WO2023179668A1 - 数据传输方法及装置、终端及网络侧设备 - Google Patents

数据传输方法及装置、终端及网络侧设备 Download PDF

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Publication number
WO2023179668A1
WO2023179668A1 PCT/CN2023/083082 CN2023083082W WO2023179668A1 WO 2023179668 A1 WO2023179668 A1 WO 2023179668A1 CN 2023083082 W CN2023083082 W CN 2023083082W WO 2023179668 A1 WO2023179668 A1 WO 2023179668A1
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WIPO (PCT)
Prior art keywords
path
terminal
side device
network side
data transmission
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PCT/CN2023/083082
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English (en)
French (fr)
Inventor
郑倩
刘佳敏
迪 阿达姆布巴卡 金巴
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维沃移动通信有限公司
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Publication of WO2023179668A1 publication Critical patent/WO2023179668A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/04—Arrangements for maintaining operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/10—Flow control between communication endpoints
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/04—Terminal devices adapted for relaying to or from another terminal or user

Definitions

  • This application belongs to the field of communication technology, and specifically relates to a data transmission method and device, a terminal and network side equipment.
  • a single path connection can be established between the terminal and the network side device.
  • a direct connection path can be established with the network side device, or an indirect connection path can be established with the network side device.
  • Single-path connections have limited throughput, and reliability needs to be improved.
  • Embodiments of the present application provide a data transmission method and device, terminal and network-side equipment, which can improve the throughput and reliability of communication transmission.
  • the first aspect provides a data transmission method, including:
  • the first terminal transmits user plane data and/or control plane data with the network side device through multiple paths;
  • the plurality of paths include at least a first path and a second path, the first path is a direct path for direct communication between the first terminal and the network side device, and the second path is the third path.
  • the first path is an indirect path through which the first terminal communicates with the network-side device through the second terminal
  • the second path is a path through which the first terminal directly communicates with the network-side device. Direct path.
  • a data transmission device including:
  • the first transmission module is used to transmit user plane data and/or control plane data with network side equipment through multiple paths;
  • the plurality of paths include at least a first path and a second path, the first path is a direct path for direct communication between the first terminal and the network side device, and the second path is the third path.
  • the first path is an indirect path through which the first terminal communicates with the network-side device through the second terminal
  • the second path is a path through which the first terminal directly communicates with the network-side device. Direct path.
  • a data transmission method including:
  • the network side device transmits user plane data and/or control plane data with the first terminal through multiple paths;
  • the plurality of paths include at least a first path and a second path, the first path is a direct path for direct communication between the first terminal and the network side device, and the second path is the third path.
  • the first path is an indirect path through which the first terminal communicates with the network-side device through the second terminal
  • the second path is a path through which the first terminal directly communicates with the network-side device. Direct path.
  • a data transmission device including:
  • a second transmission module configured to transmit user plane data and/or control plane data with the first terminal through multiple paths
  • the plurality of paths include at least a first path and a second path, the first path is a direct path for direct communication between the first terminal and the network side device, and the second path is the third path.
  • the first path is an indirect path through which the first terminal communicates with the network-side device through the second terminal
  • the second path is a path through which the first terminal directly communicates with the network-side device. Direct path.
  • a terminal in a fifth aspect, includes a processor and a memory.
  • the memory stores programs or instructions that can be run on the processor.
  • the program or instructions are executed by the processor, the following implementations are implemented: The steps of the method described in one aspect.
  • a terminal including a processor and a communication interface, wherein the communication interface is used to transmit user plane data and/or control plane data with a network side device through multiple paths;
  • the plurality of paths include at least a first path and a second path
  • the first path is the The direct connection path through which the first terminal directly communicates with the network side device
  • the second path is an indirect connection path through which the first terminal communicates with the network side device through the second terminal
  • the first path is an indirect path through which the first terminal communicates with the network-side device through the second terminal
  • the second path is a path through which the first terminal directly communicates with the network-side device. Direct path.
  • a network side device in a seventh aspect, includes a processor and a memory.
  • the memory stores programs or instructions that can be run on the processor.
  • the program or instructions are executed by the processor.
  • a network side device including a processor and a communication interface, wherein the communication interface is used to transmit user plane data and/or control plane data with the first terminal through multiple paths;
  • the plurality of paths include at least a first path and a second path, the first path is a direct path for direct communication between the first terminal and the network side device, and the second path is the third path.
  • the first path is an indirect path through which the first terminal communicates with the network-side device through the second terminal
  • the second path is a path through which the first terminal directly communicates with the network-side device. Direct path.
  • a ninth aspect provides a data transmission system, including: a network side device and a terminal.
  • the network side device can be used to perform the steps of the data transmission method described in the third aspect.
  • the terminal can be used to perform the steps of the first aspect. The steps of the data transmission method described in this aspect.
  • a readable storage medium is provided. Programs or instructions are stored on the readable storage medium. When the programs or instructions are executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method are implemented as described in the first aspect. The steps of the method described in the third aspect.
  • a chip in an eleventh aspect, includes a processor and a communication interface.
  • the communication interface is coupled to the processor.
  • the processor is used to run programs or instructions to implement the method described in the first aspect. method, or implement a method as described in the third aspect.
  • a computer program/program product is provided, the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement as described in the first aspect
  • a multi-path connection can be established between the first terminal and the network side device, and the same or different signaling and service data can be transmitted between the first terminal and the network side device through multiple paths.
  • the paths can thus improve the throughput of communication transmission, and when the link quality of one of the paths is poor, other paths with better link quality can be used to ensure the reliability of transmission.
  • Figure 1 is a block diagram of a wireless communication system applicable to the embodiment of the present application.
  • Figure 2 is a schematic diagram of the relay scenario
  • FIG. 3 is a schematic diagram of the Sidelink Relay (SL relay) architecture
  • Figure 4 is a schematic diagram of the non-SL relay architecture
  • Figure 5 is a schematic flow chart of the first terminal-side data transmission method according to the embodiment of the present application.
  • Figure 6 is a schematic flowchart of a network-side device-side data transmission method according to an embodiment of the present application.
  • Figure 7 is a schematic structural diagram of a first terminal-side data transmission device according to an embodiment of the present application.
  • Figure 8 is a schematic structural diagram of a network-side device-side data transmission device according to an embodiment of the present application.
  • Figure 9 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • Figure 10 is a schematic structural diagram of a terminal according to an embodiment of the present application.
  • Figure 11 is a schematic structural diagram of a network side device according to an embodiment of the present application.
  • first, second, etc. in the description and claims of this application are used to distinguish similar objects and are not used to describe a specific order or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances so that the embodiments of the present application can be practiced in sequences other than those illustrated or described herein, and that "first" and “second” are distinguished objects It is usually one type, and the number of objects is not limited.
  • the first object can be one or multiple.
  • and/or indicates at least one of the connected objects. The character “/” generally indicates that the related objects are in an "or” relationship.
  • LTE Long Term Evolution
  • LTE-Advanced, LTE-A Long Term Evolution
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency Division Multiple Access
  • SC-FDMA Single-carrier Frequency Division Multiple Access
  • system and “network” in the embodiments of this application are often used interchangeably, and the described technology can be used not only for the above-mentioned systems and radio technologies, but also for other systems and radio technologies.
  • NR New Radio
  • the following description describes a New Radio (NR) system for example purposes, and uses NR terminology in much of the following description, but these techniques can also be applied to applications other than NR system applications, such as 6th Generation , 6G) communication system.
  • NR New Radio
  • FIG. 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable.
  • the wireless communication system includes a terminal 11 and a network side device 12.
  • the terminal 11 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), or a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), a palmtop computer, a netbook, or a super mobile personal computer.
  • Tablet Personal Computer Tablet Personal Computer
  • laptop computer laptop computer
  • PDA Personal Digital Assistant
  • PDA Personal Digital Assistant
  • UMPC ultra-mobile personal computer
  • UMPC mobile Internet device
  • MID mobile Internet Device
  • AR augmented reality
  • VR virtual reality
  • robots wearable devices
  • WUE Vehicle User Equipment
  • PUE Pedestrian User Equipment
  • smart home home equipment with wireless communication functions, such as refrigerators, TVs, washing machines or furniture, etc.
  • game consoles personal computers (personal computer, PC), teller machine or self-service machine and other terminal-side devices.
  • Wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets) bracelets, smart anklets, etc.), smart wristbands, smart clothing, etc.
  • the network side device 12 may include an access network device or a core network device, where the access network device may also be called a wireless access network device or a radio access network (Radio Access Network). RAN), radio access network function or radio access network unit.
  • Access network equipment may include a base station, a Wireless Local Area Network (WLAN) access point or a WiFi node, etc.
  • WLAN Wireless Local Area Network
  • the base station may be called a Node B, an Evolved Node B (eNB), an access point, a base transceiver station ( Base Transceiver Station (BTS), radio base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), home B-node, home evolved B-node, transmitting and receiving point ( Transmitting Receiving Point (TRP) or some other appropriate terminology in the field, as long as the same technical effect is achieved, the base station is not limited to specific technical terms. It should be noted that in the embodiment of this application, only in the NR system The base station is introduced as an example, and the specific type of base station is not limited.
  • Relay technology in wireless communication systems is to add one or more relay nodes between the base station and the terminal, which is responsible for forwarding wireless signals one or more times, that is, the wireless signal must go through multiple hops to reach it. terminal.
  • Wireless relay technology can not only expand cell coverage and make up for cell coverage blind spots, but can also increase cell capacity through spatial resource reuse.
  • Relay technology can also overcome penetration loss and improve indoor coverage quality.
  • wireless relay divides a base station-terminal link into two links: base station-relay station and relay station-terminal, thereby having the opportunity to replace a poor quality link with two links. A better quality link to obtain higher link capacity and better coverage.
  • the Relay currently supported is UE-to-Network relay, that is, one end of the Relay is connected to the UE and the other end is connected to the network side.
  • the UE connected to Relay is called remote UE (Remote UE).
  • FIG. 2 A typical relay scenario is shown in Figure 2. This is a typical UE-to-Network scenario.
  • the Remote UE needs to transmit data with the network side, but due to poor coverage, the Relay UE is found to be the relay.
  • the Relay UE The Uu interface is between the UE and the base station, and the sidelink (PC5) interface is between the Relay UE and Remote UE.
  • PC5 sidelink
  • Relay UE is open and can serve any Remote UE.
  • the Remote UE Radio Resource Control (RRC) connection establishment process includes the following steps:
  • Step 1 Remote UE and Relay UE perform discovery process and then establish PC5RRC connection.
  • Step 2 The Remote UE sends an RRC Setup Request message to the base station, and the base station replies an RRC Setup message to the Remote UE. Specifically, these two messages are forwarded to the base station or Remote UE in Relay UE.
  • Step 3 A dedicated bearer for signaling radio bearer 1 (SRB1) is established between the base station and remote UE.
  • the dedicated bearer for remote UE SRB1 is composed of PC5 (between remote UE and Relay UE) and Uu (between Relay UE and base station). (between) two sections of Radio Link Control (Radio Link Control, RLC) channels. Specifically, two RLC channels are used for Remote UE to send/receive SRB1 type RRC messages between the Remote UE and the base station.
  • RLC Radio Link Control
  • Step 4 The Remote UE sends a Radio Resource Control Setup Complete (RRC Setup Complete) message to the base station. Specifically, this message is forwarded to the base station in Relay UE.
  • RRC Setup Complete Radio Resource Control Setup Complete
  • Step 5 Activate security between Remote UE and base station.
  • Step 6 Establish an SRB2/Data Radio Bearer (DRB) dedicated bearer between the base station and Remote UE.
  • the Remote UE SRB2/DRB dedicated bearer consists of PC5 (between Remote UE and Relay UE) and Uu (Relay UE and Relay UE). Between base stations) consists of two sections of RLC channels. Specifically, the two RLC channels are used for the Remote UE to send/receive SRB2 type RRC/NAS messages and uplink and downlink service data between the base station and the Remote UE.
  • multipath means that the Remote UE establishes an indirect path and a direct path at the same time, as shown in Figure 3.
  • connection between two UEs is not a sidelink (PC5) interface. It is assumed that the interface between them is a wired connection or an ideal inter-UE connection.
  • Multipath here means that Primary UE has established indirect path and direct path at the same time, as shown in Figure 4.
  • indirect path is translated as indirect path, which refers to the wireless link through which Remote UE (or Primary UE) establishes RRC connection with the base station through Relay UE (or Secondary UE) and the Uu air interface of Relay UE (or Secondary UE). .
  • Direct path is translated as direct path, which refers to the wireless link through which Remote UE (or Primary UE) establishes an RRC connection with the base station through its own Uu air interface.
  • This embodiment of the present application provides a data transmission method, as shown in Figure 5, including:
  • Step 101 The first terminal transmits user plane data and/or control plane data with the network side device through multiple paths;
  • the plurality of paths include at least a first path and a second path, the first path is a direct path for direct communication between the first terminal and the network side device, and the second path is the third path.
  • the first path is an indirect path through which the first terminal communicates with the network-side device through the second terminal
  • the second path is a path through which the first terminal directly communicates with the network-side device. Direct path.
  • a multi-path connection can be established between the first terminal and the network-side device, and different signaling and service data can be transmitted between the first terminal and the network-side device through multiple paths, which can improve the efficiency of communication transmission.
  • Throughput and when the link quality of one path is poor, other paths with better link quality can be used to ensure transmission reliability.
  • the first terminal may be a Remote UE or a Primary UE (Primary UE), and the second terminal may be a Relay UE or a Secondary UE (Secondary UE).
  • Primary UE Primary UE
  • Secondary UE Secondary UE
  • the method before the first terminal transmits user plane data and/or control plane data with the network side device through multiple paths, the method includes:
  • the first terminal communicates with the network side device through the first path;
  • the first terminal When the path addition condition is met, the first terminal sends a multipath addition request message to the network side device through the existing first path, requesting to add the second path.
  • the path adding conditions may be agreed upon by the protocol or configured by the network side device or preconfigured by the network side device.
  • the path adding process can also be understood as a terminal collaboration process. Therefore, it can also be equivalently described as: when the terminal collaboration conditions are met, the first terminal sends a terminal collaboration message to the network side device through the existing first path. A request message requesting cooperation with the second terminal.
  • the multi-path addition request message is path addition request
  • the terminal collaboration request message is UE aggregation request.
  • the first terminal has established RRC with the network side device through a direct path.
  • Connection and related user plane (User Plane, UP) path the first terminal can use the existing direct connection path to establish a non-direct connection path with the network side device.
  • the remote UE or primary UE when the remote UE or primary UE is inside the cell or the link conditions are good, for example, the reference signal receiving power (RSRP) of the first UE to the serving cell is not lower than a certain threshold, then If the first UE has data transmission requirements, it can directly establish an RRC connection with the serving cell and establish a DRB path, that is, a direct CP+UP path is established, and can communicate with the network side device through the direct path (i.e., the first path). Communication, transmitting control plane data and user plane data.
  • RSRP reference signal receiving power
  • Step a1 The first terminal determines whether the preset path addition conditions are met.
  • the path addition conditions specifically include at least one of the following:
  • the size of the data buffer of the first terminal is greater than or equal to the first threshold
  • the service reliability (reliability) requirement of the first terminal is greater than or equal to the second threshold
  • the upper layer of the first terminal instructs the first terminal to transmit the service through the second path or through the first path and the second path, where the upper layers are the first terminal internal RRC
  • RRC Radio Resource Control
  • the at least one candidate terminal includes the second terminal.
  • the link quality of at least one candidate terminal satisfies the preset communication conditions including at least one of the following:
  • the signal quality between the candidate terminal and the first terminal meets the preset communication conditions
  • the signal quality of the serving cell of the candidate terminal meets the preset communication conditions.
  • paging message that is, send a first paging indication to the first terminal so as to indicate the path establishment method of the UE in the first paging indication, carrying at least the following information: one:
  • the path established is instructed to be a direct path or an indirect path;
  • instructing the first terminal to establish a multipath it is instructed to trigger the indirect path addition process through the existing direct connection data or to trigger the direct connection path addition process through the existing indirect connection data or to establish the direct connection path at the same time. and indirect paths.
  • the first paging indication is 1-bit encoding, it can be distinguished: single path (either direct or indirect path), multi-path (both direct and indirect path); if the first paging indication is 2-bit encoding, it can be distinguished: single path (direct path only), single path (indirect path only), multi-path (both direct and indirect path).
  • the arrival of downlink data may be caused by the base station paging the terminal.
  • a bearer is established between the base station and the terminal through an RRC message, and data is sent on the established bearer.
  • Step a2 When the first terminal determines that the preset path addition conditions are met, the first terminal sends a multipath addition request message (aggregation request) to the network side device through the existing first path, requesting to add the second path;
  • a multipath addition request message aggregation request
  • the existing message can be used to carry the multi-path addition request message, or a new multi-path addition request message can be defined.
  • the above-mentioned existing messages include at least one of the following: terminal assistance information (UE Assistance Information, UAI), secondary link terminal information (Sidelink UE Information, SUI), measurement report (Measurement report), radio resource control establishment completion (RRC Setup Complete), Radio Resource Control Recovery Complete (RRC Resume Complete) message, Radio Resource Control Reconstruction Complete (RRC Resume Complete) message.
  • the multipath addition request message may also include first information, and the first information includes at least one of the following:
  • the signal quality between the first terminal and the candidate terminal is the signal quality between the first terminal and the candidate terminal
  • the identification information of the candidate terminal is the identification information of the candidate terminal.
  • the serving cell identification information of the candidate terminal is the serving cell identification information of the candidate terminal.
  • the signal quality of the serving cell of the candidate terminal is the signal quality of the serving cell of the candidate terminal.
  • the network side device can be helped to select Select the second terminal to establish a link between the first terminal and the second terminal and ensure that the link has good communication quality.
  • Step a3 The first terminal receives the multipath addition configuration message (aggregation response) sent by the network side device;
  • existing messages can be used to carry the multipath addition configuration message, or a new multipath addition configuration message can be defined.
  • Existing messages include RRC synchronous reconfiguration (reconfiguration with sync) messages.
  • the multipath addition configuration message includes at least one of the following:
  • the identification information of the second terminal is the identification information of the second terminal.
  • the serving cell identification information of the second terminal is the serving cell identification information of the second terminal.
  • the first indication information is used to instruct a path switching operation or a path adding operation.
  • the first indication information may use 1 bit, or a new information element may be defined to carry the first indication information.
  • the path switching operation may be indicated when the first indication information is 0, and the path switching operation may be indicated when the first indication information is 1; or the path switching operation may be indicated when the first indication information is 1, and the path switching operation may be indicated when the first indication information is 1.
  • the indication information is 0, it indicates adding a path;
  • the network side device can configure the rules for user plane data transmission and/or control plane data transmission, or perform the transmission through the first path and the second path.
  • the rules for user plane data and/or control plane data transmission are agreed upon in the protocol.
  • the method further includes:
  • the first terminal receives path configuration information of the network side device, where the path configuration information includes rules for transmitting user plane data and/or control plane data through the first path and the second path.
  • the network side device can send path configuration information through RRC messages or broadcast messages.
  • the rules for transmitting user plane data and/or control plane data can indicate which path each message or each bearer type takes, thereby completing a complete RRC connection establishment, recovery and/or reconstruction process.
  • the rules may include any of the following:
  • different signaling can be transmitted through different paths. For example, any signaling of SRB0 is transmitted through the indirect path, and any signaling of SRB1 and SRB2 is transmitted through the direct path. path transmission;
  • Different parts of the signaling radio bearer SRB1 can be transmitted simultaneously on the first path and the second path.
  • the first part of SRB1 is transmitted on the first path
  • the second part of SRB1 is transmitted on the second path.
  • SRB1 After being copied, SRB1 can be transmitted simultaneously on the first path and the second path, so that the reliability of data transmission can be improved through multi-path transmission, and the rate and throughput of data transmission can be improved;
  • Different parts of the data radio bearer DRB can be transmitted simultaneously on the first path and the second path.
  • the first part of the DRB is transmitted on the first path
  • the second part of the DRB is transmitted on the second path.
  • Multipath transmission can improve the reliability of data transmission, and can increase the rate and throughput of data transmission;
  • the DRB After being copied, the DRB can be transmitted simultaneously on the first path and the second path, so that the reliability of data transmission can be improved through multi-path transmission, and the rate and throughput of data transmission can be improved.
