] In an embodiment, based on the above embodiment, the device identification in the identification information includes the device identification of the third user equipment.

[0122] In one embodiment, based on the above embodiment, the first user equipment is a relay UE that provides relay from the second user equipment to the network device, and the first data is data received by the first user equipment from the second user equipment and to be sent to the network device; the configuration information is used to indicate the RLC channel of the second Uu interface used by the first user equipment when sending the first data to the network device.

[0123] In one embodiment, based on the above embodiment, the relevant identifier of the RLC channel used when receiving the first data in the identification information is the relevant identifier of the RLC channel of the second PC5 interface used by the first user equipment when receiving the first data.

[0124] In an embodiment, based on the above embodiment, the device identification in the identification information includes the device identification of the second user equipment.

[0125] In one embodiment, based on the above embodiment, the identifier carried by the first data in the identification information is the identifier carried by the Uu of the first data.

[0126] In one embodiment, based on the above embodiments, the first user equipment is a user equipment that communicates with a third user equipment via a relay UE.

[0127] In one embodiment, based on the above embodiment, the first data is data to be sent to the third user equipment, received from the network device or received from the second user equipment, and the configuration information is used to indicate the RLC channel of the third PC5 interface used by the first user equipment when sending the first data to the Relay UE.

[0128] In one embodiment, based on the above embodiment, the identifier of the bearer where the first data is located in the identification information is the identifier of the PC5 bearer of the first data.

[0129] In one embodiment, based on the above embodiments, the device identifier in the identification information includes the device identifier of a third user device.

[0130] In one embodiment, based on the above embodiments, the first user equipment is a relay UE that provides relay from the second user equipment to the third user equipment.

[0131] In one embodiment, based on the above embodiment, the first data is either the Relay UE's own data or data obtained from the second user equipment to be sent to the third user equipment; the configuration information is used to indicate the RLC channel of the fourth PC5 interface used by the first user equipment when sending the first data to the third user equipment.

[0132] In one embodiment, based on the above embodiment, the identifier of the bearer where the first data is located in the identification information is the identifier of the PC5 bearer of the first data.

[0133] In one embodiment, based on the above embodiment, the relevant identifier of the RLC channel used when receiving the first data in the identification information is the relevant identifier of the RLC channel of the fifth PC5 interface used by the Relay UE when obtaining the first data from the second user equipment.

[0134] In one embodiment, based on the above embodiments, the device identifier in the identification information includes the device identifier of the second user equipment and the device identifier of the third user equipment.

[0135] In one embodiment, based on the above embodiment, Figure 11 As shown, the above-mentioned device also includes a receiving module 20, which is used to receive configuration information sent by the network device.

[0136] In one embodiment, based on the above embodiments, when the bearer where the first data is located is SRB0 and / or SRB1, the configuration information is the configuration information preset by the protocol.

[0137] In one embodiment, based on the above embodiments, when the bearer where the first data is located is SRB2 or DRB, the configuration information is that the first user equipment receives information sent by the network device.

[0138] In one embodiment, based on the above embodiment, Figure 12 As shown, the above-mentioned sending module 10 includes:

[0139] Acquisition unit 101 is used to acquire the identification information of the first data;

[0140] Matching unit 102 is used to determine, in the configuration information, the RLC channel that matches the identification information of the first data;

[0141] The transmitting unit 103 is used to transmit the first data using an RLC channel that matches the identification information.

[0142] The data transmission device provided in the above embodiments has a similar implementation principle and technical effect to the above method embodiments, and will not be described again here.

[0143] The division of the various modules in the above-described data transmission device is only for illustrative purposes. In other embodiments, the data transmission device can be divided into different modules as needed to complete all or part of the functions of the above-described data transmission device.

[0144] For the specific definition of the data transmission device, please refer to the definition of the data transmission method above and will not be repeated here. Each module in the above-mentioned data transmission device can be implemented in whole or in part by software, hardware, or a combination thereof. Each of the above-mentioned modules can be embedded in or independent of the processor in the computer device in hardware form, or can be stored in the memory of the computer device in software form, so that the processor can call and execute the corresponding operations of each of the above modules.

[0145] In one embodiment, a user equipment is provided, the internal structure of which can be shown as follows: Figure 13 As shown. The user device includes a processor, a memory, a network interface, a display screen and an input device connected via a system bus. The processor of the user device is used to provide computing and control capabilities. The memory of the user device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The network interface of the user device is used to communicate with an external user device via a network connection. When the computer program is executed by the processor, a data transmission method is implemented. The display screen of the user device can be a liquid crystal display screen or an electronic ink display screen, and the input device of the user device can be a touch layer covering the display screen, or a button, trackball or touchpad provided on the user device housing, or an external keyboard, touchpad or mouse, etc.

[0146] Those skilled in the art will understand that Figure 13 The structure shown is merely a block diagram of a portion of the structure related to the solution of this application and does not constitute a limitation on the network device or terminal to which the solution of this application is applied. Specific network devices or terminals may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0147] The various modules in the apparatus provided in this application embodiment can be implemented in the form of a computer program. This computer program can run on a terminal or server. The program modules constituted by this computer program can be stored in the memory of the terminal or server. When the computer program is executed by a processor, it implements the steps of the method described in the embodiments of this application.

[0148] In one embodiment, a user equipment is provided, including a transmitter, a memory, and a processor. The memory stores a computer program. The transmitter, in cooperation with the processor, transmits first data according to configuration information. The first data includes data to be transmitted to a third user equipment, data received by the first user equipment itself from a network device or from a second user equipment, and / or data received by the first user equipment from a second user equipment to be transmitted to a network device. The configuration information is used to indicate the Radio Link Control (RLC) channel used by the first user equipment when transmitting the first data.

