WO2024037367A1 - 数据传输方法、装置、pdcp、基站以及存储介质 - Google Patents

数据传输方法、装置、pdcp、基站以及存储介质 Download PDF

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Publication number
WO2024037367A1
WO2024037367A1 PCT/CN2023/111448 CN2023111448W WO2024037367A1 WO 2024037367 A1 WO2024037367 A1 WO 2024037367A1 CN 2023111448 W CN2023111448 W CN 2023111448W WO 2024037367 A1 WO2024037367 A1 WO 2024037367A1
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Prior art keywords
pdu
duration
indication information
mode indication
packet loss
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English (en)
French (fr)
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陈颖林
刘海
龙彪
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China Telecom Corp Ltd
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China Telecom Corp Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/32—Flow control; Congestion control by discarding or delaying data units, e.g. packets or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/24—Traffic characterised by specific attributes, e.g. priority or QoS

Definitions

  • the present disclosure relates to the field of communication technology, and in particular, to a data transmission method, device, PDCP, base station and storage medium.
  • PDU Set PDU Set
  • 5GS fifth generation system
  • a data transmission method is provided, which is applied to a Packet Data Convergence Protocol (PDCP) entity.
  • the method includes: receiving a downlink protocol data unit PDU data packet corresponding to a PDU set, and obtaining the downlink PDU data from the downlink PDU data packet. Extract PDU set packet loss mode indication information from the packet; adjust the PDCP drop timer duration corresponding to the PDU set based on the PDU set packet loss mode indication information; pair the PDCP drop timer duration with the PDU set based on the PDU set packet loss mode indication information
  • the corresponding downlink PDU data packets are transmitted and processed.
  • adjusting the PDCP discard timer duration corresponding to the PDU set based on the PDU set packet loss mode indication information includes: if the PDCP drop timer duration is not adjusted, then when the When the PDU set packet loss mode indication information is the packet loss mode indication information allowed, the PDCP drop timer duration is set to the first duration; when the PDU set packet loss mode indication information is the packet loss mode indication information not allowed, The PDCP discard timer duration is set to a second duration; wherein the second duration is longer than the first duration.
  • the packet loss mode indication information is used to indicate that the receiving end can recover part or all of the information carried in the PDU Set when part of the PDU data packets are lost; the packet loss is not allowed
  • the mode indication information is used to indicate that the receiving end recovers the PDU Set after successfully receiving all PDU data packets of the PDU Set. information carried.
  • the transmission processing of each downlink PDU data packet corresponding to the PDU set based on the PDCP discard timer duration includes: when the downlink PDU data packet is received, starting the PDCP Discard the timer for timing; when the timing duration is less than the first duration or the second duration, cache the downlink PDU data packet; when the timing duration is greater than or equal to the first duration or the second duration In the case of two durations, the downlink PDU data packets that have not been successfully sent are discarded.
  • the extracting the PDU set packet loss mode indication information from the downlink PDU data packet includes: extracting the PDU set packet loss mode indication information from the GTP-U header of the downlink PDU data packet. .
  • adjusting the PDCP discard timer duration corresponding to the PDU set based on the PDU set packet loss mode indication information includes: receiving QoS configuration information sent by the SMF through the AMF; if the QoS configuration is determined If the information contains the PDU set packet loss mode indication information, the PDCP drop timer duration is adjusted based on the PDU set packet loss mode indication information; wherein, the SMF generates the QoS configuration information based on the PCC rule sent by the PCF. , the PCC rule includes the PDU set packet loss mode indication information.
  • the PCF formulates the PCC rule according to the QoS request sent by the AF; wherein the QoS request includes the PDU set packet loss mode indication information.
  • the UPF matches the downlink PDU data packet to one or more PDU sets according to the QoS rule information sent by the SMF; wherein the QoS rule information includes the packet loss mode indication information of the PDU set; The UPF adds the PDU set packet loss mode indication information to the GTP-U header of the downlink PDU data packet based on the QoS rule information.
  • a data transmission device applied to a Packet Data Convergence Protocol PDCP entity, including: an indication extraction module, configured to receive a downlink protocol data unit PDU data packet corresponding to a PDU set, from the Extract PDU set packet loss mode indication information from the downlink PDU data packet; a timer adjustment module, configured to adjust the PDCP drop timer duration corresponding to the PDU set based on the PDU set packet loss mode indication information; a transmission processing module, Used to transmit and process each downlink PDU data packet corresponding to the PDU set based on the PDCP discard timer duration.
  • an indication extraction module configured to receive a downlink protocol data unit PDU data packet corresponding to a PDU set, from the Extract PDU set packet loss mode indication information from the downlink PDU data packet
  • a timer adjustment module configured to adjust the PDCP drop timer duration corresponding to the PDU set based on the PDU set packet loss mode indication information
  • a transmission processing module Used to transmit and process each downlink PDU data packet
  • the timer adjustment module is configured to, if the PDCP discard timer duration is not adjusted, when the PDU set packet loss mode indication information is the allowed packet loss mode indication information, then the The PDCP discard timer duration is set to the first duration; when the PDU set packet loss mode indication information is the packet loss mode indication information not allowed, the PDCP drop timer duration is set to the second duration; the second duration is greater than the first duration.
  • the allowed packet loss mode indication information is used to indicate that the receiving end has some of the PDU data. In the case of packet loss, some or all of the information carried by the PDU Set is recovered; the packet loss mode indication information is not allowed to indicate that the receiving end recovers all PDU data packets in the PDU Set successfully. Describes the information carried by the PDU Set.
  • the transmission processing module is configured to start the PDCP discard timer for timing when receiving the downlink PDU data packet; when the timing duration is less than the first duration or the second duration , cache the downlink PDU data packet; when the timing duration is greater than or equal to the first duration or the second duration, discard the downlink PDU data packet that has not been successfully sent.
  • the indication extraction module is configured to extract the PDU set packet loss mode indication information from the GTP-U header of the downlink PDU data packet.
