WO2015100590A1 - Data transmission method and user equipment and enb - Google Patents

Data transmission method and user equipment and enb Download PDF

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Publication number
WO2015100590A1
WO2015100590A1 PCT/CN2013/091050 CN2013091050W WO2015100590A1 WO 2015100590 A1 WO2015100590 A1 WO 2015100590A1 CN 2013091050 W CN2013091050 W CN 2013091050W WO 2015100590 A1 WO2015100590 A1 WO 2015100590A1
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drb
bearer
eps
data stream
penb
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PCT/CN2013/091050
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French (fr)
Chinese (zh)
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黄敏
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华为技术有限公司
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Priority to PCT/CN2013/091050 priority Critical patent/WO2015100590A1/en
Publication of WO2015100590A1 publication Critical patent/WO2015100590A1/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W28/00Network traffic or resource management
    • H04W28/02Traffic management, e.g. flow control or congestion control
    • H04W28/08Load balancing or load distribution

Abstract

A data transmission method and user equipment (UE) and eNB, the data transmission method comprising: a UE receives secondary configuration information transmitted by a PeNB, the secondary configuration information comprising second DRB information allocated for the UE by an SeNB in an SCell, the SeNB managing the SCell, and the SCell being a secondary cell of the UE; the UE binds a first EPS-Bearer to a second DRB, the first EPS-Bearer being bound to a first DRB before being bound to the second DRB, the first DRB being a data radio bearer allocated for the UE by the PeNB in the PCell, the PeNB managing the PCell, and the PCell being a primary cell of the UE; the UE transmits data streams using the second DRB bound to the first EPS-Bearer.

Description

-种数据传输方法和用户设备以及基站  - Data transmission method and user equipment and base station
技术领域 Technical field
本发明实施例涉及通信领域,尤其涉及一种数据传输方法和用户设备以及 基站。 背景技术  The embodiments of the present invention relate to the field of communications, and in particular, to a data transmission method, a user equipment, and a base station. Background technique
载波聚合 ( Carrier Aggregation, CA )技术就是用户设备 ( User Equipment, UE ) 同时从不同的小区(Cell )收发数据, 异站点 CA ( Inter-eNB CA )指的是 用来做 CA的两个 Cell分属不同的演进型基站(evolved NodeB , eNB )。 异站点 CA技术能给用户带来更高的吞吐率, 提升用户体验, 同时也能提升网络资源 利用率。基于以上的诸多优点, 异站点 CA技术已经成为当前研究的一个热点。  Carrier Aggregation (CA) technology is a user equipment (UE) that simultaneously sends and receives data from different cells (Cell). The hetero-site CA (Inter-eNB CA) refers to two Cell points used for CA. It belongs to different evolved base stations (evolved NodeBs, eNBs). Different-site CA technology can bring higher throughput to users, improve user experience, and improve network resource utilization. Based on the above advantages, hetero-site CA technology has become a hot topic in current research.
对于异站点 CA技术, 通常在互联网协议(Internet Protocol, IP )层进行分 流, 在主基站 (Primary eNB , PeNB )与辅基站( Secondary eNB , SeNB ) 中 都有完整的 Ll、 L2协议栈, 也意味着在主基站和辅基站都分別需要建立各自 的数据无线承载(Data Radio Bearer, DRB )。 对于 IP层分流的异站点 CA而言, 在目前的载波聚合的实现方案 (例如第三代合作伙伴计划 (3rd Generation Partnership Project, 3GPP ) ) 中明确指定演进型分组网络承载和 DRB是——对 应的, 其中演进型分组网络承载的英文翻译为 Evolved Packet System-Bearer, 筒写为 EPS-Bearer, 另外也可称 EPS-Bearer为演进型分组系统承载。 对于异站 点 CA实现方案中建立的 EPS-Bearer ,如果其中一个 EPS-Bearer的上的数据流量 4艮大, 通过 EPS-Bearer和 DRB的对应关系, 流量艮大的数据流会流向数据流量 很大的 EPS-Bearer对应的 DRB指向的基站,从而会导致该 DRB指向的基站的负 载很重, 造成基站的拥塞。 发明内容  For the hetero-site CA technology, the traffic is usually split at the Internet Protocol (IP) layer, and the complete L1 and L2 protocol stacks are available in the primary eNB (PeNB) and the secondary eNB (SeNB). This means that each of the primary base station and the secondary base station needs to establish a respective Data Radio Bearer (DRB). For the hetero-site CA of the IP layer offload, the implementation of the current carrier aggregation scheme (for example, the 3rd Generation Partnership Project (3GPP)) explicitly specifies the evolved packet network bearer and the DRB is - corresponding The English translation of the evolved packet network bearer is Evolved Packet System-Bearer, and the cartridge is written as EPS-Bearer. In addition, EPS-Bearer can also be called as an evolved packet system bearer. For the EPS-Bearer established in the hetero-site CA implementation, if the data traffic on one of the EPS-Bearers is 4, the data flow with large traffic flows to the data traffic through the correspondence between the EPS-Bearer and the DRB. The EPS-Bearer corresponds to the base station to which the DRB points, so that the load of the base station pointed to by the DRB is heavy, causing congestion of the base station. Summary of the invention
本发明实施例提供了一种数据传输方法和用户设备,用于解决现有技术中 存在的基站负载超重导致的基站拥塞问题。  The embodiments of the present invention provide a data transmission method and a user equipment, which are used to solve the problem of base station congestion caused by overweight load of a base station existing in the prior art.
第一方面, 本发明实施例提供一种数据传输方法, 包括: 用户设备 UE接收主基站 PeNB发送的辅配置信息, 所述辅配置信息包括 辅基站 SeNB在辅小区 SCell中为所述 UE分配的第二数据无线承载 DRB的信 息, 所述 SeNB管理所述 SCell, 所述 SCell为所述 UE的辅小区; In a first aspect, an embodiment of the present invention provides a data transmission method, including: The user equipment UE receives the secondary configuration information sent by the primary base station PeNB, where the secondary configuration information includes information about the second data radio bearer DRB allocated by the secondary base station SeNB to the UE in the secondary cell SCell, where the SeNB manages the SCell, The SCell is a secondary cell of the UE;
所述 UE绑定第一演进型分组网络承载 EPS-Bearer和所述第二 DRB , 其 中, 所述第一 EPS-Bearer在与所述第二 DRB绑定之前与第一 DRB绑定, 所 述第一 DRB为所述 PeNB在主小区 PCell中为所述 UE分配的数据无线承载, 所述 PeNB管理所述 PCell, 所述 PCell为所述 UE的主小区;  The UE is bound to the first evolved packet network bearer EPS-Bearer and the second DRB, where the first EPS-Bearer is bound to the first DRB before being bound to the second DRB, The first DRB is a data radio bearer allocated by the PeNB to the UE in the primary cell PCell, the PeNB manages the PCell, and the PCell is a primary cell of the UE;
所述 UE使用与所述第一 EPS-Bearer绑定的第二 DRB传输数据流。  The UE transmits a data stream using a second DRB bound to the first EPS-Bearer.
结合第一方面, 在第一方面的第一种可能的实现方式中, 所述 UE绑定第 一 EPS-Bearer和所述第二 DRB之前, 还包括:  With reference to the first aspect, in a first possible implementation manner of the first aspect, before the UE binds the first EPS-Bearer and the second DRB, the method further includes:
所述 UE接收所述 PeNB发送的主配置信息, 所述主配置信息包括所述第 — DRB的信息;  Receiving, by the UE, primary configuration information sent by the PeNB, where the primary configuration information includes information of the first-DRB;
所述 UE绑定所述第一 EPS-Bearer与所述第一 DRB。  The UE binds the first EPS-Bearer to the first DRB.
结合第一方面或第一方面的第一种可能的实现方式,在第一方面的第二种 可能的实现方式中, 所述 UE接收 PeNB发送的辅配置信息, 包括:  With reference to the first aspect, or the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the receiving, by the UE, the secondary configuration information that is sent by the PeNB, includes:
所述 UE接收所述 PeNB发送的无线资源控制协议 RRC重配置消息, 所 述 RRC重配置消息携带有第二 DRB的无线承载标识 RB ID和第一 EPS-Bearer 的标识 ID, 所述 RRC重配置消息还携带全配置 Full Config参数, 所述 Full Config参数用于指示所述 UE绑定第一 EPS-Bearer和第二 DRB;  Receiving, by the UE, a radio resource control protocol RRC reconfiguration message sent by the PeNB, where the RRC reconfiguration message carries a radio bearer identifier RB ID of the second DRB and an identifier ID of the first EPS-Bearer, where the RRC reconfiguration The message also carries a fully configured Full Config parameter, where the Full Config parameter is used to indicate that the UE binds the first EPS-Bearer and the second DRB;
所述 UE绑定第一 EPS-Bearer和所述第二 DRB, 具体为:  Binding, by the UE, the first EPS-Bearer and the second DRB, specifically:
所述 UE在获取到所述 RRC重配置消息中 Full Config参数之后, 在非接 入 NAS层中建立所述第一 EPS-Bearer的 ID与所述第二 DRB的 RB ID之间的 映射关系。  After obtaining the Full Config parameter in the RRC reconfiguration message, the UE establishes a mapping relationship between the ID of the first EPS-Bearer and the RB ID of the second DRB in the non-access NAS layer.
结合第一方面或第一方面的第一种可能或第二种可能的实现方式,在第一 方面的第三种可能的实现方式中,所述 UE使用与所述第一 EPS-Bearer绑定的 第二 DRB传输数据流, 包括:  In combination with the first aspect or the first possible or the second possible implementation of the first aspect, in a third possible implementation manner of the first aspect, the UE is used to be bound to the first EPS-Bearer The second DRB transmits the data stream, including:
当所述 SeNB通过所述第二 DRB发送第一下行数据流时, 所述 UE通过 所述第二 DRB接收所述 SeNB发送的第一下行数据流;  When the SeNB sends the first downlink data stream by using the second DRB, the UE receives the first downlink data stream sent by the SeNB by using the second DRB;
所述方法还包括:  The method further includes:
在所述 UE通过所述第二 DRB接收所述 SeNB发送的第一下行数据流时, 若所述 PeNB通过第三 DRB发送第二下行数据流,所述 UE通过所述第三 DRB 接收所述 PeNB发送的第二下行数据流, 所述第三 DRB与第二 EPS-Bearer绑 定, 所述第三 DRB为所述 PeNB在 PCell中为所述 UE分配的数据无线承载; 其中, 所述第一下行数据流和所述第二下行数据流为统一控制节点 SRC 对从服务网关 SGW接收到的数据流进行分流得到, 或所述第一下行数据流和 所述第二下行数据流为所述 PeNB对从所述 SGW接收到的数据流进行分流得 到。 When the UE receives the first downlink data stream sent by the SeNB by using the second DRB, If the PeNB sends the second downlink data stream by using the third DRB, the UE receives the second downlink data stream sent by the PeNB by using the third DRB, and the third DRB is bound to the second EPS-Bearer. The third DRB is a data radio bearer allocated by the PeNB to the UE in the PCell, where the first downlink data stream and the second downlink data stream are a unified control node SRC to the slave service gateway SGW. The received data stream is obtained by offloading, or the first downlink data stream and the second downlink data stream are obtained by the PeNB to offload the data stream received from the SGW.
结合第一方面或第一方面的第一种可能或第二种可能的实现方式,在第一 方面的第四种可能的实现方式中,所述数据流为所述 UE需要发送的上行数据 流,所述 UE使用与所述第一 EPS-Bearer绑定的第二 DRB传输数据流, 包括: 所述 UE通过所述第一 EPS-Bearer确定与所述第一 EPS-Bearer绑定的第 二 DRB;  With reference to the first aspect or the first possible or the second possible implementation manner of the first aspect, in a fourth possible implementation manner of the first aspect, the data stream is an uplink data stream that the UE needs to send And the using, by the UE, the second DRB to transmit the data stream that is bound to the first EPS-Bearer, including: determining, by the first EPS-Bearer, the second binding with the first EPS-Bearer DRB;
所述 UE将需要发送的上行数据流通过所述第二 DRB发送给所述 SeNB, 由所述 SeNB将所述需要发送的上行数据流发送给 SRC或 SGW。  And sending, by the UE, the uplink data stream that needs to be sent to the SeNB by using the second DRB, and sending, by the SeNB, the uplink data stream that needs to be sent to the SRC or the SGW.
结合第一方面或第一方面的第一种可能或第二种可能或第三种可能或第 四种可能的实现方式,在第一方面的第五种可能的实现方式中,所述第二 DRB 由所述 SeNB在所述 SCell中为所述 UE建立,且所述第二 DRB的信息由所述 PeNB从所述 SeNB获取到并携带在所述辅配置信息中发送给所述 UE。  In combination with the first aspect or the first possible or the second possible or the third possible or the fourth possible implementation of the first aspect, in a fifth possible implementation manner of the first aspect, the second The DRB is established by the SeNB for the UE in the SCell, and the information of the second DRB is acquired by the PeNB from the SeNB and carried in the secondary configuration information and sent to the UE.
结合第一方面或第一方面的第一种可能或第二种可能或第三种可能或第 四种可能或第五种可能的实现方式, 在第一方面的第六种可能的实现方式中, 所述第一 EPS-Bearer为默认演进型分组网络承载 Default EPS-Bearer , 或专用 演进型分组网络承载 Dedicated EPS-Bearer。  In combination with the first aspect or the first possible or the second possible or the third possible or the fourth possible or the fifth possible possible implementation of the first aspect, in a sixth possible implementation of the first aspect The first EPS-Bearer is a default evolved packet network bearer Default EPS-Bearer, or the dedicated evolved packet network bearer Dedicated EPS-Bearer.
结合第一方面或第一方面的第一种可能或第二种可能或第三种可能或第 四种可能或第五种可能的实现方式, 在第一方面的第七种可能的实现方式中, 所述第一 EPS-Bearer为辅助演进型分组网络承载 Assisting EPS-Bearer;  In combination with the first aspect or the first possible or the second possible or the third possible or the fourth possible or the fifth possible possible implementation of the first aspect, in a seventh possible implementation of the first aspect The first EPS-Bearer is an Assisting Evolved Packet Network bearer Assisting EPS-Bearer;
所述 Assisting EPS-Bearer是由移动管理实体 MME触发建立,或者由核心 网中的 PGW触发建立, 或者由所述 UE触发建立的 EPS-Bearer。  The Assisting EPS-Bearer is triggered by the mobility management entity MME, or triggered by the PGW in the core network, or triggered by the UE to establish the EPS-Bearer.
第二方面, 本发明实施例提供一种数据传输方法, 包括:  In a second aspect, an embodiment of the present invention provides a data transmission method, including:
主基站 PeNB获取辅基站 SeNB在辅小区 SCell中为用户设备 UE分配的 第二数据无线承载 DRB的信息, 所述 SeNB管理所述 SCell, 所述 SCell为所 述 UE的辅小区; The primary base station PeNB acquires information of the second data radio bearer DRB allocated by the secondary base station SeNB for the user equipment UE in the secondary cell SCell, where the SeNB manages the SCell, and the SCell is a secondary cell of the UE;
所述 PeNB 向所述 UE发送辅配置信息, 所述辅配置信息包括所述第二 DRB的信息;  The PeNB sends the secondary configuration information to the UE, where the secondary configuration information includes information about the second DRB;
其中, 所述第二 DRB用于与第一演进型分组网络承载 EPS-Bearer绑定, 并用于所述 UE与所述 SeNB之间传输数据流。  The second DRB is configured to be bound to the first evolved packet network bearer EPS-Bearer, and used to transmit a data stream between the UE and the SeNB.
结合第二方面,在第二方面的第一种可能的实现方式中,所述主基站 PeNB 获取辅基站 SeNB在辅小区 SCell中为用户设备 UE分配的第二数据无线承载 DRB的信息之前, 还包括:  With reference to the second aspect, in a first possible implementation manner of the second aspect, the primary base station PeNB acquires information about the second data radio bearer DRB allocated by the secondary base station SeNB for the user equipment UE in the secondary cell SCell. Includes:
所述 PeNB在主小区 PCell中为所述 UE分配第一 DRB , 所述 PeNB管理 所述 PCell, 所述 PCell为所述 UE的主小区;  The PeNB allocates a first DRB to the UE in the primary cell PCell, the PeNB manages the PCell, and the PCell is a primary cell of the UE;
所述 PeNB向所述 UE发送所述主配置信息, 所述主配置信息包括: 所述 第一 DRB的信息;  The PeNB sends the primary configuration information to the UE, where the primary configuration information includes: information about the first DRB;
其中, 所述第一 DRB用于与所述第一 EPS-Bearer绑定, 并用于所述 UE 与所述 PeNB之间传输数据流。  The first DRB is configured to be bound to the first EPS-Bearer, and used to transmit a data stream between the UE and the PeNB.
结合第二方面或第二方面的第一种可能的实现方式,在第二方面的第二种 可能的实现方式中, 所述辅配置信息用于指示所述 UE 解除所述第一 EPS-Bearer与所述第一 DRB的绑定, 并绑定所述第一 EPS-Bearer与所述第二 DRB。  With reference to the second aspect or the first possible implementation manner of the second aspect, in a second possible implementation manner of the second aspect, the auxiliary configuration information is used to indicate that the UE cancels the first EPS-Bearer Binding with the first DRB, and binding the first EPS-Bearer and the second DRB.
结合第二方面,在第二方面的第三种可能的实现方式中,所述主基站 PeNB 获取辅基站 SeNB在辅小区 SCell中为用户设备 UE分配的第二数据无线承载 DRB的信息, 包括:  With reference to the second aspect, in a third possible implementation manner of the second aspect, the information about the second data radio bearer (DRB) allocated by the SeNB to the user equipment UE in the secondary cell SCell is obtained by the primary base station, and the information includes:
所述 PeNB接收所述 SeNB发送的所述第二 DRB的信息;  Receiving, by the PeNB, information about the second DRB sent by the SeNB;
或, 所述 PeNB接收统一控制节点 SRC发送的所述第二 DRB的信息, 所 述第二 DRB的信息由所述 SeNB发送给所述 SRC。  Or, the PeNB receives the information of the second DRB that is sent by the unified control node SRC, and the information of the second DRB is sent by the SeNB to the SRC.
结合第二方面或第二方面的第一种可能或第二种可能或第三种可能的实 现方式, 在第二方面的第四种可能的实现方式中, 所述第二 DRB的信息为所 述第二 DRB 的无线承载标识 RB ID; 所述辅配置信息为无线资源控制协议 RRC重配置消息;  With reference to the second aspect or the first possible or the second possible or the third possible implementation manner of the second aspect, in a fourth possible implementation manner of the second aspect, the information of the second DRB is a radio bearer identifier RB ID of the second DRB; the secondary configuration information is a radio resource control protocol RRC reconfiguration message;
所述 PeNB向所述 UE发送辅配置信息, 包括:  The sending, by the PeNB, the secondary configuration information to the UE includes:
所述 PeNB发送所述 RRC重配置消息,所述 RRC重配置消息携带有第二 DRB的 RB ID和第一 EPS-Bearer的标识 ID, 所述 RRC重配置消息还携带全 配置 Full Config 参数, 所述 Full Config 参数用于指示所述 UE 绑定第一 EPS-Bearer和第二 DRB。 Sending, by the PeNB, the RRC reconfiguration message, where the RRC reconfiguration message carries a second The RB ID of the DRB and the identifier ID of the first EPS-Bearer, the RRC reconfiguration message further carries a fully configured Full Config parameter, where the Full Config parameter is used to indicate that the UE binds the first EPS-Bearer and the second DRB .
结合第二方面或第二方面的第一种可能或第二种可能或第三种可能或第 四种可能的实现方式, 在第二方面的第五种可能的实现方式中, 所述 PeNB向 所述 UE发送辅配置信息之后, 还包括:  With reference to the second aspect or the first possible or the second possible or the third possible or the fourth possible implementation manner of the second aspect, in a fifth possible implementation manner of the second aspect, the PeNB is After the UE sends the secondary configuration information, the method further includes:
所述 PeNB接收所述 SGW发送的数据流;  Receiving, by the PeNB, a data stream sent by the SGW;
所述 PeNB将所述数据流分流为第一下行数据流和第二下行数据流; 所述 PeNB将所述第一下行数据流经由所述 SeNB发送给所述 UE,其中, 所述 SeNB与所述 UE之间传输所述第一下行数据流的承载为所述第二 DRB; 所述 PeNB通过第三 DRB向所述 UE发送所述第二下行数据流, 所述第 三 DRB为所述 PeNB在 PCell中为所述 UE分配的数据无线承载。  The PeNB offloads the data stream into a first downlink data stream and a second downlink data stream; the PeNB sends the first downlink data stream to the UE by using the SeNB, where the SeNB Transmitting the bearer of the first downlink data stream with the UE as the second DRB; the PeNB sending the second downlink data stream to the UE by using a third DRB, where the third DRB is The data radio bearer allocated by the PeNB to the UE in the PCell.
第三方面, 本发明实施例还提供一种用户设备, 包括: 第一单元、 第二单 元和第三单元, 其中,  In a third aspect, the embodiment of the present invention further provides a user equipment, including: a first unit, a second unit, and a third unit, where
第一单元用于接收主基站 PeNB发送的辅配置信息,所述辅配置信息包括 辅基站 SeNB在辅小区 SCell中为所述 UE分配的第二数据无线承载 DRB的信 息, 所述 SeNB管理所述 SCell, 所述 SCell为所述 UE的辅小区;  The first unit is configured to receive the secondary configuration information sent by the primary base station PeNB, where the secondary configuration information includes information about the second data radio bearer DRB allocated by the secondary base station SeNB to the UE in the secondary cell SCell, where the SeNB manages the SCell, the SCell is a secondary cell of the UE;
第二单元用于绑定第一演进型分组网络承载 EPS-Bearer 和所述第二 DRB, 其中, 所述第一 EPS-Bearer在与所述第二 DRB绑定之前与第一 DRB 绑定,所述第一 DRB为所述 PeNB在主小区 PCell中为所述 UE分配的数据无 线承载, 所述 PeNB管理所述 PCell, 所述 PCell为所述 UE的主小区;  The second unit is configured to bind the first evolved packet network bearer EPS-Bearer and the second DRB, where the first EPS-Bearer is bound to the first DRB before being bound to the second DRB, The first DRB is a data radio bearer allocated by the PeNB to the UE in the primary cell PCell, the PeNB manages the PCell, and the PCell is a primary cell of the UE;
第三单元用于使用与所述第一 EPS-Bearer绑定的第二 DRB传输数据流。 第四方面, 本发明实施例还提供一种基站, 所述基站为主基站 PeNB, 包 括: 第一单元和第二单元, 其中,  The third unit is configured to transmit the data stream using the second DRB bound to the first EPS-Bearer. In a fourth aspect, the embodiment of the present invention further provides a base station, where the base station is a primary base station PeNB, and includes: a first unit and a second unit, where
第一单元用于获取辅基站 SeNB在辅小区 SCell中为用户设备 UE分配的 第二数据无线承载 DRB的信息, 所述 SeNB管理所述 SCell, 所述 SCell为所 述 UE的辅小区;  The first unit is configured to acquire information about a second data radio bearer DRB allocated by the SeNB in the secondary cell SCell to the user equipment UE, where the SeNB manages the SCell, and the SCell is a secondary cell of the UE;
第二单元用于向所述 UE发送辅配置信息,所述辅配置信息包括所述第二 DRB的信息;  The second unit is configured to send the secondary configuration information to the UE, where the secondary configuration information includes information about the second DRB;
其中, 所述第二 DRB 用于所述 UE 绑定第一演进型分组网络承载 EPS-Bearer和所述第二 DRB , 以根据所述第二 DRB与所述 SeNB之间传输数 据流。 The second DRB is used by the UE to bind the first evolved packet network bearer. The EPS-Bearer and the second DRB are configured to transmit a data stream according to the second DRB and the SeNB.
