WO2023016402A1 - 数据传输方法、装置及终端、网络侧设备 - Google Patents

数据传输方法、装置及终端、网络侧设备 Download PDF

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Publication number
WO2023016402A1
WO2023016402A1 PCT/CN2022/110856 CN2022110856W WO2023016402A1 WO 2023016402 A1 WO2023016402 A1 WO 2023016402A1 CN 2022110856 W CN2022110856 W CN 2022110856W WO 2023016402 A1 WO2023016402 A1 WO 2023016402A1
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transmission
data
rlc
indication information
rlc sdu
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French (fr)
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鲍炜
陈力
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Vivo Mobile Communication Co Ltd
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Vivo Mobile Communication Co Ltd
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    • 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
    • H04W28/12—Flow control between communication endpoints using signalling between network elements

Definitions

  • the present application relates to the technical field of communications, and in particular to a data transmission method, device, terminal, and network side equipment.
  • Extended reality refers to all real and virtual combined environments and human-computer interactions generated by computer technology and wearable devices. It includes representative forms such as augmented reality (Augmented Reality, AR), mixed reality (Mixed Reality, MR), virtual reality (Virtual Reality, VR), and the interpolation area between them. The levels of virtual worlds range from partial sensory input to fully immersive virtual reality.
  • AR Augmented Reality
  • MR Mixed reality
  • VR Virtual Reality
  • AR Virtual Reality
  • XR service transmission is mapped to the same service flow, without distinguishing between control information and special data with control functions, resulting in excessive transmission delay of uplink control information and special data, and the network cannot obtain the terminal (User Equipment , UE) control information and affect the XR service experience.
  • terminal User Equipment , UE
  • Embodiments of the present application provide a data transmission method, device, terminal, and network-side equipment, which can prevent the XR service from being stuck and ensure the user's XR service experience.
  • the embodiment of the present application provides a data transmission method, which is executed by a terminal, and the method includes:
  • the data packets to be transmitted are data packets to be transmitted in the logical channel
  • the MAC entity multiplexes the data packets to be transmitted into transmission resources according to the priority transmission sequence
  • the embodiment of the present application provides a data transmission method, executed by a network side device, including:
  • the embodiment of the present application provides a data transmission device, which is applied to a terminal, and the device includes:
  • a processing module configured to determine a priority transmission order of data packets to be transmitted according to the first indication information, the data packets to be transmitted are data packets to be transmitted in a logical channel;
  • a multiplexing module configured to multiplex the data packets to be transmitted into transmission resources according to the priority transmission sequence
  • a transmission module configured to transmit the data packet to be transmitted.
  • the embodiment of the present application provides a data transmission device, which is applied to a network side device, and the device includes:
  • a determining module configured to determine a logical channel corresponding to the terminal
  • a sending module configured to send first indication information for the logical channel to the terminal, where the first indication information is used to indicate to the terminal a priority transmission sequence of data packets to be transmitted.
  • a terminal includes a processor, a memory, and a program or instruction stored in the memory and operable on the processor.
  • the program or instruction is executed by the processor The steps of the method described in the first aspect are realized.
  • a terminal including a processor and a communication interface, wherein the processor is configured to determine a priority transmission order of data packets to be transmitted according to the first indication information, and the data packets to be transmitted are the The data packets to be transmitted; the MAC entity multiplexes the data packets to be transmitted into transmission resources according to the priority transmission sequence; and transmits the data packets to be transmitted.
  • a network side device in a seventh aspect, includes a processor, a memory, and a program or instruction stored in the memory and operable on the processor, the program or instruction is executed by the processor When executed, the steps of the method described in the second aspect are realized.
  • a network side device including a processor and a communication interface, where the processor is configured to determine a logical channel corresponding to a terminal; send first indication information for the logical channel to the terminal, The first indication information is used to indicate to the terminal a priority transmission order of data packets to be transmitted.
  • a ninth aspect provides a readable storage medium, on which a program or instruction is stored, and when the program or instruction is executed by a processor, the steps of the method described in the first aspect or the second aspect are implemented .
  • a chip in a tenth aspect, includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run programs or instructions, so as to implement the first aspect or the second aspect the method described.
  • a computer program/program product is provided, the computer program/program product is stored in a non-volatile storage medium, and the computer program/program product is executed by at least one processor to implement the A step in the method of the first aspect or the second aspect.
  • a communication device configured to perform the steps of the method described in the first aspect, or configured to perform the steps of the method described in the second aspect.
  • the MAC layer of the UE determines the multiplexing sequence of the corresponding data packets to be transmitted according to the first indication information corresponding to each data packet to be transmitted, so that Control information and special data with control functions in the same XR service flow can be processed and transmitted before other common service data, ensuring that these control information and special data are not affected by delayed transmission caused by service data buffering, and thus can be timely and reliable are sent from the UE to the network side, so that the network side can obtain them in time, and immediately generate and transmit the downlink service data sent to the UE.
  • FIG. 1 shows a schematic diagram of a wireless communication system
  • FIG. 2 shows a schematic flow diagram of a terminal-side data transmission method according to an embodiment of the present application
  • FIG. 3 shows a schematic flow diagram of a data transmission method at the network side device side according to an embodiment of the present application
  • Fig. 4 shows the schematic diagram of the data transmission of the embodiment of the present application
  • FIG. 5 shows a schematic structural diagram of a terminal-side data transmission device according to an embodiment of the present application
  • FIG. 6 shows a schematic structural diagram of a device-side data transmission device at the network side according to an embodiment of the present application
  • FIG. 7 shows a schematic structural diagram of a communication device according to an embodiment of the present application.
  • FIG. 8 shows a schematic diagram of the composition of a terminal in an embodiment of the present application.
  • FIG. 9 shows a schematic diagram of a composition of a network side device according to an embodiment of the present application.
  • first, second and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific sequence or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or described herein and that "first" and “second” distinguish objects. It is usually one category, and the number of objects is not limited. For example, there may be one or more first objects.
  • “and/or” in the description and claims means at least one of the connected objects, and the character “/” generally means that the related objects are an "or” relationship.
  • LTE Long Term Evolution
  • LTE-Advanced LTE-Advanced
  • LTE-A Long Term Evolution-Advanced
  • 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 the present application are often used interchangeably, and the described technology can be used for the above-mentioned system and radio technology, and can also be used for other systems and radio technologies.
  • the following description describes the New Radio (New Radio, NR) system for example purposes, and uses NR terminology in most of the following descriptions, but these techniques can also be applied to applications other than NR system applications, such as the 6th Generation (6th Generation , 6G) communication system.
  • 6th Generation 6th Generation
  • Fig. 1 shows a block diagram of a wireless communication system to which the embodiment of the present application is applicable.
  • the wireless communication system includes a terminal 11 and a network side device 12 .
  • the terminal 11 can also be called a terminal device or a user terminal (User Equipment, UE), and the terminal 11 can 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), handheld computer, netbook, ultra-mobile personal computer (UMPC), mobile Internet device (Mobile Internet Device, MID), wearable device (Wearable Device) or vehicle-mounted device (Vehicle User Equipment, VUE), pedestrian terminal (Pedestrian User Equipment, PUE) and other terminal-side equipment, wearable devices include: smart watches, bracelets, earphones, glasses, etc.
  • the network side device 12 may be a base station or a core network, where a base station may be called a node B, an evolved node B, an access point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a basic service Basic Service Set (BSS), Extended Service Set (ESS), Node B, Evolved Node B (eNB), Home Node B, Home Evolved Node B, Wireless Local Area Network (WLAN) ) access point, wireless fidelity (Wireless Fidelity, WiFi) node, transmitting and receiving point (Transmitting Receiving Point, TRP) or some other suitable term in the field, as long as the same technical effect is achieved, the base station is not limited to Specific technical vocabulary.
  • the core network device can be a location management device, for example, a location management function (Location Management Function (Location Management Function, LMF), Evolved Serving Mobile Location Center (Evolved Serving Mobile Location Center, E-SMLC), etc.
  • LMF Location Management Function
  • E-SMLC Evolved Serving Mobile Location Center
  • Degrees of Freedom describe the number of independent parameters used to define the movement of the viewport in three-dimensional (Dimensions, 3D) space.
  • the user can obtain the information of the new angle of view by turning the head and other actions in the virtual reality experience.
  • the XR user's head turning action can send an uplink signal to inform the base station.
  • the base station After receiving the uplink signal, the base station will schedule the required downlink data for the XR user for use.
  • XR services mainly include video data, audio data, and some control signaling and special data with control functions.
  • XR service transmission mainly involves uplink and downlink video/audio data transmission and interaction between terminal equipment (User Equipment) and wireless new networks (such as LTE/NR, etc.).
  • User Equipment terminal equipment
  • wireless new networks such as LTE/NR, etc.
  • the UE while transmitting the video and audio data itself, the UE needs to transmit some control signaling and special data with control functions uplink through the wireless network to control the generation of video and audio service data in the XR service sent by the network to the UE. , processing and downlink wireless transmission.
  • control information and special data with control functions include some service control data generated by the UE XR application encoder and control data information contained in the service transmission protocol, for example:
  • I frame or non-field of view (non Field of view, non-FOV) frame generated by the video encoder
  • User behavior data collected by sensors such as posture (pose)/control (control) data, etc.
  • the network can judge user behavior through the reception of these data, such as the above-mentioned user turning head and other actions, and then adjust the content of the video data sent;
  • TCP Transmission Control Protocol
  • ACK Acknowledgment
  • TCP feedback For the transmission control protocol (Transmission Control Protocol, TCP) positive confirmation (Acknowledgment, ACK) signaling (TCP feedback) for downlink audio/video service transmission, the network needs to decide whether it can continue according to whether the corresponding video/audio frame has been confirmed by the UE Send subsequent frames;
  • Real-time Transport Control Protocol (RTCP) ACK signaling is used to control the control signaling of real-time data transmission, confirm the real-time requirements and time synchronization of business data transmission.
  • RTCP Real-time Transport Control Protocol
  • the network usually needs to receive these control signaling and special data with control functions from the UE in a timely and reliable manner to obtain the transmission status of the current service and related necessary control information; the application server needs to further generate subsequent required information based on these information.
  • the transmitted video and audio service data are passed to the wireless network for processing and transmission, and finally these service data are downlinked to the UE.
  • This embodiment relates to a wireless communication access stratum (Access Statum, AS) uplink data processing and sending process of a UE.
  • AS wireless communication access stratum
  • Packet Data Convergence Protocol (PDCP) layer and radio bearer (1) Packet Data Convergence Protocol (PDCP) layer and radio bearer:
  • the service data generated by the UE's application layer will be classified into different service data flows according to its corresponding Quality-of-service (QoS) requirements, and each service data flow corresponds to the same or Similar QoS requirements.
  • QoS Quality-of-service
  • the service data flow corresponds to a QoS flow (flow)
  • EPS Evolved Packet System, Evolved Packet System
  • Radio Bearer Service data will be delivered to the AS layer in the form of packets (Packet), and will be further mapped to a radio bearer (Radio Bearer) at the AS layer according to its corresponding QoS flow (NR) or EPS bearer (LTE).
  • a radio bearer includes a PDCP entity (PDCP protocol layer processing entity), a Radio Link Control (Radio Link Control, RLC) entity (PDCP protocol layer processing entity) and the corresponding logical channel (located in the Media Access Control (Media Access Control) , MAC) protocol layer).
  • a data packet delivered to the AS layer When a data packet delivered to the AS layer is mapped to a radio bearer, it will be delivered to the corresponding PDCP entity in the form of a PDCP Service Data Unit (SDU) for processing.
  • the PDCP entity will generate a corresponding PDCP protocol data unit (Protocol Data Unicat, PDU) for each arriving PDCP SDU, and set a PDCP sequence number (sequence number, SN), which is used to represent each PDCP SDU in the PDCP entity and
  • the transmission order corresponding to the corresponding PDCP PDU; among them, the value of PDCP SN is set according to the order in which the PDCP SDU is delivered to the PDCP entity.
  • the PDCP entity will maintain an internal variable, TX_NEXT, which indicates the total number of PDCP PDUs transmitted by the PDCP entity, and is used to set the value of the PDCP SN; when the PDCP entity is established, it is initialized to 0, and each time a PDCP SDU is sent from the upper layer (Upper layers) to the corresponding PDCP entity, the PDCP entity will set the SN of the PDCP PDU corresponding to the PDCP SDU to TX_NEXT, and add 1 to TX NEXT.
  • TX_NEXT an internal variable
  • the PDCP entity will add a header file to each PDCP SDU to generate a corresponding PDCP PDU, which contains the SN value set for the PDCP PDU.
  • the PDCP Entity usually delivers the PDCP PDUs to the lower protocol layer (RLC) in sequence according to the order of the SNs contained in the PDCP PDUs for subsequent processing and transmission.
  • RLC protocol layer
  • SN is an ordinal number, indicating which number each PDCP SDU is transmitted.
  • the general principle is that the earlier the PDCP SDU arrives at the PDCP entity, the smaller the SN value, and the earlier the transmission
  • the PDCP PDU delivered from the PDCP entity to the corresponding RLC entity will be buffered in the buffer of the UE as an RLC SDU to be transmitted, and further processed by the RLC entity. Specifically, when a logical channel corresponding to an RLC entity is allocated certain transmission resources, the RLC entity will determine which RLC SDUs can be multiplexed into allocated transmission resources for transmission.
  • the RLC entity For one or more RLC SDUs determined by the RLC entity that can be completely multiplexed into the allocated transmission resources, the RLC entity (entity) will add corresponding RLC header files to these RLC SDUs, and generate corresponding RLC PDUs, and pass them to The lower protocol layer (MAC) performs subsequent processing and transmission.
  • MAC lower protocol layer
  • the RLC entity will perform segmentation processing, that is, add a header file to a part of the data of the next RLC SDU to be transmitted, generate an RLC PDU and pass it to the lower protocol layer for subsequent processing and transmission.
  • the remaining part will still be kept in the UE's buffer, waiting for the arrival of the next uplink transmission resource, and then transmit.
  • the RLC entity corresponding to each radio bearer further corresponds to a logical channel (logical channel, LCH) at the MAC layer.
  • LCH logical channel
  • the UE's MAC entity will further allocate the uplink transmission resource among multiple logical channels.
  • each logical channel corresponds to a logical channel priority
  • the MAC entity of the UE is based on the logical channel priority processing (Logical channel prioritization, LCP) resource allocation mechanism, according to the logical channel priority from high to low for each
  • LCP Logical channel prioritization
  • the corresponding RLC entity will transfer one or more RLC PDUs to the corresponding logical channel of the MAC layer.
  • the MAC layer will use these RLC PDUs obtained by each logical channel from the RLC entity as the MAC SDU to be transmitted, add the MAC header file corresponding to the corresponding logical channel, form the MAC sub-PDU (subPDU) of the corresponding logical channel, and multiplex it In the entire transmission resource, it is used as the data sent in the uplink transmission of this logical channel.
  • the MAC subPDUs of multiple logical channels will be combined together to finally form a MAC PDU, which is used as the data packet sent uplink this time and transmitted to the network through wireless signals.
  • the UE since the RLC entity will segment the RLC SDU (as described above), for the uplink transmission resources obtained by each UE, the UE needs to first segment the RLC that has been segmented in the previous transmission and has not yet been transmitted. The remaining part of the SDU is multiplexed into resources for transmission, and then subsequent data packets corresponding to other RLC SDUs can be transmitted.
  • the UE In general, in the existing LTE and NR networks, the UE usually adopts the principle of "first arrival, first transmission" for the data of each radio bearer to realize the above-mentioned uplink data processing and transmission process. Specifically, for each radio bearer, the UE will process the data packets (SDU) in the order in which the data packets (SDU) are delivered to the corresponding entity of this layer at each of the above protocol layers, and deliver the processed data packets (PDU) to the the next protocol layer.
  • SDU data packets
  • PDU processed data packets
  • the corresponding PDCP entity will set the first PDCP SN value for it, so that it will be the first to be processed by the above-mentioned protocol layers, and will be the first to be multiplexed into the uplink resource for further processing.
  • Transmission; the data packets that arrive later will be assigned a later PDCP SN value, and will usually be processed, multiplexed, and transmitted by the above-mentioned protocol layers after the data packets that arrive earlier.
  • the UE finally performs an in-sequence transmission mechanism according to the order in which the data packets arrive at the AS.
  • This principle is mainly based on the consideration of transmission delay: in the existing wireless network, the transmission delay requirements of data in each radio bearer are basically the same, and the UE AS layer is not allowed to obtain each data packet in the existing wireless network Specific content, it is impossible to perform differentiated processing for each data packet; therefore, it is more reasonable in the prior art to perform uplink processing, scheduling and transmission of data packets according to the order of arrival of data packets, from the perspective of ensuring time delay as much as possible Way.
  • the wireless network can support the user's XR service transmission.
  • the application server on the network side generates XR service data such as video and audio, and transmits it downlink to the UE through the wireless network;
  • the side also needs to send the generated XR service data information such as video and audio, as well as the above-mentioned control signaling and special data with control functions to the network, and through these control information/special data, in turn control the generation of XR service data on the network side and transmission.
  • the generation and transmission of downlink XR service data on the network side depends on whether the uplink control information on the UE side can be sent to the network in a timely and effective manner.