  • the rules further include:
  • the UE In the scenario where the first terminal and the second terminal are in the same base station (intra-gNB scenario), transmission of SRB3 and split SRB3 are not allowed, that is, from the perspective of the terminal side, the UE will not receive SRB3 and split SRB3 configured by the base station. ; From the network side, the base station does not support the configuration of SRB3 and split SRB3.
  • the protocol can stipulate the transmission path of all messages, such as sending the RRCSetupRequest message and the RRCSetupComplete message on the indirect path (the transmission power is small and the path is short), and the RRCSetup message is received on the direct path.
  • the network side device and the protocol agreement can jointly indicate the transmission path of all messages.
  • the protocol agrees on the transmission path of SRB0, sends the RRCSetupRequest message and receives the RRCSetup message on the indirect path, and then determines it through the instructions carried in the RRCSetup message.
  • SRB1 takes direct path or indirect path.
  • the transmission rules of SRB2 and/or DRB can follow the transmission rules of SRB1 by default, or the transmission rules of SRB2 and/or DRB can be further flexibly indicated through the RRC Reconfiguration message.
  • Step a4 The first terminal sends a multipath configuration complete message (aggregation complete) to the network side device.
  • an existing message can be used to carry the multipath configuration completion message, or a new multipath configuration completion message can be defined.
  • Existing messages include RRC reconfiguration complete messages.
  • the first terminal if the second path establishment is unsuccessful, the first terminal sends a multipath addition failure message to the network side device.
  • the first terminal has established an RRC connection and a related user plane (UP) path with the network side device through a non-direct path, and the first terminal can use the existing non-direct path (i.e., the first path) communicates with the network-side device to establish a direct path.
  • UP user plane
  • the reference signal received power (RSRP) of the first UE to the serving cell is lower than a certain threshold
  • the second UE has better link quality guarantee to the network side, for example, the second UE RSRP is higher than a certain threshold, optional, or A maximum RSRP threshold can be configured at the same time.
  • the second UE RSRP cannot exceed the maximum RSRP threshold to avoid excessive interference when the second UE is very close to the base station when relaying data), and through the relay UE or secondary UE to the serving cell.
  • Step b1 The first terminal determines whether the preset path addition conditions are met.
  • the path addition conditions specifically include at least one of the following:
  • the size of the data cache of the first terminal is greater than or equal to the first threshold
  • the service reliability (reliability) requirement of the first terminal is greater than or equal to the second threshold
  • the upper layer of the first terminal instructs the first terminal to transmit the service through the second path or through the first path and the second path, where the upper layers are the first terminal internal RRC
  • RRC Radio Resource Control
  • the at least one candidate cell includes a cell where the first terminal is on the direct path.
  • paging message that is, send a first paging indication to the first terminal to indicate the path establishment method of the UE in the first paging indication, carrying at least the following information one:
  • the path established is instructed to be a direct path or an indirect path;
  • instructing the first terminal to establish a multipath it is instructed to trigger the indirect path addition process through the existing direct connection data or to trigger the direct connection path addition process through the existing indirect connection data or to establish the direct connection path at the same time. and indirect paths.
  • the first paging indication is 1-bit encoding, it can be distinguished: single path (either direct or indirect path), multi-path (both direct and indirect path); if the first paging indication is 2-bit encoding, it can be distinguished: single path (direct path only), single path (indirect path only), multi-path (both direct and indirect path).
  • the arrival of downlink data may be caused by the base station paging the terminal.
  • a bearer is established between the base station and the terminal through an RRC message, and data is sent on the established bearer.
  • Step b2 When the first terminal determines that the preset path addition conditions are met, the first terminal sends a multipath addition request message (aggregation request) to the network side device through the existing first path, requesting to add the second path;
  • a multipath addition request message aggregation request
  • the existing message can be used to carry the multi-path addition request message, or a new multi-path addition request message can be defined.
  • the above-mentioned existing messages include at least one of the following: terminal assistance information (UE Assistance Information, UAI), secondary link terminal information (Sidelink UE Information, SUI), measurement report (Measurement report), radio resource control establishment completion (RRC Setup Complete), Radio Resource Control Recovery Complete (RRC Resume Complete) message, Radio Resource Control Reconstruction Complete (RRC Resume Complete) message.
  • the multipath addition request message may also include first information, and the first information includes at least one of the following:
  • the cell identification information of the candidate cell is the cell identification information of the candidate cell
  • the signal quality of the candidate cell of the first terminal is the signal quality of the candidate cell of the first terminal.
  • the network side device can be helped to select a cell from the candidate cells to establish a direct connection path between the first terminal and the cell, and ensure that the direct connection path has good communication quality.
  • Step b3 The first terminal receives the multipath addition configuration message (aggregation response) sent by the network side device;
  • existing messages can be used to carry the multipath addition configuration message, or a new multipath addition configuration message can be defined.
  • Existing messages include RRC synchronous reconfiguration (reconfiguration with sync) messages.
  • the multipath addition configuration message includes at least one of the following:
  • the first indication information is used to instruct a path switching operation or a path adding operation.
  • the first indication information may use 1 bit, or a new information element may be defined to carry the first indication information.
  • the path switching operation may be indicated when the first indication information is 0, and the path switching operation may be indicated when the first indication information is 1; or the path switching operation may be indicated when the first indication information is 1, and the path switching operation may be indicated when the first indication information is 1.
  • the indication information is 0, it indicates adding a path;
  • the network side device can configure rules for user plane data transmission and/or control plane data transmission, or through the first
  • the rules for transmitting user plane data and/or control plane data between the path and the second path are agreed upon by the protocol.
  • the method further includes:
  • the first terminal receives path configuration information of the network side device, where the path configuration information includes rules for transmitting user plane data and/or control plane data through the first path and the second path.
  • the network side device can send path configuration information through RRC messages or broadcast messages.
  • the rules for transmitting user plane data and/or control plane data can indicate which path each message or each bearer type takes, thereby completing a complete RRC connection establishment, recovery and/or reconstruction process.
  • the rules may include any of the following:
  • different signaling can be transmitted through different paths. For example, any signaling of SRB0 is transmitted through the indirect path, and any signaling of SRB1 and SRB2 is transmitted through the direct path. path transmission;
  • Different parts of the signaling radio bearer SRB1 can be transmitted simultaneously on the first path and the second path.
  • the first part of SRB1 is transmitted on the first path
  • the second part of SRB1 is transmitted on the second path.
  • SRB1 After being copied, SRB1 can be transmitted simultaneously on the first path and the second path, so that the reliability of data transmission can be improved through multi-path transmission, and the rate and throughput of data transmission can be improved;
  • Different parts of the data radio bearer DRB can be transmitted simultaneously on the first path and the second path.
  • the first part of the DRB is transmitted on the first path
  • the second part of the DRB is transmitted on the second path.
  • Multipath transmission can improve the reliability of data transmission, and can increase the rate and throughput of data transmission;
  • the DRB After being copied, the DRB can be transmitted simultaneously on the first path and the second path, so that the reliability of data transmission can be improved through multi-path transmission, and the rate and throughput of data transmission can be improved.
  • the rules further include:
  • the first terminal and the second terminal are in the same base station scenario (intra-gNB scenario) and are not allowed to transmit SRB3 and split SRB3. That is, from the perspective of the terminal side, the UE will not receive SRB3 and split SRB3 configured by the base station; From the network side, the base station does not support the configuration of SRB3 and split SRB3.
  • the protocol can stipulate the transmission path of all messages, such as sending the RRCSetupRequest message and the RRCSetupComplete message on the indirect path (low transmission power and short path), and receiving the RRCSetup message on the direct path.
  • the network side device and the protocol agreement can jointly indicate the transmission path of all messages.
  • the protocol agrees on the transmission path of SRB0, sends the RRCSetupRequest message and receives the RRCSetup message on the indirect path, and then determines it through the instructions carried in the RRCSetup message.
  • SRB1 takes direct path or indirect path.
  • the transmission rules of SRB2 and/or DRB can follow the transmission rules of SRB1 by default, or the transmission rules of SRB2 and/or DRB can be further flexibly indicated through the RRC Reconfiguration message.
  • Step b4 The first terminal sends a multipath configuration complete message (aggregation complete) to the network side device.
  • an existing message can be used to carry the multipath configuration completion message, or a new multipath configuration completion message can be defined.
  • Existing messages include RRC reconfiguration complete messages.
  • the first terminal if the second path establishment is unsuccessful, the first terminal sends a multipath addition failure message to the network side device.
  • the embodiment of the present application also provides a data transmission method, as shown in Figure 6, including:
  • Step 201 The network side device transmits user plane data and/or control plane data with the first terminal through multiple paths;
  • the plurality of paths include at least a first path and a second path, the first path is a direct path for direct communication between the first terminal and the network side device, and the second path is the third path.
  • the first path is an indirect path through which the first terminal communicates with the network-side device through the second terminal
  • the second path is a path through which the first terminal directly communicates with the network-side device. Direct path.
  • a multi-path connection can be established between the first terminal and the network-side device, and different signaling and service data can be transmitted between the first terminal and the network-side device through multiple paths, which can improve the efficiency of communication transmission.
  • Throughput and when the link quality of one path is poor, other paths with better link quality can be used to ensure transmission reliability.
  • the method before the network side device transmits user plane data and/or control plane data with the first terminal through multiple paths, the method includes:
  • the network side device communicates with the first terminal through the first path
  • the network side device receives a multipath addition request message sent by the first terminal through the existing first path, requesting to add the second path, and the multipath addition request message is a path that the first terminal determines meets the requirements. Send after adding conditions.
  • the path adding conditions may be agreed upon by the protocol or configured by the network side device or preconfigured by the network side device.
  • the method before the network side device transmits user plane data and/or control plane data with the first terminal through multiple paths, the method further includes:
  • the network side device sends a second indication through a system broadcast message and/or a radio resource control RRC dedicated message, where the second indication is used to indicate that the network side device supports the multipath function.
  • the system broadcast message can be SIB1, SIB12 or a new SIB
  • the RRC dedicated message can be RRC connection establishment (RRC setup), RRC connection recovery (RRC resume), RRC reconfiguration (RRC reconfiguration) or a new RRC dedicated message. information.
  • the first terminal has established an RRC connection and a related user plane (UP) path with the network side device through a direct connection path.
  • the first terminal can use the existing direct connection path to establish an RRC connection with the network side device. Indirect path.
  • UP user plane
  • the reference signal received power (RSRP) of the first UE to the serving cell is not lower than a certain threshold, at this time, if the first UE If there is a need for data transmission, you can directly establish an RRC connection with the serving cell and establish a DRB path. That is, a direct CP+UP path is established. You can directly connect The path (ie, the first path) communicates with the network side device and transmits control plane data and user plane data.
  • RSRP reference signal received power
  • Step a1 The first terminal determines whether the preset path addition conditions are met.
  • the path addition conditions specifically include at least one of the following:
  • the size of the data buffer of the first terminal is greater than or equal to the first threshold
  • the service reliability (reliability) requirement of the first terminal is greater than or equal to the second threshold
  • the upper layer of the first terminal instructs the first terminal to transmit the service through the second path or through the first path and the second path, where the upper layers are the first terminal internal RRC
  • RRC Radio Resource Control
  • the at least one candidate terminal includes the second terminal.
  • the link quality of at least one candidate terminal satisfies the preset communication conditions including at least one of the following:
  • the signal quality between the candidate terminal and the first terminal meets the preset communication conditions
  • the signal quality of the serving cell of the candidate terminal meets the preset communication conditions.
  • paging message that is, send a first paging indication to the first terminal to indicate the path establishment method of the UE in the first paging indication, carrying at least the following information one:
  • the path established is instructed to be a direct path or an indirect path;
  • instructing the first terminal to establish a multipath it is instructed to trigger the indirect path addition process through the existing direct connection data or to trigger the direct connection path addition process through the existing indirect connection data or to establish the direct connection path at the same time. and indirect paths.
  • the first paging indication is 1-bit encoding, it can be distinguished: single path (either direct or indirect path), multi-path (both direct and indirect path); if the first paging indication is 2-bit encoding, it can be distinguished: single path (direct path only), single path (indirect path only), multi-path (both direct and indirect path).
  • the arrival of downlink data may be caused by the base station paging the terminal.
  • a bearer is established between the base station and the terminal through an RRC message, and data is sent on the established bearer.
  • Step a2 When the first terminal determines that the preset path addition conditions are met, the first terminal sends a multipath addition request message (aggregation request) to the network side device through the existing first path, requesting to add the second path;
  • a multipath addition request message aggregation request
  • the existing message can be used to carry the multi-path addition request message, or a new multi-path addition request message can be defined.
  • the above-mentioned existing messages include at least one of the following: terminal assistance information (UE Assistance Information, UAI), secondary link terminal information (Sidelink UE Information, SUI), measurement report (Measurement report), radio resource control establishment completion (RRC Setup Complete), Radio Resource Control Recovery Complete (RRC Resume Complete) message, Radio Resource Control Reconstruction Complete (RRC Resume Complete) message.
  • the multipath addition request message may also include first information, and the first information includes at least one of the following:
  • the signal quality between the first terminal and the candidate terminal is the signal quality between the first terminal and the candidate terminal
  • the identification information of the candidate terminal is the identification information of the candidate terminal.
  • the serving cell identification information of the candidate terminal is the serving cell identification information of the candidate terminal.
  • the signal quality of the serving cell of the candidate terminal is the signal quality of the serving cell of the candidate terminal.
  • the network side device can be helped to select the second terminal from the candidate terminals to establish a link between the first terminal and the second terminal and ensure that the link has good communication quality.
  • Step a3 The first terminal receives the multipath addition configuration message (aggregation response) sent by the network side device;
  • existing messages can be used to carry the multipath addition configuration message, or a new multipath addition configuration message can be defined.
  • Existing messages include RRC synchronous reconfiguration (reconfiguration with sync) messages.
  • the multipath addition configuration message includes at least one of the following:
  • the identification information of the second terminal is the identification information of the second terminal.
  • the serving cell identification information of the second terminal is the serving cell identification information of the second terminal.
  • the first indication information is used to instruct a path switching operation or a path adding operation.
  • the first indication information may use 1 bit, or a new information element may be defined to carry the first indication information.
  • the path switching operation may be indicated when the first indication information is 0, and the path switching operation may be indicated when the first indication information is 1; or the path switching operation may be indicated when the first indication information is 1, and the path switching operation may be indicated when the first indication information is 1.
  • the indication information is 0, it indicates adding a path;
  • the network side device can configure the rules for user plane data transmission and/or control plane data transmission, or perform the transmission through the first path and the second path.
  • the rules for user plane data and/or control plane data transmission are agreed upon in the protocol.
  • the method further includes:
  • the first terminal receives path configuration information of the network side device, where the path configuration information includes rules for transmitting user plane data and/or control plane data through the first path and the second path.
  • the network side device can send path configuration information through RRC messages or broadcast messages.
  • the rules for transmitting user plane data and/or control plane data can indicate which path each message or each bearer type takes, thereby completing a complete RRC connection establishment, recovery and/or reconstruction process.
  • the rules may include any of the following:
  • different signaling can be transmitted through different paths. For example, any signaling of SRB0 is transmitted through the indirect path, and any signaling of SRB1 and SRB2 is transmitted through the direct path. path transmission;
  • Different parts of the signaling radio bearer SRB1 can be transmitted simultaneously on the first path and the second path.
  • the first part of SRB1 is transmitted on the first path
  • the second part of SRB1 is transmitted on the second path.
  • SRB1 After being copied, SRB1 can be transmitted simultaneously on the first path and the second path, so that the reliability of data transmission can be improved through multi-path transmission, and the rate and throughput of data transmission can be improved;
  • Different parts of the data radio bearer DRB can be transmitted simultaneously on the first path and the second path.
  • the first part of the DRB is transmitted on the first path
  • the second part of the DRB is transmitted on the second path.
  • Multipath transmission can improve the reliability of data transmission, and can increase the rate and throughput of data transmission;
  • the DRB After being copied, the DRB can be transmitted simultaneously on the first path and the second path, so that the reliability of data transmission can be improved through multi-path transmission, and the rate and throughput of data transmission can be improved.
  • the rules further include:
  • the first terminal and the second terminal are in the same base station scenario (intra-gNB scenario) and are not allowed to transmit SRB3 and split SRB3. That is, from the perspective of the terminal side, the UE will not receive SRB3 and split SRB3 configured by the base station; From the network side, the base station does not support the configuration of SRB3 and split SRB3.
  • the protocol can stipulate the transmission path of all messages, such as sending the RRCSetupRequest message and the RRCSetupComplete message on the indirect path (low transmission power and short path), and receiving the RRCSetup message on the direct path.
  • the network side device and the protocol agreement can jointly indicate the transmission path of all messages.
  • the protocol agrees on the transmission path of SRB0, sends the RRCSetupRequest message and receives the RRCSetup message on the indirect path, and then determines it through the instructions carried in the RRCSetup message.
  • SRB1 takes direct path or indirect path.
  • the transmission rules of SRB2 and/or DRB can follow the transmission rules of SRB1 by default, or the transmission rules of SRB2 and/or DRB can be further flexibly indicated through the RRC Reconfiguration message.
  • Step a4 The first terminal sends a multipath configuration completion message to the network side device. (aggregation complete).
  • an existing message can be used to carry the multipath configuration completion message, or a new multipath configuration completion message can be defined.
  • Existing messages include RRC reconfiguration complete messages.
  • the first terminal has established an RRC connection and a related user plane (UP) path with the network side device through a non-direct path, and the first terminal can use the existing non-direct path (i.e., the first path) communicates with the network-side device to establish a direct path.
  • UP user plane
  • the reference signal received power (RSRP) of the first UE to the serving cell is lower than a certain threshold, at this time, if the first UE has For data transmission needs, you can find a suitable relay UE or secondary UE (the second UE has better link quality guarantee to the network side, for example, the second UE RSRP is higher than a certain threshold, optional, or A maximum RSRP threshold can be configured at the same time.
  • RSRP reference signal received power
  • the second UE RSRP cannot exceed the maximum RSRP threshold to avoid excessive interference when the second UE is very close to the base station when relaying data), and through the relay UE or secondary UE to the serving cell Establish the RRC connection and establish the DRB path, that is, the indirect CP+UP path is established, and control plane data and user plane data can be transmitted through the indirect path.
  • the first terminal if the second path establishment is unsuccessful, the first terminal sends a multipath addition failure message to the network side device.
  • Step b1 The first terminal determines whether the preset path addition conditions are met.
  • the path addition conditions specifically include at least one of the following:
  • the size of the data buffer of the first terminal is greater than or equal to the first threshold
  • the service reliability (reliability) requirement of the first terminal is greater than or equal to the second threshold
  • the upper layer of the first terminal instructs the first terminal to transmit the service through the second path or through the first path and the second path, where the upper layers are the first terminal internal RRC
  • RRC Radio Resource Control
  • Receive a second indication from the network side device the second indication is used to indicate to the network side
  • the device supports multi-path function
  • the at least one candidate cell includes a cell where the first terminal is on the direct path.
  • paging message that is, send a first paging indication to the first terminal to indicate the path establishment method of the UE in the first paging indication, carrying at least the following information one:
  • the path established is instructed to be a direct path or an indirect path;
  • instructing the first terminal to establish a multipath it is instructed to trigger the indirect path addition process through the existing direct connection data or to trigger the direct connection path addition process through the existing indirect connection data or to establish the direct connection path at the same time. and indirect paths.
  • the first paging indication is 1-bit encoding, it can be distinguished: single path (either direct or indirect path), multi-path (both direct and indirect path); if the first paging indication is 2-bit encoding, it can be distinguished: single path (direct path only), single path (indirect path only), multi-path (both direct and indirect path).
  • the arrival of downlink data may be caused by the base station paging the terminal.
  • a bearer is established between the base station and the terminal through an RRC message, and data is sent on the established bearer.
  • Step b2 When the first terminal determines that the preset path addition conditions are met, the first terminal sends a multipath addition request message (aggregation request) to the network side device through the existing first path, requesting to add the second path;
  • a multipath addition request message aggregation request
  • the existing message can be used to carry the multi-path addition request message, or a new multi-path addition request message can be defined.
  • the above-mentioned existing messages include at least one of the following: terminal assistance information (UE Assistance Information, UAI), secondary link terminal information (Sidelink UE Information, SUI), measurement report (Measurement report), radio resource control establishment completion (RRC Setup Complete), Radio Resource Control Recovery Complete (RRC Resume Complete) message, Radio Resource Control Reconstruction Complete (RRC Resume Complete) message.