本发明实施例中, 首先 UE接收到 PeNB发送的辅配置信息, 该辅配置信 息包括有 SeNB 在辅小区中为 UE 分配的第二 DRB , 然后 UE 绑定第一 EPS-Bearer和第二 DRB , 而第一 EPS-Bearer在与第二 DRB绑定之前与第一 DRB绑定,绑定第一 EPS-Bearer与第二 DRB之后, UE使用与第一 EPS-Bearer 绑定的第二 DRB传输数据流。 由于第二 DRB是 SeNB在 SCell中为 UE分配 的数据无线承载,第一 EPS-Bearer与第二 DRB进行了绑定,而第一 EPS-Bearer 在与第二 DRB绑定之前与第一 DRB绑定,故本发明实施例中,第一 EPS-Bearer 仍然与 DRB 之间建立——对应关系, 但是对应于不同的时间段, 第一 EPS-Bearer可以与不同的 DRB绑定, 例如 UE在接收到辅配置信息之前第一 EPS-Bearer和第一 DRB绑定, 但是接收到辅配置信息之后第一 EPS-Bearer和 第二 DRB绑定, 可见本发明实施例中在接收到辅配置信息之后 UE可以对第 一 EPS-Bearer进行重新绑定,从而可以将第一 EPS-Bearer和第一 DRB的绑定 改变为第一 EPS-Bearer和第二 DRB的绑定, 通过绑定关系的改变, 可以建立 第一 EPS-Bearer 和第二 DRB 之间的映射关系, 故 UE 可以使用与第一 EPS-Bearer绑定的第二 DRB来传输数据流, UE能够使用第二 DRB传输数据 流, 也就实现了 UE和 SeNB之间传输数据流, 由于 UE可以在不同的时间段 绑定第一 EPS-Bearer与不同的 DRB,故可以对使用哪个 DRB来传输数据流进 行灵活选择, 满足异站点间的负载均衡, 提高用户吞吐率和资源利用率。 附图说明  In the embodiment of the present invention, the UE first receives the secondary configuration information sent by the PeNB, where the secondary configuration information includes the second DRB allocated by the SeNB to the UE in the secondary cell, and then the UE binds the first EPS-Bearer and the second DRB. The first EPS-Bearer is bound to the first DRB before being bound to the second DRB. After binding the first EPS-Bearer and the second DRB, the UE transmits data by using the second DRB bound to the first EPS-Bearer. flow. The first EPS-Bearer is bound to the second DRB, and the first EPS-Bearer is bound to the first DRB before being bound to the second DRB, because the second DRB is the data radio bearer allocated by the SeNB to the UE in the SCell. Therefore, in the embodiment of the present invention, the first EPS-Bearer still establishes a corresponding relationship with the DRB, but corresponding to different time segments, the first EPS-Bearer may be bound to a different DRB, for example, the UE is receiving. The first EPS-Bearer is bound to the first DRB before the secondary configuration information, but after the secondary configuration information is received, the first EPS-Bearer is bound to the second DRB, and the UE is visible after receiving the secondary configuration information in the embodiment of the present invention. The first EPS-Bearer may be re-bound, so that the binding of the first EPS-Bearer and the first DRB may be changed to the binding of the first EPS-Bearer and the second DRB, and the binding relationship may be changed. Establishing a mapping relationship between the first EPS-Bearer and the second DRB, so that the UE can use the second DRB bound to the first EPS-Bearer to transmit the data stream, and the UE can use the second DRB to transmit the data stream, thereby implementing UE and SeNB The data stream is transmitted. Since the UE can bind the first EPS-Bearer and different DRBs in different time periods, it can flexibly select which DRB to use to transmit data streams, satisfy load balancing between different sites, and improve user throughput. Rate and resource utilization. DRAWINGS
图 1为本发明实施例提供的一种数据传输方法的流程方框示意图; 图 2本发明实施例提供的另一种数据传输方法的流程方框示意图; 图 3为本发明实施例提供的一种下行数据流的分流方法的示意图; 图 4为本发明实施例提供的另一种数据传输方法的流程方框示意图; 图 5为本发明实施例提供的数据传输方法中一个应用场景的示意图; 图 6为本发明实施例提供的一种 UE的组成结构示意图;  1 is a schematic block diagram of a data transmission method according to an embodiment of the present invention; FIG. 2 is a schematic block diagram of another data transmission method according to an embodiment of the present invention; FIG. 4 is a schematic block diagram of another data transmission method according to an embodiment of the present invention; FIG. 5 is a schematic diagram of an application scenario in a data transmission method according to an embodiment of the present invention; FIG. 6 is a schematic structural diagram of a component of a UE according to an embodiment of the present disclosure;
图 7-a为本发明实施例提供的一种 PeNB的组成结构示意图;  FIG. 7 is a schematic structural diagram of a PeNB according to an embodiment of the present disclosure;
图 7-b为本发明实施例提供的另一种 PeNB的组成结构示意图; 图 7-c为本发明实施例提供的另一种 PeNB的组成结构示意图; 图 8为本发明实施例提供的另一种 UE的组成结构示意图; FIG. 7 is a schematic structural diagram of another PeNB according to an embodiment of the present disclosure; FIG. 7 is a schematic structural diagram of another PeNB according to an embodiment of the present invention; FIG. 8 is a schematic structural diagram of another UE according to an embodiment of the present disclosure;
图 9为本发明实施例提供的另一种 PeNB的组成结构示意图。 具体实施方式  FIG. 9 is a schematic structural diagram of another PeNB according to an embodiment of the present disclosure. detailed description
本发明实施例提供了一种数据传输方法和用户设备,用于解决现有技术中 存在的基站负载超重导致的基站拥塞问题。  The embodiments of the present invention provide a data transmission method and a user equipment, which are used to solve the problem of base station congestion caused by overweight load of a base station existing in the prior art.
为使得本发明的发明目的、 特征、优点能够更加的明显和易懂, 下面将结 合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、 完整地描 述,显然,下面所描述的实施例仅仅是本发明一部分实施例,而非全部实施例。 基于本发明中的实施例, 本领域的技术人员所获得的所有其他实施例,都属于 本发明保护的范围。  In order to make the object, the features and the advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. The described embodiments are only a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention are within the scope of the present invention.
本发明的说明书和权利要求书及上述附图中的术语 "第一"、 "第二"等是 用于区別类似的对象, 而不必用于描述特定的顺序或先后次序。应该理解这样 使用的术语在适当情况下可以互换,这仅仅是描述本发明的实施例中对相同属 性的对象在描述时所采用的区分方式。 此外, 术语 "包括" 和 "具有" 以及他 们的任何变形, 意图在于覆盖不排他的包含, 以便包含一系列单元的过程、 方 法、 系统、 产品或设备不必限于那些单元, 而是可包括没有清楚地列出的或对 于这些过程、 方法、 产品或设备固有的其它单元。  The terms "first", "second" and the like in the specification and claims of the present invention and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a particular order or order. It is to be understood that the terms so used are interchangeable, as appropriate, and are merely illustrative of the manner in which the description of the embodiments of the present invention. In addition, the terms "comprises" and "comprising", and any variants thereof, are intended to cover a non-exclusive inclusion, so that a process, method, system, product, or device that comprises a series of units is not necessarily limited to those elements, but may include not clear Other units listed or inherent to these processes, methods, products or equipment.
以下分別进行详细说明。  The details are described below separately.
本发明数据传输方法的一个实施例, 该方法可应用于用户设备 ( User Equipment, UE ) 的载波聚合( Carrier Aggregation, CA ) 中, 该方法可包括: UE接收主基站 (Primary eNB, PeNB )发送的辅配置信息, 其中, 辅配置信 息包括辅基站(Secondary eNB, SeNB )在辅小区( Secondary Cell, SCell ) 中 为 UE分配的第二数据无线承载( Data Radio Bearer, DRB )的信息, SeNB管 理 SCell, SCell为 UE的辅小区; UE绑定第一演进型分组网络承载( Evolved Packet System-Bearer, EPS-Bearer )和第二 DRB, 其中, 第一 EPS-Bearer在与 第二 DRB绑定之前与第一 DRB绑定, 第一 DRB为 PeNB在主小区( Primary Cell, PCell ) 中为 UE分配的数据无线承载, PeNB管理 PCell, PCell为 UE 的主小区; UE使用与第一 EPS-Bearer绑定的第二 DRB传输数据流。 请参阅图 1所示, 本发明数据传输方法的另一个实施例, 可以包括: 101、 UE接收 PeNB发送的辅配置信息。 An embodiment of the data transmission method of the present invention is applicable to carrier aggregation (CA) of a user equipment (UE), where the method may include: receiving, by the UE, a primary base station (Primary eNB, PeNB) The secondary configuration information, where the secondary configuration information includes information of a second data radio bearer (DRB) allocated by the secondary eNB (Secondary eNB, SeNB) for the UE in the secondary cell (SCell), and the SeNB manages The SCell is a secondary cell of the UE; the UE is bound to the first Evolved Packet System-Bearer (EPS-Bearer) and the second DRB, where the first EPS-Bearer is bound to the second DRB. Binding with the first DRB, the first DRB is a data radio bearer allocated by the PeNB for the UE in the primary cell (PCell), the PeNB manages the PCell, and the PCell is the primary cell of the UE; the UE is tied to the first EPS-Bearer The determined second DRB transmits the data stream. Referring to FIG. 1, another embodiment of the data transmission method of the present invention may include: 101. A UE receives secondary configuration information sent by a PeNB.
其中, 辅配置信息包括 SeNB在 SCell中为 UE分配的第二 DRB的信息。 在本发明实施例中, UE附着在 PeNB的 PCell中, UE和 PeNB之间建立 有通信连接, 当无线接入(Radio Access Network, RAN ) 网络中为 UE增加 SCell时, SeNB在 SCell中为 UE分配一个 DRB, 在本发明实施例中为了区分 SeNB在 SCell中为 UE分配的 DRB与其它基站为 UE分配的 DRB, 此处将 SeNB为 UE分配的 DRB称之为 "第二数据无线承载", 该第二数据无线承载 的信息可以被 PeNB获取到, PeNB以辅配置信息的方式将第二数据无线承载 的信息发送给 UE。 在后续实施例中为便于描述, 也可以称之为 "第二 DRB"。 其中, SeNB在 SCell中为 UE分配的第二 DRB配置有一个无线承载身份标识 码( Radio Bearer Identity, RB ID ), 并配置第二 DRB的 LI、 L2协议栈的所有 参数, 其配置方法可参见现有技术, 此处不再赘述。  The secondary configuration information includes information about the second DRB allocated by the SeNB to the UE in the SCell. In the embodiment of the present invention, the UE is attached to the PCell of the PeNB, and a communication connection is established between the UE and the PeNB. When the SCell is added to the UE in the Radio Access Network (RAN) network, the SeNB is the UE in the SCell. In the embodiment of the present invention, in order to distinguish between the DRB allocated by the SeNB for the UE in the SCell and the DRB allocated by the other base station to the UE, the DRB allocated by the SeNB to the UE is referred to as a “second data radio bearer”. The information of the second data radio bearer may be acquired by the PeNB, and the PeNB sends the information of the second data radio bearer to the UE in the manner of the secondary configuration information. In the subsequent embodiments, for convenience of description, it may also be referred to as "second DRB". The SeNB allocates a radio bearer identity (RB ID) to the second DRB allocated to the UE in the SCell, and configures all the parameters of the LI and L2 protocol stacks of the second DRB. The prior art is not described here.
需要说明的是, 本发明实施例中 PeNB向 UE发送辅配置信息是用于指示 UE绑定 EPS-Bearer与 DRB, 至于与哪个 DRB绑定, PeNB通过发送的辅配 置信息向 UE说明,上述实施例中以 PeNB指示 UE将 EPS-Bearer与第二 DRB 为例, 若只存在有一个 EPS-Bearer时, PeNB向 UE发送的辅配置信息中可以 不携带指示 UE将第二 DRB与哪个 EPS-Bearer绑定, 当然 PeNB也可以通过 发送的辅配置信息指示 UE将哪个 EPS-Bearer与第二 DRB绑定。 另外, PeNB 向 UE发送辅配置信息的方式可以有多种, 例如可以由 PeNB通过给 UE下发 的无线资源控制协议(Radio Resource Control, RRC )重配置消息来发送, 在 RRC重配置消息中携带第二 DRB的所有配置参数以及 RB ID。 其中, RRC重 配置消息中还可以携带需要绑定哪个 EPS-Bearer , 具体的, 可以通过 EPS-Bearer的标识(Identity, ID ) 来表示。  It should be noted that, in the embodiment of the present invention, the PeNB sends the secondary configuration information to the UE, which is used to indicate that the UE is bound to the EPS-Bearer and the DRB, and the PD is bound to the DRB by using the secondary configuration information that is sent by the PeNB. In the example, the PeNB indicates that the UE sets the EPS-Bearer and the second DRB as an example. If only one EPS-Bearer exists, the secondary configuration information sent by the PeNB to the UE may not carry the EPS-Bearer indicating whether the UE will use the second DRB. Binding, of course, the PeNB may also indicate which EPS-Bearer is bound by the UE to the second DRB by using the sent secondary configuration information. In addition, the PeNB may send the secondary configuration information to the UE in multiple manners, for example, may be sent by the PeNB through a Radio Resource Control (RRC) reconfiguration message sent by the UE, and carried in the RRC reconfiguration message. All configuration parameters of the second DRB and the RB ID. The RRC reconfiguration message may also carry an EPS-Bearer to be bound. Specifically, the EPS-Bearer identifier (Identity, ID) may be used.
102、 UE绑定第一 EPS-Bearer和第二 DRB。  102. The UE binds the first EPS-Bearer and the second DRB.
其中, 上述第一 EPS-Bearer在与第二 DRB绑定之前与第一 DRB绑定, 并且第一 DRB为 PeNB在 PCell中为 UE分配的数据无线承载, PeNB管理 PCell, PCell为 UE的主小区。  The first EPS-Bearer is bound to the first DRB before being bound to the second DRB, and the first DRB is a data radio bearer allocated by the PeNB for the UE in the PCell, the PeNB manages the PCell, and the PCell is the primary cell of the UE. .
在本发明实施例中,当 PeNB确定为 UE增加 SCell并获取到 SeNB在 SCell 中为 UE分配的第二 DRB时, PeNB向 UE发送辅配置信息, UE可以获取到 SeNB 在 SCell 中为该 UE 分配的第二 DRB , 按照 PeNB 的指示将第一 EPS-Bearer和获取到的第二 DRB进行绑定, 若 PeNB发送的辅配置信息中还 携带有 EPS-Bearer ID,则需要绑定该 EPS-Bearer ID对应的 EPS-Bearer和第二 DRB , 本发明实施例中以需要重新绑定的是第一 EPS-Bearer为例进行说明。 而且根据 3GPP中的明确规定: EPS-Bearer和 DRB是——对应的, 本发明实 施例中在第一 EPS-Bearer与第二 DRB绑定之前,第一 EPS-Bearer与第一 DRB 是绑定的。 也就是说, 本发明实施例中, 步骤 102中为第一 EPS-Bearer进行 的是 "重新绑定", 或者称之为 "二次绑定", 本发明实施例中改变了第一 EPS-Bearer和第一 DRB之间的映射关系, 即解除了第一 EPS-Bearer和第一 DRB之间已有的绑定, 而是绑定第一 EPS-Bearer与第二 DRB, 即 UE建立了 第一 EPS-Bearer 与第二 DRB 之间的映射关系。 故本发明实施例中, 第一 EPS-Bearer仍然与 DRB之间建立——对应关系, 但是对应于不同的时间段, 第一 EPS-Bearer可以与不同的 DRB绑定, 例如 UE在接收到辅配置信息之前 第一 EPS-Bearer 和第一 DRB 绑定, 但是接收到辅配置信息之后第一 EPS-Bearer和第二 DRB绑定。 In the embodiment of the present invention, when the PeNB determines to add the SCell to the UE and acquires the second DRB allocated by the SeNB to the UE in the SCell, the PeNB sends the secondary configuration information to the UE, and the UE may obtain the The second DRB allocated by the SeNB to the UE in the SCell, and the first EPS-Bearer and the acquired second DRB are bound according to the indication of the PeNB, and the secondary configuration information sent by the PeNB further carries the EPS-Bearer ID. The EPS-Bearer and the second DRB corresponding to the EPS-Bearer ID need to be bound. In the embodiment of the present invention, the first EPS-Bearer that needs to be re-bound is taken as an example for description. In addition, in the embodiment of the present invention, the first EPS-Bearer is bound to the first DRB before the first EPS-Bearer is bound to the second DRB, according to the explicit provisions in the 3GPP: EPS-Bearer and DRB are corresponding. of. That is to say, in the embodiment of the present invention, the first EPS-Bearer performs "rebinding" in the step 102, or is called "secondary binding". In the embodiment of the present invention, the first EPS is changed. The mapping relationship between the Bearer and the first DRB, that is, the existing binding between the first EPS-Bearer and the first DRB is released, but the first EPS-Bearer and the second DRB are bound, that is, the UE establishes the first A mapping relationship between an EPS-Bearer and a second DRB. Therefore, in the embodiment of the present invention, the first EPS-Bearer still establishes a corresponding relationship with the DRB, but corresponding to different time segments, the first EPS-Bearer may be bound to different DRBs, for example, the UE receives the auxiliary The first EPS-Bearer is bound to the first DRB before the configuration information, but the first EPS-Bearer is bound to the second DRB after receiving the secondary configuration information.
按照现有技术(例如 3GPP ) 中明确规定 EPS-Bearer和 DRB是——对应 的, 并且 EPS-Bearer和 DRB之间有确定的且唯一的绑定关系, 当流量 4艮大的 数据流流向 DRB指向的基站时,会导致数据流量很大的 DRB对应的基站比较 拥塞,故现有技术无法对各个基站的数据流进行灵活分流管理, 无法实现异站 点间的负载均衡, 用户吞吐率较低。 而本发明实施例中, 假定在 PeNB向 UE 辅配置信息 (以辅配置信息包括 SeNB在 SCell中为 UE分配了 DRB2的信息 为例 )之前, 第一 EPS-Bearer已经与某一个 DRB (例如 DRB1 )绑定, 通过 步骤 102的描述可知, 本发明实施例中 UE可以改变上述第一 EPS-Bearer与 DRB1的绑定关系, 即 UE解除了第一 EPS-Bearer和 DRB1的绑定, 并且绑定 了第一 EPS-Bearer与 DRB2, 从而改变了第一 EPS-Bearer和 DRB1的映射关 系, 重新建立了第一 EPS-Bearer和 DRB2之间的映射关系, 则数据流就可以 按照新建立的映射关系转发数据,由此可以将原来通过 DRB1对应的基站传输 数据流改变为通过 DRB2对应的基站传输数据流,故可以提高数据流分流的灵 活性, 满足异站点之间的负载均衡, 提高了用户吞吐率和资源利用率。  According to the prior art (for example, 3GPP), the EPS-Bearer and the DRB are correspondingly-corresponding, and there is a certain and unique binding relationship between the EPS-Bearer and the DRB, and the traffic flow with a large traffic volume flows to the DRB. When the base station is pointed to, the base station corresponding to the DRB with large data traffic is relatively congested. Therefore, the prior art cannot perform flexible traffic distribution management for each base station, and load balancing between different sites cannot be achieved, and the user throughput rate is low. In the embodiment of the present invention, the first EPS-Bearer has been associated with a certain DRB (for example, DRB1), before the PeNB sends the secondary configuration information to the UE (the secondary configuration information includes the information that the SeNB allocates the DRB2 to the UE in the SCell). Binding, as described in step 102, in the embodiment of the present invention, the UE may change the binding relationship between the first EPS-Bearer and the DRB1, that is, the UE releases the binding of the first EPS-Bearer and the DRB1, and the binding is performed. The first EPS-Bearer and the DRB2 are changed, so that the mapping relationship between the first EPS-Bearer and the DRB1 is changed, and the mapping relationship between the first EPS-Bearer and the DRB2 is re-established, and the data flow can follow the newly established mapping relationship. Forwarding data, thereby changing the base station transmission data stream corresponding to the original DRB1 to the data stream transmitted by the base station corresponding to the DRB2, thereby improving the flexibility of data stream offloading, satisfying load balancing between different stations, and improving user throughput. Rate and resource utilization.
需要说明的是, 在本发明的一些实施例中, 步骤 102UE 绑定第一 EPS-Bearer和第二 DRB之前, 还可以包括如下步骤: It should be noted that, in some embodiments of the present invention, step 102 UE binds the first Before the EPS-Bearer and the second DRB, the following steps may also be included:
UE接收 PeNB发送的主配置信息, 其中, 主配置信息包括上述第一 DRB 的信息;  The UE receives the primary configuration information sent by the PeNB, where the primary configuration information includes the information of the first DRB;
UE绑定第一 EPS-Bearer与第一 DRB。  The UE binds the first EPS-Bearer to the first DRB.
其中, UE在接收到 PeNB发送的主配置消息之后, UE从主配置消息中提 取出第一 DRB的信息, 然后 UE绑定第一 EPS-Bearer与第一 DRB, 如此就实 现了第一 EPS-Bearer与第一 DRB的初始绑定。 可见, 若 PeNB在 PCell中为 UE分配了第一 DRB , 且 UE在第一 EPS-Bearer与第一 DRB之间建立了绑定 关系, 但是通过步骤 102 , UE可以解除第一 EPS-Bearer和第一 DRB的绑定, 并且绑定第一 EPS-Bearer和第二 DRB。 其中, 绑定第一 EPS-Bearer与第二 DRB是重新建立的绑定,因为 UE在第一 EPS-Bearer与在 PCell中为其分配的 第一 DRB之间建立了初始绑定,重新绑定将使得第一 EPS-Bearer和第二 DRB 之间建立绑定, 通过这样绑定关系的重新映射, 可以改变数据的流向, 提高了 数据流传输的选择灵活性, 满足异站点之间的负载均衡。 需要说明的是, 在本 发明实施例中, 步骤 102中 UE绑定第一 EPS-Bearer和第二 DRB, 若在执行 该步骤之前第一 EPS-Bearer与其它 DRB已经绑定, 则步骤 102的执行必然会 使得第一 EPS-Bearer和其它 DRB之间的绑定被解除, 因为按照目前 3GPP的 规定, EPS-Bearer和 DRB之间仍然是——对应的, 不同于现有技术的是, 本 发明实施例中单从各个时间段来看第一 EPS-Bearer和多个 DRB仍然是——对 应的。  After receiving the primary configuration message sent by the PeNB, the UE extracts the information of the first DRB from the primary configuration message, and then the UE binds the first EPS-Bearer and the first DRB, thus implementing the first EPS- The initial binding of Bearer to the first DRB. It can be seen that if the PeNB allocates the first DRB to the UE in the PCell, and the UE establishes a binding relationship between the first EPS-Bearer and the first DRB, but by step 102, the UE may release the first EPS-Bearer and the first Binding of a DRB, and binding the first EPS-Bearer and the second DRB. The binding of the first EPS-Bearer and the second DRB is a re-established binding, because the UE establishes an initial binding between the first EPS-Bearer and the first DRB allocated to it in the PCell, and rebinds The binding between the first EPS-Bearer and the second DRB is established, and the remapping of the binding relationship can change the flow of data, improve the flexibility of data stream transmission, and satisfy load balancing between different sites. . It should be noted that, in the embodiment of the present invention, the UE binds the first EPS-Bearer and the second DRB in step 102, and if the first EPS-Bearer is bound to other DRBs before performing the step, the step 102 is Execution will inevitably cause the binding between the first EPS-Bearer and other DRBs to be released, because according to the current 3GPP regulations, EPS-Bearer and DRB are still - corresponding, different from the prior art, this In the embodiment of the invention, the first EPS-Bearer and the plurality of DRBs are still corresponding to each time period.