  • the existing XR service technology is introduced, in the existing wireless network (such as NR/LTE), the uplink XR service generated by the UE will be mapped to the same service data flow (NR ⁇ QoS flow; LTE ⁇ EPS bearer), And further mapped to the same radio bearer in the AS layer, it will not distinguish which data packets are XR service data such as video and audio itself, and which data packets are special/important data with control information. Further, after the datagram of the service data corresponding to the XR is delivered to the corresponding radio bearer of the AS layer, data processing and wireless transmission will be performed based on the above-mentioned "first arrival, first transmission" method.
  • Business data packets can only be processed and transmitted after the processing/transmission is completed, resulting in a large uplink transmission delay, and even causing these important data to be discarded due to timeout, resulting in these special/important data with control functions not being sent to the UE in a timely and reliable manner. sent to the network. Due to the interactive nature of the XR service, this will further prevent the application server on the network side from obtaining the required control information from the UE in a timely manner, resulting in the inability to generate and transmit the corresponding XR service data to the UE in a timely manner, resulting in the failure of the downlink XR service to send Consequences such as pauses, delay buffering, etc., seriously affect the user's XR service experience.
  • An embodiment of the present application provides a data transmission method, as shown in FIG. 2 , executed by a terminal, and the method includes:
  • Step 101 Determine the priority transmission sequence of the data packets to be transmitted according to the first indication information, the data packets to be transmitted are data packets to be transmitted in the logical channel;
  • the first indication information corresponding to each data packet to be transmitted is configured or pre-configured by the network side device or stipulated by a protocol.
  • Step 102 The MAC entity multiplexes the data packets to be transmitted into transmission resources according to the priority transmission sequence
  • the transmission resource is an uplink transmission resource grant allocated by the base station.
  • Step 103 Transmit the data packet to be transmitted.
  • the MAC layer of the UE determines the multiplexing sequence of the corresponding data packets to be transmitted according to the first indication information corresponding to each data packet to be transmitted, so that Control information and special data with control functions in the same XR service flow can be processed and transmitted before other common service data, ensuring that these control information and special data are not affected by delayed transmission caused by service data buffering, and thus can be timely and reliable are sent from the UE to the network side, so that the network side can obtain them in time, and immediately generate and transmit the downlink service data sent to the UE.
  • the MAC layer of the UE identifies the data packets to be transmitted for each logical channel according to the characteristic indication information (ie, the first indication information) carried by each data packet.
  • Special data packets transmitted, and these data packets are preferentially multiplexed into transmission resources, without changing the SN setting rules defined by the existing PDCP protocol, and PDCP entities set the SN of PDCP SDUs, so that these special data packets that need to be transmitted preferentially can be preceded by Other common business data is multiplexed into transmission resources for transmission.
  • each data packet when each data packet is delivered to the AS, it needs to carry its characteristic indication information, so that the corresponding AS protocol layer of the UE can identify the data packet that needs to be transmitted preferentially according to its characteristic indication information (for example, but not limited to control signaling data and special data with control functions in the aforementioned XR service).
  • the specific form of the characteristic indication information of each data packet may be, the priority transmission level corresponding to each data packet, the importance level, the transmission delay requirement, the identification of whether to transmit preferentially, the data type indication information, and the like.
  • the AS layer of the UE determines the data packets that need to be transmitted preferentially in each radio bearer according to these characteristic indication information, and realizes the preferential processing and transmission thereof.
  • the first indication information is used to indicate any of the following for each of the data packets to be transmitted:
  • Data type indication information for example, the first data type corresponds to control data and special data that need to be transmitted preferentially, and the second data type corresponds to ordinary business data;
  • the data packets that need to be transmitted with priority can be distinguished through the first indication information, and the data packets to be transmitted are divided into different data types according to the business type, and each data type corresponds to a different priority transmission level, importance level or transmission delay need.
  • the first indication information corresponds to the RLC SDU
  • the step of the MAC entity multiplexing the data packets to be transmitted into transmission resources according to the priority transmission order specifically includes: the MAC entity according to the priority transmission order, and the RLC corresponding to the RLC SDU PDUs are multiplexed into transport resources.
  • the MAC entity multiplexes the RLC PDU corresponding to the RLC SDU into transmission resources according to the priority transmission order, including:
  • the first indication information indicates the priority transmission level
  • the first indication information indicates the importance level
  • the first indication information indicates the transmission delay requirement information
  • the first indication information indicates the "whether to transmit preferentially” identifier, preferentially multiplexing the RLC PDU corresponding to the RLC SDU identified as "transmit preferentially”;
  • the RLC PDU corresponding to the RLC SDU whose data type is the first data type is preferentially multiplexed.
  • priority transmission of control data and special data can be achieved by setting priority transmission levels, importance levels, transmission delay requirements, "priority transmission" flags and/or data types of control data and special data.
  • the RLC PDU corresponding to the RLC SDU before multiplexing the RLC PDU corresponding to the RLC SDU, if there is a first RLC SDU in the logical channel, then preferentially multiplexing the RLC PDU corresponding to the first RLC SDU;
  • the first RLC SDU is an RLC SDU that was segmented in one or several previous transmissions and still has some remaining data waiting for subsequent transmission.
  • the MAC entity multiplexes the RLC PDU corresponding to the target RLC SDU that meets the first condition and the second condition until the first condition cannot be satisfied. condition and/or second condition;
  • the second RLC SDU is an RLC SDU that was segmented in one or several transmissions before and still has some remaining data waiting for subsequent transmission;
  • the first condition includes any of the following:
  • the priority transmission level corresponding to the target RLC SDU is higher than the priority transmission level of the second RLC SDU;
  • the importance level corresponding to the target RLC SDU is higher than the importance level of the second RLC SDU;
  • the transmission delay requirement corresponding to the target RLC SDU is lower than the transmission delay requirement of the second RLC SDU;
  • the target RLC SDU is identified as "priority transmission"
  • the data type corresponding to the target RLC SDU is a first data type, and the data type of the second RLC SDU is a second data type different from the first data type;
  • the second condition includes:
  • RLC SDUs that can be fully multiplexed into said transport resource.
  • the MAC entity if there is a second RLC SDU in the radio bearer corresponding to the logical channel, the MAC entity multiplexes the RLC PDU corresponding to the target RLC SDU that meets the first condition and the second condition until it cannot meet After the steps up to the first condition and/or the second condition, the method further includes:
  • the RLC PDU corresponding to the second RLC SDU is multiplexed.
  • the multiplexing the RLC PDU corresponding to the second RLC SDU in the case that there are still remaining transmission resources includes:
  • the RLC PDUs corresponding to the remaining RLC SDUs in the logical channel are multiplexed into the transmission resources.
  • the MAC entity multiplexes the RLC PDU corresponding to the RLC SDU into transmission resources according to the priority transmission order, including:
  • the first indication information indicates the priority transmission level
  • multiplexing is performed according to the order of their corresponding PDCP SNs or according to a preset transmission rule
  • the first indication information indicates the importance level
  • multiplexing is performed in the order of their corresponding PDCP SNs or multiplexed according to a preset transmission rule
  • the first indication information indicates the transmission delay requirement information
  • multiplexing is performed according to the order of their corresponding PDCP SNs or according to a preset transmission rule reuse;
  • the first indication information indicates the "priority transmission” flag
  • multiplexing is performed according to the order of their corresponding PDCP SNs or according to the preset transmission Rules are reused;
  • the first indication information indicates the data type indication information
  • multiplexing is performed according to the order of their corresponding PDCP SNs or multiplexed according to a preset transmission rule use.
  • the transmission rule is determined by any of the following methods: determined by the terminal; configured by the network side device; specified by the protocol.
  • the method before the step of the MAC entity multiplexing the data packets to be transmitted into transmission resources according to the priority transmission order, the method further includes:
  • the AS layer entity transfers the data packet to be transmitted and the corresponding first indication information to the PDCP entity;
  • the PDCP entity allocates a PDCP SN for each data packet to be transmitted, and generates a corresponding PDCP PDU, which is delivered to the RLC entity;
  • the RLC entity delivers the PDCP PDU to the MAC entity as an RLC SDU;
  • the MAC entity multiplexes the data packets to be transmitted into transmission resources according to the priority transmission order, and the step of transmitting the data packets to be transmitted includes:
  • the MAC entity multiplexes the RLC PDU corresponding to the RLC SDU into transmission resources according to the first indication information corresponding to the RLC SDU;
  • the MAC entity uses the multiplexed data of all logical channels as MAC SDUs of the logical channels, respectively adds MAC header files to form MAC PDUs, and uses the transmission resources to perform uplink transmission of the MAC PDUs.
  • the method before the step of determining the priority transmission order of the data packets to be transmitted according to the first indication information, the data packets to be transmitted being the data packets to be transmitted in the logical channel, the method further includes:
  • the second indication information may be used to indicate whether the PDCP entity corresponding to the logical channel on the network side supports the data receiving mode of out-of-sequence delivery.
  • non-sequential delivery means that if the PDCP entity at the communication receiving end fails to receive data in accordance with the data sending order of the communication sending end, it does not need to reorder the received data and can directly pass it to the upper protocol stack for further processing. deal with.
  • the data packet to be transmitted is an XR data packet
  • the data packet of the first data type includes at least one of the following:
  • the data packets to be transmitted are classified into different data types according to service types, and each data type corresponds to a different priority transmission level, importance level or transmission delay requirement.
  • the embodiment of the present invention also provides a data transmission method, which is executed by a network side device, as shown in FIG. 3 , including:
  • Step 201 Determine the logical channel corresponding to the terminal
  • Step 202 Send to the terminal first indication information for the logical channel, where the first indication information is used to indicate to the terminal a priority transmission sequence of data packets to be transmitted.
  • the first indication information is further used to indicate that the PDCP entity corresponding to the logical channel supports the transfer of non-sequential data.
  • the method further includes:
  • control information data packets/special data packets with control functions and common service data packets are transmitted sequentially, and there is no priority transmission.
  • the MAC layer determines the priority transmission order of the data packets, and can preferentially multiplex the control information data packets/special data packets with control functions into the transmission resources, avoiding the XR service from being stuck, and ensuring the user's XR service experience.
  • the data transmission method includes the following steps:
  • Step 1 The data packet is delivered to the AS layer and mapped to the corresponding data radio bearer as a PDCP SDU. While transmitting the data packets, the upper layer provides the AS layer with the characteristic indication information corresponding to each data packet through interlayer primitives.
  • Feature indication information can be in one of the following forms:
  • the priority transmission level, or importance level, or transmission delay requirement information corresponding to each data packet it correspondingly indicates the priority transmission level, importance level, and transmission delay requirement corresponding to each PDCP SDU length.
  • the services with high priority transmission level, higher importance level, and shorter transmission delay require more priority transmission.
  • a possible implementation method is to assign the above-mentioned control signaling and special data packets with control functions to a high priority transmission level, a high importance level, or set a short transmission delay requirement, and set the normal data service to a relative Lower priority transmission level, importance level or set longer transmission delay requirements.
  • the "prioritized transmission" flag corresponding to each data packet can be a "0-1" binary flag, which is used to identify whether each PDCP SDU needs to be transmitted prior to other data packets in the same radio bearer.
  • a possible implementation is to indicate the above-mentioned control signaling and special data packets with control functions as “priority transmission”, and indicate other ordinary data packets as “non-priority transmission” or set the flag as the default value.
  • the data type indication information corresponding to each data packet can be "control information”, "special data”, “common business data” and other data types, which are transmitted to the AS with each data packet, indicating the corresponding PDCP SDU
  • the data type, and each protocol stack of the AS determines whether it needs to be transmitted preferentially according to its corresponding data type.
  • One possible implementation is to set the above “I frame”, “non-FoV frame”, “TCP ACK”, “RTCP signaling” and “pose/Control” as the first data type, which corresponds to the above “ control information” or “special data”, and set other business data as the second data type, which corresponds to "common business data” or the default value; or you can directly set "I frame”, “non-FoV frame” , “TCP ACK”, “RTCP signaling", “pose/Control”, etc. are used as data types to indicate each data packet.
  • the corresponding protocol stack of the AS judges whether the corresponding PDCP PDU needs to be transmitted preferentially based on the above-mentioned characteristic indication information corresponding to each PDCP SDU, and adopts corresponding scheme alignment for processing.
  • the above-mentioned relevant rules and configuration information for setting the corresponding data packet characteristic indication information for each data packet may be that the base station/core network passes RRC signaling (base station), NAS signaling (core network), application layer signaling (Core network) and other wireless network control signaling is configured to the relevant protocol layer of the UE, or set in the UE storage device or uSIM in a pre-configured manner, or can be pre-defined in a related standard protocol.
  • Related protocol layers of the UE such as application layer, transport layer, non-access layer (non-AS, NAS), etc., set corresponding feature indication information for each generated data packet according to the configuration information and rules.
  • the network can classify different service areas into different data types, and set corresponding priority transmission levels, transmission importance levels, and transmission delays for each different data type. Requirements and other feature indication information, and configured to the UE through the above-mentioned signaling method, or pre-configured to the UE. For example, the network can set "TCP ACK” and "RTCP signaling" as the first data type, and configure them with the highest priority transmission level, importance level or shortest transmission delay requirements; set “Pose/Control" data , "I frame", “non-FoV frame”, etc.
  • the above example is only a possible implementation manner; the above method may have other specific configurations and manners, which are not limited in this application.
  • Step 2 For each PDCP SDU, the PDCP entity assigns it a PDCP SN (that is, sets the SN value according to the order in which the PDCP SDU is delivered to the AS), and generates a corresponding PDCP PDU; and then delivers it to the corresponding RLC entity as a pending
  • the transmitted RLC SDU is stored in the buffer, waiting for subsequent processing and transmission.
  • each RLC SDU is a PDCP PDU, and since each PDCP PDU corresponds to a unique PDCP SDU, the above characteristic indication information carried by each PDCP SDU is also applicable to the corresponding PDCP PDU and RLC SDU.
  • Step 3 When the MAC layer of the UE obtains an uplink transmission resource, the MAC entity allocates an available transmission resource for each logical channel in a logical channel priority manner.
  • the uplink transmission resource may be an uplink transmission resource grant (Uplink grant) allocated by the base station.
  • Step 4 For the available transmission resources allocated to each logical channel, the UE MAC layer further performs the following conditions on the transmission resources contained in each logical channel according to the different forms of the characteristic indication information corresponding to each PDCP PDU/RLC SDU. Data packets are multiplexed:
  • Each data packet carries information such as priority transmission level, importance level, and transmission delay requirements
  • the remaining part of the RLC SDU is preferentially multiplexed into In the transmission resources allocated for the corresponding logical channel; after that, for other RLC SDUs buffered for the logical channel to be transmitted, according to the priority transmission level corresponding to these RLC SDUs from high to low, or the importance level from high to low, or transmit Latency needs to be multiplexed into the remaining transmission resources in order from short to long; until the transmission resources are used up or all data has been multiplexed into the resources.
  • the multiplexing order can depend on the specific implementation of the UE and is not specified; or it can be performed in the order of its corresponding PDCP SN multiplexing; or the UE randomly determines the multiplexing order of these RLC SDUs.
  • the remaining part of the RLC SDU is preferentially multiplexed into Among the transmission resources allocated for the corresponding logical channel; after that, among other RLC SDUs to be transmitted buffered for this logical channel, those RLC SDUs marked as "priority transmission" are preferentially multiplexed until the transmission resources are used up or all data are exhausted. It has been multiplexed into resources; if the resources are still left after multiplexing these RLC SDUs, then multiplex the RLC SDUs marked as "non-priority transmission" or the flag is set as the default.
  • RLC SDUs identified as “priority transmission” their multiplexing order may depend on the specific implementation of the UE, and no specific regulations are made; or they are multiplexed in accordance with the order of their corresponding PDCP SNs; Or the UE randomly determines the multiplexing sequence of these RLC SDUs.
  • the remaining part of the RLC SDU is preferentially multiplexed into Among the transmission resources allocated by the corresponding logical channel; afterward, among other RLC SDUs to be transmitted buffered for this logical channel, those indicated as the first data type (such as "control information”, “special data”, “I frame”, “non-FoV frame”, “TCP ACK”, "RTCP signaling", "pose/Control” and other RLC SDUs with special data types) until the transmission resources are used up or all data has been multiplexed to In resources; if the resources are still left after multiplexing these RLC SDUs, then multiplexing is indicated as the second data type (such as "common service data") or the data type indicates the RLC SDU that is set as the default.
  • the first data type such as "control information", “special data”, “I frame”, “non-FoV frame”, “TCP ACK”, "RTCP signaling", "pose/Control” and other RLC SDUs with special data types
  • the further multiplexing sequence between these data can depend on the specific implementation of the UE and is not specified; or according to the corresponding PDCP SN
  • the order of the RLC SDUs is multiplexed; or the order of these RLC SDUs is randomly determined by the UE.
  • the UE can use some rules to further sort the priority transmission levels of these special data types of PDCP PDUs at the AS protocol layer, for example: "pose/Control" data has the highest priority transmission level, and "TCP ACK/RTCP signaling" is the second highest , "I frame/non-FoV frame” again and so on.
