WO2013155846A1

WO2013155846A1 - Data streaming configuration method, base station system, and user terminal

Info

Publication number: WO2013155846A1
Application number: PCT/CN2012/085977
Authority: WO
Inventors: 黄曲芳; 曾清海
Original assignee: 华为技术有限公司
Priority date: 2012-04-20
Filing date: 2012-12-05
Publication date: 2013-10-24
Also published as: WO2013155709A1

Abstract

Embodiments of the present invention relate to the field of communications and are capable of implementing dynamic streaming. Disclosed are a data streaming configuration method, a base station system, and a user equipment (UE). The data streaming configuration method of the embodiments of the present invention comprises: a main base station transmitting a first message to an auxiliary base station, thus allowing the auxiliary base station to determine an RB-to-be-streamed and to set a configuration parameter for the RB-to-be-streamed; receiving a second message from the auxiliary base station, where the second message comprises the configuration parameter of the RB-to-be-streamed; transmitting a third message to the UE, thus allowing the UE to establish for the RB-to-be-streamed a second Packet Data Convergence Protocol (PDCP) entity and a second Radio Link Control (RLC) entity and to perform data streaming configuration.

Description

数据分流配置方法、基站***和用户终端技术领域 Data offload configuration method, base station system and user terminal

本发明涉及通信领域，尤其涉及一种数据分流配置方法、基站系统和用户终端。 The present invention relates to the field of communications, and in particular, to a data offload configuration method, a base station system, and a user terminal.

背景技术 Background technique

随着移动通信***的发展，通信***能够提供的传输速率和服务质量越来越高，用户也对传输速率提出了更高的要求。为了在不大幅增加配置带宽的情况下，保证多数用户的速率，同时为一部分用户提供更高的吞吐量，第三代合作伙伴计划 ( The 3rd Generation Partnership Project , 简称 3GPP )引入了载波聚合（ Carrier Aggregation, 简称 CA ) 技术。载波聚合是指用户设备（ User Equipment, 简称 UE ) 可以同时使用多个成员载波（ Component Carrier, 简称 CC ) 进行上下行通信，从而支持高速数据传输。当用户速率降低时，可以释放一些成员载波，只保留一个驻留载波，释放出来的传输资源可以供其它用户使用，从而达到灵活、动态的目的。 With the development of mobile communication systems, communication systems are able to provide higher transmission rates and quality of service, and users have placed higher demands on transmission rates. In order to ensure the rate of most users without significantly increasing the configuration bandwidth and provide higher throughput for some users, the 3rd Generation Partnership Project (3GPP) introduced carrier aggregation (Carrier). Aggregation, referred to as CA) technology. Carrier aggregation means that User Equipment (UE) can use multiple Component Carriers (CCs) for uplink and downlink communication to support high-speed data transmission. When the user rate is reduced, some component carriers can be released, and only one resident carrier is reserved, and the released transmission resources can be used by other users, thereby achieving flexible and dynamic purposes.

按照聚合的载波所在的基站位置，长期演进（ Long Term Evolution, 简称 LTE ) ***的载波聚合大致可以分为基站内部小区聚合、基站间小区聚合等。在基站间小区聚合的场景下，数据可以经由多个小区传输。按照数据分流的机制，数据分流可以分为两类：一类是基于无线承载 ( Radio Bearer , 简称 RB ) 的数据分流，一类是基于数据包的数据分流。 According to the location of the base station where the aggregated carrier is located, the carrier aggregation of the Long Term Evolution (LTE) system can be roughly divided into intra-base station cell aggregation, inter-base station cell aggregation, and the like. In the scenario of cell aggregation between base stations, data can be transmitted via multiple cells. According to the data offloading mechanism, data offloading can be divided into two categories: one is based on radio bearer (RB) data splitting, and the other is packet based data shunting.

基于 RB的数据分流，是指按业务分流，当 UE同时有多个业务时，将某些业务的数据通过一个基站传输，另一些业务的数据通过另一个基站传输，这种数据分流方式一旦配置好，数据经由哪一个基站传输，唯一的依据是该数据包所属的 RB , 不能根据空口情况动态调整，所以动态性不很好。 RB-based data offloading refers to traffic splitting. When the UE has multiple services at the same time, data of some services is transmitted through one base station, and data of other services is transmitted through another base station. Well, the base station through which the data is transmitted, the only basis is the RB to which the data packet belongs, which cannot be dynamically adjusted according to the air interface condition, so The state is not very good.

基于数据包的数据分流，则是根据实时的空口情况决定数据经由哪一个基站传输的，这样，通信双方可以根据空口的质量和拥挤程度挑选一个合适的基站进行传输。在这种数据分流中，下行的每个数据包通过哪一个基站传输，由服务网关（ Service Gateway, 简称 SGW ) 决定，上行的数据包通过哪一个基站传输，由两个基站协商决定，再通过调度命令通知 UE。上行数据经不同的基站传输，最终都汇聚到 SGW。由于数据分流由 SGW决定，如果空口条件发生变化，想要改变数据分流策略时，则需要改变 SGW的协议栈的配置，故涉及到了网络侧的行为改变，数据分流的动态性差，影响用户的使用。 The packet-based data offloading determines which base station the data is transmitted according to the real-time air interface condition, so that the communication parties can select a suitable base station for transmission according to the quality of the air interface and the degree of congestion. In this data offload, which base station is transmitted by each downlink packet, which is determined by the Service Gateway (SGW), and which base station is transmitted by the uplink data packet, which is negotiated and decided by the two base stations. The scheduling command notifies the UE. The uplink data is transmitted by different base stations and eventually aggregated to the SGW. Since the data offload is determined by the SGW, if the air interface condition changes and the data offload policy is changed, the configuration of the SGW protocol stack needs to be changed. Therefore, the behavior of the network side is changed, and the dynamics of the data offload is poor, which affects the user's use. .

发明内容 Summary of the invention

本申请的多个方面提供一种数据分流配置方法、基站***和用户终端，实现动态分流。本申请的一方面，提供一种数据分流配置方法，包括： Aspects of the present application provide a data offload configuration method, a base station system, and a user terminal to implement dynamic offloading. An aspect of the present application provides a data offload configuration method, including:

主基站发送第一消息至辅基站，所述第一消息用于向所述辅基站请求进行数据分流，所述第一消息中包括无线承载 RB的标识和所述 RB 的业务质量要求 Qos参数，以使所述辅基站确定待分流 RB并为所述待分流 RB设置配置参数； The primary base station sends a first message to the secondary base station, where the first message is used to request data splitting from the secondary base station, where the first message includes an identifier of the radio bearer RB and a Qos parameter of the service quality requirement of the RB. So that the secondary base station determines the to-be-split RB and sets configuration parameters for the to-be-split RB;

所述主基站接收来自辅基站的第二消息，所述第二消息中包括所述待分流 RB的配置参数； The primary base station receives a second message from the secondary base station, where the second message includes configuration parameters of the to-be-split RB;

所述主基站发送第三消息至用户终端 UE, 所述第三消息中包括所述待分流 RB的标识和所述待分流 RB的配置参数，以使所述 UE为所述待分流 RB建立第二 PDCP 实体和第二 RLC 实体并进行数据分流配置； The primary base station sends a third message to the user terminal UE, where the third message includes the identifier of the to-be-offered RB and the configuration parameter of the to-be-offered RB, so that the UE establishes the Two PDCP entities and a second RLC entity are configured for data offloading;

其中，所述 UE具有第一 PDCP实体，第一 RLC实体和 MAC实体，所述第二 PDCP实体和第二 RLC实***于所述第一 RLC实体与所述 MAC实体之间。 The UE has a first PDCP entity, a first RLC entity, and a MAC real The second PDCP entity and the second RLC entity are located between the first RLC entity and the MAC entity.

本申请的另一方面，提供一种下行数据传输方法，以进行数据分流，包括： Another aspect of the present application provides a downlink data transmission method for data offloading, including:

主基站的 PDCP实体接收来自服务网关 SGW的数据，并对所述数据进行处理，形成第一数据，其中，所述数据分流的类型为部分分流，所述部分分流是指一个 RB的数据部分经由辅基站传输，部分经由主基站传输； The PDCP entity of the primary base station receives the data from the serving gateway SGW, and processes the data to form the first data, where the type of the data offload is partial offload, and the partial offload refers to the data part of one RB via The secondary base station transmits, and is partially transmitted via the primary base station;

所述主基站的 RLC实体给所述第一数据添加第一 RLC序号，形成第二数据，并将所述第二数据中待分流数据发送至辅基站的 PDCP实体；所述辅基站的 PDCP 实体将所述待分流数据发送至所述辅基站的 RLC实体； The RLC entity of the primary base station adds a first RLC sequence number to the first data, forms second data, and sends the data to be offloaded in the second data to the PDCP entity of the secondary base station; the PDCP entity of the secondary base station Transmitting the to-be-split data to an RLC entity of the secondary base station;

所述辅基站处理所述待分流数据，并将所述处理后的待分流数据发送至 UE。 The secondary base station processes the to-be-divided data, and sends the processed to-be-split data to the UE.

本申请的再一方面，提供一种下行数据传输方法，以进行数据分流，包括： In still another aspect of the present application, a downlink data transmission method is provided to perform data offloading, including:

主基站的 PDCP实体接收来自服务网关 SGW的数据，并对所述数据进行处理，形成第一数据，其中，所述数据分流的类型为完全分流，所述完全分流是指一个 RB的数据全部经由辅基站传输； The PDCP entity of the primary base station receives the data from the serving gateway SGW, and processes the data to form the first data, where the type of the data offload is a complete offload, and the complete offload refers to the data of one RB all passing through Secondary base station transmission;

所述主基站的 RLC实体接收所述第一数据，并将所述第一数据发送至辅基站的 PDCP实体； The RLC entity of the primary base station receives the first data, and sends the first data to a PDCP entity of the secondary base station;

所述辅基站的 PDCP 实体接收来自主基站的所述第一数据，并将所述第一数据发送至所述辅基站的 RLC实体； The PDCP entity of the secondary base station receives the first data from the primary base station, and sends the first data to an RLC entity of the secondary base station;

所述辅基站处理所述第一数据，并将处理后的所述第一数据发送至 UE。 The secondary base station processes the first data, and sends the processed first data to the UE.

本申请的再一方面，提供一种上行数据传输方法，包括： UE向主基站和 /或辅基站上报 BSR, 以使所述主基站和 /或辅基站为所述 U E分配上行传输资源； In another aspect of the present application, an uplink data transmission method is provided, including: The UE reports the BSR to the primary base station and/or the secondary base station, so that the primary base station and/or the secondary base station allocates uplink transmission resources to the UE;

所述 UE的第一 PDCP实体对接收的数据进行处理，形成第一数据；所述 UE的第一 RLC实体将所述第一数据进行分段级联，添加第一 RLC 序号，形成第二数据，并根据接收到的所述辅基站分配的上行传输资源将所述第二数据中待分流数据发送至第二 P D C P实体； The first PDCP entity of the UE processes the received data to form the first data; the first RLC entity of the UE segments the first data into segments, adds the first RLC sequence number, and forms the second data. And sending, to the second PDCP entity, the data to be offloaded in the second data according to the received uplink transmission resource allocated by the secondary base station;

所述 UE的第二 PDCP实体将所述分流数据发送至 UE的第二 RLC 实体； Transmitting, by the second PDCP entity of the UE, the offloaded data to a second RLC entity of the UE;

所述 UE 的第二 RLC 实体将接收到的所述待分流数据添加第二 The second RLC entity of the UE adds the received data to be offloaded to the second

RLC序号，形成第三数据； RLC serial number, forming third data;

所述 UE将处理后的第三数据发送至所述辅基站。 The UE sends the processed third data to the secondary base station.

本申请的再一方面，提供一种上行数据传输方法，包括： In another aspect of the present application, an uplink data transmission method is provided, including:

UE向主基站和 /或辅基站上报 BSR, 以使所述主基站和 /或辅基站为所述 U E分配上行传输资源； The UE reports the BSR to the primary base station and/or the secondary base station, so that the primary base station and/or the secondary base station allocates uplink transmission resources for the U E;

所述 UE的第一 PDCP实体对接收的数据进行处理，形成第一数据；所述 UE的第一 RLC实体给所述第一数据添加第一 RLC序号，形成第二数据，并将所述第二数据中待分流数据发送至 UE的第二 PDCP 实体； The first PDCP entity of the UE processes the received data to form first data; the first RLC entity of the UE adds a first RLC sequence number to the first data, forms a second data, and the foregoing The second PDCP entity to be offloaded to the UE in the second data;

所述 UE 的第二 PDCP 实体将所述待分流数据发送至 UE的第二 RLC实体； Sending, by the second PDCP entity of the UE, the to-be-split data to a second RLC entity of the UE;

所述 UE的第二 RLC实体根据接收到的所述辅基站分配的上行传输资源将接收到的所述分流数据分段级联后，添加第二 RLC 序号，形成第三数据； And the second RLC entity of the UE adds the second RLC sequence number to form the third data according to the received uplink transmission resource allocated by the secondary base station, and then the second RLC sequence number is added;

所述 UE将处理后的所述第三数据发送至所述辅基站。 The UE sends the processed third data to the secondary base station.

本申请的再一方面，提供一种基站，包括： In still another aspect of the present application, a base station is provided, including:

发送机，用于：发送第一消息至辅基站，所述第一消息用于向所述辅基站请求进行数据分流，所述第一消息中包括无线承载 RB的标识和所述 RB的业务质量要求 Qos参数，以使所述辅基站确定待分流 RB并为所述待分流 RB设置配置参数；和 Transmitter for: Sending a first message to the secondary base station, where the first message is used to request data splitting from the secondary base station, where the first message includes an identifier of the radio bearer RB and a service quality requirement Qos parameter of the RB, so that Determining, by the secondary base station, a RB to be offloaded and setting configuration parameters for the to-be-split RB; and

发送第三消息至用户终端 UE , 所述第三消息中包括所述待分流 RB 的标识和所述待分流 RB 的配置参数，以使所述 UE为所述待分流 RB建立第二 PDCP实体和第二 RLC实体并进行数据分流配置； Sending a third message to the user terminal UE, where the third message includes the identifier of the to-be-offered RB and the configuration parameter of the to-be-offered RB, so that the UE establishes a second PDCP entity for the to-be-split RB and a second RLC entity and performing data offload configuration;

接收机，用于接收来自所述辅基站的第二消息，所述第二消息中包括所述待分流 RB的配置参数； a receiver, configured to receive a second message from the secondary base station, where the second message includes configuration parameters of the to-be-split RB;

其中，所述 UE具有第一 PDCP实体，第一 RLC实体和 MAC实体，所述第二 PDCP实体和第二 RLC实***于所述第一 RLC实体与所述 MAC实体之间。 The UE has a first PDCP entity, a first RLC entity, and a MAC entity, and the second PDCP entity and the second RLC entity are located between the first RLC entity and the MAC entity.

本申请的再一方面，提供一种基站***，包括主基站和辅基站，所述主基站包括 PDCP实体和 RLC实体，所述辅基站包括 PDCP实体和 RLC实体， A further aspect of the present application provides a base station system, including a primary base station and a secondary base station, where the primary base station includes a PDCP entity and an RLC entity, and the secondary base station includes a PDCP entity and an RLC entity.

所述主基站的 PDCP实体用于接收来自服务网关 SGW的数据，并对所述数据进行处理，形成第一数据，其中，所述数据的传输方法为部分分流； The PDCP entity of the primary base station is configured to receive data from the serving gateway SGW, and process the data to form first data, where the data transmission method is partially offloaded;

所述主基站的 RLC实体用于给所述第一数据添加第一 RLC序号，形成第二数据，并将所述第二数据中待分流数据发送至所述辅基站的 PDCP实体； The RLC entity of the primary base station is configured to add a first RLC sequence number to the first data, form second data, and send the data to be offloaded in the second data to a PDCP entity of the secondary base station;

所述辅基站的 PDCP 实体用于将所述待分流数据发送至所述辅基站的 RLC实体； The PDCP entity of the secondary base station is configured to send the to-be-split data to an RLC entity of the secondary base station;

所述辅基站用于处理所述待分流数据，并将所述处理后的待分流数据发送至 UE。 The secondary base station is configured to process the to-be-divided data, and send the processed to-be-split data to the UE.

本申请的再一方面，提供一种基站***，包括主基站和辅基站，所述主基站包括 PDCP实体和 RLC实体，所述辅基站包括 PDCP实体和 RLC实体， In a further aspect of the present application, a base station system is provided, including a primary base station and a secondary base station, The primary base station includes a PDCP entity and an RLC entity, and the secondary base station includes a PDCP entity and an RLC entity.

所述主基站的 PDCP实体用于接收来自服务网关 SGW的数据，并对所述数据进行处理，形成第一数据，其中，所述数据的传输方法为完全分流； The PDCP entity of the primary base station is configured to receive data from the serving gateway SGW, and process the data to form first data, where the data transmission method is completely offloaded;

所述主基站的 RLC实体用于接收所述第一数据，并将所述第一数据发送至辅基站的 PDCP实体； The RLC entity of the primary base station is configured to receive the first data, and send the first data to a PDCP entity of the secondary base station;

所述辅基站的 PDCP 实体用于接收来自所述主基站的所述第一数据，并将所述第一数据发送至辅基站的 RLC实体； The PDCP entity of the secondary base station is configured to receive the first data from the primary base station, and send the first data to an RLC entity of the secondary base station;

所述辅基站处理所述第一数据，并将所述处理后的第一数据发送至 UE。 The secondary base station processes the first data, and sends the processed first data to the UE.