  • the timer adjustment module is configured to receive the QoS configuration information sent by the SMF through the AMF; if it is determined that the QoS configuration information contains the PDU set packet loss mode indication information, based on the PDU set
  • the packet loss mode indication information adjusts the PDCP drop timer duration; wherein the SMF generates the QoS configuration information based on the PCC rules sent by the PCF, and the PCC rules include the PDU set packet loss mode indication information.
  • a data transmission device including: a memory; and a processor coupled to the memory, the processor being configured to perform the above based on instructions stored in the memory. method described.
  • a PDCP entity including: the data transmission device as described above.
  • a base station including: the PDCP entity as described above.
  • a computer-readable storage medium stores computer instructions, and the instructions are executed by a processor as described above.
  • a computer program including: instructions that, when executed by a processor, cause the processor to perform the method as described in any of the above embodiments.
  • Figure 1 is a schematic flowchart of some embodiments of a data transmission method according to the present disclosure
  • Figure 2 is a schematic flowchart of transmission processing in some embodiments of a data transmission method according to the present disclosure
  • Figure 3 is a schematic diagram of a signaling interaction process according to some embodiments of the data transmission method of the present disclosure
  • Figure 4 is a module schematic diagram of some embodiments of a data transmission device according to the present disclosure.
  • FIG. 5 is a schematic module diagram of another embodiment of a data transmission device according to the present disclosure.
  • the loss of one PDU in the PDU set can cause the information carried by the entire PDU set to become invalid; while for other PDU sets, the receiving end can recover part of the PDU set or carry it when some PDUs are lost. All information. Whether a PDU set is allowed to lose packets depends on the characteristics of the information carried by the PDU set, such as error mechanisms, encoding standards, etc.
  • the PDCP entity when a PDCP entity receives a PDCP PDU data packet from the upper layer, the PDCP entity activates the discard timer (PDCP Discard Timer) related to it, and discards the PDU data packets that have not been successfully sent after the PDCP discard timer expires. , give up, continue waiting and discard.
  • the discard timer PDCP Discard Timer
  • the PDCP entity of the base station discards PDUs that have not been successfully transmitted after expiration based on the preset length of the discard timer, which may cause the information carried by the entire PDU set to become invalid and reduce service quality.
  • the present disclosure provides a data transmission method that can adjust the preset length of the PDCP discard timer according to the PDU set packet loss mode indication information, selectively discard the PDU data packets that are allowed to be discarded when congestion occurs, and the cache does not Allowing discarded PDU packets can ensure service quality when downlink air interface transmission is congested.
  • Figure 1 is a schematic flowchart of some embodiments of a data transmission method according to the present disclosure, applied to a PDCP entity, as shown in Figure 1:
  • Step 101 Receive the PDU data packet corresponding to the PDU set, and extract the PDU set packet loss mode indication information from the downlink PDU data packet.
  • downlink PDU data packets may carry PDU set packet loss mode indication information in various ways.
  • the PDCP entity extracts the PDU set packet loss mode indication information from the GTP-U (GPRS Tunneling Protocol-User Plane, GPRS protocol user control plane) header of the downlink PDU data packet.
  • GTP-U GPRS Tunneling Protocol-User Plane, GPRS protocol user control plane
  • Step 102 Adjust the PDCP discard timer corresponding to the PDU set based on the PDU set packet loss mode indication information.
  • Step 103 Transmit and process each downlink PDU data packet corresponding to the PDU set based on the PDCP discard timer duration.
  • the disclosed data transmission method adjusts the preset duration of the PDCP discard timer according to the PDU set packet loss mode indication information, thereby ensuring service quality when downlink air interface transmission is congested.
  • the PDCP drop timer duration is set to the first length; when the PDU set packet loss mode indication information is the allowed packet loss mode indication information, the PDCP drop timer duration is set to the first duration; When the packet mode indication information is the packet loss mode indication information not allowed, the PDCP discard timer duration is set to the second duration; wherein the second duration is longer than the first duration.
  • the packet loss mode indication information is allowed to indicate that the receiving end can recover part or all of the information carried in the PDU set when some PDU data packets are lost; the packet loss mode indication information is not allowed to indicate that the receiving end successfully receives the PDU set. In the case of all PDU packets, the information carried in the PDU set is recovered.
  • the PDCP entity extracts the PDU set packet loss mode indication information from the GTP-U header of the downlink PDU data packet, and obtains the PDU set information corresponding to the downlink PDU data packet from the downlink PDU data packet (for example, PDU set ID, etc. ). If it is determined based on the PDU set information that the PDCP discard timer duration corresponding to this PDU set has not been adjusted, adjust the PDCP drop timer duration; if it is determined based on the PDU set information that the PDCP drop timer duration corresponding to this PDU set is not adjusted If adjustments have been made, the PDCP discard timer duration will not be adjusted.
  • the PDCP entity adjusts the preset length of the PDCP discard timer of the PDU based on the PDU set packet loss mode indication information.
  • the PDU set packet loss mode indication information includes the allowed packet loss mode indication information, the disallowed packet loss mode indication information, etc.
  • the packet loss mode indication information allowed, the packet loss mode indication information not allowed, etc. may be a bit sequence with a preset format, etc.
  • the allowed packet loss mode indication information is used to indicate that the receiving end can recover part or all of the information carried by the PDU set when some PDU packets are lost, that is, the receiving end can recover the PDU set carried by the PDU set when some PDU packets are lost. some or all of the information.
  • the packet loss mode indication information is not allowed to indicate that the receiving end can recover the information carried in the PDU set after successfully receiving all PDU data packets in the PDU set. That is, the receiving end must successfully receive all PDUs in the PDU set to recover the PDU. Collection carries information.
  • the PDU set packet loss mode indication information is the allowed packet loss mode indication information
  • set the PDCP drop timer duration to the first duration, that is, adjust the preset duration of the PDCP drop timer belonging to the PDU set to a smaller value
  • the PDU set packet loss mode indication information is the packet loss mode indication information not allowed
  • the PDCP drop timer duration is set to the second duration, that is, the preset PDCP drop timer duration of the PDUs belonging to the PDU set is adjusted to a longer value. Large value.
  • FIG. 2 is a schematic flowchart of transmission processing in some embodiments of the data transmission method according to the present disclosure, as shown in Figure 2:
  • Step 201 When receiving a downlink PDU data packet, start the PDCP discard timer for timing.