  • the rule can be configured by the base station through RRC signaling, or defined by a standard protocol.
  • the above-mentioned various feature indication information corresponds to a PDCP PDU/RLC SDU, and since a PDCP PDU/RLC SDU can correspond to a certain PDCP SDU or RLC PDU, the feature indication information corresponds to In one PDCP SDU/RLC PDU.
  • Step 5 After performing the operations in Step 4 above for each logical channel, the MAC entity uses the multiplexed data of all logical channels as MAC SDUs corresponding to their respective logical channels, respectively adds MAC header files, and further composes MAC PDUs.
  • the above uplink resource is used for uplink transmission.
  • the base station can configure the indication information of "whether to give priority to transmission" for each radio bearer of the UE.
  • the UE judges whether the radio bearer is allowed to perform the operation in step 4: if the corresponding indication information is set to "allow priority transmission", then perform the logical channel multiplexing operation in the above step 4; otherwise, the UE will follow the In the prior art, an in-sequence multiplexing mechanism based on SN order is implemented.
  • the data transmission method includes the following steps:
  • Step 1 The data packet is delivered to the AS layer and mapped to the corresponding data radio bearer as a PDCP SDU. While the data packet transmits the data packet, the upper layer provides the AS layer with the characteristic indication information corresponding to each data packet by way of interlayer primitives.
  • Feature indication information can be in one of the following forms:
  • the priority transmission level, or importance level, or transmission delay requirement information corresponding to each data packet it correspondingly indicates the priority transmission level, importance level, and transmission delay requirement corresponding to each PDCP SDU length.
  • the services with high priority transmission level, higher importance level, and shorter transmission delay require more priority transmission.
  • a possible implementation method is to assign the above-mentioned control signaling and special data packets with control functions to a high priority transmission level, a high importance level, or set a short transmission delay requirement, and set the normal data service to a relative Lower priority transmission level, importance level or set longer transmission delay requirements.
  • the "prioritized transmission" flag corresponding to each data packet can be a "0-1" binary flag, which is used to identify whether each PDCP SDU needs to be transmitted prior to other data packets in the same radio bearer.
  • a possible implementation is to indicate the above-mentioned control signaling and special data packets with control functions as “priority transmission”, and indicate other ordinary data packets as “non-priority transmission” or set the flag as the default value.
  • the data type indication information corresponding to each data packet can be "control information”, "special data”, “common business data” and other data types, which are transmitted to the AS with each data packet, indicating the corresponding PDCP SDU
  • the data type, and each protocol stack of the AS determines whether it needs to be transmitted preferentially according to its corresponding data type.
  • One possible implementation is to set the above “I frame”, “non-FoV frame”, “TCP ACK”, “RTCP signaling” and “pose/Control” as the first data type, which corresponds to the above “ control information” or “special data”, and set other business data as the second data type, which corresponds to "common business data” or the default value; or you can directly set "I frame”, “non-FoV frame” , “TCP ACK”, “RTCP signaling", “pose/Control”, etc. are used as data types to indicate each data packet.
  • the corresponding protocol stack of the AS judges whether the corresponding PDCP PDU needs to be transmitted preferentially based on the above-mentioned characteristic indication information corresponding to each PDCP SDU, and adopts corresponding scheme alignment for processing.
  • the above-mentioned relevant rules and configuration information for setting the corresponding data packet characteristic indication information for each data packet may be that the base station/core network passes RRC signaling (base station), NAS signaling (core network), application layer signaling (Core network) and other wireless network control signaling is configured to the relevant protocol layer of the UE, or set in the UE storage device or uSIM in a pre-configured manner, or can be pre-defined in a related standard protocol.
  • Related protocol layers of the UE such as application layer, transport layer, non-access layer (non-AS, NAS), etc., set corresponding feature indication information for each generated data packet according to the configuration information and rules.
  • the network can classify different service areas into different data types, and set corresponding priority transmission levels, transmission importance levels, and transmission delays for each different data type. Requirements and other feature indication information, and configured to the UE through the above-mentioned signaling method, or pre-configured to the UE. For example, the network can set "TCP ACK” and "RTCP signaling" as the first data type, and configure them with the highest priority transmission level, importance level or shortest transmission delay requirements; set “Pose/Control" data , "I frame", “non-FoV frame”, etc.
  • the above example is only a possible implementation manner; the above method may have other specific configurations and manners, which are not limited in this application.
  • Step 2 For each PDCP SDU, the PDCP entity assigns it a PDCP SN (that is, sets the SN value according to the order in which the PDCP SDU is delivered to the AS), and generates a corresponding PDCP PDU; and then delivers it to the corresponding RLC entity as a pending
  • the transmitted RLC SDU is stored in the buffer, waiting for subsequent processing and transmission.
  • each RLC SDU is a PDCP PDU, and since each PDCP PDU corresponds to a unique PDCP SDU, the above characteristic indication information carried by each PDCP SDU is also applicable to the corresponding PDCP PDU and RLC SDU.
  • Step 3 When the MAC layer of the UE obtains an uplink transmission resource, the MAC entity allocates an available transmission resource for each logical channel in a logical channel priority manner.
  • the uplink transmission resource may be an uplink transmission resource grant (Uplink grant) allocated by the base station.
  • Step 4 For the available transmission resources allocated to each logical channel, the UE MAC layer further performs the following conditions on the transmission resources contained in each logical channel according to the different forms of the characteristic indication information corresponding to each PDCP PDU/RLC SDU. Data packets are multiplexed:
  • RLC SDUs with a priority transmission level, or importance level, or a transmission delay requirement higher than that of the RLC SDU in the corresponding radio bearer those that can be completely multiplexed to the transmission resources are preferentially multiplexed RLC SDUs in the RLC SDU until it is impossible to completely multiplex the next RLC SDU with higher priority/higher importance or shorter transmission delay (that is, these RLC SDUs are not allowed to be segmented); After using up these RLC SDUs with higher priority transmission levels/importance levels, or shorter delay requirements, if there are still remaining resources, further multiplex the above "segmented in one or several previous transmissions, and There is still some remaining data waiting for the data corresponding to the RLC SDU of the "RLC SDU" for subsequent transmission.
  • all RLC SDUs to be transmitted in the logical channel are directly assigned according to their corresponding priority transmission levels. From high to low, or from high to low importance level, or from short to long transmission delay level, the RLC PDU corresponding to the RLC SDU is multiplexed into the transmission resource until the transmission resource is used up or all data has been used. reused in resources.
  • RLC SDU is identified as “non-priority transmission” or the RLC SDU with the identification set to the default value, and there are currently other RLC SDUs identified as “priority transmission”, then in these RLC SDUs identified as "priority transmission” Among the RLC SDUs, those RLC SDUs that can be completely multiplexed into the transmission resources are preferentially multiplexed until the next RLC SDU marked as "priority transmission" cannot be completely multiplexed (that is, it is not allowed to use these RLC SDUs) SDUs for segmentation processing); after multiplexing these RLC SDUs with higher priority transmission level/importance level or shorter delay requirements, if there are still remaining resources, then further multiplex the above "once segmented, And there is still a part of the rest of the data that has not been transmitted". The data corresponding to the RLC SDU.
  • RLC SDU If there is currently no other RLC SDU marked as "priority transmission" except this RLC SDU, the above-mentioned RLC SDU that "has been segmented and still has part of the remaining data not yet completed" is multiplexed first, and then according to The SN values of RLC SDUs are multiplexed into RLC SDUs in sequence.
  • the RLC SDU is indicated as the second data type (such as “common service data” type) or the RLC SDU with the indication set as the default value, and there are currently other data types indicated as the first data type (such as "control information” , “Special Data”, “I Frame”, “non-FoV Frame”, “TCP ACK”, “RTCP Signaling”, “pose/Control” and other RLC SDUs with special data types), they are marked as the first Among the RLC SDUs of a data type, those RLC SDUs that can be completely multiplexed into the transmission resources are preferentially multiplexed until the next RLC SDU indicated as the first data type cannot be completely multiplexed (ie Segmentation processing of these RLC SDUs is not allowed); after multiplexing the RLC SDUs of these special data types, if there are still remaining resources, then further multiplexing The data corresponding to the RLC SDU of "transmission”.
  • the first data type such as “control information” , "Speci
  • RLC SDU If there is no other RLC SDU indicated as the above-mentioned first data type except this RLC SDU, firstly multiplex the above-mentioned RLC SDU that has been segmented and some remaining data has not yet been transmitted, and then according to The SN values of RLC SDUs are multiplexed into RLC SDUs in sequence.
  • the UE can use some rules to further sort the priority transmission levels of these special data types of PDCP PDUs at the AS protocol layer, for example: "pose/Control” data has the highest priority transmission level, and "TCP ACK/RTCP signaling" is the second highest , “I frame/non-FoV frame” again and so on.
  • the rule can be configured by the base station through RRC signaling, or defined by a standard protocol.
  • Step 5 After performing the operation in the above step 4 for each logical channel, the MAC entity uses the data multiplexed by all logical channels as the MAC SDU of the corresponding respective logical channels, Add MAC header files respectively to further compose MAC PDUs, and use the uplink resources for uplink transmission.
  • the execution subject may be a data transmission device, or a module in the data transmission device for executing the loading data transmission method.
  • the data transmission method provided in the embodiment of the present application is described by taking the data transmission device executing the loading data transmission method as an example.
  • the embodiment of the present application provides a data transmission device 300, which is applied to a terminal. As shown in FIG. 5, the device includes:
  • a processing module 310 configured to determine a priority transmission order of data packets to be transmitted according to the first indication information, where the data packets to be transmitted are data packets to be transmitted in a logical channel;
  • a multiplexing module 320 configured to multiplex the data packets to be transmitted into transmission resources according to the priority transmission order
  • the transmission module 330 is configured to transmit the data packet to be transmitted.
  • the MAC layer of the UE determines the multiplexing sequence of the corresponding data packets to be transmitted according to the first indication information corresponding to each data packet to be transmitted, so that Control information and special data with control functions in the same XR service flow can be processed and transmitted before other common service data, ensuring that these control information and special data are not affected by delayed transmission caused by service data buffering, and thus can be timely and reliable are sent from the UE to the network side, so that the network side can obtain them in time, and immediately generate and transmit the downlink service data sent to the UE.
  • the first indication information is used to indicate any of the following for each of the data packets to be transmitted:
  • the first indication information corresponds to the RLC SDU
  • the multiplexing module is specifically configured to multiplex the RLC PDU corresponding to the RLC SDU into transmission resources according to the priority transmission order.
  • the multiplexing module is specifically used for:
  • the first indication information indicates the priority transmission level
  • the first indication information indicates the importance level
  • the first indication information indicates the transmission delay requirement information
  • the first indication information indicates the "whether to transmit preferentially” identifier, preferentially multiplexing the RLC PDU corresponding to the RLC SDU identified as "transmit preferentially”;
  • the RLC PDU corresponding to the RLC SDU whose data type is the first data type is preferentially multiplexed.
  • the multiplexing module is specifically configured to multiplex the first RLC SDU with the first RLC SDU if there is a first RLC SDU in the logical channel before multiplexing the RLC PDU corresponding to the RLC SDU. Corresponding RLC PDU;
  • the first RLC SDU is an RLC SDU that was segmented in one or several previous transmissions and still has some remaining data waiting for subsequent transmission.
  • the multiplexing module is specifically used to multiplex the RLC PDU corresponding to the target RLC SDU that meets the first condition and the second condition, until it cannot until the first condition and/or the second condition are met;
  • the second RLC SDU is an RLC SDU that was segmented in one or several transmissions before and still has some remaining data waiting for subsequent transmission;
  • the first condition includes any of the following:
  • the priority transmission level corresponding to the target RLC SDU is higher than the priority transmission level of the second RLC SDU;
  • the importance level corresponding to the target RLC SDU is higher than the importance level of the second RLC SDU;
  • the transmission delay requirement corresponding to the target RLC SDU is lower than the transmission delay requirement of the second RLC SDU;
  • the target RLC SDU is identified as "priority transmission"
  • the data type corresponding to the target RLC SDU is a first data type, and the data type of the second RLC SDU is a second data type different from the first data type;
  • the second condition includes:
  • RLC SDUs that can be fully multiplexed into said transport resource.
  • the multiplexing module is specifically configured to multiplex the RLC PDU corresponding to the second RLC SDU when transmission resources remain.
  • the multiplexing module when there are still remaining transmission resources, is specifically configured to multiplex the RLC PDUs corresponding to the remaining RLC SDUs in the logical channel into the transmission resources.
  • the multiplexing module is specifically used for:
  • the first indication information indicates the priority transmission level
  • multiplexing is performed according to the order of their corresponding PDCP SNs or according to a preset transmission rule
  • the first indication information indicates the importance level
  • RLC SDUs with the same importance level perform multiplexing according to the order of their corresponding PDCP SNs or perform multiplexing according to preset transmission rules
  • the first indication information indicates the transmission delay requirement information
  • multiplexing is performed according to the order of their corresponding PDCP SNs or according to a preset transmission rule reuse;
  • the first indication information indicates the "priority transmission” flag
  • multiplexing is performed according to the order of their corresponding PDCP SNs or according to the preset transmission Rules are reused;
  • the first indication information indicates the data type indication information
  • multiplexing is performed according to the order of their corresponding PDCP SNs or multiplexed according to a preset transmission rule use.
  • the transmission rule is determined in any of the following ways: determined by the terminal; configured by a network side device; specified by a protocol.
  • the receiving module is configured to receive second indication information from the network side, and the logical channel is a logical channel specified by the second indication information.
  • the data packet to be transmitted is an XR data packet
  • the data packet of the first data type includes at least one of the following:
  • the first indication information is determined by any of the following methods: configured by the network side device; pre-configured; specified by a protocol.
  • the data packets to be transmitted are classified into different data types according to service types, and each data type corresponds to a different priority transmission level, importance level or transmission delay requirement.
  • the transmission resource is an uplink transmission resource grant allocated by the base station.
  • the data transmission device in the embodiment of the present application may be a device, a device with an operating system or an electronic device, or may be a component, an integrated circuit, or a chip in a terminal.
  • the apparatus or electronic equipment may be a mobile terminal or a non-mobile terminal.
  • the mobile terminal may include but not limited to the types of terminals 11 listed above, and the non-mobile terminal may be a server, a network attached storage (Network Attached Storage, NAS), a personal computer (personal computer, PC), a television ( television, TV), teller machines or self-service machines, etc., are not specifically limited in this embodiment of the present application.
  • the data transmission device provided by the embodiment of the present application can realize each process realized by the method embodiment in FIG. 2 and achieve the same technical effect. To avoid repetition, details are not repeated here.
  • the embodiment of the present application provides a data transmission device 400, which is applied to network side equipment, as shown in FIG. 6, the device includes:
  • a determining module 410 configured to determine a logical channel corresponding to the terminal
  • the sending module 420 is configured to send first indication information for the logical channel to the terminal, where the first indication information is used to indicate to the terminal a priority transmission sequence of data packets to be transmitted.
  • the first indication information is further used to indicate that the PDCP entity corresponding to the logical channel supports the transfer of non-sequential data.
  • the sending module is further configured to send second indication information to the terminal, and the logical channel is a logical channel specified by the second indication information.
  • this embodiment of the present application further provides a communication device 500, including a processor 501, a memory 502, and programs or instructions stored in the memory 502 and operable on the processor 501,
  • a communication device 500 including a processor 501, a memory 502, and programs or instructions stored in the memory 502 and operable on the processor 501
  • the communication device 500 is a terminal
  • the program or instruction is executed by the processor 501
  • each process of the above embodiment of the data transmission method applied to the terminal can be implemented, and the same technical effect can be achieved.
  • the communication device 500 is a network-side device
  • the program or instruction is executed by the processor 501
  • each process of the above-mentioned embodiment of the data transmission method applied to the network-side device can be achieved, and the same technical effect can be achieved.
  • the embodiment of the present application also provides a terminal, including a processor and a communication interface, the processor is used to determine the priority transmission sequence of the data packets to be transmitted according to the first indication information, and the data packets to be transmitted are the data to be transmitted in the logical channel packet; the MAC entity multiplexes the data packets to be transmitted into transmission resources according to the priority transmission order; and transmits the data packets to be transmitted.
  • This terminal embodiment corresponds to the above-mentioned terminal-side method embodiment, and each implementation process and implementation mode of the above-mentioned method embodiment can be applied to this terminal embodiment, and can achieve the same technical effect.
  • FIG. 8 is a schematic diagram of a hardware structure of a terminal implementing an embodiment of the present application.
  • the terminal 1000 includes but not limited to: a radio frequency unit 1001, a network module 1002, an audio output unit 1003, an input unit 1004, a sensor 1005, a display unit 1006, a user input unit 1007, an interface unit 1008, a memory 1009, and a processor 1010, etc. at least some of the components.
  • the terminal 1000 can also include a power supply (such as a battery) for supplying power to various components, and the power supply can be logically connected to the processor 1010 through the power management system, so as to manage charging, discharging, and power consumption through the power management system. Management and other functions.
  • a power supply such as a battery
  • the terminal structure shown in FIG. 8 does not constitute a limitation on the terminal.
  • the terminal may include more or fewer components than shown in the figure, or combine some components, or arrange different components, which will not be repeated here.