本申请的再一方面，提供一种用户终端，包括第一 PDCP 实体、第一 RLC实体、 MAC实体和物理层，还包括： 881 上4艮单元、第二 PDCP实体和第二 RLC实体，所述第二 PDCP实体和第二 RLC实*** 于所述 UE的第一 RLC实体与 MAC之间 , A further aspect of the present application provides a user terminal, including a first PDCP entity, a first RLC entity, a MAC entity, and a physical layer, and further includes: a 881 upper unit, a second PDCP entity, and a second RLC entity. The second PDCP entity and the second RLC entity are located between the first RLC entity of the UE and the MAC,

所述 BSR上报单元，用于向主基站和 /或辅基站上报 BSR, 以使所述主基站和 /或辅基站为所述 UE分配上行传输资源； The BSR reporting unit is configured to report a BSR to the primary base station and/or the secondary base station, so that the primary base station and/or the secondary base station allocate uplink transmission resources to the UE;

所述第一 PDCP 实体，用于对接收的数据进行处理，形成第一数据； The first PDCP entity is configured to process the received data to form a first data;

所述第一 RLC实体，用于将所述第一数据进行分段级联，添加第一 RLC 序号，形成第二数据，并根据接收到的所述辅基站分配的上行传输资源将所述第二数据中待分流数据发送至所述第二 P D C P实体；所述第二 PDCP实体，用于将所述分流数据发送至所述 UE的第二 RLC实体； The first RLC entity is configured to perform segmentation concatenation of the first data, add a first RLC sequence number, form second data, and perform the foregoing according to the received uplink transmission resource allocated by the secondary base station. The data to be offloaded in the second data is sent to the second PDCP entity; the second PDCP entity is configured to send the offloaded data to the second RLC entity of the UE;

所述第二 RLC 实体，用于将接收到的所述待分流数据添加第二 RLC序号，形成第三数据，并将所述第三数据发送至所述 UE的 MAC 实体； The second RLC entity is configured to add the second RLC sequence number to the received data to be offloaded, form third data, and send the third data to the MAC of the UE. entity;

所述 UE的物理层，用于将处理后的第三数据发送至所述辅基站。本申请的再一方面，提供一种用户终端，包括第一 PDCP 实体、第一 RLC实体、 MAC实体和物理层，还包括： BSR上报单元、第二 PDCP 实体和第二 RLC实体，所述第二 PDCP实体和第二 RLC实***于所述 UE的第一 RLC实体与 MAC之间 , The physical layer of the UE is configured to send the processed third data to the secondary base station. A further aspect of the present application provides a user terminal, including a first PDCP entity, a first RLC entity, a MAC entity, and a physical layer, and further includes: a BSR reporting unit, a second PDCP entity, and a second RLC entity, where The second PDCP entity and the second RLC entity are located between the first RLC entity of the UE and the MAC,

所述第一 RLC实体，用于给所述第一数据添加第一 RLC序号，形成第二数据，并将所述第二数据中待分流数据发送至所述 UE 的第二 PDCP实体； The first RLC entity is configured to add a first RLC sequence number to the first data, to form a second data, and send the to-be-split data in the second data to a second PDCP entity of the UE;

所述第二 PDCP实体，用于将所述待分流数据发送至所述 UE的第二 RLC实体； The second PDCP entity is configured to send the to-be-split data to a second RLC entity of the UE;

所述第二 RLC实体，用于根据接收到的所述辅基站分配的上行传输资源将接收到的所述分流数据分段级联后，添加第二 RLC 序号，形成第三数据，将所述第三数据发送至所述 UE的 MAC实体； The second RLC entity is configured to add the second RLC sequence number to form a third data according to the received uplink transmission resource allocated by the secondary base station, and then add the second RLC sequence number to form the third data. Transmitting third data to a MAC entity of the UE;

所述 UE的物理层用于将处理后的第三数据发送至所述辅基站。上面描述的数据分流配置方法数据分流配置方法、基站***和用户终端，对底层测量到的空口情况变化反应较快，动态分流的效果较好。附图说明实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。 The physical layer of the UE is configured to send the processed third data to the secondary base station. The data offloading configuration method, the base station system and the user terminal described above have a quick response to the change of the air interface measured at the bottom layer, and the dynamic shunting effect is better. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in FIG Other drawings can also be obtained from these drawings on the premise of creative labor.

图 1为本发明实施例中的数据分流配置方法的流程示意图；图 2为本发明实施例中数据分流配置方法的信令交互示意图；图 3为本发明实施例中协议栈结构示意图； 1 is a schematic flowchart of a data offloading configuration method according to an embodiment of the present invention; FIG. 2 is a schematic diagram of signaling interaction of a data offloading configuration method according to an embodiment of the present invention; FIG. 3 is a schematic structural diagram of a protocol stack according to an embodiment of the present invention;

图 4为本发明实施例中数据分流配置前后对照示意图； 4 is a schematic diagram of a front-back comparison of data offload configuration in an embodiment of the present invention;

图 5为本发明实施例中下行数据传输方法的流程示意图； FIG. 5 is a schematic flowchart of a downlink data transmission method according to an embodiment of the present invention;

图 6为本发明实施例中下行数据传输过程示意图之一； 6 is a schematic diagram of a downlink data transmission process according to an embodiment of the present invention;

图 7为本发明实施例中下行数据传输过程示意图之二； 7 is a second schematic diagram of a downlink data transmission process according to an embodiment of the present invention;

图 8为本发明实施例中下行数据传输方法的流程示意图之二；图 9为本发明实施例中上行数据传输方法的流程示意图之一；图 10为本发明实施例中上行数据传输过程示意图； FIG. 8 is a schematic flowchart of a method for transmitting a downlink data according to an embodiment of the present invention; FIG. 9 is a schematic flowchart of an uplink data transmission method according to an embodiment of the present invention; FIG. 10 is a schematic diagram of an uplink data transmission process according to an embodiment of the present invention;

图 1 1为本发明实施例中上行数据传输过程中 UE的示意图；图 12为本发明实施例中上行数据传输方法的流程示意图之二；图 13为本发明实施例中基站的结构示意图； 1 is a schematic diagram of a UE in an uplink data transmission process according to an embodiment of the present invention; FIG. 12 is a schematic flowchart of a method for transmitting an uplink data according to an embodiment of the present invention; FIG. 13 is a schematic structural diagram of a base station according to an embodiment of the present invention;

图 14为本发明实施例中基站***的结构示意图； FIG. 14 is a schematic structural diagram of a base station system according to an embodiment of the present invention;

图 15为本发明实施例中用户终端的结构示意图。 FIG. 15 is a schematic structural diagram of a user terminal according to an embodiment of the present invention.

具体实施方式 detailed description

本发明实施例提供一种数据分流配置方法、基站***和用户终端，对空口情况变化反应较快，动态分流的效果好。 The embodiment of the invention provides a data offloading configuration method, a base station system and a user terminal, which have a quick response to the change of the air interface condition, and the dynamic shunting effect is good.

以下描述中，为了说明而不是为了限定，提出了诸如特定***结构、接口、技术之类的具体细节，以便透切理解本发明。然而，本领域的技术人员情况中，省略对众所周知的装置、电路以及方法的详细说明，以免不必要的细节妨碍本发明的描述。 In the following description, for purposes of illustration and description However, in the case of those skilled in the art, detailed descriptions of well-known devices, circuits, and methods are omitted to avoid unnecessary The details impede the description of the invention.

本文中描述的各种技术可用于各种无线通信***，例如当前 2 G , The various techniques described herein can be used in a variety of wireless communication systems, such as current 2G,

3G通信***和下一代通信***，例如全球移动通信***（ Global System for Mobile communications , 简称 GSM ) , 码分多址 ( Code Division Multiple Access , 简称 CDMA ) ***，时分多址（ Time Division Multiple Access , 简称 TDMA ) ***，宽带码分多址（Wideband Code Division Multiple Access Wireless,简称 WCDMA ) ,频分多址( Frequency Division Multiple Addressing , 简称 FDMA ) ***，正交频分多址 ( Orthogonal Frequency-Division Multiple Access ,简称 OFDMA )***，单载波 FDMA3G communication system and next generation communication system, such as Global System for Mobile Communications (GSM), Code Division Multiple Access (CDMA) system, Time Division Multiple Access (Time Division Multiple Access, referred to as TDMA) system, Wideband Code Division Multiple Access Wireless (WCDMA), Frequency Division Multiple Addressing (FDMA) system, Orthogonal Frequency-Division Multiple Access (OFDM) Referred to as OFDMA system, single carrier FDMA

( SC-FDMA ) ***，通用分组无线业务（ General Packet Radio Service , 简称 GPRS ) ***，长期演进（ Long Term Evolution, 简称 LTE ) ***，以及其他此类通信***。 (SC-FDMA) system, General Packet Radio Service (GPRS) system, Long Term Evolution (LTE) system, and other such communication systems.

本文中结合终端和 /或基站和 /或基站控制器来描述各种方面。 Various aspects are described herein in connection with a terminal and/or base station and/or base station controller.

用户终端，可以是无线终端也可以是有线终端，无线终端可以是指向用户提供语音和 /或数据连通性的设备，具有无线连接功能的手持式设备、或连接到无线调制解调器的其他处理设备。无线终端可以经无线接入网（Radio Access Network, 简称 RAN )与一个或多个核心网进行通信，无线终端可以是移动终端，如移动电话（或称为"蜂窝"电话）和具有移动终端的计算机，例如，可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置，它们与无线接入网交换语言和 /或数据。例如，个人通信业务（Personal Communication Service, 简称 PCS ) 电话、无绳电话、会话发起协议（SIP ) 话机、无线本地环路 ( Wireless Local Loop, 简称 WLL )站、个人数字助理 The user terminal, which may be a wireless terminal or a wired terminal, may be a device that provides voice and/or data connectivity to the user, a handheld device with wireless connectivity, or other processing device connected to the wireless modem. The wireless terminal can communicate with one or more core networks via a Radio Access Network (RAN), which can be a mobile terminal, such as a mobile phone (or "cellular" phone) and a mobile terminal. The computer, for example, can be a portable, pocket, handheld, computer built-in or in-vehicle mobile device that exchanges language and/or data with the wireless access network. For example, Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, personal digital assistants

( Personal Digital Assistant , 简称 PDA )等设备。无线终端也可以称为***、订户单元 ( Subscriber Unit ), 订户站 ( Subscriber Station ), 移动站 ( Mobile Station )、移动台（ Mobile )、远程站（ Remote Station )、接入点（ Access Point )、远程终端（ Remote Terminal )、接入终端（ Access Terminal )、用户终端（User Terminal )、用户代理（ User Agent )、用户设备（ User Device )、或用户装备（ User Equipment )。 (Personal Digital Assistant, PDA for short) and other devices. A wireless terminal may also be called a system, a Subscriber Unit, a Subscriber Station, a Mobile Station, a Mobile, a Remote Station, an Access Point, Remote Terminal, Access Terminal, User Terminal Terminal ), User Agent, User Device, or User Equipment.

基站（例如，接入点）可以是指接入网中在空中接口上通过一个或多个扇区与无线终端通信的设备。基站可用于将收到的空中帧与 IP分组进行相互转换，作为无线终端与接入网的其余部分之间的路由器，其中接入网的其余部分可包括网际协议（IP )网络。基站还可协调对空中接口的属性管理。例如，基站可以是 GSM或 CDMA中的基站（ Base Transceiver Station, 简称 BTS ), 也可以是 WCDMA中的基站（ NodeB ),还可以是 LTE中的演进型基站（ NodeB 或 eNB或 e-NodeB , evolutional Node B ) , 本发明并不限定。 A base station (e.g., an access point) can refer to a device in an access network that communicates with a wireless terminal over one or more sectors over an air interface. The base station can be used to convert the received air frame to the IP packet as a router between the wireless terminal and the rest of the access network, wherein the remainder of the access network can include an Internet Protocol (IP) network. The base station can also coordinate attribute management of the air interface. For example, the base station may be a Base Transceiver Station (BTS) in GSM or CDMA, or may be a base station (NodeB) in WCDMA, or may be an evolved base station in LTE (NodeB or eNB or e-NodeB, evolutional Node B), the invention is not limited.

基站控制器，可以是 GSM或 CDMA中的基站控制器（ BSC, base station controller ), 也可以是 WCDMA中的无线网络控制器（RNC, Radio Network Controller ) , 本发明并不限定。 The base station controller may be a base station controller (BSC) in GSM or CDMA, or may be a radio network controller (RNC) in WCDMA, which is not limited in the present invention.

另夕卜，本文中术语"***，，和"网络"在本文中常被可互换使用。本文中术语 "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， Α和 /或 Β, 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，本文中字符 " , —般表示前后关联对象是一种 "或" 的关系。 In addition, the terms "system," and "network" are often used interchangeably herein. In this document, the term "and/or" is merely an association that describes an associated object, indicating that there may be three relationships. For example, Α and / or Β, can mean: There are three cases of A, B and A, and B. In addition, the character "," in this paper, means that the context is an "or". relationship.

本实施例中，部分分流为一个 RB的数据部分经由辅基站传输，部分经由主基站传输；完全分流为一个 RB的数据全部经由辅基站传输。 In this embodiment, the data part that is partially offloaded into one RB is transmitted via the secondary base station, and the part is transmitted via the primary base station; the data that is completely offloaded to one RB is all transmitted via the secondary base station.

本实施例提供一种数据分流配置方法，如图 1 和图 2所示，该方法包括： This embodiment provides a data offload configuration method. As shown in FIG. 1 and FIG. 2, the method includes:

101、主基站发送第一消息至辅基站，所述第一消息用于向所述辅基站请求进行数据分流，所述第一消息中包括无线承载 RB的标识和所述 RB的业务质量要求 Qos参数，以使所述辅基站确定待分流 RB并为所述待分流 RB设置配置参数。 The primary base station sends a first message to the secondary base station, where the first message is used to request data splitting from the secondary base station, where the first message includes an identifier of the radio bearer RB and a service quality requirement Qos of the RB. And a parameter, so that the secondary base station determines the to-be-split RB and sets configuration parameters for the to-be-split RB.

本实施例中，主基站（ Primary evolved NodeB , 简称 P-eNB )是指 UE的服务基站，辅基站（ Secondary evolved NodeB , 简称 S-eNB )是指参与该 UE的载波聚合，并进行数据分流的基站。本实施例的架构中， RAN侧通过主基站与 SGW连接。 In this embodiment, the primary evolved NodeB (P-eNB) refers to the serving base station of the UE, and the Secondary evolved NodeB (S-eNB) is Refers to a base station that participates in carrier aggregation of the UE and performs data offloading. In the architecture of this embodiment, the RAN side is connected to the SGW through the primary base station.

在进行数据分流之前，首先要启动数据分流配置的流程。主基站在决定开始进行数据分流后，通过 X2接口向辅基站发送第一消息，实例性的，该第一消息可以是数据分流请求消息，第一消息中包括各个 RB标识和每个 RB对应的业务质量要求（Quality of Service , 简称 Qos )参数。在本实施例中，各个 RB标识和每个 RB对应的 Qos参数可以通过包含带分流 RB的列表形式呈现，也可以通过数组形式呈现。 Qos参数可以包括以下任意一种或其任意组合： RB的优先级、是否可以被抢占、上行最大比特速率、上行保证比特速率、下行最大比特速率、下行保证比特速率，最大容许时延等。辅基站在接收到该数据分流请求消息后，根据该 RB列表为每个待分流的 RB设置配置参数，其中，配置参数可以包括以下任意一种或其任意组合：分组数据汇聚协议（Packet Data Convergence Protocol , 简称 PDCP)实体、无线链路控制（Radio Link Control, 简称 RLC)实体、媒介存取控制（Medium Access Control , 简称 MAC )实体及物理层（ Physical layer, 简称 Phy ) 的相关参数。 Before data offloading, first start the process of data offload configuration. After the primary base station decides to start data offloading, the first message is sent to the secondary base station by using the X2 interface. The first message may be a data offload request message, where the first message includes each RB identifier and each RB corresponding to each RB. Quality of Service (Qos) parameters. In this embodiment, each RB identifier and the Qos parameter corresponding to each RB may be presented in the form of a list containing the offloaded RB, or may be presented in the form of an array. The Qos parameter may include any one of the following or any combination thereof: RB priority, whether it can be preempted, uplink maximum bit rate, uplink guaranteed bit rate, downlink maximum bit rate, downlink guaranteed bit rate, maximum allowable delay, and the like. After receiving the data offloading request message, the secondary base station sets configuration parameters for each RB to be offloaded according to the RB list, where the configuration parameter may include any one of the following or any combination thereof: Packet Data Convergence Protocol, abbreviated as PDCP) entity, Radio Link Control (RLC) entity, medium access control (MAC) entity, and physical layer (Phy).