在本发明实施例中为了区分多个演进型分组网络承载, 可以采取 "第一 EPS-Bearer" 和 "第二 EPS-Bearer" 的命名方式以区分这是两个不同的演进型 分组网络承载 (EPS-Bearer ), 在本发明实施例中为便于描述, 可以将第一演 进型分组网络承载" 筒称为 "第一 EPS-Bearer" , 将 "第二演进型分组网络承 载" 筒称为 "第二 EPS-Bearer"。 另外, 在本发明实施例中为了说明第一 EPS-Bearer在与第二 DRB重新绑定之前已经和某一个 DRB建立了映射关系, 将在步骤 102之前已经和第一 DRB绑定了的 DRB称之为 "第一 DRB" , 以区 別于 SeNB在 SCell中分配给 UE的第二 DRB。  In order to distinguish a plurality of evolved packet network bearers in the embodiment of the present invention, a naming manner of "first EPS-Bearer" and "second EPS-Bearer" may be adopted to distinguish that two different evolved packet network bearers ( EPS-Bearer), in the embodiment of the present invention, for convenience of description, the first evolved packet network bearer may be referred to as a "first EPS-Bearer", and a "second evolved packet network bearer" may be referred to as "a second evolved packet network bearer" cartridge. The second EPS-Bearer". In addition, in the embodiment of the present invention, in order to explain that the first EPS-Bearer has established a mapping relationship with a certain DRB before being re-bound with the second DRB, it will be the first and the first before step 102. The DRB bound by the DRB is called a "first DRB" to distinguish it from the second DRB allocated by the SeNB to the UE in the SCell.
在本发明的一些实施例中, UE绑定第一 EPS-Bearer和第二 DRB之前, 若已经建立有两个 EPS-Bearer, 例如分別为默认演进型分组网络承载( Default EPS-Bearer ) 和专用演进型分组网络承载 ( Dedicated EPS-Bearer ), 则第一 EPS-Bearer具体可以为 Default EPS-Bearer, 或 Dedicated EPS-Bearer。 若只建 立了一个 EPS-Bearer, 则需要再建立一个 EPS-Bearer, 例如, UE中只建立有 一个 EPS-Bearer,假设 UE中建立有的 EPS-Bearer为第二 EPS-Bearer, 并且第 二 EPS-Bearer与第三 DRB绑定, 第三 DRB为 PeNB在 PCell中为 UE分配的 数据无线承载,则 UE需要重新再建立一个 EPS-Bearer,重新建立的 EPS-Bearer 定义为本发明实施例中描述的第一 EPS-Bearer。 In some embodiments of the present invention, before the UE binds the first EPS-Bearer and the second DRB, if two EPS-Bearers have been established, for example, the default evolved packet network bearer (Default EPS-Bearer and Dedicated EPS-Bearer, the first EPS-Bearer can be Default EPS-Bearer, or Dedicated EPS-Bearer. If only one EPS-Bearer is created, an EPS-Bearer needs to be established. For example, only one EPS-Bearer is established in the UE, assuming that the EPS-Bearer established in the UE is the second EPS-Bearer, and the second EPS The Bearer is bound to the third DRB. The third DRB is the data radio bearer allocated by the PeNB to the UE in the PCell. The UE needs to re-establish an EPS-Bearer. The re-established EPS-Bearer is defined in the embodiment of the present invention. The first EPS-Bearer.
需要说明的是, 在本发明的一些实施例中, 第一 EPS-Bearer具体可以为 辅助演进型分组网络承载( Assisting EPS-Bearer )。  It should be noted that, in some embodiments of the present invention, the first EPS-Bearer may specifically be an Assisting EPS-Bearer.
进一步的, 在本发明的一些实施例中, Assisting EPS-Bearer的建立方式可 以有以下三种方式:  Further, in some embodiments of the present invention, the Assisting EPS-Bearer can be established in the following three ways:
Assisting EPS-Bearer是由移动管理实体 ( Mobility Management Entity, MME )触发建立, 或者由核心网中的 PGW触发建立, 或者由 UE触发建立的 EPS-Bearer„  Assisting EPS-Bearer is triggered by the Mobility Management Entity (MME), or triggered by the PGW in the core network, or triggered by the UE.
需要说明的是, 在本发明的一些实施例中, 步骤 102UE 绑定第一 It should be noted that, in some embodiments of the present invention, step 102 UE binds the first
EPS-Bearer与第二 DRB之前, 还可以包括: 当有业务数据需要传输时, 触发 建立第一 EPS-Bearer。 也就是说, 第一 EPS-Bearer可以在有业务数据传输时 由 UE触发建立一个 EPS-Bearer。 Before the EPS-Bearer and the second DRB, the method may further include: triggering establishment of the first EPS-Bearer when there is service data to be transmitted. That is to say, the first EPS-Bearer can be triggered by the UE to establish an EPS-Bearer when there is service data transmission.
需要说明的是, 本发明的一些实施例中, 步骤 101UE接收 PeNB发送的 辅配置信息, 具体包括:  It should be noted that, in some embodiments of the present invention, the step 101, the UE receives the secondary configuration information sent by the PeNB, and specifically includes:
UE接收 PeNB发送的 RRC重配置消息, 其中, RRC重配置消息携带有 第二 DRB的 RB ID和第一 EPS-Bearer的 ID , RRC重配置消息中还携带有全 配置( Full Config )参数, Full Config参数用于指示 UE绑定第一 EPS-Bearer 和第二 DRB, 具体的 PeNB可以将 Full Config参数的取值设置为真 ( True ), 则 UE接收到 RRC重配置消息之后, UE可以通过 Full Config参数的取值为 True获知需要将第一 EPS-Bearer和第二 DRB绑定。在这种情况下,步骤 102UE 绑定第一 EPS-Bearer和第二 DRB, 具体可以包括: UE在获取到 RRC重配置 消息中 Full Config参数之后, 在非接入( Non- Access Stratum, NAS )层中建 立第一 EPS-Bearer的 ID与第二 DRB的 RB ID之间的映射关系。  The UE receives the RRC reconfiguration message sent by the PeNB, where the RRC reconfiguration message carries the RB ID of the second DRB and the ID of the first EPS-Bearer, and the RRC reconfiguration message also carries the Full Config parameter, Full The Config parameter is used to indicate that the UE is bound to the first EPS-Bearer and the second DRB, and the specific PeNB may set the value of the Full Config parameter to true (True). After the UE receives the RRC reconfiguration message, the UE may pass the Full. The value of the Config parameter is True. It is known that the first EPS-Bearer and the second DRB need to be bound. In this case, the step 102, the UE binding the first EPS-Bearer and the second DRB, may include: after the UE obtains the Full Config parameter in the RRC reconfiguration message, the non-access stratum (NAS) A mapping relationship between the ID of the first EPS-Bearer and the RB ID of the second DRB is established in the layer.
其中, Full Config的取值为 True时表示 UE需要重新进行参数配置, 当 Full Config的取值为 False时表示修改部分参数配置。 通过使用 Full Config机 制, UE可以重新绑定第一 EPS-Bearer与第二 DRB , 以达到可以使用 SeNB分 担 PeNB中数据流的目的, 从而实现对数据流的动态调整。 If the value of Full Config is True, the UE needs to re-configure the parameters. When the value of Full Config is False, it means to modify some parameter configurations. By using the Full Config mechanism, the UE can re-bind the first EPS-Bearer and the second DRB to achieve the purpose of using the SeNB to share the data flow in the PeNB, thereby implementing dynamic adjustment of the data flow.
103、 UE使用与第一 EPS-Bearer绑定的第二 DRB传输数据流。  103. The UE transmits a data stream by using a second DRB that is bound to the first EPS-Bearer.
在本发明实施例中, 当 UE绑定第一 EPS-Bearer与第二 DRB之后, 就可 以使用该第二 DRB传输数据流了, 由于第二 DRB为 SeNB在 SCell中为 UE 分配的数据无线承载, 故步骤 103中 UE使用第二 DRB传输数据流也就意味 着可以使用 SeNB来传输数据流了, 这样就可以使 SeNB分担 PeNB中的数据 流量, 实现了对数据分流的灵活管理。  In the embodiment of the present invention, after the UE binds the first EPS-Bearer and the second DRB, the second DRB may be used to transmit the data stream, because the second DRB is a data radio bearer allocated by the SeNB for the UE in the SCell. Therefore, in the step 103, the UE uses the second DRB to transmit the data stream, which means that the SeNB can be used to transmit the data stream, so that the SeNB can share the data traffic in the PeNB, thereby implementing flexible management of data offloading.
需要说明的是, 在本发明的一些实施例中, 步骤 103UE 使用与第一 It should be noted that, in some embodiments of the present invention, step 103 UE is used with the first
EPS-Bearer绑定的第二 DRB传输数据流, 包括: The second DRB transmission data stream bound by the EPS-Bearer includes:
当 SeNB通过第二 DRB发送第一下行数据流时, UE通过第二 DRB接收 SeNB发送的第一下行数据流。  When the SeNB sends the first downlink data stream by using the second DRB, the UE receives the first downlink data stream sent by the SeNB by using the second DRB.
并且在 UE通过第二 DRB接收 SeNB发送的第一下行数据流时,若 PeNB 通过第三 DRB发送第二下行数据流, UE通过第三 DRB接收 PeNB发送的第 二下行数据流,第三 DRB与第二 EPS-Bearer绑定,第三 DRB为 PeNB在 PCell 中为 UE分配的数据无线承载;  And when the UE receives the first downlink data stream sent by the SeNB by using the second DRB, if the PeNB sends the second downlink data stream by using the third DRB, the UE receives the second downlink data stream sent by the PeNB by using the third DRB, and the third DRB. Binding with the second EPS-Bearer, the third DRB is a data radio bearer allocated by the PeNB for the UE in the PCell;
其中, 第一下行数据流和第二下行数据流为统一控制节点 (Single RAN Controller, SRC )对从服务网关 (Serving GateWay, SGW )接收到的数据流 进行分流得到, 或第一下行数据流和第二下行数据流为 PeNB对从 SGW接收 到的数据流进行分流得到。  The first downlink data stream and the second downlink data stream are obtained by using a single RAN controller (SRC) to offload the data stream received from the Serving GateWay (SGW), or the first downlink data. The stream and the second downlink data stream are obtained by the PeNB offloading the data stream received from the SGW.
在本发明的实施例中, UE 中建立有两个 EPS-Bearer , 分別为第一 EPS-Bearer和第二 EPS-Bearer, 其中第二 EPS-Bearer和第三 DRB绑定, 第一 EPS-Bearer和第二 DRB绑定。 第一下行数据流和第二下行数据流可以为 SRC 对从 SGW接收到的数据流进行分流得到, 即 SRC作为分流点, SRC用于从 SGW接收数据流, 分流接收到的数据流, 并分別向 PeNB和 SeNB发送接收 到的数据流被分流后的结果, 具体的, SGW发送数据流时, SRC从 SGW接 收到数据流并将分流为第一下行数据流和第二下行数据流,并将第一下行数据 流发送给 SeNB, 将第二下行数据流分流发送给 PeNB, 故 UE可以通过第二 DRB从 SeNB接收到第一下行数据流, 通过第三 DRB从 PeNB接收到第二下 行数据流。 另外, 第一下行数据流和第二下行数据流可以为 PeNB对从 SGW 接收到的数据流进行分流得到, 即 PeNB作为分流点, SGW发送数据流时, PeNB从 SGW接收到数据流并将分流为第一下行数据流和第二下行数据流, 并将第一下行数据流发送给 SeNB,故 UE可以通过第二 DRB从 SeNB接收到 第一下行数据流, 通过第三 DRB从 PeNB接收到第二下行数据流。 In the embodiment of the present invention, two EPS-Bearers are established in the UE, namely a first EPS-Bearer and a second EPS-Bearer, wherein the second EPS-Bearer is bound to the third DRB, and the first EPS-Bearer Bind to the second DRB. The first downlink data stream and the second downlink data stream may be obtained by the SRC to offload the data stream received from the SGW, that is, the SRC is used as a split point, and the SRC is configured to receive the data stream from the SGW, and offload the received data stream, and Sending, by the PeNB and the SeNB, the received data stream is separately distributed. Specifically, when the SGW sends the data stream, the SRC receives the data stream from the SGW and divides the traffic into the first downlink data stream and the second downlink data stream. And transmitting the first downlink data stream to the SeNB, and transmitting the second downlink data stream to the PeNB, so that the UE can receive the first downlink data stream from the SeNB through the second DRB, and receive the first downlink data stream from the PeNB by using the third DRB. Second Row data stream. In addition, the first downlink data stream and the second downlink data stream may be obtained by the PeNB to offload the data stream received from the SGW, that is, the PeNB is used as a split point, and when the SGW sends the data stream, the PeNB receives the data stream from the SGW and The first downlink data stream and the second downlink data stream are offloaded, and the first downlink data stream is sent to the SeNB, so the UE can receive the first downlink data stream from the SeNB through the second DRB, and pass the third DRB from the third DRB. The PeNB receives the second downlink data stream.
举例说明如下: UE绑定第一 EPS-Bearer和第二 DRB之后, 对于整个系 统的下行数据流来说, 以 SRC作为分流点为例进行说明, 如果分流点(SRC ) 从 SGW收到数据流, 则分流点可以将从 SGW接收到的数据流分流为第一下 行数据流和第二下行数据流, 然后 SRC将第一下行数据流分发给 SeNB,将第 二下行数据流分发给 PeNB, 由于第二 EPS-Bearer与第三 DRB绑定, 故 UE 可以通过第三 DRB接收到第二下行数据流;由于第一 EPS-Bearer与第二 DRB 绑定, 故 UE可以通过第二 DRB接收到第一下行数据流。  An example is as follows: After the UE binds the first EPS-Bearer and the second DRB, for the downlink data flow of the entire system, the SRC is taken as a split point as an example, if the split point (SRC) receives the data flow from the SGW. The splitting point may divide the data stream received from the SGW into the first downlink data stream and the second downlink data stream, and then the SRC distributes the first downlink data stream to the SeNB, and distributes the second downlink data stream to the PeNB. The second EPS-Bearer is bound to the third DRB, so the UE can receive the second downlink data stream by using the third DRB. Because the first EPS-Bearer is bound to the second DRB, the UE can receive the second DRB. To the first downstream data stream.
需要说明的是, 在本发明的一些实施例中, 步骤 103 中描述的数据流为 UE需要发送的上行数据流, 步骤 103UE使用与第一 EPS-Bearer绑定的第二 DRB传输数据流, 具体可以包括:  It should be noted that, in some embodiments of the present invention, the data flow described in step 103 is an uplink data flow that the UE needs to send, and the step 103 uses the second DRB that is bound to the first EPS-Bearer to transmit the data flow. Can include:
UE通过第一 EPS-Bearer确定与第一 EPS-Bearer绑定的第二 DRB; UE将需要发送的上行数据流通过第二 DRB发送给 SeNB , 由 SeNB将需 要发送的上行数据流发送给 SRC或 SGW。  The UE determines the second DRB that is bound to the first EPS-Bearer by using the first EPS-Bearer; the UE sends the uplink data stream that needs to be sent to the SeNB through the second DRB, and the SeNB sends the uplink data stream that needs to be sent to the SRC or SGW.
在本发明实施例中, 当 UE中有需要发送的上行数据流时, 就可以通过与 第一 EPS-Bearer绑定的第二 DRB发送给 SeNB。 对于 UE中待传输的上行数 据流, 由于第一 EPS-Bearer与第二 DRB建立了映射关系, 则待传输的上行数 据流就可以按照新建立的映射关系转发到 SeNB , 由 SeNB 发送给 SRC 或 SGW, 具体的, 若采用 SRC作为分流点, UE可以通过第二 DRB将上行数据 流发送给 SeNB, 由 SeNB发送给 SRC, 当然 SeNB也可以在接收到 UE通过 第二 DRB发送的上行数据流之后直接发送给 SRC, 具体可以根据应用场景来 设定,此处仅作说明。如果按照现有技术的做法,第一 EPS-Bearer和第一 DRB 的映射关系是固定不变的, 则待传输的上行数据流只能按照原来的映射关系 (第一 EPS-Bearer和第一 DRB的映射关系 )转发到 PeNB, 由 PeNB发送给 SRC或 SGW, 若上行数据流的流量很大时, 只能使用 PeNB发送上行数据流 的方式可能会导致 PeNB的网络负荷比较大,而本发明实施例中可以通过重新 绑定第一 EPS-Bearer和第二 DRB来改变上行数据流的流向, 可以通过 SeNB 来转发上行数据流, 由此可以提高数据流分流的灵活性, 满足异站点之间的负 载均衡, 提高了用户吞吐率和资源利用率。 In the embodiment of the present invention, when there is an uplink data stream that needs to be sent in the UE, the second DRB that is bound to the first EPS-Bearer may be sent to the SeNB. For the uplink data stream to be transmitted in the UE, the first EPS-Bearer is mapped to the second DRB, and the uplink data stream to be transmitted can be forwarded to the SeNB according to the newly established mapping relationship, and sent by the SeNB to the SRC or Specifically, if the SRC is used as the offloading point, the UE may send the uplink data stream to the SeNB through the second DRB, and the SeNB may send the uplink data stream to the SRC. The SeNB may also receive the uplink data stream sent by the UE through the second DRB. It can be directly sent to the SRC, which can be set according to the application scenario. It is only explained here. If the mapping relationship between the first EPS-Bearer and the first DRB is fixed according to the prior art, the uplink data stream to be transmitted can only follow the original mapping relationship (the first EPS-Bearer and the first DRB). The mapping relationship is forwarded to the PeNB, and is sent by the PeNB to the SRC or the SGW. If the traffic of the uplink data stream is large, the method of using the PeNB to send the uplink data stream may cause the network load of the PeNB to be relatively large. In the case can be re The first EPS-Bearer and the second DRB are bound to change the flow direction of the uplink data stream, and the uplink data stream can be forwarded by the SeNB, thereby improving the flexibility of data stream offloading, meeting load balancing between different sites, and improving User throughput and resource utilization.
由以上实施例的描述可知, 首先 UE接收到 PeNB发送的辅配置信息, 该 辅配置信息包括有 SeNB在 SCell中为 UE分配的第二 DRB, 然后 UE绑定第 一 EPS-Bearer和第二 DRB , 而第一 EPS-Bearer在与第二 DRB绑定之前与第 一 DRB 绑定, 绑定第一 EPS-Bearer 与第二 DRB 之后, UE使用与第一 EPS-Bearer绑定的第二 DRB传输数据流。 由于第二 DRB是 SeNB在 SCell中 为 UE分配的数据无线承载, 第一 EPS-Bearer与第二 DRB进行了绑定, 而第 一 EPS-Bearer在与第二 DRB绑定之前与第一 DRB绑定,故本发明实施例中, 第一 EPS-Bearer仍然与 DRB之间建立——对应关系, 但是对应于不同的时间 段, 第一 EPS-Bearer可以与不同的 DRB绑定, 例如 UE在接收到辅配置信息 之前第一 EPS-Bearer 和第一 DRB 绑定, 但是接收到辅配置信息之后第一 EPS-Bearer和第二 DRB绑定, 可见本发明实施例中在接收到辅配置信息之后 UE可以对第一 EPS-Bearer进行重新绑定,从而可以将第一 EPS-Bearer和第一 DRB的绑定改变为第一 EPS-Bearer和第二 DRB的绑定,通过绑定关系的改变, 可以建立第一 EPS-Bearer和第二 DRB之间的映射关系, 故 UE可以使用与第 一 EPS-Bearer绑定的第二 DRB来传输数据流, UE能够使用第二 DRB传输数 据流, 也就实现了 UE和 SeNB之间传输数据流, 由于 UE可以在不同的时间 段绑定第一 EPS-Bearer与不同的 DRB,故可以对使用哪个 DRB来传输数据流 进行灵活选择, 满足异站点间的负载均衡, 提高用户吞吐率和资源利用率。  It can be seen from the description of the foregoing embodiment that the UE first receives the secondary configuration information sent by the PeNB, where the secondary configuration information includes the second DRB allocated by the SeNB for the UE in the SCell, and then the UE binds the first EPS-Bearer and the second DRB. And the first EPS-Bearer is bound to the first DRB before being bound to the second DRB, and after binding the first EPS-Bearer and the second DRB, the UE uses the second DRB transmission bound to the first EPS-Bearer. data flow. The first EPS-Bearer is bound to the second DRB, and the first EPS-Bearer is bound to the first DRB before being bound to the second DRB, because the second DRB is the data radio bearer allocated by the SeNB to the UE in the SCell. Therefore, in the embodiment of the present invention, the first EPS-Bearer still establishes a corresponding relationship with the DRB, but corresponding to different time segments, the first EPS-Bearer may be bound to a different DRB, for example, the UE is receiving. The first EPS-Bearer is bound to the first DRB before the secondary configuration information, but after the secondary configuration information is received, the first EPS-Bearer is bound to the second DRB, and the UE is visible after receiving the secondary configuration information in the embodiment of the present invention. The first EPS-Bearer may be re-bound, so that the binding of the first EPS-Bearer and the first DRB may be changed to the binding of the first EPS-Bearer and the second DRB, and the binding relationship may be changed. Establishing a mapping relationship between the first EPS-Bearer and the second DRB, so that the UE can use the second DRB bound to the first EPS-Bearer to transmit the data stream, and the UE can use the second DRB to transmit the data stream, thereby implementing UE and SeNB The data stream is transmitted. Since the UE can bind the first EPS-Bearer and different DRBs in different time periods, it can flexibly select which DRB to use to transmit data streams, satisfy load balancing between different sites, and improve user throughput. Rate and resource utilization.
以上实施例从 UE侧描述了数据传输方法, 接下来从 PeNB侧对数据传输 方法进行详细说明, 请参阅如图 2所示的方法, 可以包括如下步骤:  The above embodiment describes the data transmission method from the UE side. Next, the data transmission method is described in detail from the PeNB side. Referring to the method shown in FIG. 2, the method may include the following steps:
201、 PeNB获取 SeNB在 SCell中为 UE分配的第二 DRB的信息。  201. The PeNB acquires information about the second DRB allocated by the SeNB to the UE in the SCell.
其中, SeNB管理 SCell, SCell为 UE的辅小区。  The SeNB manages the SCell, and the SCell is a secondary cell of the UE.