  • the input unit 1004 may include a graphics processor (Graphics Processing Unit, GPU) 10041 and a microphone 10042, and the graphics processor 10041 is used for the image capture device (such as the image data of the still picture or video obtained by the camera) for processing.
  • the display unit 1006 may include a display panel 10061, and the display panel 10061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like.
  • the user input unit 1007 includes a touch panel 10071 and other input devices 10072 .
  • the touch panel 10071 is also called a touch screen.
  • the touch panel 10071 may include two parts, a touch detection device and a touch controller.
  • Other input devices 10072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, switch buttons, etc.), trackballs, mice, and joysticks, which will not be repeated here.
  • the radio frequency unit 1001 receives the downlink data from the network side device, and processes it to the processor 1010; in addition, sends the uplink data to the network side device.
  • the radio frequency unit 1001 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.
  • the memory 1009 can be used to store software programs or instructions as well as various data.
  • the memory 1009 may mainly include a program or instruction storage area and a data storage area, wherein the program or instruction storage area may store an operating system, at least one application program or instruction required by a function (such as a sound playback function, an image playback function, etc.) and the like.
  • the memory 1009 may include a high-speed random access memory, and may also include a nonvolatile memory, wherein the nonvolatile memory may be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM) , PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electrically erasable programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • ROM Read-Only Memory
  • PROM programmable read-only memory
  • PROM erasable programmable read-only memory
  • Erasable PROM Erasable PROM
  • EPROM electrically erasable programmable read-only memory
  • EEPROM electrically erasable programmable read-only memory
  • flash memory for example at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage device.
  • the processor 1010 may include one or more processing units; optionally, the processor 1010 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface, application programs or instructions, etc., Modem processors mainly handle wireless communications, such as baseband processors. It can be understood that the foregoing modem processor may not be integrated into the processor 1010 .
  • the processor 1010 is configured to determine the priority transmission order of the data packets to be transmitted according to the first indication information, and the data packets to be transmitted are data packets to be transmitted in the logical channel; the MAC entity, according to the priority transmission order, will The data packets to be transmitted are multiplexed into transmission resources; and the data packets to be transmitted are transmitted.
  • the first indication information is used to indicate any of the following for each of the data packets to be transmitted:
  • the first indication information corresponds to the RLC SDU
  • the processor 1010 is configured to multiplex the RLC PDUs corresponding to the RLC SDUs into transmission resources according to the priority transmission sequence.
  • the processor 1010 is configured to:
  • the first indication information indicates the priority transmission level
  • the first indication information indicates the importance level
  • the first indication information indicates the transmission delay requirement information
  • the first indication information indicates the "whether to transmit preferentially” identifier, preferentially multiplexing the RLC PDU corresponding to the RLC SDU identified as "transmit preferentially”;
  • the RLC PDU corresponding to the RLC SDU whose data type is the first data type is preferentially multiplexed.
  • the processor 1010 is configured to preferentially multiplex the RLC PDU corresponding to the first RLC SDU if there is a first RLC SDU in the logical channel before multiplexing the RLC PDU corresponding to the RLC SDU.
  • the first RLC SDU is an RLC SDU that was segmented in one or several previous transmissions and still has some remaining data waiting for subsequent transmission.
  • the processor 1010 is configured to multiplex the RLC PDU corresponding to the target RLC SDU satisfying the first condition and the second condition until the condition cannot be satisfied. up to the first condition and/or the second condition;
  • the second RLC SDU is an RLC SDU that was segmented in one or several transmissions before and still has some remaining data waiting for subsequent transmission;
  • the first condition includes any of the following:
  • the priority transmission level corresponding to the target RLC SDU is higher than the priority transmission level of the second RLC SDU;
  • the importance level corresponding to the target RLC SDU is higher than the importance level of the second RLC SDU;
  • the transmission delay requirement corresponding to the target RLC SDU is lower than the transmission delay requirement of the second RLC SDU;
  • the target RLC SDU is identified as "priority transmission"
  • the data type corresponding to the target RLC SDU is a first data type, and the data type of the second RLC SDU is a second data type different from the first data type;
  • the second condition includes:
  • RLC SDUs that can be fully multiplexed into said transport resource.
  • the processor 1010 is configured to multiplex the RLC PDU corresponding to the second RLC SDU in the case that there are still remaining transmission resources.
  • the processor 1010 is configured to multiplex the RLC PDUs corresponding to the remaining RLC SDUs in the logical channel into the transmission resources when there are still remaining transmission resources.
  • the processor 1010 is configured to execute:
  • the first indication information indicates the priority transmission level
  • multiplexing is performed in the order of their corresponding PDCP SNs or multiplexed according to preset transmission rules
  • the first indication information indicates the importance level
  • RLC SDUs with the same importance level perform multiplexing according to the order of their corresponding PDCP SNs or perform multiplexing according to preset transmission rules
  • the first indication information indicates the transmission delay requirement information
  • multiplexing is performed according to the order of their corresponding PDCP SNs or according to a preset transmission rule reuse;
  • the first indication information indicates the "priority transmission” flag
  • multiplexing is performed according to the order of their corresponding PDCP SNs or according to the preset transmission Rules are reused;
  • the first indication information indicates the data type indication information
  • multiplexing is performed according to the order of their corresponding PDCP SNs or multiplexed according to a preset transmission rule use.
  • the transmission rule is determined in any of the following ways: determined by the terminal; configured by a network side device; specified by a protocol.
  • the processor 1010 is configured to receive second indication information from the network side, and the logical channel is a logical channel specified by the second indication information.
  • the data packet to be transmitted is an XR data packet
  • the data packet of the first data type includes at least one of the following:
  • the first indication information is determined by any of the following methods: configured by the network side device; pre-configured; specified by a protocol.
  • the data packets to be transmitted are classified into different data types according to service types, and each data type corresponds to a different priority transmission level, importance level or transmission delay requirement.
  • the transmission resource is an uplink transmission resource grant allocated by the base station.
  • the embodiment of the present application also provides a network side device, including a processor and a communication interface, the processor is used to determine the logical channel corresponding to the terminal; and send the first indication information for the logical channel to the terminal, the first The indication information is used to indicate to the terminal the priority transmission order of the data packets to be transmitted.
  • the embodiment of the present application also provides a network side device.
  • the network device 700 includes: an antenna 71 , a radio frequency device 72 , and a baseband device 73 .
  • the antenna 71 is connected to a radio frequency device 72 .
  • the radio frequency device 72 receives information through the antenna 71, and sends the received information to the baseband device 73 for processing.
  • the baseband device 73 processes the information to be sent and sends it to the radio frequency device 72
  • the radio frequency device 72 processes the received information and sends it out through the antenna 71 .
  • the foregoing frequency band processing device may be located in the baseband device 73 , and the method performed by the network side device in the above embodiments may be implemented in the baseband device 73 , and the baseband device 73 includes a processor 74 and a memory 75 .