可选的，辅基站在接收到第一消息后，还要根据自身的负荷情况判断可允许哪些 RB接入，以确定需要为哪些 RB设置配置参数，在确定好待分流的 RB后，根据该 RB的根据 Qos参数为每个待分流的 RB 建立 PDCP实体和 RLC实体，并设置配置参数。比如：主基站发了一个 RB列表给辅基站，包含 A/B/C三个 RB,请求辅基站进行分流处理，辅基站经过接接控制算法后，认为自己只能承担 A/B 两个 RB , 就向主基站回响应：只能分流 A/B两个 RB。 Optionally, after receiving the first message, the secondary base station determines, according to its own load condition, which RBs are allowed to access, to determine which RBs need to be configured with configuration parameters, and after determining the RB to be offloaded, according to the The RB establishes a PDCP entity and an RLC entity for each RB to be offloaded according to the Qos parameter, and sets configuration parameters. For example, the primary base station sends an RB list to the secondary base station, which includes three A/B/C RBs, and requests the secondary base station to perform offload processing. After the secondary base station receives the control algorithm, it considers that it can only bear two A/B RBs. , the response back to the primary base station: Only two A/B RBs can be offloaded.

PDCP是 UMTS或者 LTE中的一个无线传输协议栈，它通常负责将 IP头压缩和解压、数据包加密解密、传输用户数据并维护为无损的无线网络服务子***（SRNS)设置的无线承载的序列号。如果 PDCP 配置为 "没有压缩，不做加密解密" ，则 PDCP实体将对数据包做透明处理，即不做处理。 RLC实***于 MAC实体之上，主要为用户数据提供分段级连和重传业务。 PDCP is a wireless transmission protocol stack in UMTS or LTE. It is usually responsible for compressing and decompressing IP headers, encrypting and decrypting data packets, transmitting user data and maintaining them as lossless. The serial number of the radio bearer set by the Wireless Network Service Subsystem (SRNS). If the PDCP is configured as "no compression, no encryption and decryption", the PDCP entity will transparently process the data packet, ie no processing. The RLC entity is located above the MAC entity and provides segmentation and retransmission services for user data.

此外，第一消息中还可以包括：分流类型标识，用于指示该数据分流传输为完全分流或者部分分流。辅基站在为每个 RB设置配置参数时，通过该配置参数可得知某一个 RB上的数据是完全分流还是部分分流。 In addition, the first message may further include: a traffic distribution type identifier, configured to indicate that the data offload transmission is a full offload or a partial offload. When the secondary base station sets the configuration parameters for each RB, the configuration parameter can be used to know whether the data on one RB is completely offloaded or partially offloaded.

102、所述主基站接收来自辅基站的第二消息，所述第二消息中包括所述待分流 RB的配置参数。 102. The primary base station receives a second message from the secondary base station, where the second message includes configuration parameters of the to-be-split RB.

辅基站在完成为待分流的每个 RB设置配置参数后，向主基站发送第二消息，实例性的，该第二消息可以是数据分流响应消息，其中，数据分流响应消息中包括待分流的每个 RB的配置参数。主基站接收该数据分流响应消息。 After the secondary base station sets the configuration parameters for each RB to be offloaded, the secondary base station sends a second message to the primary base station. The second message may be a data offload response message, where the data offload response message includes the to be offloaded. Configuration parameters for each RB. The primary base station receives the data offload response message.

上述流程中，辅基站设置的配置参数详细说明如下： In the above process, the configuration parameters set by the secondary base station are described in detail as follows:

PDCP实体的参数可以包括：辅基站使用的 discardTimer长度。 RLC实体的参数可以包括以下任意一种或其任意组合： The parameters of the PDCP entity may include: a discardTimer length used by the secondary base station. The parameters of the RLC entity may include any one of the following or any combination thereof:

- RB的 RLC模式： AM或 UM; - RLC mode of RB: AM or UM;

- RB使用的 RLC SN长度； - RLC SN length used by the RB;

- RB接收方使用的 RLC重排序定时器长度； - RLC reordering timer length used by the RB receiver;

- RB接收方使用的 RLC状态报告禁止定时器长度； - RB发送方使用的 RLC最大重传次数； - The RLC status report used by the RB receiver disables the timer length; - the maximum number of RLC retransmissions used by the RB sender;

- RB发送方使用的 Poll触发的数据包数量； - the number of packets triggered by the Poll used by the RB sender;

- RB发送方使用的 Poll触发的数据字节数量； - RB发送方使用的 Poll重传定时器长度。 - the number of data bytes triggered by the Poll used by the RB sender; - The length of the Poll retransmission timer used by the RB sender.

MAC实体的参数可以包括以下任意一种或其任意组合： The parameters of the MAC entity may include any one of the following or any combination thereof:

- 参与分流的各个逻辑信道优先级； - the priority of each logical channel participating in the offload;

- 参与分流的各个逻辑信道所在的逻辑信道组； - a logical channel group in which each logical channel participating in the offload is located;

- 各个 RB在辅基站的最大 HARQ重传次数； - the maximum number of HARQ retransmissions of each RB at the secondary base station;

- UE 向辅基站发送周期性緩冲状态报告（ Buffer Status Report, 简称 BSR ) 的周期长度； - the UE sends a periodic buffer status report (BSR) period length to the secondary base station;

- UE向辅基站发送 BSR的重传定时器的长度； - the length of the retransmission timer of the BSR sent by the UE to the secondary base station;

- UE在辅基站小区内使用的 DRX参数； - DRX parameters used by the UE in the secondary base station cell;

- UE在辅基站小区内使用的 TAT定时器长度； - the length of the TAT timer used by the UE in the secondary base station cell;

- UE在辅基站小区内使用的周期性 PHR定时器长度； - the length of the periodic PHR timer used by the UE in the secondary base station cell;

- UE在辅基站小区内使用的 PHR禁止定时器长度； - the PHR prohibition timer length used by the UE in the secondary base station cell;

- UE在辅基站小区内使用的 PHR发送的路损变化门限。 - The path loss change threshold sent by the PHR used by the UE in the secondary base station cell.

物理层的参数可以包括以下任意一种或其任意组合： The parameters of the physical layer may include any one of the following or any combination thereof:

- UE在辅基站小区内使用的 SR资源的时频域位置； - a time-frequency domain location of the SR resources used by the UE in the secondary base station cell;

- UE在辅基站小区内使用的 CQI资源的时频域位置；- a time-frequency domain location of the CQI resource used by the UE in the secondary base station cell;

- UE在辅基站小区内使用的 SRS资源的时频域位置，注：以上三个参数在时域上包括周期、偏移，在频域上包括频点信息； - the time-frequency domain location of the SRS resource used by the UE in the secondary base station cell. Note: The above three parameters include a period and an offset in the time domain, and include frequency point information in the frequency domain;

- UE在辅基站小区内使用的 PRACH资源位置； - the location of the PRACH resource used by the UE in the secondary base station cell;

- UE在辅基站小区内使用的 preamble序列生成相关参数； - UE在辅基站小区内使用的去激活定时器长度。 - the UE generates a relevant parameter in the preamble sequence used in the secondary base station cell; - the length of the deactivation timer used by the UE in the secondary base station cell.

103、所述主基站发送第三消息至用户终端 UE, 所述第三消息中包括所述待分流 RB的标识和所述待分流 RB的配置参数，以使所述 UE 为所述待分流 RB建立第二分组数据汇聚协议 PDCP实体和第二无线链路控制 RLC实体并进行数据分流配置。 The primary base station sends a third message to the user terminal UE, where the third message includes the identifier of the to-be-offloaded RB and the configuration parameter of the to-be-offered RB, so that the UE And establishing a second packet data convergence protocol PDCP entity and a second radio link control RLC entity for the to-be-offloaded RB and performing data offload configuration.

主基站发送第三消息至 UE, 示例性的，该第三消息可以是数据分流配置消息，数据分流配置消息中包括待分流 RB的 RB标识和配置参数， UE在接收到该数据分流配置消息后，根据该消息中的内容，例如，待分流 RB的 RB标识和配置参数，为待分流 RB建立第二 PDCP实体和第二 RLC实体，其中， UE具有第一 PDCP实体，第一 RLC实体和 MAC实体，第二 PDCP实体和第二 RLC实***于 UE的第一 RLC实体与 MAC实体之间，如图 3所示。此外，第三消息中还可包括：分流类型标识，用于指示该数据分流为完全分流或者部分分流。 The primary base station sends a third message to the UE. For example, the third message may be a data offload configuration message, where the data offload configuration message includes an RB identifier and a configuration parameter of the to be offloaded RB, and after receiving the data offload configuration message, the UE receives the data offload configuration message. According to the content of the message, for example, the RB identifier and the configuration parameter of the to-be-offered RB, the second PDCP entity and the second RLC entity are established for the to-be-split RB, where the UE has the first PDCP entity, the first RLC entity, and the MAC The entity, the second PDCP entity and the second RLC entity are located between the first RLC entity and the MAC entity of the UE, as shown in FIG. In addition, the third message may further include: a traffic classification type identifier, configured to indicate that the data is offloaded to be completely offloaded or partially offloaded.

需要说明的是， UE的第二 PDCP实体与辅基站的 PDCP实体逻辑对应， UE的第二 RLC实体与辅基站的 RLC实体逻辑对应。 UE的第一 PDCP实体与主基站的 PDCP实体相对应， UE的第一 RLC实体与主基站的 RLC 实体相对应。这里的 "对应" 是逻辑上的一种关系，由于数据在传输的过程中，主基站与辅基站对数据进行怎样的操作， UE在接收数据时需要进行相对应的逆操作，因此，如图 3所示，从协议栈结构上看，两边在逻辑上是对等的。 It should be noted that the second PDCP entity of the UE logically corresponds to the PDCP entity of the secondary base station, and the second RLC entity of the UE logically corresponds to the RLC entity of the secondary base station. The first PDCP entity of the UE corresponds to the PDCP entity of the primary base station, and the first RLC entity of the UE corresponds to the RLC entity of the primary base station. The "correspondence" here is a logical relationship. Since the data is in the process of transmission, the primary base station and the secondary base station perform operations on the data, and the UE needs to perform corresponding inverse operations when receiving data, therefore, as shown in the figure As shown in Figure 3, from the perspective of the protocol stack structure, the two sides are logically equivalent.

可选的，UE在为待分流的各个 RB建立第二 PDCP实体和第二 RLC 实体后，向主基站发送数据分流配置响应消息，以通知主基站第二 PDCP 实体和第二 RLC实体的建立完成，如图 4所示。主基站接收 UE发送的数据分流配置响应消息。 Optionally, after establishing the second PDCP entity and the second RLC entity for each RB to be offloaded, the UE sends a data offload configuration response message to the primary base station to notify the primary base station that the establishment of the second PDCP entity and the second RLC entity is complete. , As shown in Figure 4. The primary base station receives the data offload configuration response message sent by the UE.

本实施例的方法，通过在 UE的第一 RLC实体与 MAC实体之间设置第二 PDCP 实体和第二 RLC 实体，来改变现有技术中对待分流数据的处理流程，对协议修改较小，并且对底层测量到的空口情况变化反应较快，动态分流的效果比较好。 In the method of this embodiment, the process of processing the data to be offloaded in the prior art is changed by setting the second PDCP entity and the second RLC entity between the first RLC entity and the MAC entity of the UE, and the protocol modification is small, and The response to the change of the air interface measured at the bottom layer is faster, and the effect of dynamic shunting is better.

进一步的，本实施例中，在主基站发送数据分流请求消息至辅基站之后，所述辅基站还判断是否已经为该 UE建立小区： Further, in this embodiment, the primary base station sends a data offload request message to the auxiliary base. After the station, the secondary base station further determines whether a cell has been established for the UE:

若辅基站已经为 UE建立小区，则根据所述 Qos参数为所述列表中的每个 RB建立 PDCP实体和 RLC实体并设置配置参数； If the secondary base station has established a cell for the UE, set a PDCP entity and an RLC entity for each RB in the list according to the Qos parameter, and set configuration parameters;

若辅基站没有为 UE建立小区，则辅基站为 UE建立一个小区，用以承载 RB ,且辅基站在为每个 RB建立 PDCP实体和 RLC实体的同时，还在所述小区和 UE 之间建立混合自动重传请求（ Hybrid Automatic Repeat Request, 简称 HARQ ) 实体。一般地，每个小区内需要建立 8 个 HARQ实体与一个 UE对应。 If the secondary base station does not establish a cell for the UE, the secondary base station establishes a cell for the UE to carry the RB, and the secondary base station establishes a PDCP entity and an RLC entity for each RB, and also establishes between the cell and the UE. Hybrid Automatic Repeat Request (HARQ) entity. Generally, eight HARQ entities need to be established in each cell to correspond to one UE.

进一步的，所述数据分流响应消息中还包括：所述 UE的前序编码 ( reamble ) ，所述 preamble为辅基站在判断所述 UE未与所述辅基站建立连接和 /或同步连接后由辅基站分配，用于在所述主基站接收所述 UE发送的数据分流配置响应消息之后，所述 UE使用所述 preamble向辅基站中的特定小区发起随机接入以接入所述辅基站。本实施例中，所述 preamble可以由被辅基站服务的小区分配。相应的，所述数据分流配置消息中还包括所述 reamble以及 reamble与小区的对应关系，以使 UE得知该 preamble。 Further, the data offload response message further includes: a preamble of the UE, where the preamble is determined by the secondary base station after determining that the UE does not establish a connection and/or a synchronous connection with the secondary base station The secondary base station allocates, after the primary base station receives the data offload configuration response message sent by the UE, the UE uses the preamble to initiate random access to a specific cell in the secondary base station to access the secondary base station. In this embodiment, the preamble may be allocated by a cell served by the secondary base station. Correspondingly, the data offload configuration message further includes a correspondence between the reamble and the reamble and the cell, so that the UE knows the preamble.

进一步的，数据分流响应消息中还包括： BSR门限值， BSR门限值为所述辅基站分配的、用于供所述 UE上报 BSR, BSR用于所述主基站和 /或辅基站为所述 UE分配上行传输资源。。相应的，所述数据分流配置消息中还包括所述 BSR门限值，以使 UE得知该 BSR门限值。 Further, the data offload response message further includes: a BSR threshold, where the BSR threshold is allocated by the secondary base station, and is used by the UE to report a BSR, where the BSR is used by the primary base station and/or the secondary base station The UE allocates an uplink transmission resource. . Correspondingly, the data offload configuration message further includes the BSR threshold, so that the UE knows the BSR threshold.

进一步的，所述主基站发送第一消息至辅基站后，还包括：当所述辅基站的緩存中的下行数据的数据量小于或等于所述辅基站设置的緩存门限时，所述主基站接收所述辅基站的数据请求；或，所述主基站根据所述辅基站周期性上报的所述辅基站的緩存情况，向所述辅基站发送数据。 Further, after the primary base station sends the first message to the secondary base station, the method further includes: when the data volume of the downlink data in the buffer of the secondary base station is less than or equal to a buffer threshold set by the secondary base station, the primary base station Receiving a data request of the secondary base station; or, the primary base station sends data to the secondary base station according to the buffering situation of the secondary base station periodically reported by the secondary base station.

在主基站发送数据分流请求消息至辅基站之后，所述辅基站还设置緩存门限，当辅基站的緩存中的下行数据的数据量小于或等于所述緩存门限时，所述辅基站向所述主基站请求数据。这一緩存门限不需要通知主基站，也不需要通知 UE, 因此也不需要携带在数据分流响应消息中。或者，辅基站周期性的向所述主基站报告所述辅基站的緩存情况，以使所述主基站根据上报的緩存情况（例如，辅基站的緩存下行数据的数据量小于或等于某个门限值时），向所述辅基站发送数据。 After the primary base station sends a data offload request message to the secondary base station, the secondary base station is further configured. The buffer threshold is set. When the data volume of the downlink data in the buffer of the secondary base station is less than or equal to the buffer threshold, the secondary base station requests data from the primary base station. This buffer threshold does not need to notify the primary base station, nor does it need to inform the UE, and therefore does not need to be carried in the data offload response message. Or, the secondary base station periodically reports the buffering status of the secondary base station to the primary base station, so that the primary base station is configured according to the reported buffering situation (for example, the data volume of the buffered downlink data of the secondary base station is less than or equal to a certain gate) When the limit is), data is transmitted to the secondary base station.

可选的，在所述主基站接收所述 UE发送的数据分流配置响应消息之后，还包括： Optionally, after the receiving, by the primary base station, the data offload configuration response message sent by the UE, the method further includes:

主基站接收来自所述辅基站或者所述 UE 的数据分流配置准备就绪消息，并开始进行数据分流传输。在辅基站的配置完成且 UE与辅基站建立同步连接后，需要通知主基站控制面的配置完成，配置前后各结点的结构如图 4所示。本实施例中，数据分流配置准备就绪消息可以是由 UE发出的，也可以是由辅基站发出的，需要说明的是，如果数据分流配置准备就绪消息是由辅基站发出的，则主基站可以判定配置完成；如果是由 UE发出的，则主基站在接收该数据分流配置准备就绪消息后 , 还需要等待辅基站发送一个数据分流配置准备就绪消息，才可以进行数据分流传输。 The primary base station receives the data offload configuration ready ready message from the secondary base station or the UE, and starts data offload transmission. After the configuration of the secondary base station is completed and the UE establishes a synchronous connection with the secondary base station, the configuration of the control plane of the primary base station needs to be notified, and the structure of each node before and after configuration is as shown in FIG. 4 . In this embodiment, the data offload configuration ready message may be sent by the UE or may be sent by the secondary base station. It should be noted that if the data offload configuration ready message is sent by the secondary base station, the primary base station may If the configuration is complete, if the primary base station receives the data offload configuration ready message, the primary base station needs to wait for the secondary base station to send a data offload configuration ready message before the data offloading can be performed.

