WO2019154160A1

WO2019154160A1 - Communication method and apparatus

Info

Publication number: WO2019154160A1
Application number: PCT/CN2019/073519
Authority: WO
Inventors: 朱强华; 周铮; 熊春山; 吴义壮
Original assignee: 华为技术有限公司
Priority date: 2018-02-08
Filing date: 2019-01-28
Publication date: 2019-08-15
Also published as: CN110138685B; CN110138685A

Abstract

Provided are a communication method and apparatus, which are used for solving the problem of a reordering indication being unable to meet the requirements of different services caused by the particle size of the reordering indication being only limited to the particle size of a QoSflow. The method comprises: a first network apparatus receiving downlink data; the first network apparatus determining an SDF filter matching the downlink data; the first network apparatus adding a label to the downlink data according to reordering indication information corresponding to the SDF filter, wherein the reordering indication information is used to indicate whether SDFs need to be reordered, if the reordering indication information indicates that the SDFs need to be reordered, the label is a first label, and if the reordering indication information indicates that the SDFs do not need to be reordered, the label is a second label; and the first network apparatus sending, to an access network apparatus, the downlink data to which the label is added, wherein the first label is used to instruct the access network apparatus to reorder the downlink data, and the second label is used to instruct the access network apparatus not to reorder the downlink data.

Description

一种通信方法及装置Communication method and device

本申请要求于2018年2月8日提交中国专利局、申请号为201810127551.2、申请名称为“一种通信方法及装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。This application claims the priority of the Chinese Patent Application, the entire disclosure of which is hereby incorporated by reference.

技术领域Technical field

本申请涉及通信技术领域，尤其涉及一种通信方法及装置。The present application relates to the field of communications technologies, and in particular, to a communication method and apparatus.

背景技术Background technique

在第五代(fifth-generation，简称5G)无线通信***中，网络处理数据的最小粒度是服务质量(quality of service，简称QoS)流(flow)，QoS flow即具有相同的处理转发需求的数据流。当涉及到QoS flow在分组数据汇聚协议(packet data convergence protocol，简称PDCP)层的重排序时，若QoS flow到达无线接入网(radio access network，简称RAN)，只有在QoS flow的QoS Profile(配置)中明确指示出不需要重排序(reordering)传输时，RAN才可以禁用PDCP层的重排序功能(reordering function)。由于这种方式是在QoS Profile中指示是否禁用PDCP层的重排序功能，指示的粒度仅限于QoS flow粒度，因此，无法满足不同的业务的需求。In a fifth-generation (5G) wireless communication system, the minimum granularity of network processing data is a quality of service (QoS) flow, and QoS flow is the same data that handles forwarding requirements. flow. When the QoS flow is involved in the reordering of the packet data convergence protocol (PDCP) layer, if the QoS flow reaches the radio access network (RAN), only the QoS profile of the QoS flow ( The RAN can disable the reordering function of the PDCP layer when it is explicitly indicated that reordering transmission is not required. Since this method indicates whether to disable the reordering function of the PDCP layer in the QoS profile, the granularity of the indication is limited to the QoS flow granularity, and therefore, the requirements of different services cannot be met.

发明内容Summary of the invention

本申请实施例提供了一种通信方法及装置，用于解决由于重排序指示的粒度仅限于QoS flow粒度而导致的重排序指示无法满足不同的业务的需求的问题。The embodiment of the present application provides a communication method and apparatus for solving the problem that the reordering indication caused by the reordering indication is limited to the QoS flow granularity and cannot meet the requirements of different services.

为达到上述目的，本申请实施例提供如下技术方案：To achieve the above objective, the embodiment of the present application provides the following technical solutions:

第一方面，提供了一种通信方法，包括：第一网络装置接收下行数据；第一网络装置确定与下行数据匹配的SDF过滤器；第一网络装置根据SDF过滤器对应的重排序指示信息为下行数据添加标签，其中，重排序指示信息用于指示SDF是否需被重排序；若重排序指示信息指示SDF需被重排序，标签为第一标签；若重排序指示信息指示SDF不需被重排序，标签为第二标签；第一网络装置向接入网装置发送添加标签后的下行数据，第一标签用于指示接入网装置对下行数据重排序，第二标签用于指示接入网装置不对下行数据重排序。第一方面提供的方法，接入网装置可以根据下行数据携带的标签确定是否对下行数据重排序，由于下行数据携带的标签根据与下行数据匹配的SDF过滤器对应的重排序指示信息确定，因此，实现了SDF粒度的重排序指示，从而使得网络可以根据SDF的需求确定是否对所属于SDF的下行数据重排序，满足不同的业务的需求。In a first aspect, a communication method is provided, including: a first network device receives downlink data; a first network device determines an SDF filter that matches downlink data; and the first network device determines, according to the reordering indication information corresponding to the SDF filter, The downlink data is tagged, wherein the reordering indication information is used to indicate whether the SDF needs to be reordered; if the reordering indication information indicates that the SDF needs to be reordered, the label is the first label; if the reordering indication information indicates that the SDF does not need to be re- Sorting, the label is a second label; the first network device sends the added downlink data to the access network device, where the first label is used to indicate that the access network device reorders the downlink data, and the second label is used to indicate the access network. The device does not reorder the downlink data. The method provided by the first aspect, the access network device may determine, according to the label carried by the downlink data, whether to reorder the downlink data, because the label carried by the downlink data is determined according to the reordering indication information corresponding to the SDF filter that matches the downlink data, The reordering indication of the SDF granularity is implemented, so that the network can determine whether to reorder the downlink data belonging to the SDF according to the requirements of the SDF, and meet the requirements of different services.

在一种可能的设计中，该方法还包括：第一网络装置根据SDF过滤器确定SDF过滤器对应的重排序指示信息。其中，与下行数据匹配的SDF过滤器所包含的部分或全部信息和下行数据的报文头中的部分或全部信息相同。In a possible design, the method further includes: the first network device determining the reordering indication information corresponding to the SDF filter according to the SDF filter. The part or all of the information included in the SDF filter matched with the downlink data is the same as some or all of the information in the header of the downlink data.

在一种可能的设计中，该方法还包括：第一网络装置从第二网络装置接收SDF过滤器和重排序指示信息。第一网络装置接收到SDF过滤器和重排序指示信息之后，默认其存在对应关系。In one possible design, the method further includes the first network device receiving the SDF filter and the reordering indication information from the second network device. After receiving the SDF filter and the reordering indication information, the first network device defaults to the corresponding relationship.

在一种可能的设计中，接入网装置为源接入网装置，若重排序指示信息用于指示SDF需被重排序，该方法还包括：第一网络装置向接入网装置发送结束标记信息，结束标记信息用于辅助目标接入网装置重排序；其中，源接入网装置为接收下行数据的终端在进行基站切换过程中的源基站，目标接入网装置为接收下行数据的终端在进行基站切换过程中的目标基站。该种可能的设计，能够进一步的保证会话的连续性。In a possible design, the access network device is a source access network device, and if the reordering indication information is used to indicate that the SDF needs to be reordered, the method further includes: the first network device sending an end tag to the access network device The information, the end tag information is used to assist the target access network device reordering; wherein, the source access network device is a source base station in which the terminal receiving the downlink data performs the base station handover process, and the target access network device is the terminal receiving the downlink data. The target base station in the process of performing base station handover. This kind of possible design can further ensure the continuity of the session.

第二方面，提供了一种通信方法，包括：接入网装置接收下行数据，下行数据携带标签，标签根据与下行数据匹配的SDF过滤器对应的重排序指示信息确定，重排序指示信息用于指示SDF是否需被重排序；若重排序指示信息指示SDF需被重排序，标签为第一标签；若重排序指示信息指示SDF不需被重排序，标签为第二标签；接入网装置根据标签确定是否对下行数据重排序。第二方面提供的方法，接入网装置可以根据下行数据携带的标签确定是否对下行数据重排序，由于下行数据携带的标签根据与下行数据匹配的SDF过滤器对应的重排序指示信息确定，因此，实现了SDF粒度的重排序指示，从而使得网络可以根据SDF的需求确定是否对所属于SDF的下行数据重排序，满足不同的业务的需求。A second aspect provides a communication method, including: receiving, by the access network device, downlink data, the downlink data carrying a label, the label being determined according to reordering indication information corresponding to the SDF filter matched with the downlink data, and the reordering indication information is used for Indicates whether the SDF needs to be reordered; if the reordering indication information indicates that the SDF needs to be reordered, the label is the first label; if the reordering indication information indicates that the SDF does not need to be reordered, the label is the second label; the access network device is The tag determines whether to reorder the downstream data. The method provided by the second aspect, the access network device may determine, according to the label carried by the downlink data, whether to reorder the downlink data, because the label carried by the downlink data is determined according to the reordering indication information corresponding to the SDF filter that matches the downlink data, The reordering indication of the SDF granularity is implemented, so that the network can determine whether to reorder the downlink data belonging to the SDF according to the requirements of the SDF, and meet the requirements of different services.

在一种可能的设计中，接入网装置根据标签确定是否对下行数据重排序，包括：若标签为第一标签，接入网装置根据标签确定对下行数据重排序；或者，若标签为第二标签，接入网装置根据标签确定不对下行数据重排序。In a possible design, the access network device determines whether to reorder the downlink data according to the label, including: if the label is the first label, the access network device determines, according to the label, reordering the downlink data; or, if the label is the first The second label, the access network device determines, according to the label, that the downlink data is not reordered.

在一种可能的设计中，接入网装置接收下行数据，包括:接入网装置的SDAP层接收下行数据。In a possible design, the access network device receives the downlink data, including: the SDAP layer of the access network device receives the downlink data.

在一种可能的设计中，接入网装置根据标签确定是否对下行数据重排序，包括：接入网装置的SDAP层根据标签确定是否对下行数据重排序。In a possible design, the access network device determines whether to reorder the downlink data according to the label, including: determining, by the SDAP layer of the access network device, whether to reorder the downlink data according to the label.

在一种可能的设计中，若接入网装置的SDAP层根据标签确定对下行数据重排序，该方法还包括：接入网装置的SDAP层向接入网装置的PDCP层发送第一指示信息，第一指示信息用于指示PDCP层对下行数据重排序。In a possible design, if the SDAP layer of the access network device determines the reordering of the downlink data according to the label, the method further includes: the SDAP layer of the access network device sends the first indication information to the PDCP layer of the access network device. The first indication information is used to instruct the PDCP layer to reorder the downlink data.

在一种可能的设计中，该方法还包括：接入网装置为源接入网装置，接入网装置的SDAP层接收结束标记信息，接入网装置在转发路径上向目标接入网装置发送结束标记信息，结束标记信息用于辅助目标接入网装置重排序；或者，接入网装置为目标接入网装置，接入网装置的SDAP层从源接入网装置接收结束标记信息，并根据结束标记信息向接入网装置的PDCP层发送第二指示信息，第二指示信息用于向接入网装置的PDCP层指示转发路径上的数据发送完毕；其中，源接入网装置为接收下行数据的终端在进行基站切换过程中的源基站，目标接入网装置为接收下行数据的终端在进行基站切换过程中的目标基站，转发路径为源基站和目标基站之间的路径。该种可能的设计，能够进一步的保证会话的连续性。In a possible design, the method further includes: the access network device is a source access network device, and the SDAP layer of the access network device receives the end tag information, and the access network device moves to the target access network device on the forwarding path. Sending end tag information, the end tag information is used to assist the target access network device to reorder; or the access network device is the target access network device, and the SDAP layer of the access network device receives the end tag information from the source access network device, And transmitting the second indication information to the PDCP layer of the access network device according to the end tag information, where the second indication information is used to indicate to the PDCP layer of the access network device that the data transmission on the forwarding path is completed; wherein the source access network device is The terminal receiving the downlink data is the source base station in the process of performing the base station handover, and the target access network device is the target base station in the process of performing the base station handover in the terminal receiving the downlink data, and the forwarding path is the path between the source base station and the target base station. This kind of possible design can further ensure the continuity of the session.

第三方面，提供了一种通信方法，该方法包括：第二网络装置获取SDF过滤器和重排序指示信息之间的对应关系，并向第一网络装置发送SDF过滤器和重排序指示信息，用于第一网络装置获取SDF过滤器和重排序指示信息之间的对应关系。In a third aspect, a communication method is provided, the method comprising: acquiring, by a second network device, a correspondence between an SDF filter and reordering indication information, and transmitting an SDF filter and reordering indication information to the first network device, And used by the first network device to acquire a correspondence between the SDF filter and the reordering indication information.

第四方面，提供了一种通信装置，包括：通信单元和处理单元；通信单元，用于接收下行数据；处理单元，用于确定与下行数据匹配的SDF过滤器，根据SDF过滤器对应的重排序指示信息为下行数据添加标签，其中，重排序指示信息用于指示SDF 是否需被重排序；若重排序指示信息指示SDF需被重排序，标签为第一标签；若重排序指示信息指示SDF不需被重排序，标签为第二标签；通信单元，还用于向接入网装置发送添加标签后的下行数据，第一标签用于指示接入网装置对下行数据重排序，第二标签用于指示接入网装置不对下行数据重排序。A fourth aspect provides a communication apparatus, including: a communication unit and a processing unit; a communication unit, configured to receive downlink data; and a processing unit, configured to determine an SDF filter that matches the downlink data, according to a weight corresponding to the SDF filter The sorting indication information is used to add a label to the downlink data, where the reordering indication information is used to indicate whether the SDF needs to be reordered; if the reordering indication information indicates that the SDF needs to be reordered, the label is the first label; if the reordering indication information indicates the SDF The tag is a second tag; the communication unit is further configured to send the tagged downlink data to the access network device, where the first tag is used to instruct the access network device to reorder the downlink data, and the second tag It is used to indicate that the access network device does not reorder the downlink data.

在一种可能的设计中，处理单元，还用于根据SDF过滤器确定SDF过滤器对应的重排序指示信息。In a possible design, the processing unit is further configured to determine reordering indication information corresponding to the SDF filter according to the SDF filter.

在一种可能的设计中，通信单元，还用于从第二网络装置接收SDF过滤器和重排序指示信息。In one possible design, the communication unit is further configured to receive the SDF filter and the reordering indication information from the second network device.

在一种可能的设计中，接入网装置为源接入网装置，若重排序指示信息用于指示SDF需被重排序；通信单元，还用于向接入网装置发送结束标记信息，结束标记信息用于辅助目标接入网装置重排序；其中，源接入网装置为接收下行数据的终端在进行基站切换过程中的源基站，目标接入网装置为接收下行数据的终端在进行基站切换过程中的目标基站。In a possible design, the access network device is a source access network device, if the reordering indication information is used to indicate that the SDF needs to be reordered, and the communication unit is further configured to send the end tag information to the access network device, and the process ends. The tag information is used to assist the target access network device reordering; wherein the source access network device is the source base station in the process of performing base station handover for the terminal receiving the downlink data, and the target access network device is the base station receiving the downlink data. The target base station during the handover.

第五方面，提供了一种通信装置，包括：通信单元和处理单元；通信单元，用于接收下行数据，下行数据携带标签，标签根据与下行数据匹配的SDF过滤器对应的重排序指示信息确定，重排序指示信息用于指示SDF是否需被重排序；若重排序指示信息指示SDF需被重排序，标签为第一标签；若重排序指示信息指示SDF不需被重排序，标签为第二标签；处理单元，用于根据标签确定是否对下行数据重排序。A fifth aspect provides a communication apparatus, including: a communication unit and a processing unit; a communication unit, configured to receive downlink data, where the downlink data carries a label, and the label is determined according to reordering indication information corresponding to the SDF filter matched with the downlink data. The reordering indication information is used to indicate whether the SDF needs to be reordered; if the reordering indication information indicates that the SDF needs to be reordered, the label is the first label; if the reordering indication information indicates that the SDF does not need to be reordered, the label is the second label. a tag; a processing unit, configured to determine, according to the tag, whether to reorder the downlink data.

在一种可能的设计中，若标签为第一标签，处理单元，具体用于根据标签确定对下行数据重排序；或者，若标签为第二标签，处理单元，具体用于根据标签确定不对下行数据重排序。In a possible design, if the label is the first label, the processing unit is specifically configured to reorder the downlink data according to the label; or, if the label is the second label, the processing unit is specifically configured to determine the downlink according to the label. Data reordering.

在一种可能的设计中，通信单元包括业务数据聚合协议SDAP层；通信单元中的SDAP层，具体用于接收下行数据。In a possible design, the communication unit includes a service data aggregation protocol SDAP layer; and the SDAP layer in the communication unit is specifically configured to receive downlink data.

在一种可能的设计中，通信单元中的SDAP层，还用于根据标签确定是否对下行数据重排序。In a possible design, the SDAP layer in the communication unit is further configured to determine whether to reorder the downlink data according to the label.

在一种可能的设计中，通信单元还包括数据分组汇聚协议PDCP层；通信单元中的SDAP层，还用于向通信单元中的PDCP层发送第一指示信息，第一指示信息用于指示PDCP层对下行数据重排序。In a possible design, the communication unit further includes a data packet convergence protocol PDCP layer; the SDAP layer in the communication unit is further configured to send first indication information to the PDCP layer in the communication unit, where the first indication information is used to indicate the PDCP The layer reorders the downlink data.

在一种可能的设计中，装置为源接入网装置，通信单元中的SDAP层，用于接收结束标记信息，并向目标接入网装置发送结束标记信息，结束标记信息用于辅助目标接入网装置重排序；或者，装置为目标接入网装置，通信单元中的SDAP层，用于从源接入网装置接收结束标记信息，并根据结束标记信息向接入网装置的PDCP层发送第二指示信息，第二指示信息用于向接入网装置的PDCP层指示转发路径上的数据发送完毕；其中，源接入网装置为接收下行数据的终端在进行基站切换过程中的源基站，目标接入网装置为接收下行数据的终端在进行基站切换过程中的目标基站，转发路径为源基站和目标基站之间的路径。In a possible design, the device is a source access network device, and the SDAP layer in the communication unit is configured to receive the end tag information, and send the end tag information to the target access network device, and the end tag information is used to assist the target connection. The network access device is reordered; or the device is a target access network device, and the SDAP layer in the communication unit is configured to receive the end tag information from the source access network device, and send the end tag information to the PDCP layer of the access network device according to the end tag information. The second indication information is used to indicate to the PDCP layer of the access network device that the data transmission on the forwarding path is completed; wherein the source access network device is the source base station in the process of performing the base station handover by the terminal receiving the downlink data. The target access network device is a target base station in which the terminal receiving the downlink data performs the base station handover process, and the forwarding path is a path between the source base station and the target base station.

第六方面，提供了一种通信装置，包括通信单元和处理单元，处理单元，用于获取SDF过滤器和重排序指示信息之间的对应关系；通信单元，用于向第一网络装置发送SDF过滤器和重排序指示信息，SDF过滤器和重排序指示信息用于第一网络装置获取SDF过滤器和重排序指示信息之间的对应关系。The sixth aspect provides a communication device, including a communication unit and a processing unit, configured to acquire a correspondence between the SDF filter and the reordering indication information, and a communication unit, configured to send the SDF to the first network device. The filter and reordering indication information, the SDF filter and the reordering indication information are used by the first network device to acquire a correspondence between the SDF filter and the reordering indication information.

第七方面，提供了一种通信装置，包括：存储器和处理器；存储器用于存储计算机执行指令，处理器执行存储器存储的计算机执行指令。该装置可以为上述第一网络装置、接入网装置或第二网络装置，当该装置为第一网络装置时，处理器执行的计算机执行指令用于使得该装置实现第一方面提供的任意一种方法；当该装置为接入网装置时，处理器执行的计算机执行指令用于使得该装置实现第二方面提供的任意一种方法；当该装置为第二网络装置时，处理器执行的计算机执行指令用于使得该装置实现第三方面提供的任意一种方法。该装置可以以芯片的产品形态存在。In a seventh aspect, a communication apparatus is provided, comprising: a memory and a processor; the memory is configured to store a computer to execute an instruction, and the processor executes the computer-executed instruction of the memory storage. The device may be the first network device, the access network device or the second network device, and when the device is the first network device, the computer executes instructions executed by the processor for causing the device to implement any one provided by the first aspect. Method; when the device is an access network device, the computer executes instructions executed by the processor for causing the device to implement any one of the methods provided by the second aspect; when the device is the second network device, the processor executes The computer executes instructions for causing the apparatus to implement any of the methods provided by the third aspect. The device can exist in the form of a chip product.

第八方面，提供了一种计算机可读存储介质，包括指令，当其在计算机上运行时，使得计算机执行第一方面、第二方面或第三方面提供的任意一种方法。In an eighth aspect, a computer readable storage medium is provided, comprising instructions that, when executed on a computer, cause the computer to perform any of the methods provided by the first aspect, the second aspect, or the third aspect.

第九方面，提供了一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机执行第一方面、第二方面或第三方面提供的任意一种方法。According to a ninth aspect, there is provided a computer program product comprising instructions which, when run on a computer, cause the computer to perform any one of the methods of the first aspect, the second aspect or the third aspect.

第四方面至第九方面中的任意一个方面中的任意一种实现方式的有益效果可以参见上述第一方面至第三方面中的相应的实现方式的有益效果，在此不再赘述。For the beneficial effects of any one of the fourth aspect to the ninth aspect, reference may be made to the beneficial effects of the corresponding implementations in the first to third aspects described above, and details are not described herein again.

附图说明DRAWINGS

图1为本申请实施例提供的EPS网络的架构示意图；FIG. 1 is a schematic structural diagram of an EPS network according to an embodiment of the present application;

图2为本申请实施例提供的一种网络装置之间的连接示意图；2 is a schematic diagram of a connection between network devices according to an embodiment of the present application;

图3为本申请实施例提供的一种NG移动通信***的架构示意图；FIG. 3 is a schematic structural diagram of an NG mobile communication system according to an embodiment of the present application;

图4为本申请实施例提供的一种5G网络的架构示意图；FIG. 4 is a schematic structural diagram of a 5G network according to an embodiment of the present disclosure;

图5为本申请实施例提供的一种网络装置的硬件结构示意图；FIG. 5 is a schematic structural diagram of hardware of a network device according to an embodiment of the present application;

图6为本申请实施例提供的一种数据处理过程示意图；FIG. 6 is a schematic diagram of a data processing process according to an embodiment of the present application;

图7为本申请实施例提供的一种通信方法的流程图；FIG. 7 is a flowchart of a communication method according to an embodiment of the present application;

图8为本申请实施例提供的又一种通信方法的流程图；FIG. 8 is a flowchart of still another communication method according to an embodiment of the present application;

图9为本申请实施例提供的一种网络装置的组成示意图。FIG. 9 is a schematic structural diagram of a network device according to an embodiment of the present application.

具体实施方式Detailed ways

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描述。其中，在本申请的描述中，除非另有说明，“/”表示或的意思，例如，A/B可以表示A或B；本文中的“和/或”仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，在本申请的描述中，“多个”是指两个或多于两个。The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application. In the description of the present application, unless otherwise stated, "/" means the meaning of or, for example, A/B may represent A or B; "and/or" herein is merely an association describing the associated object. The relationship indicates that there may be three kinds of relationships, for example, A and/or B, which may indicate that there are three cases where A exists separately, A and B exist at the same time, and B exists separately. In addition, in the description of the present application, "a plurality" means two or more than two.

本申请实施例提供的方法可以应用于无线通信***，例如：演进分组***(evolved packet system，简称EPS)(即通常所说的4G网络)、5G无线通信***、新空口(new radio，简称NR)***或下一代(next generation，简称NG)移动通信***等。The method provided by the embodiment of the present application can be applied to a wireless communication system, for example, an evolved packet system (EPS) (so-called 4G network), a 5G wireless communication system, and a new radio (NR). System or next generation (NG) mobile communication system.

示例性的，EPS的网络架构可参见图1，主要包括：终端、演进型通用陆地无线接入网(evolved universal terrestrial radio access network，简称E-UTRAN)(具体可以为演进型基站(evolved node B，简称eNodeB))，移动性管理网元(mobility management entity，简称MME)，业务网关(serving gateway，简称SGW)，分组数据网关(packet data network gateway，简称PGW)，服务通用分组无线服务支持节点(serving general packet radio service support node，简称SGSN)，归属用户服务器(home subscriber server，简称HSS)和策略和计费规则功能(policy and charging rules function，简称PCRF)等网元。For example, the network architecture of the EPS can be seen in FIG. 1 , which mainly includes: a terminal, an evolved universal terrestrial radio access network (E-UTRAN) (specifically, an evolved base station (evolved node B) , abbreviated as eNodeB)), mobility management entity (MME), service gateway (SGW), packet data network gateway (PGW), service general packet radio service support node A network element such as a serving general packet radio service support node (SGSN), a home subscriber server (HSS), and a policy and charging rules function (PCRF).

其中，参见图2，EUTRAN由多个eNodeB组成，用于实现无线物理层功能、资源调度和无线资源管理、无线接入控制以及移动性管理功能。eNodeB之间可以通过X2接口相连，可以在基于X2的切换过程中用来传输数据。eNodeB通过用户面接口S1-U和SGW相连，使用通用分组无线服务隧道协议用户面(general packet radio service tunneling protocol user plane，简称GTP-U)来传送用户数据；通过控制面接口S1-MME和MME相连，采用S1应用层(S1-application，简称S1-AP)协议实现无线接入承载控制等功能。Referring to FIG. 2, the EUTRAN is composed of multiple eNodeBs for implementing physical layer functions, resource scheduling, radio resource management, radio access control, and mobility management functions. The eNodeBs can be connected through the X2 interface and can be used to transfer data during the X2-based handover process. The eNodeB is connected to the SGW through the user plane interface S1-U, and uses the general packet radio service tunneling protocol user plane (GTP-U) to transmit user data; through the control plane interface S1-MME and MME. Connected, the S1 application layer (S1-application, S1-AP for short) protocol is used to implement radio access bearer control and other functions.

MME主要负责用户即会话(Session)管理的所有控制平面功能，包括非接入层(non-access stratum，简称NAS)信令及安全，跟踪区列表(tracking area list)的管理，PGW与SGW的选择等。The MME is mainly responsible for all control plane functions of the user, that is, session management, including non-access stratum (NAS) signaling and security, tracking area list management, PGW and SGW. Choose and so on.

SGW主要负责终端的数据传输、转发以及路由切换等，并作为终端在eNodeB之间切换时的本地移动性锚定点(对于每一个终端，每个时刻仅有一个SGW为之服务)。The SGW is mainly responsible for data transmission, forwarding, and route switching of the terminal, and serves as a local mobility anchor point when the terminal switches between eNodeBs (for each terminal, only one SGW is served at each moment).

PGW作为分组数据网络(packet date network，简称PDN)连接的锚定点，负责终端的互联网协议(internet protocol，简称IP)地址分配，终端的数据报文过滤、速率控制、生成计费信息等。As the anchor point of the packet data network (PDN) connection, the PGW is responsible for the Internet protocol (IP) address allocation of the terminal, data packet filtering, rate control, and generation of charging information of the terminal.

SGSN为2G接入网GSM/EDGE无线接入网络(GSM/EDGE radio access network，简称GERAN)，3G接入网通用陆地无线接入网(universal terrestrial radio access network，简称UTRAN)与EPS核心网(即演进分组核心(evolved packet core，简称EPC)网)的接入节点，负责从GERAN，UTRAN到EPC承载的建立和数据的转发。其中，GSM为全球移动通信(global system of mobile communication)***，EDGE为增强型数据速率GSM演进(enhanced data rate for GSM evolution)技术。The SGSN is a 2G access network GSM/EDGE radio access network (GERAN), a 3G access network universal terrestrial radio access network (UTRAN) and an EPS core network ( That is, an access node of an evolved packet core (EPC) network is responsible for establishing and forwarding data from GERAN, UTRAN to EPC bearers. Among them, GSM is a global system of mobile communication system, and EDGE is an enhanced data rate for GSM evolution technology.

HSS用于存储移动用户的签约数据。The HSS is used to store subscription data for mobile users.

PCRF负责计费管理和策略控制，包括策略与计费控制(policy and charging control，简称PCC)规则，QoS规则。The PCRF is responsible for billing management and policy control, including policy and charging control (PCC) rules and QoS rules.

示例性的，NG移动通信***的架构可参见图3。NG***中包括NG终端，NG(无线)接入网((radio)access network，简称(R)AN)，NG核心(core)网和数据网络(data network，简称DN)。其中，NG终端，NG(R)AN，NG核心网为该架构中的主要组成部分，逻辑上这些网元可以包括用户面(user plane，简称UP)和控制面(control plane，简称CP)两部分，控制面负责移动网络的管理，用户面负责业务数据的传输。Exemplarily, the architecture of the NG mobile communication system can be seen in FIG. 3. The NG system includes an NG terminal, an NG (radio) access network (referred to as (R) AN), an NG core network, and a data network (DN). The NG terminal, the NG (R) AN, and the NG core network are the main components of the architecture. The logical network elements may include a user plane (UP plane) and a control plane (CP). In part, the control plane is responsible for the management of the mobile network, and the user plane is responsible for the transmission of service data.

其中，NG2参考点位于NG(R)AN控制面和NG核心网控制面之间，NG3参考点位于NG(R)AN用户面和NG核心网用户面之间，NG6参考点位于NG核心网用户面和DN之间。The NG2 reference point is located between the NG(R)AN control plane and the NG core network control plane, the NG3 reference point is located between the NG(R)AN user plane and the NG core network user plane, and the NG6 reference point is located at the NG core network user. Between the face and the DN.

其中，NG终端是移动用户与网络交互的入口，能够提供基本的计算能力，存储能力，向用户显示业务窗口，接受用户操作输入。NG终端会采用下一代空口技术，与NG(R)AN建立信号连接，数据连接，从而传输控制信号和业务数据到移动网络。The NG terminal is an entry point for the mobile user to interact with the network, and can provide basic computing power, storage capability, display a service window to the user, and accept user operation input. The NG terminal will adopt the next-generation air interface technology to establish a signal connection and data connection with the NG(R)AN to transmit control signals and service data to the mobile network.

NG(R)AN，类似于传统网络里面的基站，部署在靠近NG终端的位置，为特定区域的授权用户提供入网功能，并能够根据用户的级别，业务的需求等使用不同质量的传输隧道传输用户数据。NG(R)AN能够管理自身的资源，合理利用，按需为NG终端提供接入服务，把控制信号和用户数据在NG终端和核心网之间转发。NG(R)AN, similar to the base station in the traditional network, is deployed close to the NG terminal, provides network access functions for authorized users in specific areas, and can transmit using different quality transmission tunnels according to user level and service requirements. User data. NG(R)AN can manage its own resources, make reasonable use, provide access services for NG terminals as needed, and forward control signals and user data between NG terminals and core networks.

NG核心网，负责维护移动网络的签约数据，管理移动网络的网元，为NG终端提供会话管理，移动性管理，策略管理，安全认证等功能。在NG终端附着的时候，为NG终端提供入网认证；在NG终端有业务请求时，为NG终端分配网络资源；在NG终端移动的时候，为NG终端更新网络资源；在NG终端空闲的时候，为NG终端提供快恢复机制；在NG终端去附着的时候，为NG终端释放网络资源；在NG终端有业务数据时，为NG终端提供数据路由功能，如转发上行数据到DN；或者从DN接收下行数据，转发到NG(R)AN，从而发送给NG终端。The NG core network is responsible for maintaining the subscription data of the mobile network, managing the network elements of the mobile network, and providing functions such as session management, mobility management, policy management, and security authentication for the NG terminal. When the NG terminal is attached, it provides network authentication for the NG terminal; when the NG terminal has a service request, allocates network resources for the NG terminal; when the NG terminal moves, updates the network resource for the NG terminal; when the NG terminal is idle, Providing a fast recovery mechanism for the NG terminal; releasing the network resource for the NG terminal when the NG terminal is detached; providing the data routing function for the NG terminal, such as forwarding the uplink data to the DN when the NG terminal has the service data; or receiving from the DN The downlink data is forwarded to the NG(R) AN and sent to the NG terminal.

DN是为用户提供业务服务的数据网络，一般客户端位于NG终端，服务端位于数据网络。数据网络可以是私有网络，如局域网，也可以是不受运营商管控的外部网络，如因特网(internet)，还可以是运营商共同部署的专有网络，如为了配置网络互连协议多媒体子***(internet protocol multimedia subsystem，简称IMS)服务。The DN is a data network that provides services for users. The general client is located at the NG terminal and the server is located at the data network. The data network can be a private network, such as a local area network, or an external network that is not controlled by the operator, such as the Internet, or a proprietary network deployed by the operator, such as a multimedia subsystem for configuring the network interconnection protocol. (internet protocol multimedia subsystem, referred to as IMS) service.

基于图3确定的5G网络架构可参见图4，5G网络可以包括下述多个网络功能(network functions，简称NF)实体：鉴权服务器功能(authentication server function，简称AUSF)网元、接入和移动管理功能(core access and mobility management function，简称AMF)网元、DN、统一数据管理(unified data management，简称UDM)网元、策略控制功能(policy control function，简称PCF)网元、(R)AN设备、用户面功能(user plane function，简称UPF)网元、终端、应用功能(application function，简称AF)网元、会话管理功能(session management function，简称SMF)网元。The 5G network architecture determined based on FIG. 3 can be seen in FIG. 4. The 5G network may include multiple network functions (NF functions) entities: an authentication server function (AUSF) network element, access and Core access and mobility management function (AMF) network element, DN, unified data management (UDM) network element, policy control function (PCF) network element, (R) The user equipment, the user plane function (UPF) network element, the terminal, the application function (AF) network element, and the session management function (SMF) network element.

可理解的是，图4仅为示例性架构图，除图4所示功能实体之外，该5G网络架构还可以包括其他功能实体，例如，在AF实体和PCF实体之间还可能包括网络开放功能(network exposure function，简称NEF)实体。It can be understood that FIG. 4 is only an exemplary architecture diagram. In addition to the functional entity shown in FIG. 4, the 5G network architecture may also include other functional entities, for example, an open network may also be included between the AF entity and the PCF entity. Network exposure function (NEF) entity.

其中，核心网UP包括UPF，核心网CP包括AUSF、AMF、SMF、UDM、PCF和AF。The core network UP includes a UPF, and the core network CP includes an AUSF, an AMF, an SMF, a UDM, a PCF, and an AF.

其中，UPF用于根据SMF的路由规则执行用户数据包转发。AUSF用于执行终端的安全认证。AMF用于对终端进行接入管理和移动性管理。SMF用于对终端进行会话管理。UDM用于对用户的签约上下文进行管理。PCF用于对用户进行策略管理。AF用于对用户进行应用管理。The UPF is configured to perform user data packet forwarding according to the routing rule of the SMF. AUSF is used to perform security authentication of the terminal. AMF is used for access management and mobility management of terminals. The SMF is used for session management of the terminal. UDM is used to manage the user's subscription context. PCF is used for policy management of users. AF is used for application management of users.

如图5所示，为本申请实施例提供的一种网络装置50的硬件结构示意图，该网络装置50可以为终端或基站，该网络装置50包括至少一个处理器501，通信总线502，存储器503以及至少一个通信接口504。FIG. 5 is a schematic diagram showing the hardware structure of a network device 50 according to an embodiment of the present application. The network device 50 may be a terminal or a base station, and the network device 50 includes at least one processor 501, a communication bus 502, and a memory 503. And at least one communication interface 504.

处理器501可以是一个通用中央处理器(central processing unit，简称CPU)，微处理器，特定应用集成电路(application-specific integrated circuit，简称ASIC)，或一个或多个用于控制本申请方案程序执行的集成电路。The processor 501 can be a general central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more programs for controlling the program of the present application. Execution of the integrated circuit.

通信总线502可包括一通路，在上述组件之间传送信息。Communication bus 502 can include a path for communicating information between the components described above.

通信接口504，可以为任何收发器一类的装置，用于与其他设备或通信网络通信，如以太网，RAN，无线局域网(wireless local area networks，简称WLAN)等。The communication interface 504 can be any device such as a transceiver for communicating with other devices or communication networks, such as Ethernet, RAN, wireless local area networks (WLAN), and the like.

存储器503可以是只读存储器(read-only memory，简称ROM)或可存储静态信息和指令的其他类型的静态存储设备，随机存取存储器(random access memory，简称RAM)或者可存储信息和指令的其他类型的动态存储设备，也可以是电可擦可编程只读存储器(electrically erasable programmable read-only memory，简称EEPROM)、只读光盘(compact disc read-only memory，简称CD-ROM)或其他光盘存储、光碟存储(包括压缩光碟、激光碟、光碟、数字通用光碟、蓝光光碟等)、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。存储器可以是独立存在，通过总线与处理器相连接。存储器也可以和处理器集成在一起。The memory 503 may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or a device that can store information and instructions. Other types of dynamic storage devices may also be electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical discs. Storage, optical storage (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic storage media or other magnetic storage devices, or capable of carrying or storing desired program code in the form of instructions or data structures And any other medium that can be accessed by a computer, but is not limited thereto. The memory can exist independently and be connected to the processor via a bus. The memory can also be integrated with the processor.

其中，存储器503用于存储执行本申请方案的应用程序代码，并由处理器501来控制执行。处理器501用于执行存储器503中存储的应用程序代码，从而实现下文中本申请实施例提供的方法。The memory 503 is used to store application code for executing the solution of the present application, and is controlled by the processor 501 for execution. The processor 501 is configured to execute the application code stored in the memory 503, thereby implementing the method provided in the embodiments of the present application.

在具体实现中，作为一种实施例，处理器501可以包括一个或多个CPU，例如图5中的CPU0和CPU1。In a specific implementation, as an embodiment, the processor 501 may include one or more CPUs, such as CPU0 and CPU1 in FIG.

在具体实现中，作为一种实施例，网络装置50可以包括多个处理器，例如图5中的处理器501和处理器508。这些处理器中的每一个可以是一个单核(single-CPU)处理器，也可以是一个多核(multi-CPU)处理器。这里的处理器可以指一个或多个设备、电路、和/或用于处理数据(例如计算机程序指令)的处理核。In a particular implementation, as an embodiment, network device 50 may include multiple processors, such as processor 501 and processor 508 in FIG. Each of these processors can be a single-CPU processor or a multi-core processor. A processor herein may refer to one or more devices, circuits, and/or processing cores for processing data, such as computer program instructions.

在具体实现中，作为一种实施例，网络装置50还可以包括输出设备505和输入设备506。In a particular implementation, as an embodiment, network device 50 may also include an output device 505 and an input device 506.

PDCP是一个无线传输协议栈，能够通过数据的重排序保证数据有序的在终端和接入网装置之间传输。具体的，参见图6，在终端进行接入网装置切换的过程中，终端会切换服务的接入网装置，从源接入网装置切换至目标接入网装置。其中，源接入网装置即在终端切换之前为终端服务的接入网装置，目标接入网装置即在终端切换之后为终端服务的接入网装置。在切换过程中，终端会以1:1的比例关系，建立基于旧路径(S1承载，无线承载(radio bearer，简称RB)等)的转发承载。PDCP is a wireless transmission protocol stack that ensures data orderly transmission between terminals and access network devices through data reordering. Specifically, referring to FIG. 6, in the process of the terminal performing the handover of the access network device, the terminal switches the access network device of the service, and switches from the source access network device to the target access network device. The source access network device is an access network device that serves the terminal before the terminal switches, and the target access network device is an access network device that serves the terminal after the terminal is switched. During the handover process, the terminal establishes a forwarding bearer based on the old path (S1 bearer, radio bearer (RB), etc.) in a 1:1 ratio.

在切换过程中，通过以下过程处理数据：(1)源接入网装置在转发路径上优先向目标接入网装置传输源接入网装置中未传输的PDCP数据，这些PDCP数据为经过PDCP层分包的数据；(2)源接入网装置将UP在旧路径上发送过来的新下行数据在转发路径上向目标接入网装置传输，新下行数据为未经过PDCP层分包的数据；(3)UP切换下行路径时，在旧路径上发送结束标记(end marker)，结束标记用于指示在旧路径上的数据发送完毕，源接入网装置根据该结束标记停止在转发路径上发送数据；(4)目标接入网装置优先处理在转发路径上接收到的数据；(5)若在接收到结束标记之前目标接入网装置接收到了在新路径上发送的下行数据，目标接入网装置将这些下行数据进行缓冲；(6)目标接入网装置接收结束标记，采用在接收结束标记之前处理过的PDCP的最大序号(sequence number，简称SN)号，继续对缓冲中的数据进行处理。以此顺序处理切换过程中的数据转发，从而使得结束标记能够辅助目标接入网装置对数据进行重排序。In the handover process, the data is processed by the following process: (1) The source access network device preferentially transmits the PDCP data that is not transmitted in the source access network device to the target access network device on the forwarding path, and the PDCP data is through the PDCP layer. (2) The source access network device transmits the new downlink data sent by the UP on the old path to the target access network device on the forwarding path, and the new downlink data is data that has not been packetized by the PDCP layer; (3) When the UP switches the downlink path, an end marker is sent on the old path, and the end marker is used to indicate that the data transmission on the old path is completed, and the source access network device stops transmitting on the forwarding path according to the end marker. Data; (4) the target access network device preferentially processes the data received on the forwarding path; (5) if the target access network device receives the downlink data sent on the new path before receiving the end marker, the target access The network device buffers the downlink data; (6) the target access network device receives the end tag, and adopts the maximum sequence number (SN) number of the PDCP processed before receiving the end tag. Continues to buffer data for processing. The data forwarding during the handover process is processed in this order so that the end marker can assist the target access network device to reorder the data.

本申请实施例提供的方法通过UP把重排序指示(delivery order)信息携带给接入网装置，接入网装置根据UP的数据的信息，决策是否在终端切换的时候为下行数据执行重排序功能。The method provided by the embodiment of the present application carries the reordering order information to the access network device by using the UP, and the access network device determines whether to perform the reordering function for the downlink data when the terminal switches according to the information of the UP data. .

本申请实施例提供了一种通信方法，如图7所示，该方法可以包括：The embodiment of the present application provides a communication method. As shown in FIG. 7, the method may include:

701、第一网络装置接收下行数据。701. The first network device receives downlink data.

示例性的，第一网络装置可以为UPF。第一网络装置可以从DN接收下行数据。Illustratively, the first network device can be a UPF. The first network device can receive downlink data from the DN.

702、第一网络装置确定与下行数据匹配的业务数据流(service data flow，简称SDF)过滤器。702. The first network device determines a service data flow (SDF) filter that matches the downlink data.

与下行数据匹配的SDF过滤器所包含的部分或全部信息和下行数据的报文头中的部分或全部信息相同。其中，下行数据的报文头中的信息和SDF过滤器所包含的信息包括源IP地址，目的IP地址，源端口，目的端口等信息。Some or all of the information contained in the SDF filter matching the downlink data is the same as some or all of the information in the header of the downlink data. The information in the packet header of the downlink data and the information included in the SDF filter include information such as a source IP address, a destination IP address, a source port, and a destination port.

703、第一网络装置根据SDF过滤器对应的重排序指示信息为下行数据添加标签。703. The first network device adds a label to the downlink data according to the reordering indication information corresponding to the SDF filter.

其中，重排序指示信息用于指示SDF是否需被重排序；若重排序指示信息指示SDF需被重排序，标签为第一标签；若重排序指示信息指示SDF不需被重排序，标签为第二标签。The reordering indication information is used to indicate whether the SDF needs to be reordered; if the reordering indication information indicates that the SDF needs to be reordered, the label is the first label; if the reordering indication information indicates that the SDF does not need to be reordered, the label is the first Two labels.

其中，SDF可以为SDF过滤器标识的SDF，也可以为通过其他方式标识的SDF。标签可以添加在下行数据的报文头中。The SDF may be an SDF identified by the SDF filter or an SDF identified by other means. Tags can be added to the header of the downstream data.

可选的，上述方法还可以包括：第一网络装置根据SDF过滤器确定SDF过滤器对应的重排序指示信息。该可选的方法可以执行在步骤703之前。Optionally, the foregoing method may further include: determining, by the first network device, the reordering indication information corresponding to the SDF filter according to the SDF filter. This optional method can be performed before step 703.

可选的，第一网络装置可以根据SDF过滤器和重排序指示信息之间的对应关系确定SDF过滤器对应的重排序指示信息。其中，SDF过滤器和重排序指示信息可以一一对应，也可以多个SDF过滤器对应一个重排序指示信息。Optionally, the first network device may determine reordering indication information corresponding to the SDF filter according to the correspondence between the SDF filter and the reordering indication information. The SDF filter and the reordering indication information may be in one-to-one correspondence, or the multiple SDF filters may correspond to one reordering indication information.

示例性的，若SDF过滤器有4个，分别为SDF过滤器1、SDF过滤器2、SDF过滤器3和SDF过滤器4，其对应的重排序指示信息可以参见表1。若SDF1和SDF3对应的重排序指示信息相同，SDF2和SDF4对应的重排序指示信息相同，则4个SDF过滤器对应的重排序指示信息可以参见表2。Exemplarily, if there are four SDF filters, namely SDF filter 1, SDF filter 2, SDF filter 3 and SDF filter 4, the corresponding reordering indication information can be seen in Table 1. If the reordering indication information corresponding to SDF1 and SDF3 is the same, and the reordering indication information corresponding to SDF2 and SDF4 is the same, the reordering indication information corresponding to the four SDF filters may be referred to Table 2.

表1Table 1

SDF过滤器SDF filter	重排序指示信息Reordering instructions

SDF过滤器1SDF filter 1	重排序指示信息1 Reordering information 1
SDF过滤器2 SDF filter 2	重排序指示信息2 Reordering information 2
SDF过滤器3 SDF filter 3	重排序指示信息3 Reordering instruction 3
SDF过滤器4SDF filter 4	重排序指示信息4Reordering instruction 4

表2Table 2

可选的，在步骤703之前，该方法还可以包括：11)第二网络装置获取SDF过滤器和重排序指示信息之间的对应关系，并向第一网络装置发送SDF过滤器和重排序指示信息；12)第一网络装置从第二网络装置接收SDF过滤器和重排序指示信息。需要说明的是，第一网络装置接收到SDF过滤器和重排序指示信息之后，默认其存在对应关系。Optionally, before step 703, the method may further include: 11) the second network device acquiring the correspondence between the SDF filter and the reordering indication information, and sending the SDF filter and the reordering indication to the first network device. Information; 12) The first network device receives the SDF filter and the reordering indication information from the second network device. It should be noted that after receiving the SDF filter and the reordering indication information, the first network device defaults to the corresponding relationship.

示例性的，SDF过滤器和重排序指示信息之间的对应关系可参见表1或表2。Exemplarily, the correspondence between the SDF filter and the reordering indication information can be seen in Table 1 or Table 2.

示例性的，第二网络装置可以为SMF。Exemplarily, the second network device can be an SMF.

步骤11)在具体实现时，第二网络装置可以从PCF接收重排序指示信息和SDF过滤器，该情况下，第二网络装置确定接收到的SDF过滤器和重排序指示信息存在对应关系。PCF可以根据一些规则或策略确定SDF过滤器和重排序指示信息，也可以从NEF中获取SDF过滤器和重排序指示信息。Step 11) In a specific implementation, the second network device may receive the reordering indication information and the SDF filter from the PCF. In this case, the second network device determines that the received SDF filter and the reordering indication information have a corresponding relationship. The PCF may determine the SDF filter and the reordering indication information according to some rules or policies, and may also obtain the SDF filter and the reordering indication information from the NEF.

示例性的，PCF向第二网络装置发送的重排序指示信息和SDF过滤器可以包含在PCC规则(rule)中。PCC规则中还可以包括和会话相关的规则或其他信息。Exemplarily, the reordering indication information and the SDF filter sent by the PCF to the second network device may be included in a PCC rule. Rules or other information related to the session may also be included in the PCC rules.

需要说明的是，在第二网络装置从PCF接收重排序指示信息之后，第二网络装置可以将重排序指示信息相同的SDF绑定在一个Qos flow上，此时重排序指示的粒度相当于QoS flow粒度。如果一个会话中所有SDF的重排序指示信息均相同，此时控制粒度相当于会话粒度。It should be noted that, after the second network device receives the reordering indication information from the PCF, the second network device may bind the SDF with the same reordering indication information to a QoS flow, and the granularity of the reordering indication is equivalent to the QoS. Flow granularity. If the reordering indication information of all SDFs in a session is the same, the control granularity is equivalent to the session granularity.

704、第一网络装置向接入网装置发送添加标签后的下行数据。相应的，接入网装置接收下行数据，下行数据携带标签。704. The first network device sends the added downlink data to the access network device. Correspondingly, the access network device receives downlink data, and the downlink data carries a label.

第一标签用于指示接入网装置对下行数据重排序，第二标签用于指示接入网装置不对下行数据重排序。The first label is used to indicate that the access network device reorders the downlink data, and the second label is used to indicate that the access network device does not reorder the downlink data.

可选的，接入网装置接收下行数据，包括:接入网装置的业务数据聚合协议(service data adaptation protocol，简称SDAP)层接收下行数据。Optionally, the access network device receives the downlink data, and the service data adaptation protocol (SDAP) layer of the access network device receives the downlink data.

705、接入网装置根据标签确定是否对下行数据重排序。705. The access network device determines, according to the label, whether to reorder the downlink data.

可选的，步骤705在具体实现时可以包括：接入网装置的SDAP层根据标签确定是否对下行数据重排序。Optionally, the step 705 may include: determining, by the SDAP layer of the access network device, whether to reorder the downlink data according to the label.

具体的，接入网装置可以根据下行数据的报文头中的标签确定是否对下行数据重排序。可选的，步骤705在具体实现时可以包括：若标签为第一标签，接入网装置根据标签确定对下行数据重排序，具体可以为接入网装置的SDAP层根据标签确定对下行数据重排序；或者，若标签为第二标签，接入网装置根据标签确定不对下行数据重排序，具体可以为接入网装置的SDAP层根据标签确定不对下行数据重排序。Specifically, the access network device may determine whether to reorder the downlink data according to the label in the packet header of the downlink data. Optionally, the step 705 may include: if the label is the first label, the access network device determines, according to the label, reordering the downlink data, where the SDAP layer of the access network device determines that the downlink data is heavy according to the label. Or, if the label is the second label, the access network device determines, according to the label, that the downlink data is not reordered. Specifically, the SDAP layer of the access network device determines, according to the label, that the downlink data is not reordered.

可选的，若接入网装置的SDAP层根据标签确定对下行数据重排序，上述方法还可以包括：接入网装置的SDAP层向接入网装置的PDCP层发送第一指示信息，第一指示信息用于指示PDCP层对下行数据重排序。Optionally, if the SDAP layer of the access network device determines the reordering of the downlink data according to the label, the method may further include: sending, by the SDAP layer of the access network device, the first indication information to the PDCP layer of the access network device, where The indication information is used to instruct the PDCP layer to reorder the downlink data.

若上述接入网装置为源接入网装置、且重排序指示信息用于指示SDF需被重排序，上述方法还可以包括：21)第一网络装置向接入网装置发送结束标记信息，结束标记信息用于辅助目标接入网装置重排序；22)接入网装置的SDAP层接收结束标记信息，接入网装置在转发路径上向目标接入网装置发送结束标记信息，结束标记信息用于辅助目标接入网装置重排序。步骤21)和22)可以执行在步骤704之后。If the access network device is a source access network device, and the reordering indication information is used to indicate that the SDF needs to be reordered, the method may further include: 21) the first network device sends the end tag information to the access network device, and ends. The tag information is used to assist the target access network device to reorder; 22) the SDAP layer of the access network device receives the end tag information, and the access network device transmits the end tag information to the target access network device on the forwarding path, and ends the tag information. Reordering the secondary target access network device. Steps 21) and 22) can be performed after step 704.

若上述接入网装置为目标接入网装置，则上述方法还可以包括：31)源接入网装置在转发路径上向目标接入网装置发送结束标记信息，结束标记信息用于辅助接入网装置重排序；32)接入网装置的SDAP层从源接入网装置接收结束标记信息，并根据结束标记信息向接入网装置的PDCP层发送第二指示信息，第二指示信息用于向接入网装置的PDCP层指示转发路径上的数据发送完毕。If the access network device is the target access network device, the method may further include: 31) the source access network device sends the end tag information to the target access network device on the forwarding path, and the end tag information is used for the auxiliary access. The network device reorders; 32) the SDAP layer of the access network device receives the end tag information from the source access network device, and sends the second indication information to the PDCP layer of the access network device according to the end tag information, where the second indication information is used. The PDCP layer of the access network device indicates that the data transmission on the forwarding path is completed.

这两种情况下，下行数据可以为第一网络装置向接入网装置发送的最后一个数据。In both cases, the downlink data may be the last data transmitted by the first network device to the access network device.

其中，源接入网装置为接收下行数据的终端在进行基站切换过程中的源基站，目标接入网装置为接收下行数据的终端在进行基站切换过程中的目标基站，转发路径为源基站和目标基站之间的路径。The source access network device is a source base station in which the terminal receiving the downlink data performs the base station handover process, and the target access network device is the target base station in the process of performing the base station handover in the terminal receiving the downlink data, and the forwarding path is the source base station and The path between the target base stations.

在通用移动通信***(universal mobile telecommunications system，简称UMTS)中，定义了重排序指示参数，目前只能通过信令面通知RAN，重排序指示的粒度只能到QoS flow，重排序指示的粒度也不能灵活调整。本申请实施例提供的方法，可以通过用户面传输重排序指示信息，并且通过将重排序指示信息相同的SDF与QoS flow进行绑定，从而可以灵活调整重排序指示的粒度。In the universal mobile telecommunications system (UMTS), the reordering indication parameter is defined. Currently, the RAN can only be notified through the signaling plane. The granularity of the reordering indication can only be QoS flow, and the granularity of the reordering indication is also Can not be adjusted flexibly. The method provided by the embodiment of the present application can transmit the reordering indication information through the user plane, and bind the SDF with the same reordering indication information to the QoS flow, so that the granularity of the reordering indication can be flexibly adjusted.

在5G网络中，由于QoS flow是SMF在建立PDU会话或者修改PDU会话的时候绑定到会话上的，因此，SMF在建立PDU会话或者修改PDU会话时，需要明确QoS flow是否需要重排序传输。但是，目前5G标准中定义的QoS Profile中不包含重排序指示参数。本申请实施例提供的方法，不需要核心网通过信令传输重排序指示信息，可以降低信令开销。In a 5G network, the QoS flow is bound to the session when the SMF establishes a PDU session or modifies the PDU session. Therefore, when establishing a PDU session or modifying a PDU session, the SMF needs to specify whether the QoS flow needs reordering transmission. However, the QoS Profile defined in the current 5G standard does not include the reordering indication parameter. The method provided by the embodiment of the present application does not require the core network to transmit reordering indication information through signaling, which can reduce signaling overhead.

本申请实施例中，重排序指示的粒度是SDF粒度的，若SMF要修改协议数据单元(protocol data unit，简称PDU)会话中的SDF的会话连续性属性，可以直接向UPF发送更新指示，没有必要通知RAN侧，可以降低核心网到RAN的信令开销。In the embodiment of the present application, the granularity of the reordering indication is SDF granularity. If the SMF wants to modify the session continuity attribute of the SDF in the protocol data unit (PDU) session, the update indication may be directly sent to the UPF. It is necessary to notify the RAN side to reduce the signaling overhead of the core network to the RAN.

本申请实施例提供的方法，接入网装置可以根据下行数据携带的标签确定是否对下行数据重排序，由于下行数据携带的标签根据与下行数据匹配的SDF过滤器对应的重排序指示信息确定，因此，实现了SDF粒度的重排序指示，从而使得网络可以根据SDF的需求确定是否对所属于SDF的下行数据重排序，满足不同的业务的需求。In the method provided by the embodiment of the present application, the access network device may determine, according to the label carried by the downlink data, whether the downlink data is reordered, and the label carried by the downlink data is determined according to the reordering indication information corresponding to the SDF filter that matches the downlink data, Therefore, the reordering indication of the SDF granularity is implemented, so that the network can determine whether to reorder the downlink data belonging to the SDF according to the requirements of the SDF, and meet the requirements of different services.

以下通过具体的步骤对上述实施例提供的方法进行示例性说明，其中，可以在AN/SMF/PCF中配置重排序的本地策略，在UDM中配置终端的签约数据，下文中以上述方法执行在PDU会话建立或修改的过程中为例进行说明，参见图8，该方法可以包括：The method provided in the foregoing embodiment is exemplified by a specific step, wherein a reordered local policy may be configured in the AN/SMF/PCF, and the subscription data of the terminal is configured in the UDM, and the following method is performed in the foregoing method. An example is described in the process of establishing or modifying a PDU session. Referring to FIG. 8, the method may include:

801、SMF从UDM获取终端的签约数据。801. The SMF obtains subscription data of the terminal from the UDM.

其中，终端的签约数据可以包括重排序指示的粒度。示例性的，重排序指示的粒度可以为终端粒度，该情况下，终端的全部业务的数据均重排序。重排序指示的粒度还可以为Qos flow的类型，例如，Qos flow的类型为保证比特率(guaranteed bit rate，简称GBR)flow时，终端的该类型的业务的数据均重排序。重排序指示的粒度还可以为5G QoS标识(5G QoS identifier，简称5QI)，该情况下，对应该5QI的Qos flow的类型的业务的数据均重排序。The subscription data of the terminal may include a granularity of the reordering indication. Exemplarily, the granularity of the reordering indication may be the terminal granularity, in which case the data of all services of the terminal are reordered. The granularity of the reordering indication may also be a type of the QoS flow. For example, when the type of the QoS flow is a guaranteed bit rate (GBR) flow, the data of the type of service of the terminal is reordered. The granularity of the reordering indication may also be a 5G QoS identifier (5Q QoS identifier, 5QI for short). In this case, the data of the service of the type of the Qos flow of the 5QI is reordered.

802、SMF向PCF发送终端的签约数据。相应的，PCF从SMF接收终端的签约数据。802. The SMF sends the subscription data of the terminal to the PCF. Correspondingly, the PCF receives the subscription data of the terminal from the SMF.

803、PCF从AF/统一数据库(unified data repository，简称UDR)/NEF/网络数据分析功能实体(network data analytics function，简称NWDAF)收集业务相关信息。803. The PCF collects service related information from an AF/Unified Data Repository (UDR)/NEF/network data analytics function (NWDAF).

其中，业务相关信息可以包括SDF过滤器，业务领域(休闲娱乐，金融，实时通信，新闻，监控等)，业务类型(视频，网页浏览，电话，游戏等)，业务可靠协议(快速用户数据报协议网络连接(quick user datagram protocol internet connections，简称QUIC)/多路传输控制协议(multipath transmission control protocol，简称MPTCP)/分布式移动性管理(distributed mobility management，简称DMM)等)，业务是否可以丢包等这些SDF属性中的至少一个，还可以包括业务粒度的统计信息，如哪些业务在哪些领域可以丢包，哪些业务如果丢包会严重影响用户体验等信息。Among them, business related information may include SDF filters, business areas (leisure, finance, real-time communication, news, monitoring, etc.), business types (video, web browsing, telephone, games, etc.), business reliability agreements (fast user datagrams) Quick user datagram protocol internet connections (QUIC)/multipath transmission control protocol (MPTCP)/distributed mobility management (DMM), etc. At least one of the SDF attributes, such as a packet, may also include statistics of the service granularity, such as which services can be dropped in which areas, and which services may seriously affect the user experience and the like.

804、PCF根据终端的签约数据、业务相关信息和本地策略，确定在终端进行基站切换的过程中SDF是否需被重排序。804. The PCF determines, according to the subscription data of the terminal, the service-related information, and the local policy, whether the SDF needs to be reordered in the process of performing handover of the base station by the terminal.

具体实现时，PCF可以根据终端的签约数据、业务相关信息和本地策略中的一个或多个确定SDF是否需被重排序。In a specific implementation, the PCF may determine whether the SDF needs to be reordered according to one or more of the subscription data, the service related information, and the local policy of the terminal.

示例性的，若PCF根据本地策略确定SDF是否需被重排序，则当重排序指示的粒度为GBR flow时，PCF可以确定Qos flow的类型为GBR flow业务的SDF中的数据重排序。若PCF根据业务相关信息中的业务类型确定SDF是否需被重排序，由于视频和电话对会话连续性要求比较高，因此，PCF可以确定视频业务和电话业务的SDF中的数据重排序。Exemplarily, if the PCF determines whether the SDF needs to be reordered according to the local policy, when the granularity of the reordering indication is GBR flow, the PCF may determine that the type of the Qos flow is data reordering in the SDF of the GBR flow service. If the PCF determines whether the SDF needs to be reordered according to the type of service in the service related information, since the video and the telephone have higher requirements on the continuity of the session, the PCF can determine the data reordering in the SDF of the video service and the telephone service.

具体的，SDF可以有多个，PCF根据终端的签约数据、业务相关信息和本地策略，可以针对每个SDF确定在终端进行基站切换的过程中SDF是否需被重排序。Specifically, there may be multiple SDFs, and the PCF may determine, for each SDF, whether the SDF needs to be reordered in the process of performing base station handover by the terminal according to the subscription data of the terminal, the service related information, and the local policy.

805、PCF向SMF发送重排序指示信息和SDF过滤器。相应的，SMF从PCF接收重排序指示信息和SDF过滤器。在SMF接收到重排序指示信息和SDF过滤器之后，默认SDF过滤器和重排序指示信息存在对应关系。805. The PCF sends reordering indication information and an SDF filter to the SMF. Accordingly, the SMF receives the reordering indication information and the SDF filter from the PCF. After the SMF receives the reordering indication information and the SDF filter, the default SDF filter and the reordering indication information have a corresponding relationship.

示例性的，PCF向SMF发送的重排序指示信息可以包含在PCC规则中。Exemplarily, the reordering indication information sent by the PCF to the SMF may be included in the PCC rule.

需要说明的是，SDF过滤器和重排序指示信息可以通过SMF、PCF或AF中的任意一个提供或生成。该实施例中以SDF过滤器和重排序指示信息通过PCF生成为例对上述实施例提供的方法做示例性说明。It should be noted that the SDF filter and reordering indication information may be provided or generated by any one of SMF, PCF or AF. In this embodiment, the method provided by the foregoing embodiment is exemplified by taking the SDF filter and the reordering indication information by PCF as an example.

806、SMF通过N11消息把SM消息传输给AMF。其中，N11消息中封装了SM消息。806. The SMF transmits the SM message to the AMF by using an N11 message. The SM message is encapsulated in the N11 message.

807、AMF通过N2消息把SM消息传输给RAN。807. The AMF transmits the SM message to the RAN by using an N2 message.

其中，N2消息封装了SM消息，SM消息用于建立会话上下文，把网络中的会话上下文同步到终端上。The N2 message encapsulates the SM message, and the SM message is used to establish a session context and synchronize the session context in the network to the terminal.

808、RAN根据SM消息向终端发送RRC信令。相应的，终端从RAN接收RRC信令。808. The RAN sends RRC signaling to the terminal according to the SM message. Correspondingly, the terminal receives RRC signaling from the RAN.

其中，RRC信令中包括SM消息。The RRC signaling includes an SM message.

809、终端根据RRC信令中的SM消息配置会话上下文，并根据RRC信令建立会话传输资源。809. The terminal configures a session context according to the SM message in the RRC signaling, and establishes a session transmission resource according to the RRC signaling.

810、终端向RAN发送SM响应消息。相应的，RAN从终端接收SM响应消息。810. The terminal sends an SM response message to the RAN. Correspondingly, the RAN receives the SM response message from the terminal.

811、RAN通过N2消息将SM响应消息向AMF发送。相应的，AMF根据N2消息获取SM响应消息。811. The RAN sends the SM response message to the AMF by using an N2 message. Correspondingly, the AMF obtains the SM response message according to the N2 message.

其中，N2消息中封装SM响应消息。The SM response message is encapsulated in the N2 message.

812、AMF通过N11消息把SM响应消息传输给SMF。相应的，SMF从N11消息中获取SM响应消息，并根据SM响应消息确定终端中的会话上下文配置完成。812. The AMF transmits the SM response message to the SMF through the N11 message. Correspondingly, the SMF obtains the SM response message from the N11 message, and determines that the session context configuration in the terminal is completed according to the SM response message.

其中，N11消息中封装了SM响应消息。The SM response message is encapsulated in the N11 message.

813、SMF向UPF传输N4消息，其中包括SDF过滤器和重排序指示信息。相应的，UPF获取SDF的过滤器和重排序指示信息。在UPF接收到N4消息之后，UPF默认N4消息中包括的SDF过滤器和重排序指示信息存在对应关系。813. The SMF transmits an N4 message to the UPF, where the SDF filter and the reordering indication information are included. Correspondingly, the UPF obtains the SDF filter and reordering indication information. After the UPF receives the N4 message, there is a correspondence between the SDF filter and the reordering indication information included in the UPF default N4 message.

在具体实现时，可以默认对所有SDF中的数据不重排序，在确定为某个SDF重排序时，才可以包括重排序指示信息，该情况下，重排序指示信息用于指示对SDF中的数据重排序。In a specific implementation, the data in all the SDFs may be reordered by default. When it is determined that the SDF is reordered, the reordering indication information may be included. In this case, the reordering indication information is used to indicate the Data reordering.

N4消息中还可以包括SDF优先级(precedence)，QoS流标识(QoS flow identifier，简称QFI)，放射性Qos标识(reflective QoS identification，简称RQI)，传输层数据包标记(transport level packet marking)，QoS信息等。The N4 message may also include an SDF priority, a QoS flow identifier (QFI), a reflective QoS identification (RQI), a transport level packet marking, and a QoS. Information, etc.

814、UPF根据SDF过滤器和重排序指示信息为接收到的下行数据添加标签。814. The UPF adds a label to the received downlink data according to the SDF filter and the reordering indication information.

该标签可以打在N3接口的隧道报文头上；也可以打在数据的内层报文头上。The label can be placed on the tunnel header of the N3 interface; it can also be placed on the inner header of the data.

若重排序指示信息指示SDF需被重排序，标签为第一标签；若重排序指示信息指示SDF不需被重排序，标签为第二标签。If the reordering indication information indicates that the SDF needs to be reordered, the label is the first label; if the reordering indication information indicates that the SDF does not need to be reordered, the label is the second label.

815、UPF向RAN发送添加标签后的下行数据。相应的，RAN接收下行数据，该下行数据携带标签。815. The UPF sends the downlink data after the label is added to the RAN. Correspondingly, the RAN receives downlink data, and the downlink data carries a label.

816、RAN的SDAP层根据下行数据携带的标签确定是否对下行数据重排序。816. The SDAP layer of the RAN determines whether to reorder the downlink data according to the label carried in the downlink data.

若标签为第一标签，RAN根据标签确定对下行数据重排序；或者，若标签为第二标签，RAN根据标签确定不对下行数据重排序。If the label is the first label, the RAN determines to reorder the downlink data according to the label; or if the label is the second label, the RAN determines, according to the label, that the downlink data is not reordered.

若确定要对下行数据重排序，执行步骤817。If it is determined that the downlink data is to be reordered, step 817 is performed.

817、RAN的SDAP层向PDAP层发送第一指示信息，指示RAN的PDCP层执行重排序功能。817. The SDAP layer of the RAN sends the first indication information to the PDAP layer, indicating that the PDCP layer of the RAN performs a reordering function.

上述图8所示的方法还可以在其他信令流程中完成，本申请实施例对此不作具体限定。The method shown in FIG. 8 can also be completed in other signaling processes, which is not specifically limited in this embodiment of the present application.

上述主要从方法角度对本申请实施例提供的方案进行了介绍。可以理解的是，网络装置为了实现上述功能，其包含了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，本申请能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。The foregoing provides a description of the solution provided by the embodiment of the present application from a method perspective. It can be understood that, in order to implement the above functions, the network device includes corresponding hardware structures and/or software modules for performing various functions. Those skilled in the art will readily appreciate that the present application can be implemented in a combination of hardware or hardware and computer software in combination with the elements and algorithm steps of the various examples described in the embodiments disclosed herein. Whether a function is implemented in hardware or computer software to drive hardware depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present application.

本申请实施例可以根据上述方法示例对网络装置进行功能模块的划分，例如，可以对应各个功能划分各个功能模块，也可以将两个或两个以上的功能集成在一个处理模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。需要说明的是，本申请实施例中对模块的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。The embodiment of the present application may divide the function module into the network device according to the foregoing method example. For example, each function module may be divided according to each function, or two or more functions may be integrated into one processing module. The above integrated modules can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of the module in the embodiment of the present application is schematic, and is only a logical function division, and the actual implementation may have another division manner.

比如，在采用集成的功能模块的情况下，图9示出了上述实施例中所涉及的网络装置的一种可能的结构示意图，该网络装置可以为上述第一网络装置或接入网装置，参见图9，图9可以包括：处理单元901和通信单元902，还可以包括存储单元903。For example, in the case of an integrated functional module, FIG. 9 shows a possible structural diagram of the network device involved in the foregoing embodiment, and the network device may be the first network device or the access network device. Referring to FIG. 9, FIG. 9 may include a processing unit 901 and a communication unit 902, and may further include a storage unit 903.

当该网络装置为第一网络装置时，处理单元901用于对第一网络装置的动作进行控制管理，例如，处理单元901用于支持第一网络装置执行图7中的步骤701-704，图8中的步骤813-815，和/或本申请实施例中所描述的其他过程中的第一网络装置执行的动作。通信单元902用于支持第一网络装置与其他网络装置通信，例如，与图7中的接入网装置进行通信。存储单元903用于存储第一网络装置的程序代码和数据。When the network device is the first network device, the processing unit 901 is configured to perform control management on the action of the first network device. For example, the processing unit 901 is configured to support the first network device to perform steps 701-704 in FIG. Steps 813-815 in 8 and/or actions performed by the first network device in other processes described in the embodiments of the present application. The communication unit 902 is configured to support the first network device to communicate with other network devices, for example, with the access network device of FIG. The storage unit 903 is configured to store program codes and data of the first network device.

当该网络装置为接入网装置时，处理单元901用于对接入网装置的动作进行控制管理，例如，处理单元901用于支持接入网装置执行图7中的步骤704-705，图8中的步骤815-817，和/或本申请实施例中所描述的其他过程中的接入网装置执行的动作。通信单元902用于支持接入网装置与其他网络装置通信，例如，与图7中的第一网络装置进行通信。存储单元903用于存储接入网装置的程序代码和数据。When the network device is an access network device, the processing unit 901 is configured to control and control the action of the access network device. For example, the processing unit 901 is configured to support the access network device to perform steps 704-705 in FIG. 7 . Steps 815-817 in 8 and/or actions performed by the access network device in other processes described in the embodiments of the present application. The communication unit 902 is configured to support the access network device to communicate with other network devices, for example, with the first network device of FIG. The storage unit 903 is configured to store program codes and data of the access network device.

其中，处理单元901可以是处理器或控制器，通信单元902可以是通信接口、收发器、收发电路等，其中，通信接口是统称，可以包括一个或多个接口。存储单元903可以是存储器。当处理单元901为处理器，通信单元902为通信接口，存储单元903为存储器时，本申请实施例所涉及的网络装置可以为图5所示的网络装置。The processing unit 901 can be a processor or a controller, and the communication unit 902 can be a communication interface, a transceiver, a transceiver circuit, etc., wherein the communication interface is a collective name and can include one or more interfaces. The storage unit 903 may be a memory. When the processing unit 901 is a processor, the communication unit 902 is a communication interface, and the storage unit 903 is a memory, the network device according to the embodiment of the present application may be the network device shown in FIG. 5.

当图5所示的网络装置为第一网络装置时，处理器501用于对第一网络装置的动作进行控制管理，例如，处理器501用于支持第一网络装置执行图7中的步骤701-704，图8中的步骤813-815，和/或本申请实施例中所描述的其他过程中的第一网络装置执行的动作。通信接口504用于支持第一网络装置与其他网络装置通信，例如，与图7中的接入网装置进行通信。存储器503用于存储第一网络装置的程序代码和数据。When the network device shown in FIG. 5 is the first network device, the processor 501 is configured to perform control management on the action of the first network device. For example, the processor 501 is configured to support the first network device to perform step 701 in FIG. 7. - 704, steps 813-815 in FIG. 8, and/or actions performed by the first network device in other processes described in the embodiments of the present application. Communication interface 504 is for supporting communication of the first network device with other network devices, for example, with the access network device of FIG. The memory 503 is used to store program codes and data of the first network device.

当图5所示的网络装置为接入网装置时，处理器501用于对接入网装置的动作进行控制管理，例如，处理器501用于支持接入网装置执行图7中的步骤704-705，图8中的步骤815-817，和/或本申请实施例中所描述的其他过程中的接入网装置执行的动作。通信接口504用于支持接入网装置与其他网络装置通信，例如，与图7中的第一网络装置进行通信。存储器503用于存储接入网装置的程序代码和数据。When the network device shown in FIG. 5 is an access network device, the processor 501 is configured to control and manage the action of the access network device. For example, the processor 501 is configured to support the access network device to perform step 704 in FIG. 7. - 705, steps 815-817 in FIG. 8, and/or actions performed by the access network device in other processes described in the embodiments of the present application. Communication interface 504 is for supporting access network devices to communicate with other network devices, for example, with the first network device of FIG. The memory 503 is used to store program codes and data of the access network device.

本申请实施例还提供了一种计算机可读存储介质，包括指令，当其在计算机上运行时，使得计算机执行上述方法。The embodiment of the present application also provides a computer readable storage medium, including instructions, when executed on a computer, causing a computer to execute the above method.

本申请实施例还提供了一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机执行上述方法。The embodiment of the present application also provides a computer program product comprising instructions that, when run on a computer, cause the computer to perform the above method.

在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件程序实现时，可以全部或部分地以计算机程序产品的形式来实现。该计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行计算机程序指令时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或者数据中心通过有线(例如同轴电缆、光纤、数字用户线(digital subscriber line，简称DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可以用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如，软盘、硬盘、磁带)，光介质(例如，DVD)、或者半导体介质(例如固态硬盘(solid state disk，简称SSD))等。In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using a software program, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present application are generated in whole or in part. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transmission to another website site, computer, server or data center via wired (eg coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg infrared, wireless, microwave, etc.). The computer readable storage medium can be any available media that can be accessed by a computer or a data storage device that includes one or more servers, data centers, etc. that can be integrated with the media. The usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (such as a solid state disk (SSD)) or the like.

尽管在此结合各实施例对本申请进行了描述，然而，在实施所要求保护的本申请过程中，本领域技术人员通过查看所述附图、公开内容、以及所附权利要求书，可理解并实现所述公开实施例的其他变化。在权利要求中，“包括”(comprising)一词不排除其他组成部分或步骤，“一”或“一个”不排除多个的情况。单个处理器或其他单元可以实现权利要求中列举的若干项功能。相互不同的从属权利要求中记载了某些措施，但这并不表示这些措施不能组合起来产生良好的效果。Although the present application has been described herein in connection with the various embodiments, those skilled in the art can Other variations of the disclosed embodiments are achieved. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "an" does not exclude a plurality. A single processor or other unit may fulfill several of the functions recited in the claims. Certain measures are recited in mutually different dependent claims, but this does not mean that the measures are not combined to produce a good effect.

尽管结合具体特征及其实施例对本申请进行了描述，显而易见的，在不脱离本申请的精神和范围的情况下，可对其进行各种修改和组合。相应地，本说明书和附图仅仅是所附权利要求所界定的本申请的示例性说明，且视为已覆盖本申请范围内的任意和所有修改、变化、组合或等同物。显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的精神和范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。While the present invention has been described in connection with the specific embodiments and embodiments thereof, various modifications and combinations can be made without departing from the spirit and scope of the application. Accordingly, the description and drawings are to be regarded as It will be apparent to those skilled in the art that various modifications and changes can be made in the present application without departing from the spirit and scope of the application. Thus, it is intended that the present invention cover the modifications and variations of the present invention.

Claims

一种通信方法，其特征在于，包括：A communication method, comprising:

第一网络装置接收下行数据；The first network device receives downlink data;

所述第一网络装置确定与所述下行数据匹配的业务数据流SDF过滤器；The first network device determines a service data flow SDF filter that matches the downlink data;

所述第一网络装置根据所述SDF过滤器对应的重排序指示信息为所述下行数据添加标签，其中，所述重排序指示信息用于指示所述SDF是否需被重排序；若所述重排序指示信息指示所述SDF需被重排序，所述标签为第一标签；若所述重排序指示信息指示所述SDF不需被重排序，所述标签为第二标签；The first network device adds a label to the downlink data according to the reordering indication information corresponding to the SDF filter, where the reordering indication information is used to indicate whether the SDF needs to be reordered; The sorting indication information indicates that the SDF needs to be reordered, and the label is a first label; if the reordering indication information indicates that the SDF does not need to be reordered, the label is a second label;

所述第一网络装置向接入网装置发送添加所述标签后的所述下行数据，所述第一标签用于指示所述接入网装置对所述下行数据重排序，所述第二标签用于指示所述接入网装置不对所述下行数据重排序。Transmitting, by the first network device, the downlink data after adding the label to the access network device, where the first label is used to instruct the access network device to reorder the downlink data, the second label And is used to indicate that the access network device does not reorder the downlink data.
根据权利要求1所述的方法，其特征在于，所述方法还包括：The method of claim 1 further comprising:

所述第一网络装置根据所述SDF过滤器确定所述SDF过滤器对应的重排序指示信息。The first network device determines, according to the SDF filter, reordering indication information corresponding to the SDF filter.
根据权利要求1或2所述的方法，其特征在于，所述接入网装置为源接入网装置，若所述重排序指示信息用于指示所述SDF需被重排序，所述方法还包括：The method according to claim 1 or 2, wherein the access network device is a source access network device, and if the reordering indication information is used to indicate that the SDF needs to be reordered, the method further include:

所述第一网络装置向所述接入网装置发送结束标记信息，所述结束标记信息用于辅助目标接入网装置重排序；The first network device sends end tag information to the access network device, where the end tag information is used to assist the target access network device to reorder;

其中，所述源接入网装置为接收所述下行数据的终端在进行基站切换过程中的源基站，所述目标接入网装置为接收所述下行数据的终端在进行基站切换过程中的目标基站。The source access network device is a source base station in a process of performing base station handover by a terminal that receives the downlink data, and the target access network device is a target in a process of performing base station handover by a terminal that receives the downlink data. Base station.
一种通信方法，其特征在于，包括：A communication method, comprising:

接入网装置接收下行数据，所述下行数据携带标签，所述标签根据与所述下行数据匹配的SDF过滤器对应的重排序指示信息确定，所述重排序指示信息用于指示所述SDF是否需被重排序；若所述重排序指示信息指示所述SDF需被重排序，所述标签为第一标签；若所述重排序指示信息指示所述SDF不需被重排序，所述标签为第二标签；The access network device receives the downlink data, where the downlink data carries a label, and the label is determined according to the reordering indication information corresponding to the SDF filter that matches the downlink data, where the reordering indication information is used to indicate whether the SDF is The reordering indication information indicates that the SDF needs to be reordered, the label is a first label; if the reordering indication information indicates that the SDF does not need to be reordered, the label is Second label;

所述接入网装置根据所述标签确定是否对所述下行数据重排序。The access network device determines whether to reorder the downlink data according to the label.
根据权利要求4所述的方法，其特征在于，所述接入网装置根据所述标签确定是否对所述下行数据重排序，包括：The method according to claim 4, wherein the determining, by the access network device, whether to reorder the downlink data according to the label comprises:

若所述标签为第一标签，所述接入网装置根据所述标签确定对所述下行数据重排序；或者，If the label is the first label, the access network device determines to reorder the downlink data according to the label; or

若所述标签为第二标签，所述接入网装置根据所述标签确定不对所述下行数据重排序。And if the tag is a second tag, the access network device determines, according to the tag, that the downlink data is not reordered.
根据权利要求4或5所述的方法，其特征在于，所述接入网装置接收下行数据，包括:The method according to claim 4 or 5, wherein the access network device receives downlink data, including:

所述接入网装置的业务数据聚合协议SDAP层接收所述下行数据。The service data aggregation protocol SDAP layer of the access network device receives the downlink data.
根据权利要求6所述的方法，其特征在于，所述接入网装置根据所述标签确定是否对所述下行数据重排序，包括：The method according to claim 6, wherein the determining, by the access network device, whether to reorder the downlink data according to the label comprises:

所述接入网装置的SDAP层根据所述标签确定是否对所述下行数据重排序。The SDAP layer of the access network device determines whether to reorder the downlink data according to the label.
根据权利要求7所述的方法，其特征在于，若所述接入网装置的SDAP层根据所述标签确定对所述下行数据重排序，所述方法还包括：The method according to claim 7, wherein if the SDAP layer of the access network device determines to reorder the downlink data according to the label, the method further includes:

所述接入网装置的SDAP层向所述接入网装置的数据分组汇聚协议PDCP层发送第一指示信息，所述第一指示信息用于指示所述PDCP层对所述下行数据重排序。The SDAP layer of the access network device sends first indication information to the data packet convergence protocol PDCP layer of the access network device, where the first indication information is used to instruct the PDCP layer to reorder the downlink data.
根据权利要求4-8任一项所述的方法，其特征在于，所述方法还包括：The method of any of claims 4-8, wherein the method further comprises:

所述接入网装置为源接入网装置，所述接入网装置的SDAP层接收结束标记信息，所述接入网装置在转发路径上向目标接入网装置发送所述结束标记信息，所述结束标记信息用于辅助所述目标接入网装置重排序；或者，The access network device is a source access network device, and the SDAP layer of the access network device receives the end tag information, and the access network device sends the end tag information to the target access network device on the forwarding path, The end tag information is used to assist the target access network device to reorder; or

所述接入网装置为所述目标接入网装置，所述接入网装置的SDAP层从所述源接入网装置接收结束标记信息，并根据所述结束标记信息向所述接入网装置的PDCP层发送第二指示信息，所述第二指示信息用于向所述接入网装置的PDCP层指示所述转发路径上的数据发送完毕；The access network device is the target access network device, and the SDAP layer of the access network device receives the end tag information from the source access network device, and sends the end tag information to the access network according to the end tag information. The PDCP layer of the device sends the second indication information, where the second indication information is used to indicate to the PDCP layer of the access network device that the data transmission on the forwarding path is completed;

其中，所述源接入网装置为接收所述下行数据的终端在进行基站切换过程中的源基站，所述目标接入网装置为接收所述下行数据的终端在进行基站切换过程中的目标基站，所述转发路径为所述源基站和所述目标基站之间的路径。The source access network device is a source base station in a process of performing base station handover by a terminal that receives the downlink data, and the target access network device is a target in a process of performing base station handover by a terminal that receives the downlink data. The base station, the forwarding path is a path between the source base station and the target base station.
一种通信装置，其特征在于，执行权利要求1-3中任意一项所述的方法。A communication device characterized by performing the method of any one of claims 1-3.
一种通信装置，其特征在于，执行权利要求4-9中任意一项所述的方法。A communication device characterized by performing the method of any one of claims 4-9.