  • the baseband device 73 can include at least one baseband board, for example, a plurality of chips are arranged on the baseband board, as shown in FIG.
  • the baseband device 73 may also include a network interface 76 for exchanging information with the radio frequency device 72, such as a common public radio interface (common public radio interface, CPRI).
  • a network interface 76 for exchanging information with the radio frequency device 72, such as a common public radio interface (common public radio interface, CPRI).
  • CPRI common public radio interface
  • the network-side device in the embodiment of the present invention also includes: instructions or programs stored in the memory 75 and operable on the processor 74, and the processor 74 calls the instructions or programs in the memory 75 to execute the modules shown in FIG. 6 To avoid duplication, the method of implementation and to achieve the same technical effect will not be repeated here.
  • the embodiment of the present application also provides a readable storage medium, the readable storage medium stores a program or an instruction, and when the program or instruction is executed by a processor, each process of the above data transmission method embodiment is realized, and the same To avoid repetition, the technical effects will not be repeated here.
  • the processor is the processor in the terminal described in the foregoing embodiments.
  • the readable storage medium includes computer readable storage medium, such as computer read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk, etc.
  • the 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, and the processor is used to run programs or instructions to implement the above data transmission method embodiment
  • 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
  • the chip mentioned in the embodiment of the present application may also be called a system-on-chip, a system-on-chip, a system-on-a-chip, or a system-on-a-chip.
  • the embodiment of the present application further provides a computer program/program product, the computer program/program product is stored in a non-volatile storage medium, and the computer program/program product is executed by at least one processor to realize the above data
  • a computer program/program product is stored in a non-volatile storage medium
  • the computer program/program product is executed by at least one processor to realize the above data
  • the term “comprising”, “comprising” or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements, It also includes other elements not expressly listed, or elements inherent in the process, method, article, or device. Without further limitations, an element defined by the phrase “comprising a " does not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising that element.
  • the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved. Functions are performed, for example, the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
  • the methods of the above embodiments can be implemented by means of software plus a necessary general-purpose hardware platform, and of course also 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 computer software products, which are stored in a storage medium (such as ROM/RAM, magnetic disk, etc.) , CD-ROM), including several instructions to make a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the methods described in the various embodiments of the present application.

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Abstract

本申请公开一种数据传输方法、装置及终端、网络侧设备，属于通信技术领域。数据传输方法，由终端执行，所述方法包括：根据第一指示信息确定待传输数据包的优先传输顺序，所述待传输数据包为逻辑信道中的待传输的数据包；MAC实体按照所述优先传输顺序，将所述待传输数据包复用到传输资源中；对所述待传输数据包进行传输。

Description

数据传输方法、装置及终端、网络侧设备
相关申请的交叉引用
本申请主张在2021年08月13日在中国提交的中国专利申请No.202110933015.3的优先权，其全部内容通过引用包含于此。
技术领域
本申请涉及通信技术领域，具体涉及一种数据传输方法、装置及终端、网络侧设备。
背景技术
扩展现实(Extended reality,XR)是指由计算机技术和可穿戴设备产生的所有真实与虚拟的组合环境和人机交互。它包括增强现实(Augmented Reality，AR)、混合现实(Mixed Reality，MR)、虚拟现实(Virtual Reality，VR)等代表性形式，以及它们之间的插值区域。虚拟世界的级别从部分感官输入到完全沉浸式虚拟现实。XR的一个关键方面是人类经验的扩展，尤其是与存在感(以VR为代表)和认知习得(以AR为代表)相关的经验。
现有无线网络中，XR业务传输被映射到相同业务流、不区分具有控制功能的控制信息和特殊数据，从而导致上行控制信息和特殊数据传输时延过大、网络无法及时获取终端(User Equipment，UE)控制信息、影响XR业务体验的问题。
发明内容
本申请实施例提供了一种数据传输方法、装置及终端、网络侧设备，能够避免XR业务出现卡顿，保证用户的XR业务体验。
第一方面，本申请实施例提供了一种数据传输方法，由终端执行，所述方法包括：
根据第一指示信息确定待传输数据包的优先传输顺序，所述待传输数据 包为逻辑信道中的待传输的数据包；
MAC实体按照所述优先传输顺序，将所述待传输数据包复用到传输资源中；
对所述待传输数据包进行传输。
第二方面，本申请实施例提供了一种数据传输方法，由网络侧设备执行，包括：
确定与终端对应的逻辑信道；
向所述终端发送针对所述逻辑信道的第一指示信息，所述第一指示信息用于向所述终端指示待传输数据包的优先传输顺序。
第三方面，本申请实施例提供了一种数据传输装置，应用于终端，所述装置包括：
处理模块，用于根据第一指示信息确定待传输数据包的优先传输顺序，所述待传输数据包为逻辑信道中的待传输的数据包；
复用模块，用于按照所述优先传输顺序，将所述待传输数据包复用到传输资源中；
传输模块，用于对所述待传输数据包进行传输。
第四方面，本申请实施例提供了一种数据传输装置，应用于网络侧设备，所述装置包括：
确定模块，用于确定与终端对应的逻辑信道；
发送模块，用于向所述终端发送针对所述逻辑信道的第一指示信息，所述第一指示信息用于向所述终端指示待传输数据包的优先传输顺序。
第五方面，提供了一种终端，该终端包括处理器、存储器及存储在所述存储器上并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，所述处理器用于根据第一指示信息确定待传输数据包的优先传输顺序，所述待传输数据包为逻辑信道中的待传输的数据包；MAC实体按照所述优先传输顺序，将 所述待传输数据包复用到传输资源中；对所述待传输数据包进行传输。
第七方面，提供了一种网络侧设备，该终端包括处理器、存储器及存储在所述存储器上并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二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，所述处理器用于确定与终端对应的逻辑信道；向所述终端发送针对所述逻辑信道的第一指示信息，所述第一指示信息用于向所述终端指示待传输数据包的优先传输顺序。
第九方面，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或第二方面所述的方法的步骤。
第十方面，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，实现如第一方面或第二方面所述的方法。
第十一方面，提供了一种计算机程序/程序产品，所述计算机程序/程序产品被存储在非易失的存储介质中，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或第二方面所述的方法的步骤。
第十二方面，提供了一种通信设备，被配置为执行如第一方面所述的方法的步骤，或者被配置为执行如第二方面所述的方法的步骤。
在本申请实施例中，针对每个逻辑信道中的待传输数据包，UE的MAC层根据每个待传输数据包对应的第一指示信息，确定相应的待传输数据包的复用顺序，使得同一个XR业务流中具有控制功能的控制信息和特殊数据能够先于其他普通业务数据进行处理和传输，确保这些控制信息和特殊数据不被业务数据缓冲造成的延迟传输影响，进而能够及时、可靠的从UE发送到网络侧，使得网络侧可以及时获取它们、并即时生成和传输发送给UE的下行业务数据。
附图说明
图1表示无线通信系统的示意图；
图2表示本申请实施例终端侧数据传输方法的流程示意图；
图3表示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4表示本申请实施例数据传输的示意图；
图5表示本申请实施例终端侧数据传输装置的结构示意图；
图6表示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7表示本申请实施例通信设备的结构示意图；
图8表示本申请实施例的终端的组成示意图；
图9表示本申请实施例的网络侧设备的组成示意图。
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也可以称作终端设备或者用户终端(User Equipment，UE)，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)、可穿戴式设备(Wearable Device)或车载设备(Vehicle User Equipment，VUE)、行人终端(Pedestrian User Equipment，PUE)等终端侧设备，可穿戴式设备包括：智能手表、手环、耳机、眼镜等。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可以是基站或核心网，其中，基站可被称为节点B、演进节点B、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)、B节点、演进型B节点(eNB)、家用B节点、家用演进型B节点、无线局域网(Wireless Local Area Network，WLAN)接入点、无线保真(Wireless Fidelity，WiFi)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，但是并不限定基站的具体类型，所述核心网设备可以是位置管理设备，例如，位置管理功能(定 位管理功能(Location Management Function，LMF)、演进服务移动定位中心(Evolved Serving Mobile Location Center，E-SMLC)等。
用户希望在扩展现实中进行交互和操作，动作和互动包括动作、手势和身体反应。自由度(Degrees of Freedom，DoF)描述了用于定义三维(Dimensions，3D)空间中视口移动的独立参数的数量。
在XR的应用场景中，用户在虚拟现实体验中可以通过转头等动作来获取新视野角度的信息。这时XR用户的转头动作可以通过发送一个上行信号告知基站，基站在接收到上行信号后，会为该XR用户调度所需的下行数据以供使用。
XR业务主要包括视频数据、音频数据以及一些具有控制功能的控制信令和特殊数据。在无线网络中，XR业务传输主要涉及终端设备(User Equipement)与无线通过新网络(例如LTE/NR等)之间的上行和下行视频/音频数据传输和交互。其中，UE在传输视频、音频数据本身的同时，需要通过无线网络上行传输一些具有控制功能的控制信令和特殊数据，用以对控制网络为UE发送的XR业务中视频和音频业务数据的生成、处理及下行无线传输。
这些具有控制功能的控制信息和特殊数据包括UE XR应用编码器生成的一些业务控制数据及业务传输协议包含的控制数据信息，例如：
从应用层面，可以包括(但不限于)：
视频编码器生成的I帧或非视场角(non Field of view，non-FOV)帧；
传感器采集的用户行为数据，如姿态(pose)/控制(control)数据等；网络可以通过这些数据的接收，判断用户行为，例如上述的用户转头等动作，进而调整发送的视频数据内容；
从传输协议层面，可以包括：
针对下行音频/视频业务传输的传输控制协议(Transmission Control Protocol，TCP)肯定确认(Acknowledgement，ACK)信令(TCP反馈)，网络需要根据相应视频/音频帧是否已被UE确认，决定是否可以继续发送后续帧；
实时传输控制协议(Real-time Transport Control Protocol,RTCP)ACK信令，用于控制数据实时传输的控制信令，确认业务数据传输的实时性要求及时间同步。
网络通常需要及时、可靠地接收到来自UE的这些具有控制功能的控制信令和特殊数据，用以获取当前业务的传输状态以及相关必要控制信息；应用服务器需要基于这些信息、进一步生成后续所需传输的视频、音频业务数据，并传递给无线网络进行处理和传输，最终将这些业务数据下行发送给UE。
本实施例涉及UE的无线通信接入层(Access Statum，AS)上行数据处理及发送流程。下面对所涉及的主要协议层及相关功能的现有技术描述如下。
(1)分组数据汇聚协议(Packet Data Convergence Protocol，PDCP)层和无线承载(radio bearer)：
UE的应用层(Application，APP)生成的业务数据，会按照其对应的服务质量(Quality-of-service，QoS)要求，被归类为不同业务数据流，每个业务数据流对应于同样或相似的的QoS需求。在NR系统中，所述业务数据流对应于一个QoS流(flow)，而在LTE系统中，所述的业务数据流对应于一个EPS(Evolved Packet System，演进分组系统)承载。
业务数据会以数据包(Packet)的形式，传递到AS层，并在AS层根据其所对应的QoS flow(NR)或者EPS承载(LTE)，被进一步映射到一个无线承载(Radio Bearer)中。一个无线承载包括一个PDCP实体(PDCP协议层处理实体)，一个无线链路控制(Radio Link Control，RLC)实体(PDCP协议层处理实体)以及相应的逻辑信道(位于媒体接入控制(Media Access Control，MAC)协议层)。
当一个传递到AS层的数据包被映射到一个无线承载后，会以PDCP业务数据单元(Service Data Unit，SDU)的形式，传递到相应的PDCP实体进行处理。PDCP实体会为每个到达的PDCP SDU生成一个对应的PDCP协议数据单元(Protocol Data Unicat，PDU)，并设置一个PDCP序列号(sequence number，SN),用于表示PDCP实体中每个PDCP SDU及其相应PDCP PDU 对应的传输次序；其中，PDCP SN的取值按照PDCP SDU传递到PDCP实体的顺序设置，先到达的PDCP SDU传输次序在先、后传递的次序在后。具体地，PDCP实体会维护一个内部变量，TX_NEXT，表示PDCP实体传输的PDCP PDU的总数，用于设置PDCP SN的值；PDCP实体建立时将其初始化为0，每次一个PDCP SDU从上层(Upper layers)传递到相应PDCP实体后，PDCP实体会将该PDCP SDU对应的PDCP PDU的SN设置为TX_NEXT，并将TX NEXT加1。之后，PDCP实体会为每个PDCP SDU添加头文件，生成相应的PDCP PDU，其中包含为该PDCP PDU设置的SN值。PDCP Entity通常会按照PDCP PDU所包含的SN的顺序，将PDCP PDU按序传递给下层协议层(RLC)进行后续处理和传输。其中，SN是一个序数，表示每个PDCP SDU是第几个传输的，总体原则就是PDCP SDU到达PDCP实体越早，SN值越小，传输的越早
(2)RLC层
从PDCP实体传递到相应RLC实体的PDCP PDU，会被当作待传的RLC SDU缓存在UE的缓冲区内，并由RLC实体进行进一步处理。具体地，当某个RLC实体对应的逻辑信道被分配一定的传输资源时，RLC实体将根据所分配传输资源所能容纳的数据量，以及缓冲区内待传输的RLC SDU的数据量，确定哪些RLC SDU可以复用到所分配的传输资源中进行传输。
对于RLC实体确定的、可以完整复用到所分配传输资源的一个或多个RLC SDU，RLC实体(entity)会为这些RLC SDU分别添加对应的RLC头文件，并生成对应的RLC PDU，传递给下层协议层(MAC)进行后续的处理和传输。而在复用了上述完整的RLC PDU后，如果仍有一定资源剩余、但不足以再复用一个完整的RLC SDU(即，资源能支持的数据量小于复用下一个RLC SDU所需的数据量)，则RLC实体会进行分段处理，即为下一个待传输的RLC SDU的一部分数据添加头文件，生成RLC PDU并传递给下层协议层进行后续处理和传输。
对于这种被分段的RLC SDU，剩余部分将会仍然被保留在UE的缓冲区， 等待下次上行传输资源的到来，再行传输。
(3)MAC层和逻辑信道