  • the multipath addition request message may also include first information, and the first information Information includes at least one of the following:
  • the cell identification information of the candidate cell is the cell identification information of the candidate cell
  • the signal quality of the candidate cell of the first terminal is the signal quality of the candidate cell of the first terminal.
  • the network side device can be helped to select a cell from the candidate cells to establish a direct connection path between the first terminal and the cell, and ensure that the direct connection path has good communication quality.
  • Step b3 The first terminal receives the multipath addition configuration message (aggregation response) sent by the network side device;
  • existing messages can be used to carry the multipath addition configuration message, or a new multipath addition configuration message can be defined.
  • Existing messages include RRC synchronous reconfiguration (reconfiguration with sync) messages.
  • the multipath addition configuration message includes at least one of the following:
  • the first indication information is used to instruct a path switching operation or a path adding operation.
  • the first indication information may use 1 bit, or a new information element may be defined to carry the first indication information.
  • the path switching operation may be indicated when the first indication information is 0, and the path switching operation may be indicated when the first indication information is 1; or the path switching operation may be indicated when the first indication information is 1, and the path switching operation may be indicated when the first indication information is 1.
  • the indication information is 0, it indicates adding a path;
  • the network side device can configure the rules for user plane data transmission and/or control plane data transmission, or perform the transmission through the first path and the second path.
  • the rules for user plane data and/or control plane data transmission are agreed upon in the protocol.
  • the method further includes:
  • the first terminal receives path configuration information of the network side device, where the path configuration information includes rules for transmitting user plane data and/or control plane data through the first path and the second path.
  • the network side device can send path configuration information through RRC messages or broadcast messages.
  • the rules for transmitting user plane data and/or control plane data can indicate which path each message or each bearer type takes, thereby completing a complete RRC connection establishment, recovery and/or reconstruction process.
  • the rules may include any of the following:
  • different signaling can be transmitted through different paths. For example, any signaling of SRB0 is transmitted through the indirect path, and any signaling of SRB1 and SRB2 is transmitted through the direct path. path transmission;
  • Different parts of the signaling radio bearer SRB1 can be transmitted simultaneously on the first path and the second path.
  • the first part of SRB1 is transmitted on the first path
  • the second part of SRB1 is transmitted on the second path.
  • SRB1 After being copied, SRB1 can be transmitted simultaneously on the first path and the second path, so that the reliability of data transmission can be improved through multi-path transmission, and the rate and throughput of data transmission can be improved;
  • Different parts of the data radio bearer DRB can be transmitted simultaneously on the first path and the second path.
  • the first part of the DRB is transmitted on the first path
  • the second part of the DRB is transmitted on the second path.
  • Multipath transmission can improve the reliability of data transmission, and can increase the rate and throughput of data transmission;
  • the DRB After being copied, the DRB can be transmitted simultaneously on the first path and the second path, so that the reliability of data transmission can be improved through multi-path transmission, and the rate and throughput of data transmission can be improved.
  • the rules further include:
  • the first terminal and the second terminal are in the same base station scenario (intra-gNB scenario) and are not allowed to transmit SRB3 and split SRB3. That is, from the perspective of the terminal side, the UE will not receive SRB3 and split SRB3 configured by the base station; From the network side, the base station does not support the configuration of SRB3 and split SRB3.
  • the protocol can stipulate the transmission path of all messages, such as sending the RRCSetupRequest message and the RRCSetupComplete message on the indirect path (low transmission power and short path), and receiving the RRCSetup message on the direct path.
  • the network side device and the protocol agreement can jointly indicate the transmission path of all messages.
  • the protocol agrees on the transmission path of SRB0, sends the RRCSetupRequest message and receives the RRCSetup message on the indirect path, and then determines it through the instructions carried in the RRCSetup message.
  • SRB1 takes direct path or indirect path.
  • the transmission rules of SRB2 and/or DRB can follow the transmission rules of SRB1 by default, or the transmission rules of SRB2 and/or DRB can be further flexibly indicated through the RRC Reconfiguration message.
  • Step b4 The first terminal sends a multipath configuration complete message (aggregation complete) to the network side device.
  • an existing message can be used to carry the multipath configuration completion message, or a new multipath configuration completion message can be defined.
  • Existing messages include RRC reconfiguration complete messages.
  • the first terminal if the second path establishment is unsuccessful, the first terminal sends a multipath addition failure message to the network side device.
  • the execution subject may be a data transmission device.
  • a data transmission device performing a data transmission method is used as an example to illustrate the data transmission device provided by the embodiment of the present application.
  • This embodiment of the present application provides a data transmission device, as shown in Figure 7, applied to the first terminal 300, including:
  • the first transmission module 310 is used to transmit user plane data and/or control plane data with network side devices through multiple paths;
  • the plurality of paths include at least a first path and a second path, the first path is a direct path for direct communication between the first terminal and the network side device, and the second path is the third path.
  • the first path is an indirect path through which the first terminal communicates with the network-side device through the second terminal
  • the second path is a path through which the first terminal directly communicates with the network-side device. Direct path.
  • a multi-path connection can be established between the first terminal and the network-side device, and different signaling and service data can be transmitted between the first terminal and the network-side device through multiple paths, which can improve the efficiency of communication transmission.
  • Throughput and when the link quality of one path is poor, other paths with better link quality can be used to ensure transmission reliability.
  • the first transmission module 310 is used to communicate with the network side device through the first path;
  • a multipath addition request message is sent to the network side device through the existing first path, requesting to add the second path.
  • the first path is a direct path through which the first terminal communicates directly with the network side device
  • the second path is a direct path through which the first terminal communicates with the network side device through the second terminal.
  • the path addition conditions include at least one of the following:
  • the size of the data cache of the first terminal is greater than or equal to the first threshold
  • the service reliability requirement of the first terminal is greater than or equal to the second threshold
  • the upper layer of the first terminal instructs the first terminal to transmit the service through the second path or through the first path and the second path;
  • the at least one candidate terminal includes the second terminal.
  • the link quality of at least one candidate terminal satisfies the preset communication conditions including at least one of the following:
  • the signal quality between the candidate terminal and the first terminal meets preset communication conditions
  • the signal quality of the serving cell of the candidate terminal meets the preset communication conditions.
  • the multipath addition request message further includes first information, and the first information includes at least one of the following:
  • the signal quality between the first terminal and the candidate terminal is the signal quality between the first terminal and the candidate terminal
  • the identification information of the candidate terminal is the identification information of the candidate terminal.
  • the serving cell identification information of the candidate terminal is the serving cell identification information of the candidate terminal.
  • the signal quality of the serving cell of the candidate terminal is the signal quality of the serving cell of the candidate terminal.
  • the first transmission module 310 is configured to receive a multipath addition configuration message returned by the network side device; and send a multipath addition completion message to the network side device;
  • the first terminal receives the multipath addition configuration message returned by the network side device;
  • the first terminal sends a multipath addition failure message to the network side device.
  • the first path is a direct path through which the first terminal communicates directly with the network side device
  • the second path is a direct path through which the first terminal communicates with the network side device through the second terminal.
  • the multipath addition configuration message includes at least one of the following:
  • the identification information of the second terminal is the identification information of the second terminal.
  • the serving cell identification information of the second terminal is the serving cell identification information of the second terminal.
  • the first instruction information is used to instruct a path switching operation or a path adding operation
  • the first path is an indirect path through which the first terminal communicates with the network side device through the second terminal
  • the second path is a path between the first terminal and the network side device.
  • the path adding conditions include at least one of the following:
  • the size of the data cache of the first terminal is greater than or equal to the first threshold
  • the service reliability requirement of the first terminal is greater than or equal to the second threshold
  • the upper layer of the first terminal instructs the first terminal to transmit the service through the second path or through the first path and the second path;
  • the at least one candidate cell includes a cell where the first terminal is on the direct path.
  • the multipath addition request message further includes first information, and the first information includes at least one of the following:
  • the cell identification information of the candidate cell is the cell identification information of the candidate cell
  • the signal quality of the candidate cell of the first terminal is the signal quality of the candidate cell of the first terminal.
  • the first path is an indirect path through which the first terminal communicates with the network side device through the second terminal
  • the second path is a path between the first terminal and the network side device.
  • the multipath addition configuration message includes at least one of the following:
  • the first instruction information is used to instruct a path switching operation or a path adding operation
  • the rules for transmitting user plane data and/or control plane data through the first path and the second path are agreed upon by the protocol.
  • the first transmission module 310 is configured to receive path configuration information of the network side device, where the path configuration information includes user plane data and/or control through the first path and the second path. rules for surface data transmission.
  • the rules include at least one of the following:
  • Different parts of the signaling radio bearer SRB1 can be transmitted simultaneously on the first path and the second path;
  • SRB1 can be transmitted simultaneously on the first path and the second path after copying
  • Different parts of the data radio bearer DRB can be transmitted simultaneously on the first path and the second path;
  • the DRB can be transmitted simultaneously on the first path and the second path after being copied.
  • the rules further include:
  • the first terminal and the second terminal are in the same base station scenario (intra-gNB scenario) and are not allowed to transmit SRB3 and split SRB3. That is, from the perspective of the terminal side, the UE will not receive SRB3 and split (split) configured by the base station. )SRB3; From the network side, the base station does not support the configuration of SRB3 and split SRB3.
  • the first transmission module 310 is configured to receive a first paging indication from the network side device.
  • the first paging indication is used to indicate the data transmission mode of the first terminal.
  • the first paging indication is used to indicate the data transmission mode of the first terminal.
  • Paging instructions include at least one of the following:
  • the path established is instructed to be a direct path or an indirect path;
  • instructing the first terminal to establish a multipath it is instructed to trigger the indirect path addition process through the existing direct connection data or to trigger the direct connection path addition process through the existing indirect connection data or to establish the direct connection path at the same time. and indirect paths.
  • the data transmission device in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or may be a component in the electronic device, such as an integrated circuit or chip.
  • the electronic device may be a terminal or other devices other than the terminal.
  • terminals may include but are not limited to the types of terminals 11 listed above, and other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., which are not specifically limited in the embodiment of this application.
  • NAS Network Attached Storage
  • the data transmission device provided by the embodiment of the present application can implement each process implemented by the method embodiment in Figure 5 and achieve the same technical effect. To avoid duplication, the details will not be described here.
  • This embodiment of the present application provides a data transmission device, as shown in Figure 8, applied to network side equipment 400, including:
  • the second transmission module 410 is used to transmit user plane data and/or control plane data with the first terminal through multiple paths;
  • the plurality of paths include at least a first path and a second path, the first path is a direct path for direct communication between the first terminal and the network side device, and the second path is the third path.
  • the first path is an indirect path through which the first terminal communicates with the network-side device through the second terminal
  • the second path is a path through which the first terminal directly communicates with the network-side device. Direct path.
  • a multi-path connection can be established between the first terminal and the network-side device, and different signaling and service data can be transmitted between the first terminal and the network-side device through multiple paths, which can improve the efficiency of communication transmission. throughput, and when one of the paths has poor link quality, it can Use other paths with better link quality to ensure transmission reliability.
  • the second transmission module 410 is configured to communicate with the first terminal through the first path; receive a multipath addition request message sent by the first terminal through the existing first path, and request to add the multipath addition request message.
  • the multi-path addition request message is sent after the first terminal determines that path addition conditions are met.
  • the first path is a direct path through which the first terminal communicates directly with the network side device
  • the second path is a direct path through which the first terminal communicates with the network side device through the second terminal.
  • the multi-path addition request message also includes first information, and the first information includes at least one of the following:
  • the signal quality between the first terminal and the candidate terminal is the signal quality between the first terminal and the candidate terminal
  • the identification information of the candidate terminal is the identification information of the candidate terminal.
  • the serving cell identification information of the candidate terminal is the serving cell identification information of the candidate terminal.
  • the signal quality of the serving cell of the candidate terminal is the signal quality of the serving cell of the candidate terminal
  • the candidate terminal includes the second terminal.
  • the second transmission module 410 is configured to send a multipath addition configuration message to the first terminal; receive a multipath addition completion message sent by the first terminal; or receive a multipath addition completion message sent by the first terminal. Path addition failure message.
  • the first path is a direct path through which the first terminal communicates directly with the network side device
  • the second path is a direct path through which the first terminal communicates with the network side device through the second terminal.
  • the multipath addition configuration message includes at least one of the following:
  • the identification information of the second terminal is the identification information of the second terminal.
  • the serving cell identification information of the second terminal is the serving cell identification information of the second terminal.
  • the first instruction information is used to instruct a path switching operation or a path adding operation
  • the first path is an indirect path through which the first terminal communicates with the network side device through the second terminal, and the second path is a path between the first terminal and the network side device.
  • the multipath addition request message also includes a first Information, the first information includes at least one of the following:
  • the candidate cell includes a cell where the first terminal is on the direct path.
  • the first path is an indirect path through which the first terminal communicates with the network side device through the second terminal
  • the second path is a path between the first terminal and the network side device.
  • the multipath addition configuration message includes at least one of the following:
  • the first instruction information is used to instruct a path switching operation or a path adding operation
  • the rules for transmitting user plane data and/or control plane data through the first path and the second path are agreed upon by the protocol.
  • the second transmission module 410 is configured to send path configuration information to the first terminal, where the path configuration information includes user plane data and/or control plane through the first path and the second path. Data transfer rules.
  • the rules include at least one of the following:
  • Different parts of the signaling radio bearer SRB1 can be transmitted simultaneously on the first path and the second path;
  • SRB1 can be transmitted simultaneously on the first path and the second path after copying
  • Different parts of the data radio bearer DRB can be transmitted simultaneously on the first path and the second path;
  • the DRB can be transmitted simultaneously on the first path and the second path after being copied.
  • the rules further include:
  • the first terminal and the second terminal are in the same base station scenario (intra-gNB scenario) and are not allowed to transmit SRB3 and separate SRB3. That is, from the perspective of the terminal side, the UE will not receive the configuration configured by the base station. SRB3 and split SRB3; from the network side, the base station does not support the configuration of SRB3 and split SRB3.
  • the second transmission module 410 is configured to send a first paging indication to the first terminal, where the first paging indication is used to indicate the data transmission mode of the first terminal.
  • Call instructions include at least one of the following:
  • the path established is instructed to be a direct path or an indirect path;
  • instructing the first terminal to establish a multipath it is instructed to trigger the indirect path addition process through the existing direct connection data or to trigger the direct connection path addition process through the existing indirect connection data or to establish the direct connection path at the same time. and indirect paths.
  • the data transmission device provided by the embodiment of the present application can implement each process implemented by the method embodiment in Figure 6 and achieve the same technical effect. To avoid duplication, the details will not be described here.
  • this embodiment of the present application also provides a communication device 600, which includes a processor 601 and a memory 602.
  • the memory 602 stores programs or instructions that can be run on the processor 601, for example.
  • the communication device 600 is a network-side device, when the program or instruction is executed by the processor 601, each step of the above data transmission method embodiment is implemented, and the same technical effect can be achieved.
  • the communication device 600 is a terminal, when the program or instruction is executed by the processor 601, each step of the above-mentioned data transmission method embodiment is implemented, and the same technical effect can be achieved. To avoid duplication, the details will not be described here.
  • the embodiment of the present application also provides a network side device.
  • the network side device includes a processor and a memory.
  • the memory stores programs or instructions that can be run on the processor.
  • the program or instructions are used by the processor. When executed, the steps of implementing the data transfer method as described above are executed.
  • An embodiment of the present application also provides a network side device, including a processor and a communication interface, wherein the communication interface is used to transmit user plane data and/or control plane data with the first terminal through multiple paths;
  • the plurality of paths include at least a first path and a second path, the first path is a direct path for direct communication between the first terminal and the network side device, and the second path is the third path.
  • the first path is for the first terminal to communicate with the network side device through the second terminal.
  • An indirect path, the second path is a direct path for direct communication between the first terminal and the network side device.
  • An embodiment of the present application also provides a terminal, which includes a processor and a memory.
  • the memory stores programs or instructions that can be run on the processor. When the program or instructions are executed by the processor, the above is implemented. The steps of the data transmission method.
  • An embodiment of the present application also provides a terminal, including a processor and a communication interface, wherein the communication interface is used to transmit user plane data and/or control plane data with a network side device through multiple paths;
  • the plurality of paths include at least a first path and a second path, the first path is a direct path for direct communication between the first terminal and the network side device, and the second path is the third path.
  • the first path is an indirect path through which the first terminal communicates with the network-side device through the second terminal
  • the second path is a path through which the first terminal directly communicates with the network-side device. Direct path.
  • An embodiment of the present application also provides a terminal, including a processor and a communication interface.
  • the terminal embodiment corresponds to the above-mentioned terminal-side method embodiment.
  • Each implementation process and implementation manner of the above-mentioned method embodiment can be applied to this terminal embodiment. , and can achieve the same technical effect.
  • FIG. 10 is a schematic diagram of the hardware structure of a terminal that implements an embodiment of the present application.
  • the terminal 700 includes but is not limited to: a radio frequency unit 701, a network module 702, an audio output unit 703, an input unit 704, a sensor 705, a display unit 706, a user input unit 707, an interface unit 708, a memory 709, a processor 710, etc. At least some parts.
  • the terminal 700 may also include a power supply (such as a battery) that supplies power to various components.
  • the power supply may be logically connected to the processor 710 through a power management system, thereby managing charging, discharging, and power consumption through the power management system. Management and other functions.
  • the terminal structure shown in FIG. 10 does not constitute a limitation on the terminal.
  • the terminal may include more or fewer components than shown in the figure, or some components may be combined or arranged differently, which will not be described again here.
  • the input unit 704 may include a graphics processing unit (GPU) 7041 and a microphone 7042.
  • the graphics processor 7041 is responsible for the image capture device (GPU) in the video capture mode or the image capture mode. Process the image data of still pictures or videos obtained by cameras (such as cameras).
  • the display unit 706 may include a display panel 7061, which may The display panel 7061 is configured in the form of a liquid crystal display, an organic light emitting diode, or the like.
  • the user input unit 707 includes a touch panel 7071 and at least one of other input devices 7072 . Touch panel 7071, also called touch screen.
  • the touch panel 7071 may include two parts: a touch detection device and a touch controller.
  • Other input devices 7072 may include but are not limited to physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, and joysticks, which will not be described again here.
  • the radio frequency unit 701 after receiving downlink data from the network side device, can transmit it to the processor 710 for processing; in addition, the radio frequency unit 701 can send uplink data to the network side device.
  • the radio frequency unit 701 includes, but is not limited to, an antenna, amplifier, transceiver, coupler, low noise amplifier, duplexer, etc.
  • Memory 709 may be used to store software programs or instructions as well as various data.
  • the memory 709 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, an application program or instructions required for at least one function (such as a sound playback function, Image playback function, etc.) etc.
  • memory 709 may include volatile memory or non-volatile memory, or memory 709 may include both volatile and non-volatile memory.
  • 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), electrically removable memory. Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • Volatile memory can be random access memory (Random Access Memory, RAM), 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, DDRSDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (Synch link DRAM) , SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DRRAM).
  • RAM Random Access Memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • SDRAM double data rate synchronous dynamic random access memory
  • Double Data Rate SDRAM Double Data Rate SDRAM
  • DDRSDRAM double data rate synchronous dynamic random access memory
  • Enhanced SDRAM, ESDRAM enhanced synchronous dynamic random access memory
  • Synch link DRAM synchronous link dynamic random access memory
  • SLDRAM direct memory bus
  • the processor 710 may include one or more processing units; optionally, the processor 710 integrates an application processor and a modem processor, where the application processor mainly handles operations related to the operating system, user interface, application programs, etc., Modem processors mainly process wireless communication signals, such as baseband processors. It can be understood that the above-mentioned modem processor may not be integrated into the processor 710.
  • the processor 710 is configured to transmit user plane data and/or control plane data with the network side device through multiple paths;
  • the plurality of paths include at least a first path and a second path, the first path is a direct path for direct communication between the first terminal and the network side device, and the second path is the third path.
  • the first path is an indirect path through which the first terminal communicates with the network-side device through the second terminal
  • the second path is a path through which the first terminal directly communicates with the network-side device. Direct path.
  • the processor 710 is configured to communicate with the network side device through the first path;
  • a multipath addition request message is sent to the network side device through the existing first path, requesting to add the second path.
  • the first path is a direct path through which the first terminal communicates directly with the network side device
  • the second path is a direct path through which the first terminal communicates with the network side device through the second terminal.
  • the path addition conditions include at least one of the following:
  • the size of the data cache of the first terminal is greater than or equal to the first threshold
  • the service reliability requirement of the first terminal is greater than or equal to the second threshold
  • the upper layer of the first terminal instructs the first terminal to transmit the service through the second path or through the first path and the second path;
  • the at least one candidate terminal includes the second terminal.
  • the link quality of at least one candidate terminal satisfies the preset communication conditions including at least one of the following:
  • the signal quality between the candidate terminal and the first terminal meets preset communication conditions
  • the signal quality of the serving cell of the candidate terminal meets the preset communication conditions.
  • the multipath addition request message further includes first information, and the first information Information includes at least one of the following:
  • the signal quality between the first terminal and the candidate terminal is the signal quality between the first terminal and the candidate terminal
  • the identification information of the candidate terminal is the identification information of the candidate terminal.
  • the serving cell identification information of the candidate terminal is the serving cell identification information of the candidate terminal.
  • the signal quality of the serving cell of the candidate terminal is the signal quality of the serving cell of the candidate terminal.
  • the processor 710 is configured to receive a multipath addition configuration message returned by the network side device; send a multipath addition completion message to the network side device; or send a multipath addition completion message to the network side device. Failure message.
  • the first path is a direct path through which the first terminal communicates directly with the network side device
  • the second path is a direct path through which the first terminal communicates with the network side device through the second terminal.
  • the multipath addition configuration message includes at least one of the following:
  • the identification information of the second terminal is the identification information of the second terminal.
  • the serving cell identification information of the second terminal is the serving cell identification information of the second terminal.
  • the first instruction information is used to instruct a path switching operation or a path adding operation
  • the first path is an indirect path through which the first terminal communicates with the network side device through the second terminal
  • the second path is a path between the first terminal and the network side device.
  • the path adding conditions include at least one of the following:
  • the size of the data cache of the first terminal is greater than or equal to the first threshold
  • the service reliability requirement of the first terminal is greater than or equal to the second threshold
  • the upper layer of the first terminal instructs the first terminal to transmit the service through the second path or through the first path and the second path;
  • the at least one candidate cell includes a cell where the first terminal is on the direct path.
  • the multipath addition request message further includes first information, and the first information includes at least one of the following:
  • the cell identification information of the candidate cell is the cell identification information of the candidate cell
  • the signal quality of the candidate cell of the first terminal is the signal quality of the candidate cell of the first terminal.
  • the first path is an indirect path through which the first terminal communicates with the network side device through the second terminal
  • the second path is a path between the first terminal and the network side device.
  • the multipath addition configuration message includes at least one of the following:
  • the first instruction information is used to instruct a path switching operation or a path adding operation
  • the rules for transmitting user plane data and/or control plane data through the first path and the second path are agreed upon by the protocol.
  • the processor 710 is configured to receive path configuration information of the network side device, where the path configuration information includes user plane data and/or control plane data through the first path and the second path. Transmission rules.
  • the rules include at least one of the following:
  • Different parts of the signaling radio bearer SRB1 can be transmitted simultaneously on the first path and the second path;
  • SRB1 can be transmitted simultaneously on the first path and the second path after copying
  • Different parts of the data radio bearer DRB can be transmitted simultaneously on the first path and the second path;
  • the DRB can be transmitted simultaneously on the first path and the second path after being copied.
  • the rules further include:
  • the first terminal and the second terminal are in the same base station scenario (intra-gNB scenario) and are not allowed to transmit SRB3 and separate SRB3. That is, from the perspective of the terminal side, the UE will not receive the configuration configured by the base station. SRB3 and split SRB3; from the network side, the base station does not support the configuration of SRB3 and split SRB3.
  • the processor 710 is configured to receive a first paging indication from the network side device.
  • the first paging indication is used to indicate the data transmission mode of the first terminal.
  • the first paging indication Instructions include at least one of the following:
  • the path established is instructed to be a direct path or an indirect path;
  • instructing the first terminal to establish a multipath it is instructed to trigger the indirect path addition process through the existing direct connection data or to trigger the direct connection path addition process through the existing indirect connection data or to establish the direct connection path at the same time. and indirect paths.
  • An embodiment of the present application also provides a network side device, including a processor and a communication interface.
  • This network-side device embodiment corresponds to the above-mentioned network-side device method embodiment.
  • Each implementation process and implementation manner of the above-mentioned method embodiment can be applied to this network-side device embodiment, and can achieve the same technical effect.
  • the embodiment of the present application also provides a network side device.
  • the network side device 800 includes: an antenna 81 , a radio frequency device 82 , a baseband device 83 , a processor 84 and a memory 85 .
  • the antenna 81 is connected to the radio frequency device 82 .
  • the radio frequency device 82 receives information through the antenna 81 and sends the received information to the baseband device 83 for processing.
  • the baseband device 83 processes the information to be sent and sends it to the radio frequency device 82.
  • the radio frequency device 82 processes the received information and then sends it out through the antenna 81.
  • the method performed by the network side device in the above embodiment can be implemented in the baseband device 83, which includes a baseband processor.
  • the baseband device 83 may include, for example, at least one baseband board on which multiple chips are disposed, as shown in FIG. Program to perform the network device operations shown in the above method embodiments.
  • the network side device may also include a network interface 86, which is, for example, a common public radio interface (CPRI).
  • a network interface 86 which is, for example, a common public radio interface (CPRI).
  • CPRI common public radio interface
  • the network side device 800 in this embodiment of the present invention also includes: stored in the memory 85 and The instructions or programs that can be run on the processor 84, the processor 84 calls the instructions or programs in the memory 85 to execute the data transmission method as described above, and achieve the same technical effect. To avoid repetition, they will not be described again here.
  • Embodiments of the present application also provide a readable storage medium.
  • Programs or instructions are stored on the readable storage medium.
  • the program or instructions are executed by a processor, each process of the above data transmission method embodiment is implemented, and the same can be achieved. The technical effects will not be repeated here to avoid repetition.
  • the processor is the processor in the terminal described in the above embodiment.
  • the readable storage medium includes computer readable storage media, such as computer read-only memory ROM, random access memory RAM, magnetic disk or optical disk, etc.
  • An embodiment of the present application further provides a chip.
  • the chip includes a processor and a communication interface.
  • the communication interface is coupled to the processor.
  • the processor is used to run programs or instructions to implement the above data transmission method embodiment. Each process can achieve the same technical effect. To avoid duplication, it will not be described again here.
  • chips mentioned in the embodiments of this application may also be called system-on-chip, system-on-a-chip, system-on-chip or system-on-chip, etc.
  • Embodiments of the present application further provide a computer program/program product.
  • the computer program/program product is stored in a storage medium.
  • the computer program/program product is executed by at least one processor to implement the above data transmission method embodiment.
  • Each process can achieve the same technical effect. To avoid repetition, we will not go into details here.
  • Embodiments of the present application also provide a data transmission system, including: a network side device and a terminal.
  • the network side device can be used to perform the steps of the data transmission method as described above.
  • the terminal can be used to perform the data transmission method as described above. Steps of the transfer method.
  • the disclosed devices and methods can be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined or can be integrated into another system, or some features can be ignored, or not implemented.
  • the coupling or direct coupling or communication connection between each other shown or discussed may be through some interfaces, and the indirect coupling or communication connection of the 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 they may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in various embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the present disclosure is essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product.