实际操作中，辅基站的空口状况发生变化或者其它原因，会导致辅基站可以分担的数据量发生变化。这种情况下，可通过 X2 口向主基站申请调整数据分担量，更新配置参数，其中，更新的配置参数包括 BSR门限、 RB配置参数等，更新的过程包括以下步骤： In actual operation, if the air interface status of the secondary base station changes or other causes, the amount of data that the secondary base station can share varies. In this case, the X2 port can apply to the primary base station to adjust the data sharing amount and update the configuration parameters. The updated configuration parameters include the BSR threshold and the RB configuration parameters. The update process includes the following steps:

所述主基站接收来自所述辅基站的数据分流配置修改请求；肖 , ¾，所述数据分流配置修改请求消息中包括待修改的 RB配置参数和待修改的 BSR门限；和 The primary base station receives the data offload configuration modification request from the secondary base station; and the data offload configuration modification request message includes the RB configuration parameter to be modified and the BSR threshold to be modified;

所述主基站或辅基站向 UE发送数据分流配置修改消息，所述数据分流配置修改消息中包括所述待修改的 RB 配置参数和所述待修改的 BSR门限。 The primary base station or the secondary base station sends a data offload configuration modification message to the UE, where the data offload configuration modification message includes the RB configuration parameter to be modified and the to be modified. BSR threshold.

示例性的，更新过程可具体如下： Exemplarily, the update process can be as follows:

第一步：辅基站向主基站发送数据分流配置修改请求消息，所述数据分流配置修改请求消息中包括待修改的 RB配置参数和 BSR门限；第二步：辅基站接收来自主基站的数据分流配置修改请求响应消息； The first step: the secondary base station sends a data offload configuration modification request message to the primary base station, where the data offload configuration modification request message includes the RB configuration parameter to be modified and the BSR threshold. The second step: the secondary base station receives the data offload from the primary base station. Configure a modification request response message;

第三步：辅基站向 UE发送数据分流配置修改消息，所述数据分流配置修改消息中包括待修改的 RB配置参数和 BSR门限； The third step: the secondary base station sends a data offload configuration modification message to the UE, where the data offload configuration modification message includes the RB configuration parameter to be modified and the BSR threshold.

第四步：辅基站接收 UE返回的数据分流配置修改响应消息。 Step 4: The secondary base station receives the data offload configuration modification response message returned by the UE.

作为本发明的另外一种实施方式，该更新过程还可具体为：第一步：主基站接收来自辅基站的数据分流配置修改请求;肖 , ¾ , 所述数据分流配置修改请求消息中包括待修改的 RB配置参数和 BSR门限； As another implementation manner of the present invention, the update process may further be: Step 1: The primary base station receives a data offload configuration modification request from the secondary base station; and, in the data offload configuration modification request message, includes Modified RB configuration parameters and BSR thresholds;

第二步：主基站向辅基站发送数据分流配置修改请求响应;肖 , ¾；第三步：主基站向 UE发送数据分流配置修改消息，所述数据分流配置修改消息中包括待修改的 RB配置参数和 BSR门限； The second step: the primary base station sends a data offload configuration modification request response to the secondary base station; Xiao, 3⁄4; The third step: the primary base station sends a data offload configuration modification message to the UE, where the data offload configuration modification message includes the RB configuration to be modified. Parameters and BSR thresholds;

第四步：主基站接收 UE返回的数据分流配置修改响应消息。 Step 4: The primary base station receives the data offload configuration modification response message returned by the UE.

在上述数据分流配置方法的基础上，本实施例还提供一种下行 ( SGW— UE ) 数据传输方法，如图 5 所示，本实施例的方法是基于部分分流的下行数据的传输方法，当所述方法的数据分流类型为部分分流时，该方法包括： On the basis of the foregoing data offloading configuration method, the embodiment further provides a downlink (SGW-UE) data transmission method. As shown in FIG. 5, the method in this embodiment is based on a partially offloaded downlink data transmission method. When the data offload type of the method is partial offload, the method includes:

201、主基站的 PDCP实体接收来自 SGW的数据，并对所述数据进行处理，形成第一数据。 201. The PDCP entity of the primary base station receives data from the SGW, and processes the data to form first data.

首先需要说明的是，这里的部分分流是指一个 RB的数据部分经由辅基站传输，部分经由主基站传输。 First, it should be noted that the partial offload here means that the data part of one RB is transmitted via the secondary base station and partly transmitted via the primary base station.

具体的，主基站的 PDCP实体所做的处理包括数据加密和头压缩。本实施例中，只有主基站从 SGW接收数据，辅基站不接收来自 SGW的数据。 Specifically, the processing performed by the PDCP entity of the primary base station includes data encryption and header compression. In this embodiment, only the primary base station receives data from the SGW, and the secondary base station does not receive data from the SGW.

202、主基站的 RLC实体给所述第一数据添加第一 RLC序号，形成第二数据，并将所述第二数据中待分流的分流数据发送至辅基站的 PDCP实体。 202. The RLC entity of the primary base station adds a first RLC sequence number to the first data, and forms a second data, and sends the offloaded data to be offloaded in the second data to the PDCP entity of the secondary base station.

主基站的 RLC实体给所述第一数据添加第一 RLC序号后，送到辅基站中的 PDCP实体。示例性的，如图 6所示，一个 RB数据包在主基站的 RLC实体被加上序号 "X+1", 另一个 RB数据包在主基站的 RLC 实体被加上序号 "γ+1", 每个 RLC SDU都对应一个单独的 RLC序号。 The RLC entity of the primary base station adds the first RLC sequence number to the first data and sends it to the PDCP entity in the secondary base station. Exemplarily, as shown in FIG. 6, one RB packet is added with the sequence number "X+1" in the RLC entity of the primary base station, and the serial number "γ+1" is added to the RLC entity of the primary base station. Each RLC SDU corresponds to a single RLC sequence number.

203、辅基站的 PDCP 实体将所述分流数据发送至辅基站的 RLC 实体。 203. The PDCP entity of the secondary base station sends the offloaded data to the RLC entity of the secondary base station.

示例性的，辅基站的 PDCP 实体接收来自主基站的分流数据后，对该分流数据做透明处理，即不做处理，然后将所述分流数据发送至辅基站的 RLC 实体。由于 PDCP 实体的基本功能已经在主基站的 PDCP 实体中实现了，如数据加密、头压缩等，因此辅基站的 PDCP实体可以不用对分流数据做处理。 Illustratively, after receiving the offloaded data from the primary base station, the PDCP entity of the secondary base station transparently processes the offloaded data, that is, does not process, and then sends the offloaded data to the RLC entity of the secondary base station. Since the basic functions of the PDCP entity have been implemented in the PDCP entity of the primary base station, such as data encryption, header compression, etc., the PDCP entity of the secondary base station can not process the offloaded data.

204、辅基站处理所述待分流数据，并将所述处理后的待分流数据发送至 UE。 204. The secondary base station processes the data to be offloaded, and sends the processed data to be offloaded to the UE.

如图 6 所示，辅基站处理所述待分流数据，示例性的，首先，辅基站的 RLC 实体将接收到的所述分流数据进行分段级联，然后添加第二 RLC序号，形成第三数据，并将所述第三数据发送至 MAC层。本实施例的 "分段级联" 包含三个处理过程：分段，就是将长度不同的高层 PDU分组进行分段重组为较小的 RLC负荷单元（PU ) ；级联，当一个 RLC SDU的内容不能填满一个完整的 RLC PDU时，可以将下一个 RLC SDU的第一段也放在这个 PU中，与前一个 RLC SDU的最后一段级联在一起；填充，当 RLC SDU的内容不能填满一个完整的 RLC PDU且无法进行级联时，可以将剩余的空间用填充比特来填满。 As shown in FIG. 6, the secondary base station processes the data to be offloaded. Illustratively, first, the RLC entity of the secondary base station performs segmentation concatenation of the received offloaded data, and then adds a second RLC sequence number to form a third. Data, and the third data is sent to the MAC layer. The "segment cascading" of this embodiment includes three processes: segmentation, which is to segment and reassemble high-level PDU packets of different lengths into smaller RLC load units (PUs); cascading, when an RLC SDU When the content cannot fill a complete RLC PDU, the first segment of the next RLC SDU can also be placed in the PU, and the last segment of the previous RLC SDU is cascaded; padding, when the content of the RLC SDU cannot be filled Full of a full RLC PDU and no When the method is cascaded, the remaining space can be filled with padding bits.

辅基站的 RLC 实体将数据包进行分段级联后，再加上一个第二 RLC序号，形成第三数据，即 RLC PDU, 图中两个 RLC实体分别为自己产生的数据包加上序号 "Κ+Γ，和 "P+1", 然后送交 MAC实体。 The RLC entity of the secondary base station segments the data packets in stages, and adds a second RLC sequence number to form a third data, that is, an RLC PDU. In the figure, the two RLC entities respectively add a sequence number to the data packet generated by itself. Κ+Γ, and "P+1", then sent to the MAC entity.

具体的，辅基站的 MAC实体对所述第三数据进行处理后，发送至物理层，以使物理层（Phy ) 将处理后的第三数据发送至用户终端。这里的 "处理" 可以具体是复用，即将一个或多个 RB对应的第三数据合并在一起。如果某一个 TTI仅仅收到一个 RB送来的第三数据，则无需进行复用。 Specifically, the MAC entity of the secondary base station processes the third data, and then sends the third data to the physical layer, so that the physical layer (Phy) sends the processed third data to the user terminal. The "processing" here can be specifically multiplexed, that is, the third data corresponding to one or more RBs are combined. If a TTI receives only the third data sent by one RB, no multiplexing is required.

来自多个 RB的数据包，在辅基站的 MAC实体进行复用后，形成 MAC PDU, 最后送交物理层发送。示例性的，如图 6中所示， MAC实体将序号为 "Κ+Γ，和 "P+1"的数据包放在同一个 MAC PDU中，并加上了 "MAC Header" , 最终形成一个 MAC PDU。最后，物理层将处理后的第三数据发送至 UE。 The data packets from multiple RBs are multiplexed by the MAC entity of the secondary base station to form a MAC PDU, which is then sent to the physical layer for transmission. Exemplarily, as shown in FIG. 6, the MAC entity puts the data packets with the sequence numbers "Κ+Γ, and "P+1" in the same MAC PDU, and adds "MAC Header" to form a MAC PDU Finally, the physical layer sends the processed third data to the UE.

本实施例的下行数据的传输方法，当数据分流类型为部分分流时，通过将一部分分流的数据传给辅基站的 PDCP实体，以通过辅基站发送给 UE, 当辅基站的空口条件发生改变时，辅基站的 MAC实体能够及时将情况反应给主基站，从而实现动态分流，且对协议的修改较小，易于实施。 In the downlink data transmission method of the embodiment, when the data offload type is partially offloaded, the part of the offloaded data is transmitted to the PDCP entity of the secondary base station, and is sent to the UE by the secondary base station, when the air interface condition of the secondary base station changes. The MAC entity of the secondary base station can respond to the primary base station in time to implement dynamic offloading, and the modification of the protocol is small and easy to implement.

可选的，在主基站的 RLC实体给所述第一数据添加第一 RLC序号之后，还包括： Optionally, after the RLC entity of the primary base station adds the first RLC sequence number to the first data, the method further includes:

辅基站将待分流的所述第二数据预先存储在辅基站的 RLC实体的緩存中。 The secondary base station pre-stores the second data to be offloaded in a cache of the RLC entity of the secondary base station.

本实施例中，辅基站可以预先将第二数据预先存储在辅基站的 RLC实体的緩存中，当緩存中的数据量小于或等于某一门限时，就再传一些数据。当辅基站的调度器决定传输数据时，可以直接从辅基站的緩存中取出数据包，因此可以加快处理速度。 In this embodiment, the secondary base station may pre-store the second data in the cache of the RLC entity of the secondary base station. When the amount of data in the buffer is less than or equal to a certain threshold, some data is transmitted. When the scheduler of the secondary base station decides to transmit data, it can directly slow down from the secondary base station. The data packet is taken out in the memory, so the processing speed can be speeded up.

进一步的，主基站的 RLC实体给所述第一数据添加第一 RLC序号，具体为： Further, the RLC entity of the primary base station adds a first RLC sequence number to the first data, specifically:

主基站的 RLC实体对所述第一数据进行分段级联处理，并给分段级联后的所述第一数据添加第一 RLC序号。 The RLC entity of the primary base station performs segmentation concatenation processing on the first data, and adds a first RLC sequence number to the first data after the segmentation cascade.

本实施例中，如图 7所示，主基站的 RLC实体对所述第一数据进行级联处理，即将来自 PDCP实体的若干个数据包合为一个，形成较大的数据包，但最大不能超过协议要求的数据包最大尺寸 8188Bytes。示例性的，图 7中是将两个 RLC SDU级联成一个 RLC PDU, 再送交辅基站的 PDCP实体。这种方式的优点是来自 SGW的多个数据包共用主基站 RLC实体中的一个序号，所以占用更少的 RLC序号，当数据量较大而空口条件较好时，减小了因 RLC窗口推动受限而造成的数据时延。 In this embodiment, as shown in FIG. 7, the RLC entity of the primary base station performs concatenation processing on the first data, that is, several data packets from the PDCP entity are combined into one to form a larger data packet, but the maximum cannot be The maximum packet size exceeding the protocol requirement is 8188 Bytes. For example, in Figure 7, the two RLC SDUs are concatenated into one RLC PDU and then sent to the PDCP entity of the secondary base station. The advantage of this method is that multiple data packets from the SGW share one serial number in the RLC entity of the primary base station, so occupy less RLC serial number. When the data volume is large and the air interface condition is good, the RLC window is reduced. Restricted data delay.

需要说明的是，上述两个技术特征 "主基站将待分流的所述第一数据预先存储在辅基站的 RLC实体的緩存中" 和 "主基站的 RLC实体对所述第一数据进行级联" ，可以自由组合来实施的，组合后有四种实施方式： It should be noted that the foregoing two technical features "the primary base station pre-stores the first data to be offloaded in the cache of the RLC entity of the secondary base station" and "the RLC entity of the primary base station cascades the first data. " , can be freely combined to implement, there are four implementations after the combination:

辅基站的物理层将处理后的待分流数据发送出去后， UE的物理层接收来自辅基站的第四数据，所述第四数据依次经过 UE的 MAC实体、第二 RLC实体、第二 PDCP实体、第一 RLC实体和第一 PDCP实体的处理，形成第五数据。 UE 对数据包的处理与主基站和辅基站对数据包的处理互为逆过程，即：

After the physical layer of the secondary base station sends the processed data to be offloaded, the physical layer of the UE receives the fourth data from the secondary base station, and the fourth data sequentially passes through the MAC entity, the second RLC entity, and the second PDCP entity of the UE. And the first RLC entity and the first PDCP entity Processing, forming the fifth data. The processing of the data packet by the UE is inverse to the processing of the data packet by the primary base station and the secondary base station, namely:

UE的物理层接收来自辅基站的第四数据； The physical layer of the UE receives the fourth data from the secondary base station;

UE的 MAC实体将第四数据的每个数据包分成若干个 RLC PDU; UE的第二 RLC实体将每个 RLC PDU还原为分段级联之前的数据包，并去掉第二 RLC序号，并发送给 UE的第二 PDCP实体； The MAC entity of the UE divides each data packet of the fourth data into several RLC PDUs; the second RLC entity of the UE restores each RLC PDU to a data packet before the segmentation cascade, and removes the second RLC sequence number, and sends a second PDCP entity to the UE;

UE的第二 PDCP实体将还原后的数据包发送给 UE的第一 RLC实体； The second PDCP entity of the UE sends the restored data packet to the first RLC entity of the UE;

UE的第一 RLC实体去除数据包的第一 RLC序号，并将级联的包还原成多个包，再送交给 UE的第一 PDCP实体； The first RLC entity of the UE removes the first RLC sequence number of the data packet, and restores the cascaded packet to multiple packets, and then sends the first RCP sequence to the first PDCP entity of the UE;

UE的第一 PDCP实体还原第一处理，得到第五数据，最终得到由 SGW发送来的数据。 The first PDCP entity of the UE restores the first process, obtains the fifth data, and finally obtains the data sent by the SGW.

UE对数据包进行的具体处理可类比上述下行数据的传输方法，在此不再赘述。 The specific processing performed by the UE on the data packet can be analogized to the transmission method of the downlink data described above, and details are not described herein again.