每个无线承载对应的RLC实体，在MAC层进一步对应于一个逻辑信道(logical channel，LCH)。当UE被分配了一个上行传输资源的授权后(Uplink grant)，UE的MAC实体会进一步将本次上行传输的资源，在多个逻辑信道间进行分配。具体地，每个逻辑信道对应于一个逻辑信道优先级，UE的MAC实体基于逻辑信道优先处理(Logical channel prioritization,LCP)的资源分配机制，按照逻辑信道优先级由高到低的顺序为每个逻辑信道分配本次上行传输可用的传输资源，其对应于每个逻辑信道可以传输的数据量。
如上所述，基于每个逻辑信道所分配到到的传输资源，对应的RLC实体将会将一个或者多个RLC PDU传递给MAC层相应的逻辑信道。MAC层会将每个逻辑信道从RLC实体获得的这些RLC PDU作为待传输的MAC SDU，添加相应逻辑信道对应的MAC头文件，形成对应逻辑信道的MAC子PDU(subPDU)，并将其复用到整个传输资源中，作为这个逻辑信道本次上行传输所发送的数据。多个逻辑信道的MAC subPDU会被组合在一起，最终组成一个MAC PDU，作为本次上行发送的数据包，通过无线信号向网络进行传输。
需要指出的是，由于RLC实体会对RLC SDU进行分段处理(如上所述)，对于每个UE获得的上行传输资源，UE需要首先将在之前传输中被分段、且尚未传输完毕的RLC SDU的剩余部分复用到资源中进行传输，之后才能传输后续的其他RLC SDU对应的数据包。
总的来说，现有LTE和NR网络中，UE针对每个无线承载的数据，通常采用“先到达、先传输”的原则实现上述上行数据处理和传输过程。具体地，针对每个无线承载，UE在上述每个协议层会按照数据包(SDU)传递到本层对应实体的先后顺序处理数据包，并且将处理后的数据包(PDU)按序传递给下一协议层。也就是说，对于先传递到AS层的数据包，相应PDCP实体将会为其设置靠前的PDCP SN值，使其率先获得个上述各协议层的处理， 并率先复用到上行资源中进行传输；而后到达的数据包，则会被分配靠后的PDCP SN取值，通常会在在先到达数据包之后被各上述协议层处理、复用及传输。这也意味着，对于映射到每个无线承载上的数据包，UE最终执行的是按照数据包到达AS先后顺序的按序传输机制。
采用这种原则的主要是基于传输时延考虑：由于现有无线网络中，每个无线承载中数据的传输时延要求基本相同，而现有无线网络中不允许UE AS层获取每个数据包具体内容、无法执行针对每个数据包的区分处理；因此，按照数据包到达的顺序来进行数据包的上行处理、调度和传输，从尽量保证时延的角度，是现有技术中较为合理的方式。
目前无线网络可以支持用户的XR业务传输。如上所述，针对用户UE申请的XR业务，用户UE与网络之间会进行双向交互式数据传输：网络侧的应用服务器生成视频、音频等XR业务数据，并通过无线网络下行传输给UE；UE侧也需要将其生成的视频、音频等XR业务数据信息以及上述具有控制功能的控制信令和特殊数据上行发送给网络，通过这些控制信息/特殊数据，反过来控制网络侧XR业务数据的生成和传输。网络侧下行XR业务数据的生成和传输，依赖于UE侧上行控制信息是否能及时、有效地发送给网络。
如上述对现有XR业务技术介绍，现有无线网络(如NR/LTE)中，UE生成的上行XR业务会被映射到同一个业务数据流中(NR→QoS flow；LTE→EPS承载)，并进一步被映射到AS层的同一个无线承载中，不会区分哪些数据包是视频、音频等XR业务数据本身，哪些数据包是具有控制信息的特殊/重要数据。进一步，在XR对应的业务数据的数据报被传递到AS层相应无线承载后，会基于上述“先到达、先传输”方式进行数据的处理和无线传输。
然而，由于无线传输带宽有限以及无线信道质量通常很不稳定，经常会存在XR对应的无线承载中视频帧无法及时传输、需要缓存在缓冲区中等待传输的情况。这使得，当具有控制功能的控制信息和特殊数据到达AS时， 相应无线承载中很可能已经缓存了具有相当大数据量的、先到达视频数据包(视频帧)等待处理和传输。而由于每个无线承载无法对数据包进行区分，对所有数据包一律执行“先到达，先传输”的处理和传输方式，上述具有控制功能的控制信息及特殊数据包只能等到更早到达的业务数据包处理/传输完成之后才能被处理和传输，从而产生较大的上行传输时延，甚至造成这些重要数据因超时被丢弃，导致这些具有控制功能的特殊/重要数据无法及时可靠地由UE发送给网络。由于XR业务的交互式特性，这会进一步使得网络侧的应用服务器无法及时从UE获得所需的控制信息，进而导致无法及时生成并传输相应的XR业务数据给UE，造成下行XR业务发送的卡顿、延迟缓冲等后果，严重影响用户XR业务体验。
本申请实施例提供一种数据传输方法，如图2所示，由终端执行，所述方法包括：
步骤101：根据第一指示信息确定待传输数据包的优先传输顺序，所述待传输数据包为逻辑信道中的待传输的数据包；
一些实施例中，每个待传输数据包对应的第一指示信息为网络侧设备配置或预配置或协议规定的。
步骤102：MAC实体按照所述优先传输顺序，将所述待传输数据包复用到传输资源中；
一些实施例中，所述传输资源为基站分配的上行传输资源授权。
步骤103：对所述待传输数据包进行传输。
在本申请实施例中，针对每个逻辑信道中的待传输数据包，UE的MAC层根据每个待传输数据包对应的第一指示信息，确定相应的待传输数据包的复用顺序，使得同一个XR业务流中具有控制功能的控制信息和特殊数据能够先于其他普通业务数据进行处理和传输，确保这些控制信息和特殊数据不被业务数据缓冲造成的延迟传输影响，进而能够及时、可靠的从UE发送到网络侧，使得网络侧可以及时获取它们、并即时生成和传输发送给UE的下行业务数据。
本实施例基于MAC实体，在资源复用过程中，UE的MAC层针对每个逻辑信道的待传输数据包，根据每个数据包携带的特征指示信息(即第一指示信息)，识别需要优先传输的特殊数据包，并将这些数据包优先复用到传输资源中，无需改变现有PDCP协议定义的、PDCP实体对PDCP SDU的SN设置规则，使得这些需要优先传输的特殊数据包可以先于其他普通业务数据复用到传输资源中进行传输。
本实施例中，每个数据包在传递到AS的时候，需要携带其特征指示信息，使得UE相应的AS协议层能够根据其特征指示信息、识别出需要优先传输的数据包(例如，但不限于，前述XR业务中具有控制功能的控制信令数据和特殊数据)。每个数据包的特征指示信息的具体形式可以是，每个数据包对应的优先传输等级、重要性等级、传输时延需求、是否优先传输的标识，数据类型指示信息等。总体来说，UE的AS层根据这些特征指示信息，确定出每个无线承载中需要优先传输的数据包，并实现其优先处理和传输。
一些实施例中，所述第一指示信息用于指示每个所述待传输数据包的以下任一项：
优先传输等级；
重要性等级；
传输时延需求信息；
“是否优先传输”标识；
数据类型指示信息，比如第一数据类型对应需要优先传输的控制数据和特殊数据，第二数据类型对应普通业务数据；
这样通过第一指示信息可以区分出需要优先传输的数据包，所述待传输数据包根据业务类型区分为不同的数据类型，每个数据类型对应不同的优先传输等级、重要性等级或传输时延需求。
一些实施例中，所述第一指示信息与RLC SDU对应；
所述MAC实体按照所述优先传输顺序，将所述待传输数据包复用到传输资源中的步骤，具体包括：所述MAC实体按照所述优先传输顺序，将与 所述RLC SDU对应的RLC PDU复用到传输资源中。
一些实施例中，所述MAC实体按照所述优先传输顺序，将与所述RLC SDU对应的RLC PDU复用到传输资源中，包括：
在所述第一指示信息指示所述优先传输等级的情况下，按照优先传输等级由高到低将与RLC SDU对应的RLC PDU复用到传输资源中；
在所述第一指示信息指示所述重要性等级的情况下，按照重要性等级由高到低将与RLC SDU对应的RLC PDU复用到传输资源中；
在所述第一指示信息指示所述传输时延需求信息的情况下，按照传输时延需求由短到长将与RLC SDU对应的RLC PDU复用到传输资源中；
在所述第一指示信息指示所述“是否优先传输”标识的情况下，优先复用与标识为“优先传输”的RLC SDU对应的RLC PDU；
在所述第一指示信息指示所述数据类型指示信息的情况下，优先复用与数据类型为第一数据类型的RLC SDU对应的RLC PDU。
这样通过设置控制数据和特殊数据的优先传输等级、重要性等级、传输时延需求、“优先传输”标识和/或数据类型，可以实现优先传输控制数据和特殊数据。
一些实施例中，在复用与所述RLC SDU对应的RLC PDU之前，如果所述逻辑信道中存在第一RLC SDU，则优先复用与所述第一RLC SDU对应的RLC PDU；
其中，所述第一RLC SDU为曾在之前一次或若干次传输中被分段、且尚有部分剩余数据等待后续传输的RLC SDU。
一些实施例中，若所述逻辑信道对应的无线承载中存在第二RLC SDU，则所述MAC实体复用满足第一条件和第二条件的目标RLC SDU对应的RLC PDU，直至无法满足第一条件和/或第二条件为止；
其中，所述第二RLC SDU为曾在之前一次或若干次传输中被分段、且尚有部分剩余数据等待后续传输的RLC SDU；
其中，所述第一条件包括如下任一项：
所述目标RLC SDU对应的优先传输等级比所述第二RLC SDU的优先传输等级高；
所述目标RLC SDU对应的重要性等级比第二RLC SDU的重要性等级高；
所述目标RLC SDU对应的传输时延需求比第二RLC SDU的传输时延需求低；
所述目标RLC SDU被标识为“优先传输”；
所述目标RLC SDU对应的数据类型为第一数据类型，第二RLC SDU的数据类型为不同于所述第一数据类型的第二数据类型；
其中，所述第二条件包括：
能够完整复用到所述传输资源中的RLC SDU。
一些实施例中，所述若所述逻辑信道对应的无线承载中存在第二RLC SDU，则所述MAC实体复用满足第一条件和第二条件的目标RLC SDU对应的RLC PDU，直至无法满足第一条件和/或第二条件为止的步骤之后，所述方法还包括：
在传输资源仍有剩余的情况下，复用与所述第二RLC SDU对应的RLC PDU。
一些实施例中，所述在传输资源仍有剩余的情况下，复用与所述第二RLC SDU对应的RLC PDU，具体包括：
在传输资源仍有剩余的情况下，将与所述逻辑信道中剩余的RLC SDU对应的RLC PDU复用到传输资源中。
一些实施例中，所述MAC实体按照所述优先传输顺序，将与所述RLC SDU对应的RLC PDU复用到传输资源中，包括：
在所述第一指示信息指示所述优先传输等级的情况下，对于具有相同优先传输等级的RLC SDU，按照其所对应的PDCP SN的顺序进行复用或者按照预设的传输规则进行复用；
在所述第一指示信息指示所述重要性等级的情况下，对于具有相同重要性等级的RLC SDU，按照其所对应的PDCP SN的顺序进行复用或者按照预 设的传输规则进行复用；
在所述第一指示信息指示所述传输时延需求信息的情况下，对于具有相同传输时延需求的RLC SDU，按照其所对应的PDCP SN的顺序进行复用或者按照预设的传输规则进行复用；
在所述第一指示信息指示所述“是否优先传输”标识的情况下，对于多个标识“优先传输”的RLC SDU，按照其所对应的PDCP SN的顺序进行复用或者按照预设的传输规则进行复用；
在所述第一指示信息指示所述数据类型指示信息的情况下，对于多个第一数据类型的RLC SDU，按照其所对应的PDCP SN的顺序进行复用或者按照预设的传输规则进行复用。
所述传输规则通过以下任一种方式确定：由终端确定的；由网络侧设备配置的；由协议规定的。
一些实施例中，所述MAC实体按照所述优先传输顺序，将所述待传输数据包复用到传输资源中的步骤之前，所述方法还包括：
AS层实体将所述待传输数据包及对应的第一指示信息传递至PDCP实体；
所述PDCP实体为每个待传输数据包分配PDCP SN，并生成相应的PDCP PDU，传递至RLC实体；
所述RLC实体将所述PDCP PDU作为RLC SDU传递至所述MAC实体；
所述MAC实体按照所述优先传输顺序，将所述待传输数据包复用到传输资源中，对所述待传输数据包进行传输的步骤包括：
所述MAC实体按照所述RLC SDU对应的第一指示信息，将所述RLC SDU对应的RLC PDU复用到传输资源中；
所述MAC实体将所有逻辑信道复用的数据，作为逻辑信道的MAC SDU，分别添加MAC头文件组成MAC PDU，使用所述传输资源对所述MAC PDU进行上行传输。
一些实施例中，所述根据第一指示信息确定待传输数据包的优先传输顺序，所述待传输数据包为逻辑信道中的待传输的数据包的步骤之前，所述方 法还包括：
接收网络侧的第二指示信息，所述逻辑信道为所述第二指示信息指定的逻辑信道。
可选地，所述第二指示信息，可以用于是用于指示网络侧所述逻辑信道对应的PDCP实体是否支持非按序传递的数据接收方式。所谓“非按序传递”，是指如果通信接收端的PDCP实体未能能按照通信发送端的数据发送顺序进行数据接收，其无需对所接收到的数据进行重新排序，可以直接传递给上层协议栈进行处理。
一些实施例中，所述待传输数据包为XR数据包，所述第一数据类型的数据包包括以下至少一项的内容：
视频编码器生成的I帧或non-FOV帧；
传感器采集的用户行为数据；
针对下行音频和/或视频业务传输的TCP ACK信令；
RTCP ACK信令。
一些实施例中，所述待传输数据包根据业务类型区分为不同的数据类型，每个数据类型对应不同的优先传输等级、重要性等级或传输时延需求。
本发明实施例还提供了一种数据传输方法，由网络侧设备执行，如图3所示，包括：
步骤201：确定与终端对应的逻辑信道；
步骤202：向所述终端发送针对所述逻辑信道的第一指示信息，所述第一指示信息用于向所述终端指示待传输数据包的优先传输顺序。
一些实施例中，所述第一指示信息还用于指示与所述逻辑信道对应的PDCP实体支持非按序数据的传递。
一些实施例中，在所述确定与终端对应的逻辑信道的步骤之后，所述方法还包括：
向所述终端发送第二指示信息，所述逻辑信道为所述第二指示信息指定的逻辑信道。
如图4所示，现有技术中，具有控制功能的控制信息数据包/特殊数据包与普通业务数据包(视频帧、音频帧等)按序传递，不存在优先传输。但本实施例中，MAC层确定数据包的优先传输顺序，能够优先将有控制功能的控制信息数据包/特殊数据包复用到传输资源中，避免XR业务出现卡顿，保证用户的XR业务体验。
一具体实施例中，数据传输方法包括以下步骤：
步骤一、数据包传递到AS层，并作为PDCP SDU映射到到相应数据无线承载。传递数据包的同时，上层通过层间原语的方式，为AS层提供每个数据包对应的特征指示信息。特征指示信息可以是如下的某种形式：
A.每个数据包对应的优先传输等级、或重要性等级、或传输时延需求信息：其相应表示每个PDCP SDU对应的优先传输等级的高低、重要性等级的高低、传输时延要求的长短。优先传输等级高、重要性等级越高、传输时延要求越短的业务，越需要优先传输。一种可能的实现方式，是将上述具有控制功能的控制信令和特殊数包分配高优先传输等级、高重要性等级或者设置较短的传输时延需求，而将普通的数据业务设置成相对较低的优先传输等级、重要性等级或者设置较长的传输时延需求。
B.每个数据包对应的“是否优先传输”标识：可以是一个“0-1”二进制标识，用于标识每个PDCP SDU是否需要优先于相同无线承载中的其他数据包进行传输。一种可能的实现方式是，是将上述具有控制功能的控制信令和特殊数包指示为“优先传输”，而将其他普通数据包指示为“非优先传输”或者将该标识设置为缺省值。
C.每个数据包对应的数据类型指示信息，可以是“控制信息”、“特殊数据”、“普通业务数据”等数据类型，其随着每个数据包传递给AS，指示相应PDCP SDU的数据类型，而AS各协议栈根据其对应的数据类型，决定其是否需要优先传输。一种可能实现的方式，是将上述“I帧”、“non-FoV帧”、“TCP ACK”、“RTCP信令”“pose/Control”等设置为第一数据类型，其对应于上述“控制信息”或“特殊数据”，而将其他业务数据设置为第二数据类型，其对 应于“普通业务数据”或者缺省值；或者也可以直接将“I帧”、“non-FoV帧”、“TCP ACK”、“RTCP信令”“pose/Control”等作为数据类型对每个数据包进行指示。
本步骤中，AS相应协议栈基于每个PDCP SDU对应的上述特征指示信息，判断相应的PDCP PDU是否需要优先传输，并采取相应的方案对齐进行处理。
可选的，上述为每个数据包设置相应数据包特征指示信息的相关规则和配置信息，可以是基站/核心网通过RRC信令(基站)、NAS信令(核心网)、应用层信令(核心网)等无线网络控制信令配置给UE的相关协议层，或者通过预配置的方式设置在UE存储设备或者uSIM中，也可以预先定义在相关的标准协议中。UE的相关协议层，例如应用层、传输层、非接入层(non-AS，NAS)等，根据所述配置信息和规则，为所生成的每个数据包设置相应的特征指示信息。
特别地，作为上述情况A的一种可能实现方式，网络可以将不同业务区分类为不同的的数据类型，并且为每个不同数据类型设置相应的优先传输等级、传输重要性等级、传输时延需求等特征指示信息，并通过上述的信令方式配置给UE，或预配给置UE。例如，网络可以将“TCP ACK”、“RTCP信令”设置为第一数据类型，并为其配置最高的优先传输等级、重要性等级或者最短的传输时延要求；将“Pose/Control”数据、“I帧”、“non-FoV帧”等设置为第二数据类型，为其配置次高的优先传输等级、重要性等级或者次短的传输时延要求；将其他的普通业务数据设置为第三数据类型，为其配置最低的传输等级、重要性等级或最长的传输时延要求。显然，上述示例仅为一种可能的实现方式；上述方法可以有其他具体的配置和方式，本申请不做限制。
步骤二、对于每个PDCP SDU，PDCP实体为其分配PDCP SN(即，按照PDCP SDU传递到AS的顺序设置SN值)，并生成相应的PDCP PDU；然后将其传递给相应的RLC实体作为待传输的RLC SDU存入缓冲区，等待后 续处理和传输。这里，每个RLC SDU即为一个PDCP PDU，而由于每个PDCP PDU对应于唯一一个PDCP SDU，所以每个PDCP SDU携带的上述特征指示信息，也适用于对应的PDCP PDU和RLC SDU。
步骤三、当UE的MAC层获得一个上行传输资源时，MAC实体按照逻辑信道优先方式，为每个逻辑信道分配可用的传输资源。所述上行传输资源可以是基站分配的上行传输资源授权(Uplink grant)。
步骤四、针对每个逻辑信道分配到的可用传输资源，UE MAC层进一步根据上述每个PDCP PDU/RLC SDU对应的特征指示信息的不同形式，按照如下情况对每个逻辑信道所包含的待传输数据包进行复用操作：
情况A：每个数据包携带优先传输等级、重要性等级、传输时延需求等信息
-如果相应RLC实体中，存在一个曾在之前的一次或多次传输中传输中被分段、且尚有部分剩余数据等待后续传输的RLC SDU，则优先将该RLC SDU的剩余部分复用到为相应逻辑信道分配的传输资源中；之后，针对该逻辑信道缓存的其他待传输的RLC SDU，按照这些RLC SDU对应的优先传输等级由高到低、或者重要性等级由高到低、或者传输时延需求由短到长的顺序，将RLC SDU复用到剩余的传输资源中；直至传输资源使用完毕或所有数据都已被复用到资源中。
-否则，若不存在如上所述的被分段、并有部分剩余数据等待后续传输的RLC SDU，则直接针对该逻辑信道中所有的待传输RLC SDU，按照其对应的优先传输等级由高到低、或者重要性等级由高到低、或者传输时延需求由短到长的顺序，将RLC SDU对应的RLC PDU复用到传输资源中，直至传输资源使用完毕或所有数据都已被复用到资源中。
特别地，对具有相同优先传输等级或重要性等级或传输时延要求的RLC SDU，则其复用顺序可以取决于UE具体实现，不做具体规定；或者按照其所对应的PDCP SN的顺序进行复用；或者由UE随机确定这些RLC SDU的复用顺序。
情况B：每个数据包携带“是否优先传输”标识
-如果相应RLC实体中，存在一个曾在之前的一次或多次传输中传输中被分段、且尚有部分剩余数据等待后续传输的RLC SDU，则优先将该RLC SDU的剩余部分复用到为相应逻辑信道分配的传输资源中；之后，针对该逻辑信道缓存的其他待传输的RLC SDU中，优先复用那些标识为“优先传输”的那些RLC SDU，直至传输资源使用完毕或所有数据都已被复用到资源中；如果复用完这些RLC SDU后资源仍由剩余，再复用被标识为“非优先传输”或该标识设置为缺省的RLC SDU。
-否则，若不存在如上所述的被分段、并有部分剩余数据等待后续传输的RLC SDU，则直接针对该逻辑信道中所有的待传数RLC SDU，优先复用那些标识为“优先传输”的那些RLC SDU，如果资源仍由剩余，最后复用被标识为“非优先传输”或该标识设置为缺省的RLC SDU。
特别地，如果被标识为“优先传输”的RLC SDU多于一个，则其复用顺序可以取决于UE具体实现，不做具体规定；或者依照按照其所对应的PDCP SN的顺序进行复用；或者由UE随机确定这些RLC SDU的复用顺序。
情况C：每个数据包对应的数据类型指示信息
-如果相应RLC实体中，存在一个曾在之前的一次或多次传输中传输中被分段、且尚有部分剩余数据等待后续传输的RLC SDU，则优先将该RLC SDU的剩余部分复用为相应逻辑信道分配的传输资源中；之后，针对该逻辑信道缓存的其他待传输的RLC SDU中，优先复用那些被指示为第一数据类型(如“控制信息”、“特殊数据”、“I帧”、“non-FoV帧”、“TCP ACK”、“RTCP信令”、“pose/Control”等具有特殊数据类型)的RLC SDU，直至传输资源使用完毕或所有数据都已被复用到资源中；如果复用完这些RLC SDU后资源仍由剩余，再复用被指示为第二数据类型(如“普通业务数据”)或该数据类型指示设置为缺省的RLC SDU。
-否则，若不存在如上所述的被分段、并有部分剩余数据等待后续传输的RLC SDU，优先复用那些被指示为第一数据类型(如，“控制信息”、“特 殊数据”、“I帧”、“non-FoV帧”、“TCP ACK”、“RTCP信令”、“pose/Control”等具有特殊数据类型)的RLC SDU；如果复用完这些RLC SDU后资源仍由剩余，再复用被指示为第二数据类型(如“普通业务数据”)或该该数据类型指示设置为缺省的RLC SDU。