  • Step 202 If the timing duration is less than the first duration or the second duration, cache the downlink PDU data packet; if the timing duration is greater than or equal to the first duration or the second duration, discard the downlink PDU data packet that has not been successfully sent. .
  • the preset timer length enables the PDCP entity to discard PDU data packets in the PDU set that is allowed to be lost when transmission is congested, and cache PDU data packets in the PDU set that is not allowed to lose packets, allowing users to recover business data. As much information as possible in the flow can ensure service quality as much as possible when the downlink air interface transmission is congested.
  • the PDCP entity receives QoS configuration information sent by SMF (Session Management Function, session management function) through AMF (Access and Mobility Management Function, access and mobility management function), and if it is determined that the QoS configuration information contains PDU
  • the PDCP entity adjusts the PDCP discard timer based on the PDU aggregate packet loss mode indication information (the QoS configuration information may also include information such as the values of the first duration and the second duration).
  • PCF formulates PCC rules based on QoS requests sent by AF (Application Function); among them, QoS requests contain PDU set packet loss mode indication information. SMF generates QoS configuration information based on PCC rules sent by PCF (Policy Control Function). PCC rules include PDU set packet loss mode indication information. PCC rules can also include information such as the values of the first duration and the second duration.
  • UPF User Plane Function
  • the QoS rule information contains PDU set packet loss mode indication information; UPF base For QoS rule information, add PDU set packet loss mode indication information to the GTP-U header of the downlink PDU data packet.
  • Figure 3 is a schematic diagram of the signaling interaction process according to some embodiments of the data transmission method of the present disclosure, as shown in Figure 3:
  • Step 301 AF sends a QoS request to PCF through NEF (Network Exposure Function).
  • the information carried in the QoS request includes PDU set packet loss mode indication information. If the AF is an AF trusted by the operator, it can directly send a QoS request to the PCF.
  • Step 302 The PCF formulates PCC rules based on the received QoS request and sends the PCC rules to the SMF, where the PCC rules include PDU set packet loss mode indication information.
  • Step 303 SMF sends the QoS rules to UPF through the N4 session.
  • Step 304 UPF matches the downlink PDU to one or more PDU sets according to the QoS rules sent by the SMF.
  • UPF adds PDU set-related information to the GTP-U header of the downlink PDU, including PDU set packet loss mode indication information.
  • Step 305 The SMF sends the QoS flow configuration information to the PDCP entity through the AMF.
  • Step 306 The PDCP entity receives the downlink PDU data packet from the UPF and checks the PDU set packet loss mode indication information carried in the GTP-U header. If the PDU set packet loss mode indication information is the packet loss mode indication information not allowed (PDU set does not allow packet loss), then adjust the preset length of the PDCP drop timer belonging to the PDU set to a larger value; if If the PDU set packet loss mode indication information is allowed packet loss mode indication information (PDU set allows packet loss), then the preset length of the PDCP drop timer of the PDUs belonging to the PDU set is adjusted to a smaller value.
  • Step 307 When the PDCP entity receives the PDU data packet from the upper layer, it starts a discard timer, caches the PDU data packets that have not expired, and discards the PDU data packets that have not been successfully sent after timeout.
  • the present disclosure provides a data transmission device 40, which is applied to the packet data convergence protocol PDCP entity.
  • the data transmission device 40 includes an indication extraction module 41, a timer adjustment module 42 and a transmission processing module. 43.
  • the indication extraction module 41 receives the downlink protocol data unit PDU data packet corresponding to the PDU set, and extracts the PDU set packet loss mode indication information from the downlink PDU data packet. For example, the indication extraction module 41 extracts the PDU set packet loss mode indication information from the GTP-U header of the downlink PDU data packet.
  • the timer adjustment module 42 adjusts the PDCP discard timer duration corresponding to the PDU set based on the PDU set packet loss mode indication information. For example, the timer adjustment module 42 receives the QoS configuration information sent by the SMF through the AMF; if it is determined that the QoS configuration information contains the PDU set packet loss mode indication information, the timer adjustment module 42 adjusts the PDCP discard timing based on the PDU set packet loss mode indication information.
  • the server duration wherein, SMF generates QoS configuration information based on the PCC rules sent by the PCF, and the PCC rules contain PDU set packet loss mode indication information.
  • the timer adjustment module 42 sets the PDCP drop timer duration to the first duration; when the PDU set packet loss mode The mode indication information is the packet loss mode indication information, and the timer adjustment module 42 sets the PDCP discard timer duration to a second duration, where the second duration is greater than the first duration.
  • the transmission processing module 43 performs transmission processing on each downlink PDU data packet corresponding to the PDU set based on the PDCP discard timer duration. For example, when receiving the downlink PDU data packet, the transmission processing module 43 starts the PDCP discard timer for timing; when the timing duration is less than the first duration or the second duration, the transmission processing module 43 caches the downlink PDU packet; during timing If the duration is greater than or equal to the first duration or the second duration, the transmission processing module 43 discards the downlink PDU data packet that has not been successfully sent.
  • FIG. 5 is a schematic module diagram of another embodiment of a data transmission device according to the present disclosure.
  • the data transmission device includes a memory 51 , a processor 52 , a communication interface 53 and a bus 54 .
  • the memory 51 is used to store instructions, and the processor 52 is coupled to the memory 51 .
  • the processor 52 is configured to execute the above-mentioned data transmission method based on the instructions stored in the memory 51 .
  • the memory 51 may be a high-speed RAM memory, a non-volatile memory (non-volatile memory), etc.
  • the memory 51 may also be a memory array.
  • the memory 51 may also be divided into blocks, and the blocks may be combined into virtual volumes according to certain rules.
  • the processor 52 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the data transmission method of the present disclosure.
  • the present disclosure provides a PDCP entity, including the data transmission device in any of the above embodiments.
  • the present disclosure provides a base station, including the PDCP entity in any of the above embodiments.
  • the present disclosure provides a computer-readable storage medium.
  • the computer-readable storage medium stores computer instructions. When the instructions are executed by a processor, the data transmission method in any of the above embodiments is implemented.
  • the computer-readable storage medium may be any combination of one or more readable media.
  • the readable medium may be a readable signal medium or a readable storage medium.
  • the readable storage medium may include, for example, but is not limited to, electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices or devices, or any combination thereof. More specific examples (non-exhaustive list) of readable storage media may include: an electrical connection with one or more conductors, a portable disk, a hard disk, random access memory (RAM), read only memory (ROM), Erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination of the above.
  • These computer program instructions may also be stored in a computer-readable memory that causes a computer or other programmable data processing apparatus to operate in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction means, the instructions
  • the device implements the functions specified in a process or processes of the flowchart and/or a block or blocks of the block diagram.
  • the data transmission method, device, PDCP, base station and storage medium in the above embodiments can adjust the preset length of the PDCP discard timer according to the PDU set packet loss mode indication information, and selectively discard PDUs that are allowed to be discarded when congestion occurs.
  • Data packets and cached PDU data packets that are not allowed to be discarded can ensure service quality when downlink air interface transmission is congested, meet the QoS requirements of business data flows that expand real-world multimedia services, and improve user experience.
  • the methods and systems of the present disclosure may be implemented in many ways.
  • the methods and systems of the present disclosure may be implemented through software, hardware, firmware, or any combination of software, hardware, and firmware.
  • the above order for the steps of the methods is for illustration only, and the steps of the methods of the present disclosure are not limited to the order specifically described above unless otherwise specifically stated.
  • the present disclosure may also be implemented as programs recorded in recording media, and these programs include machine-readable instructions for implementing methods according to the present disclosure.
  • the present disclosure also covers recording media storing programs for executing methods according to the present disclosure.

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Abstract

本公开提供了一种数据传输方法、装置、PDCP、基站以及存储介质，其中的方法包括：接收与PDU集合相对应的PDU数据包，从下行PDU数据包中提取PDU集合丢包模式指示信息；基于PDU集合丢包模式指示信息调整与PDU集合相对应的PDCP丢弃定时器时长；基于PDCP丢弃定时器时长对与PDU集合相对应的各个下行PDU数据包进行传输处理。

Description

数据传输方法、装置、PDCP、基站以及存储介质
相关申请的交叉引用
本公开是以CN申请号为202210982146.5申请日为2022年8月16日的申请为基础，并主张其优先权，该CN申请的公开内容在此作为整体引入本公开中。
技术领域
本公开涉及通信技术领域，尤其涉及一种数据传输方法、装置、PDCP、基站以及存储介质。
背景技术