本实施例的基站***，部分分流的数据在经过主基站的 RLC实体的处理后，进入辅基站的 PDCP 实体，与辅基站的 PDCP 实体和 RLC 实体相对应的 , 本实施例在 UE的第一 RLC实体与 MAC实体之间设置第二 PDCP 实体和第二 RLC 实体，改变现有技术中对待分流数据的处理流程，对底层测量到的空口情况变化反应较快，动态分流的效果较好。 In the base station system of this embodiment, the partially-divided data is processed by the RLC entity of the primary base station, and then enters the PDCP entity of the secondary base station, and corresponds to the PDCP entity and the RLC entity of the secondary base station. The second PDCP entity and the second RLC entity are set between the RLC entity and the MAC entity, and the processing flow of the data to be offloaded in the prior art is changed, and the change of the air interface condition measured by the bottom layer is faster, and the dynamic shunting effect is better.

本实施例还提供一种下行数据传输方法，如图 8 所示，本实施例的方法是基于完全分流的数据传输方法，包括： The embodiment further provides a downlink data transmission method. As shown in FIG. 8, the method in this embodiment is based on a completely offloaded data transmission method, including:

301、主基站的 PDCP实体接收来自 SGW的数据，并对所述数据进行处理，形成第一数据； 301. A PDCP entity of the primary base station receives data from the SGW, and processes the data to form first data.

首先需要说明的是，这里的完全分流是指一个 RB的数据全部经由辅基站传输。 First of all, it should be noted that the complete offloading here means that the data of one RB is all transmitted via the secondary base station.

具体的，主基站的 PDCP 实体所进行的处理包括数据加密和头压缩。本实施例中，只有主基站从 SGW接收数据，辅基站不接收来自 SGW 的数据。 Specifically, the processing performed by the PDCP entity of the primary base station includes data encryption and header compression. Shrink. In this embodiment, only the primary base station receives data from the SGW, and the secondary base station does not receive data from the SGW.

302、主基站的 RLC 实体接收所述第一数据，并将所述第一数据发送至辅基站的 PDCP实体。 302. The RLC entity of the primary base station receives the first data, and sends the first data to a PDCP entity of the secondary base station.

本实施例中，主基站的 RLC实体对该第一数据做透明处理，即不做任何处理。 In this embodiment, the RLC entity of the primary base station performs transparent processing on the first data, that is, does not perform any processing.

303、辅基站的 PDCP实体接收来自主基站的所述第一数据，并将所述第一数据发送至辅基站的 RLC实体。 303. The PDCP entity of the secondary base station receives the first data from the primary base station, and sends the first data to an RLC entity of the secondary base station.

辅基站的 PDCP 实体接收来自主基站的第一数据后，对该第一数据做透明处理，即不做任何处理，然后将第一数据发送至辅基站的 RLC 实体。由于 PDCP实体的基本功能已经在主基站的 PDCP实体中实现了，如数据加密、头压缩等，因此辅基站的 PDCP实体可以不用对分流数据做任何处理。 After receiving the first data from the primary base station, the PDCP entity of the secondary base station transparently processes the first data, that is, does not perform any processing, and then sends the first data to the RLC entity of the secondary base station. Since the basic functions of the PDCP entity have been implemented in the PDCP entity of the primary base station, such as data encryption, header compression, etc., the PDCP entity of the secondary base station can not perform any processing on the offloaded data.

304、辅基站处理所述第一数据，并将处理后的所述第一数据发送至 UE。 304. The secondary base station processes the first data, and sends the processed first data to the UE.

可选的，辅基站处理所述第一数据具体包括以下内容：辅基站的 RLC 实体将接收到的所述第一数据进行分段级联，然后添加第二 RLC 序号，形成第三数据，并将所述第三数据发送至 MAC实体。辅基站的 MAC 实体对所述第三数据进行处理后，形成第四数据，并将第四数据发送至物理层，以使物理层将所述第四数据发送至 UE。 Optionally, the processing, by the secondary base station, the first data includes: the RLC entity of the secondary base station performs segmentation concatenation of the received first data, and then adds a second RLC sequence number to form a third data, and The third data is sent to the MAC entity. After processing the third data by the MAC entity of the secondary base station, the fourth data is formed, and the fourth data is sent to the physical layer, so that the physical layer sends the fourth data to the UE.

这里的 "处理" 可以具体是复用，即将一个或多个 RB对应的第三数据合并在一起。如果某一个传输时间间隔（ Transmission Time Interval, 简称 TTI ) 仅仅收到一个 RB送来的第三数据，则无需进行复用。 Here, "processing" may specifically be multiplexing, that is, combining the third data corresponding to one or more RBs. If a Transmission Time Interval (TTI) receives only the third data sent by one RB, no multiplexing is required.

由于进行完全分流的数据不需要经过主基站来传输，因此，本实施例中，主基站的 RLC实体无需给数据包分配 RLC序号，这样简化了处理流程，减少了信令开销，加快了数据的传输。除此之外，本实施例的下行数据传输方法的主基站与辅基站的工作原理与上述实施例相同，在此不再赘述。 In this embodiment, the RLC entity of the primary base station does not need to allocate the RLC sequence number to the data packet, which simplifies the processing flow, reduces the signaling overhead, and speeds up the data. transmission. In addition to this, this embodiment The working principle of the primary and secondary base stations of the downlink data transmission method is the same as that of the foregoing embodiment, and details are not described herein again.

进一步的， UE的物理层接收来自辅基站的第四数据，所述第四数据依次经过 UE的 MAC实体、第二 RLC实体、第二 PDCP实体、第一 RLC实体和第一 PDCP实体的处理，形成第五数据。 UE对数据包的处理与主基站和辅基站对数据包的处理互为逆过程，在此也不再贅述。 Further, the physical layer of the UE receives the fourth data from the secondary base station, where the fourth data is processed by the MAC entity of the UE, the second RLC entity, the second PDCP entity, the first RLC entity, and the first PDCP entity. Form the fifth data. The processing of the data packet by the UE and the processing of the data packet by the primary base station and the secondary base station are mutually reversed, and are not described herein again.

本实施例中，由于进行完全分流的数据不需要经过主基站来传输，因此，主基站的 RLC实体无需给数据包分配 RLC序号，这样简化了处理流程，减少了信令开销，加快了数据的传输。此外，与辅基站的 PDCP 实体和 RLC 实体相对应的，本实施例在 UE的第一 RLC 实体与 MAC 实体之间设置第二 PDCP 实体和第二 RLC 实体，改变现有技术中对待分流数据的处理流程，对底层测量到的空口情况变化反应较快，动态分流的效果较好。 In this embodiment, since the completely split data does not need to be transmitted through the primary base station, the RLC entity of the primary base station does not need to allocate the RLC sequence number to the data packet, which simplifies the processing flow, reduces signaling overhead, and speeds up data. transmission. In addition, corresponding to the PDCP entity and the RLC entity of the secondary base station, this embodiment sets a second PDCP entity and a second RLC entity between the first RLC entity and the MAC entity of the UE, and changes the data to be offloaded in the prior art. The processing flow has a faster response to the changes in the air interface measured at the bottom layer, and the dynamic shunting effect is better.

本实施例还提供一种上行（UE— SGW )数据传输方法，如图 9所示，本实施例的方法是上行数据的传输方法，包括： The embodiment further provides an uplink (UE-SGW) data transmission method. As shown in FIG. 9, the method in this embodiment is a method for transmitting uplink data, including:

401、 UE向主基站和 /或辅基站上报 BSR, 以使主基站和 /或辅基站为所述 UE分配上行传输资源。 401. The UE reports the BSR to the primary base station and/or the secondary base station, so that the primary base station and/or the secondary base station allocate uplink transmission resources to the UE.

UE在上 BSR时，对于没有参与分流的 RB , UE只向主基站上才艮 BSR; 对于参与分流的 RB, 如果配置为部分分流， UE优先向辅基站发送 BSR。 When the UE is in the upper BSR, the UE only sends the BSR to the primary base station for the RBs that do not participate in the offloading. For the RBs participating in the offloading, if configured to be partially offloaded, the UE preferentially sends the BSR to the secondary base station.

进一步的，当所述方法的数据分流类型为部分分流时，所述 UE 向主基站和 /或辅基站上报 BSR, 具体为： Further, when the data offloading type of the method is part of the offloading, the UE reports the BSR to the primary base station and/or the secondary base station, specifically:

在判断待传数据的总量小于或等于预先配置的 BSR门限后，向所述辅基站上报 BSR; 在判断待分流数据的总量大于预先配置的 BSR 门限后，向所述辅基站上报 BSR, 并向所述主基站上报待分流数据的总量与 BSR门限的差值。也就是说，如果参与分流的 RB中的待分流数据总量小于或等于预先配置的 BSR 门限，则只向辅基站上报 BSR, 如果待分流数据总量大于 BSR门限，则向辅基站上报 BSR门限下的数据，其他数据向主基站上报，即向辅基站上报 BSR, 向主基站上报待分流数据的总量与 BSR 门限的差值。如果配置为完全分流，则只向主基站上报 BSR。 After determining that the total amount of the data to be transmitted is less than or equal to the pre-configured BSR threshold, the BSR is reported to the secondary base station; after determining that the total amount of the data to be offloaded is greater than the pre-configured BSR threshold, the BSR is reported to the secondary base station. And reporting, to the primary base station, a difference between the total amount of the offloaded data and the BSR threshold. That is, if the total amount of the data to be offloaded in the RBs that are in the offloading is less than or equal to the pre-configured BSR threshold, the BSR is reported only to the secondary base station. If the total amount of data to be offloaded is greater than the BSR threshold, the BSR threshold is reported to the secondary base station. The data is sent to the primary base station, that is, the BSR is reported to the secondary base station, and the difference between the total amount of the traffic to be diverted and the BSR threshold is reported to the primary base station. If the configuration is complete, the BSR is reported only to the primary base station.

示例性的，如图 10所示， BSR门限为 600Bytes, 当 UE需要上报 800Bytes时，则向主基站上报 200Bytes, 向辅基站上报 600Bytes。主基站和辅基站收到 BSR后，分别为 UE分配上行传输资源，两个基站之间不需要相互协商。 For example, as shown in FIG. 10, the BSR threshold is 600 Bytes. When the UE needs to report 800 Bytes, it reports 200 Bytes to the primary base station and 600 Bytes to the secondary base station. After receiving the BSR, the primary base station and the secondary base station allocate uplink transmission resources to the UE respectively, and the two base stations do not need to negotiate with each other.

402、 UE的第一 PDCP 实体对所述数据进行第一处理，形成第一数据。 402. The first PDCP entity of the UE performs the first processing on the data to form the first data.

具体的，第一 PDCP实体所做的处理包括数据加密和头压缩。 UE 在收到上行资源后，如果上行资源是由主基站分配的，则 MAC实体直接向第一 RLC实体索要数据；如果上行资源是由辅基站分配的，则 MAC 实体向第二 RLC实体索要数据，第二 RLC实体再向第一 RLC实体索要数据。 Specifically, the processing performed by the first PDCP entity includes data encryption and header compression. After receiving the uplink resource, if the uplink resource is allocated by the primary base station, the MAC entity directly requests data from the first RLC entity; if the uplink resource is allocated by the secondary base station, the MAC entity requests data from the second RLC entity. The second RLC entity then requests data from the first RLC entity.

403、 UE的第一 RLC实体将所述第一数据进行分段级联，添加第一 RLC 序号，形成第二数据，并根据接收到的辅基站分配的上行传输资源将所述第二数据中待分流的分流数据发送至第二 PDCP实体。 403. The first RLC entity of the UE performs segmentation concatenation of the first data, adds a first RLC sequence number, forms second data, and performs the second data according to the received uplink transmission resource allocated by the secondary base station. The offloaded data to be offloaded is sent to the second PDCP entity.

本实施例中， UE的第一 RLC实体将所述第一数据进行分段级联，然后添加第一 RLC序号后，送到第二 PDCP 实体中。示例性的，如图 10和图 11所示，作为本发明的一种实施方式， UE收到上行资源之前，其数据都存放在主 RLC的緩存中。示例性的， MAC实体收到辅基站分配的上行资源，经过调度器决策，决定让其中一个 RB传 150Byte, 另一个 RB传 180Byte。该分配信息经由第二 RLC实体传到第一 RLC实体后，两个 RB的第一 RLC实体分别将自己緩存中的数据包进行分段级联，加上第一 RLC序号，形成两个 RLC PDU。其中一个大小为 150Byte, 第一 RLC序号为 "X+ 1" ,另一个大小为 180Byte ,第一 RLC序号为 " Y+ 1"。 In this embodiment, the first RLC entity of the UE performs segmentation concatenation of the first data, and then adds the first RLC sequence number to the second PDCP entity. Exemplarily, as shown in FIG. 10 and FIG. 11 , as an implementation manner of the present invention, before receiving the uplink resource, the UE stores the data in the cache of the primary RLC. Exemplarily, the MAC entity receives the uplink resource allocated by the secondary base station, and after scheduling the decision, determines that one of the RBs transmits 150 bytes, and the other RB transmits 180 bytes. After the allocation information is transmitted to the first RLC entity via the second RLC entity, the first RLC entities of the two RBs respectively segment and concatenate the data packets in the cache. Together with the first RLC sequence number, two RLC PDUs are formed. One of the sizes is 150 Bytes, the first RLC number is "X+ 1", the other size is 180 Bytes, and the first RLC sequence number is "Y+ 1".

404、 UE的第二 PDCP实体将所述分流数据发送至 UE的第二 RLC 实体。 404. The second PDCP entity of the UE sends the offload data to a second RLC entity of the UE.

第二 PDCP 实体接收分流数据后，对该分流数据做透明处理，即不做任何处理，然后将所述分流数据发送至第二 RLC实体。由于 PDCP 实体的基本功能已经在第一 PDCP实体中实现了，如数据加密、头压缩等，因此第二 PDCP实体可以不用对分流数据做任何处理。 After receiving the offloaded data, the second PDCP entity transparently processes the offloaded data, that is, does not perform any processing, and then sends the offloaded data to the second RLC entity. Since the basic functions of the PDCP entity have been implemented in the first PDCP entity, such as data encryption, header compression, etc., the second PDCP entity may not have to do any processing on the offloaded data.

405、 UE的第二 RLC实体将接收到的所述分流数据添加第二 RLC 序号，形成第三数据。 405. The second RLC entity of the UE adds the second RLC sequence number to the received shunt data to form third data.

具体的， RLC PDU经过从 PDCP层透传后，到达辅 RLC层。两个第二 RLC 实体将这两个包分别加自己的第二 RLC序号后，形成 RLC PDU, 示例性的，图 9 中两个第二 RLC 实体分别为自己产生的数据包加上第二 RLC序号 "Κ+Γ，和 "P+1", 然后送交 UE的 MAC实体。 Specifically, after the RLC PDU is transparently transmitted from the PDCP layer, it reaches the secondary RLC layer. The two second RLC entities respectively add the second RLC sequence numbers to form the RLC PDUs. Illustratively, the two second RLC entities in FIG. 9 respectively add the second RLC to the data packets generated by themselves. The sequence numbers "Κ+Γ, and "P+1" are then sent to the MAC entity of the UE.

406、 UE将处理后的第三数据发送至所述辅基站。 406. The UE sends the processed third data to the secondary base station.

具体的， UE的 MAC实体对所述第三数据进行处理后，形成第四数据，并将第四数据发送至物理层，以使物理层将处理后的第三数据发送至主基站和 /或辅基站。示例性的，如图 10中所示， MAC实体将序号为 "Κ+Γ，和 "P+1"的数据包放在同一个 MAC PDU中，并加上了 "MAC Header" , 最终形成一个 MAC PDU。最后，物理层将第四数据发送至主基站和 /或辅基站。 Specifically, the MAC entity of the UE processes the third data to form fourth data, and sends the fourth data to the physical layer, so that the physical layer sends the processed third data to the primary base station and/or Secondary base station. Exemplarily, as shown in FIG. 10, the MAC entity puts the data packets with the sequence numbers "Κ+Γ, and "P+1" in the same MAC PDU, and adds "MAC Header" to form a MAC PDU Finally, the physical layer transmits the fourth data to the primary base station and/or the secondary base station.

进一步的，在第一 RLC实体给所述第一数据添加第一 RLC序号之后，还包括： Further, after the first RLC entity adds the first RLC sequence number to the first data, the method further includes:

UE将待分流的所述第一数据预先存储在第二 RLC实体的緩存中。进一步的，第一 RLC实体给所述第一数据添加第一 RLC序号，具体为：第一 RLC实体对所述第一数据进行级联，并给级联后的所述第一数据添加第一 RLC序号。 The UE pre-stores the first data to be offloaded in a cache of the second RLC entity. Further, the first RLC entity adds a first RLC sequence number to the first data, specifically: The first RLC entity concatenates the first data, and adds a first RLC sequence number to the concatenated first data.