在本发明实施例中, UE附着在 PeNB的 PCell中, UE和 PeNB之间建立 有通信连接, 当 RAN网络中为 UE增加 SCell时, SeNB在 SCell中为 UE分 配一个第二 DRB, SeNB为 UE分配第二 DRB之后, PeNB可以获取到该第二 DRB。  In the embodiment of the present invention, the UE is attached to the PCell of the PeNB, and a communication connection is established between the UE and the PeNB. When the SCell is added to the UE in the RAN network, the SeNB allocates a second DRB to the UE in the SCell, and the SeNB is the UE. After the second DRB is allocated, the PeNB may acquire the second DRB.
需要说明的是, 在本发明的一些实施例中, 步骤 201PeNB获取 SeNB在 SCell中为 UE分配的第二 DRB的信息之前, 还可以包括如下步骤:It should be noted that, in some embodiments of the present invention, step 201, the PeNB acquires the SeNB. Before the information about the second DRB allocated to the UE in the SCell, the following steps may be further included:
PeNB在 PCell中为 UE分配第一 DRB, 其中, PeNB管理 PCell, PCell 为 UE的主小区; The PeNB allocates a first DRB to the UE in the PCell, where the PeNB manages the PCell, and the PCell is the primary cell of the UE;
PeNB向 UE发送主配置信息,其中,主配置信息包括:第一 DRB的信息; 其中, 第一 DRB用于与第一 EPS-Bearer绑定, 并用于 UE与 PeNB之间 传输数据流。  The PeNB sends the primary configuration information to the UE, where the primary configuration information includes: information of the first DRB, where the first DRB is used for binding with the first EPS-Bearer, and is used for transmitting data streams between the UE and the PeNB.
具体的, UE通过主配置信息获取到第一 DRB的信息之后, UE绑定第一 EPS-Bearer与第一 DRB , 由于第一 DRB为 PeNB在 PCell中为 UE分配的数 据无线承载, 故 UE可以使用第一 DRB与 PeNB之间传输数据流。  Specifically, after the UE obtains the information of the first DRB by using the primary configuration information, the UE binds the first EPS-Bearer and the first DRB, and the first DRB is a data radio bearer allocated by the PeNB to the UE in the PCell, so the UE may A data stream is transmitted between the first DRB and the PeNB.
在本发明的一些实施例中, 步骤 201PeNB获取 SeNB在 SCell中为 UE分 配的第二 DRB的信息,具体可以包括如下方式: PeNB接收 SeNB发送的第二 DRB的信息; 或, PeNB接收 SRC发送的第二 DRB的信息, 其中, 第二 DRB 的信息由 SeNB发送给 SRC。  In some embodiments of the present invention, the step 201PeNB acquires the information about the second DRB allocated by the SeNB to the UE in the SCell, and may include the following information: the PeNB receives the information of the second DRB sent by the SeNB; or, the PeNB receives the information sent by the SRC. Information of the second DRB, where the information of the second DRB is sent by the SeNB to the SRC.
也就是说, 在如上的实施例中, 若 PeNB和 SeNB之间建立有直接的通信 连接时, SeNB在为 UE分配第二 DRB的信息之后, SeNB通过 SeNB和 PeNB 之间的通信连接发送给 PeNB。 若 PeNB和 SeNB之间没有建立直接的通信连 接时, 假如使用 SRC作为分流点时, SRC分別与 PeNB、 SeNB之间建立有通 信连接, SeNB在为 UE分配第二 DRB的信息之后, SeNB通过 SeNB和 SRC 之间的通信连接发送给 SRC,再由 SRC通过 SRC和 PeNB之间的通信连接发 送给 PeNB。  That is, in the foregoing embodiment, if a direct communication connection is established between the PeNB and the SeNB, after the SeNB allocates the information of the second DRB to the UE, the SeNB sends the information to the PeNB through the communication connection between the SeNB and the PeNB. . If no direct communication connection is established between the PeNB and the SeNB, if the SRC is used as the split point, the SRC establishes a communication connection with the PeNB and the SeNB respectively, and after the SeNB allocates the information of the second DRB to the UE, the SeNB passes the SeNB. The communication connection with the SRC is sent to the SRC, and then sent by the SRC to the PeNB through the communication connection between the SRC and the PeNB.
202、 PeNB向 UE发送辅配置信息。  202. The PeNB sends the secondary configuration information to the UE.
其中,辅配置信息包括第二 DRB的信息,第二 DRB用于与第一 EPS-Bearer 绑定, 并用于 UE与 SeNB之间传输数据流。  The secondary configuration information includes the information of the second DRB, and the second DRB is used for binding with the first EPS-Bearer, and is used for transmitting the data flow between the UE and the SeNB.
在本发明实施例中, PeNB从 SeNB获取到第二 DRB的信息之后, PeNB 根据第二 DRB的信息生成辅配置信息, 在辅配置信息中携带第二 DRB, 并向 UE发送。  In the embodiment of the present invention, after the PeNB acquires the information of the second DRB from the SeNB, the PeNB generates the secondary configuration information according to the information of the second DRB, and carries the second DRB in the secondary configuration information, and sends the information to the UE.
需要说明的是, 本发明实施例中 PeNB向 UE发送辅配置信息是用于指示 UE绑定 EPS-Bearer与 DRB, 至于与哪个 DRB绑定, PeNB通过发送的辅配 置信息向 UE说明, 为了能够使用 SeNB分担 PeNB上的数据流, PeNB获取 到 SeNB为 UE分配的第二 DRB, 若只存在有一个 EPS-Bearer时, PeNB向 UE发送的辅配置信息中可以不携带指示 UE将第二 DRB与哪个 EPS-Bearer 绑定, 当然 PeNB也可以通过发送的辅配置信息指示 UE将哪个 EPS-Bearer 与第二 DRB绑定。 另外, PeNB向 UE发送辅配置信息的方式可以有多种, 例 如可以由 PeNB通过给 UE下发的 RRC重配置消息来发送, 在 RRC重配置消 息中携带第二 DRB的所有配置参数以及 RB ID。 其中, RRC重配置消息中还 可以携带需要绑定哪个 EPS-Bearer, 具体的, 可以通过 EPS-Bearer的 ID来表 示。 It should be noted that, in the embodiment of the present invention, the PeNB sends the secondary configuration information to the UE, which is used to indicate that the UE is bound to the EPS-Bearer and the DRB, and the PD is bound to the DRB by using the secondary configuration information that is sent by the PeNB. The SeNB shares the data flow on the PeNB, and the PeNB acquires the second DRB allocated by the SeNB to the UE. If only one EPS-Bearer exists, the PeNB The secondary configuration information sent by the UE may not carry the indication that the UE binds the second DRB with which EPS-Bearer. The PeNB may also indicate, by using the sent secondary configuration information, which EPS-Bearer is bound to the second DRB. In addition, the PeNB may send the secondary configuration information to the UE in multiple manners, for example, may be sent by the PeNB by using an RRC reconfiguration message sent by the UE, and the RRC reconfiguration message carries all the configuration parameters and the RB ID of the second DRB. . The RRC reconfiguration message may also carry an EPS-Bearer that needs to be bound. Specifically, it may be represented by an EPS-Bearer ID.
具体的, 辅配置信息用于指示 UE解除第一 EPS-Bearer与第一 DRB的绑 定, 并绑定第一 EPS-Bearer与所述第二 DRB , 则 UE根据 PeNB的指示绑定 第一 EPS-Bearer与第二 DRB , 详见前述实施例中对 UE侧执行的数据传输方 法的说明。  Specifically, the secondary configuration information is used to instruct the UE to release the binding of the first EPS-Bearer and the first DRB, and bind the first EPS-Bearer and the second DRB, and the UE binds the first EPS according to the indication of the PeNB. - Bearer and the second DRB, as described in detail in the foregoing embodiment, the description of the data transmission method performed on the UE side.
需要说明的是, 第二 DRB的信息可以为第二 DRB的 RB ID,辅配置信息 为 RRC重配置消息, 则步骤 202PeNB向 UE发送辅配置信息, 包括:  It should be noted that, the information of the second DRB may be the RB ID of the second DRB, and the secondary configuration information is the RRC reconfiguration message, and the step 202, the PeNB sends the secondary configuration information to the UE, including:
PeNB发送 RRC重配置消息, 其中, RRC重配置消息携带有第二 DRB的 RB ID和第一 EPS-Bearer的 ID, RRC重配置消息还携带 Full Config参数, Full Config参数用于指示 UE绑定第一 EPS-Bearer和第二 DRB。  The PeNB sends an RRC reconfiguration message, where the RRC reconfiguration message carries the RB ID of the second DRB and the ID of the first EPS-Bearer, and the RRC reconfiguration message also carries the Full Config parameter, where the Full Config parameter is used to indicate the UE binding. An EPS-Bearer and a second DRB.
则 UE接收到 RRC重配置消息之后, UE可以通过 Full Config参数的取值 为 True获知需要将第一 EPS-Bearer和第二 DRB绑定。 在这种情况下, UE在 获取到 RRC 重配置消息中 Full Config 参数之后, 在 NAS 层中建立第一 EPS-Bearer的 ID与第二 DRB的 RB ID之间的映射关系。  After the UE receives the RRC reconfiguration message, the UE can know that the first EPS-Bearer and the second DRB need to be bound by using the value of the Full Config parameter to be True. In this case, after obtaining the Full Config parameter in the RRC reconfiguration message, the UE establishes a mapping relationship between the ID of the first EPS-Bearer and the RB ID of the second DRB in the NAS layer.
在本发明的一些实施例中, 步骤 202PeNB向 UE发送辅配置信息之后, 还可以包括:  In some embodiments of the present invention, after the step 202PeNB sends the secondary configuration information to the UE, the method may further include:
PeNB接收 SGW发送的数据流;  The PeNB receives the data stream sent by the SGW;
PeNB将数据流分流为第一下行数据流和第二下行数据流;  The PeNB offloads the data stream into the first downlink data stream and the second downlink data stream;
PeNB将第一下行数据流经由 SeNB发送给 UE, 其中, SeNB与 UE之间 传输第一下行数据流的承载为第二 DRB;  The PeNB sends the first downlink data stream to the UE via the SeNB, where the bearer that transmits the first downlink data stream between the SeNB and the UE is the second DRB;
PeNB通过第三 DRB向 UE发送第二下行数据流, 第三 DRB为 PeNB在 PCell中为 UE分配的数据无线承载。  The PeNB sends a second downlink data stream to the UE through the third DRB, where the third DRB is a data radio bearer allocated by the PeNB to the UE in the PCell.
在本发明的实施例中, UE 中建立有两个 EPS-Bearer , 分別为第一 EPS-Bearer和第二 EPS-Bearer, 其中第二 EPS-Bearer和第三 DRB绑定, 第一 EPS-Bearer和第二 DRB绑定。第一下行数据流和第二下行数据流可以为 PeNB 对从 SGW接收到的数据流进行分流得到, 即 PeNB作为分流点, SGW发送数 据流时, PeNB从 SGW接收到数据流并将分流为第一下行数据流和第二下行 数据流,并将第一下行数据流发送给 SeNB,故 UE可以通过第二 DRB从 SeNB 接收到第一下行数据流, 通过第三 DRB从 PeNB接收到第二下行数据流。 In the embodiment of the present invention, two EPS-Bearers are established in the UE, which are a first EPS-Bearer and a second EPS-Bearer, respectively, where the second EPS-Bearer is bound to the third DRB, the first The EPS-Bearer is bound to the second DRB. The first downlink data stream and the second downlink data stream may be obtained by the PeNB to offload the data stream received from the SGW, that is, the PeNB is used as a split point, and when the SGW sends the data stream, the PeNB receives the data stream from the SGW and divides the data into The first downlink data stream and the second downlink data stream are sent to the SeNB, so the UE can receive the first downlink data stream from the SeNB through the second DRB, and receive the first downlink data stream from the PeNB through the third DRB. Go to the second downstream data stream.
由以上实施例的描述可知, PeNB在获取到第二 DRB的信息之后, PeNB 向 UE发送辅配置信息, 该辅配置信息包括有 SeNB在辅小区中为 UE分配的 第二 DRB , 则 UE绑定第一 EPS-Bearer和第二 DRB, 而第一 EPS-Bearer在与 第二 DRB绑定之前与第一 DRB绑定,绑定第一 EPS-Bearer与第二 DRB之后, UE使用与第一 EPS-Bearer绑定的第二 DRB传输数据流。 由于第二 DRB是 SeNB在 SCell中为 UE分配的数据无线承载,第一 EPS-Bearer与第二 DRB进 行了绑定, 而第一 EPS-Bearer在与第二 DRB绑定之前与第一 DRB绑定, 故 本发明实施例中, 第一 EPS-Bearer仍然与 DRB之间建立——对应关系, 但是 对应于不同的时间段, 第一 EPS-Bearer可以与不同的 DRB绑定, 例如 UE在 接收到辅配置信息之前第一 EPS-Bearer和第一 DRB绑定, 但是接收到辅配置 信息之后第一 EPS-Bearer和第二 DRB绑定, 可见本发明实施例中 UE接收到 辅配置信息之后可以对第一 EPS-Bearer 进行重新绑定, 从而可以将第一 EPS-Bearer和第一 DRB的绑定改变为第一 EPS-Bearer和第二 DRB的绑定, 通过绑定关系的改变,可以建立第一 EPS-Bearer和第二 DRB之间的映射关系, 故 UE可以使用与第一 EPS-Bearer绑定的第二 DRB来传输数据流, UE能够 使用第二 DRB传输数据流, 也就实现了 UE和 SeNB之间传输数据流, 由于 UE可以在不同的时间段绑定第一 EPS-Bearer与不同的 DRB ,故可以对使用哪 个 DRB来传输数据流进行灵活选择, 满足异站点间的负载均衡, 提高用户吞 吐率和资源利用率。  According to the description of the foregoing embodiment, after the PeNB acquires the information of the second DRB, the PeNB sends the secondary configuration information to the UE, where the secondary configuration information includes the second DRB allocated by the SeNB to the UE in the secondary cell, and the UE is bound. a first EPS-Bearer and a second DRB, and the first EPS-Bearer is bound to the first DRB before being bound to the second DRB, and after binding the first EPS-Bearer and the second DRB, the UE uses the first EPS - The second DRB transport stream bound by Bearer. The first EPS-Bearer is bound to the second DRB, and the first EPS-Bearer is bound to the first DRB before being bound to the second DRB, because the second DRB is the data radio bearer allocated by the SeNB to the UE in the SCell. Therefore, in the embodiment of the present invention, the first EPS-Bearer still establishes a corresponding relationship with the DRB, but corresponding to different time segments, the first EPS-Bearer may be bound to different DRBs, for example, the UE is receiving. The first EPS-Bearer is bound to the first DRB before the secondary configuration information, but after the secondary configuration information is received, the first EPS-Bearer is bound to the second DRB, and the UE may receive the secondary configuration information after receiving the secondary configuration information in the embodiment of the present invention. The first EPS-Bearer is re-bound, so that the binding of the first EPS-Bearer and the first DRB can be changed to the binding of the first EPS-Bearer and the second DRB, and the binding relationship can be established by changing the binding relationship. a mapping relationship between the first EPS-Bearer and the second DRB, so the UE can use the second DRB bound to the first EPS-Bearer to transmit the data stream, and the UE can use the second DRB to transmit the data stream, thereby implementing UE and SeNB The data stream is transmitted. Since the UE can bind the first EPS-Bearer and different DRBs in different time periods, it can flexibly select which DRB to use to transmit the data stream, meet the load balancing between different sites, and improve the user throughput. And resource utilization.
为了详细说明本发明实施例中数据传输方法,接下来以对下行数据流的分 流过程为例进行说明,请参阅如图 3所示的下行数据流的分流方法示意图。 其 中, UE中建立了两个 EPS-Bearer,分別为第一 EPS-Bearer和第二 EPS-Bearer, 如图 3中左部分示图,为执行本发明载波聚合的分流方法之前的下行数据流传 输示意图, 其中, 第一 EPS-Bearer和第一 DRB初始绑定, 第二 EPS-Bearer 和第三 DRB绑定, 下行数据流包括: 第一下行数据流和第二下行数据流, 分 別通过第二 EPS-Bearer和第一 EPS-Bearer发送到 UE。 In order to describe the data transmission method in the embodiment of the present invention in detail, the following describes the offloading process of the downlink data stream as an example. Referring to the schematic diagram of the method for distributing the downlink data stream as shown in FIG. The two EPS-Bearers are respectively set up in the UE, which are the first EPS-Bearer and the second EPS-Bearer respectively, as shown in the left part of FIG. 3, which is a downlink data stream transmission before performing the traffic aggregation method of the carrier aggregation of the present invention. The first EPS-Bearer is initially bound to the first DRB, and the second EPS-Bearer is bound to the third DRB. The downlink data stream includes: a first downlink data stream and a second downlink data stream, where Do not send to the UE through the second EPS-Bearer and the first EPS-Bearer.
如图 3中右部分示图,为执行本发明载波聚合的分流方法之后的下行数据 流传输示意图, 其中, 第一 EPS-Bearer和第二 DRB进行了重新绑定, 则在增 加了 SCell之后, 终端中的 DRB仍然与 EPS-Bearer保持——对应, 但是对应 关系发生了变化, 且第二 DRB为 SeNB为在 SCell中为 UE分配的 DRB, 第 二 EPS-Bearer和第三数据无线承载绑定, 下行数据流包括第一下行数据流和 第二下行数据流, 然后第一下行数据流通过第二 DRB发送给 SeNB, 第二下 行数据流通过第三 DRB发送给 PeNB, 然后分別将第二下行数据流和第一下 行数据流发送到调制解调器(modem )和终端设备(TE, Terminal Equipment ) 之间的接口, 该接口将第一下行数据流和第二下行数据流进行汇聚, 然后输出 下行数据流。  As shown in the right part of FIG. 3, a schematic diagram of downlink data flow transmission after performing the traffic aggregation method of the carrier aggregation method, wherein the first EPS-Bearer and the second DRB are re-bound, after the SCell is added, The DRB in the terminal still maintains - corresponding to the EPS-Bearer, but the correspondence changes, and the second DRB is the DRB allocated by the SeNB for the UE in the SCell, and the second EPS-Bearer and the third data radio bearer are bound. The downlink data stream includes a first downlink data stream and a second downlink data stream, and then the first downlink data stream is sent to the SeNB through the second DRB, and the second downlink data stream is sent to the PeNB through the third DRB, and then the first downlink data stream is respectively sent to the PeNB. The second downlink data stream and the first downlink data stream are sent to an interface between a modem and a terminal equipment (TE, Terminal Equipment), where the interface aggregates the first downlink data stream and the second downlink data stream, and then Output the downstream data stream.
以上实施例从用户设备一侧出发描述了本发明的数据传输方法,接下来介 绍本发明另一个实施例提供的数据传输方法,如图 4所示, 可以包括如下在步 骤:  The above embodiment describes the data transmission method of the present invention from the user equipment side. Next, the data transmission method provided by another embodiment of the present invention, as shown in FIG. 4, may include the following steps:
401、 当 UE绑定第一 EPS-Bearer和第二 DRB之后, SRC建立从 SRC到 401. After the UE binds the first EPS-Bearer and the second DRB, the SRC establishes from the SRC to
SCell的数据通道。 SCell's data channel.
其中, 上述第二 DRB为 SeNB在 SCell中为 UE分配的 DRB, 上述第一 EPS-Bearer在与上述第二 DRB绑定之前与第一 DRB绑定。  The second DRB is a DRB allocated by the SeNB to the UE in the SCell, and the first EPS-Bearer is bound to the first DRB before being bound to the second DRB.
需要说明的是, SRC建立从 SRC到 SCell之间的数据通道, 其中, SRC 是一个逻辑功能实体, 具体可以部署在 PeNB来实现, 也可以作为单独的网元 来部署, 此处不做限定。 本发明实施例中, SRC 建立的数据通道具体可以为 通用分组无线月良务隧道协议用户平面 (GPRS Tunnelling Protocol Userplane, GTPU ) 隧道或通用路由封装 ( Generic Route Encapsulation, GRE ) 隧道, 可 以理解的是, SRC建立从 SRC到 SCell的数据通道也可以是其它传输通道, 只要满足能够与 PeNB、 SeNB, SGW、 分组数据网网关( Packet Data Network Gateway, PGW )对接, 能够实现数据流的传输即可。  It should be noted that the SRC establishes a data channel from the SRC to the SCell, where the SRC is a logical function entity, which can be deployed in the PeNB or deployed as a separate network element, which is not limited herein. In the embodiment of the present invention, the data channel established by the SRC may be a GPRS Tunneling Protocol User Plane (GTPU) tunnel or a Generic Route Encapsulation (GRE) tunnel, which is understandable. The SRC establishes a data channel from the SRC to the SCell, and may also be another transmission channel. As long as it can meet the PeNB, the SeNB, the SGW, and the Packet Data Network Gateway (PGW), the data stream can be transmitted.
402、 SRC将上述数据通道与上述第二 DRB链接。  402. The SRC links the data channel to the second DRB.
其中,为了能够实现 SRC分发给 SeNB的数据流被传输到第二 DRB, SRC 需要将上述数据通道与第二 DRB链接, 具体的, 由于 EPS-Bearer用于描述从 UE到 PGW的端到端承载, 在 SRC到 SeNB—段, 第一 EPS-Bearer具体为 Slbearer , 故可以将数据通道与 Slbearer 链接就实现了数据通道与第一 EPS-Bearer链接。 The SRC needs to link the data channel to the second DRB in order to enable the data stream that is distributed to the SeNB by the SRC to be transmitted. Specifically, the EPS-Bearer is used to describe the end-to-end bearer from the UE to the PGW. In the SRC to SeNB segment, the first EPS-Bearer is specifically Slbearer, so the data channel can be linked with the Slbearer to achieve the data channel and the first EPS-Bearer link.
需要说明的是, 步骤 402SRC将数据通道与第二 DRB链接之后, 可以执 行步骤 403至 405, 也可以执行步骤 406和步骤 407, 具体执行哪个流程, 可 以由具体的应用场景决定。  It should be noted that, after the step 402SRC links the data channel with the second DRB, the steps 403 to 405 may be performed, and the steps 406 and 407 may be performed, and the specific execution process may be determined by a specific application scenario.
403、 SRC接收 SGW发送的下行数据流。  403. The SRC receives the downlink data stream sent by the SGW.
在本发明实施例中, SGW向 SRC发送下行数据流, 由此 SRC可以获取 到下行数据流。  In the embodiment of the present invention, the SGW sends a downlink data stream to the SRC, so that the SRC can obtain the downlink data stream.
404、 SRC将接收到的上述数据流分流为第一下行数据流和第二下行数据 流。  404. The SRC divides the received data stream into a first downlink data stream and a second downlink data stream.
在本发明实施例中, SRC接收到数据流后, 将 SRC分流为第一下行数据 流和第二下行数据流的方式很多, 例如, SRC 可以根据网络的负载信息发生 变化、 UE的连接状况发生变化等来确定如何进行分流, 以调整数据流在 PCell 和 SCell中的分布。  In the embodiment of the present invention, after the SRC receives the data stream, the SRC is split into the first downlink data stream and the second downlink data stream. For example, the SRC may change according to the load information of the network, and the connection status of the UE. Changes such as changes are made to determine how to offload to adjust the distribution of data streams in PCell and SCell.