特别地，如果上述被指示为第一数据类型的RLC SDU多于一个，则在这些数据之间进一步的复用顺序可以取决于UE具体实现，不做具体规定；或者按照其所对应的PDCP SN的顺序进行复用；或者由UE随机确定这些RLC SDU的顺序。或者UE可以通过一些规则，在AS协议层对这些特殊数据类型的PDCP PDU进行进一步的优先传输等级排序，例如：“pose/Control”数据优先传输等级最高，“TCP ACK/RTCP信令”次高，“I帧/non-FoV帧”再次等等。该规则可以由基站通过RRC信令配置，或者由标准协议予以定义。
另外，可选地，上述各种特征指示信息与一个PDCP PDU/RLC SDU相对应，而又由于一个PDCP PDU/RLC SDU可以对应于某个PDCP SDU或RLC PDU，因此所述的特征指示信息对应于一个PDCP SDU/RLC PDU。
步骤五、针对每个逻辑信道执行上述步骤四中的操作之后，MAC实体将所有逻辑信道复用的数据，作为相应各自逻辑信道的MAC SDU，分别添加MAC头文件，进一步组成MAC PDU，使用所述上行资源，进行上行传输。
从网络侧，基站可以为UE的每个无线承载配置“是否优先传输”的指示信息。针对每个无线承载，UE判断该无线承载是否允许执行步骤四中的操作：如果相应指示信息设置为“允许优先传输”，则执行上述步骤四中的逻辑信道复用操作；否则，UE将按照现有技术，执行按照SN顺序的按序复用机制。
另一具体实施例中，数据传输方法包括以下步骤：
步骤一、数据包传递到AS层，并作为PDCP SDU映射到到相应数据无线承载。数据包传递数据包的同时，上层通过层间原语的方式，为AS层提供每个数据包对应的特征指示信息。特征指示信息可以是如下的某种形式：
A.每个数据包对应的优先传输等级、或重要性等级、或传输时延需求信 息：其相应表示每个PDCP SDU对应的优先传输等级的高低、重要性等级的高低、传输时延要求的长短。优先传输等级高、重要性等级越高、传输时延要求越短的业务，越需要优先传输。一种可能的实现方式，是将上述具有控制功能的控制信令和特殊数包分配高优先传输等级、高重要性等级或者设置较短的传输时延需求，而将普通的数据业务设置成相对较低的优先传输等级、重要性等级或者设置较长的传输时延需求。
B.每个数据包对应的“是否优先传输”标识：可以是一个“0-1”二进制标识，用于标识每个PDCP SDU是否需要优先于相同无线承载中的其他数据包进行传输。一种可能的实现方式是，是将上述具有控制功能的控制信令和特殊数包指示为“优先传输”，而将其他普通数据包指示为“非优先传输”或者将该标识设置为缺省值。
C.每个数据包对应的数据类型指示信息，可以是“控制信息”、“特殊数据”、“普通业务数据”等数据类型，其随着每个数据包传递给AS，指示相应PDCP SDU的数据类型，而AS各协议栈根据其对应的数据类型，决定其是否需要优先传输。一种可能实现的方式，是将上述“I帧”、“non-FoV帧”、“TCP ACK”、“RTCP信令”“pose/Control”等设置为第一数据类型，其对应于上述“控制信息”或“特殊数据”，而将其他业务数据设置为第二数据类型，其对应于“普通业务数据”或者缺省值；或者也可以直接将“I帧”、“non-FoV帧”、“TCP ACK”、“RTCP信令”“pose/Control”等作为数据类型对每个数据包进行指示。
本步骤中，AS相应协议栈基于每个PDCP SDU对应的上述特征指示信息，判断相应的PDCP PDU是否需要优先传输，并采取相应的方案对齐进行处理。
可选的，上述为每个数据包设置相应数据包特征指示信息的相关规则和配置信息，可以是基站/核心网通过RRC信令(基站)、NAS信令(核心网)、应用层信令(核心网)等无线网络控制信令配置给UE的相关协议层，或者通过预配置的方式设置在UE存储设备或者uSIM中，也可以预先定义在相关 的标准协议中。UE的相关协议层，例如应用层、传输层、非接入层(non-AS，NAS)等，根据所述配置信息和规则，为所生成的每个数据包设置相应的特征指示信息。
特别地，作为上述情况A的一种可能实现方式，网络可以将不同业务区分类为不同的的数据类型，并且为每个不同数据类型设置相应的优先传输等级、传输重要性等级、传输时延需求等特征指示信息，并通过上述的信令方式配置给UE，或预配给置UE。例如，网络可以将“TCP ACK”、“RTCP信令”设置为第一数据类型，并为其配置最高的优先传输等级、重要性等级或者最短的传输时延要求；将“Pose/Control”数据、“I帧”、“non-FoV帧”等设置为第二数据类型，为其配置次高的优先传输等级、重要性等级或者次短的传输时延要求；将其他的普通业务数据设置为第三数据类型，为其配置最低的传输等级、重要性等级或最长的传输时延要求。显然，上述示例仅为一种可能的实现方式；上述方法可以有其他具体的配置和方式，本申请不做限制。
步骤二、对于每个PDCP SDU，PDCP实体为其分配PDCP SN(即，按照PDCP SDU传递到AS的顺序设置SN值)，并生成相应的PDCP PDU；然后将其传递给相应的RLC实体作为待传输的RLC SDU存入缓冲区，等待后续处理和传输。这里，每个RLC SDU即为一个PDCP PDU，而由于每个PDCP PDU对应于唯一一个PDCP SDU，所以每个PDCP SDU携带的上述特征指示信息，也适用于对应的PDCP PDU和RLC SDU。
步骤三、当UE的MAC层获得一个上行传输资源时，MAC实体按照逻辑信道优先方式，为每个逻辑信道分配可用的传输资源。所述上行传输资源可以是基站分配的上行传输资源授权(Uplink grant)。
步骤四、针对每个逻辑信道分配到的可用传输资源，UE MAC层进一步根据上述每个PDCP PDU/RLC SDU对应的特征指示信息的不同形式，按照如下情况对每个逻辑信道所包含的待传输数据包进行复用操作：
针对情况A：
如果相应无线承载中当前存在优先传输等级、或重要性等级、或者传输时延要求比该RLC SDU高的RLC SDU，则在这些RLC SDU中，优先复用那些能够完整复用到所述传输资源中的RLC SDU，直到无法再完整复用下一个这种优先传输等级/重要行更高或传输时延要求更短的RLC SDU为止(即不允许对这些RLC SDU进行分段处理)；在复用完这些优先传输等级/重要性等级更高，或者延时要求更短的RLC SDU后，如果仍有剩余资源，则进一步复用上述“曾在之前一次或若干次传输中被分段、且尚有部分剩余数据等待后续传输的RLC SDU”的RLC SDU对应的数据。
如果不存在这种优先传输等级、或重要性等级、或者传输时延要求比该RLC SDU高的RLC SDU，则直接针对该逻辑信道中所有的待传输RLC SDU，按照其对应的优先传输等级由高到低、或者重要性等级由高到低、或者传输时延等级由短到长的顺序，将RLC SDU对应的RLC PDU复用到传输资源中，直至传输资源使用完毕或所有数据都已被复用到资源中。
针对情况B：
如果该RLC SDU是被标识为“非优先传输”或该标识设置为缺省值的RLC SDU，并且当前存在其他被标识为“优先传输”的RLC SDU，则在这些标识为“优先传输”的RLC SDU的中，优先复用那些能够完整复用到所述传输资源中的RLC SDU，直到无法再完整复用下一个这种标识为“优先传输”的RLC SDU为止(即不允许对这些RLC SDU进行分段处理)；在复用完这些优先传输等级/重要性等级更高，或者延时要求更短的RLC SDU后，如果仍有剩余资源，则进一步复用上述“曾经被分段、且尚有一部分剩余数据未完成传输”的RLC SDU对应的数据。
如果除该RLC SDU之外、当前不存在其他被标识为“优先传输”的RLC SDU，则首先复用上述“曾经被分段、且尚有一部分剩余数据未完成传输”的RLC SDU，之后根据RLC SDU的SN取值按序复用RLC SDU。
针对情况C：
如果该RLC SDU是被指示为第二数据类型(如“普通业务数据”类型) 或该指示设置为缺省值的RLC SDU，并且当前存在其他被指示为第一数据类型(如“控制信息”、“特殊数据”、“I帧”、“non-FoV帧”、“TCP ACK”、“RTCP信令”、“pose/Control”等具有特殊数据类型)的RLC SDU，则在这些标识为第一数据类型的RLC SDU的中，优先复用那些能够完整复用到所述传输资源中的RLC SDU，直到无法再完整复用下一个这种被指示为第一数据类型的RLC SDU为止(即不允许对这些RLC SDU进行分段处理)；在复用完这些特殊数据类型的RLC SDU后，如果仍有剩余资源，则进一步复用上述“曾经被分段、且尚有一部分剩余数据未完成传输”的RLC SDU对应的数据。
如果除该RLC SDU之外、当前不存在其他被指示为上述第一数据类型的RLC SDU，则首先复用上述“曾经被分段、且尚有一部分剩余数据未完成传输”RLC SDU，之后根据RLC SDU的SN取值按序复用RLC SDU。
上述操作中，如果存在多个优先传输等级、重要性等级、传输时延要求相同的的RLC SDU(情况A)，或者多个被标识为“优先传输”的RLC SDU(情况B)，或者多个被标识为第一数据类型(如“控制信息”、“特殊数据”、“I帧”、“non-FoV帧”、“TCP ACK”、“RTCP信令”、“pose/Control”等具有特殊数据类型)的RLC SDU(情况C)，则在这些数据包之间进一步的复用顺序可以取决于UE具体实现，不做具体规定；或者按照其所对应的PDCP SN的顺序进行复用；或者由UE随机确定这些RLC SDU的顺序。或者UE可以通过一些规则，在AS协议层对这些特殊数据类型的PDCP PDU进行进一步的优先传输等级排序，例如：“pose/Control”数据优先传输等级最高，“TCP ACK/RTCP信令”次高，“I帧/non-FoV帧”再次等等。该规则可以由基站通过RRC信令配置，或者由标准协议予以定义。
如果相应RLC实体中不存在“在之前的一次或多次传输中传输中被分段、且尚有剩余部分等待后续传输RLC SDU，则复用方式与上一实施例中的情况A、B、C的相应处理方式相同。此处不再赘述。步骤五、针对每个逻辑信道执行上述步骤四中的操作之后，MAC实体将所有逻辑信道复用的数据，作为相应各自逻辑信道的MAC SDU，分别添加MAC头文件，进一步组成 MAC PDU，使用所述上行资源，进行上行传输。
需要说明的是，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，或者该数据传输装置中的用于执行加载数据传输方法的模块。本申请实施例中以数据传输装置执行加载数据传输方法为例，说明本申请实施例提供的数据传输方法。
本申请实施例提供了一种数据传输装置300，应用于终端，如图5所示，所述装置包括：
处理模块310，用于根据第一指示信息确定待传输数据包的优先传输顺序，所述待传输数据包为逻辑信道中的待传输的数据包；
复用模块320，用于按照所述优先传输顺序，将所述待传输数据包复用到传输资源中；
传输模块330，用于对所述待传输数据包进行传输。
在本申请实施例中，针对每个逻辑信道中的待传输数据包，UE的MAC层根据每个待传输数据包对应的第一指示信息，确定相应的待传输数据包的复用顺序，使得同一个XR业务流中具有控制功能的控制信息和特殊数据能够先于其他普通业务数据进行处理和传输，确保这些控制信息和特殊数据不被业务数据缓冲造成的延迟传输影响，进而能够及时、可靠的从UE发送到网络侧，使得网络侧可以及时获取它们、并即时生成和传输发送给UE的下行业务数据。
一些实施例中，所述第一指示信息用于指示每个所述待传输数据包的以下任一项：
优先传输等级；
重要性等级；
传输时延需求信息；
“是否优先传输”标识；
数据类型指示信息。
一些实施例中，所述第一指示信息与RLC SDU对应；
所述复用模块具体用于按照所述优先传输顺序，将与所述RLC SDU对应的RLC PDU复用到传输资源中。
一些实施例中，所述复用模块具体用于：
在所述第一指示信息指示所述优先传输等级的情况下，按照优先传输等级由高到低将与RLC SDU对应的RLC PDU复用到传输资源中；
在所述第一指示信息指示所述重要性等级的情况下，按照重要性等级由高到低将与RLC SDU对应的RLC PDU复用到传输资源中；
在所述第一指示信息指示所述传输时延需求信息的情况下，按照传输时延需求由短到长将与RLC SDU对应的RLC PDU复用到传输资源中；
在所述第一指示信息指示所述“是否优先传输”标识的情况下，优先复用与标识为“优先传输”的RLC SDU对应的RLC PDU；
在所述第一指示信息指示所述数据类型指示信息的情况下，优先复用与数据类型为第一数据类型的RLC SDU对应的RLC PDU。
一些实施例中，所述复用模块具体用于在复用与所述RLC SDU对应的RLC PDU之前，如果所述逻辑信道中存在第一RLC SDU，则优先复用与所述第一RLC SDU对应的RLC PDU；
其中，所述第一RLC SDU为曾在之前一次或若干次传输中被分段、且尚有部分剩余数据等待后续传输的RLC SDU。
一些实施例中，若所述逻辑信道对应的无线承载中存在第二RLC SDU，所述复用模块具体用于复用满足第一条件和第二条件的目标RLC SDU对应的RLC PDU，直至无法满足第一条件和/或第二条件为止；
其中，所述第二RLC SDU为曾在之前一次或若干次传输中被分段、且尚有部分剩余数据等待后续传输的RLC SDU；
其中，所述第一条件包括如下任一项：
所述目标RLC SDU对应的优先传输等级比所述第二RLC SDU的优先传输等级高；
所述目标RLC SDU对应的重要性等级比第二RLC SDU的重要性等级高；
所述目标RLC SDU对应的传输时延需求比第二RLC SDU的传输时延需求低；
所述目标RLC SDU被标识为“优先传输”；
所述目标RLC SDU对应的数据类型为第一数据类型，第二RLC SDU的数据类型为不同于所述第一数据类型的第二数据类型；
其中，所述第二条件包括：
能够完整复用到所述传输资源中的RLC SDU。
一些实施例中，在传输资源仍有剩余的情况下，所述复用模块具体用于复用与所述第二RLC SDU对应的RLC PDU。
一些实施例中，在传输资源仍有剩余的情况下，所述复用模块具体用于将与所述逻辑信道中剩余的RLC SDU对应的RLC PDU复用到传输资源中。
一些实施例中，所述复用模块具体用于：
在所述第一指示信息指示所述优先传输等级的情况下，对于具有相同优先传输等级的RLC SDU，按照其所对应的PDCP SN的顺序进行复用或者按照预设的传输规则进行复用；
在所述第一指示信息指示所述重要性等级的情况下，对于具有相同重要性等级的RLC SDU，按照其所对应的PDCP SN的顺序进行复用或者按照预设的传输规则进行复用；
在所述第一指示信息指示所述传输时延需求信息的情况下，对于具有相同传输时延需求的RLC SDU，按照其所对应的PDCP SN的顺序进行复用或者按照预设的传输规则进行复用；
在所述第一指示信息指示所述“是否优先传输”标识的情况下，对于多个标识“优先传输”的RLC SDU，按照其所对应的PDCP SN的顺序进行复用或者按照预设的传输规则进行复用；
在所述第一指示信息指示所述数据类型指示信息的情况下，对于多个第一数据类型的RLC SDU，按照其所对应的PDCP SN的顺序进行复用或者按照预设的传输规则进行复用。
一些实施例中，所述传输规则通过以下任一种方式确定：由终端确定的；由网络侧设备配置的；由协议规定的。
一些实施例中，还包括：
接收模块，用于接收网络侧的第二指示信息，所述逻辑信道为所述第二指示信息指定的逻辑信道。
一些实施例中，所述待传输数据包为XR数据包，所述第一数据类型的数据包包括以下至少一项的内容：
视频编码器生成的I帧或non-FOV帧；
传感器采集的用户行为数据；
针对下行音频和/或视频业务传输的TCP ACK信令；
RTCP ACK信令。
一些实施例中，所述第一指示信息通过以下任一种方式确定：由网络侧设备配置；预配置；由协议规定。
一些实施例中，所述待传输数据包根据业务类型区分为不同的数据类型，每个数据类型对应不同的优先传输等级、重要性等级或传输时延需求。
一些实施例中，所述传输资源为基站分配的上行传输资源授权。
本申请实施例中的数据传输装置可以是装置，具有操作系统的装置或电子设备，也可以是终端中的部件、集成电路、或芯片。该装置或电子设备可以是移动终端，也可以为非移动终端。示例性的，移动终端可以包括但不限于上述所列举的终端11的类型，非移动终端可以为服务器、网络附属存储器(Network Attached Storage，NAS)、个人计算机(personal computer，PC)、电视机(television，TV)、柜员机或者自助机等，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2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。
本申请实施例提供了一种数据传输装置400，应用于网络侧设备，如图6所示，所述装置包括：
确定模块410，用于确定与终端对应的逻辑信道；
发送模块420，用于向所述终端发送针对所述逻辑信道的第一指示信息，所述第一指示信息用于向所述终端指示待传输数据包的优先传输顺序。
一些实施例中，所述第一指示信息还用于指示与所述逻辑信道对应的PDCP实体支持非按序数据的传递。
一些实施例中，所述发送模块还用于向所述终端发送第二指示信息，所述逻辑信道为所述第二指示信息指定的逻辑信道。
可选的，如图7所示，本申请实施例还提供一种通信设备500，包括处理器501，存储器502，存储在存储器502上并可在所述处理器501上运行的程序或指令，例如，该通信设备500为终端时，该程序或指令被处理器501执行时实现上述应用于终端的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。该通信设备500为网络侧设备时，该程序或指令被处理器501执行时实现上述应用于网络侧设备的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。
本申请实施例还提供一种终端，包括处理器和通信接口，处理器用于根据第一指示信息确定待传输数据包的优先传输顺序，所述待传输数据包为逻辑信道中的待传输的数据包；MAC实体按照所述优先传输顺序，将所述待传输数据包复用到传输资源中；对所述待传输数据包进行传输。该终端实施例是与上述终端侧方法实施例对应的，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8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1000包括但不限于：射频单元1001、网络模块1002、音频输出单元1003、输入单元1004、传感器1005、显示单元1006、用户输入单元1007、接口单元1008、存储器1009、以及处理器1010等中的至少部分部件。
本领域技术人员可以理解，终端1000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1010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8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1004可以包括图形处理器(Graphics Processing Unit，GPU)10041和麦克风10042，图形处理器10041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1006可包括显示面板10061，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10061。用户输入单元1007包括触控面板10071以及其他输入设备10072。触控面板10071，也称为触摸屏。触控面板10071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10072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1001将来自网络侧设备的下行数据接收后，给处理器1010处理；另外，将上行的数据发送给网络侧设备。通常，射频单元1001包括但不限于天线、至少一个放大器、收发信机、耦合器、低噪声放大器、双工器等。
存储器1009可用于存储软件程序或指令以及各种数据。存储器1009可主要包括存储程序或指令区和存储数据区，其中，存储程序或指令区可存储操作系统、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1009可以包括高速随机存取存储器，还可以包括非易失性存储器，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。例如至少一个磁盘存储器件、闪存器件、或其他非易失性固态存储器件。
处理器1010可包括一个或多个处理单元；可选的，处理器1010可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操作系统、用户界面和应用程序或指令等，调制解调处理器主要处理无线通信，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1010中。
其中，处理器1010，用于根据第一指示信息确定待传输数据包的优先传输顺序，所述待传输数据包为逻辑信道中的待传输的数据包；MAC实体按照所述优先传输顺序，将所述待传输数据包复用到传输资源中；对所述待传输数据包进行传输。
一些实施例中，所述第一指示信息用于指示每个所述待传输数据包的以下任一项：
优先传输等级；
重要性等级；
传输时延需求信息；
“是否优先传输”标识；
数据类型指示信息。
一些实施例中，所述第一指示信息与RLC SDU对应；
处理器1010，用于按照所述优先传输顺序，将与所述RLC SDU对应的RLC PDU复用到传输资源中。
一些实施例中，处理器1010，用于：
在所述第一指示信息指示所述优先传输等级的情况下，按照优先传输等级由高到低将与RLC SDU对应的RLC PDU复用到传输资源中；
在所述第一指示信息指示所述重要性等级的情况下，按照重要性等级由高到低将与RLC SDU对应的RLC PDU复用到传输资源中；
在所述第一指示信息指示所述传输时延需求信息的情况下，按照传输时延需求由短到长将与RLC SDU对应的RLC PDU复用到传输资源中；
在所述第一指示信息指示所述“是否优先传输”标识的情况下，优先复用与标识为“优先传输”的RLC SDU对应的RLC PDU；