在3GPP的相关标准中，将一组有关联的PDU(Protocol Data Unit，协议数据单元)划分为一个PDU Set(PDU集合)，在5GS(第五代系统)中实现以PDU Set为粒度的处理。当下行空口数据传输出现拥塞时，基站的PDCP(Packet Data Convergence Protocol，分组数据集中协议)实体基于丢弃定时器的预设时长丢弃超时仍未成功传输的PDU。
发明内容
根据本公开的第一方面，提供一种数据传输方法，应用于分组数据汇聚协议PDCP实体，所述方法包括：接收与PDU集合相对应的下行协议数据单元PDU数据包，从所述下行PDU数据包中提取PDU集合丢包模式指示信息；基于所述PDU集合丢包模式指示信息调整与所述PDU集合相对应的PDCP丢弃定时器时长；基于所述PDCP丢弃定时器时长对与所述PDU集合相对应的各个下行PDU数据包进行传输处理。
在一些实施例中，所述基于所述PDU集合丢包模式指示信息调整与所述PDU集合相对应的PDCP丢弃定时器时长包括：如果所述PDCP丢弃定时器时长未进行调整，则当所述PDU集合丢包模式指示信息为允许丢包模式指示信息时，将所述PDCP丢弃定时器时长设置为第一时长；当所述PDU集合丢包模式指示信息为不允许丢包模式指示信息时，将所述PDCP丢弃定时器时长设置为第二时长；其中，所述第二时长大于所述第一时长。
在一些实施例中，所述允许丢包模式指示信息用于表征接收端在有部分所述PDU数据包丢失的情况下恢复出所述PDU Set携带的部分或全部信息；所述不允许丢包模式指示信息用于表征接收端在成功接收所述PDU Set的所有PDU数据包的情况下恢复出所述PDU Set 携带的信息。
在一些实施例中，所述基于所述PDCP丢弃定时器时长对与所述PDU集合相对应的各个下行PDU数据包进行传输处理包括：当接收到所述下行PDU数据包时，启动所述PDCP丢弃定时器进行计时；在计时时长小于所述第一时长或所述第二时长的情况下，缓存所述下行PDU数据包；在所述计时时长大于或等于所述第一时长或所述第二时长的情况下，丢弃未发送成功的所述下行PDU数据包。
在一些实施例中，所述从所述下行PDU数据包中提取PDU集合丢包模式指示信息包括：从所述下行PDU数据包的GTP-U头部中提取所述PDU集合丢包模式指示信息。
在一些实施例中，所述基于所述PDU集合丢包模式指示信息调整与所述PDU集合相对应的PDCP丢弃定时器时长包括：接收SMF通过AMF发送的QoS配置信息；如果确定所述QoS配置信息包含有所述PDU集合丢包模式指示信息，则基于所述PDU集合丢包模式指示信息调整所述PDCP丢弃定时器时长；其中，所述SMF基于PCF发送的PCC规则生成所述QoS配置信息，所述PCC规则包含有所述PDU集合丢包模式指示信息。
在一些实施例中，所述PCF根据AF发送的QoS请求制定所述PCC规则；其中，所述QoS请求包含有所述PDU集合丢包模式指示信息。
在一些实施例中，UPF根据所述SMF发送的QoS规则信息，将下行PDU数据包匹配至一个或多个PDU集合；其中，所述QoS规则信息包含有所述PDU集合丢包模式指示信息；所述UPF基于所述QoS规则信息，在所述下行PDU数据包的GTP-U头部添加所述PDU集合丢包模式指示信息。
根据本公开的第二方面，提供一种数据传输装置，应用于分组数据汇聚协议PDCP实体，包括：指示提取模块，用于接收与PDU集合相对应的下行协议数据单元PDU数据包，从所述下行PDU数据包中提取PDU集合丢包模式指示信息；定时器调整模块，用于基于所述PDU集合丢包模式指示信息调整与所述PDU集合相对应的PDCP丢弃定时器时长；传输处理模块，用于基于所述PDCP丢弃定时器时长对与所述PDU集合相对应的各个下行PDU数据包进行传输处理。
在一些实施例中，所述定时器调整模块，用于如果所述PDCP丢弃定时器时长未进行调整，则当所述PDU集合丢包模式指示信息为允许丢包模式指示信息，则将所述PDCP丢弃定时器时长设置为第一时长；当所述PDU集合丢包模式指示信息为不允许丢包模式指示信息，则将所述PDCP丢弃定时器时长设置为第二时长；所述第二时长大于所述第一时长。
在一些实施例中，所述允许丢包模式指示信息用于表征接收端在有部分所述PDU数据 包丢失的情况下恢复出所述PDU Set携带的部分或全部信息；所述不允许丢包模式指示信息用于表征接收端在成功接收所述PDU Set的所有PDU数据包的情况下恢复出所述PDU Set携带的信息。
在一些实施例中，所述传输处理模块，用于当接收到所述下行PDU数据包时，启动所述PDCP丢弃定时器进行计时；在计时时长小于所述第一时长或所述第二时长的情况下，缓存所述下行PDU数据包；在所述计时时长大于或等于所述第一时长或所述第二时长的情况下，丢弃未发送成功的所述下行PDU数据包。
在一些实施例中，所述指示提取模块，用于从所述下行PDU数据包的GTP-U头部中提取所述PDU集合丢包模式指示信息。
在一些实施例中，所述定时器调整模块，用于接收SMF通过AMF发送的QoS配置信息；如果确定所述QoS配置信息包含有所述PDU集合丢包模式指示信息，则基于所述PDU集合丢包模式指示信息调整所述PDCP丢弃定时器时长；其中，所述SMF基于PCF发送的PCC规则生成所述QoS配置信息，所述PCC规则包含有所述PDU集合丢包模式指示信息。
根据本公开的第三方面，提供一种数据传输装置，包括：存储器；以及耦接至所述存储器的处理器，所述处理器被配置为基于存储在所述存储器中的指令，执行如上所述的方法。
根据本公开的第四方面，提供一种PDCP实体，包括：如上所述的数据传输装置。
根据本公开的第五方面，提供一种基站，包括：如上所述的PDCP实体。
根据本公开的第六方面，提供一种计算机可读存储介质，所述计算机可读存储介质存储有计算机指令，所述指令被处理器执行如上所述的方法。
根据本公开的第七方面，提供一种计算机程序，包括：指令，所述指令当由处理器执行时使所述处理器执行如上述任一实施例所述的方法。
附图说明
为了更清楚地说明本公开实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作一简单地介绍，显而易见地，下面描述中的附图仅仅是本公开的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。为了更清楚地说明本公开实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作一简单地介绍，显而易见地，下面描述中的附图仅仅是本公开的一些实施例，对于本领域普通技术人员来讲，在不付出 创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1为根据本公开的数据传输方法的一些实施例的流程示意图；
图2为根据本公开的数据传输方法的一些实施例中的进行传输处理的流程示意图；
图3为根据本公开的数据传输方法的一些实施例的信令交互流程示意图；
图4为根据本公开的数据传输装置的一些实施例的模块示意图；
图5为根据本公开的数据传输装置的另一些实施例的模块示意图。
具体实施方式
下面参照附图对本公开进行更全面的描述，其中说明本公开的示例性实施例。下面将结合本公开实施例中的附图，对本公开实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本公开一部分实施例，而不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本公开保护的范围。
下文中的“第一”、“第二”等仅用于描述上相区别，并没有其他特殊的含义。
在发明人所知晓的相关技术中，在拓展现实多媒体服务的业务数据流中，普遍存在多个PDU相互关联、共同承载应用层的一个信息单元(例如视频传输中的I帧、P帧等)的情况。因此，在3GPP的相关标准中，将一组有关联的PDU划分为一个PDU Set(PDU集合)，以在5GS中实现以PDU Set为粒度的处理。
对于一些PDU集合，PDU集合内的一个PDU的丢失就能够导致整个PDU集合携带的信息失效；而对于另一些PDU集合，接收端可以在有部分PDU丢失的情况下恢复出PDU集合携带的部分或全部信息。是否允许PDU集合丢包取决于该PDU集合携带信息的特性，如差错机制、编码标准等。
在相关技术中，当PDCP实体从上层接收到一个PDCP PDU数据包时，PDCP实体激活与之相关的丢弃定时器(PDCP Discard Timer)，对PDCP丢弃定时器超时后仍未成功发送的PDU数据包，放弃继续等待并丢弃。当下行空口数据传输出现拥塞时，基站的PDCP实体基于丢弃定时器的预设时长丢弃超时仍未成功传输的PDU，可能导致整个PDU集合携带的信息失效，降低业务质量。
有鉴于此，本公开提供一种数据传输方法，能够根据PDU集合丢包模式指示信息调整PDCP丢弃定时器的预设时长，在拥塞发生时有选择性地丢弃允许丢弃的PDU数据包，缓存不允许丢弃的PDU数据包，能够在下行空口传输拥塞时保证业务质量。
图1为根据本公开的数据传输方法的一些实施例的流程示意图，应用于PDCP实体，如图1所示：
步骤101，接收与PDU集合相对应的PDU数据包，从下行PDU数据包中提取PDU集合丢包模式指示信息。
在一些实施例中，下行PDU数据包可以通过多种方式携带PDU集合丢包模式指示信息。例如，PDCP实体从下行PDU数据包的GTP-U(GPRS Tunneling Protocol-User Plane，GPRS协议用户控制面)头部中提取PDU集合丢包模式指示信息。
步骤102，基于PDU集合丢包模式指示信息调整与PDU集合相对应的PDCP丢弃定时器时长。
步骤103，基于PDCP丢弃定时器时长对与PDU集合相对应的各个下行PDU数据包进行传输处理。
本公开的数据传输方法，根据PDU集合丢包模式指示信息调整PDCP丢弃定时器的预设时长，能够在下行空口传输拥塞时保证业务质量。
在一些实施例中，如果PDCP丢弃定时器时长未进行调整，则当PDU集合丢包模式指示信息为允许丢包模式指示信息时，将PDCP丢弃定时器时长设置为第一时长；当PDU集合丢包模式指示信息为不允许丢包模式指示信息时，将PDCP丢弃定时器时长设置为第二时长；其中，第二时长大于第一时长。
允许丢包模式指示信息用于表征接收端在有部分PDU数据包丢失的情况下恢复出PDU集合携带的部分或全部信息；不允许丢包模式指示信息用于表征接收端在成功接收PDU集合的所有PDU数据包的情况下恢复出PDU集合携带的信息。
例如，PDCP实体从下行PDU数据包的GTP-U头部中提取PDU集合丢包模式指示信息，并从下行PDU数据包中获取下行PDU数据包所对应的PDU集合信息(例如为PDU集合ID等)。如果基于PDU集合信息确定与此PDU集合相对应的PDCP丢弃定时器时长未进行调整，则对PDCP丢弃定时器时长进行调整；如果基于PDU集合信息确定与此PDU集合相对应的PDCP丢弃定时器时长已经进行过调整，则不对PDCP丢弃定时器时长进行调整。
PDCP实体基于PDU集合丢包模式指示信息调整PDU的PDCP丢弃定时器的预设时长，PDU集合丢包模式指示信息包括允许丢包模式指示信息、不允许丢包模式指示信息等。允许丢包模式指示信息、不允许丢包模式指示信息等可以为具有预设格式的比特序列等。
允许丢包模式指示信息用于表征接收端在有部分PDU数据包丢失的情况下恢复出PDU集合携带的部分或全部信息，即接收端可以在有部分PDU丢失的情况下恢复出PDU集合携带 的部分或全部信息。不允许丢包模式指示信息用于表征接收端在成功接收PDU集合的所有PDU数据包的情况下恢复出PDU集合携带的信息，即收端必须成功接收PDU集合内的所有PDU才能恢复出该PDU集合携带的信息。
如果PDU集合丢包模式指示信息为允许丢包模式指示信息，则将PDCP丢弃定时器时长设置为第一时长，即将属于该PDU集合的PDCP丢弃定时器的预设时长调整为一个较小值；如果PDU集合丢包模式指示信息为不允许丢包模式指示信息，则将PDCP丢弃定时器时长设置为第二时长，即将属于该PDU集合的PDU的PDCP丢弃定时器的预设时长调整为一个较大值。
在一些实施例中，基于PDCP丢弃定时器时长对与PDU集合相对应的各个下行PDU数据包进行传输处理可以采用多种方法。图2为根据本公开的数据传输方法的一些实施例中的进行传输处理的流程示意图，如图2所示：
步骤201，当接收到下行PDU数据包时，启动PDCP丢弃定时器进行计时。
步骤202，在计时时长小于第一时长或第二时长的情况下，缓存下行PDU数据包；在计时时长大于或等于第一时长或第二时长的情况下，丢弃未发送成功的下行PDU数据包。
通过减小与允许丢包的PDU集合内的全部PDU数据包相关联的PDCP丢弃定时器时长的预设时长，增大与不允许丢包的PDU集合内的全部PDU数据包相关联的PDCP丢弃定时器时长的预设时长，可以使PDCP实体在传输拥塞时丢弃允许丢包的PDU集合内的PDU数据包，缓存不允许丢包的PDU集合内的PDU数据包，能够使用户恢复出业务数据流中尽可能多的信息，可以在下行空口传输拥塞时尽可能保证业务质量。
在一些实施例中，PDCP实体接收SMF(Session Management Function，会话管理功能)通过AMF(Access and Mobility Management Function，接入和移动性管理功能)发送的QoS配置信息，如果确定QoS配置信息包含有PDU集合丢包模式指示信息(QoS配置信息还可以包括第一时长和第二时长的值等信息)，则PDCP实体基于PDU集合丢包模式指示信息调整PDCP丢弃定时器时长。
PCF根据AF(Application Function，应用功能)发送的QoS请求制定PCC规则；其中，QoS请求包含有PDU集合丢包模式指示信息。SMF基于PCF(Policy Control Function，策略控制功能)发送的PCC规则生成QoS配置信息，PCC规则包含有PDU集合丢包模式指示信息，PCC规则也可以包括第一时长和第二时长的值等信息。
UPF(User Plane Function，用户面功能)根据SMF发送的QoS规则信息，将下行PDU数据包匹配至一个或多个PDU集合，QoS规则信息包含有PDU集合丢包模式指示信息；UPF基 于QoS规则信息，在下行PDU数据包的GTP-U头部添加PDU集合丢包模式指示信息。
图3为根据本公开的数据传输方法的一些实施例的信令交互流程示意图，如图3所示：
步骤301，AF通过NEF(Network Exposure Function，网络开放功能)向PCF发送QoS请求，QoS请求中携带的信息包含PDU集合丢包模式指示信息。如果AF是运营商可信的AF，可以直接向PCF发送QoS请求。
步骤302，PCF根据接收的QoS请求制定PCC规则，并将PCC规则发送给SMF，其中，PCC规则中包含PDU集合丢包模式指示信息。
步骤303，SMF通过N4会话将QoS规则发送给UPF。
步骤304，UPF根据SMF发送的QoS规则，将下行PDU匹配到一个或多个PDU集合。UPF在下行PDU的GTP-U头部添加PDU集合相关的信息，包括PDU集合丢包模式指示信息。
步骤305，SMF通过AMF将QoS流配置信息发送给PDCP实体。
步骤306，PDCP实体从UPF接收到下行PDU数据包，检查GTP-U头部中携带的PDU集合丢包模式指示信息。如果所述PDU集合丢包模式指示信息为不允许丢包模式指示信息(PDU集合不允许丢包)，则将属于该PDU集合的PDCP丢弃定时器的预设时长调整为一个较大值；如果所述PDU集合丢包模式指示信息为允许丢包模式指示信息(PDU集合允许丢包)，则将属于该PDU集合的PDU的PDCP丢弃定时器的预设时长调整为一个较小值。
步骤307，PDCP实体接收到来自上层的PDU数据包时启动丢弃计时器，缓存未超时的PDU数据包，丢弃超时还未成功发送的PDU数据包。
在一些实施例中，如图4所示，本公开提供一种数据传输装置40，应用于分组数据汇聚协议PDCP实体，数据传输装置40包括指示提取模块41、定时器调整模块42和传输处理模块43。指示提取模块41接收与PDU集合相对应的下行协议数据单元PDU数据包，从下行PDU数据包中提取PDU集合丢包模式指示信息。例如，指示提取模块41从下行PDU数据包的GTP-U头部中提取PDU集合丢包模式指示信息。
定时器调整模块42基于PDU集合丢包模式指示信息调整与PDU集合相对应的PDCP丢弃定时器时长。例如，定时器调整模块42接收SMF通过AMF发送的QoS配置信息；如果确定QoS配置信息包含有PDU集合丢包模式指示信息，则定时器调整模块42基于PDU集合丢包模式指示信息调整PDCP丢弃定时器时长；其中，SMF基于PCF发送的PCC规则生成QoS配置信息，PCC规则包含有PDU集合丢包模式指示信息。
如果PDCP丢弃定时器时长未进行调整，则当PDU集合丢包模式指示信息为允许丢包模式指示信息，定时器调整模块42将PDCP丢弃定时器时长设置为第一时长；当PDU集合丢包 模式指示信息为不允许丢包模式指示信息，定时器调整模块42将PDCP丢弃定时器时长设置为第二时长，所述第二时长大于所述第一时长。
传输处理模块43基于PDCP丢弃定时器时长对与PDU集合相对应的各个下行PDU数据包进行传输处理。例如，当接收到下行PDU数据包时，传输处理模块43启动PDCP丢弃定时器进行计时；在计时时长小于第一时长或第二时长的情况下，传输处理模块43缓存下行PDU数据包；在计时时长大于或等于第一时长或第二时长的情况下，传输处理模块43丢弃未发送成功的下行PDU数据包。
图5为根据本公开的数据传输装置的另一些实施例的模块示意图。如图5所示，该数据传输装置包括存储器51、处理器52、通信接口53以及总线54。存储器51用于存储指令，处理器52耦合到存储器51，处理器52被配置为基于存储器51存储的指令执行实现上述的数据传输方法。
存储器51可以为高速RAM存储器、非易失性存储器(non-volatile memory)等，存储器51也可以是存储器阵列。存储器51还可能被分块，并且块可按一定的规则组合成虚拟卷。处理器52可以为中央处理器CPU，或专用集成电路ASIC(Application Specific Integrated Circuit)，或者是被配置成实施本公开的数据传输方法的一个或多个集成电路。
在一些实施例中，本公开提供一种PDCP实体，包括如上任一实施例中的数据传输装置。
本公开提供一种基站，包括如上任一实施例中的PDCP实体。
在一些实施例中，本公开提供一种计算机可读存储介质，计算机可读存储介质存储有计算机指令，指令被处理器执行时实现如上任一个实施例中的数据传输方法。
所述计算机可读存储介质可以采用一个或多个可读介质的任意组合。可读介质可以是可读信号介质或者可读存储介质。可读存储介质例如可以包括但不限于电、磁、光、电磁、红外线、或半导体的系统、装置或器件，或者任意以上的组合。可读存储介质的更具体的例子(非穷举的列举)可以包括：具有一个或者多个导线的电连接、便携式盘、硬盘、随机存取存储器(RAM)、只读存储器(ROM)、可擦式可编程只读存储器(EPROM或闪存)、光纤、便携式紧凑盘只读存储器(CD-ROM)、光存储器件、磁存储器件、或者上述的任意合适的组合。
本公开是参照根据本公开实施例的方法、设备(系统)和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产 生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
上述实施例中的数据传输方法、装置、PDCP、基站以及存储介质，能够根据PDU集合丢包模式指示信息调整PDCP丢弃定时器的预设时长，在拥塞发生时有选择性地丢弃允许丢弃的PDU数据包，缓存不允许丢弃的PDU数据包，能够在下行空口传输拥塞时保证业务质量，满足了拓展现实多媒体服务的业务数据流的QoS需求，提高了用户的使用体验。
可能以许多方式来实现本公开的方法和系统。例如，可通过软件、硬件、固件或者软件、硬件、固件的任何组合来实现本公开的方法和系统。用于方法的步骤的上述顺序仅是为了进行说明，本公开的方法的步骤不限于以上具体描述的顺序，除非以其它方式特别说明。此外，在一些实施例中，还可将本公开实施为记录在记录介质中的程序，这些程序包括用于实现根据本公开的方法的机器可读指令。因而，本公开还覆盖存储用于执行根据本公开的方法的程序的记录介质。
本公开的描述是为了示例和描述起见而给出的，而并不是无遗漏的或者将本公开限于所公开的形式。很多修改和变化对于本领域的普通技术人员而言是显然的。选择和描述实施例是为了更好说明本公开的原理和实际应用，并且使本领域的普通技术人员能够理解本公开从而设计适于特定用途的带有各种修改的各种实施例。

Claims (19)

  1. 一种数据传输方法，应用于分组数据汇聚协议PDCP实体，所述方法包括：
    接收与PDU集合相对应的下行协议数据单元PDU数据包，从所述下行PDU数据包中提取PDU集合丢包模式指示信息；
    基于所述PDU集合丢包模式指示信息调整与所述PDU集合相对应的PDCP丢弃定时器时长；
    基于所述PDCP丢弃定时器时长对与所述PDU集合相对应的各个下行PDU数据包进行传输处理。
  2. 如权利要求1所述的数据传输方法，其中，所述基于所述PDU集合丢包模式指示信息调整与所述PDU集合相对应的PDCP丢弃定时器时长包括：
    如果所述PDCP丢弃定时器时长未进行调整，则当所述PDU集合丢包模式指示信息为允许丢包模式指示信息时，将所述PDCP丢弃定时器时长设置为第一时长；当所述PDU集合丢包模式指示信息为不允许丢包模式指示信息时，将所述PDCP丢弃定时器时长设置为第二时长；
    其中，所述第二时长大于所述第一时长。
  3. 如权利要求2所述的数据传输方法，其中，
    所述允许丢包模式指示信息用于表征接收端在有部分所述PDU数据包丢失的情况下恢复出所述PDU集合携带的部分或全部信息；
    所述不允许丢包模式指示信息用于表征接收端在成功接收所述PDU集合的所有PDU数据包的情况下恢复出所述PDU集合携带的信息。
  4. 如权利要求2或3所述的数据传输方法，其中，所述基于所述PDCP丢弃定时器时长对与所述PDU集合相对应的各个下行PDU数据包进行传输处理包括：
    当接收到所述下行PDU数据包时，启动所述PDCP丢弃定时器进行计时；
    在计时时长小于所述第一时长或所述第二时长的情况下，缓存所述下行PDU数据包；在所述计时时长大于或等于所述第一时长或所述第二时长的情况下，丢弃未发送成功的所述下行PDU数据包。
  5. 如权利要求1至4任一项所述的数据传输方法，其中，所述从所述下行PDU数据包中提取PDU集合丢包模式指示信息包括：
    从所述下行PDU数据包的GTP-U头部中提取所述PDU集合丢包模式指示信息。
  6. 如权利要求1至5任一项所述的数据传输方法，其中，所述基于所述PDU集合丢包模式指示信息调整与所述PDU集合相对应的PDCP丢弃定时器时长包括：
    接收SMF通过AMF发送的QoS配置信息；
    如果确定所述QoS配置信息包含有所述PDU集合丢包模式指示信息，则基于所述PDU集合丢包模式指示信息调整所述PDCP丢弃定时器时长；
    其中，所述SMF基于PCF发送的PCC规则生成所述QoS配置信息，所述PCC规则包含有所述PDU集合丢包模式指示信息。
  7. 如权利要求6所述的数据传输方法，其中，
    所述PCF根据AF发送的QoS请求制定所述PCC规则；其中，所述QoS请求包含有所述PDU集合丢包模式指示信息。
  8. 如权利要求6所述的数据传输方法，其中，
    UPF根据所述SMF发送的QoS规则信息，将下行PDU数据包匹配至一个或多个PDU集合；其中，所述QoS规则信息包含有所述PDU集合丢包模式指示信息；
    所述UPF基于所述QoS规则信息，在所述下行PDU数据包的GTP-U头部添加所述PDU集合丢包模式指示信息。
  9. 一种数据传输装置，应用于分组数据汇聚协议PDCP实体，所述装置包括：
    指示提取模块，用于接收与PDU集合相对应的下行协议数据单元PDU数据包，从所述下行PDU数据包中提取PDU集合丢包模式指示信息；
    定时器调整模块，用于基于所述PDU集合丢包模式指示信息调整与所述PDU集合相对应的PDCP丢弃定时器时长；
    传输处理模块，用于基于所述PDCP丢弃定时器时长对与所述PDU集合相对应的各个下行PDU数据包进行传输处理。
  10. 如权利要求9所述的数据传输装置，其中，
    所述定时器调整模块，用于如果所述PDCP丢弃定时器时长未进行调整，则当所述PDU集合丢包模式指示信息为允许丢包模式指示信息，将所述PDCP丢弃定时器时长设置为第一时长；当所述PDU集合丢包模式指示信息为不允许丢包模式指示信息，将所述PDCP丢弃定时器时长设置为第二时长；其中，所述第二时长大于所述第一时长。
  11. 如权利要求10所述的数据传输装置，其中，
    所述允许丢包模式指示信息用于表征接收端在有部分所述PDU数据包丢失的情况下恢复出所述PDU集合携带的部分或全部信息；所述不允许丢包模式指示信息用于表征接收端 在成功接收所述PDU集合的所有PDU数据包的情况下恢复出所述PDU集合携带的信息。
  12. 如权利要求10或11所述的数据传输装置，其中，
    所述传输处理模块，用于当接收到所述下行PDU数据包时，启动所述PDCP丢弃定时器进行计时；在计时时长小于所述第一时长或所述第二时长的情况下，缓存所述下行PDU数据包；在所述计时时长大于或等于所述第一时长或所述第二时长的情况下，丢弃未发送成功的所述下行PDU数据包。
  13. 如权利要求9至12任一项所述的数据传输装置，其中，
    所述指示提取模块，用于从所述下行PDU数据包的GTP-U头部中提取所述PDU集合丢包模式指示信息。
  14. 如权利要求9至13任一项所述的数据传输装置，其中，
    所述定时器调整模块，用于接收SMF通过AMF发送的QoS配置信息；如果确定所述QoS配置信息包含有所述PDU集合丢包模式指示信息，则基于所述PDU集合丢包模式指示信息调整所述PDCP丢弃定时器时长；其中，所述SMF基于PCF发送的PCC规则生成所述QoS配置信息，所述PCC规则包含有所述PDU集合丢包模式指示信息。
  15. 一种数据传输装置，包括：
    存储器；以及耦接至所述存储器的处理器，所述处理器被配置为基于存储在所述存储器中的指令，执行如权利要求1至8中任一项所述的方法。
  16. 一种PDCP实体，包括：
    如权利要求9至15任一项所述的数据传输装置。
  17. 一种基站，包括：
    如权利要求16所述的PDCP实体。
  18. 一种计算机可读存储介质，所述计算机可读存储介质存储有计算机指令，所述指令被处理器执行如权利要求1至8中任一项所述的数据传输方法。
  19. 一种计算机程序，包括：
    指令，所述指令当由处理器执行时使所述处理器执行如权利要求1-8中任一项所述的数据传输方法。
PCT/CN2023/111448 2022-08-16 2023-08-07 数据传输方法、装置、pdcp、基站以及存储介质 Ceased WO2024037367A1 (zh)

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