405、SRC将第一下行数据流、第二下行数据流分別发送给 SeNB和 PeNB。 在本发明实施例中, SRC按照分流比例确定第一下行数据流的数据流量 和第二下行数据流的数据流量,然后通过前述建立的数据通道将第一下行数据 流发送给 SeNB, 将第二下行数据流发送给 PeNB, 由此实现数据流在 PCell 和 SCell中分布的重新调整。  405. The SRC sends the first downlink data stream and the second downlink data stream to the SeNB and the PeNB, respectively. In the embodiment of the present invention, the SRC determines the data traffic of the first downlink data stream and the data traffic of the second downlink data stream according to the split ratio, and then sends the first downlink data stream to the SeNB by using the foregoing established data channel, and The second downlink data stream is sent to the PeNB, thereby realizing the re-adjustment of the distribution of the data stream in the PCell and the SCell.
本发明实施例中, UE对第一 EPS-Bearer和第二 DRB进行了重新绑定, 改变了第一 EPS-Bearer与 DRB的绑定关系, SRC建立了从 SRC到 SCell的数 据通道,故 SRC发送给 SeNB的第一下行数据流就可以通过第二 DRB发送到 UE中。故本发明实施例中可以通过重新绑定第一 EPS-Bearer和第二 DRB,使 得 SRC发送的数据流可以灵活的分流为第一下行数据流和第二下行数据流然 后分別发送到 SeNB和 PeNB中, 从而可以提高数据流分流的灵活性, 满足异 站点间的负载均衡, 提高用户吞吐率和资源利用率。  In the embodiment of the present invention, the UE re-binds the first EPS-Bearer and the second DRB, and changes the binding relationship between the first EPS-Bearer and the DRB, and the SRC establishes a data channel from the SRC to the SCell, so the SRC The first downlink data stream sent to the SeNB can be sent to the UE through the second DRB. Therefore, in the embodiment of the present invention, the first EPS-Bearer and the second DRB may be re-bound, so that the data stream sent by the SRC can be flexibly split into the first downlink data stream and the second downlink data stream, and then sent to the SeNB and respectively. In the PeNB, the flexibility of data stream offloading can be improved, load balancing between different sites can be satisfied, and user throughput and resource utilization can be improved.
406、 SRC通过上述数据通道接收 SeNB发送的第一上行数据流。  406. The SRC receives the first uplink data stream sent by the SeNB by using the foregoing data channel.
在本发明实施例中, UE将第一 EPS-Bearer和第二 DRB绑定之后, UE可 以将待传输的第一上行数据流通过第二 DRB发送给 SeNB, SeNB接收到第一 上行数据流之后向 SRC转发, SRC通过从 SRC到 SCell的数据通道接收到第 一上行数据流。 In the embodiment of the present invention, after the UE binds the first EPS-Bearer and the second DRB, the UE may send the first uplink data stream to be transmitted to the SeNB by using the second DRB, and after receiving the first uplink data stream, the SeNB receives the first uplink data stream. Forwarded to the SRC, the SRC receives the data through the data channel from the SRC to the SCell An upstream data stream.
407、 SRC将第一上行数据流发送给 SGW。  407. The SRC sends the first uplink data stream to the SGW.
在本发明实施例中, SRC接收到 SeNB转发的第一上行数据流后,将第一 上行数据流发送给 SGW , 由此实现了上行数据流从通过 PCell传输调整到上 行数据流通过 SCell传输, 减少了 PCell的网络负荷, 可是实现灵活的数据分 流。  In the embodiment of the present invention, after receiving the first uplink data stream forwarded by the SeNB, the SRC sends the first uplink data stream to the SGW, thereby realizing that the uplink data stream is adjusted from being transmitted through the PCell to being transmitted through the SCell. Reduces the network load of PCell, but achieves flexible data offloading.
本发明实施例中, UE对第一 EPS-Bearer与第二 DRB进行重新绑定, 改 变了第一 EPS-Bearer的绑定关系, 故 SRC可以从 SeNB接收到 UE发送的第 一上行数据流, 而改变了第一上行数据流通过 PeNB发送给 SRC的传输方式。 故本发明实施例中通过重新绑定第一 EPS-Bearer和第二 DRB , 从而可以提高 数据流分流的灵活性, 满足异站点间的负载均衡,提高用户吞吐率和资源利用 率。 为便于更好的理解和实施本发明实施例的上述方案,下面举例相应的应用 场景来进行具体说明。  In the embodiment of the present invention, the UE re-binds the first EPS-Bearer and the second DRB, and changes the binding relationship of the first EPS-Bearer, so the SRC can receive the first uplink data stream sent by the UE from the SeNB. The transmission mode in which the first uplink data stream is sent to the SRC through the PeNB is changed. Therefore, in the embodiment of the present invention, by rebinding the first EPS-Bearer and the second DRB, the flexibility of data stream offloading can be improved, load balancing between different sites can be satisfied, and user throughput and resource utilization rate can be improved. To facilitate a better understanding and implementation of the above solutions of the embodiments of the present invention, the corresponding application scenarios are exemplified below for specific description.
在本发明的一些实施例中,第一演进型分组网络承载具体可以为 Assisting In some embodiments of the present invention, the first evolved packet network bearer may specifically be Assisting
EPS-Bearer, 接下来分別举例说明 Assisting EPS-Bearer的建立过程: EPS-Bearer, next to illustrate the establishment process of Assisting EPS-Bearer:
( 1 )、 在 UE 附着 ( Attach )到载波聚合主小区 PCell 时建立 Assisting EPS-Bearer,且 Assisting EPS-Bearer永久存在,类似于建立 Default EPS-Bearer 的流程。  (1) Establishing an Assisting EPS-Bearer when the UE attaches to the carrier aggregation primary cell PCell, and the Assisting EPS-Bearer is permanent, similar to the process of establishing a Default EPS-Bearer.
3GPP标准中将承载分为 Default EPS-Bearer和 Dedicated EPS-Bearer, The bearer is divided into Default EPS-Bearer and Dedicated EPS-Bearer in the 3GPP standard.
Dedicated EPS-Bearer 只能传特定的数据流, 传哪些数据流是由数据流模板 ( Traffic Flow Templete , TFT )确定, TFT的作用是将确定的数据流映射到确 定的承载上去。 Default EPS-Bearer没有对应的 TFT, 它可以传任意数据流。 如果某一个数据流不能根据 TFT找到对应的 Dedicated EPS-Bearer, 则使用 Default EPS-Bearer来传输。 Default EPS-Bearer只有一个, 是在 UE Attach时 建立的, 其他的都为 Dedicated EPS-Bearer。 Dedicated EPS-Bearer can only transmit specific data streams. Which data streams are determined by Traffic Flow Templete (TFT). The role of TFT is to map the determined data stream to the determined bearer. Default EPS-Bearer does not have a corresponding TFT, it can pass any data stream. If a data stream cannot find the corresponding Dedicated EPS-Bearer according to the TFT, it uses the Default EPS-Bearer to transmit. There is only one Default EPS-Bearer, which is established when the UE is attached, and the others are Dedicated EPS-Bearer.
本发明实施例中,在 UE Attach时建立的 Assisting EPS-Bearer可以看成是 第二个 Default EPS-Bearer, 也可以看成是 Dedicated EPS-Bearer。 如果看成为 第二个 Default EPS-Bearer, 则按照现有流程, 可以由 MME触发建立, 就像 Default EPS-Bearer的建立一样。 如果将 Assisting EPS-Bearer理解为 Dedicated EPS-Bearer , 则可以由终端触发、 也可以由核心网 ( PCRF或 PDNGW )触发。 In the embodiment of the present invention, the Assisting EPS-Bearer established when the UE is attached may be regarded as the second Default EPS-Bearer, or may be regarded as the Dedicated EPS-Bearer. If you look at the second Default EPS-Bearer, follow the existing process, you can trigger the establishment by the MME, just like The establishment of Default EPS-Bearer is the same. If Assisting EPS-Bearer is understood as Dedicated EPS-Bearer, it can be triggered by the terminal or by the core network (PCRF or PDNGW).
如果将 Assisting EPS-Bearer看成是第二个 Default EPS-Bearer, 则不需要 为该 Assisting EPS-Bearer设置任何的 TFT以及相关参数。 当某一数据流找不 到对应的 Dedicated EPS-Bearer 时, 可以在 Assisting EPS-Bearer和 Default EPS-Bearer中任选一个为该数据流传输。  If Assisting EPS-Bearer is considered to be the second Default EPS-Bearer, then no TFT and related parameters need to be set for the Assisting EPS-Bearer. When a certain data stream cannot find the corresponding Dedicated EPS-Bearer, you can select one of the Assisting EPS-Bearer and Default EPS-Bearer for the data stream.
如果将 Assisting EPS-bearer看成是 Dedicated EPS-Bearer, 由于 Assisting 在建立时并不知道哪些数据流在其上传输, 所以为避免对其他 DedicatedEPS-bearer的影响, 可对 TFT中相关参数设置如下:  If Assisting EPS-bearer is regarded as Dedicated EPS-Bearer, since Assisting does not know which data streams are transmitted on it when establishing, so to avoid the influence on other DedicatedEPS-bearers, the relevant parameters in TFT can be set as follows:
Packet Filter Identifier = 5;  Packet Filter Identifier = 5;
Packet Filter Direction = uplink only;  Packet Filter Direction = uplink only;
Remote port = 9 (the discard port)。  Remote port = 9 (the discard port).
通过如上配置, 该 Assisting EPS-Bearer就成了哑元承载, 即任何数据都 不会在 PDNGW或 UE端被分配到该承载上。  With the above configuration, the Assisting EPS-Bearer becomes a dummy bearer, that is, no data is allocated to the bearer on the PDNGW or UE side.
( 2 )、 在有业务数据传输时建立 Assisting EPS-Bearer。  (2) Establish Assisting EPS-Bearer when there is service data transmission.
对于有业务数据传输且没有 Dedicated EPS-Bearer 时, 触发建立一个 Dedicated EPS-Bearer , 并将此 Dedicated EPS-Bearer 看成是 Assisting EPS-Bearer; 如果有新业务数据流传输且已经存在 Dedicated EPS-Bearer时, 可以根据服务质量 (Quality of Service , QoS )将数据流合并到已经存在的 Dedicated EPS-Bearer中, 并更新 TFT。 按照该承载建立方式, 数据流将主要 在 Assisting EPS-Bearer中传输。  For a service data transmission without Dedicated EPS-Bearer, trigger a Dedicated EPS-Bearer and treat the Dedicated EPS-Bearer as Assisting EPS-Bearer; if there is new service data stream and Dedicated EPS-Bearer already exists At the same time, the data stream can be merged into the existing Dedicated EPS-Bearer according to Quality of Service (QoS), and the TFT is updated. According to the bearer establishment mode, the data stream will be mainly transmitted in the Assisting EPS-Bearer.
请参阅如图 5所示,为本发明实施例提供的数据传输方法中一个应用场景 的示意图。  FIG. 5 is a schematic diagram of an application scenario in a data transmission method according to an embodiment of the present invention.
在图 5中, 当 UE中建立有两个或两个以上 EPS-Bearer 时, 其中, IP层 中为了能够实现异站点 CA, 如果 UE原本只有一个 EPS-Bearer, 则可以按照 前述实施例描述的方法建立一个 Assisting EPS-Bearer, 如果 UE原本就有两个 或两个以上 EPS-Bearer时, 可以不建立 Assisting EPS-Bearer, 如果此时增加 SCell, 由于在 SeNB中有完整的协议栈, 这就意味着在 SCell中至少建立一个 DRB , 根据 EPS-Bearer与 DRB 的——对应关系, 这些 DRB都需要有一个 EPS-Bearer与其对应。 例如图 5中, UE中共建立有两个 EPS-Bearer, 分別是 Default EPS-Bearer 和 Assisting EPS-Bearer。 EPS-Bearer是一个从 UE到 PGW的端到端承载, 在 实现时 EPS-Bearer可以由 DRB、 SI Bearer ( E-RAB )、 S5/S8 Bearer分段实现。 具体的, Default EPS-Bearer由 DRB3、 E-RAB3、 S5/S8 Bearer分段实现, Assisting EPS-Bearer由 DRBl、 E-RAB 1 , S5/S8 Bearer分段实现, Assisting EPS-Bearer 指的是前述实施例中的第一 EPS-Bearer , Default EPS-Bearer指的是前述实施 例中的第二 EPS-Bearer。在 SCell增加前, Assisting EPS-Bearer和 DRBl绑定, 在 SCell的增加流程之后, PeNB向 UE发送辅配置信息, 其中包括 DRB2的 信息, DRB2是 SeNB在 SCell中为 UE增加的 DRB, 然后, UE绑定 DRB2 与 Assisting EPS-Bearer, 从而重新建立了 Assisting EPS-Bearer和 DRB2之间 的映射关系。 In FIG. 5, when two or more EPS-Bearers are established in the UE, in order to enable the hetero-site CA in the IP layer, if the UE originally has only one EPS-Bearer, it may be described in the foregoing embodiment. The method is to establish an Assisting EPS-Bearer. If the UE originally has two or more EPS-Bearers, the Assisting EPS-Bearer may not be established. If the SCell is added at this time, since there is a complete protocol stack in the SeNB, this is This means that at least one DRB is established in the SCell. According to the correspondence between the EPS-Bearer and the DRB, these DRBs need to have an EPS-Bearer corresponding to them. For example, in Figure 5, a total of two EPS-Bearers are established in the UE, namely Default EPS-Bearer and Assisting EPS-Bearer. EPS-Bearer is an end-to-end bearer from the UE to the PGW. In implementation, the EPS-Bearer can be implemented by DRB, SI Bearer (E-RAB), and S5/S8 Bearer. Specifically, the Default EPS-Bearer is implemented by the DRB3, E-RAB3, and S5/S8 Bearer segments, and the Assisting EPS-Bearer is implemented by the DRB1, E-RAB 1, and S5/S8 Bearer segments. The Assisting EPS-Bearer refers to the foregoing. The first EPS-Bearer, Default EPS-Bearer in the embodiment refers to the second EPS-Bearer in the foregoing embodiment. Before the SCell is added, the Assisting EPS-Bearer and the DRB1 are bound. After the SCell is added, the PeNB sends the secondary configuration information to the UE, including the information of the DRB2, where the DRB is the DRB added by the SeNB to the UE in the SCell, and then the UE Bind DRB2 and Assisting EPS-Bearer to re-establish the mapping between Assisting EPS-Bearer and DRB2.
本发明实施例提供的数据传输方法, 以如下应用场景进行说明,数据传输 方法可包括如下步骤:  The data transmission method provided by the embodiment of the present invention is described in the following application scenario. The data transmission method may include the following steps:
S501、在 SCell增加之前,两个 EPS-Bearer上传输的数据流都是通过 PeNB 传输, Assisting EPS-Bearer和 DRBl绑定, Default EPS-Bearer和 DRB3绑定, DRBl 指的是前述实施例中的第一 DRB, DRB3 指的是前述实施例中的第三 DRB。 业务数据流在 Default EPS-Bearer上传输, Assisting EPS-Bearer空闲, 也即 DRB3中有数据流传输, DRB1空闲。  S501. Before the SCell is added, the data streams transmitted on the two EPS-Bearers are transmitted through the PeNB, the Assisting EPS-Bearer is bound to the DRB1, and the Default EPS-Bearer is bound to the DRB3. The DRB1 refers to the foregoing embodiment. The first DRB, DRB3 refers to the third DRB in the foregoing embodiment. The service data stream is transmitted on the Default EPS-Bearer, and the Assisting EPS-Bearer is idle. That is, the data stream is transmitted in the DRB3, and the DRB1 is idle.
S502、 当增加 SCell时, UE接收 PeNB发送的 SeNB在 SCell中为 UE分 配的 DRB2 ( DRB2为新建立的 DRB ), 接下来 UE绑定 DRB2和 Assisting EPS-Bearer。 具体做法可以是:  S502. When the SCell is added, the UE receives the DRB2 (the DRB2 is the newly established DRB) allocated by the SeNB for the UE in the SCell, and then the UE binds the DRB2 and the Assisting EPS-Bearer. The specific approach can be:
( 1 )、 SeNB在 SCell中为 UE分配 DRB2的 RB ID,并配置 DRB2的 L1、 L2协议栈的所有参数, 并将这些配置参数传递给 PeNB。  (1) The SeNB allocates the RB ID of the DRB2 to the UE in the SCell, and configures all parameters of the L1 and L2 protocol stacks of the DRB2, and delivers the configuration parameters to the PeNB.
( 2 )、 PeNB在给 UE的 RRC重配置消息中携带 DRB2。 RRC重配置消息 中带上 DRB2的所有参数、 RB ID和 Assisting EPS-Bearer的 EPS-Bearer ID, 同时将 Full Config参数设置为 Tme。 则 UE接收到如上述的 RRC重配置消息 消息后, 若获取到 RRC重配置消息中 Full Config参数取值为 True, 将把该 RB ID ( DRB2 )和 EPS-Bearer ID ( Assisting EPS-Bearer )绑定, 实际上也就 是将 EPS-Bearer ID原来对应的 DRB( DRBl )替换成 DRB2,在 UE中 EPS-bearer 与 DRB仍然满足——映射的关系,更好的兼容现有技术中 EPS-bearer与 DRB 之间为——映射的设计思想。 (2) The PeNB carries the DRB2 in the RRC reconfiguration message to the UE. The RRC reconfiguration message carries all the parameters of the DRB2, the RB ID, and the EPS-Bearer ID of the Assisting EPS-Bearer, and sets the Full Config parameter to Tme. After receiving the RRC reconfiguration message, the UE will bind the RB ID (DRB2) and the EPS-Bearer ID (Assisting EPS-Bearer) if the value of the Full Config parameter in the RRC reconfiguration message is True. In fact, the original DRB (DRBl) corresponding to the EPS-Bearer ID is replaced with DRB2. In the UE, the EPS-bearer and the DRB still satisfy the mapping relationship, which is better compatible with the EPS-bearer in the prior art. DRB Between - the design of the mapping.
需要说明的是, 在本发明实施例中, RRC 重配置消息 (RRC Connection Reconfiguration ) 消息中增加和^ ί'爹改 DRB 载可以通过如下方式:  It should be noted that, in the embodiment of the present invention, adding and suppressing the DRB in the RRC Connection Reconfiguration message may be as follows:
将以下参数配置中的 pdcp-Config、 rlc-Config、 logicalChannelldentity、 logicalChannelConfig等参数全部配置一遍, drb-Identity为 SCell分配的 DRB ID (即 DRB2 ), eps-Bearerldentity填上 Assisting EPS-Bearer的 ID,然后再将 RRC ConnectionReconfiguration消息中的 fullConfig-r9设置为 True, UE的 RRC层 接收到 fullConfig-r9 ==Tme后,将通知 UE的 NAS层将 DRB-ToAddMod中的 eps-Bearerldentity和 drb-Identity重新绑定, 完成 DRB与 EPS-Bearer的映射关 系。 在本发明的一些实施例中, UE将第一 EPS-Bearer和第二 DRB进行绑定 使用的代码段可以如下所示:  Configure the parameters of pdcp-Config, rlc-Config, logicalChannelldentity, logicalChannelConfig, etc. in the following parameter configuration, drb-Identity is the DRB ID assigned by SCell (ie DRB2), eps-Bearerldentity is filled in the ID of Assisting EPS-Bearer, then After the fullConfig-r9 in the RRC ConnectionReconfiguration message is set to True, the RRC layer of the UE receives the fullConfig-r9 ==Tme, and then notifies the NAS layer of the UE to re-bind the eps-Bearerldentity and the drb-Identity in the DRB-ToAddMod. , complete the mapping relationship between DRB and EPS-Bearer. In some embodiments of the present invention, the code segment used by the UE to bind the first EPS-Bearer and the second DRB may be as follows:
DRB-ToAddMod:: = SEQUENCE { DRB-ToAddMod:: = SEQUENCE {
eps-Bearerldentity INTEGER (0..15) OPTIONAL, -Cond  eps-Bearerldentity INTEGER (0..15) OPTIONAL, -Cond
DRB-Setup  DRB-Setup
drb-Identity DRB-Identity,  drb-Identity DRB-Identity,
pdcp-Config PDCP-Config OPTIONAL, Cond PDCP rlc-Config RLC-Config OPTIONAL, -- Cond Setup logicalChannelldentity INTEGER (3..10) OPTIONAL -Cond DRB-Setup  pdcp-Config PDCP-Config OPTIONAL, Cond PDCP rlc-Config RLC-Config OPTIONAL, -- Cond Setup logicalChannelldentity INTEGER (3..10) OPTIONAL -Cond DRB-Setup
logicalChannelConfig LogicalChannelConfig OPTIONAL,— Cond Setup  logicalChannelConfig LogicalChannelConfig OPTIONAL, — Cond Setup
RRCConnectionReconfiguration-v920-IEs:: = SEQUENCE { RRCConnectionReconfiguration-v920-IEs:: = SEQUENCE {
otherConfig-r9 OtherConfig-r9 OPTIONAL, - Need ON  otherConfig-r9 OtherConfig-r9 OPTIONAL, - Need ON
fullConfig-r9 ENUMERATED {true} OPTIONAL, - Cond  fullConfig-r9 ENUMERATED {true} OPTIONAL, - Cond
HO-Reestab  HO-Reestab
nonCriticalExtension RCConnectionReconfiguration-v 1020-IE PTIONAL 需要说明的是, 如上描述的代码段只是示例, 在实际应用中还需要结合 3GPP的各版本协议以及实际的应用场景来灵活设置各个配置参数的取值, 此 处不再赘述。 nonCriticalExtension RCConnectionReconfiguration-v 1020-IE PTIONAL It should be noted that the code segment as described above is only an example, and it needs to be combined in practical applications. The values of the configuration parameters are flexibly set in the protocol versions of the 3GPP and the actual application scenarios, and are not described here.
S503. SRC建立从 SRC到 SCell的数据通道,并将该数据通道和第二 DRB 链接。 这样 Assisting EPS-Bearer中的传输的数据流就可以由此通道经过 SCell 下发给 UE。  S503. The SRC establishes a data channel from the SRC to the SCell and links the data channel with the second DRB. In this way, the data stream transmitted in the Assisting EPS-Bearer can be sent to the UE through the SCell.
其中, 建立的 SRC与 SCell之间的数据通道, 可以是 GTPU隧道、 GRE 隧道、 或者其他数据通道, 为了和 3GPP方案保持一致性, 该数据通道可以为 GTPU隧道。  The data channel between the established SRC and the SCell may be a GTPU tunnel, a GRE tunnel, or other data channel. To maintain consistency with the 3GPP solution, the data channel may be a GTPU tunnel.
需要说明的是, SCell增加之前,业务数据流在 Default EPS-Bearer上传输, Assisting EPS-Bearer空闲, 也即 DRB3中有数据流传输, DRB1空闲。 可以理 解的是,在 SCell增加之前,业务数据流也可以在 Assisting EPS-Bearer上传输, Default EPS-Bearer空闲, 也即 DRB1中有数据流传输, DRB3空闲。  It should be noted that before the SCell is added, the service data stream is transmitted on the Default EPS-Bearer, and the Assisting EPS-Bearer is idle, that is, the data stream is transmitted in the DRB3, and the DRB1 is idle. It can be understood that before the SCell is added, the service data stream can also be transmitted on the Assisting EPS-Bearer. The Default EPS-Bearer is idle, that is, the data stream is transmitted in the DRB1, and the DRB3 is idle.
接下来介绍本发明实施例提供的载波聚合的分流方法的另一应用场景,具 体可以包括如下步骤:  Another application scenario of the method for distributing the carrier aggregation provided by the embodiment of the present invention is as follows:
( 1 )、假设 UE有两个 EPS-Bearer存在,分別为默认演进型分组网络承载 (1) It is assumed that the UE has two EPS-Bearers, which are respectively the default evolved packet network bearers.
Default EPS-Bearer和辅助演进型分组网络承载 Assisting EPS-Bearer, 其中, Assisting EPS-Bearer 指的是前述实施例中的第三 EPS-Bearer , Default EPS-Bearer指的是前述实施例中的第一 EPS-Bearer。 在 SCell增加之前, 这两 个 EPS-Bearer上传输的数据流都是通过 PeNB传输, Assisting EPS-Bearer和 DRB2绑定, Default EPS-Bearer和 DRB1绑定, DRB2指的是前述实施例中的 第二 DRB, DRB1 指的是前述实施例中的第一 DRB。 业务数据流在 Default EPS-Bearer上传输, Assisting EPS-Bearer空闲, 也即 DRB 1中有数据流传输, DRB2空闲。 The default EPS-Bearer and the assisted evolved packet network bear the Assisting EPS-Bearer, where the Assisting EPS-Bearer refers to the third EPS-Bearer in the foregoing embodiment, and the Default EPS-Bearer refers to the first in the foregoing embodiment. EPS-Bearer. Before the SCell is added, the data streams transmitted on the two EPS-Bearers are transmitted through the PeNB, the Assisting EPS-Bearer and the DRB2 are bound, and the Default EPS-Bearer is bound to the DRB1. The DRB2 refers to the foregoing in the foregoing embodiment. The second DRB, DRB1 refers to the first DRB in the foregoing embodiment. The service data stream is transmitted on the Default EPS-Bearer, and the Assisting EPS-Bearer is idle. That is, the data stream is transmitted in the DRB 1, and the DRB2 is idle.
( 2 )、 PeNB在给 UE发送的 RRC重配置消息中,将重配原 DRB1的所有 L1/L2参数和 DRB2的所有 L1/L2参数; 同时, 将 DRB1中的 EPS-bearer ID 设置为 Assisting EPS-Bearer ID, 将 DRB 2中的 EPS-bearer ID设置为 Default EPS-Bearer ID, Full-config 参数设置为 Tme。 这样导致的结果是 DRB1 与 Assisting EPS-Bearer绑定、 DRB2与 Default EPS-Bearer绑定。  (2) The PeNB re-allocates all L1/L2 parameters of the original DRB1 and all L1/L2 parameters of the DRB2 in the RRC reconfiguration message sent to the UE; meanwhile, sets the EPS-bearer ID in the DRB1 to the Assisting EPS. -Bearer ID, set the EPS-bearer ID in DRB 2 to Default EPS-Bearer ID, and set the Full-config parameter to Tme. The result of this is that DRB1 is bound to Assisting EPS-Bearer and DRB2 is bound to Default EPS-Bearer.
通过如上配置,实现了 Assisting EPS-Bearer与第二 RB的绑定,由于 DRB1 和 DRB2实际对应在 PCell和 SCell中, 而数据流对应在 Default EPS-Bearer 和 Assisting EPS-Bearer中,交换 EPS-Bearer和 DRB的绑定关系可以实现数据 在 PCell或者 SCell中传输。 特別是考虑到如果上行数据流只从一条通路发数 据流的情况,通过这种交换可以实现上行数据流在 PCell或者 SCell中的切换。 Through the above configuration, the binding of the Assisting EPS-Bearer to the second RB is implemented. The DRB1 and the DRB2 actually correspond to the PCell and the SCell, and the data flow corresponds to the Default EPS-Bearer. In the Assisting EPS-Bearer, the binding relationship between the EPS-Bearer and the DRB can be exchanged between the PCell or the SCell. In particular, it is considered that if the upstream data stream only sends data streams from one path, the switching of the upstream data stream in the PCell or SCell can be realized by such switching.
需要说明的是, 对于前述的各方法实施例, 为了筒单描述, 故将其都表述 为一系列的动作组合, 但是本领域技术人员应该知悉, 本发明并不受所描述 的动作顺序的限制, 因为依据本发明, 某些步骤可以采用其他顺序或者同 时进行。 其次, 本领域技术人员也应该知悉, 说明书中所描述的实施例均 属于优选实施例, 所涉及的动作和模块并不一定是本发明所必须的。  It should be noted that, for the foregoing method embodiments, they are all described as a series of action combinations for the description of the device, but those skilled in the art should understand that the present invention is not limited by the described action sequence. Because certain steps may be performed in other orders or concurrently in accordance with the present invention. In the following, those skilled in the art should also understand that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.
为便于更好的实施本发明实施例的上述方案, 下面还提供用于实施上 述方案的相关装置。  In order to facilitate the better implementation of the above described embodiments of the embodiments of the present invention, related apparatus for implementing the above schemes are also provided below.
请参阅图 6所示, 本发明实施例提供的一种 UE600, 可以包括: 第一单元 601、 第二单元 602、 第三单元 603, 其中,  Referring to FIG. 6, a UE 600 according to an embodiment of the present invention may include: a first unit 601, a second unit 602, and a third unit 603, where
第一单元 601用于接收主基站 PeNB发送的辅配置信息,所述辅配置信息 包括辅基站 SeNB在辅小区 SCell中为所述 UE分配的第二数据无线承载 DRB 的信息, 所述 SeNB管理所述 SCell, 所述 SCell为所述 UE的辅小区;  The first unit 601 is configured to receive the secondary configuration information sent by the primary base station PeNB, where the secondary configuration information includes information about the second data radio bearer DRB allocated by the secondary base station SeNB to the UE in the secondary cell SCell, where the SeNB management office An SCell, where the SCell is a secondary cell of the UE;
第二单元 602用于绑定第一演进型分组网络承载 EPS-Bearer和所述第二 DRB, 其中, 所述第一 EPS-Bearer在与所述第二 DRB绑定之前与第一 DRB 绑定,所述第一 DRB为所述 PeNB在主小区 PCell中为所述 UE分配的数据无 线承载, 所述 PeNB管理所述 PCell, 所述 PCell为所述 UE的主小区;  The second unit 602 is configured to bind the first evolved packet network bearer EPS-Bearer and the second DRB, where the first EPS-Bearer is bound to the first DRB before being bound to the second DRB. The first DRB is a data radio bearer allocated by the PeNB to the UE in the primary cell PCell, the PeNB manages the PCell, and the PCell is a primary cell of the UE;
第三单元 603用于使用与所述第一 EPS-Bearer绑定的第二 DRB传输数据 流。  The third unit 603 is configured to transmit the data stream using the second DRB bound to the first EPS-Bearer.
在本发明的一些实施例中, 所述第一单元 601还用于: 接收所述 PeNB发 送的主配置信息, 所述主配置信息包括所述第一 DRB的信息;  In some embodiments of the present invention, the first unit 601 is further configured to: receive primary configuration information sent by the PeNB, where the primary configuration information includes information of the first DRB;
所述第二单元 602还用于: 绑定所述第一 EPS-Bearer与所述第一 DRB。 在本发明的一些实施例中, 所述第一单元 601具体用于: 接收所述 PeNB 发送的无线资源控制协议 RRC重配置消息,所述 RRC重配置消息携带有第二 DRB的无线承载标识 RB ID和第一 EPS-Bearer的标识 ID, 所述 RRC重配置 消息还携带全配置 Full Config参数, 所述 Full Config参数用于指示所述 UE 绑定第一 EPS-Bearer和第二 DRB;  The second unit 602 is further configured to: bind the first EPS-Bearer and the first DRB. In some embodiments of the present invention, the first unit 601 is specifically configured to: receive a radio resource control protocol RRC reconfiguration message sent by the PeNB, where the RRC reconfiguration message carries a radio bearer identifier RB of the second DRB. An ID and an identifier of the first EPS-Bearer, the RRC reconfiguration message further carrying a full configuration Full Config parameter, where the Full Config parameter is used to indicate that the UE binds the first EPS-Bearer and the second DRB;
所述第二单元 602具体用于:在获取到所述 RRC重配置消息中 Full Config 参数之后,在非接入 NAS层中建立所述第一 EPS-Bearer的 ID与所述第二 DRB 的 RB ID之间的映射关系。 The second unit 602 is specifically configured to: when the RRC reconfiguration message is obtained, Full Config After the parameter, the mapping relationship between the ID of the first EPS-Bearer and the RB ID of the second DRB is established in the non-access NAS layer.
在本发明的一些实施例中, 当所述 SeNB通过所述第二 DRB发送第一下 行数据流时,所述第三单元 603具体用于:通过所述第二 DRB接收所述 SeNB 发送的第一下行数据流;  In some embodiments of the present invention, when the SeNB sends the first downlink data stream by using the second DRB, the third unit 603 is specifically configured to: receive, by using the second DRB, the SeNB, First downlink data stream;
所述第三单元 603还用于:在所述 UE通过所述第二 DRB接收所述 SeNB 发送的第一下行数据流时,若所述 PeNB通过第三 DRB发送第二下行数据流, 所述 UE通过所述第三 DRB接收所述 PeNB发送的第二下行数据流, 所述第 三 DRB与第二 EPS-Bearer绑定,所述第三 DRB为所述 PeNB在 PCell中为所 述 UE分配的数据无线承载;  The third unit 603 is further configured to: when the UE receives the first downlink data stream sent by the SeNB by using the second DRB, if the PeNB sends the second downlink data stream by using the third DRB, Receiving, by the third DRB, the second downlink data stream that is sent by the PeNB, where the third DRB is bound to the second EPS-Bearer, and the third DRB is that the PeNB is the UE in the PCell. Allocated data radio bearer;
其中, 所述第一下行数据流和所述第二下行数据流为统一控制节点 SRC 对从服务网关 SGW接收到的数据流进行分流得到, 或所述第一下行数据流和 所述第二下行数据流为所述 PeNB对从所述 SGW接收到的数据流进行分流得 到。  The first downlink data stream and the second downlink data stream are obtained by the unified control node SRC offloading the data stream received from the serving gateway SGW, or the first downlink data stream and the first The two downlink data flows are obtained by the PeNB offloading the data stream received from the SGW.
在本发明的一些实施例中,所述数据流为所述 UE需要发送的上行数据流, 所述第三单元 603 具体用于: 通过所述第一 EPS-Bearer 确定与所述第一 EPS-Bearer绑定的第二 DRB; 将需要发送的上行数据流通过所述第二 DRB发 送给所述 SeNB, 由所述 SeNB将所述需要发送的上行数据流发送给 SRC或 SGW。  In some embodiments of the present invention, the data stream is an uplink data stream that the UE needs to send, and the third unit 603 is specifically configured to: determine, by the first EPS-Bearer, the first EPS- The second DRB to which the bearer is bound is sent to the SeNB by the second DRB, and the uplink data stream that needs to be sent is sent by the SeNB to the SRC or the SGW.
在本发明的一些实施例中, 所述第一单元 601接收到的所述第二 DRB由 所述 SeNB在所述 SCell中为所述 UE建立, 且所述第二 DRB的信息由所述 PeNB从所述 SeNB获取到并携带在所述辅配置信息中发送给所述 UE。  In some embodiments of the present invention, the second DRB received by the first unit 601 is established by the SeNB in the SCell for the UE, and the information of the second DRB is used by the PeNB. Obtained from the SeNB and carried in the secondary configuration information and sent to the UE.
在本发明的一些实施例中,所述第二单元 602使用的所述第一 EPS-Bearer 为默认演进型分组网络承载 Default EPS-Bearer, 或专用演进型分组网络承载 Dedicated EPS-Bearer。  In some embodiments of the present invention, the first EPS-Bearer used by the second unit 602 is a default evolved packet network bearer Default EPS-Bearer, or a dedicated evolved packet network bearer Dedicated EPS-Bearer.
在本发明的一些实施例中,所述第二单元 602使用的所述第一 EPS-Bearer 为辅助演进型分组网络承载 Assisting EPS-Bearer;  In some embodiments of the present invention, the first EPS-Bearer used by the second unit 602 is an assisted evolved packet network bearer Assisting EPS-Bearer;
所述 Assisting EPS-Bearer是由移动管理实体 MME触发建立,或者由核心 网中的 PGW触发建立, 或者由所述 UE触发建立的 EPS-Bearer。  The Assisting EPS-Bearer is triggered by the mobility management entity MME, or triggered by the PGW in the core network, or triggered by the UE to establish the EPS-Bearer.
综上如图 6所示的实施例可知,首先第一单元接收到 PeNB发送的辅配置 信息, 该辅配置信息包括有 SeNB在辅小区中为 UE分配的第二 DRB, 然后第 二单元绑定第一 EPS-Bearer和第二 DRB, 而第一 EPS-Bearer在与第二 DRB 绑定之前与第一 DRB绑定, 绑定第一 EPS-Bearer与第二 DRB之后, 第三单 元使用与第一 EPS-Bearer绑定的第二 DRB传输数据流。由于第二 DRB是 SeNB 在 SCell中为 UE分配的数据无线承载, 第一 EPS-Bearer与第二 DRB进行了 绑定, 而第一 EPS-Bearer在与第二 DRB绑定之前与第一 DRB绑定, 故本发 明实施例中, 第一 EPS-Bearer仍然与 DRB之间建立——对应关系, 但是对应 于不同的时间段, 第一 EPS-Bearer可以与不同的 DRB绑定, 例如 UE在接收 到辅配置信息之前第一 EPS-Bearer和第一 DRB绑定, 但是接收到辅配置信息 之后第一 EPS-Bearer和第二 DRB绑定, 可见本发明实施例中在接收到辅配置 信息之后 UE 可以对第一 EPS-Bearer 进行重新绑定, 从而可以将第一 EPS-Bearer和第一 DRB的绑定改变为第一 EPS-Bearer和第二 DRB的绑定, 通过绑定关系的改变,可以建立第一 EPS-Bearer和第二 DRB之间的映射关系, 故 UE可以使用与第一 EPS-Bearer绑定的第二 DRB来传输数据流, UE能够 使用第二 DRB传输数据流, 也就实现了 UE和 SeNB之间传输数据流, 由于 UE可以在不同的时间段绑定第一 EPS-Bearer与不同的 DRB ,故可以对使用哪 个 DRB来传输数据流进行灵活选择, 满足异站点间的负载均衡, 提高用户吞 吐率和资源利用率。 As shown in the embodiment shown in FIG. 6, first, the first unit receives the secondary configuration sent by the PeNB. Information, the secondary configuration information includes a second DRB allocated by the SeNB for the UE in the secondary cell, and then the second unit is bound to the first EPS-Bearer and the second DRB, and the first EPS-Bearer is bound to the second DRB. Before being bound to the first DRB, after binding the first EPS-Bearer and the second DRB, the third unit transmits the data stream using the second DRB bound to the first EPS-Bearer. The first EPS-Bearer is bound to the second DRB, and the first EPS-Bearer is bound to the first DRB before being bound to the second DRB, because the second DRB is the data radio bearer allocated by the SeNB to the UE in the SCell. Therefore, in the embodiment of the present invention, the first EPS-Bearer still establishes a corresponding relationship with the DRB, but corresponding to different time segments, the first EPS-Bearer may be bound to different DRBs, for example, the UE is receiving. The first EPS-Bearer is bound to the first DRB before the secondary configuration information, but after the secondary configuration information is received, the first EPS-Bearer is bound to the second DRB, and the UE is visible after receiving the secondary configuration information in the embodiment of the present invention. The first EPS-Bearer may be re-bound, so that the binding of the first EPS-Bearer and the first DRB may be changed to the binding of the first EPS-Bearer and the second DRB, and the binding relationship may be changed. Establishing a mapping relationship between the first EPS-Bearer and the second DRB, so that the UE can use the second DRB bound to the first EPS-Bearer to transmit the data stream, and the UE can use the second DRB to transmit the data stream, thereby implementing The data stream is transmitted between the UE and the SeNB, because the UE can The first binding EPS-Bearer different DRB at different time periods, it is possible to use DRB to which the transport stream flexible options to meet different load balancing across the site, user throughput and improve resource utilization.
请参阅图 7-a所示, 本发明实施例提供的一种 PeNB700, 可以包括: 第一 单元 701、 第二单元 702, 其中,  Referring to FIG. 7-a, a PeNB 700 according to an embodiment of the present invention may include: a first unit 701 and a second unit 702, where
第一单元 701用于获取辅基站 SeNB在辅小区 SCell中为用户设备 UE分 配的第二数据无线承载 DRB的信息, 所述 SeNB管理所述 SCell, 所述 SCell 为所述 UE的辅小区;  The first unit 701 is configured to acquire information about a second data radio bearer DRB allocated by the SeNB in the secondary cell SCell for the user equipment UE, where the SeNB manages the SCell, and the SCell is a secondary cell of the UE;
第二单元 702用于向所述 UE发送辅配置信息,所述辅配置信息包括所述 第二 DRB的信息;  The second unit 702 is configured to send secondary configuration information to the UE, where the secondary configuration information includes information of the second DRB.
其中, 所述第二 DRB 用于所述 UE 绑定第一演进型分组网络承载 EPS-Bearer和所述第二 DRB , 以根据所述第二 DRB与所述 SeNB之间传输数 据流。  The second DRB is used by the UE to bind the first evolved packet network bearer EPS-Bearer and the second DRB to transmit a data stream according to the second DRB and the SeNB.
在本发明的一些实施例中, 请参阅如图 7-b所示, PeNB700, 还包括: 第 三单元 703, 其中, 所述第三单元 703用于: 所述获取模块获取辅基站 SeNB在辅小区 SCell 中为用户设备 UE分配的第二数据无线承载 DRB的信息之前,在主小区 PCell 中为所述 UE分配第一 DRB, 所述 PeNB管理所述 PCell, 所述 PCell为所述 UE的主小区; In some embodiments of the present invention, as shown in FIG. 7-b, the PeNB 700 further includes: a third unit 703, where The third unit 703 is configured to: after the acquiring, the information about the second data radio bearer DRB allocated by the secondary base station SeNB for the user equipment UE in the secondary cell SCell, the first unit is allocated to the UE in the primary cell PCell. a DRB, the PeNB manages the PCell, and the PCell is a primary cell of the UE;
所述第二单元 702还用于: 向所述 UE发送所述主配置信息, 所述主配置 信息包括: 所述第一 DRB的信息;  The second unit 702 is further configured to: send the primary configuration information to the UE, where the primary configuration information includes: information about the first DRB;
其中, 所述第一 DRB用于所述 UE在绑定所述第一 EPS-Bearer和所述第 二 DRB之前, 绑定所述第一 EPS-Bearer和所述第一 DRB。  The first DRB is used by the UE to bind the first EPS-Bearer and the first DRB before binding the first EPS-Bearer and the second DRB.
在本发明的一些实施例中,所述第二单元 702发送的所述辅配置信息用于 指示所述 UE解除所述第一 EPS-Bearer与所述第一 DRB的绑定, 并绑定所述 第一 EPS-Bearer与所述第二 DRB。  In some embodiments of the present invention, the secondary configuration information sent by the second unit 702 is used to instruct the UE to release the binding of the first EPS-Bearer and the first DRB, and bind the binding The first EPS-Bearer and the second DRB are described.
在本发明的一些实施例中, 所述第一单元 701具体用于: 接收所述 SeNB 发送的所述第二 DRB 的信息; 或, 接收统一控制节点 SRC发送的所述第二 DRB的信息, 所述第二 DRB的信息由所述 SeNB发送给所述 SRC。  In some embodiments of the present invention, the first unit 701 is specifically configured to: receive information about the second DRB sent by the SeNB; or receive information about the second DRB sent by the unified control node SRC, The information of the second DRB is sent by the SeNB to the SRC.
在本发明的一些实施例中,所述第二 DRB的信息为所述第二 DRB的无线 承载标识 RB ID; 所述辅配置信息为无线资源控制协议 RRC重配置消息; 所述第二单元 702具体用于: 发送所述 RRC重配置消息, 所述 RRC重配 置消息携带有第二 DRB的 RB ID和第一 EPS-Bearer的标识 ID, 所述 RRC重 配置消息还携带全配置 Full Config参数, 所述 Full Config参数用于指示所述 UE绑定第一 EPS-Bearer和第二 DRB。  In some embodiments of the present invention, the information of the second DRB is a radio bearer identifier RB ID of the second DRB; the secondary configuration information is a radio resource control protocol RRC reconfiguration message; Specifically, the RRC reconfiguration message is sent, where the RRC reconfiguration message carries the RB ID of the second DRB and the identifier of the first EPS-Bearer, and the RRC reconfiguration message also carries the fully configured Full Config parameter. The Full Config parameter is used to instruct the UE to bind the first EPS-Bearer and the second DRB.
在本发明的一些实施例中,请参阅如图 7-c所示,相对于图 7-a, PeNB700, 还包括: 第四单元 704和第五单元 705, 其中,  In some embodiments of the present invention, as shown in FIG. 7-c, with respect to FIG. 7-a, the PeNB 700 further includes: a fourth unit 704 and a fifth unit 705, where
所述第四单元 704用于: 所述第二单元向所述 UE发送辅配置信息之后, 接收所述 SGW发送的数据流;  The fourth unit 704 is configured to: after the second unit sends the secondary configuration information to the UE, receive the data stream sent by the SGW;
所述第五单元 705用于:将所述数据流分流为第一下行数据流和第二下行 数据流;  The fifth unit 705 is configured to: offload the data stream into a first downlink data stream and a second downlink data stream;
所述第二单元 702还用于:将所述第一下行数据流经由所述 SeNB发送给 所述 UE, 其中, 所述 SeNB与所述 UE之间传输所述第一下行数据流的承载 为所述第二 DRB;  The second unit 702 is further configured to send the first downlink data stream to the UE by using the SeNB, where the SeNB and the UE transmit the first downlink data stream. Carrying the second DRB;
所述第二单元 702还用于: 通过第三 DRB向所述 UE发送所述第二下行 数据流,所述第三 DRB为所述 PeNB在 PCell中为所述 UE分配的数据无线承 载。 The second unit 702 is further configured to: send the second downlink to the UE by using a third DRB a data stream, where the third DRB is a data radio bearer allocated by the PeNB to the UE in the PCell.
由以上实施例的描述可知, 第一单元获取到第二 DRB的信息, 第二单元 向 UE发送辅配置信息, 该辅配置信息包括有 SeNB在辅小区中为 UE分配的 第二 DRB , 则 UE绑定第一 EPS-Bearer和第二 DRB, 而第一 EPS-Bearer在与 第二 DRB绑定之前与第一 DRB绑定,绑定第一 EPS-Bearer与第二 DRB之后, UE使用与第一 EPS-Bearer绑定的第二 DRB传输数据流。 由于第二 DRB是 SeNB在 SCell中为 UE分配的数据无线承载,第一 EPS-Bearer与第二 DRB进 行了绑定, 而第一 EPS-Bearer在与第二 DRB绑定之前与第一 DRB绑定, 故 本发明实施例中, 第一 EPS-Bearer仍然与 DRB之间建立——对应关系, 但是 对应于不同的时间段, 第一 EPS-Bearer可以与不同的 DRB绑定, 例如 UE在 接收到辅配置信息之前第一 EPS-Bearer和第一 DRB绑定, 但是接收到辅配置 信息之后第一 EPS-Bearer和第二 DRB绑定, 可见本发明实施例中在接收到辅 配置信息之后 UE 可以对第一 EPS-Bearer 进行重新绑定, 从而可以将第一 EPS-Bearer和第一 DRB的绑定改变为第一 EPS-Bearer和第二 DRB的绑定, 通过绑定关系的改变,可以建立第一 EPS-Bearer和第二 DRB之间的映射关系, 故 UE可以使用与第一 EPS-Bearer绑定的第二 DRB来传输数据流, UE能够 使用第二 DRB传输数据流, 也就实现了 UE和 SeNB之间传输数据流, 由于 UE可以在不同的时间段绑定第一 EPS-Bearer与不同的 DRB ,故可以对使用哪 个 DRB来传输数据流进行灵活选择, 满足异站点间的负载均衡, 提高用户吞 吐率和资源利用率。  As can be seen from the description of the foregoing embodiment, the first unit acquires the information of the second DRB, and the second unit sends the secondary configuration information to the UE, where the secondary configuration information includes the second DRB allocated by the SeNB to the UE in the secondary cell, and the UE Binding the first EPS-Bearer and the second DRB, and the first EPS-Bearer is bound to the first DRB before being bound to the second DRB, and after binding the first EPS-Bearer and the second DRB, the UE uses and An EPS-Bearer-bound second DRB transport stream. The first EPS-Bearer is bound to the second DRB, and the first EPS-Bearer is bound to the first DRB before being bound to the second DRB, because the second DRB is the data radio bearer allocated by the SeNB to the UE in the SCell. Therefore, in the embodiment of the present invention, the first EPS-Bearer still establishes a corresponding relationship with the DRB, but corresponding to different time segments, the first EPS-Bearer may be bound to different DRBs, for example, the UE is receiving. The first EPS-Bearer is bound to the first DRB before the secondary configuration information, but after the secondary configuration information is received, the first EPS-Bearer is bound to the second DRB, and the UE is visible after receiving the secondary configuration information in the embodiment of the present invention. The first EPS-Bearer may be re-bound, so that the binding of the first EPS-Bearer and the first DRB may be changed to the binding of the first EPS-Bearer and the second DRB, and the binding relationship may be changed. Establishing a mapping relationship between the first EPS-Bearer and the second DRB, so that the UE can use the second DRB bound to the first EPS-Bearer to transmit the data stream, and the UE can use the second DRB to transmit the data stream, thereby implementing UE and SeNB The data stream is transmitted. Since the UE can bind the first EPS-Bearer and different DRBs in different time periods, it can flexibly select which DRB to use to transmit the data stream, meet the load balancing between different sites, and improve user throughput. Rate and resource utilization.
本发明实施例还提供一种计算机存储介质, 其中, 该计算机存储介质存储 有程序, 该程序执行包括上述方法实施例中记载的部分或全部布置。  The embodiment of the present invention further provides a computer storage medium, wherein the computer storage medium stores a program, and the program execution includes some or all of the arrangements described in the foregoing method embodiments.
接下来介绍本发明实施例提供的另一种 UE, 请参阅图 8所示, 用户设备 800包括:  Next, another UE provided by the embodiment of the present invention is introduced. Referring to FIG. 8, the user equipment 800 includes:
输入装置 801、输出装置 802、处理器 803和存储器 804 (其中用户设备 800 中的处理器 803的数量可以一个或多个, 图 8中以一个处理器为例)。 在本发 明的一些实施例中, 输入装置 801、 输出装置 802、 处理器 803和存储器 804 可通过总线或其它方式连接, 其中, 图 8中以通过总线连接为例。  The input device 801, the output device 802, the processor 803, and the memory 804 (wherein the number of processors 803 in the user device 800 may be one or more, and one processor in Fig. 8 is taken as an example). In some embodiments of the present invention, the input device 801, the output device 802, the processor 803, and the memory 804 may be connected by a bus or other means, wherein the bus connection is taken as an example in FIG.
其中, 存储器 804, 用于存储指令和数据。 处理器 803 , 用于执行如下步骤: The memory 804 is used to store instructions and data. The processor 803 is configured to perform the following steps:
通过所述输入装置接收主基站 PeNB发送的辅配置信息,所述辅配置信息 包括辅基站 SeNB在辅小区 SCell中为所述 UE分配的第二数据无线承载 DRB 的信息, 所述 SeNB管理所述 SCell, 所述 SCell为所述 UE的辅小区;  Receiving, by the input device, the secondary configuration information sent by the primary base station PeNB, where the secondary configuration information includes information about a second data radio bearer DRB allocated by the secondary base station SeNB to the UE in the secondary cell SCell, where the SeNB manages the SCell, the SCell is a secondary cell of the UE;
绑定第一演进型分组网络承载 EPS-Bearer和所述第二 DRB, 其中, 所述 第一 EPS-Bearer在与所述第二 DRB绑定之前与第一 DRB绑定 ,所述第一 DRB 为所述 PeNB在主小区 PCell中为所述 UE分配的数据无线承载, 所述 PeNB 管理所述 PCell, 所述 PCell为所述 UE的主小区;  Binding the first evolved packet network bearer EPS-Bearer and the second DRB, where the first EPS-Bearer is bound to the first DRB before being bound to the second DRB, the first DRB For the data radio bearer allocated by the PeNB to the UE in the primary cell PCell, the PeNB manages the PCell, and the PCell is a primary cell of the UE;
通过所述输出装置使用与所述第一 EPS-Bearer绑定的第二 DRB传输数据 流。  A data stream is transmitted by the output device using a second DRB bound to the first EPS-Bearer.
在本发明的一些实施例中, 所述处理器 803, 还用于执行以下步骤: 绑定 第一 EPS-Bearer和所述第二 DRB之前, 通过所述输入装置接收所述 PeNB发 送的主配置信息, 所述主配置信息包括所述第一 DRB的信息; 绑定所述第一 EPS-Bearer与所述第一 DRB。  In some embodiments of the present invention, the processor 803 is further configured to: perform, after binding the first EPS-Bearer and the second DRB, receive, by using the input device, a primary configuration sent by the PeNB Information, the primary configuration information includes information of the first DRB, and the first EPS-Bearer is bound to the first DRB.
在本发明的一些实施例中, 所述处理器 803, 具体用于执行以下步骤: 通过所述输入装置接收所述 PeNB发送的无线资源控制协议 RRC重配置 消息, 所述 RRC重配置消息携带有第二 DRB的无线承载标识 RB ID和第一 EPS-Bearer的标识 ID , 所述 RRC重配置消息还携带全配置 Full Config参数, 所述 Full Config参数用于指示所述 UE绑定第一 EPS-Bearer和第二 DRB;  In some embodiments of the present invention, the processor 803 is specifically configured to: receive, by using the input device, a radio resource control protocol RRC reconfiguration message sent by the PeNB, where the RRC reconfiguration message carries a radio bearer identifier RB ID of the second DRB and an identifier ID of the first EPS-Bearer, where the RRC reconfiguration message further carries a fully configured Full Config parameter, where the Full Config parameter is used to indicate that the UE is bound to the first EPS- Bearer and second DRB;
在获取到所述 RRC重配置消息中 Full Config参数之后, 在非接入 NAS 层中建立所述第一 EPS-Bearer的 ID与所述第二 DRB的 RB ID之间的映射关 系。  After obtaining the Full Config parameter in the RRC reconfiguration message, the mapping relationship between the ID of the first EPS-Bearer and the RB ID of the second DRB is established in the non-access NAS layer.
在本发明的一些实施例中, 所述处理器 803, 具体用于执行以下步骤: 当所述 SeNB通过所述第二 DRB发送第一下行数据流时, 使用所述输入 装置通过所述第二 DRB接收所述 SeNB发送的第一下行数据流;  In some embodiments of the present invention, the processor 803 is specifically configured to: when the SeNB sends the first downlink data stream by using the second DRB, using the input device to pass the Receiving, by the second DRB, the first downlink data stream sent by the SeNB;
在所述 UE通过所述第二 DRB接收所述 SeNB发送的第一下行数据流时, 若所述 PeNB通过第三 DRB发送第二下行数据流, 使用所述输入装置通过所 述第三 DRB接收所述 PeNB发送的第二下行数据流, 所述第三 DRB与第二 EPS-Bearer绑定,所述第三 DRB为所述 PeNB在 PCell中为所述 UE分配的数 据无线承载; 其中, 所述第一下行数据流和所述第二下行数据流为统一控制节点 SRC 对从服务网关 SGW接收到的数据流进行分流得到, 或所述第一下行数据流和 所述第二下行数据流为所述 PeNB对从所述 SGW接收到的数据流进行分流得 到。 And when the UE receives the first downlink data stream sent by the SeNB by using the second DRB, if the PeNB sends the second downlink data stream by using the third DRB, using the input device to pass the third DRB. And receiving, by the PeNB, a second downlink data stream, where the third DRB is bound to a second EPS-Bearer, where the third DRB is a data radio bearer allocated by the PeNB to the UE in the PCell; The first downlink data stream and the second downlink data stream are obtained by the unified control node SRC offloading the data stream received from the serving gateway SGW, or the first downlink data stream and the first The two downlink data flows are obtained by the PeNB offloading the data stream received from the SGW.
在本发明的一些实施例中, 所述处理器 803, 具体用于执行以下步骤: 通过所述第一 EPS-Bearer确定与所述第一 EPS-Bearer绑定的第二 DRB; 通过所述输入装置将需要发送的上行数据流通过所述第二 DRB发送给所 述 SeNB, 由所述 SeNB将所述需要发送的上行数据流发送给 SRC或 SGW。  In some embodiments of the present invention, the processor 803 is specifically configured to: perform, by using the first EPS-Bearer, a second DRB that is bound to the first EPS-Bearer; The device sends the uplink data stream that needs to be sent to the SeNB by using the second DRB, and the SeNB sends the uplink data stream that needs to be sent to the SRC or the SGW.
在本发明的一些实施例中, 所述存储器 804存储的所述第二 DRB由所述 SeNB在所述 SCell中为所述 UE建立, 且所述第二 DRB的信息由所述 PeNB 从所述 SeNB获取到并携带在所述辅配置信息中发送给所述 UE。  In some embodiments of the present invention, the second DRB stored by the memory 804 is established by the SeNB for the UE in the SCell, and information of the second DRB is used by the PeNB from the The SeNB acquires and carries the information in the secondary configuration information and sends the information to the UE.
在本发明的一些实施例中, 所述存储器 804存储的所述第一 EPS-Bearer 为默认演进型分组网络承载 Default EPS-Bearer, 或专用演进型分组网络承载 Dedicated EPS-Bearer。  In some embodiments of the present invention, the first EPS-Bearer stored in the memory 804 is a default evolved packet network bearer Default EPS-Bearer, or a dedicated evolved packet network bearer Dedicated EPS-Bearer.
在本发明的一些实施例中, 所述存储器 804存储的所述第一 EPS-Bearer 为辅助演进型分组网络承载 Assisting EPS-Bearer;  In some embodiments of the present invention, the first EPS-Bearer stored by the memory 804 is an assisted evolved packet network bearer Assisting EPS-Bearer;
所述 Assisting EPS-Bearer是由移动管理实体 MME触发建立,或者由核心 网中的 PGW触发建立, 或者由所述 UE触发建立的 EPS-Bearer。  The Assisting EPS-Bearer is triggered by the mobility management entity MME, or triggered by the PGW in the core network, or triggered by the UE to establish the EPS-Bearer.
接下来介绍本发明实施例提供的另一种 PeNB,请参阅图 9所示, PeNB900 包括:  Next, another PeNB provided by the embodiment of the present invention is introduced. Referring to FIG. 9, the PeNB 900 includes:
输入装置 901、 输出装置 902、 处理器 903和存储器 904 (其中 PeNB900 中的处理器 903的数量可以一个或多个, 图 9中以一个处理器为例)。 在本发 明的一些实施例中, 输入装置 901、 输出装置 902、 处理器 903和存储器 904 可通过总线或其它方式连接, 其中, 图 9中以通过总线连接为例。  The input device 901, the output device 902, the processor 903, and the memory 904 (wherein the number of processors 903 in the PeNB 900 may be one or more, and one processor in FIG. 9 is taken as an example). In some embodiments of the present invention, the input device 901, the output device 902, the processor 903, and the memory 904 may be connected by a bus or other means, wherein the bus connection is taken as an example in FIG.
其中, 存储器 904, 用于存储指令和数据。  The memory 904 is configured to store instructions and data.
处理器 903 , 用于执行如下步骤:  The processor 903 is configured to perform the following steps:
通过所述输入装置获取辅基站 SeNB在辅小区 SCell中为用户设备 UE分 配的第二数据无线承载 DRB的信息, 所述 SeNB管理所述 SCell, 所述 SCell 为所述 UE的辅小区;  Obtaining, by the input device, the information of the second data radio bearer DRB allocated by the SeNB in the secondary cell SCell for the user equipment UE, where the SeNB manages the SCell, where the SCell is a secondary cell of the UE;
通过所述输出装置向所述 UE发送辅配置信息,所述辅配置信息包括所述 第二 DRB的信息; Sending secondary configuration information to the UE by using the output device, where the secondary configuration information includes the Information of the second DRB;
其中, 所述第二 DRB 用于所述 UE 绑定第一演进型分组网络承载 EPS-Bearer和所述第二 DRB , 以根据所述第二 DRB与所述 SeNB之间传输数 据流。  The second DRB is used by the UE to bind the first evolved packet network bearer EPS-Bearer and the second DRB to transmit a data stream according to the second DRB and the SeNB.
在本发明的一些实施例中, 所述处理器 903, 还用于执行以下步骤: 获取辅基站 SeNB在辅小区 SCell中为用户设备 UE分配的第二数据无线 承载 DRB之前, 在主小区 PCell中为所述 UE分配第一 DRB, 所述 PeNB管 理所述 PCell, 所述 PCell为所述 UE的主小区;  In some embodiments of the present invention, the processor 903 is further configured to: obtain the second data radio bearer DRB allocated by the secondary base station SeNB for the user equipment UE in the secondary cell SCell, in the primary cell PCell Allocating a first DRB to the UE, the PeNB managing the PCell, where the PCell is a primary cell of the UE;
通过所述输出装置向所述 UE发送所述主配置信息,所述主配置信息包括: 所述第一 DRB的信息;  And sending, by the output device, the primary configuration information to the UE, where the primary configuration information includes: information about the first DRB;
其中, 所述第一 DRB用于所述 UE在绑定所述第一 EPS-Bearer和所述第 二 DRB之前, 绑定所述第一 EPS-Bearer和所述第一 DRB。  The first DRB is used by the UE to bind the first EPS-Bearer and the first DRB before binding the first EPS-Bearer and the second DRB.
在本发明的一些实施例中, 所述处理器 903, 具体用于执行以下步骤: 通过所述输入装置接收所述 SeNB发送的所述第二 DRB的信息; 或, 通 过所述输入装置接收统一控制节点 SRC发送的所述第二数据无线承载的信 息, 所述第二数据无线承载由所述 SeNB发送给所述 SRC。  In some embodiments of the present invention, the processor 903 is specifically configured to: receive, by the input device, information about the second DRB sent by the SeNB; or receive a unified by using the input device. And controlling information about the second data radio bearer sent by the node SRC, where the second data radio bearer is sent by the SeNB to the SRC.
在本发明的一些实施例中, 所述存储器 904存储的所述第二 DRB的信息 为所述第二 DRB的无线承载标识 RB ID; 所述辅配置信息为无线资源控制协 议 RRC重配置消息;  In some embodiments of the present invention, the information of the second DRB that is stored by the memory 904 is a radio bearer identifier RB ID of the second DRB, and the secondary configuration information is a radio resource control protocol RRC reconfiguration message.
所述处理器 903, 具体用于执行以下步骤:  The processor 903 is specifically configured to perform the following steps:
通过所述输出装置发送所述 RRC重配置消息,所述 RRC重配置消息携带 有第二 DRB的 RB ID和第一 EPS-Bearer的标识 ID, 所述 RRC重配置消息还 携带全配置 Full Config参数,所述 Full Config参数用于指示所述 UE绑定第一 EPS-Bearer和第二 DRB。  The RRC reconfiguration message is sent by the output device, where the RRC reconfiguration message carries the RB ID of the second DRB and the identifier of the first EPS-Bearer, and the RRC reconfiguration message also carries the fully configured Full Config parameter. The Full Config parameter is used to indicate that the UE binds the first EPS-Bearer and the second DRB.
在本发明的一些实施例中, 所述处理器 903, 还用于执行以下步骤: 向所 述 UE发送辅配置信息之后, 所述 PeNB接收所述 SGW发送的数据流;  In some embodiments of the present invention, the processor 903 is further configured to: after transmitting the secondary configuration information to the UE, the PeNB receives the data stream sent by the SGW;
将所述数据流分流为第一下行数据流和第二下行数据流;  Diverting the data stream into a first downlink data stream and a second downlink data stream;
通过所述输出装置将所述第一下行数据流经由所述 SeNB发送给所述 UE, 其中, 所述 SeNB与所述 UE之间传输所述第一下行数据流的承载为所述第二 DRB; 通过所述输出装置通过第三 DRB向所述 UE发送所述第二下行数据流, 所述第三 DRB为所述 PeNB在 PCell中为所述 UE分配的数据无线承载。 Transmitting, by the output device, the first downlink data stream to the UE by using the SeNB, where the bearer of the first downlink data stream is transmitted between the SeNB and the UE is the Two DRB; And transmitting, by the output device, the second downlink data stream to the UE by using a third DRB, where the third DRB is a data radio bearer allocated by the PeNB to the UE in the PCell.
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分步骤 是可以通过程序来指令相关的硬件完成,该程序可以存储于一种计算机可读存 储介质中, 上述提到的存储介质可以是只读存储器, 磁盘或光盘等。  A person skilled in the art can understand that all or part of the steps of implementing the above embodiments can be completed by a program to instruct related hardware, and the program can be stored in a computer readable storage medium, and the above mentioned storage medium can be It is a read-only memory, a disk or a disc.
以上对本发明所提供的一种数据传输方法和用户设备以及基站进行了详 细介绍, 对于本领域的一般技术人员, 依据本发明实施例的思想, 在具体实施 方式及应用范围上均会有改变之处, 因此, 本说明书内容不应理解为对本发明 的限制。  The data transmission method, the user equipment, and the base station provided by the present invention are described in detail above. For those skilled in the art, according to the idea of the embodiment of the present invention, the specific implementation manner and the application range may be changed. Therefore, the content of the present specification should not be construed as limiting the invention.

Claims

权 利 要 求 Rights request
1、 一种数据传输方法, 其特征在于, 包括:  A data transmission method, comprising:
用户设备 UE接收主基站 PeNB发送的辅配置信息, 所述辅配置信息包括 辅基站 SeNB在辅小区 SCell中为所述 UE分配的第二数据无线承载 DRB的信 息, 所述 SeNB管理所述 SCell, 所述 SCell为所述 UE的辅小区;  The user equipment UE receives the secondary configuration information sent by the primary base station PeNB, where the secondary configuration information includes information about the second data radio bearer DRB allocated by the secondary base station SeNB to the UE in the secondary cell SCell, where the SeNB manages the SCell, The SCell is a secondary cell of the UE;
所述 UE绑定第一演进型分组网络承载 EPS-Bearer和所述第二 DRB , 其 中, 所述第一 EPS-Bearer在与所述第二 DRB绑定之前与第一 DRB绑定, 所 述第一 DRB为所述 PeNB在主小区 PCell中为所述 UE分配的数据无线承载, 所述 PeNB管理所述 PCell, 所述 PCell为所述 UE的主小区;  The UE is bound to the first evolved packet network bearer EPS-Bearer and the second DRB, where the first EPS-Bearer is bound to the first DRB before being bound to the second DRB, The first DRB is a data radio bearer allocated by the PeNB to the UE in the primary cell PCell, the PeNB manages the PCell, and the PCell is a primary cell of the UE;
所述 UE使用与所述第一 EPS-Bearer绑定的第二 DRB传输数据流。  The UE transmits a data stream using a second DRB bound to the first EPS-Bearer.
2、根据权利要求 1所述的方法,其特征在于,所述 UE绑定第一 EPS-Bearer 和所述第二 DRB之前, 还包括:  The method according to claim 1, wherein before the UE binds the first EPS-Bearer and the second DRB, the method further includes:
所述 UE接收所述 PeNB发送的主配置信息, 所述主配置信息包括所述第 — DRB的信息;  Receiving, by the UE, primary configuration information sent by the PeNB, where the primary configuration information includes information of the first-DRB;
所述 UE绑定所述第一 EPS-Bearer与所述第一 DRB。  The UE binds the first EPS-Bearer to the first DRB.
3、 根据权利要求 1或 2所述的方法, 其特征在于, 所述 UE接收 PeNB 发送的辅配置信息, 包括:  The method according to claim 1 or 2, wherein the receiving, by the UE, the secondary configuration information sent by the PeNB includes:
所述 UE接收所述 PeNB发送的无线资源控制协议 RRC重配置消息, 所 述 RRC重配置消息携带有第二 DRB的无线承载标识 RB ID和第一 EPS-Bearer 的标识 ID, 所述 RRC重配置消息还携带全配置 Full Config参数, 所述 Full Config参数用于指示所述 UE绑定第一 EPS-Bearer和第二 DRB;  Receiving, by the UE, a radio resource control protocol RRC reconfiguration message sent by the PeNB, where the RRC reconfiguration message carries a radio bearer identifier RB ID of the second DRB and an identifier ID of the first EPS-Bearer, where the RRC reconfiguration The message also carries a fully configured Full Config parameter, where the Full Config parameter is used to indicate that the UE binds the first EPS-Bearer and the second DRB;
所述 UE绑定第一 EPS-Bearer和所述第二 DRB , 具体为:  Binding, by the UE, the first EPS-Bearer and the second DRB, specifically:
所述 UE在获取到所述 RRC重配置消息中 Full Config参数之后, 在非接 入 NAS层中建立所述第一 EPS-Bearer的 ID与所述第二 DRB的 RB ID之间的 映射关系。  After obtaining the Full Config parameter in the RRC reconfiguration message, the UE establishes a mapping relationship between the ID of the first EPS-Bearer and the RB ID of the second DRB in the non-access NAS layer.
4、 根据权利要求 1至 3中任一项所述的方法, 其特征在于, 所述 UE使 用与所述第一 EPS-Bearer绑定的第二 DRB传输数据流, 包括:  The method according to any one of claims 1 to 3, wherein the UE uses the second DRB to be combined with the first EPS-Bearer to transmit a data stream, including:
当所述 SeNB通过所述第二 DRB发送第一下行数据流时, 所述 UE通过 所述第二 DRB接收所述 SeNB发送的第一下行数据流;  When the SeNB sends the first downlink data stream by using the second DRB, the UE receives the first downlink data stream sent by the SeNB by using the second DRB;
所述方法还包括: 在所述 UE通过所述第二 DRB接收所述 SeNB发送的第一下行数据流时, 若所述 PeNB通过第三 DRB发送第二下行数据流,所述 UE通过所述第三 DRB 接收所述 PeNB发送的第二下行数据流, 所述第三 DRB与第二 EPS-Bearer绑 定, 所述第三 DRB为所述 PeNB在 PCell中为所述 UE分配的数据无线承载; 其中, 所述第一下行数据流和所述第二下行数据流为统一控制节点 SRC 对从服务网关 SGW接收到的数据流进行分流得到, 或所述第一下行数据流和 所述第二下行数据流为所述 PeNB对从所述 SGW接收到的数据流进行分流得 到。 The method further includes: When the UE receives the first downlink data stream sent by the SeNB by using the second DRB, if the PeNB sends the second downlink data stream by using the third DRB, the UE receives the third DRB through the third DRB. a second downlink data stream that is sent by the PeNB, where the third DRB is bound to a second EPS-Bearer, where the third DRB is a data radio bearer allocated by the PeNB to the UE in the PCell; The first downlink data stream and the second downlink data stream are obtained by the unified control node SRC offloading the data stream received from the serving gateway SGW, or the first downlink data stream and the second downlink data stream. And obtaining, by the PeNB, a data stream received from the SGW.
5、 根据权利要求 1至 3中任一项所述的方法, 其特征在于, 所述数据流 为所述 UE需要发送的上行数据流,所述 UE使用与所述第一 EPS-Bearer绑定 的第二 DRB传输数据流, 包括:  The method according to any one of claims 1 to 3, wherein the data stream is an uplink data stream that the UE needs to send, and the UE uses a binding with the first EPS-Bearer. The second DRB transmits the data stream, including:
所述 UE通过所述第一 EPS-Bearer确定与所述第一 EPS-Bearer绑定的第 二 DRB;  Determining, by the first EPS-Bearer, the second DRB that is bound to the first EPS-Bearer;
所述 UE将需要发送的上行数据流通过所述第二 DRB发送给所述 SeNB, 由所述 SeNB将所述需要发送的上行数据流发送给 SRC或 SGW。  And sending, by the UE, the uplink data stream that needs to be sent to the SeNB by using the second DRB, and sending, by the SeNB, the uplink data stream that needs to be sent to the SRC or the SGW.
6、根据权利要求 1至 5中任一项所述的方法,其特征在于,所述第二 DRB 由所述 SeNB在所述 SCell中为所述 UE建立,且所述第二 DRB的信息由所述 PeNB从所述 SeNB获取到并携带在所述辅配置信息中发送给所述 UE。  The method according to any one of claims 1 to 5, wherein the second DRB is established by the SeNB for the UE in the SCell, and the information of the second DRB is The PeNB is obtained from the SeNB and carried in the secondary configuration information and sent to the UE.
7、 根据权利要求 1 至 6 中任一项所述的方法, 其特征在于, 所述第一 EPS-Bearer为默认演进型分组网络承载 Default EPS-Bearer , 或专用演进型分 组网络承载 Dedicated EPS-Bearer。  The method according to any one of claims 1 to 6, wherein the first EPS-Bearer is a default evolved packet network bearer Default EPS-Bearer, or the dedicated evolved packet network bearer Dedicated EPS- Bearer.
8、 根据权利要求 1 至 6 中任一项所述的方法, 其特征在于, 所述第一 EPS-Bearer为辅助演进型分组网络承载 Assisting EPS-Bearer;  The method according to any one of claims 1 to 6, wherein the first EPS-Bearer is an assisted evolved packet network bearer Assisting EPS-Bearer;
所述 Assisting EPS-Bearer是由移动管理实体 MME触发建立,或者由核心 网中的 PGW触发建立, 或者由所述 UE触发建立的 EPS-Bearer。  The Assisting EPS-Bearer is triggered by the mobility management entity MME, or triggered by the PGW in the core network, or triggered by the UE to establish the EPS-Bearer.
9、 一种数据传输方法, 其特征在于, 包括:  9. A data transmission method, comprising:
主基站 PeNB获取辅基站 SeNB在辅小区 SCell中为用户设备 UE分配的 第二数据无线承载 DRB的信息, 所述 SeNB管理所述 SCell, 所述 SCell为所 述 UE的辅小区;  The primary base station PeNB acquires information of the second data radio bearer DRB allocated by the secondary base station SeNB for the user equipment UE in the secondary cell SCell, the SeNB manages the SCell, and the SCell is a secondary cell of the UE;
所述 PeNB 向所述 UE发送辅配置信息, 所述辅配置信息包括所述第二 DRB的信息; Sending, by the PeNB, secondary configuration information to the UE, where the secondary configuration information includes the second DRB information;
其中, 所述第二 DRB用于与第一演进型分组网络承载 EPS-Bearer绑定, 并用于所述 UE与所述 SeNB之间传输数据流。  The second DRB is configured to be bound to the first evolved packet network bearer EPS-Bearer, and used to transmit a data stream between the UE and the SeNB.
10、 根据权利要求 9所述的方法, 其特征在于, 所述主基站 PeNB获取辅 基站 SeNB在辅小区 SCell中为用户设备 UE分配的第二数据无线承载 DRB的 信息之前, 还包括:  The method according to claim 9, wherein the primary base station PeNB, before acquiring the information of the second data radio bearer DRB allocated by the secondary base station SeNB for the user equipment UE in the secondary cell SCeNB, further includes:
所述 PeNB在主小区 PCell中为所述 UE分配第一 DRB , 所述 PeNB管理 所述 PCell, 所述 PCell为所述 UE的主小区;  The PeNB allocates a first DRB to the UE in the primary cell PCell, the PeNB manages the PCell, and the PCell is a primary cell of the UE;
所述 PeNB向所述 UE发送所述主配置信息, 所述主配置信息包括: 所述 第一 DRB的信息;  The PeNB sends the primary configuration information to the UE, where the primary configuration information includes: information about the first DRB;
其中, 所述第一 DRB用于与所述第一 EPS-Bearer绑定, 并用于所述 UE 与所述 PeNB之间传输数据流。  The first DRB is configured to be bound to the first EPS-Bearer, and used to transmit a data stream between the UE and the PeNB.
11、 根据权利要求 10所述的方法, 其特征在于, 所述辅配置信息用于指 示所述 UE解除所述第一 EPS-Bearer与所述第一 DRB的绑定, 并绑定所述第 一 EPS-Bearer与所述第二 DRB。  The method according to claim 10, wherein the secondary configuration information is used to instruct the UE to release the binding of the first EPS-Bearer and the first DRB, and bind the first An EPS-Bearer and the second DRB.
12、 根据权利要求 9至 11中任一项所述的方法, 其特征在于, 所述主基 站 PeNB获取辅基站 SeNB在辅小区 SCell中为用户设备 UE分配的第二数据 无线承载 DRB的信息, 包括:  The method according to any one of claims 9 to 11, wherein the primary base station PeNB acquires information of a second data radio bearer DRB allocated by the secondary base station SeNB for the user equipment UE in the secondary cell SCell, Includes:
所述 PeNB接收所述 SeNB发送的所述第二 DRB的信息;  Receiving, by the PeNB, information about the second DRB sent by the SeNB;
或, 所述 PeNB接收统一控制节点 SRC发送的所述第二 DRB的信息, 所 述第二 DRB的信息由所述 SeNB发送给所述 SRC。  Or, the PeNB receives the information of the second DRB that is sent by the unified control node SRC, and the information of the second DRB is sent by the SeNB to the SRC.
13、 根据权利要求 9至 12中任一项所述的方法, 其特征在于, 所述第二 DRB的信息为所述第二 DRB的无线承载标识 RB ID; 所述辅配置信息为无线 资源控制协议 RRC重配置消息;  The method according to any one of claims 9 to 12, wherein the information of the second DRB is a radio bearer identifier RB ID of the second DRB, and the auxiliary configuration information is radio resource control. Protocol RRC reconfiguration message;
所述 PeNB向所述 UE发送辅配置信息, 包括:  The sending, by the PeNB, the secondary configuration information to the UE includes:
所述 PeNB发送所述 RRC重配置消息,所述 RRC重配置消息携带有第二 DRB的 RB ID和第一 EPS-Bearer的标识 ID, 所述 RRC重配置消息还携带全 配置 Full Config 参数, 所述 Full Config 参数用于指示所述 UE 绑定第一 EPS-Bearer和第二 DRB。  The PeNB sends the RRC reconfiguration message, where the RRC reconfiguration message carries the RB ID of the second DRB and the identifier of the first EPS-Bearer, and the RRC reconfiguration message also carries the fully configured Full Config parameter. The Full Config parameter is used to instruct the UE to bind the first EPS-Bearer and the second DRB.
14、根据权利要求 9至 13中任一项所述的方法, 其特征在于, 所述 PeNB 向所述 UE发送辅配置信息之后, 还包括: The method according to any one of claims 9 to 13, wherein the PeNB After the secondary configuration information is sent to the UE, the method further includes:
所述 PeNB接收所述 SGW发送的数据流;  Receiving, by the PeNB, a data stream sent by the SGW;
所述 PeNB将所述数据流分流为第一下行数据流和第二下行数据流; 所述 PeNB将所述第一下行数据流经由所述 SeNB发送给所述 UE,其中, 所述 SeNB与所述 UE之间传输所述第一下行数据流的承载为所述第二 DRB; 所述 PeNB通过第三 DRB向所述 UE发送所述第二下行数据流, 所述第 三 DRB为所述 PeNB在 PCell中为所述 UE分配的数据无线承载。  The PeNB offloads the data stream into a first downlink data stream and a second downlink data stream; the PeNB sends the first downlink data stream to the UE by using the SeNB, where the SeNB Transmitting the bearer of the first downlink data stream with the UE as the second DRB; the PeNB sending the second downlink data stream to the UE by using a third DRB, where the third DRB is The data radio bearer allocated by the PeNB to the UE in the PCell.
15、 一种用户设备 UE, 其特征在于, 包括: 第一单元、 第二单元和第三 单元, 其中,  A user equipment (UE), comprising: a first unit, a second unit, and a third unit, where
第一单元用于接收主基站 PeNB发送的辅配置信息,所述辅配置信息包括 辅基站 SeNB在辅小区 SCell中为所述 UE分配的第二数据无线承载 DRB的信 息, 所述 SeNB管理所述 SCell, 所述 SCell为所述 UE的辅小区;  The first unit is configured to receive the secondary configuration information sent by the primary base station PeNB, where the secondary configuration information includes information about the second data radio bearer DRB allocated by the secondary base station SeNB to the UE in the secondary cell SCell, where the SeNB manages the SCell, the SCell is a secondary cell of the UE;
第二单元用于绑定第一演进型分组网络承载 EPS-Bearer 和所述第二 DRB, 其中, 所述第一 EPS-Bearer在与所述第二 DRB绑定之前与第一 DRB 绑定,所述第一 DRB为所述 PeNB在主小区 PCell中为所述 UE分配的数据无 线承载, 所述 PeNB管理所述 PCell, 所述 PCell为所述 UE的主小区;  The second unit is configured to bind the first evolved packet network bearer EPS-Bearer and the second DRB, where the first EPS-Bearer is bound to the first DRB before being bound to the second DRB, The first DRB is a data radio bearer allocated by the PeNB to the UE in the primary cell PCell, the PeNB manages the PCell, and the PCell is a primary cell of the UE;
第三单元用于使用与所述第一 EPS-Bearer绑定的第二 DRB传输数据流。 The third unit is configured to transmit the data stream using the second DRB bound to the first EPS-Bearer.
16、 根据权利要求 15所述的用户设备, 其特征在于, 16. The user equipment according to claim 15, wherein
所述第一单元还用于: 接收所述 PeNB发送的主配置信息, 所述主配置信 息包括所述第一 DRB的信息;  The first unit is further configured to: receive primary configuration information sent by the PeNB, where the primary configuration information includes information about the first DRB;
所述第二单元还用于: 绑定所述第一 EPS-Bearer与所述第一 DRB。  The second unit is further configured to: bind the first EPS-Bearer and the first DRB.
17、 根据权利要求 15或 16所述的用户设备, 其特征在于,  17. User equipment according to claim 15 or 16, characterized in that
所述第一单元具体用于: 接收所述 PeNB发送的无线资源控制协议 RRC 重配置消息, 所述 RRC重配置消息携带有第二 DRB的无线承载标识 RB ID 和第一 EPS-Bearer的标识 ID ,所述 RRC重配置消息还携带全配置 Full Config 参数, 所述 Full Config参数用于指示所述 UE绑定第一 EPS-Bearer和第二 DRB;  The first unit is specifically configured to: receive a radio resource control protocol RRC reconfiguration message sent by the PeNB, where the RRC reconfiguration message carries a radio bearer identifier RB ID of the second DRB and an identifier ID of the first EPS-Bearer The RRC reconfiguration message further carries a fully configured Full Config parameter, where the Full Config parameter is used to indicate that the UE binds the first EPS-Bearer and the second DRB;
所述第二单元具体用于: 在获取到所述 RRC重配置消息中 Full Config参 数之后, 在非接入 NAS层中建立所述第一 EPS-Bearer的 ID与所述第二 DRB 的 RB ID之间的映射关系。 18、 根据权利要求 15至 17中任一项所述的用户设备, 其特征在于, 当所 述 SeNB通过所述第二 DRB发送第一下行数据流时,所述第三单元具体用于: 通过所述第二 DRB接收所述 SeNB发送的第一下行数据流; The second unit is specifically configured to: after obtaining the Full Config parameter in the RRC reconfiguration message, establish the ID of the first EPS-Bearer and the RB ID of the second DRB in the non-access NAS layer The mapping relationship between them. The user equipment according to any one of claims 15 to 17, wherein when the SeNB sends the first downlink data stream by using the second DRB, the third unit is specifically configured to: Receiving, by the second DRB, the first downlink data stream sent by the SeNB;
所述第三单元还用于: 在所述 UE通过所述第二 DRB接收所述 SeNB发 送的第一下行数据流时, 若所述 PeNB通过第三 DRB发送第二下行数据流, 所述 UE通过所述第三 DRB接收所述 PeNB发送的第二下行数据流, 所述第 三 DRB与第二 EPS-Bearer绑定,所述第三 DRB为所述 PeNB在 PCell中为所 述 UE分配的数据无线承载;  The third unit is further configured to: when the UE receives the first downlink data stream sent by the SeNB by using the second DRB, if the PeNB sends the second downlink data stream by using the third DRB, The UE receives the second downlink data stream sent by the PeNB by using the third DRB, where the third DRB is bound to the second EPS-Bearer, and the third DRB is that the PeNB allocates the UE to the UE in the PCell. Data radio bearer;
其中, 所述第一下行数据流和所述第二下行数据流为统一控制节点 SRC 对从服务网关 SGW接收到的数据流进行分流得到, 或所述第一下行数据流和 所述第二下行数据流为所述 PeNB对从所述 SGW接收到的数据流进行分流得 到。  The first downlink data stream and the second downlink data stream are obtained by the unified control node SRC offloading the data stream received from the serving gateway SGW, or the first downlink data stream and the first The two downlink data flows are obtained by the PeNB offloading the data stream received from the SGW.
19、 根据权利要求 15至 17中任一项所述的用户设备, 其特征在于, 所述 数据流为所述 UE需要发送的上行数据流, 所述第三单元具体用于: 通过所述 第一 EPS-Bearer确定与所述第一 EPS-Bearer绑定的第二 DRB; 将需要发送的 上行数据流通过所述第二 DRB发送给所述 SeNB,由所述 SeNB将所述需要发 送的上行数据流发送给 SRC或 SGW。  The user equipment according to any one of claims 15 to 17, wherein the data stream is an uplink data stream that the UE needs to send, and the third unit is specifically configured to: An EPS-Bearer determines a second DRB that is bound to the first EPS-Bearer; and sends an uplink data stream that needs to be sent to the SeNB by using the second DRB, where the SeNB sends the uplink that needs to be sent. The data stream is sent to the SRC or SGW.
20、 根据权利要求 15至 19中任一项所述的用户设备, 其特征在于, 所述 第一单元接收到的所述第二 DRB由所述 SeNB在所述 SCell中为所述 UE建立, 且所述第二 DRB的信息由所述 PeNB从所述 SeNB获取到并携带在所述辅配 置信息中发送给所述 UE。  The user equipment according to any one of claims 15 to 19, wherein the second DRB received by the first unit is established by the SeNB for the UE in the SCell, And the information of the second DRB is obtained by the PeNB from the SeNB and carried in the secondary configuration information and sent to the UE.
21、 根据权利要求 15至 20中任一项所述的用户设备, 其特征在于, 所述 第二单元使用的所述第一 EPS-Bearer 为默认演进型分组网络承载 Default EPS-Bearer, 或专用演进型分组网络 载 Dedicated EPS-Bearer。  The user equipment according to any one of claims 15 to 20, wherein the first EPS-Bearer used by the second unit is a default evolved packet network bearer Default EPS-Bearer, or dedicated The evolved packet network carries Dedicated EPS-Bearer.
22、 根据权利要求 15至 20中任一项所述的用户设备, 其特征在于, 所述 第二单元使用的所述第一 EPS-Bearer 为辅助演进型分组网络承载 Assisting EPS-Bearer;  The user equipment according to any one of claims 15 to 20, wherein the first EPS-Bearer used by the second unit is an assisted evolved packet network bearer Assisting EPS-Bearer;
所述 Assisting EPS-Bearer是由移动管理实体 MME触发建立,或者由核心 网中的 PGW触发建立, 或者由所述 UE触发建立的 EPS-Bearer。  The Assisting EPS-Bearer is triggered by the mobility management entity MME, or triggered by the PGW in the core network, or triggered by the UE to establish the EPS-Bearer.
23、 一种基站, 其特征在于, 所述基站为主基站 PeNB, 包括: 第一单元 和第二单元, 其中, A base station, where the base station is a primary base station PeNB, including: a first unit And the second unit, wherein
第一单元用于获取辅基站 SeNB在辅小区 SCell中为用户设备 UE分配的 第二数据无线承载 DRB的信息, 所述 SeNB管理所述 SCell, 所述 SCell为所 述 UE的辅小区;  The first unit is configured to acquire information about a second data radio bearer DRB allocated by the SeNB in the secondary cell SCell to the user equipment UE, where the SeNB manages the SCell, and the SCell is a secondary cell of the UE;
第二单元用于向所述 UE发送辅配置信息,所述辅配置信息包括所述第二 The second unit is configured to send the secondary configuration information to the UE, where the secondary configuration information includes the second
DRB的信息; DRB information;
其中, 所述第二 DRB 用于所述 UE 绑定第一演进型分组网络承载 EPS-Bearer和所述第二 DRB , 以根据所述第二 DRB与所述 SeNB之间传输数 据流。  The second DRB is used by the UE to bind the first evolved packet network bearer EPS-Bearer and the second DRB to transmit a data stream according to the second DRB and the SeNB.
24、 根据权利要求 23所述的基站, 其特征在于, 所述 PeNB, 还包括: 第三单元, 其中,  The base station according to claim 23, wherein the PeNB further includes: a third unit, where
所述第三单元用于: 所述获取模块获取辅基站 SeNB在辅小区 SCell中为 用户设备 UE分配的第二数据无线承载 DRB的信息之前,在主小区 PCell中为 所述 UE分配第一 DRB, 所述 PeNB管理所述 PCell, 所述 PCell为所述 UE 的主小区;  The third unit is configured to: obtain, by the acquiring module, the first DRB for the UE in the primary cell PCell before the information about the second data radio bearer DRB allocated by the secondary base station SeNB for the user equipment UE in the secondary cell SCell The PeNB manages the PCell, where the PCell is a primary cell of the UE;
所述第二单元还用于: 向所述 UE发送所述主配置信息, 所述主配置信息 包括: 所述第一 DRB的信息;  The second unit is further configured to: send the primary configuration information to the UE, where the primary configuration information includes: information about the first DRB;
其中, 所述第一 DRB用于所述 UE在绑定所述第一 EPS-Bearer和所述第 二 DRB之前, 绑定所述第一 EPS-Bearer和所述第一 DRB。  The first DRB is used by the UE to bind the first EPS-Bearer and the first DRB before binding the first EPS-Bearer and the second DRB.
25、 根据权利要求 24所述的基站, 其特征在于, 所述第二单元发送的所 述辅配置信息用于指示所述 UE解除所述第一 EPS-Bearer与所述第一 DRB的 绑定, 并绑定所述第一 EPS-Bearer与所述第二 DRB。  The base station according to claim 24, wherein the secondary configuration information sent by the second unit is used to instruct the UE to release the binding of the first EPS-Bearer and the first DRB. And binding the first EPS-Bearer to the second DRB.
26、 根据权利要求 23至 25中任一项所述的基站, 其特征在于, 所述第一 单元具体用于: 接收所述 SeNB发送的所述第二 DRB的信息; 或, 接收统一 控制节点 SRC发送的所述第二 DRB 的信息, 所述第二 DRB 的信息由所述 SeNB发送给所述 SRC。  The base station according to any one of claims 23 to 25, wherein the first unit is specifically configured to: receive information about the second DRB sent by the SeNB; or receive a unified control node. The information of the second DRB sent by the SRC, and the information of the second DRB is sent by the SeNB to the SRC.
27、 根据权利要求 23至 26中任一项所述的基站, 其特征在于, 所述第二 DRB的信息为所述第二 DRB的无线承载标识 RB ID; 所述辅配置信息为无线 资源控制协议 RRC重配置消息;  The base station according to any one of claims 23 to 26, wherein the information of the second DRB is a radio bearer identifier RB ID of the second DRB, and the auxiliary configuration information is radio resource control. Protocol RRC reconfiguration message;
所述第二单元具体用于: 发送所述 RRC重配置消息, 所述 RRC重配置消 息携带有第二 DRB的 RB ID和第一 EPS-Bearer的标识 ID, 所述 RRC重配置 消息还携带全配置 Full Config参数, 所述 Full Config参数用于指示所述 UE 绑定第一 EPS-Bearer和第二 DRB。 The second unit is specifically configured to: send the RRC reconfiguration message, where the RRC reconfiguration is And carrying the RB ID of the second DRB and the identifier of the first EPS-Bearer, where the RRC reconfiguration message further carries a fully configured Full Config parameter, where the Full Config parameter is used to indicate that the UE is bound to the first EPS- Bearer and the second DRB.
28、根据权利要求 23至 27中任一项所述的基站,其特征在于,所述 PeNB, 还包括: 第四单元和第五单元, 其中,  The base station according to any one of claims 23 to 27, wherein the PeNB further includes: a fourth unit and a fifth unit, where
所述第四单元用于: 所述第二单元向所述 UE发送辅配置信息之后, 接收 所述 SGW发送的数据流;  The fourth unit is configured to: after the second unit sends the secondary configuration information to the UE, receive the data stream sent by the SGW;
所述第五单元用于:将所述数据流分流为第一下行数据流和第二下行数据 流;  The fifth unit is configured to: offload the data stream into a first downlink data stream and a second downlink data stream;
所述第二单元还用于:将所述第一下行数据流经由所述 SeNB发送给所述 The second unit is further configured to: send the first downlink data stream to the
UE,其中,所述 SeNB与所述 UE之间传输所述第一下行数据流的承载为所述 第二 DRB; a UE, wherein the bearer transmitting the first downlink data flow between the SeNB and the UE is the second DRB;
所述第二单元还用于: 通过第三 DRB向所述 UE发送所述第二下行数据 流, 所述第三 DRB为所述 PeNB在 PCell中为所述 UE分配的数据无线承载。  The second unit is further configured to: send the second downlink data stream to the UE by using a third DRB, where the third DRB is a data radio bearer allocated by the PeNB to the UE in a PCell.
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