在所述第一指示信息指示所述数据类型指示信息的情况下，优先复用与数据类型为第一数据类型的RLC SDU对应的RLC PDU。
一些实施例中，处理器1010，用于在复用与所述RLC SDU对应的RLC  PDU之前，如果所述逻辑信道中存在第一RLC SDU，则优先复用与所述第一RLC SDU对应的RLC PDU；
其中，所述第一RLC SDU为曾在之前一次或若干次传输中被分段、且尚有部分剩余数据等待后续传输的RLC SDU。
一些实施例中，若所述逻辑信道对应的无线承载中存在第二RLC SDU，则处理器1010，用于复用满足第一条件和第二条件的目标RLC SDU对应的RLC PDU，直至无法满足第一条件和/或第二条件为止；
其中，所述第二RLC SDU为曾在之前一次或若干次传输中被分段、且尚有部分剩余数据等待后续传输的RLC SDU；
其中，所述第一条件包括如下任一项：
所述目标RLC SDU对应的优先传输等级比所述第二RLC SDU的优先传输等级高；
所述目标RLC SDU对应的重要性等级比第二RLC SDU的重要性等级高；
所述目标RLC SDU对应的传输时延需求比第二RLC SDU的传输时延需求低；
所述目标RLC SDU被标识为“优先传输”；
所述目标RLC SDU对应的数据类型为第一数据类型，第二RLC SDU的数据类型为不同于所述第一数据类型的第二数据类型；
其中，所述第二条件包括：
能够完整复用到所述传输资源中的RLC SDU。
一些实施例中，处理器1010，用于在传输资源仍有剩余的情况下，复用与所述第二RLC SDU对应的RLC PDU。
一些实施例中，处理器1010，用于在传输资源仍有剩余的情况下，将与所述逻辑信道中剩余的RLC SDU对应的RLC PDU复用到传输资源中。
一些实施例中，处理器1010，用于执行：
在所述第一指示信息指示所述优先传输等级的情况下，对于具有相同优先传输等级的RLC SDU，按照其所对应的PDCP SN的顺序进行复用或者按 照预设的传输规则进行复用；
在所述第一指示信息指示所述重要性等级的情况下，对于具有相同重要性等级的RLC SDU，按照其所对应的PDCP SN的顺序进行复用或者按照预设的传输规则进行复用；
在所述第一指示信息指示所述传输时延需求信息的情况下，对于具有相同传输时延需求的RLC SDU，按照其所对应的PDCP SN的顺序进行复用或者按照预设的传输规则进行复用；
在所述第一指示信息指示所述“是否优先传输”标识的情况下，对于多个标识“优先传输”的RLC SDU，按照其所对应的PDCP SN的顺序进行复用或者按照预设的传输规则进行复用；
在所述第一指示信息指示所述数据类型指示信息的情况下，对于多个第一数据类型的RLC SDU，按照其所对应的PDCP SN的顺序进行复用或者按照预设的传输规则进行复用。
一些实施例中，所述传输规则通过以下任一种方式确定：由终端确定的；由网络侧设备配置的；由协议规定的。
一些实施例中，处理器1010，用于接收网络侧的第二指示信息，所述逻辑信道为所述第二指示信息指定的逻辑信道。
一些实施例中，所述待传输数据包为XR数据包，所述第一数据类型的数据包包括以下至少一项的内容：
视频编码器生成的I帧或non-FOV帧；
传感器采集的用户行为数据；
针对下行音频和/或视频业务传输的TCP ACK信令；
RTCP ACK信令。
一些实施例中，所述第一指示信息通过以下任一种方式确定：由网络侧设备配置；预配置；由协议规定。
一些实施例中，所述待传输数据包根据业务类型区分为不同的数据类型，每个数据类型对应不同的优先传输等级、重要性等级或传输时延需求。
一些实施例中，所述传输资源为基站分配的上行传输资源授权。
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，处理器用于确定与终端对应的逻辑信道；向所述终端发送针对所述逻辑信道的第一指示信息，所述第一指示信息用于向所述终端指示待传输数据包的优先传输顺序。
具体地，本申请实施例还提供了一种网络侧设备。如图9所示，该网络设备700包括：天线71、射频装置72、基带装置73。天线71与射频装置72连接。在上行方向上，射频装置72通过天线71接收信息，将接收的信息发送给基带装置73进行处理。在下行方向上，基带装置73对要发送的信息进行处理，并发送给射频装置72，射频装置72对收到的信息进行处理后经过天线71发送出去。
上述频带处理装置可以位于基带装置73中，以上实施例中网络侧设备执行的方法可以在基带装置73中实现，该基带装置73包括处理器74和存储器75。
基带装置73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9所示，其中一个芯片例如为处理器74，与存储器75连接，以调用存储器75中的程序，执行以上方法实施例中所示的网络设备操作。
该基带装置73还可以包括网络接口76，用于与射频装置72交互信息，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还包括：存储在存储器75上并可在处理器74上运行的指令或程序，处理器74调用存储器75中的指令或程序执行图6所示各模块执行的方法，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(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，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/程序产品被存储在非易失的存储介质中，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。
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 (43)

  1. 一种数据传输方法，由终端执行，所述方法包括：
    根据第一指示信息确定待传输数据包的优先传输顺序，所述待传输数据包为逻辑信道中的待传输的数据包；
    MAC实体按照所述优先传输顺序，将所述待传输数据包复用到传输资源中；
    对所述待传输数据包进行传输。
  2. 根据权利要求1所述的数据传输方法，其中，所述第一指示信息用于指示每个所述待传输数据包的以下任一项：
    优先传输等级；
    重要性等级；
    传输时延需求信息；
    “是否优先传输”标识；
    数据类型指示信息。
  3. 根据权利要求2所述的数据传输方法，其中，所述第一指示信息与RLC SDU对应；
    所述MAC实体按照所述优先传输顺序，将所述待传输数据包复用到传输资源中的步骤，具体包括：所述MAC实体按照所述优先传输顺序，将与所述RLC SDU对应的RLC PDU复用到传输资源中。
  4. 根据权利要求3所述的方法，其中，所述MAC实体按照所述优先传输顺序，将与所述RLC SDU对应的RLC PDU复用到传输资源中，包括：
    在所述第一指示信息指示所述优先传输等级的情况下，按照优先传输等级由高到低将与RLC SDU对应的RLC PDU复用到传输资源中；
    在所述第一指示信息指示所述重要性等级的情况下，按照重要性等级由高到低将与RLC SDU对应的RLC PDU复用到传输资源中；
    在所述第一指示信息指示所述传输时延需求信息的情况下，按照传输时 延需求由短到长将与RLC SDU对应的RLC PDU复用到传输资源中；
    在所述第一指示信息指示所述“是否优先传输”标识的情况下，优先复用与标识为“优先传输”的RLC SDU对应的RLC PDU；
    在所述第一指示信息指示所述数据类型指示信息的情况下，优先复用与数据类型为第一数据类型的RLC SDU对应的RLC PDU。
  5. 根据权利要求4所述的数据传输方法，其中，在复用与所述RLC SDU对应的RLC PDU之前，如果所述逻辑信道中存在第一RLC SDU，则优先复用与所述第一RLC SDU对应的RLC PDU；
    其中，所述第一RLC SDU为曾在之前一次或若干次传输中被分段、且尚有部分剩余数据等待后续传输的RLC SDU。
  6. 根据权利要求4所述的数据传输方法，其中，若所述逻辑信道对应的无线承载中存在第二RLC SDU，则所述MAC实体复用满足第一条件和第二条件的目标RLC SDU对应的RLC PDU，直至无法满足第一条件和/或第二条件为止；
    其中，所述第二RLC SDU为曾在之前一次或若干次传输中被分段、且尚有部分剩余数据等待后续传输的RLC SDU；
    其中，所述第一条件包括如下任一项：
    所述目标RLC SDU对应的优先传输等级比所述第二RLC SDU的优先传输等级高；
    所述目标RLC SDU对应的重要性等级比第二RLC SDU的重要性等级高；
    所述目标RLC SDU对应的传输时延需求比第二RLC SDU的传输时延需求低；
    所述目标RLC SDU被标识为“优先传输”；
    所述目标RLC SDU对应的数据类型为第一数据类型，第二RLC SDU的数据类型为不同于所述第一数据类型的第二数据类型；
    其中，所述第二条件包括：
    能够完整复用到所述传输资源中的RLC SDU。
  7. 根据权利要求6所述的数据传输方法，其中，所述若所述逻辑信道对应的无线承载中存在第二RLC SDU，则所述MAC实体复用满足第一条件和第二条件的目标RLC SDU对应的RLC PDU，直至无法满足第一条件和/或第二条件为止的步骤之后，所述方法还包括：
    在传输资源仍有剩余的情况下，复用与所述第二RLC SDU对应的RLC PDU。
  8. 根据权利要求7所述的数据传输方法，其中，所述在传输资源仍有剩余的情况下，复用与所述第二RLC SDU对应的RLC PDU，具体包括：
    在传输资源仍有剩余的情况下，将与所述逻辑信道中剩余的RLC SDU对应的RLC PDU复用到传输资源中。
  9. 根据权利要求3-8中任一项所述的数据传输方法，其中，所述MAC实体按照所述优先传输顺序，将与所述RLC SDU对应的RLC PDU复用到传输资源中，包括：
    在所述第一指示信息指示所述优先传输等级的情况下，对于具有相同优先传输等级的RLC SDU，按照其所对应的PDCP SN的顺序进行复用或者按照预设的传输规则进行复用；
    在所述第一指示信息指示所述重要性等级的情况下，对于具有相同重要性等级的RLC SDU，按照其所对应的PDCP SN的顺序进行复用或者按照预设的传输规则进行复用；
    在所述第一指示信息指示所述传输时延需求信息的情况下，对于具有相同传输时延需求的RLC SDU，按照其所对应的PDCP SN的顺序进行复用或者按照预设的传输规则进行复用；
    在所述第一指示信息指示所述“是否优先传输”标识的情况下，对于多个标识“优先传输”的RLC SDU，按照其所对应的PDCP SN的顺序进行复用或者按照预设的传输规则进行复用；
    在所述第一指示信息指示所述数据类型指示信息的情况下，对于多个第一数据类型的RLC SDU，按照其所对应的PDCP SN的顺序进行复用或者按 照预设的传输规则进行复用。
  10. 根据权利要求9所述的数据传输方法，其中，所述传输规则通过以下任一种方式确定：由终端确定的；由网络侧设备配置的；由协议规定的。
  11. 根据权利要求1所述的数据传输方法，其中，所述MAC实体按照所述优先传输顺序，将所述待传输数据包复用到传输资源中的步骤之前，所述方法还包括：
    AS层实体将所述待传输数据包及对应的第一指示信息传递至PDCP实体；
    所述PDCP实体为每个待传输数据包分配PDCP SN，并生成相应的PDCP PDU，传递至RLC实体；
    所述RLC实体将所述PDCP PDU作为RLC SDU传递至所述MAC实体；
    所述MAC实体按照所述优先传输顺序，将所述待传输数据包复用到传输资源中，对所述待传输数据包进行传输的步骤包括：
    所述MAC实体按照所述RLC SDU对应的第一指示信息，将所述RLC SDU对应的RLC PDU复用到传输资源中；
    所述MAC实体将所有逻辑信道复用的数据，作为逻辑信道的MAC SDU，分别添加MAC头文件组成MAC PDU，使用所述传输资源对所述MAC PDU进行上行传输。
  12. 根据权利要求1-8中任一项所述的数据传输方法，其中，所述根据第一指示信息确定待传输数据包的优先传输顺序，所述待传输数据包为逻辑信道中的待传输的数据包的步骤之前，所述方法还包括：
    接收网络侧的第二指示信息，所述逻辑信道为所述第二指示信息指定的逻辑信道。
  13. 根据权利要求4-8中任一项所述的数据传输方法，其中，所述待传输数据包为XR数据包，所述第一数据类型的数据包包括以下至少一项的内容：
    视频编码器生成的I帧或non-FOV帧；
    传感器采集的用户行为数据；
    针对下行音频和/或视频业务传输的TCP ACK信令；
    RTCP ACK信令。
  14. 根据权利要求1-8中任一项所述的数据传输方法，其中，
    所述第一指示信息通过以下任一种方式确定：由网络侧设备配置；预配置；由协议规定。
  15. 根据权利要求2所述的数据传输方法，其中，
    所述待传输数据包根据业务类型区分为不同的数据类型，每个数据类型对应不同的优先传输等级、重要性等级或传输时延需求。
  16. 根据权利要求1所述的数据传输方法，其中，所述传输资源为基站分配的上行传输资源授权。
  17. 一种数据传输方法，由网络侧设备执行，包括：
    确定与终端对应的逻辑信道；
    向所述终端发送针对所述逻辑信道的第一指示信息，所述第一指示信息用于向所述终端指示待传输数据包的优先传输顺序。
  18. 根据权利要求17所述的数据传输方法，其中，所述第一指示信息还用于指示与所述逻辑信道对应的PDCP实体支持非按序数据的传递。
  19. 根据权利要求17所述的数据传输方法，其中，在所述确定与终端对应的逻辑信道的步骤之后，所述方法还包括：
    向所述终端发送第二指示信息，所述逻辑信道为所述第二指示信息指定的逻辑信道。
  20. 一种数据传输装置，应用于终端，所述装置包括：
    处理模块，用于根据第一指示信息确定待传输数据包的优先传输顺序，所述待传输数据包为逻辑信道中的待传输的数据包；
    复用模块，用于按照所述优先传输顺序，将所述待传输数据包复用到传输资源中；
    传输模块，用于对所述待传输数据包进行传输。
  21. 根据权利要求20所述的数据传输装置，其中，所述第一指示信息用 于指示每个所述待传输数据包的以下任一项：
    优先传输等级；
    重要性等级；
    传输时延需求信息；
    “是否优先传输”标识；
    数据类型指示信息。
  22. 根据权利要求21所述的数据传输装置，其中，所述第一指示信息与RLC SDU对应；
    所述复用模块具体用于按照所述优先传输顺序，将与所述RLC SDU对应的RLC PDU复用到传输资源中。
  23. 根据权利要求22所述的数据传输装置，其中，所述复用模块具体用于：
    在所述第一指示信息指示所述优先传输等级的情况下，按照优先传输等级由高到低将与RLC SDU对应的RLC PDU复用到传输资源中；
    在所述第一指示信息指示所述重要性等级的情况下，按照重要性等级由高到低将与RLC SDU对应的RLC PDU复用到传输资源中；
    在所述第一指示信息指示所述传输时延需求信息的情况下，按照传输时延需求由短到长将与RLC SDU对应的RLC PDU复用到传输资源中；
    在所述第一指示信息指示所述“是否优先传输”标识的情况下，优先复用与标识为“优先传输”的RLC SDU对应的RLC PDU；
    在所述第一指示信息指示所述数据类型指示信息的情况下，优先复用与数据类型为第一数据类型的RLC SDU对应的RLC PDU。
  24. 根据权利要求23所述的数据传输装置，其中，所述复用模块具体用于在复用与所述RLC SDU对应的RLC PDU之前，如果所述逻辑信道中存在第一RLC SDU，则优先复用与所述第一RLC SDU对应的RLC PDU；
    其中，所述第一RLC SDU为曾在之前一次或若干次传输中被分段、且尚有部分剩余数据等待后续传输的RLC SDU。
  25. 根据权利要求23所述的数据传输装置，其中，若所述逻辑信道对应的无线承载中存在第二RLC SDU，所述复用模块具体用于复用满足第一条件和第二条件的目标RLC SDU对应的RLC PDU，直至无法满足第一条件和/或第二条件为止；
    其中，所述第二RLC SDU为曾在之前一次或若干次传输中被分段、且尚有部分剩余数据等待后续传输的RLC SDU；
    其中，所述第一条件包括如下任一项：
    所述目标RLC SDU对应的优先传输等级比所述第二RLC SDU的优先传输等级高；
    所述目标RLC SDU对应的重要性等级比第二RLC SDU的重要性等级高；
    所述目标RLC SDU对应的传输时延需求比第二RLC SDU的传输时延需求低；
    所述目标RLC SDU被标识为“优先传输”；
    所述目标RLC SDU对应的数据类型为第一数据类型，第二RLC SDU的数据类型为不同于所述第一数据类型的第二数据类型；
    其中，所述第二条件包括：
    能够完整复用到所述传输资源中的RLC SDU。
  26. 根据权利要求25所述的数据传输装置，其中，在传输资源仍有剩余的情况下，所述复用模块具体用于复用与所述第二RLC SDU对应的RLC PDU。
  27. 根据权利要求26所述的数据传输装置，其中，在传输资源仍有剩余的情况下，所述复用模块具体用于将与所述逻辑信道中剩余的RLC SDU对应的RLC PDU复用到传输资源中。
  28. 根据权利要求22-27中任一项所述的数据传输装置，其中，所述复用模块具体用于：
    在所述第一指示信息指示所述优先传输等级的情况下，对于具有相同优先传输等级的RLC SDU，按照其所对应的PDCP SN的顺序进行复用或者按 照预设的传输规则进行复用；
    在所述第一指示信息指示所述重要性等级的情况下，对于具有相同重要性等级的RLC SDU，按照其所对应的PDCP SN的顺序进行复用或者按照预设的传输规则进行复用；
    在所述第一指示信息指示所述传输时延需求信息的情况下，对于具有相同传输时延需求的RLC SDU，按照其所对应的PDCP SN的顺序进行复用或者按照预设的传输规则进行复用；
    在所述第一指示信息指示所述“是否优先传输”标识的情况下，对于多个标识“优先传输”的RLC SDU，按照其所对应的PDCP SN的顺序进行复用或者按照预设的传输规则进行复用；
    在所述第一指示信息指示所述数据类型指示信息的情况下，对于多个第一数据类型的RLC SDU，按照其所对应的PDCP SN的顺序进行复用或者按照预设的传输规则进行复用。
  29. 根据权利要求28所述的数据传输装置，其中，
    所述传输规则通过以下任一种方式确定：由终端确定的；由网络侧设备配置的；由协议规定的。
  30. 根据权利要求20所述的数据传输装置，其中，还包括：
    接收模块，用于接收网络侧的第二指示信息，所述逻辑信道为所述第二指示信息指定的逻辑信道。
  31. 根据权利要求23-27中任一项所述的数据传输装置，其中，所述待传输数据包为XR数据包，所述第一数据类型的数据包包括以下至少一项的内容：
    视频编码器生成的I帧或non-FOV帧；
    传感器采集的用户行为数据；
    针对下行音频和/或视频业务传输的TCP ACK信令；
    RTCP ACK信令。
  32. 根据权利要求20-27中任一项所述的数据传输装置，其中，
    所述第一指示信息通过以下任一种方式确定：由网络侧设备配置；预配置；由协议规定。
  33. 根据权利要求21所述的数据传输装置，其中，
    所述待传输数据包根据业务类型区分为不同的数据类型，每个数据类型对应不同的优先传输等级、重要性等级或传输时延需求。
  34. 根据权利要求20所述的数据传输装置，其中，所述传输资源为基站分配的上行传输资源授权。
  35. 一种数据传输装置，应用于网络侧设备，包括：
    确定模块，用于确定与终端对应的逻辑信道；
    发送模块，用于向所述终端发送针对所述逻辑信道的第一指示信息，所述第一指示信息用于向所述终端指示待传输数据包的优先传输顺序。
  36. 根据权利要求35所述的数据传输装置，其中，
    所述第一指示信息还用于指示与所述逻辑信道对应的PDCP实体支持非按序数据的传递。
  37. 根据权利要求35所述的数据传输装置，其中，所述发送模块还用于向所述终端发送第二指示信息，所述逻辑信道为所述第二指示信息指定的逻辑信道。
  38. 一种终端，包括处理器，存储器及存储在所述存储器上并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16任一项所述的数据传输方法的步骤。
  39. 一种网络侧设备，包括处理器，存储器及存储在所述存储器上并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17至19任一项所述的数据传输方法的步骤。
  40. 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1-19任一项所述的数据传输方法。
  41. 一种芯片，包括处理器和通信接口，其中，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，实现实现如权利要求1至16任 一项所述的数据传输方法的步骤，或者实现如权利要求17至19任一项所述的数据传输方法的步骤。
  42. 一种计算机程序产品/程序产品，所述计算机程序产品/程序产品被存储在非易失的存储介质中，所述计算机程序产品被至少一个处理器执行时实现如权利要求1至16任一项所述的数据传输方法的步骤，或者实现如权利要求17至19任一项所述的数据传输方法的步骤。
  43. 一种通信设备，被配置为执行如权利要求1至16任一项所述的数据传输方法的步骤，或者被配置为执行如权利要求17至19任一项所述的数据传输方法的步骤。
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