[0149] The user equipment provided in the above embodiments has a similar implementation principle and technical effect to the above method embodiments, and will not be described again here.

[0150] This application also provides a computer-readable storage medium. One or more non-volatile computer-readable storage media containing computer-executable instructions, which, when executed by one or more processors, cause the processors to perform the steps of the above-described data transmission method.

[0151] The computer-readable storage medium provided in the above embodiments has a similar implementation principle and technical effect to the above method embodiments, and will not be described again here.

[0152] A computer program product comprising instructions, when running on a computer, enables the computer to perform the above data transmission method.

[0153] Any references to memory, storage, databases, or other media used in this application may include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory may include random access memory (RAM), which is used as external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), dual data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), RAMbus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and RAMbus dynamic RAM (RDRAM).

[0154] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A data transmission method, It is characterized in that include: The first user equipment sends first data according to the configuration information; the first data includes data of the first user equipment itself, data received from the network equipment or data received from the second user equipment to be sent to the third user equipment, and / or data received by the first user equipment from the second user equipment to be sent to the network equipment; The configuration information is used to indicate a radio link control layer RLC channel used by the first user equipment to send the first data.

2. The method according to claim 1, It is characterized in that The configuration information includes a correspondence between the RLC channel and identification information of the first data.

3. The method according to claim 2, It is characterized in that The identification information of the first data includes a device identification of the second user equipment and / or the third user equipment.

4. The method according to claim 3, It is characterized in that The device identifier includes at least one of a layer 2 identifier L2ID of the user equipment and an identifier used by the first user equipment in an adaptation layer.

5. The method according to claim 2, It is characterized in that The identification information of the first data includes an identification of a carrier on which the first data is located.

6. The method according to any one of claims 2 to 5, It is characterized in that The first user equipment is a relay user equipment Relay UE between other user equipments and a network device.

7. The method according to claim 6, It is characterized in that The first user equipment is a Relay UE that provides relay from the network device to the third user equipment, and the first data is data received by the first user equipment from the network device and is to be sent to the third user equipment; the configuration information is used to indicate the RLC channel of the first direct communication interface PC5 interface used by the first user equipment to send the first data.

8. The method according to claim 7, It is characterized in that The device identification in the identification information includes the device identification of the third user equipment.

9. The method according to claim 6, It is characterized in that The first user equipment is a Relay UE that provides relay from the second user equipment to the network device, and the first data is data received by the first user equipment from the second user equipment and to be sent to the network device; The configuration information is used to indicate an RLC channel of a second Uu interface used when the first user equipment sends the first data to a network device.

10. The method according to claim 9, It is characterized in that The device identification in the identification information includes the device identification of the second user equipment.

11. The method according to claim 6, It is characterized in that The identifier of the bearer where the first data is located in the identification information is the identifier of the Uu bearer of the first data.

12. The method according to any one of claims 2 to 5, It is characterized in that The first user equipment is a user equipment that communicates with a third user equipment through a relay of a RelayUE.

13. The method according to claim 12, It is characterized in that The first data is data of the first user equipment itself, received from a network device or received from a second user equipment and to be sent to the third user equipment, and the configuration information is used to indicate the RLC channel of the third PC5 interface used by the first user equipment to send the first data to the Relay UE.

14. The method according to claim 13, It is characterized in that The identifier of the bearer where the first data is located in the identification information is the identifier of the PC5 bearer of the first data.

15. The method according to any one of claims 2 to 5, It is characterized in that The first user equipment is a Relay UE that provides relay from the second user equipment to the third user equipment.

16. The method according to claim 15, It is characterized in that The first data is the Relay UE's own data or data obtained from the second user equipment to be sent to the third user equipment; the configuration information is used to indicate the RLC channel of the fourth PC5 interface used when the first user equipment sends the first data to the third user equipment.

17. The method according to claim 16, It is characterized in that The identifier of the bearer where the first data is located in the identification information is the identifier of the PC5 bearer of the first data.

18. The method according to any one of claims 1 to 17, It is characterized in that The method further comprises: The first user equipment receives the configuration information sent by the network equipment.

19. The method according to any one of claims 1 to 17, It is characterized in that When the bearer of the first data is SRB0 and / or SRB1, the configuration information is the configuration information preset by the protocol; or, when the bearer of the first data is SRB2 or DRB, the configuration information is the information sent by the network device received by the first user device.

20. The method according to any one of claims 2 to 17, It is characterized in that The sending of the first data according to the configuration information includes: Acquire identification information of the first data; In the configuration information, determining an RLC channel matching the identification information of the first data; The first data is sent using an RLC channel matching the identification information.

21. A data transmission device, It is characterized in that Applied to a first user device, comprising: a sending module, configured to send first data according to the configuration information; the first data includes data of the first user equipment itself, data received from the network equipment or data received from the second user equipment to be sent to the third user equipment, and / or data received by the first user equipment from the second user equipment to be sent to the network equipment; The configuration information is used to indicate a radio link control layer RLC channel used by the first user equipment to send the first data.

22. A user equipment comprising a transceiver, a memory and a processor, wherein the memory stores a computer program, It is characterized in that When the processor executes the above-mentioned computer program in cooperation with the transceiver, the steps of the method described in any one of claims 1-20 are implemented.

Images