本实施例中，第一 RLC实体对所述第一数据进行级联处理，但不进行分段，即将若干个来自第一 PDCP实体的数据包合为一个，形成较大的数据包，但最大不能超过协议要求的数据包最大尺寸 8188Bytes。这种方式的优点是多个数据包共用第一 RLC 实体中的一个序号，所以占用更少的 RLC序号，当数据量较大而空口条件较好时，减小了因 RLC 窗口推动受限而造成的数据时延。 In this embodiment, the first RLC entity performs concatenation processing on the first data, but does not perform segmentation, that is, several data packets from the first PDCP entity are combined into one to form a larger data packet, but the maximum The maximum size of the packet that cannot be exceeded by the protocol is 8188 Bytes. The advantage of this method is that multiple data packets share one sequence number in the first RLC entity, so that less RLC sequence numbers are occupied, and when the amount of data is large and the air interface condition is good, the limitation of RLC window pushing is reduced. The resulting data delay.

需要说明的是，上述两个技术特征 "UE将待分流的所述第一数据预先存储在第二 RLC实体的緩存中" 和 "UE的第一 RLC 实体对所述第一数据进行级联" ，可以自由组合来实施的，组合后有四种实施方式： It should be noted that the above two technical features "the UE pre-stores the first data to be offloaded in the cache of the second RLC entity" and "the first RLC entity of the UE cascading the first data" , can be freely combined to implement, there are four implementations after the combination:

UE的物理层将第四数据发出后，辅基站的物理层接收来自 UE的第四数据，所述第四数据依次经过辅基站的 MAC 实体、 RLC 实体和 PDCP实体的处理，以及主基站的 RLC实体和 PDCP实体的处理，形成第五数据。 After the physical layer of the UE sends the fourth data, the physical layer of the secondary base station receives the fourth data from the UE, and the fourth data is sequentially processed by the MAC entity, the RLC entity, and the PDCP entity of the secondary base station, and the RLC of the primary base station. The processing of the entity and the PDCP entity forms the fifth data.

主基站和辅基站对数据包的处理与 UE 对数据包的处理互为逆过程，在此不再贅述。 The processing of the data packet by the primary base station and the secondary base station and the processing of the data packet by the UE are mutually reversed, and are not described herein again.

本发明实施例，通过在第一 RLC实体与 MAC实体之间设置第二 PDCP实体和第二 RLC实体，且第二 PDCP实体与辅基站的 PDCP实体逻辑对应，第二 RLC实体与辅基站的 RLC实体逻辑对应，改变现有技术中对待分流数据的处理流程，对底层测量到的空口情况变化反应较快，动态分流的效果较好。 In the embodiment of the present invention, the second PDCP entity and the second RLC entity are set between the first RLC entity and the MAC entity, and the PDCP entity of the second PDCP entity and the secondary base station Logically, the second RLC entity logically corresponds to the RLC entity of the secondary base station, and changes the processing flow of the data to be shunted in the prior art, and the response to the air interface condition measured by the bottom layer is faster, and the dynamic shunting effect is better.

本实施例还提供一种上行数据传输方法，如图 12所示，包括： The embodiment further provides an uplink data transmission method, as shown in FIG. 12, including:

501、 UE向主基站和 /或辅基站上报 BSR, 以使主基站和 /或辅基站为所述 UE分配上行传输资源。 501. The UE reports a BSR to the primary base station and/or the secondary base station, so that the primary base station and/or the secondary base station allocate uplink transmission resources to the UE.

502、 UE的第一 PDCP 实体接收来自应用层的数据，并对所述数据进行处理，形成第一数据。 502. The first PDCP entity of the UE receives data from the application layer, and processes the data to form the first data.

503、 UE的第一 RLC 实体给所述第一数据添加第一 RLC序号，形成第二数据，并将所述第二数据中待分流的分流数据发送至第二 PDCP实体。 503. The first RLC entity of the UE adds a first RLC sequence number to the first data, forms a second data, and sends the offload data to be offloaded in the second data to the second PDCP entity.

504、 UE的第二 PDCP 实体接收来所述分流数据，并将所述分流数据发送至 UE的第二 RLC实体。 504. The second PDCP entity of the UE receives the offloaded data, and sends the offloaded data to a second RLC entity of the UE.

505、 UE的第二 RLC实体根据接收到的辅基站分配的上行传输资源将接收到的所述分流数据分段级联后，添加第二 RLC 序号，形成第三数据。 505. The second RLC entity of the UE adds the second RLC sequence number to form a third data according to the received uplink data resources allocated by the secondary base station.

具体的， UE的第二 RLC实体将所述第三数据发送至 UE的 MAC 实体。 Specifically, the second RLC entity of the UE sends the third data to the MAC entity of the UE.

506、 UE将处理后的所述第三数据发送至所述辅基站。 506. The UE sends the processed third data to the secondary base station.

具体的， UE的 MAC实体对所述第三数据进行处理后，形成第四数据，并将所述第四数据发送至物理层，以使物理层将所述第四数据发送至辅基站。 Specifically, after processing, by the MAC entity of the UE, the third data, the fourth data is formed, and the fourth data is sent to the physical layer, so that the physical layer sends the fourth data to the secondary base station.

与第一种上行数据传输方法不同的是，本实施例中，在接收到辅基站分配的上行传输资源之前，数据就进入了第二 PDCP实体，因此， UE的第一 RLC实体就只对数据包做加序号的处理，而不对数据包进行分段级联，而对数据包进行分段级联的工作需要第二 RLC 实体来做。除此之外，本实施例的其它步骤同第一种上行数据传输方法，在此不再贅述。 Different from the first uplink data transmission method, in this embodiment, before receiving the uplink transmission resource allocated by the secondary base station, the data enters the second PDCP entity, and therefore, the first RLC entity of the UE only has data. The packet is processed by a sequence number without segmentation of the data packet, and the work of segmenting the data packet requires a second RLC entity. Otherwise, the other steps in this embodiment are the same as the first uplink data transmission method, and details are not described herein again.

进一步的， UE的物理层将第四数据发出后，辅基站的物理层接收来自 UE的第四数据，所述第四数据依次经过辅基站的 MAC实体、 RLC 实体和 PDCP实体的处理，以及主基站的 RLC实体和 PDCP实体的处理，形成第五数据。主基站和辅基站对数据包的处理与 UE对数据包的处理互为逆过程，在此也不再贅述。 Further, after the physical layer of the UE sends the fourth data, the physical layer of the secondary base station receives the fourth data from the UE, and the fourth data is sequentially processed by the MAC entity, the RLC entity, and the PDCP entity of the secondary base station, and the primary The processing of the RLC entity and the PDCP entity of the base station forms the fifth data. The processing of the data packet by the primary base station and the secondary base station is inverse to the processing of the data packet by the UE, and will not be described here.

在 UE的第一 RLC实体给所述第一数据添加第一 RLC序号之后，还包括： After the first RLC entity of the UE adds the first RLC sequence number to the first data, the method further includes:

UE将待分流的所述第一数据预先存储在第二 RLC实体的緩存中。当所述方法的数据分流类型为部分分流时，所述 UE向主基站和 / 或辅基站上报 BSR, 具体为： The UE pre-stores the first data to be offloaded in a cache of the second RLC entity. When the data offloading type of the method is a partial offload, the UE reports the BSR to the primary base station and/or the secondary base station, specifically:

在判断待传数据的总量小于或等于预先配置的 BSR门限后，只向辅基站上报 BSR; After determining that the total amount of the data to be transmitted is less than or equal to the pre-configured BSR threshold, the BSR is reported only to the secondary base station;

在判断待分流数据的总量大于预先配置的 BSR门限后，向辅基站上报 BSR, 向主基站上报待分流数据的总量与 BSR门限的差值。 After determining that the total amount of the data to be offloaded is greater than the pre-configured BSR threshold, the BSR is reported to the secondary base station, and the difference between the total amount of the offloaded data and the BSR threshold is reported to the primary base station.

当所述方法的数据分流类型为部分分流时， UE 只向主基站上报 When the data offload type of the method is partially offloaded, the UE reports only to the primary base station.

BSR。 BSR.

本发明实施例，通过在第一 RLC实体与 MAC实体之间设置第二 PDCP实体和第二 RLC实体，且第二 PDCP实体与辅基站的 PDCP实体逻辑对应，第二 RLC实体与辅基站的 RLC实体逻辑对应，改变现有技术中对待分流数据的处理流程，对底层测量到的空口情况变化反应较快，动态分流的效果较好。 In the embodiment of the present invention, the second PDCP entity and the second RLC entity are set between the first RLC entity and the MAC entity, and the second PDCP entity logically corresponds to the PDCP entity of the secondary base station, and the RLC of the second RLC entity and the secondary base station Corresponding to the physical logic, the processing flow of the shunt data in the prior art is changed, and the change of the air interface condition measured by the bottom layer is faster, and the dynamic shunting effect is better.

与上述数据分流配置方法的实施例相对应的，本实施例还提供一种基站，如图 13所示，包括发送机 131和接收机 132, 其中， Corresponding to the embodiment of the foregoing data offloading configuration method, the embodiment further provides a base station, as shown in FIG. 13, including a transmitter 131 and a receiver 132, where

发送机 131 , 用于：发送第一消息至辅基站，所述第一消息用于向所述辅基站请求进行数据分流，所述第一消息中包括无线承载 RB的标识和所述 RB的业务质量要求 Qos参数，以使所述辅基站确定待分流 RB并为所述待分流 RB设置配置参数；和 Transmitter 131 for: Sending a first message to the secondary base station, where the first message is used to request data splitting from the secondary base station, where the first message includes an identifier of the radio bearer RB and a service quality requirement Qos parameter of the RB, so that Determining, by the secondary base station, a RB to be offloaded and setting configuration parameters for the to-be-split RB; and

接收机 132, 用于接收来自所述辅基站的第二消息，所述第二消息中包括所述待分流 RB的配置参数； a receiver 132, configured to receive a second message from the secondary base station, where the second message includes configuration parameters of the to-be-split RB;

进一步的，所述第二消息中还包括：緩冲状态报告 BSR门限值，所述 BSR 门限值由所述辅基站分配并用于供所述 UE上报 BSR, 所述 BSR用于使所述主基站和 /或辅基站为所述 UE分配上行传输资源。 Further, the second message further includes: a buffer status report BSR threshold, where the BSR threshold is allocated by the secondary base station and used by the UE to report a BSR, where the BSR is used to enable the The primary base station and/or the secondary base station allocates uplink transmission resources to the UE.

进一步的，所述接收机 132还用于，当所述辅基站的緩存中的下行数据的数据量小于或等于所述辅基站设置的緩存门限时，接收所述辅基站的数据请求； Further, the receiver 132 is further configured to: when the data volume of the downlink data in the buffer of the secondary base station is less than or equal to a buffer threshold set by the secondary base station, receive a data request of the secondary base station;

所述发送机 131 还用于，根据所述辅基站周期性上报的所述辅基站的緩存情况，向所述辅基站发送数据。 The transmitter 131 is further configured to send data to the secondary base station according to a buffer condition of the secondary base station periodically reported by the secondary base station.

进一步的，所述第一消息中还包括：分流类型标识，用于指示该数据分流为完全分流或者部分分流，其中， Further, the first message further includes: a traffic distribution type identifier, configured to indicate that the data traffic is completely offloaded or partially offloaded, where

所述部分分流是指一个 RB的数据部分经由所述辅基站传输，部分经由所述主基站传输，所述完全分流是指一个 RB的数据全部经由所述辅基站传输。 The partial offloading refers to that the data portion of one RB is transmitted via the secondary base station, and is partially transmitted via the primary base station, and the complete offloading refers to that all data of one RB is transmitted via the secondary base station.

本实施例还提供一种基站***，如图 14所示，包括主基站 2和辅基站 3 , 所述主基站包括 PDCP实体 21和 RLC实体 22, 所述辅基站包括 PDCP实体 31、 RLC实体 32其中， This embodiment further provides a base station system, as shown in FIG. 14, including a primary base station 2 and a secondary station. a base station 3, the primary base station includes a PDCP entity 21 and an RLC entity 22, and the secondary base station includes a PDCP entity 31 and an RLC entity 32.

所述主基站 2的 PDCP实体 21用于接收来自服务网关 SGW的数据，并对所述数据进行处理，形成第一数据，其中，所述数据的传输方法为部分分流； The PDCP entity 21 of the primary base station 2 is configured to receive data from the serving gateway SGW, and process the data to form first data, where the data transmission method is partial offloading;

所述主基站 2的 RLC实体 22用于给所述第一数据添加第一 RLC 序号，形成第二数据，并将所述第二数据中待分流数据发送至所述辅基站的 PDCP实体； The RLC entity 22 of the primary base station 2 is configured to add a first RLC sequence number to the first data, form second data, and send the data to be offloaded in the second data to a PDCP entity of the secondary base station;

所述辅基站 3的 PDCP实体 31用于将所述待分流数据发送至所述辅基站 3的 RLC实体 32; The PDCP entity 31 of the secondary base station 3 is configured to send the to-be-split data to the RLC entity 32 of the secondary base station 3;

所述辅基站 3 用于处理所述待分流数据，并将所述处理后的待分流数据发送至 UE。 The secondary base station 3 is configured to process the to-be-divided data, and send the processed to-be-split data to the UE.

进一步的，所述主基站 2的 RLC实体 22还用于，对所述第一数据进行分段级联处理，并给分段级联后的所述第一数据添加第一 RLC 序号。 Further, the RLC entity 22 of the primary base station 2 is further configured to perform segmentation concatenation processing on the first data, and add a first RLC sequence number to the first data after the segmentation cascade.

本实施例基站***中的主基站可执行上述方法实施例中主基站的动作，该基站***中的辅基站可执行上述方法实施例中辅基站的动作。 The primary base station in the base station system in this embodiment can perform the action of the primary base station in the foregoing method embodiment, and the secondary base station in the base station system can perform the action of the secondary base station in the foregoing method embodiment.

本实施例还提供一种基站***，如图 14所示，包括主基站 2和辅基站 3 , 所述主基站包括 PDCP实体 21和 RLC实体 22, 所述辅基站包括 PDCP实体 31、 RLC实体 32, The present embodiment further provides a base station system, as shown in FIG. 14, including a primary base station 2 and a secondary base station 3. The primary base station includes a PDCP entity 21 and an RLC entity 22, and the secondary base station includes a PDCP entity 31 and an RLC entity 32. ,

所述主基站 2的 PDCP实体 21用于接收来自服务网关 SGW的数据，并对所述数据进行处理，形成第一数据，其中，所述数据的传输方法为完全分流； The PDCP entity 21 of the primary base station 2 is configured to receive the number from the serving gateway SGW And processing the data to form the first data, where the data transmission method is completely offloaded;

所述主基站 2的 RLC实体 22用于接收所述第一数据，并将所述第一数据发送至辅基站 3的 PDCP实体 31 ; The RLC entity 22 of the primary base station 2 is configured to receive the first data, and send the first data to the PDCP entity 31 of the secondary base station 3;

所述辅基站 3的 PDCP实体 31用于接收来自所述主基站 2的所述第一数据，并将所述第一数据发送至辅基站 3的 RLC实体 32; The PDCP entity 31 of the secondary base station 3 is configured to receive the first data from the primary base station 2, and send the first data to the RLC entity 32 of the secondary base station 3;

所述辅基站 3 处理所述第一数据，并将所述处理后的第一数据发送至 UE。 The secondary base station 3 processes the first data, and sends the processed first data to the UE.

本实施例还提供一种用户终端，如图 15所示，包括第一 PDCP实体 41、第一 RLC实体 42、 MAC实体 43和物理层 44, 还包括： BSR 上报单元 40、第二 PDCP实体 45和第二 RLC实体 46, 所述第二 PDCP 实体 45和第二 RLC实体 46位于所述 UE的第一 RLC实体 42与 MAC 43 之间，其中， The present embodiment further provides a user terminal, as shown in FIG. 15, including a first PDCP entity 41, a first RLC entity 42, a MAC entity 43, and a physical layer 44, and further includes: a BSR reporting unit 40 and a second PDCP entity 45. And a second RLC entity 46, the second PDCP entity 45 and the second RLC entity 46 being located between the first RLC entity 42 and the MAC 43 of the UE, where

BSR上报单元 40 , 用于向主基站和 /或辅基站上报 BSR, 以使主基站和 /或辅基站为所述 UE分配上行传输资源； The BSR reporting unit 40 is configured to report the BSR to the primary base station and/or the secondary base station, so that the primary base station and/or the secondary base station allocate uplink transmission resources to the UE.

第一 PDCP实体 41 , 用于对所述数据进行第一处理，形成第一数据；第一 RLC实体 42 , 用于将所述第一数据进行分段级联，添加第一 RLC序号，形成第二数据，并根据接收到的辅基站分配的上行传输资源将所述第二数据中待分流的分流数据发送至第二 PDCP实体 45; a first PDCP entity 41, configured to perform first processing on the data to form first data; The first RLC entity 42 is configured to perform segmentation concatenation of the first data, add a first RLC sequence number, form second data, and send the second data according to the received uplink transmission resource allocated by the secondary base station. The offloaded data to be offloaded is sent to the second PDCP entity 45;

第二 PDCP实体，用于将所述分流数据发送至 UE的第二 RLC实体 46; a second PDCP entity, configured to send the offloaded data to a second RLC entity 46 of the UE;

第二 RLC 实体 46, 用于将接收到的所述分流数据添加第二 RLC 序号，形成第三数据，并将所述第三数据发送至所述 UE的 MAC实体 43 ; a second RLC entity 46, configured to add the second RLC sequence number to the received shunt data, form third data, and send the third data to the MAC entity 43 of the UE;

所述 UE的物理层 44 , 用于将处理后的第三数据发送至所述辅基站。 The physical layer 44 of the UE is configured to send the processed third data to the secondary base station.