  • the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of the present disclosure.
  • the aforementioned storage media include: U disk, mobile hard disk, ROM, RAM, magnetic disk or optical disk and other media that can store program codes.
  • the program can be stored in a computer-readable storage medium.
  • the program can be stored in a computer-readable storage medium.
  • the process may include the processes of the embodiments of each of the above methods.
  • the storage medium can be a magnetic disk, an optical disk, a read-only memory (Read-Only Memory, ROM) or a random access memory (Random Access Memory, RAM), etc.
  • the methods of the above embodiments can be implemented by means of software plus the necessary general hardware platform. Of course, it can also be implemented by hardware, but in many cases the former is better. implementation.
  • the technical solution of the present application can be embodied in the form of a computer software product that is essentially or contributes to the existing technology.
  • the computer software product is stored in a storage medium (such as ROM/RAM, disk , CD), including several instructions to cause a terminal (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in various embodiments of this application.

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Abstract

本申请公开了一种数据传输方法及装置、终端及网络侧设备，属于通信技术领域，本申请实施例的数据传输方法，包括：第一终端通过多个路径与网络侧设备传输用户面数据和/或控制面数据；其中，所述多个路径至少包括第一路径和第二路径，所述第一路径为所述第一终端与所述网络侧设备直接通信的直连路径，所述第二路径为所述第一终端通过第二终端与所述网络侧设备通信的非直连路径；或，所述第一路径为所述第一终端通过所述第二终端与所述网络侧设备通信的非直连路径，所述第二路径为所述第一终端与所述网络侧设备直接通信的直连路径。

Description

数据传输方法及装置、终端及网络侧设备
相关申请的交叉引用
本申请主张在2022年3月24日在中国提交的中国专利申请No.202210303689.X的优先权，其全部内容通过引用包含于此。
技术领域
本申请属于通信技术领域，具体涉及一种数据传输方法及装置、终端及网络侧设备。
背景技术
相关技术中，终端与网络侧设备之间只能建立单路径连接，例如，可以与网络侧设备之间建立直连路径，或者，与网络侧设备之间建立非直连路径。单路径连接的吞吐量有限，并且可靠性有待提高。
发明内容
本申请实施例提供一种数据传输方法及装置、终端及网络侧设备，能够提高通信传输的吞吐量和可靠性。
第一方面，提供了一种数据传输方法，包括：
第一终端通过多个路径与网络侧设备传输用户面数据和/或控制面数据；
其中，所述多个路径至少包括第一路径和第二路径，所述第一路径为所述第一终端与所述网络侧设备直接通信的直连路径，所述第二路径为所述第一终端通过第二终端与所述网络侧设备通信的非直连路径；或
所述第一路径为所述第一终端通过所述第二终端与所述网络侧设备通信的非直连路径，所述第二路径为所述第一终端与所述网络侧设备直接通信的直连路径。
第二方面，提供了一种数据传输装置，包括：
第一传输模块，用于通过多个路径与网络侧设备传输用户面数据和/或控制面数据；
其中，所述多个路径至少包括第一路径和第二路径，所述第一路径为所述第一终端与所述网络侧设备直接通信的直连路径，所述第二路径为所述第一终端通过第二终端与所述网络侧设备通信的非直连路径；或
所述第一路径为所述第一终端通过所述第二终端与所述网络侧设备通信的非直连路径，所述第二路径为所述第一终端与所述网络侧设备直接通信的直连路径。
第三方面，提供了一种数据传输方法，包括：
网络侧设备通过多个路径与第一终端传输用户面数据和/或控制面数据；
其中，所述多个路径至少包括第一路径和第二路径，所述第一路径为所述第一终端与所述网络侧设备直接通信的直连路径，所述第二路径为所述第一终端通过第二终端与所述网络侧设备通信的非直连路径；或
所述第一路径为所述第一终端通过所述第二终端与所述网络侧设备通信的非直连路径，所述第二路径为所述第一终端与所述网络侧设备直接通信的直连路径。
第四方面，提供了一种数据传输装置，包括：
第二传输模块，用于通过多个路径与第一终端传输用户面数据和/或控制面数据；
其中，所述多个路径至少包括第一路径和第二路径，所述第一路径为所述第一终端与所述网络侧设备直接通信的直连路径，所述第二路径为所述第一终端通过第二终端与所述网络侧设备通信的非直连路径；或
所述第一路径为所述第一终端通过所述第二终端与所述网络侧设备通信的非直连路径，所述第二路径为所述第一终端与所述网络侧设备直接通信的直连路径。
第五方面，提供了一种终端，该终端包括处理器和存储器，所述存储器存储可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如第一方面所述的方法的步骤。
第六方面，提供了一种终端，包括处理器及通信接口，其中，所述通信接口用于通过多个路径与网络侧设备传输用户面数据和/或控制面数据；
其中，所述多个路径至少包括第一路径和第二路径，所述第一路径为所 述第一终端与所述网络侧设备直接通信的直连路径，所述第二路径为所述第一终端通过第二终端与所述网络侧设备通信的非直连路径；或
所述第一路径为所述第一终端通过所述第二终端与所述网络侧设备通信的非直连路径，所述第二路径为所述第一终端与所述网络侧设备直接通信的直连路径。
第七方面，提供了一种网络侧设备，该网络侧设备包括处理器和存储器，所述存储器存储可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如第三方面所述的方法的步骤。
第八方面，提供了一种网络侧设备，包括处理器及通信接口，其中，所述通信接口用于通过多个路径与第一终端传输用户面数据和/或控制面数据；
其中，所述多个路径至少包括第一路径和第二路径，所述第一路径为所述第一终端与所述网络侧设备直接通信的直连路径，所述第二路径为所述第一终端通过第二终端与所述网络侧设备通信的非直连路径；或
所述第一路径为所述第一终端通过所述第二终端与所述网络侧设备通信的非直连路径，所述第二路径为所述第一终端与所述网络侧设备直接通信的直连路径。
第九方面，提供了一种数据传输系统，包括：网络侧设备及终端，所述网络侧设备可用于执行如第三方面所述的数据传输方法的步骤，所述终端可用于执行如第一方面所述的数据传输方法的步骤。
第十方面，提供了一种可读存储介质，所述可读存储介质上存储程序或指令，所述程序或指令被处理器执行时实现如第一方面所述的方法的步骤，或者实现如第三方面所述的方法的步骤。
第十一方面，提供了一种芯片，所述芯片包括处理器和通信接口，所述通信接口和所述处理器耦合，所述处理器用于运行程序或指令，实现如第一方面所述的方法，或实现如第三方面所述的方法。
第十二方面，提供了一种计算机程序/程序产品，所述计算机程序/程序产品被存储在存储介质中，所述计算机程序/程序产品被至少一个处理器执行以实现如第一方面所述的数据传输方法，或实现如第三方面所述的数据传输方法的步骤。
在本申请实施例中，第一终端与网络侧设备之间可以建立多路径连接，第一终端与网络侧设备之间可以通过多个路径传输相同或者不同的信令和业务数据，通过增加传输路径从而能够提高通信传输的吞吐量，并且在其中一条路径的链路质量较差时，可以利用其它链路质量较好的路径保证传输的可靠性。
附图说明
图1是本申请实施例可应用的一种无线通信系统的框图；
图2是中继场景的示意图；
图3是旁链路中继(Sidelink Relay，SL relay)架构的示意图；
图4是非SL relay架构的示意图；
图5是本申请实施例第一终端侧数据传输方法的流程示意图；
图6是本申请实施例网络侧设备侧数据传输方法的流程示意图；
图7是本申请实施例第一终端侧数据传输装置的结构示意图；
图8是本申请实施例网络侧设备侧数据传输装置的结构示意图；
图9是本申请实施例通信设备的结构示意图；
图10是本申请实施例终端的结构示意图；
图11是本申请实施例网络侧设备的结构示意图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员所获得的所有其他实施例，都属于本申请保护的范围。
本申请的说明书和权利要求书中的术语“第一”、“第二”等是用于区别类似的对象，而不用于描述特定的顺序或先后次序。应该理解这样使用的术语在适当情况下可以互换，以便本申请的实施例能够以除了在这里图示或描述的那些以外的顺序实施，且“第一”、“第二”所区别的对象通常为一类，并不限定对象的个数，例如第一对象可以是一个，也可以是多个。此外，说 明书以及权利要求中“和/或”表示所连接对象的至少其中之一，字符“/”一般表示前后关联对象是一种“或”的关系。
值得指出的是，本申请实施例所描述的技术不限于长期演进型(Long Term Evolution，LTE)/LTE的演进(LTE-Advanced，LTE-A)系统，还可用于其他无线通信系统，诸如码分多址(Code Division Multiple Access，CDMA)、时分多址(Time Division Multiple Access，TDMA)、频分多址(Frequency Division Multiple Access，FDMA)、正交频分多址(Orthogonal Frequency Division Multiple Access，OFDMA)、单载波频分多址(Single-carrier Frequency Division Multiple Access，SC-FDMA)和其他系统。本申请实施例中的术语“系统”和“网络”常被可互换地使用，所描述的技术既可用于以上提及的系统和无线电技术，也可用于其他系统和无线电技术。以下描述出于示例目的描述了新空口(New Radio，NR)系统，并且在以下大部分描述中使用NR术语，但是这些技术也可应用于NR系统应用以外的应用，如第6代(6th Generation，6G)通信系统。
图1示出本申请实施例可应用的一种无线通信系统的框图。无线通信系统包括终端11和网络侧设备12。其中，终端11可以是手机、平板电脑(Tablet Personal Computer)、膝上型电脑(Laptop Computer)或称为笔记本电脑、个人数字助理(Personal Digital Assistant，PDA)、掌上电脑、上网本、超级移动个人计算机(ultra-mobile personal computer，UMPC)、移动上网装置(Mobile Internet Device，MID)、增强现实(augmented reality，AR)/虚拟现实(virtual reality，VR)设备、机器人、可穿戴式设备(Wearable Device)、车载设备(Vehicle User Equipment，VUE)、行人终端(Pedestrian User Equipment，PUE)、智能家居(具有无线通信功能的家居设备，如冰箱、电视、洗衣机或者家具等)、游戏机、个人计算机(personal computer，PC)、柜员机或者自助机等终端侧设备，可穿戴式设备包括：智能手表、智能手环、智能耳机、智能眼镜、智能首饰(智能手镯、智能手链、智能戒指、智能项链、智能脚镯、智能脚链等)、智能腕带、智能服装等。需要说明的是，在本申请实施例并不限定终端11的具体类型。网络侧设备12可以包括接入网设备或核心网设备，其中，接入网设备也可以称为无线接入网设备、无线接入网(Radio Access Network, RAN)、无线接入网功能或无线接入网单元。接入网设备可以包括基站、无线局域网(Wireless Local Area Network，WLAN)接入点或WiFi节点等，基站可被称为节点B、演进节点B(eNB)、接入点、基收发机站(Base Transceiver Station，BTS)、无线电基站、无线电收发机、基本服务集(Basic Service Set，BSS)、扩展服务集(Extended Service Set，ESS)、家用B节点、家用演进型B节点、发送接收点(Transmitting Receiving Point，TRP)或所述领域中其他某个合适的术语，只要达到相同的技术效果，所述基站不限于特定技术词汇，需要说明的是，在本申请实施例中仅以NR系统中的基站为例进行介绍，并不限定基站的具体类型。
无线通信系统中的中继(Relay)技术，就是在基站与终端之间增加了一个或多个中继节点，负责对无线信号进行一次或者多次的转发，即无线信号要经过多跳才能到达终端。
无线中继技术不仅可用于扩展小区覆盖，弥补小区覆盖盲点，同时也可通过空间资源复用提升小区容量。对于室内覆盖，Relay技术也可起到克服穿透损耗，提升室内覆盖质量的作用。
以较简单的两跳中继为例，无线中继就是将一个基站—终端链路分割为基站—中继站和中继站—终端两个链路，从而有机会将一个质量较差的链路替换为两个质量较好的链路，以获得更高的链路容量及更好的覆盖。
目前已经支持的Relay为终端到网络中继(UE-to-Network relay)，即Relay一端连接UE，一端连接网络侧。跟Relay连接的UE，叫做远端UE(Remote UE)。
一种典型的中继场景如图2所示，这是一个典型的UE-to-Network的场景，Remote UE需要与网络侧传输数据，但由于覆盖不佳，找到Relay UE为其中转，其中Relay UE与基站之间是Uu接口，Relay UE和Remote UE之间是sidelink(PC5)接口。一般来说，Relay UE是开放的，可以为任何Remote UE服务。
相关技术中，Remote UE无线资源控制(Radio Resource Control，RRC)连接建立流程包括以下步骤：
步骤1.Remote UE和Relay UE执行发现(discovery)过程，随后建立 PC5RRC连接。
步骤2.Remote UE向基站发送RRC Setup Request消息，基站向Remote UE回复RRC Setup消息。具体地，这两条消息是Relay UE中转发送到基站或Remote UE。
步骤3.基站和remote UE之间建立信令无线承载1(Signalling Radio Bearer1，SRB1)专用承载，该remote UE SRB1专用承载由PC5(remote UE和Relay UE之间)和Uu(Relay UE和基站之间)两段无线链路控制(Radio Link Control，RLC)信道组成。具体的，两段RLC信道用于Remote UE发送/接收与基站之间的SRB1类型的RRC消息。
步骤4.Remote UE向基站发送无线资源控制建立完成(RRC Setup Complete)消息。具体地，这条消息是Relay UE中转发送到基站。
步骤5.Remote UE和基站之间激活安全。
步骤6.基站和Remote UE之间建立SRB2/数据无线承载(Data Radio Bearer，DRB)专用承载，该Remote UE SRB2/DRB专用承载由PC5(Remote UE和Relay UE之间)和Uu(Relay UE和基站之间)两段RLC信道组成。具体的，两段RLC信道用于Remote UE发送/接收与基站之间的SRB2类型的RRC/NAS消息以及上下行业务数据。
针对旁链路中继(SL relay架构)，多路径是指Remote UE同时建立了非直连路径(indirect path)和直连路径(direct path)，如图3所示。
针对非SL relay架构，则两个UE之间的连接并不是sidelink(PC5)接口，假设它们之间的接口为有线连接或者理想的UE间连接(ideal inter-UE connection)。这里多路径是指Primary UE同时建立了indirect path和direct path，如图4所示。
本实施例中，indirect path译为非直连路径，指Remote UE(或Primary UE)通过Relay UE(或Secondary UE)以及Relay UE(或Secondary UE)的Uu空口与基站建立RRC连接的无线链路。
Direct path译为直连路径，指Remote UE(或Primary UE)通过自己的Uu空口与基站建立RRC连接的无线链路。
下面结合附图，通过一些实施例及其应用场景对本申请实施例提供的数 据传输方法进行详细地说明。
本申请实施例提供一种数据传输方法，如图5所示，包括：
步骤101：第一终端通过多个路径与网络侧设备传输用户面数据和/或控制面数据；
其中，所述多个路径至少包括第一路径和第二路径，所述第一路径为所述第一终端与所述网络侧设备直接通信的直连路径，所述第二路径为所述第一终端通过第二终端与所述网络侧设备通信的非直连路径；或
所述第一路径为所述第一终端通过所述第二终端与所述网络侧设备通信的非直连路径，所述第二路径为所述第一终端与所述网络侧设备直接通信的直连路径。
在本申请实施例中，第一终端与网络侧设备之间可以建立多路径连接，第一终端与网络侧设备之间可以通过多个路径传输不同的信令和业务数据，能够提高通信传输的吞吐量，并且在其中一条路径的链路质量较差时，可以利用其它链路质量较好的路径保证传输的可靠性。
本实施例中，第一终端可以为Remote UE或初级UE(Primary UE)，第二终端可以为Relay UE或次级UE(Secondary UE)。
一些实施例中，所述第一终端通过多个路径与网络侧设备传输用户面数据和/或控制面数据之前，所述方法包括：
所述第一终端通过所述第一路径与所述网络侧设备通信；
在满足路径添加条件的情况下，所述第一终端通过已有的第一路径向所述网络侧设备发送多路径添加请求消息，请求添加所述第二路径。
其中，路径添加条件可以是协议约定的或网络侧设备配置的或网络侧设备预配置的。
路径添加过程也可以理解为终端协作过程，因此，还可以等价描述为：在满足终端协作条件的情况下，所述第一终端通过已有的第一路径向所述网络侧设备发送终端协作请求消息，请求与所述第二终端协作。
基于上述解释，多路径添加请求消息为path addition request，终端协作请求消息为UE aggregation request。
一具体实施例中，第一终端已经通过直连路径与网络侧设备建立了RRC 连接以及相关的用户面(User Plane，UP)路径，第一终端可以利用已有的直连路径与网络侧设备之间建立非直连路径。
具体地，当remote UE或者primary UE处于小区内部或者链路条件较好时，例如该第一UE到服务小区的参考信号接收功率(Reference Signal Receiving Power，RSRP)不低于一定的门限，此时该第一UE如果有数据传输的需求，则可以直接与服务小区建立RRC连接，并建立DRB路径，即建立了direct CP+UP路径，可以通过直连路径(即第一路径)与网络侧设备通信，传输控制面数据和用户面数据。
本实施例的路径建立方法包括以下步骤：
步骤a1、第一终端判断是否满足预设的路径添加条件，路径添加条件具体包括以下至少一项：
所述第一终端的数据缓存的大小(buffer size)大于或等于第一阈值；
所述第一终端的业务可靠性(reliability)要求大于或等于第二阈值；
所述第一终端的上层指示所述第一终端的业务通过所述第二路径传输或通过所述第一路径和所述第二路径传输，其中，上层(upper layers)为第一终端内部RRC层以上的上层实体的泛称，具体可以包括：NAS层(Non-Access Stratum layer)，ProSe层(Proximity Service layer)，应用层(Application layer)；
接收到所述网络侧设备的第一寻呼指示；
接收到所述网络侧设备的第二指示，所述第二指示用以指示所述网络侧设备支持多路径功能；
存在至少一个候选终端的链路质量满足预设的通信条件。
其中，所述至少一个候选终端包括所述第二终端。
至少一个候选终端的链路质量满足预设的通信条件包括以下至少一项：
所述候选终端与所述第一终端之间(PC5接口)的信号质量满足预设的通信条件；
所述候选终端的服务小区的信号质量满足预设的通信条件。
对于下行数据到达的场景，潜在需要增强寻呼消息(paging message)，也就是向第一终端发送第一寻呼指示，以便在第一寻呼指示中指示UE的路径建立方式，携带以下信息至少之一：
指示所述第一终端建立所述第一路径和/或所述第二路径，即指示第一终端建立单路径或多路径，单路径为第一路径或第二路径；
在指示所述第一终端建立单路径的情况下，指示建立的路径为直连路径或非直连路径；
在指示所述第一终端建立多路径的情况下，指示通过已有的直连数据触发非直连路径添加流程或通过已有的非直连数据触发直连路径添加流程或同时建立直连路径和非直连路径。
如果第一寻呼指示是1bit编码，则可以区分：单路径(either direct or indirect path)，多路径(both direct and indirect path)；如果第一寻呼指示是2bit编码，则可以区分：单路径(direct path only)，单路径(indirect path only),多路径(both direct and indirect path)。
其中，下行数据到达可以是基站寻呼终端，基站与终端之间通过RRC消息建立承载，在建立的承载上发送数据。
步骤a2、在第一终端判断满足预设的路径添加条件的情况下，第一终端通过已有的第一路径向所述网络侧设备发送多路径添加请求消息(aggregation request)，请求添加所述第二路径；
其中，可以利用已有的消息携带多路径添加请求消息，也可以新定义一条多路径添加请求消息。上述已有的消息包括以下至少一项：终端辅助信息(UE Assistance Information，UAI)、副链路终端信息(Sidelink UE Information,SUI)、测量报告(Measurement report)、无线资源控制建立完成(RRC Setup Complete)、无线资源控制恢复完成(RRC Resume Complete)消息，无线资源控制重建完成(RRC Resume Complete)消息。
进一步地，所述多路径添加请求消息还可以包括第一信息，所述第一信息包括以下至少一项：
所述第一终端与所述候选终端之间的信号质量；
所述候选终端的标识信息；
所述候选终端的服务小区标识信息；
所述候选终端的服务小区的信号质量。
通过将第一信息发送给网络侧设备，可以帮助网络侧设备从候选终端中 选择第二终端，来建立第一终端与第二终端的链路，并且保证链路具有较好的通信质量。
步骤a3、所述第一终端接收所述网络侧设备发送的多路径添加配置消息(aggregation response)；
其中，可以利用已有的消息携带多路径添加配置消息，也可以新定义一条多路径添加配置消息。已有的消息包括RRC同步重配置(reconfiguration with sync)消息。
其中，所述多路径添加配置消息包括以下至少一项：
所述第二终端的标识信息；
所述第二终端的服务小区标识信息；
第一指示信息，用于指示进行路径切换操作或路径添加操作，第一指示信息可以采用1比特，或者定义一个新的信息元素来承载第一指示信息，在第一指示信息采用1比特时，可以在第一指示信息为0时，指示进行路径切换操作，在第一指示信息为1时，指示增加路径；或，可以在第一指示信息为1时，指示进行路径切换操作，在第一指示信息为0时，指示增加路径；
通过所述第一路径和所述第二路径进行控制面数据传输的规则；
通过所述第一路径和所述第二路径进行用户面数据传输的规则。
在建立两条路径(indirect path和direct path)之后，可以由网络侧设备配置进行用户面数据传输和/或控制面数据传输的规则，或者，通过所述第一路径和所述第二路径进行用户面数据和/或控制面数据传输的规则为协议约定的。
在通过所述第一路径和所述第二路径进行用户面数据和/或控制面数据传输的规则为网络侧设备配置的情况下，所述方法还包括：
所述第一终端接收所述网络侧设备的路径配置信息，所述路径配置信息包括通过所述第一路径和所述第二路径进行用户面数据和/或控制面数据传输的规则。网络侧设备可以通过RRC消息或者广播消息发送路径配置信息。
本实施例中，通过进行用户面数据和/或控制面数据传输的规则可以指示每条消息或每个承载类型走哪个路径，从而完成一次完整的RRC连接建立、恢复和/或重建流程。
一些实施例中，所述规则可以包括以下任一项：
通过所述第一路径和所述第二路径传输信令的规则，不同的信令可以通过不同的路径传输，例如，SRB0的任意信令通过indirect path传输，SRB1和SRB2的任意信令通过direct path传输；
通过所述第一路径和所述第二路径传输上行数据和/或下行数据的规则，不同发送方向的数据通过不同路径(indirect path或direct path)传输；例如，上行(UpLink，UL)方向的任意信令通过indirect path传输,下行(DownLink，DL)方向的任意信令通过direct path传输，这样可以节省功耗；
信令无线承载SRB1的不同部分能够在所述第一路径和所述第二路径上同时传输，比如SRB1的第一部分在第一路径上传输，SRB1的第二部分在第二路径上传输，这样通过多路径传输能够提高数据传输的可靠性，并且能够提高数据传输的速率和吞吐量；
SRB1在复制后能够在所述第一路径和所述第二路径上同时传输，这样通过多路径传输能够提高数据传输的可靠性，并且能够提高数据传输的速率和吞吐量；
数据无线承载DRB的不同部分能够在所述第一路径和所述第二路径上同时传输，比如DRB的第一部分在第一路径上传输，DRB的第二部分在第二路径上传输，这样通过多路径传输能够提高数据传输的可靠性，并且能够提高数据传输的速率和吞吐量；
DRB在复制后能够在所述第一路径和所述第二路径上同时传输，这样通过多路径传输能够提高数据传输的可靠性，并且能够提高数据传输的速率和吞吐量。
一些实施例中，所述规则还包括：
所述第一终端和所述第二终端处于同一基站的场景(intra-gNB场景)下，不允许传输SRB3和分离SRB3，即从终端侧角度，UE不会收到基站配置的SRB3和split SRB3；从网络侧角度，基站不支持SRB3和split SRB3的配置。
一具体示例中，可以由协议约定所有消息的传输路径，比如在indirect path发送RRCSetupRequest消息和RRCSetupComplete消息(发送功率小，路径短),在direct path接收RRCSetup消息。
另一具体示例中，可以由网络侧设备和协议约定共同指示所有消息的传输路径，比如协议约定SRB0的传输路径，在indirect path发送RRCSetupRequest消息和接收RRCSetup消息，随后通过RRCSetup消息里携带的指示确定SRB1走direct path还是indirect path。SRB2和/或DRB的传输规则可以默认遵循SRB1的传输规则，也可以通过RRC Reconfiguration消息进一步灵活指示SRB2和/或DRB的传输规则。
步骤a4、所述第一终端向所述网络侧设备发送多路径配置完成消息(aggregation complete)。
其中，可以利用已有的消息携带多路径配置完成消息，也可以新定义一条多路径配置完成消息。已有的消息包括RRC重配置完成(reconfiguration complete)消息。
一些实施例中，在第二路径建立不成功的情况下，第一终端向网络侧设备发送多路径添加失败消息。
另一具体实施例中，第一终端已经通过非直连路径与网络侧设备建立了RRC连接以及相关的用户面(UP)路径，第一终端可以利用已有的非直连路径(即第一路径)与网络侧设备之间通信，以建立直连路径。
具体地，当remote UE或者primary UE处于小区边缘或者链路条件不好时，例如该第一UE到服务小区的参考信号接收功率(RSRP)低于一定的门限，此时该第一UE如果有数据传输的需求，可以找到一个适合的relay UE或者secondary UE(该第二UE有较好的到网络侧的链路质量保证，例如该第二UE RSRP高于一定的门限，可选的，也可以同时配置一个最高RSRP门限，该第二UE RSRP不能超过该最高RSRP门限，避免距离基站很近的第二UE进行中转数据时造成干扰过大)，并通过该relay UE或者secondary UE向服务小区建立RRC连接，并建立DRB路径，即建立了indirect CP+UP路径，可以通过非直连路径传输控制面数据和用户面数据。
本实施例的路径建立方法包括以下步骤：
步骤b1、第一终端判断是否满足预设的路径添加条件，路径添加条件具体包括以下至少一项：
所述第一终端的数据缓存的大小(buffer size)大于或等于第一阈值；
所述第一终端的业务可靠性(reliability)要求大于或等于第二阈值；
所述第一终端的上层指示所述第一终端的业务通过所述第二路径传输或通过所述第一路径和所述第二路径传输，其中，上层(upper layers)为第一终端内部RRC层以上的上层实体的泛称，具体可以包括：NAS层(Non-Access Stratum layer)，ProSe层(Proximity Service layer)，应用层(Application layer)；
接收到所述网络侧设备的第一寻呼指示；
接收到所述网络侧设备的第二指示，所述第二指示用以指示所述网络侧设备支持多路径功能；
存在至少一个候选小区满足预设的通信条件。
其中，所述至少一个候选小区包括所述第一终端在所述直连路径的小区。
对于下行数据到达的场景，潜在需要增强寻呼消息(paging message)，也就是向第一终端发送第一寻呼指示，以便在第一寻呼指示中指示UE的路径建立方式，携带以下信息至少之一：
指示所述第一终端建立所述第一路径和/或所述第二路径，即指示第一终端建立单路径或多路径，单路径为第一路径或第二路径；
在指示所述第一终端建立单路径的情况下，指示建立的路径为直连路径或非直连路径；
在指示所述第一终端建立多路径的情况下，指示通过已有的直连数据触发非直连路径添加流程或通过已有的非直连数据触发直连路径添加流程或同时建立直连路径和非直连路径。
如果第一寻呼指示是1bit编码，则可以区分：单路径(either direct or indirect path)，多路径(both direct and indirect path)；如果第一寻呼指示是2bit编码，则可以区分：单路径(direct path only)，单路径(indirect path only),多路径(both direct and indirect path)。
其中，下行数据到达可以是基站寻呼终端，基站与终端之间通过RRC消息建立承载，在建立的承载上发送数据。
步骤b2、在第一终端判断满足预设的路径添加条件的情况下，第一终端通过已有的第一路径向所述网络侧设备发送多路径添加请求消息(aggregation request)，请求添加所述第二路径；
其中，可以利用已有的消息携带多路径添加请求消息，也可以新定义一条多路径添加请求消息。上述已有的消息包括以下至少一项：终端辅助信息(UE Assistance Information，UAI)、副链路终端信息(Sidelink UE Information,SUI)、测量报告(Measurement report)、无线资源控制建立完成(RRC Setup Complete)、无线资源控制恢复完成(RRC Resume Complete)消息，无线资源控制重建完成(RRC Resume Complete)消息。
进一步地，所述多路径添加请求消息还可以包括第一信息，所述第一信息包括以下至少一项：
所述候选小区的小区标识信息；
所述第一终端的所述候选小区的信号质量。
通过将第一信息发送给网络侧设备，可以帮助网络侧设备从候选小区中选择小区，来建立第一终端与小区之间的直连路径，并且保证直连路径具有较好的通信质量。
步骤b3、所述第一终端接收所述网络侧设备发送的多路径添加配置消息(aggregation response)；
其中，可以利用已有的消息携带多路径添加配置消息，也可以新定义一条多路径添加配置消息。已有的消息包括RRC同步重配置(reconfiguration with sync)消息。
其中，所述多路径添加配置消息包括以下至少一项：
所述直连路径的小区标识信息；
第一指示信息，用于指示进行路径切换操作或路径添加操作，第一指示信息可以采用1比特，或者定义一个新的信息元素来承载第一指示信息，在第一指示信息采用1比特时，可以在第一指示信息为0时，指示进行路径切换操作，在第一指示信息为1时，指示增加路径；或，可以在第一指示信息为1时，指示进行路径切换操作，在第一指示信息为0时，指示增加路径；
通过所述第一路径和所述第二路径进行控制面数据传输的规则；
通过所述第一路径和所述第二路径进行用户面数据传输的规则。
在建立两条路径(indirect path和direct path)之后，可以由网络侧设备配置进行用户面数据传输和/或控制面数据传输的规则，或者，通过所述第一 路径和所述第二路径进行用户面数据和/或控制面数据传输的规则为协议约定的。
在通过所述第一路径和所述第二路径进行用户面数据和/或控制面数据传输的规则为网络侧设备配置的情况下，所述方法还包括：
所述第一终端接收所述网络侧设备的路径配置信息，所述路径配置信息包括通过所述第一路径和所述第二路径进行用户面数据和/或控制面数据传输的规则。网络侧设备可以通过RRC消息或者广播消息发送路径配置信息。
本实施例中，通过进行用户面数据和/或控制面数据传输的规则可以指示每条消息或每个承载类型走哪个路径，从而完成一次完整的RRC连接建立、恢复和/或重建流程。
一些实施例中，所述规则可以包括以下任一项：
通过所述第一路径和所述第二路径传输信令的规则，不同的信令可以通过不同的路径传输，例如，SRB0的任意信令通过indirect path传输，SRB1和SRB2的任意信令通过direct path传输；
通过所述第一路径和所述第二路径传输上行数据和/或下行数据的规则，不同发送方向的数据通过不同路径(indirect path或direct path)传输；例如，上行UL方向的任意信令通过indirect path传输,下行DL方向的任意信令通过direct path传输，这样可以节省功耗；
信令无线承载SRB1的不同部分能够在所述第一路径和所述第二路径上同时传输，比如SRB1的第一部分在第一路径上传输，SRB1的第二部分在第二路径上传输，这样通过多路径传输能够提高数据传输的可靠性，并且能够提高数据传输的速率和吞吐量；
SRB1在复制后能够在所述第一路径和所述第二路径上同时传输，这样通过多路径传输能够提高数据传输的可靠性，并且能够提高数据传输的速率和吞吐量；
数据无线承载DRB的不同部分能够在所述第一路径和所述第二路径上同时传输，比如DRB的第一部分在第一路径上传输，DRB的第二部分在第二路径上传输，这样通过多路径传输能够提高数据传输的可靠性，并且能够提高数据传输的速率和吞吐量；
DRB在复制后能够在所述第一路径和所述第二路径上同时传输，这样通过多路径传输能够提高数据传输的可靠性，并且能够提高数据传输的速率和吞吐量。
一些实施例中，所述规则还包括：
所述第一终端和所述第二终端处于同一基站场景(intra-gNB场景)下，不允许传输SRB3和分离SRB3，即从终端侧角度，UE不会收到基站配置的SRB3和split SRB3；从网络侧角度，基站不支持SRB3和split SRB3的配置。
一具体示例中，可以由协议约定所有消息的传输路径，比如在indirect path发送RRCSetupRequest消息和RRCSetupComplete消息(发送功率小，路径短),在direct path接收RRCSetup消息。
另一具体示例中，可以由网络侧设备和协议约定共同指示所有消息的传输路径，比如协议约定SRB0的传输路径，在indirect path发送RRCSetupRequest消息和接收RRCSetup消息，随后通过RRCSetup消息里携带的指示确定SRB1走direct path还是indirect path。SRB2和/或DRB的传输规则可以默认遵循SRB1的传输规则，也可以通过RRC Reconfiguration消息进一步灵活指示SRB2和/或DRB的传输规则。
步骤b4、所述第一终端向所述网络侧设备发送多路径配置完成消息(aggregation complete)。
其中，可以利用已有的消息携带多路径配置完成消息，也可以新定义一条多路径配置完成消息。已有的消息包括RRC重配置完成(reconfiguration complete)消息。
一些实施例中，在第二路径建立不成功的情况下，第一终端向网络侧设备发送多路径添加失败消息。
本申请实施例还提供了一种数据传输方法，如图6所示，包括：
步骤201：网络侧设备通过多个路径与第一终端传输用户面数据和/或控制面数据；
其中，所述多个路径至少包括第一路径和第二路径，所述第一路径为所述第一终端与所述网络侧设备直接通信的直连路径，所述第二路径为所述第一终端通过第二终端与所述网络侧设备通信的非直连路径；或
所述第一路径为所述第一终端通过所述第二终端与所述网络侧设备通信的非直连路径，所述第二路径为所述第一终端与所述网络侧设备直接通信的直连路径。
在本申请实施例中，第一终端与网络侧设备之间可以建立多路径连接，第一终端与网络侧设备之间可以通过多个路径传输不同的信令和业务数据，能够提高通信传输的吞吐量，并且在其中一条路径的链路质量较差时，可以利用其它链路质量较好的路径保证传输的可靠性。
一些实施例中，所述网络侧设备通过多个路径与第一终端传输用户面数据和/或控制面数据之前，所述方法包括：
所述网络侧设备通过所述第一路径与所述第一终端通信；
所述网络侧设备接收所述第一终端通过已有的第一路径发送的多路径添加请求消息，请求添加所述第二路径，所述多路径添加请求消息为所述第一终端判断满足路径添加条件后发送。
其中，路径添加条件可以是协议约定的或网络侧设备配置的或网络侧设备预配置的。
一些实施例中，所述网络侧设备通过多个路径与第一终端传输用户面数据和/或控制面数据之前，所述方法还包括：
所述网络侧设备通过系统广播消息和/或无线资源控制RRC专用消息发送第二指示，所述第二指示用以指示所述网络侧设备支持多路径功能。
其中，系统广播消息可以是SIB1、SIB12或者一个新的SIB，RRC专用消息可以是RRC连接建立(RRC setup)，RRC连接恢复(RRC resume)，RRC重配置(RRC reconfiguration)或一个新的RRC专用消息。
一具体实施例中，第一终端已经通过直连路径与网络侧设备建立了RRC连接以及相关的用户面(UP)路径，第一终端可以利用已有的直连路径与网络侧设备之间建立非直连路径。
具体地，当remote UE或者primary UE处于小区内部或者链路条件较好时，例如该第一UE到服务小区的参考信号接收功率(RSRP)不低于一定的门限，此时该第一UE如果有数据传输的需求，则可以直接与服务小区建立RRC连接，并建立DRB路径，即建立了direct CP+UP路径，可以通过直连 路径(即第一路径)与网络侧设备通信，传输控制面数据和用户面数据。
本实施例的路径建立方法包括以下步骤：
步骤a1、第一终端判断是否满足预设的路径添加条件，路径添加条件具体包括以下至少一项：
所述第一终端的数据缓存的大小(buffer size)大于或等于第一阈值；
所述第一终端的业务可靠性(reliability)要求大于或等于第二阈值；
所述第一终端的上层指示所述第一终端的业务通过所述第二路径传输或通过所述第一路径和所述第二路径传输，其中，上层(upper layers)为第一终端内部RRC层以上的上层实体的泛称，具体可以包括：NAS层(Non-Access Stratum layer)，ProSe层(Proximity Service layer)，应用层(Application layer)；
接收到所述网络侧设备的第一寻呼指示；
接收到所述网络侧设备的第二指示，所述第二指示用以指示所述网络侧设备支持多路径功能；
存在至少一个候选终端的链路质量满足预设的通信条件。
其中，所述至少一个候选终端包括所述第二终端。
至少一个候选终端的链路质量满足预设的通信条件包括以下至少一项：
所述候选终端与所述第一终端之间(PC5接口)的信号质量满足预设的通信条件；
所述候选终端的服务小区的信号质量满足预设的通信条件。
对于下行数据到达的场景，潜在需要增强寻呼消息(paging message)，也就是向第一终端发送第一寻呼指示，以便在第一寻呼指示中指示UE的路径建立方式，携带以下信息至少之一：
指示所述第一终端建立所述第一路径和/或所述第二路径，即指示第一终端建立单路径或多路径，单路径为第一路径或第二路径；
在指示所述第一终端建立单路径的情况下，指示建立的路径为直连路径或非直连路径；
在指示所述第一终端建立多路径的情况下，指示通过已有的直连数据触发非直连路径添加流程或通过已有的非直连数据触发直连路径添加流程或同时建立直连路径和非直连路径。
如果第一寻呼指示是1bit编码，则可以区分：单路径(either direct or indirect path)，多路径(both direct and indirect path)；如果第一寻呼指示是2bit编码，则可以区分：单路径(direct path only)，单路径(indirect path only),多路径(both direct and indirect path)。
其中，下行数据到达可以是基站寻呼终端，基站与终端之间通过RRC消息建立承载，在建立的承载上发送数据。
步骤a2、在第一终端判断满足预设的路径添加条件的情况下，第一终端通过已有的第一路径向所述网络侧设备发送多路径添加请求消息(aggregation request)，请求添加所述第二路径；
其中，可以利用已有的消息携带多路径添加请求消息，也可以新定义一条多路径添加请求消息。上述已有的消息包括以下至少一项：终端辅助信息(UE Assistance Information，UAI)、副链路终端信息(Sidelink UE Information,SUI)、测量报告(Measurement report)、无线资源控制建立完成(RRC Setup Complete)、无线资源控制恢复完成(RRC Resume Complete)消息，无线资源控制重建完成(RRC Resume Complete)消息。
进一步地，所述多路径添加请求消息还可以包括第一信息，所述第一信息包括以下至少一项：
所述第一终端与所述候选终端之间的信号质量；
所述候选终端的标识信息；
所述候选终端的服务小区标识信息；
所述候选终端的服务小区的信号质量。
通过将第一信息发送给网络侧设备，可以帮助网络侧设备从候选终端中选择第二终端，来建立第一终端与第二终端的链路，并且保证链路具有较好的通信质量。
步骤a3、所述第一终端接收所述网络侧设备发送的多路径添加配置消息(aggregation response)；
其中，可以利用已有的消息携带多路径添加配置消息，也可以新定义一条多路径添加配置消息。已有的消息包括RRC同步重配置(reconfiguration with sync)消息。
其中，所述多路径添加配置消息包括以下至少一项：
所述第二终端的标识信息；
所述第二终端的服务小区标识信息；
第一指示信息，用于指示进行路径切换操作或路径添加操作，第一指示信息可以采用1比特，或者定义一个新的信息元素来承载第一指示信息，在第一指示信息采用1比特时，可以在第一指示信息为0时，指示进行路径切换操作，在第一指示信息为1时，指示增加路径；或，可以在第一指示信息为1时，指示进行路径切换操作，在第一指示信息为0时，指示增加路径；
通过所述第一路径和所述第二路径进行控制面数据传输的规则；
通过所述第一路径和所述第二路径进行用户面数据传输的规则。
在建立两条路径(indirect path和direct path)之后，可以由网络侧设备配置进行用户面数据传输和/或控制面数据传输的规则，或者，通过所述第一路径和所述第二路径进行用户面数据和/或控制面数据传输的规则为协议约定的。
在通过所述第一路径和所述第二路径进行用户面数据和/或控制面数据传输的规则为网络侧设备配置的情况下，所述方法还包括：
所述第一终端接收所述网络侧设备的路径配置信息，所述路径配置信息包括通过所述第一路径和所述第二路径进行用户面数据和/或控制面数据传输的规则。网络侧设备可以通过RRC消息或者广播消息发送路径配置信息。
本实施例中，通过进行用户面数据和/或控制面数据传输的规则可以指示每条消息或每个承载类型走哪个路径，从而完成一次完整的RRC连接建立、恢复和/或重建流程。
一些实施例中，所述规则可以包括以下任一项：
通过所述第一路径和所述第二路径传输信令的规则，不同的信令可以通过不同的路径传输，例如，SRB0的任意信令通过indirect path传输，SRB1和SRB2的任意信令通过direct path传输；
通过所述第一路径和所述第二路径传输上行数据和/或下行数据的规则，不同发送方向的数据通过不同路径(indirect path或direct path)传输；例如，上行UL方向的任意信令通过indirect path传输,下行DL方向的任意信令通 过direct path传输，这样可以节省功耗；
信令无线承载SRB1的不同部分能够在所述第一路径和所述第二路径上同时传输，比如SRB1的第一部分在第一路径上传输，SRB1的第二部分在第二路径上传输，这样通过多路径传输能够提高数据传输的可靠性，并且能够提高数据传输的速率和吞吐量；
SRB1在复制后能够在所述第一路径和所述第二路径上同时传输，这样通过多路径传输能够提高数据传输的可靠性，并且能够提高数据传输的速率和吞吐量；
数据无线承载DRB的不同部分能够在所述第一路径和所述第二路径上同时传输，比如DRB的第一部分在第一路径上传输，DRB的第二部分在第二路径上传输，这样通过多路径传输能够提高数据传输的可靠性，并且能够提高数据传输的速率和吞吐量；
DRB在复制后能够在所述第一路径和所述第二路径上同时传输，这样通过多路径传输能够提高数据传输的可靠性，并且能够提高数据传输的速率和吞吐量。
一些实施例中，所述规则还包括：
所述第一终端和所述第二终端处于同一基站场景(intra-gNB场景)下，不允许传输SRB3和分离SRB3，即从终端侧角度，UE不会收到基站配置的SRB3和split SRB3；从网络侧角度，基站不支持SRB3和split SRB3的配置。
一具体示例中，可以由协议约定所有消息的传输路径，比如在indirect path发送RRCSetupRequest消息和RRCSetupComplete消息(发送功率小，路径短),在direct path接收RRCSetup消息。
另一具体示例中，可以由网络侧设备和协议约定共同指示所有消息的传输路径，比如协议约定SRB0的传输路径，在indirect path发送RRCSetupRequest消息和接收RRCSetup消息，随后通过RRCSetup消息里携带的指示确定SRB1走direct path还是indirect path。SRB2和/或DRB的传输规则可以默认遵循SRB1的传输规则，也可以通过RRC Reconfiguration消息进一步灵活指示SRB2和/或DRB的传输规则。
步骤a4、所述第一终端向所述网络侧设备发送多路径配置完成消息 (aggregation complete)。
其中，可以利用已有的消息携带多路径配置完成消息，也可以新定义一条多路径配置完成消息。已有的消息包括RRC重配置完成(reconfiguration complete)消息。
另一具体实施例中，第一终端已经通过非直连路径与网络侧设备建立了RRC连接以及相关的用户面(UP)路径，第一终端可以利用已有的非直连路径(即第一路径)与网络侧设备之间通信，以建立直连路径。
具体地，当remote UE或者primary UE处于小区边缘或者链路条件不好时，例如该第一UE到服务小区的参考信号接收功率(RSRP)低于一定的门限，此时该第一UE如果有数据传输的需求，可以找到一个适合的relay UE或者secondary UE(该第二UE有较好的到网络侧的链路质量保证，例如该第二UE RSRP高于一定的门限，可选的，也可以同时配置一个最高RSRP门限，该第二UE RSRP不能超过该最高RSRP门限，避免距离基站很近的第二UE进行中转数据时造成干扰过大)，并通过该relay UE或者secondary UE向服务小区建立RRC连接，并建立DRB路径，即建立了indirect CP+UP路径，可以通过非直连路径传输控制面数据和用户面数据。
一些实施例中，在第二路径建立不成功的情况下，第一终端向网络侧设备发送多路径添加失败消息。
本实施例的路径建立方法包括以下步骤：
步骤b1、第一终端判断是否满足预设的路径添加条件，路径添加条件具体包括以下至少一项：
所述第一终端的数据缓存的大小(buffer size)大于或等于第一阈值；
所述第一终端的业务可靠性(reliability)要求大于或等于第二阈值；
所述第一终端的上层指示所述第一终端的业务通过所述第二路径传输或通过所述第一路径和所述第二路径传输，其中，上层(upper layers)为第一终端内部RRC层以上的上层实体的泛称，具体可以包括：NAS层(Non-Access Stratum layer)，ProSe层(Proximity Service layer)，应用层(Application layer)；
接收到所述网络侧设备的第一寻呼指示；
接收到所述网络侧设备的第二指示，所述第二指示用以指示所述网络侧 设备支持多路径功能；
存在至少一个候选小区满足预设的通信条件。
其中，所述至少一个候选小区包括所述第一终端在所述直连路径的小区。
对于下行数据到达的场景，潜在需要增强寻呼消息(paging message)，也就是向第一终端发送第一寻呼指示，以便在第一寻呼指示中指示UE的路径建立方式，携带以下信息至少之一：
指示所述第一终端建立所述第一路径和/或所述第二路径，即指示第一终端建立单路径或多路径，单路径为第一路径或第二路径；
在指示所述第一终端建立单路径的情况下，指示建立的路径为直连路径或非直连路径；
在指示所述第一终端建立多路径的情况下，指示通过已有的直连数据触发非直连路径添加流程或通过已有的非直连数据触发直连路径添加流程或同时建立直连路径和非直连路径。
如果第一寻呼指示是1bit编码，则可以区分：单路径(either direct or indirect path)，多路径(both direct and indirect path)；如果第一寻呼指示是2bit编码，则可以区分：单路径(direct path only)，单路径(indirect path only),多路径(both direct and indirect path)。
其中，下行数据到达可以是基站寻呼终端，基站与终端之间通过RRC消息建立承载，在建立的承载上发送数据。
步骤b2、在第一终端判断满足预设的路径添加条件的情况下，第一终端通过已有的第一路径向所述网络侧设备发送多路径添加请求消息(aggregation request)，请求添加所述第二路径；
其中，可以利用已有的消息携带多路径添加请求消息，也可以新定义一条多路径添加请求消息。上述已有的消息包括以下至少一项：终端辅助信息(UE Assistance Information，UAI)、副链路终端信息(Sidelink UE Information,SUI)、测量报告(Measurement report)、无线资源控制建立完成(RRC Setup Complete)、无线资源控制恢复完成(RRC Resume Complete)消息，无线资源控制重建完成(RRC Resume Complete)消息。
进一步地，所述多路径添加请求消息还可以包括第一信息，所述第一信 息包括以下至少一项：
所述候选小区的小区标识信息；
所述第一终端的所述候选小区的信号质量。
通过将第一信息发送给网络侧设备，可以帮助网络侧设备从候选小区中选择小区，来建立第一终端与小区之间的直连路径，并且保证直连路径具有较好的通信质量。
步骤b3、所述第一终端接收所述网络侧设备发送的多路径添加配置消息(aggregation response)；
其中，可以利用已有的消息携带多路径添加配置消息，也可以新定义一条多路径添加配置消息。已有的消息包括RRC同步重配置(reconfiguration with sync)消息。
其中，所述多路径添加配置消息包括以下至少一项：
所述直连路径的小区标识信息；
第一指示信息，用于指示进行路径切换操作或路径添加操作，第一指示信息可以采用1比特，或者定义一个新的信息元素来承载第一指示信息，在第一指示信息采用1比特时，可以在第一指示信息为0时，指示进行路径切换操作，在第一指示信息为1时，指示增加路径；或，可以在第一指示信息为1时，指示进行路径切换操作，在第一指示信息为0时，指示增加路径；
通过所述第一路径和所述第二路径进行控制面数据传输的规则；
通过所述第一路径和所述第二路径进行用户面数据传输的规则。
在建立两条路径(indirect path和direct path)之后，可以由网络侧设备配置进行用户面数据传输和/或控制面数据传输的规则，或者，通过所述第一路径和所述第二路径进行用户面数据和/或控制面数据传输的规则为协议约定的。
在通过所述第一路径和所述第二路径进行用户面数据和/或控制面数据传输的规则为网络侧设备配置的情况下，所述方法还包括：
所述第一终端接收所述网络侧设备的路径配置信息，所述路径配置信息包括通过所述第一路径和所述第二路径进行用户面数据和/或控制面数据传输的规则。网络侧设备可以通过RRC消息或者广播消息发送路径配置信息。
本实施例中，通过进行用户面数据和/或控制面数据传输的规则可以指示每条消息或每个承载类型走哪个路径，从而完成一次完整的RRC连接建立、恢复和/或重建流程。
一些实施例中，所述规则可以包括以下任一项：
通过所述第一路径和所述第二路径传输信令的规则，不同的信令可以通过不同的路径传输，例如，SRB0的任意信令通过indirect path传输，SRB1和SRB2的任意信令通过direct path传输；
通过所述第一路径和所述第二路径传输上行数据和/或下行数据的规则，不同发送方向的数据通过不同路径(indirect path或direct path)传输；例如，上行UL方向的任意信令通过indirect path传输,下行DL方向的任意信令通过direct path传输，这样可以节省功耗；
信令无线承载SRB1的不同部分能够在所述第一路径和所述第二路径上同时传输，比如SRB1的第一部分在第一路径上传输，SRB1的第二部分在第二路径上传输，这样通过多路径传输能够提高数据传输的可靠性，并且能够提高数据传输的速率和吞吐量；
SRB1在复制后能够在所述第一路径和所述第二路径上同时传输，这样通过多路径传输能够提高数据传输的可靠性，并且能够提高数据传输的速率和吞吐量；
数据无线承载DRB的不同部分能够在所述第一路径和所述第二路径上同时传输，比如DRB的第一部分在第一路径上传输，DRB的第二部分在第二路径上传输，这样通过多路径传输能够提高数据传输的可靠性，并且能够提高数据传输的速率和吞吐量；
DRB在复制后能够在所述第一路径和所述第二路径上同时传输，这样通过多路径传输能够提高数据传输的可靠性，并且能够提高数据传输的速率和吞吐量。
一些实施例中，所述规则还包括：
所述第一终端和所述第二终端处于同一基站场景(intra-gNB场景)下，不允许传输SRB3和分离SRB3，即从终端侧角度，UE不会收到基站配置的SRB3和split SRB3；从网络侧角度，基站不支持SRB3和split SRB3的配置。
一具体示例中，可以由协议约定所有消息的传输路径，比如在indirect path发送RRCSetupRequest消息和RRCSetupComplete消息(发送功率小，路径短),在direct path接收RRCSetup消息。
另一具体示例中，可以由网络侧设备和协议约定共同指示所有消息的传输路径，比如协议约定SRB0的传输路径，在indirect path发送RRCSetupRequest消息和接收RRCSetup消息，随后通过RRCSetup消息里携带的指示确定SRB1走direct path还是indirect path。SRB2和/或DRB的传输规则可以默认遵循SRB1的传输规则，也可以通过RRC Reconfiguration消息进一步灵活指示SRB2和/或DRB的传输规则。
步骤b4、所述第一终端向所述网络侧设备发送多路径配置完成消息(aggregation complete)。
其中，可以利用已有的消息携带多路径配置完成消息，也可以新定义一条多路径配置完成消息。已有的消息包括RRC重配置完成(reconfiguration complete)消息。
一些实施例中，在第二路径建立不成功的情况下，第一终端向网络侧设备发送多路径添加失败消息。
本申请实施例提供的数据传输方法，执行主体可以为数据传输装置。本申请实施例中以数据传输装置执行数据传输方法为例，说明本申请实施例提供的数据传输装置。
本申请实施例提供一种数据传输装置，如图7所示，应用于第一终端300，包括：
第一传输模块310，用于通过多个路径与网络侧设备传输用户面数据和/或控制面数据；
其中，所述多个路径至少包括第一路径和第二路径，所述第一路径为所述第一终端与所述网络侧设备直接通信的直连路径，所述第二路径为所述第一终端通过第二终端与所述网络侧设备通信的非直连路径；或
所述第一路径为所述第一终端通过所述第二终端与所述网络侧设备通信的非直连路径，所述第二路径为所述第一终端与所述网络侧设备直接通信的直连路径。
在本申请实施例中，第一终端与网络侧设备之间可以建立多路径连接，第一终端与网络侧设备之间可以通过多个路径传输不同的信令和业务数据，能够提高通信传输的吞吐量，并且在其中一条路径的链路质量较差时，可以利用其它链路质量较好的路径保证传输的可靠性。
一些实施例中，第一传输模块310，用于通过所述第一路径与所述网络侧设备通信；
在满足路径添加条件的情况下，通过已有的第一路径向所述网络侧设备发送多路径添加请求消息，请求添加所述第二路径。
一些实施例中，在所述第一路径为所述第一终端与所述网络侧设备直接通信的直连路径，所述第二路径为所述第一终端通过所述第二终端与所述网络侧设备通信的非直连路径的情况下，所述路径添加条件包括以下至少一项：
所述第一终端的数据缓存的大小大于或等于第一阈值；
所述第一终端的业务可靠性要求大于或等于第二阈值；
所述第一终端的上层指示所述第一终端的业务通过所述第二路径传输或通过所述第一路径和所述第二路径传输；
接收到所述网络侧设备的第一寻呼指示；
接收到所述网络侧设备的第二指示，所述第二指示用以指示所述网络侧设备支持多路径功能；
存在至少一个候选终端的链路质量满足预设的通信条件。
其中，所述至少一个候选终端包括所述第二终端。
一些实施例中，至少一个候选终端的链路质量满足预设的通信条件包括以下至少一项：
所述候选终端与所述第一终端之间的信号质量满足预设的通信条件；
所述候选终端的服务小区的信号质量满足预设的通信条件。
一些实施例中，所述多路径添加请求消息还包括第一信息，所述第一信息包括以下至少一项：
所述第一终端与所述候选终端之间的信号质量；
所述候选终端的标识信息；
所述候选终端的服务小区标识信息；
所述候选终端的服务小区的信号质量。
一些实施例中，第一传输模块310，用于接收所述网络侧设备返回的多路径添加配置消息；向所述网络侧设备发送多路径添加完成消息；
或者，
所述第一终端接收所述网络侧设备返回的多路径添加配置消息；
所述第一终端向所述网络侧设备发送多路径添加失败消息。
一些实施例中，在所述第一路径为所述第一终端与所述网络侧设备直接通信的直连路径，所述第二路径为所述第一终端通过所述第二终端与所述网络侧设备通信的非直连路径的情况下，所述多路径添加配置消息包括以下至少一项：
所述第二终端的标识信息；
所述第二终端的服务小区标识信息；
第一指示信息，用于指示进行路径切换操作或路径添加操作；
通过所述第一路径和所述第二路径进行控制面数据传输的规则；
通过所述第一路径和所述第二路径进行用户面数据传输的规则。
一些实施例中，在所述第一路径为所述第一终端通过所述第二终端与所述网络侧设备通信的非直连路径，所述第二路径为所述第一终端与所述网络侧设备直接通信的直连路径的情况下，所述路径添加条件包括以下至少一项：
所述第一终端的数据缓存的大小大于或等于第一阈值；
所述第一终端的业务可靠性要求大于或等于第二阈值；
所述第一终端的上层指示所述第一终端的业务通过所述第二路径传输或通过所述第一路径和所述第二路径传输；
接收到所述网络侧设备的第一寻呼指示；
接收到所述网络侧设备的第二指示，所述第二指示用以指示所述网络侧设备支持多路径功能；
存在至少一个候选小区满足预设的通信条件。
其中，所述至少一个候选小区包括所述第一终端在所述直连路径的小区。
一些实施例中，所述多路径添加请求消息还包括第一信息，所述第一信息包括以下至少一项：
所述候选小区的小区标识信息；
所述第一终端的所述候选小区的信号质量。
一些实施例中，在所述第一路径为所述第一终端通过所述第二终端与所述网络侧设备通信的非直连路径，所述第二路径为所述第一终端与所述网络侧设备直接通信的直连路径的情况下，所述多路径添加配置消息包括以下至少一项：
所述直连路径的小区标识信息；
第一指示信息，用于指示进行路径切换操作或路径添加操作；
通过所述第一路径和所述第二路径进行控制面数据传输的规则；
通过所述第一路径和所述第二路径进行用户面数据传输的规则。
一些实施例中，通过所述第一路径和所述第二路径进行用户面数据和/或控制面数据传输的规则为协议约定的。
一些实施例中，第一传输模块310，用于接收所述网络侧设备的路径配置信息，所述路径配置信息包括通过所述第一路径和所述第二路径进行用户面数据和/或控制面数据传输的规则。
一些实施例中，所述规则包括以下至少一项：
通过所述第一路径和所述第二路径传输信令的规则；
通过所述第一路径和所述第二路径传输上行数据和/或下行数据的规则；
信令无线承载SRB1的不同部分能够在所述第一路径和所述第二路径上同时传输；
SRB1在复制后能够在所述第一路径和所述第二路径上同时传输；
数据无线承载DRB的不同部分能够在所述第一路径和所述第二路径上同时传输；
DRB在复制后能够在所述第一路径和所述第二路径上同时传输。
一些实施例中，所述规则还包括：
所述第一终端和所述第二终端处于同一基站场景(intra-gNB场景)下，不允许传输SRB3和分离SRB3，即从终端侧角度，UE不会收到基站配置的SRB3和分离(split)SRB3；从网络侧角度，基站不支持SRB3和split SRB3的配置。
一些实施例中，第一传输模块310，用于接收所述网络侧设备的第一寻呼指示，所述第一寻呼指示用于指示所述第一终端的数据传输方式，所述第一寻呼指示包括以下至少一项：
指示所述第一终端与网络侧设备之间建立单路径或多路径；
在指示所述第一终端建立单路径的情况下，指示建立的路径为直连路径或非直连路径；
在指示所述第一终端建立多路径的情况下，指示通过已有的直连数据触发非直连路径添加流程或通过已有的非直连数据触发直连路径添加流程或同时建立直连路径和非直连路径。
本申请实施例中的数据传输装置可以是电子设备，例如具有操作系统的电子设备，也可以是电子设备中的部件，例如集成电路或芯片。该电子设备可以是终端，也可以为除终端之外的其他设备。示例性的，终端可以包括但不限于上述所列举的终端11的类型，其他设备可以为服务器、网络附属存储器(Network Attached Storage，NAS)等，本申请实施例不作具体限定。
本申请实施例提供的数据传输装置能够实现图5的方法实施例实现的各个过程，并达到相同的技术效果，为避免重复，这里不再赘述。
本申请实施例提供一种数据传输装置，如图8所示，应用于网络侧设备400，包括：
第二传输模块410，用于通过多个路径与第一终端传输用户面数据和/或控制面数据；
其中，所述多个路径至少包括第一路径和第二路径，所述第一路径为所述第一终端与所述网络侧设备直接通信的直连路径，所述第二路径为所述第一终端通过第二终端与所述网络侧设备通信的非直连路径；或
所述第一路径为所述第一终端通过所述第二终端与所述网络侧设备通信的非直连路径，所述第二路径为所述第一终端与所述网络侧设备直接通信的直连路径。
在本申请实施例中，第一终端与网络侧设备之间可以建立多路径连接，第一终端与网络侧设备之间可以通过多个路径传输不同的信令和业务数据，能够提高通信传输的吞吐量，并且在其中一条路径的链路质量较差时，可以 利用其它链路质量较好的路径保证传输的可靠性。
一些实施例中，第二传输模块410用于通过所述第一路径与所述第一终端通信；接收所述第一终端通过已有的第一路径发送的多路径添加请求消息，请求添加所述第二路径，所述多路径添加请求消息为所述第一终端判断满足路径添加条件后发送。
一些实施例中，在所述第一路径为所述第一终端与所述网络侧设备直接通信的直连路径，所述第二路径为所述第一终端通过所述第二终端与所述网络侧设备通信的非直连路径的情况下，所述多路径添加请求消息还包括第一信息，所述第一信息包括以下至少一项：
所述第一终端与候选终端之间的信号质量；
所述候选终端的标识信息；
所述候选终端的服务小区标识信息；
所述候选终端的服务小区的信号质量；
其中，所述候选终端包括所述第二终端。
一些实施例中，第二传输模块410用于向所述第一终端发送多路径添加配置消息；接收所述第一终端发送的多路径添加完成消息；或者，接收所述第一终端发送的多路径添加失败消息。
一些实施例中，在所述第一路径为所述第一终端与所述网络侧设备直接通信的直连路径，所述第二路径为所述第一终端通过所述第二终端与所述网络侧设备通信的非直连路径的情况下，所述多路径添加配置消息包括以下至少一项：
所述第二终端的标识信息；
所述第二终端的服务小区标识信息；
第一指示信息，用于指示进行路径切换操作或路径添加操作；
通过所述第一路径和所述第二路径进行控制面数据传输的规则；
通过所述第一路径和所述第二路径进行用户面数据传输的规则。
一些实施例中，在所述第一路径为所述第一终端通过所述第二终端与所述网络侧设备通信的非直连路径，所述第二路径为所述第一终端与所述网络侧设备直接通信的直连路径的情况下，所述多路径添加请求消息还包括第一 信息，所述第一信息包括以下至少一项：
候选小区的小区标识信息；
所述第一终端的所述候选小区的信号质量；
其中，所述候选小区包括所述第一终端在所述直连路径的小区。
一些实施例中，在所述第一路径为所述第一终端通过所述第二终端与所述网络侧设备通信的非直连路径，所述第二路径为所述第一终端与所述网络侧设备直接通信的直连路径的情况下，所述多路径添加配置消息包括以下至少一项：
所述直连路径的小区标识信息；
第一指示信息，用于指示进行路径切换操作或路径添加操作；
通过所述第一路径和所述第二路径进行控制面数据传输的规则
通过所述第一路径和所述第二路径进行用户面数据传输的规则。
一些实施例中，通过所述第一路径和所述第二路径进行用户面数据和/或控制面数据传输的规则为协议约定的。
一些实施例中，第二传输模块410用于向所述第一终端发送路径配置信息，所述路径配置信息包括通过所述第一路径和所述第二路径进行用户面数据和/或控制面数据传输的规则。
一些实施例中，所述规则包括以下至少一项：
通过所述第一路径和所述第二路径传输信令的规则；
通过所述第一路径和所述第二路径传输上行数据和/或下行数据的规则；
信令无线承载SRB1的不同部分能够在所述第一路径和所述第二路径上同时传输；
SRB1在复制后能够在所述第一路径和所述第二路径上同时传输；
数据无线承载DRB的不同部分能够在所述第一路径和所述第二路径上同时传输；
DRB在复制后能够在所述第一路径和所述第二路径上同时传输。
一些实施例中，所述规则还包括：
所述第一终端和所述第二终端处于同一基站场景(intra-gNB场景)下，不允许传输SRB3和分离SRB3，即从终端侧角度，UE不会收到基站配置的 SRB3和split SRB3；从网络侧角度，基站不支持SRB3和split SRB3的配置。
一些实施例中，第二传输模块410用于向所述第一终端发送第一寻呼指示，所述第一寻呼指示用于指示所述第一终端的数据传输方式，所述第一寻呼指示包括以下至少一项：
指示所述第一终端与网络侧设备之间建立单路径或多路径；
在指示所述第一终端建立单路径的情况下，指示建立的路径为直连路径或非直连路径；
在指示所述第一终端建立多路径的情况下，指示通过已有的直连数据触发非直连路径添加流程或通过已有的非直连数据触发直连路径添加流程或同时建立直连路径和非直连路径。
本申请实施例提供的数据传输装置能够实现图6的方法实施例实现的各个过程，并达到相同的技术效果，为避免重复，这里不再赘述。
可选的，如图9所示，本申请实施例还提供一种通信设备600，包括处理器601和存储器602，存储器602上存储有可在所述处理器601上运行的程序或指令，例如，该通信设备600为网络侧设备时，该程序或指令被处理器601执行时实现上述数据传输方法实施例的各个步骤，且能达到相同的技术效果。该通信设备600为终端时，该程序或指令被处理器601执行时实现上述数据传输方法实施例的各个步骤，且能达到相同的技术效果，为避免重复，这里不再赘述。
本申请实施例还提供了一种网络侧设备，该网络侧设备包括处理器和存储器，所述存储器存储可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如上所述的数据传输方法的步骤。
本申请实施例还提供了一种网络侧设备，包括处理器及通信接口，其中，所述通信接口用于通过多个路径与第一终端传输用户面数据和/或控制面数据；
其中，所述多个路径至少包括第一路径和第二路径，所述第一路径为所述第一终端与所述网络侧设备直接通信的直连路径，所述第二路径为所述第一终端通过第二终端与所述网络侧设备通信的非直连路径；或
所述第一路径为所述第一终端通过所述第二终端与所述网络侧设备通信 的非直连路径，所述第二路径为所述第一终端与所述网络侧设备直接通信的直连路径。
本申请实施例还提供了一种终端，该终端包括处理器和存储器，所述存储器存储可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如上所述的数据传输方法的步骤。
本申请实施例还提供了一种终端，包括处理器及通信接口，其中，所述通信接口用于通过多个路径与网络侧设备传输用户面数据和/或控制面数据；
其中，所述多个路径至少包括第一路径和第二路径，所述第一路径为所述第一终端与所述网络侧设备直接通信的直连路径，所述第二路径为所述第一终端通过第二终端与所述网络侧设备通信的非直连路径；或
所述第一路径为所述第一终端通过所述第二终端与所述网络侧设备通信的非直连路径，所述第二路径为所述第一终端与所述网络侧设备直接通信的直连路径。
本申请实施例还提供一种终端，包括处理器和通信接口，该终端实施例与上述终端侧方法实施例对应，上述方法实施例的各个实施过程和实现方式均可适用于该终端实施例中，且能达到相同的技术效果。具体地，图10为实现本申请实施例的一种终端的硬件结构示意图。
该终端700包括但不限于：射频单元701、网络模块702、音频输出单元703、输入单元704、传感器705、显示单元706、用户输入单元707、接口单元708、存储器709以及处理器710等中的至少部分部件。
本领域技术人员可以理解，终端700还可以包括给各个部件供电的电源(比如电池)，电源可以通过电源管理系统与处理器710逻辑相连，从而通过电源管理系统实现管理充电、放电、以及功耗管理等功能。图10中示出的终端结构并不构成对终端的限定，终端可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件布置，在此不再赘述。
应理解的是，本申请实施例中，输入单元704可以包括图形处理单元(Graphics Processing Unit，GPU)7041和麦克风7042，图形处理器7041对在视频捕获模式或图像捕获模式中由图像捕获装置(如摄像头)获得的静态图片或视频的图像数据进行处理。显示单元706可包括显示面板7061，可以 采用液晶显示器、有机发光二极管等形式来配置显示面板7061。用户输入单元707包括触控面板7071以及其他输入设备7072中的至少一种。触控面板7071，也称为触摸屏。触控面板7071可包括触摸检测装置和触摸控制器两个部分。其他输入设备7072可以包括但不限于物理键盘、功能键(比如音量控制按键、开关按键等)、轨迹球、鼠标、操作杆，在此不再赘述。
本申请实施例中，射频单元701接收来自网络侧设备的下行数据后，可以传输给处理器710进行处理；另外，射频单元701可以向网络侧设备发送上行数据。通常，射频单元701包括但不限于天线、放大器、收发信机、耦合器、低噪声放大器、双工器等。
存储器709可用于存储软件程序或指令以及各种数据。存储器709可主要包括存储程序或指令的第一存储区和存储数据的第二存储区，其中，第一存储区可存储操作系统、至少一个功能所需的应用程序或指令(比如声音播放功能、图像播放功能等)等。此外，存储器709可以包括易失性存储器或非易失性存储器，或者，存储器709可以包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(Read-Only Memory，ROM)、可编程只读存储器(Programmable ROM，PROM)、可擦除可编程只读存储器(Erasable PROM，EPROM)、电可擦除可编程只读存储器(Electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory，RAM)，静态随机存取存储器(Static RAM，SRAM)、动态随机存取存储器(Dynamic RAM，DRAM)、同步动态随机存取存储器(Synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM，DDRSDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(Synch link DRAM，SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM，DRRAM)。本申请实施例中的存储器709包括但不限于这些和任意其它适合类型的存储器。
处理器710可包括一个或多个处理单元；可选的，处理器710集成应用处理器和调制解调处理器，其中，应用处理器主要处理涉及操作系统、用户界面和应用程序等的操作，调制解调处理器主要处理无线通信信号，如基带处理器。可以理解的是，上述调制解调处理器也可以不集成到处理器710中。
一些实施例中，处理器710，用于通过多个路径与网络侧设备传输用户面数据和/或控制面数据；
其中，所述多个路径至少包括第一路径和第二路径，所述第一路径为所述第一终端与所述网络侧设备直接通信的直连路径，所述第二路径为所述第一终端通过第二终端与所述网络侧设备通信的非直连路径；或
所述第一路径为所述第一终端通过所述第二终端与所述网络侧设备通信的非直连路径，所述第二路径为所述第一终端与所述网络侧设备直接通信的直连路径。
一些实施例中，处理器710，用于通过所述第一路径与所述网络侧设备通信；
在满足路径添加条件的情况下，通过已有的第一路径向所述网络侧设备发送多路径添加请求消息，请求添加所述第二路径。
一些实施例中，在所述第一路径为所述第一终端与所述网络侧设备直接通信的直连路径，所述第二路径为所述第一终端通过所述第二终端与所述网络侧设备通信的非直连路径的情况下，所述路径添加条件包括以下至少一项：
所述第一终端的数据缓存的大小大于或等于第一阈值；
所述第一终端的业务可靠性要求大于或等于第二阈值；
所述第一终端的上层指示所述第一终端的业务通过所述第二路径传输或通过所述第一路径和所述第二路径传输；
接收到所述网络侧设备的第一寻呼指示；
接收到所述网络侧设备的第二指示，所述第二指示用以指示所述网络侧设备支持多路径功能；
存在至少一个候选终端的链路质量满足预设的通信条件。
其中，所述至少一个候选终端包括所述第二终端。
一些实施例中，至少一个候选终端的链路质量满足预设的通信条件包括以下至少一项：
所述候选终端与所述第一终端之间的信号质量满足预设的通信条件；
所述候选终端的服务小区的信号质量满足预设的通信条件。
一些实施例中，所述多路径添加请求消息还包括第一信息，所述第一信 息包括以下至少一项：
所述第一终端与所述候选终端之间的信号质量；
所述候选终端的标识信息；
所述候选终端的服务小区标识信息；
所述候选终端的服务小区的信号质量。
一些实施例中，处理器710，用于接收所述网络侧设备返回的多路径添加配置消息；向所述网络侧设备发送多路径添加完成消息，或者，向所述网络侧设备发送多路径添加失败消息。
一些实施例中，在所述第一路径为所述第一终端与所述网络侧设备直接通信的直连路径，所述第二路径为所述第一终端通过所述第二终端与所述网络侧设备通信的非直连路径的情况下，所述多路径添加配置消息包括以下至少一项：
所述第二终端的标识信息；
所述第二终端的服务小区标识信息；
第一指示信息，用于指示进行路径切换操作或路径添加操作；
通过所述第一路径和所述第二路径进行控制面数据传输的规则；
通过所述第一路径和所述第二路径进行用户面数据传输的规则。
一些实施例中，在所述第一路径为所述第一终端通过所述第二终端与所述网络侧设备通信的非直连路径，所述第二路径为所述第一终端与所述网络侧设备直接通信的直连路径的情况下，所述路径添加条件包括以下至少一项：
所述第一终端的数据缓存的大小大于或等于第一阈值；
所述第一终端的业务可靠性要求大于或等于第二阈值；
所述第一终端的上层指示所述第一终端的业务通过所述第二路径传输或通过所述第一路径和所述第二路径传输；
接收到所述网络侧设备的第一寻呼指示；
接收到所述网络侧设备的第二指示，所述第二指示用以指示所述网络侧设备支持多路径功能；
存在至少一个候选小区满足预设的通信条件。
其中，所述至少一个候选小区包括所述第一终端在所述直连路径的小区。
一些实施例中，所述多路径添加请求消息还包括第一信息，所述第一信息包括以下至少一项：
所述候选小区的小区标识信息；
所述第一终端的所述候选小区的信号质量。
一些实施例中，在所述第一路径为所述第一终端通过所述第二终端与所述网络侧设备通信的非直连路径，所述第二路径为所述第一终端与所述网络侧设备直接通信的直连路径的情况下，所述多路径添加配置消息包括以下至少一项：
所述直连路径的小区标识信息；
第一指示信息，用于指示进行路径切换操作或路径添加操作；
通过所述第一路径和所述第二路径进行控制面数据传输的规则；
通过所述第一路径和所述第二路径进行用户面数据传输的规则。
一些实施例中，通过所述第一路径和所述第二路径进行用户面数据和/或控制面数据传输的规则为协议约定的。
一些实施例中，处理器710，用于接收所述网络侧设备的路径配置信息，所述路径配置信息包括通过所述第一路径和所述第二路径进行用户面数据和/或控制面数据传输的规则。
一些实施例中，所述规则包括以下至少一项：
通过所述第一路径和所述第二路径传输信令的规则；
通过所述第一路径和所述第二路径传输上行数据和/或下行数据的规则；
信令无线承载SRB1的不同部分能够在所述第一路径和所述第二路径上同时传输；
SRB1在复制后能够在所述第一路径和所述第二路径上同时传输；
数据无线承载DRB的不同部分能够在所述第一路径和所述第二路径上同时传输；
DRB在复制后能够在所述第一路径和所述第二路径上同时传输。
一些实施例中，所述规则还包括：
所述第一终端和所述第二终端处于同一基站场景(intra-gNB场景)下，不允许传输SRB3和分离SRB3，即从终端侧角度，UE不会收到基站配置的 SRB3和split SRB3；从网络侧角度，基站不支持SRB3和split SRB3的配置。
一些实施例中，处理器710，用于接收所述网络侧设备的第一寻呼指示，所述第一寻呼指示用于指示所述第一终端的数据传输方式，所述第一寻呼指示包括以下至少一项：
指示所述第一终端与网络侧设备之间建立单路径或多路径；
在指示所述第一终端建立单路径的情况下，指示建立的路径为直连路径或非直连路径；
在指示所述第一终端建立多路径的情况下，指示通过已有的直连数据触发非直连路径添加流程或通过已有的非直连数据触发直连路径添加流程或同时建立直连路径和非直连路径。
本申请实施例还提供一种网络侧设备，包括处理器和通信接口。该网络侧设备实施例与上述网络侧设备方法实施例对应，上述方法实施例的各个实施过程和实现方式均可适用于该网络侧设备实施例中，且能达到相同的技术效果。
具体地，本申请实施例还提供了一种网络侧设备。如图11所示，该网络侧设备800包括：天线81、射频装置82、基带装置83、处理器84和存储器85。天线81与射频装置82连接。在上行方向上，射频装置82通过天线81接收信息，将接收的信息发送给基带装置83进行处理。在下行方向上，基带装置83对要发送的信息进行处理，并发送给射频装置82，射频装置82对收到的信息进行处理后经过天线81发送出去。
以上实施例中网络侧设备执行的方法可以在基带装置83中实现，该基带装置83包括基带处理器。
基带装置83例如可以包括至少一个基带板，该基带板上设置有多个芯片，如图11所示，其中一个芯片例如为基带处理器，通过总线接口与存储器85连接，以调用存储器85中的程序，执行以上方法实施例中所示的网络设备操作。
该网络侧设备还可以包括网络接口86，该接口例如为通用公共无线接口(common public radio interface，CPRI)。
具体地，本发明实施例的网络侧设备800还包括：存储在存储器85上并 可在处理器84上运行的指令或程序，处理器84调用存储器85中的指令或程序执行如上所述的数据传输方法，并达到相同的技术效果，为避免重复，故不在此赘述。
本申请实施例还提供一种可读存储介质，所述可读存储介质上存储有程序或指令，该程序或指令被处理器执行时实现上述数据传输方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
其中，所述处理器为上述实施例中所述的终端中的处理器。所述可读存储介质，包括计算机可读存储介质，如计算机只读存储器ROM、随机存取存储器RAM、磁碟或者光盘等。
本申请实施例另提供了一种芯片，所述芯片包括处理器和通信接口，所述通信接口和所述处理器耦合，所述处理器用于运行程序或指令，实现上述数据传输方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
应理解，本申请实施例提到的芯片还可以称为系统级芯片，系统芯片，芯片系统或片上系统芯片等。
本申请实施例另提供了一种计算机程序/程序产品，所述计算机程序/程序产品被存储在存储介质中，所述计算机程序/程序产品被至少一个处理器执行以实现上述数据传输方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
本申请实施例还提供了一种数据传输系统，包括：网络侧设备及终端，所述网络侧设备可用于执行如上所述的数据传输方法的步骤，所述终端可用于执行如上所述的数据传输方法的步骤。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本公开的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应 过程，在此不再赘述。
在本申请所提供的实施例中，应该理解到，所揭露的装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本公开各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本公开的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本公开各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程，是可以通过计算机程序来控制相关的硬件来完成，所述的程序可存储于一计算机可读取存储介质中，该程序在执行时，可包括如上述各方法的实施例的流程。其中，所述的存储介质可为磁碟、光盘、只读存储记忆体(Read-Only Memory，ROM)或随机存储记忆体(Random Access Memory，RAM)等。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体 意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。此外，需要指出的是，本申请实施方式中的方法和装置的范围不限按示出或讨论的顺序来执行功能，还可包括根据所涉及的功能按基本同时的方式或按相反的顺序来执行功能，例如，可以按不同于所描述的次序来执行所描述的方法，并且还可以添加、省去、或组合各种步骤。另外，参照某些示例所描述的特征可在其他示例中被组合。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分可以以计算机软件产品的形式体现出来，该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端(可以是手机，计算机，服务器，空调器，或者网络设备等)执行本申请各个实施例所述的方法。
上面结合附图对本申请的实施例进行了描述，但是本申请并不局限于上述的具体实施方式，上述的具体实施方式仅仅是示意性的，而不是限制性的，本领域的普通技术人员在本申请的启示下，在不脱离本申请宗旨和权利要求所保护的范围情况下，还可做出很多形式，均属于本申请的保护之内。

Claims (33)

  1. 一种数据传输方法，包括：
    第一终端通过多个路径与网络侧设备传输用户面数据和/或控制面数据；
    其中，所述多个路径至少包括第一路径和第二路径，所述第一路径为所述第一终端与所述网络侧设备直接通信的直连路径，所述第二路径为所述第一终端通过第二终端与所述网络侧设备通信的非直连路径；或
    所述第一路径为所述第一终端通过所述第二终端与所述网络侧设备通信的非直连路径，所述第二路径为所述第一终端与所述网络侧设备直接通信的直连路径。
  2. 根据权利要求1所述的数据传输方法，其中，所述第一终端通过多个路径与网络侧设备传输用户面数据和/或控制面数据之前，所述方法包括：
    所述第一终端通过所述第一路径与所述网络侧设备通信；
    在满足路径添加条件的情况下，所述第一终端通过已有的第一路径向所述网络侧设备发送多路径添加请求消息，请求添加所述第二路径。
  3. 根据权利要求2所述的数据传输方法，其中，在所述第一路径为所述第一终端与所述网络侧设备直接通信的直连路径，所述第二路径为所述第一终端通过所述第二终端与所述网络侧设备通信的非直连路径的情况下，所述路径添加条件包括以下至少一项：
    所述第一终端的数据缓存的大小大于或等于第一阈值；
    所述第一终端的业务可靠性要求大于或等于第二阈值；
    所述第一终端的上层指示所述第一终端的业务通过所述第二路径传输或通过所述第一路径和所述第二路径传输；
    接收到所述网络侧设备的第一寻呼指示；
    接收到所述网络侧设备的第二指示，所述第二指示用以指示所述网络侧设备支持多路径功能；
    存在至少一个候选终端的链路质量满足预设的通信条件；
    其中，所述至少一个候选终端包括所述第二终端。
  4. 根据权利要求3所述的数据传输方法，其中，至少一个候选终端的链 路质量满足预设的通信条件包括以下至少一项：
    所述候选终端与所述第一终端之间的信号质量满足预设的通信条件；
    所述候选终端的服务小区的信号质量满足预设的通信条件。
  5. 根据权利要求3所述的数据传输方法，其中，所述多路径添加请求消息还包括第一信息，所述第一信息包括以下至少一项：
    所述第一终端与所述候选终端之间的信号质量；
    所述候选终端的标识信息；
    所述候选终端的服务小区标识信息；
    所述候选终端的服务小区的信号质量。
  6. 根据权利要求2所述的数据传输方法，其中，所述第一终端通过多个路径与网络侧设备传输用户面数据和/或控制面数据之前，所述方法还包括：
    所述第一终端接收所述网络侧设备返回的多路径添加配置消息；
    所述第一终端向所述网络侧设备发送多路径添加完成消息；
    或者，
    所述第一终端接收所述网络侧设备返回的多路径添加配置消息；
    所述第一终端向所述网络侧设备发送多路径添加失败消息。
  7. 根据权利要求6所述的数据传输方法，其中，在所述第一路径为所述第一终端与所述网络侧设备直接通信的直连路径，所述第二路径为所述第一终端通过所述第二终端与所述网络侧设备通信的非直连路径的情况下，所述多路径添加配置消息包括以下至少一项：
    所述第二终端的标识信息；
    所述第二终端的服务小区标识信息；
    第一指示信息，用于指示进行路径切换操作或路径添加操作；
    通过所述第一路径和所述第二路径进行控制面数据传输的规则；
    通过所述第一路径和所述第二路径进行用户面数据传输的规则。
  8. 根据权利要求2所述的数据传输方法，其中，在所述第一路径为所述第一终端通过所述第二终端与所述网络侧设备通信的非直连路径，所述第二路径为所述第一终端与所述网络侧设备直接通信的直连路径的情况下，所述路径添加条件包括以下至少一项：
    所述第一终端的数据缓存的大小大于或等于第一阈值；
    所述第一终端的业务可靠性要求大于或等于第二阈值；
    所述第一终端的上层指示所述第一终端的业务通过所述第二路径传输或通过所述第一路径和所述第二路径传输；
    接收到所述网络侧设备的第一寻呼指示；
    接收到所述网络侧设备的第二指示，所述第二指示用以指示所述网络侧设备支持多路径功能；
    存在至少一个候选小区满足预设的通信条件；
    其中，所述至少一个候选小区包括所述第一终端在所述直连路径的小区。
  9. 根据权利要求8所述的数据传输方法，其中，所述多路径添加请求消息还包括第一信息，所述第一信息包括以下至少一项：
    所述候选小区的小区标识信息；
    所述第一终端的所述候选小区的信号质量。
  10. 根据权利要求6所述的数据传输方法，其中，在所述第一路径为所述第一终端通过所述第二终端与所述网络侧设备通信的非直连路径，所述第二路径为所述第一终端与所述网络侧设备直接通信的直连路径的情况下，所述多路径添加配置消息包括以下至少一项：
    所述直连路径的小区标识信息；
    第一指示信息，用于指示进行路径切换操作或路径添加操作；
    通过所述第一路径和所述第二路径进行控制面数据传输的规则；
    通过所述第一路径和所述第二路径进行用户面数据传输的规则。
  11. 根据权利要求7或10所述的数据传输方法，其中，通过所述第一路径和所述第二路径进行用户面数据和/或控制面数据传输的规则为协议约定的。
  12. 根据权利要求7或10所述的数据传输方法，其中，所述方法还包括：
    所述第一终端接收所述网络侧设备的路径配置信息，所述路径配置信息包括通过所述第一路径和所述第二路径进行用户面数据和/或控制面数据传输的规则。
  13. 根据权利要求7或10所述的数据传输方法，其中，所述规则包括以 下至少一项：
    通过所述第一路径和所述第二路径传输信令的规则；
    通过所述第一路径和所述第二路径传输上行数据和/或下行数据的规则；
    信令无线承载SRB1的不同部分能够在所述第一路径和所述第二路径上同时传输；
    SRB1在复制后能够在所述第一路径和所述第二路径上同时传输；
    数据无线承载DRB的不同部分能够在所述第一路径和所述第二路径上同时传输；
    DRB在复制后能够在所述第一路径和所述第二路径上同时传输。
  14. 根据权利要求13所述的数据传输方法，其中，所述规则还包括：
    所述第一终端和所述第二终端处于同一基站的场景下，不允许传输SRB3和分离SRB3。
  15. 根据权利要求1所述的数据传输方法，其中，所述第一终端通过多个路径与网络侧设备传输用户面数据和/或控制面数据之前，所述方法还包括：
    所述第一终端接收所述网络侧设备的第一寻呼指示，所述第一寻呼指示指示所述第一终端的数据传输方式，所述第一寻呼指示包括以下至少一项：
    指示所述第一终端与网络侧设备之间建立单路径或多路径；
    在指示所述第一终端建立单路径的情况下，指示建立的路径为直连路径或非直连路径；
    在指示所述第一终端建立多路径的情况下，指示通过已有的直连数据触发非直连路径添加流程或通过已有的非直连数据触发直连路径添加流程或同时建立直连路径和非直连路径。
  16. 一种数据传输方法，包括：
    网络侧设备通过多个路径与第一终端传输用户面数据和/或控制面数据；
    其中，所述多个路径至少包括第一路径和第二路径，所述第一路径为所述第一终端与所述网络侧设备直接通信的直连路径，所述第二路径为所述第一终端通过第二终端与所述网络侧设备通信的非直连路径；或
    所述第一路径为所述第一终端通过所述第二终端与所述网络侧设备通信的非直连路径，所述第二路径为所述第一终端与所述网络侧设备直接通信的 直连路径。
  17. 根据权利要求16所述的数据传输方法，其中，所述网络侧设备通过多个路径与第一终端传输用户面数据和/或控制面数据之前，所述方法包括：
    所述网络侧设备通过所述第一路径与所述第一终端通信；
    所述网络侧设备接收所述第一终端通过已有的第一路径发送的多路径添加请求消息，请求添加所述第二路径，所述多路径添加请求消息为所述第一终端判断满足路径添加条件后发送。
  18. 根据权利要求17所述的数据传输方法，其中，在所述第一路径为所述第一终端与所述网络侧设备直接通信的直连路径，所述第二路径为所述第一终端通过所述第二终端与所述网络侧设备通信的非直连路径的情况下，所述多路径添加请求消息还包括第一信息，所述第一信息包括以下至少一项：
    所述第一终端与候选终端之间的信号质量；
    所述候选终端的标识信息；
    所述候选终端的服务小区标识信息；
    所述候选终端的服务小区的信号质量；
    其中，所述候选终端包括所述第二终端。
  19. 根据权利要求17所述的数据传输方法，其中，所述网络侧设备通过多个路径与第一终端传输用户面数据和/或控制面数据之前，所述方法还包括：
    所述网络侧设备向所述第一终端发送多路径添加配置消息；
    所述网络侧设备接收所述第一终端发送的多路径添加完成消息；
    或者，
    所述网络侧设备向所述第一终端发送多路径添加配置消息；
    所述网络侧设备接收所述第一终端发送的多路径添加失败消息。
  20. 根据权利要求19所述的数据传输方法，其中，在所述第一路径为所述第一终端与所述网络侧设备直接通信的直连路径，所述第二路径为所述第一终端通过所述第二终端与所述网络侧设备通信的非直连路径的情况下，所述多路径添加配置消息包括以下至少一项：
    所述第二终端的标识信息；
    所述第二终端的服务小区标识信息；
    第一指示信息，用于指示进行路径切换操作或路径添加操作；
    通过所述第一路径和所述第二路径进行控制面数据传输的规则；
    通过所述第一路径和所述第二路径进行用户面数据传输的规则。
  21. 根据权利要求17所述的数据传输方法，其中，在所述第一路径为所述第一终端通过所述第二终端与所述网络侧设备通信的非直连路径，所述第二路径为所述第一终端与所述网络侧设备直接通信的直连路径的情况下，所述多路径添加请求消息还包括第一信息，所述第一信息包括以下至少一项：
    候选小区的小区标识信息；
    所述第一终端的所述候选小区的信号质量；
    其中，所述候选小区包括所述第一终端在所述直连路径的小区。
  22. 根据权利要求19所述的数据传输方法，其中，在所述第一路径为所述第一终端通过所述第二终端与所述网络侧设备通信的非直连路径，所述第二路径为所述第一终端与所述网络侧设备直接通信的直连路径的情况下，所述多路径添加配置消息包括以下至少一项：
    所述直连路径的小区标识信息；
    第一指示信息，用于指示进行路径切换操作或路径添加操作；
    通过所述第一路径和所述第二路径进行控制面数据传输的规则
    通过所述第一路径和所述第二路径进行用户面数据传输的规则。
  23. 根据权利要求20或22所述的数据传输方法，其中，通过所述第一路径和所述第二路径进行用户面数据和/或控制面数据传输的规则为协议约定的。
  24. 根据权利要求20或22所述的数据传输方法，其中，所述方法还包括：
    所述网络侧设备向所述第一终端发送路径配置信息，所述路径配置信息包括通过所述第一路径和所述第二路径进行用户面数据和/或控制面数据传输的规则。
  25. 根据权利要求20或22所述的数据传输方法，其中，所述规则包括以下至少一项：
    通过所述第一路径和所述第二路径传输信令的规则；
    通过所述第一路径和所述第二路径传输上行数据和/或下行数据的规则；
    信令无线承载SRB1的不同部分能够在所述第一路径和所述第二路径上同时传输；
    SRB1在复制后能够在所述第一路径和所述第二路径上同时传输；
    数据无线承载DRB的不同部分能够在所述第一路径和所述第二路径上同时传输；
    DRB在复制后能够在所述第一路径和所述第二路径上同时传输。
  26. 根据权利要求25所述的数据传输方法，其中，所述规则还包括：
    所述第一终端和所述第二终端处于同一基站场景下，不允许传输SRB3和分离SRB3。
  27. 根据权利要求16所述的数据传输方法，其中，所述网络侧设备通过多个路径与第一终端传输用户面数据和/或控制面数据之前，所述方法还包括：
    所述网络侧设备向所述第一终端发送第一寻呼指示，所述第一寻呼指示指示所述第一终端的数据传输方式，所述第一寻呼指示包括以下至少一项：
    指示所述第一终端与网络侧设备之间建立单路径或多路径；
    在指示所述第一终端建立单路径的情况下，指示建立的路径为直连路径或非直连路径；
    在指示所述第一终端建立多路径的情况下，指示通过已有的直连数据触发非直连路径添加流程或通过已有的非直连数据触发直连路径添加流程或同时建立直连路径和非直连路径。
  28. 根据权利要求16所述的数据传输方法，其中，所述网络侧设备通过多个路径与第一终端传输用户面数据和/或控制面数据之前，所述方法还包括：
    所述网络侧设备通过系统广播消息和/或无线资源控制RRC专用消息发送第二指示，所述第二指示用以指示所述网络侧设备支持多路径功能。
  29. 一种数据传输装置，包括：
    第一传输模块，用于通过多个路径与网络侧设备传输用户面数据和/或控制面数据；
    其中，所述多个路径至少包括第一路径和第二路径，所述第一路径为第一终端与所述网络侧设备直接通信的直连路径，所述第二路径为所述第一终 端通过第二终端与所述网络侧设备通信的非直连路径；或
    所述第一路径为所述第一终端通过所述第二终端与所述网络侧设备通信的非直连路径，所述第二路径为所述第一终端与所述网络侧设备直接通信的直连路径。
  30. 一种数据传输装置，包括：
    第二传输模块，用于通过多个路径与第一终端传输用户面数据和/或控制面数据；
    其中，所述多个路径至少包括第一路径和第二路径，所述第一路径为所述第一终端与网络侧设备直接通信的直连路径，所述第二路径为所述第一终端通过第二终端与所述网络侧设备通信的非直连路径；或
    所述第一路径为所述第一终端通过所述第二终端与所述网络侧设备通信的非直连路径，所述第二路径为所述第一终端与所述网络侧设备直接通信的直连路径。
  31. 一种终端，包括处理器和存储器，所述存储器存储可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如权利要求1至15任一项所述的数据传输方法的步骤。
  32. 一种网络侧设备，包括处理器和存储器，所述存储器存储可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如权利要求16至28任一项所述的数据传输方法的步骤。
  33. 一种可读存储介质，所述可读存储介质上存储程序或指令，所述程序或指令被处理器执行时实现如权利要求1-15任一项所述的数据传输方法，或者实现如权利要求16至28任一项所述的数据传输方法的步骤。
PCT/CN2023/083082 2022-03-24 2023-03-22 数据传输方法及装置、终端及网络侧设备 WO2023179668A1 (zh)

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US20180213577A1 (en) * 2015-07-23 2018-07-26 Intel IP Corporation Layer 2 relay protocols and mobility relay method
WO2019028811A1 (zh) * 2017-08-11 2019-02-14 华为技术有限公司 一种路径转换方法、相关装置及系统

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CN102474891A (zh) * 2009-08-13 2012-05-23 高通股份有限公司 异构通信系统中的链路聚合
JP2014526833A (ja) * 2011-09-09 2014-10-06 クゥアルコム・インコーポレイテッド 終端間多重パスネットワークシステムのためのフィードバックプロトコル
US20180213577A1 (en) * 2015-07-23 2018-07-26 Intel IP Corporation Layer 2 relay protocols and mobility relay method
WO2019028811A1 (zh) * 2017-08-11 2019-02-14 华为技术有限公司 一种路径转换方法、相关装置及系统

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