进一步的，当数据分流方法为部分分流时，所述 BSR上报单元具体用于： Further, when the data offloading method is partially offloaded, the BSR reporting unit is specifically configured to:

在判断待传数据的总量小于或等于预先配置的 BSR门限后，向所述辅基站上报 BSR; 或 After determining that the total amount of data to be transmitted is less than or equal to the pre-configured BSR threshold, reporting the BSR to the secondary base station; or

在判断待分流数据的总量大于预先配置的 BSR门限后，向所述辅基站上报 BSR, 并向所述主基站上报待分流数据的总量与 BSR 门限的差值。 After determining that the total amount of the data to be offloaded is greater than the pre-configured BSR threshold, the BSR is reported to the secondary base station, and the difference between the total amount of the offloaded data and the BSR threshold is reported to the primary base station.

本实施例基站***中的 UE可执行上述方法实施例中 UE的动作。本发明实施例的用户终端，通过在第一 RLC实体与 MAC实体之间设置第二 PDCP实体和第二 RLC实体，且第二 PDCP实体与辅基站的 PDCP实体逻辑对应，第二 RLC实体与辅基站的 RLC实体逻辑对应，改变现有技术中对待分流数据的处理流程，对底层测量到的空口情况变化反应较快，动态分流的效果较好。 The UE in the base station system in this embodiment may perform the action of the UE in the foregoing method embodiment. The user terminal in the embodiment of the present invention, by setting a second PDCP entity and a second RLC entity between the first RLC entity and the MAC entity, and the second PDCP entity logically corresponds to the PDCP entity of the secondary base station, and the second RLC entity and the secondary The RLC entity of the base station logically corresponds to change the processing flow of the data to be shunted in the prior art, and the response to the air interface condition measured by the bottom layer is faster, and the dynamic shunting effect is better.

本实施例还提供一种用户终端，如图 15所示，包括第一 PDCP实体 41、第一 RLC实体 42、 MAC实体 43和物理层 44, 还包括： BSR 上报单元 40、第二 PDCP实体 45和第二 RLC实体 46, 所述第二 PDCP 实体 45和第二 RLC实体 46位于所述 UE的第一 RLC实体 42与 MAC43 之间， The present embodiment further provides a user terminal, as shown in FIG. 15, including a first PDCP entity 41, a first RLC entity 42, a MAC entity 43, and a physical layer 44, and further includes: a BSR reporting unit 40 and a second PDCP entity 45. And a second RLC entity 46, the second PDCP The entity 45 and the second RLC entity 46 are located between the first RLC entity 42 and the MAC 43 of the UE,

BSR上报单元 40 , 用于向主基站和 /或辅基站上报 BSR, 以使主基站和 /或辅基站为所述 U E分配上行传输资源； The BSR reporting unit 40 is configured to report the BSR to the primary base station and/or the secondary base station, so that the primary base station and/or the secondary base station allocate uplink transmission resources for the U E;

第一 PDCP实体 41 , 用于对所述数据进行第一处理，形成第一数据； a first PDCP entity 41, configured to perform first processing on the data to form first data;

第一 RLC实体 42, 用于给所述第一数据添加第一 RLC序号，形成第二数据，并将所述第二数据中待分流的分流数据发送至所述 UE的第二 PDCP实体 45; The first RLC entity 42 is configured to add a first RLC sequence number to the first data, form second data, and send the offloaded data to be offloaded in the second data to the second PDCP entity 45 of the UE;

第二 PDCP实体 45 , 用于将所述分流数据发送至 UE的第二 RLC 实体 46; a second PDCP entity 45, configured to send the offloaded data to a second RLC entity 46 of the UE;

第二 RLC实体 46 ,用于根据接收到的辅基站分配的上行传输资源将接收到的所述分流数据分段级联后，添加第二 RLC 序号，形成第三数据，将所述第三数据发送至 MAC实体 43 ; The second RLC entity 46 is configured to add the second RLC sequence number to form the third data according to the received uplink transmission resource allocated by the secondary base station, and then add the second RLC sequence to form the third data. Sent to the MAC entity 43;

物理层 44用于将处理后的第三数据发送至所述辅基站。 The physical layer 44 is configured to send the processed third data to the secondary base station.

在判断待传数据的总量小于或等于预先配置的 BSR门限后，向所述辅基站上报 BSR; After determining that the total amount of the data to be transmitted is less than or equal to the pre-configured BSR threshold, reporting the BSR to the secondary base station;

在判断待分流数据的总量大于预先配置的 BSR门限后，向所述辅基站上报 BSR, 和向所述主基站上报待分流数据的总量与 BSR 门限的差值。 After determining that the total amount of the data to be offloaded is greater than the pre-configured BSR threshold, the BSR is reported to the secondary base station, and the difference between the total amount of the offloaded data and the BSR threshold is reported to the primary base station.

本实施例基站***中的 UE可执行上述方法实施例中 UE的动作。本发明实施例的用户终端，通过在第一 RLC实体与 MAC实体之间设置第二 PDCP实体和第二 RLC实体，且第二 PDCP实体与辅基站的 PDCP实体逻辑对应，第二 RLC实体与辅基站的 RLC实体逻辑对应，改变现有技术中对待分流数据的处理流程，对底层测量到的空口情况变化反应较快，动态分流的效果较好。 The UE in the base station system in this embodiment may perform the action of the UE in the foregoing method embodiment. The user terminal in the embodiment of the present invention, by setting a second PDCP entity and a second RLC entity between the first RLC entity and the MAC entity, and the second PDCP entity logically corresponds to the PDCP entity of the secondary base station, and the second RLC entity and the secondary The RLC entity of the base station logically corresponds, The process of treating the shunt data in the prior art is changed, and the change of the air interface condition measured by the bottom layer is faster, and the dynamic shunting effect is better.

本实施例中各实体单元的工作原理和工作过程同上述方法实施例，在此不再赘述。 The working principles and working processes of the physical units in this embodiment are the same as those in the foregoing method embodiments, and are not described herein again.

所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，仅以上述各功能模块的划分进行举例说明，实际应用中，可以根据需要而将上述功能分配由不同的功能模块完成，即将装置的内部结构划分成不同的功能模块，以完成以上描述的全部或者部分功能。上述描述的***，装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再贅述。 It will be apparent to those skilled in the art that, for convenience and brevity of description, only the division of each functional module described above is exemplified. In practical applications, the above-mentioned function assignment can be completed by different functional modules as needed. The internal structure of the device is divided into different functional modules to perform all or part of the functions described above. For the specific working process of the system, the device and the unit described above, reference may be made to the corresponding process in the foregoing method embodiments, and details are not described herein again.

在本申请所提供的几个实施例中，应该理解到，所揭露的***，装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述模块或单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个***，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。 In the several embodiments provided herein, it should be understood that the disclosed systems, devices, and methods may be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the modules or units is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be used. Combined or can be integrated into another system, or some features can be ignored, or not executed. Alternatively, the coupling or direct coupling or communication connection between the various components shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical, mechanical or otherwise.

所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。 The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solution of the embodiment.

另外，在本发明各个实施例中的各功能单元可以集成在一个处理单元中 , 也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。 In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software function unit.

所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备（可以是个人计算机，服务器，或者网络设备等）或处理器（processor )执行本发明各个实施例所述方法的全部或部分步骤。而前述的存储介质包括： U盘、移动硬盘、只读存储器（ROM, Read-Only Memory ), 随机存取存储器（RAM, Random Access Memory )、磁碟或者光盘等各种可以存储程序代码的介质。 The integrated unit, if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium. Based on this understanding, Ben The technical solution of the invention, or all or part of the technical solution, may be embodied in the form of a software product stored in a storage medium, including a plurality of instructions. A computer device (which may be a personal computer, a server, or a network device, etc.) or a processor is implemented to perform all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: a U disk, a removable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like, which can store program codes. .

以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以所述权利要求的保护范围为准。 The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the appended claims.

Claims

权利要求书 Claim

1、一种数据分流配置方法，其特征在于，包括： A data distribution configuration method, comprising:

主基站发送第一消息至辅基站，所述第一消息用于向所述辅基站请求进行数据分流，所述第一消息中包括无线承载 RB的标识和所述 RB的业务质量要求 Qos参数，以使所述辅基站确定待分流 RB并为所述待分流 RB设置配置参数； The primary base station sends a first message to the secondary base station, where the first message is used to request data splitting from the secondary base station, where the first message includes an identifier of the radio bearer RB and a Qos parameter of the service quality requirement of the RB. So that the secondary base station determines the to-be-split RB and sets configuration parameters for the to-be-split RB;

所述主基站接收来自所述辅基站的第二消息，所述第二消息中包括所述待分流 RB的配置参数； The primary base station receives a second message from the secondary base station, where the second message includes configuration parameters of the to-be-split RB;

所述主基站发送第三消息至用户终端 UE, 所述第三消息中包括所述待分流 RB的标识和所述待分流 RB的配置参数，以使所述 UE为所述待分流 RB建立第二分组数据汇聚协议 PDCP实体和第二无线链路控制 RLC 实体并进行数据分流配置； The primary base station sends a third message to the user terminal UE, where the third message includes the identifier of the to-be-offered RB and the configuration parameter of the to-be-offered RB, so that the UE establishes the The two packet data convergence protocol PDCP entity and the second radio link control the RLC entity and perform data offload configuration;

其中，所述 UE具有第一 PDCP实体，第一 RLC实体和媒介存取控制 MAC实体，所述第二 PDCP实体和第二 RLC实***于所述第一 RLC 实体与所述 MAC实体之间。 The UE has a first PDCP entity, a first RLC entity, and a medium access control MAC entity, where the second PDCP entity and the second RLC entity are located between the first RLC entity and the MAC entity.

2、根据权利要求 1 所述的数据分流配置方法，其特征在于，所述 UE的第二 PDCP实体与所述辅基站的 PDCP实体对应，所述 UE的第二 RLC实体与所述辅基站的 RLC实体对应。 The data offloading configuration method according to claim 1, wherein the second PDCP entity of the UE corresponds to a PDCP entity of the secondary base station, and the second RLC entity of the UE and the secondary base station The RLC entity corresponds.

3、根据权利要求 1或 2所述的数据分流配置方法，其特征在于，所述第二消息和 /或第三消息中还包括：緩冲状态报告 B SR门限值，所述 B SR 门限值由所述辅基站分配并用于所述 UE上^艮 BSR,所述 BSR用于所述主基站和 /或辅基站为所述 U E分配上行传输资源。 The data offloading configuration method according to claim 1 or 2, wherein the second message and/or the third message further includes: a buffer status report B SR threshold, the B SR gate The limit value is allocated by the secondary base station and used for the UE, and the BSR is used by the primary base station and/or the secondary base station to allocate uplink transmission resources to the UE.

4、根据权利要求 1至 3任一项所述的数据分流配置方法，其特征在于，所述主基站发送第一消息至辅基站后，还包括： The data offloading configuration method according to any one of claims 1 to 3, wherein after the primary base station sends the first message to the secondary base station, the method further includes:

当所述辅基站的緩存中的下行数据的数据量小于或等于所述辅基站设置的緩存门限时，所述主基站接收所述辅基站的数据请求；或，所述主基站根据所述辅基站周期性上报的所述辅基站的緩存情况，向所述辅基站发送数据。 When the data amount of the downlink data in the buffer of the secondary base station is less than or equal to the secondary base station When the buffer threshold is set, the primary base station receives the data request of the secondary base station; or the primary base station sends data to the secondary base station according to the buffering situation of the secondary base station periodically reported by the secondary base station.

5、根据权利要求 1至 4任一项所述的数据分流配置方法，其特征在于，所述第二消息中还包括：所述 UE的前序编码 preamble; The data offloading configuration method according to any one of claims 1 to 4, wherein the second message further comprises: a preamble encoding preamble of the UE;

当所述辅基站确定所述 UE未与所述辅基站建立连接和 /或同步连接时，所述 preamble 由所述辅基站分配，用于所述 UE根据所述 reamble 向所述辅基站发起随机接入。 When the secondary base station determines that the UE does not establish a connection and/or a synchronous connection with the secondary base station, the preamble is allocated by the secondary base station, and is used by the UE to initiate randomization to the secondary base station according to the reamble. Access.

6、根据权利要求 5所述的数据分流配置方法，其特征在于，所述第三消息中还包括所述 reamble„ The data offloading configuration method according to claim 5, wherein the third message further includes the reamble „

7、根据权利要求 1至 6任一项所述的数据分流配置方法，其特征在于，所述第一消息和 /或所述第三消息中还包括：分流类型标识，用于指示该数据分流为完全分流或者部分分流； The data offloading configuration method according to any one of claims 1 to 6, wherein the first message and/or the third message further includes: a split type identifier, configured to indicate the data offloading For full or partial diversion;

其中，所述部分分流为一个 RB 的数据部分经由所述辅基站传输，部分经由所述主基站传输； The data part that is partially offloaded into one RB is transmitted via the secondary base station, and is partially transmitted via the primary base station;

所述完全分流为一个 RB的数据全部经由所述辅基站传输。 The data completely shunted into one RB is all transmitted via the secondary base station.

8、根据权利要求 1至 7任一项所述的数据分流配置方法，其特征在于，还包括： The data offloading configuration method according to any one of claims 1 to 7, further comprising:

所述主基站接收来自所述辅基站的数据分流配置修改请求消息，所述数据分流配置修改请求消息中包括待修改的 RB 配置参数和待修改的 BSR门限；和 The primary base station receives a data offload configuration modification request message from the secondary base station, where the data offload configuration modification request message includes an RB configuration parameter to be modified and a BSR threshold to be modified;

所述主基站或所述辅基站向所述 UE 发送数据分流配置修改消息，所述数据分流配置修改消息中包括所述待修改的 RB配置参数和所述待修改的 BSR门限。 And the primary base station or the secondary base station sends a data offload configuration modification message to the UE, where the data offload configuration modification message includes the RB configuration parameter to be modified and the BSR threshold to be modified.

9、一种下行数据传输方法，以进行数据分流，其特征在于，包括：主基站的分组数据汇聚协议 PDCP实体接收来自服务网关 SGW的数据，并对所述数据进行处理，形成第一数据，其中，所述数据分流的类型为部分分流，所述部分分流是指一个无线承载 RB的数据部分经由辅基站传输，部分经由所述主基站传输； A downlink data transmission method for performing data offloading, comprising: a packet data convergence protocol of a primary base station, a PDCP entity receiving a number from a serving gateway SGW And processing the data to form a first data, where the type of the data offload is a partial offload, where the partial offload refers to that the data part of one radio bearer RB is transmitted via the secondary base station, and partially through the main Base station transmission;

所述主基站的无线链路控制 RLC实体给所述第一数据添加第一 RLC 序号，形成第二数据，并将所述第二数据中待分流数据发送至辅基站的 PDCP实体； The radio link control RLC entity of the primary base station adds a first RLC sequence number to the first data, forms second data, and sends the to-be-split data in the second data to the PDCP entity of the secondary base station;

所述辅基站的 PDCP实体将所述待分流数据发送至辅基站的 RLC实体； The PDCP entity of the secondary base station sends the to-be-split data to the RLC entity of the secondary base station;

所述辅基站处理所述待分流数据，并将所述处理后的待分流数据发送至用户终端 UE。 The secondary base station processes the data to be offloaded, and sends the processed data to be offloaded to the user terminal UE.

10、根据权利要求 9所述的下行数据传输方法，其特征在于，所述主基站的 RLC实体给所述第一数据添加第一 RLC序号，形成第二数据后，还包括： The downlink data transmission method according to claim 9, wherein the RLC entity of the primary base station adds a first RLC sequence number to the first data, and after forming the second data, the method further includes:

所述辅基站将所述第二数据预先存储在所述辅基站的 RLC实体的緩存中。 The secondary base station pre-stores the second data in a cache of an RLC entity of the secondary base station.

11、根据权利要求 9或 10所述的下行数据传输方法，其特征在于，所述主基站的 RLC实体给所述第一数据添加第一 RLC序号，具体为：所述主基站的 RLC实体对所述第一数据进行分段级联处理，并给分段级联后的所述第一数据添加第一 RLC序号。 The downlink data transmission method according to claim 9 or 10, wherein the RLC entity of the primary base station adds a first RLC sequence number to the first data, specifically: an RLC entity pair of the primary base station The first data is subjected to a segmentation concatenation process, and the first RLC sequence number is added to the first data after the segmentation concatenation.

12、根据权利要求 9至 11任一项所述的下行数据传输方法，其特征在于，还包括： The downlink data transmission method according to any one of claims 9 to 11, further comprising:

所述辅基站向所述 UE传送第四数据，所述第四数据依次经过 UE的媒介存取控制 MAC实体、第二 RLC实体、第二 PDCP实体、第一 RLC 实体和第一 PDCP实体的处理。 Transmitting, by the secondary base station, fourth data to the UE, where the fourth data is sequentially processed by a medium access control MAC entity, a second RLC entity, a second PDCP entity, a first RLC entity, and a first PDCP entity of the UE. .

13、一种下行数据传输方法，以进行数据分流，其特征在于，包括：主基站的分组数据汇聚协议 PDCP实体接收来自服务网关 SGW的数据，并对所述数据进行处理，形成第一数据，其中，所述数据分流的类型为完全分流，所述完全分流是指一个无线承载 RB的数据全部经由辅基站传输； A downlink data transmission method for performing data offloading, comprising: a packet data convergence protocol of a primary base station, a PDCP entity receiving a number from a serving gateway SGW The data is processed to form the first data, where the data split type is a full split, and the complete split refers to that all the data of the radio bearer RB is transmitted via the secondary base station;

所述主基站的无线链路控制 RLC实体接收所述第一数据，并将所述第一数据发送至辅基站的 PDCP实体； The radio link control RLC entity of the primary base station receives the first data, and sends the first data to a PDCP entity of the secondary base station;

所述辅基站的 PDCP 实体接收来自主基站的所述第一数据，并将所述第一数据发送至辅基站的 RLC实体； The PDCP entity of the secondary base station receives the first data from the primary base station, and sends the first data to an RLC entity of the secondary base station;

所述辅基站处理所述第一数据，并将处理后的所述第一数据发送至用户终端 UE。 The secondary base station processes the first data, and sends the processed first data to the user terminal UE.

14、根据权利要求 13所述的下行数据传输方法，其特征在于，还包括： The downlink data transmission method according to claim 13, further comprising:

所述辅基站向所述 UE 传送第四数据，所述第四数据依次经过所述 UE的媒介存取控制 MAC实体、第二 RLC实体、第二 PDCP实体、第一 RLC实体和第一 PDCP实体的处理。 Transmitting, by the secondary base station, fourth data to the UE, where the fourth data sequentially passes through a medium access control MAC entity, a second RLC entity, a second PDCP entity, a first RLC entity, and a first PDCP entity of the UE. Processing.

15、一种上行数据传输方法，其特征在于，包括： 15. An uplink data transmission method, comprising:

用户终端 UE向主基站和 /或辅基站上报緩冲状态报告 BSR, 以使所述主基站和 /或辅基站为所述 UE分配上行传输资源； The user terminal UE reports a buffer status report BSR to the primary base station and/or the secondary base station, so that the primary base station and/or the secondary base station allocates uplink transmission resources to the UE;

所述 UE的第一分组数据汇聚协议 PDCP 实体对接收的数据进行处理，形成第一数据； The first packet data convergence protocol PDCP entity of the UE processes the received data to form first data;

所述 UE的第一无线链路控制 RLC实体将所述第一数据进行分段级联，添加第一 RLC序号，形成第二数据，并根据接收到的所述辅基站分配的上行传输资源将所述第二数据中待分流数据发送至第二 PDCP实体；所述 UE的第二 PDCP实体将所述分流数据发送至 UE的第二 RLC 实体； The first radio link control RLC entity of the UE performs segmentation concatenation of the first data, adds a first RLC sequence number, forms second data, and according to the received uplink transmission resource allocated by the secondary base station, Transmitting the data to be sent to the second PDCP entity in the second data; the second PDCP entity of the UE sends the offloaded data to the second RLC entity of the UE;

所述 UE的第二 RLC实体将接收到的所述待分流数据添加第二 RLC 序号，形成第三数据；所述 UE将处理后的第三数据发送至所述辅基站。 The second RLC entity of the UE adds the second RLC sequence number to the received data to be offloaded to form third data; The UE sends the processed third data to the secondary base station.

16、根据权利要求 15所述的上行数据传输方法，其特征在于，当所述方法的数据分流类型为部分分流时，所述 UE向主基站和 /或辅基站上报緩冲状态报告 BSR, 具体为： The uplink data transmission method according to claim 15, wherein when the data offload type of the method is partially offloaded, the UE reports a buffer status report BSR to the primary base station and/or the secondary base station, specifically For:

在判断待传数据的总量小于或等于预先配置的 BSR门限后，向所述辅基站上艮 BSR; 或 After determining that the total amount of data to be transmitted is less than or equal to the pre-configured BSR threshold, the BSR is sent to the secondary base station; or

在判断待分流数据的总量大于预先配置的 BSR门限后，向所述辅基站上报 BSR, 并向所述主基站上报待分流数据的总量与 BSR门限的差值。 After determining that the total amount of the data to be offloaded is greater than the pre-configured BSR threshold, the BSR is reported to the secondary base station, and the difference between the total amount of the offloaded data and the BSR threshold is reported to the primary base station.

17、一种上行数据传输方法，其特征在于，包括： 17. An uplink data transmission method, comprising:

所述 UE 的第一无线链路控制 RLC 实体给所述第一数据添加第一 RLC序号，形成第二数据，并将所述第二数据中待分流数据发送至 UE的第二 PDCP实体； The first radio link control RLC entity of the UE adds a first RLC sequence number to the first data, forms a second data, and sends the to-be-split data in the second data to a second PDCP entity of the UE;

所述 UE的第二 PDCP实体将所述待分流数据发送至 UE的第二 RLC 实体； Transmitting, by the second PDCP entity of the UE, the data to be offloaded to a second RLC entity of the UE;

所述 UE的第二 RLC实体根据接收到的所述辅基站分配的上行传输资源将接收到的所述分流数据分段级联后，添加第二 RLC序号，形成第三数据； And the second RLC entity of the UE adds the second RLC sequence number to form the third data according to the received uplink transmission resource allocated by the secondary base station, and then the second RLC sequence number is added;

18、根据权利要求 17 所述的上行数据传输方法，其特征在于，在 UE的第一 RLC实体给所述第一数据添加第一 RLC序号之后，还包括： The uplink data transmission method according to claim 17, wherein after the first RLC entity of the UE adds the first RLC sequence number to the first data, the method further includes:

UE将所述第一数据预先存储在第二 RLC实体的緩存中。 The UE pre-stores the first data in a buffer of the second RLC entity.

19、根据权利要求 17或 18所述的上行数据传输方法，其特征在于，当所述方法的数据分流类型为部分分流时，所述 UE向所述主基站和 /或辅基站上报 BSR, 具体为： The uplink data transmission method according to claim 17 or 18, characterized in that When the data offloading type of the method is a partial offload, the UE reports a BSR to the primary base station and/or the secondary base station, specifically:

在判断待分流数据的总量大于预先配置的 BSR门限后，向所述辅基站上报 BSR, 和向所述主基站上报待分流数据的总量与 BSR门限的差值。 After determining that the total amount of the data to be offloaded is greater than the pre-configured BSR threshold, the BSR is reported to the secondary base station, and the difference between the total amount of the offloaded data and the BSR threshold is reported to the primary base station.

20、一种基站，其特征在于，包括： 20. A base station, comprising:

发送机，用于： Transmitter for:

发送第一消息至辅基站，所述第一消息用于向所述辅基站请求进行数据分流，所述第一消息中包括无线承载 RB的标识和所述 RB的业务质量要求 Qos 参数，以使所述辅基站确定待分流 RB 并为所述待分流 RB设置配置参数；和 Sending a first message to the secondary base station, where the first message is used to request data splitting from the secondary base station, where the first message includes an identifier of the radio bearer RB and a service quality requirement Qos parameter of the RB, so that Determining, by the secondary base station, a RB to be offloaded and setting configuration parameters for the to-be-split RB; and

发送第三消息至用户终端 UE, 所述第三消息中包括所述待分流 RB的标识和所述待分流 RB的配置参数，以使所述 UE为所述待分流 RB 建立第二分组数据汇聚协议 PDCP 实体和第二无线链路控制 RLC 实体并进行数据分流配置； Sending a third message to the user terminal UE, where the third message includes the identifier of the to-be-offloaded RB and the configuration parameter of the to-be-offered RB, so that the UE establishes a second packet data convergence for the to-be-split RB. The protocol PDCP entity and the second radio link control the RLC entity and perform data offload configuration;

21、根据权利要求 20所述的基站，其特征在于，所述第二消息中还包括：緩冲状态报告 BSR门限值，所述 BSR门限值由所述辅基站分配并用于供所述 UE上报 BSR, 所述 BSR用于使所述主基站和 /或所述辅基站为所述 UE分配上行传输资源。 The base station according to claim 20, wherein the second message further includes: a buffer status report BSR threshold, where the BSR threshold is allocated by the secondary base station and used for the The UE reports the BSR, and the BSR is configured to enable the primary base station and/or the secondary base station to allocate uplink transmission resources to the UE.

22、根据权利要求 20或 21所述的基站，其特征在于，所述接收机还用于，当所述辅基站的緩存中的下行数据的数据量小于或等于所述辅基站设置的緩存门限时，接收所述辅基站的数据请求；所述发送机还用于，根据所述辅基站周期性上报的所述辅基站的緩存情况，向所述辅基站发送数据。 22. A base station according to claim 20 or 21, characterized in that The receiver is further configured to: when the data volume of the downlink data in the buffer of the secondary base station is less than or equal to a buffer threshold set by the secondary base station, receive a data request of the secondary base station; And transmitting data to the secondary base station according to the buffering situation of the secondary base station periodically reported by the secondary base station.

23、根据权利要求 20至 22任一项所述的基站，其特征在于，所述第一消息中还包括：分流类型标识，用于指示该数据分流为完全分流或者部分分流，其中， The base station according to any one of claims 20 to 22, wherein the first message further includes: a traffic distribution type identifier, configured to indicate that the data offload is completely offloaded or partially offloaded, where

所述部分分流是指一个 RB 的数据部分经由所述辅基站传输，部分经由所述主基站传输，所述完全分流是指一个 RB的数据全部经由所述辅基站传输。 The partial offloading means that the data part of one RB is transmitted via the secondary base station, and partly transmitted via the primary base station, and the complete offloading means that all data of one RB is transmitted via the secondary base station.

24、一种基站***，包括主基站和辅基站，所述主基站包括分组数据汇聚协议 PDCP实体和无线链路控制 RLC实体，所述辅基站包括 PDCP 实体和 RLC实体，其特征在于， A base station system, comprising a primary base station and a secondary base station, the primary base station comprising a packet data convergence protocol PDCP entity and a radio link control RLC entity, the secondary base station comprising a PDCP entity and an RLC entity, wherein

所述主基站的 PDCP实体用于接收来自服务网关 SGW的数据，并对所述数据进行处理，形成第一数据，其中，所述数据的传输方法为部分分流; The PDCP entity of the primary base station is configured to receive data from the serving gateway SGW, and process the data to form first data, where the data transmission method is partially offloaded;

所述主基站的 RLC 实体用于给所述第一数据添加第一 RLC序号，形成第二数据，并将所述第二数据中待分流数据发送至所述辅基站的 PDCP实体； The RLC entity of the primary base station is configured to add a first RLC sequence number to the first data, form second data, and send the data to be offloaded in the second data to a PDCP entity of the secondary base station;

所述辅基站处理所述待分流数据，并将所述处理后的待分流数据发送至 UE。 The secondary base station processes the data to be offloaded, and sends the processed data to be offloaded to the UE.

25、根据权利要求 24所述的基站***，其特征在于， 25. The base station system according to claim 24, wherein

所述主基站的 RLC实体还用于，对所述第一数据进行分段级联处理，并给分段级联后的所述第一数据添加第一 RLC序号。 The RLC entity of the primary base station is further configured to perform segmentation and concatenation processing on the first data, and add a first RLC sequence number to the first data in the segmentation cascade.

26、一种基站***，包括主基站和辅基站，所述主基站包括分组数据汇聚协议 PDCP实体和无线链路控制 RLC实体，所述辅基站包括 PDCP 实体和 RLC实体，其特征在于， A base station system, comprising a primary base station and a secondary base station, the primary base station comprising a packet data convergence protocol PDCP entity and a radio link control RLC entity, the secondary base station comprising a PDCP entity and an RLC entity, wherein

所述主基站的 PDCP实体用于接收来自服务网关 SGW的数据，并对所述数据进行处理，形成第一数据，其中，所述数据的传输方法的数据分流类型为完全分流； The PDCP entity of the primary base station is configured to receive data from the serving gateway SGW, and process the data to form first data, where the data splitting type of the data transmission method is completely offloaded;

所述辅基站的 PDCP实体用于接收来自所述主基站的所述第一数据，并将所述第一数据发送至辅基站的 RLC实体； The PDCP entity of the secondary base station is configured to receive the first data from the primary base station, and send the first data to an RLC entity of the secondary base station;

所述辅基站处理所述第一数据，并将所述处理后的第一数据发送至用户终端 UE。 The secondary base station processes the first data, and sends the processed first data to the user terminal UE.

27、根据权利要求 26所述的基站***，其特征在于： 27. The base station system according to claim 26, wherein:

28、一种用户终端，包括第一分组数据汇聚协议 PDCP 实体、第一无线链路控制 RLC实体、媒介存取控制 MAC实体和物理层，其特征在于，还包括： BSR上^艮单元、第二 PDCP 实体和第二 RLC 实体，所述第二 PDCP实体和第二 RLC实***于所述 UE的第一 RLC实体与所述 MAC之间， 28. A user terminal, comprising: a first packet data convergence protocol PDCP entity, a first radio link control RLC entity, a medium access control MAC entity, and a physical layer, further comprising: a BSR a second PDCP entity and a second RLC entity, where the second PDCP entity and the second RLC entity are located between the first RLC entity of the UE and the MAC,

所述第一 PDCP实体，用于对接收的数据进行处理，形成第一数据；所述第一 RLC实体，用于将所述第一数据进行分段级联，添加第一 The first PDCP entity is configured to process the received data to form the first data, where the first RLC entity is configured to perform segmentation concatenation of the first data, adding the first

RLC序号，形成第二数据，并根据接收到的所述辅基站分配的上行传输资源将所述第二数据中待分流数据发送至所述第二 PDCP实体； RLC sequence number, forming second data, and according to the received uplink transmission resource allocated by the secondary base station The source sends the to-be-split data in the second data to the second PDCP entity;

所述第二 PDCP 实体，用于将所述分流数据发送至所述 UE的第二 RLC实体； The second PDCP entity, configured to send the offloaded data to a second RLC entity of the UE;

所述第二 RLC实体，用于将接收到的所述待分流数据添加第二 RLC 序号，形成第三数据，并将所述第三数据发送至所述 UE的 MAC实体；所述 UE 的物理层，用于接收所述第三数据并将处理后的第三数据发送至所述辅基站。 The second RLC entity is configured to add the second RLC sequence number to the received data to be offloaded, form third data, and send the third data to a MAC entity of the UE; And a layer, configured to receive the third data and send the processed third data to the secondary base station.

29、根据权利要求 28所述的用户终端，其特征在于，当数据分流方法为部分分流时，所述 BSR上 ^艮单元具体用于： The user terminal according to claim 28, wherein when the data offloading method is partially offloaded, the BSR unit is specifically configured to:

30、一种用户终端，包括第一分组数据汇聚协议 PDCP 实体、第一无线链路控制 RLC实体、媒介存取控制 MAC实体和物理层，其特征在于，还包括： BSR上报单元、第二 PDCP实体和第二 RLC实体，所述第二 PDCP 实体和第二 RLC实***于所述 UE的第一 RLC实体与所述 MAC之间，所述 BSR上报单元，用于向主基站和 /或辅基站上报 BSR, 以使所述主基站和 /或辅基站为所述 U E分配上行传输资源； 30. A user terminal, including a first packet data convergence protocol PDCP entity, a first radio link control RLC entity, a medium access control MAC entity, and a physical layer, further comprising: a BSR reporting unit, and a second PDCP An entity and a second RLC entity, where the second PDCP entity and the second RLC entity are located between the first RLC entity of the UE and the MAC, and the BSR reporting unit is configured to send to the primary base station and/or the secondary base station Reporting the BSR, so that the primary base station and/or the secondary base station allocate uplink transmission resources to the UE;

所述第一 PDCP实体，用于对接收的数据进行处理，形成第一数据；所述第一 RLC 实体，用于给所述第一数据添加第一 RLC序号，形成第二数据 ,并将所述第二数据中待分流数据发送至所述 UE的第二 PDCP 实体； The first PDCP entity is configured to process the received data to form first data, where the first RLC entity is configured to add a first RLC sequence number to the first data, to form a second data, and Transmitting, to the second PDCP entity, the data to be offloaded to the UE in the second data;

所述第二 RLC实体，用于根据接收到的所述辅基站分配的上行传输资源将接收到的所述分流数据分段级联后，添加第二 RLC序号，形成第三数据，将所述第三数据发送至所述 UE的 MAC实体； The second RLC entity is configured to perform uplink transmission according to the received secondary base station After the resource segments the segmentation of the received data, the second RLC sequence number is added to form a third data, and the third data is sent to the MAC entity of the UE.

所述 UE的物理层用于将处理后的第三数据发送至所述辅基站。 The physical layer of the UE is configured to send the processed third data to the secondary base station.

31、根据权利要求 30所述的用户终端，其特征在于，当数据分流方法为部分分流时，所述 BSR上 ^艮单元具体用于： The user terminal according to claim 30, wherein when the data offloading method is partially offloaded, the unit on the BSR is specifically configured to: