WO2009111931A1 - 基于切换的承载建立方法及系统 - Google Patents

基于切换的承载建立方法及系统 Download PDF

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Publication number
WO2009111931A1
WO2009111931A1 PCT/CN2008/071661 CN2008071661W WO2009111931A1 WO 2009111931 A1 WO2009111931 A1 WO 2009111931A1 CN 2008071661 W CN2008071661 W CN 2008071661W WO 2009111931 A1 WO2009111931 A1 WO 2009111931A1
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Prior art keywords
base station
bearer
request message
handover
target base
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PCT/CN2008/071661
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English (en)
French (fr)
Inventor
刘霖
Original Assignee
中兴通讯股份有限公司
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Publication date
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to EP08773199.8A priority Critical patent/EP2273804B1/en
Priority to US12/922,171 priority patent/US8442007B2/en
Publication of WO2009111931A1 publication Critical patent/WO2009111931A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0033—Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/04—Interfaces between hierarchically different network devices
    • H04W92/045—Interfaces between hierarchically different network devices between access point and backbone network device

Definitions

  • the present invention relates to the field of mobile communications, and in particular, to a handover-based bearer establishment method and system between network elements. Background technique
  • Evolved UTRAN Evolved UTRAN
  • the purpose of network evolution is to provide a low latency, high data rate, high system capacity and high coverage, low cost, fully IP based network.
  • the evolved mobile communication system is called evolved packet.
  • Evolved Packet System (EPS) 0 shows the architecture of E-UTRAN.
  • E-UTRAN consists of E-UTRAN NodeB (eNB) for users.
  • the access provides radio resources; the eNBs interact with each other through the X2 interface; the eNB passes the S1 interface and the evolved packet core network (Evolved Packet C) Ore, referred to as EPC) is connected.
  • EPC evolved packet core network
  • the service is provided by a bearer, and different services correspond to different bearers to meet different business requirements. In order to meet the requirements of the business, there are many bearers. Attributes, including rate, priority, etc.
  • the bearer in the EPS system is defined as an EPS bearer.
  • ABR Aggregate Maximum Bit Rate
  • MME Mobile Management Entity
  • the target eNB For the handover through the MME, the target eNB also needs to establish a bearer when switching from the source eNB to the target eNB.
  • the target eNB does not know the AMBR information of the UE, so that the target eNB cannot be established correctly. Bearer.
  • the present invention has been made in view of the following problems in the related art, that is, for a handover by an MME, when the target eNB does not know the AMBR information of the UE when switching from the source eNB to the target eNB, the target eNB cannot be correct.
  • the present invention aims to provide a handover-based bearer establishment method and system for solving the above problems in the related art.
  • a handover-based bearer establishment method is provided.
  • a handover-based bearer establishment method is configured to: when a user equipment is handed over from a source base station to a target base station, the target base station establishes a handover request message to the mobility management entity to request Switching to the target base station, the mobility management entity sends a handover request message to the target base station, and carries the bearer setup information in the handover request message, and the mobility management entity sends a handover request message to the target base station, and carries the maximum of the user equipment in the handover request message.
  • the bit rate is the AMBR information.
  • the bearer established by the target base station is one or more bearers, and the non-guaranteed rate is included therein.
  • a handover-based bearer establishment method for switching from a source base station to a user equipment
  • the target base station establishes a bearer for the user equipment.
  • the source base station initiates to the source mobility management entity.
  • the source mobility management entity forwards the handover request message to the target mobility management entity; the target mobility management entity sends a handover request message to the target base station, and carries the bearer setup information and the user in the handover request message
  • the aggregate maximum bit rate information of the device is the AMBR information; the target base station allocates the bandwidth according to the AMBR information, and establishes the bearer for the user equipment according to the bearer setup information.
  • a handover-based bearer setup system including a source base station, a target base station, and a mobility management entity, where the mobility management entity is configured to forward a handover request message from a source base station to a target base station, And carrying the bearer setup information in the handover request message.
  • the mobility management entity carries the aggregate maximum bit rate information of the user equipment, that is, the AMBR information, in the handover request message.
  • a handover-based bearer setup system is provided for establishing a bearer for a user equipment that is handed over from a source base station to a target base station.
  • the handover-based bearer setup system includes: a handover request module, located at the source base station, configured to send a handover request message to the mobility management entity; and a message processing module, located in the mobility management entity, configured to process the received handover request message And transmitting a handover request message carrying the bearer setup information and the user equipment AMBR information to the target base station; the bearer setup module is located at the target base station, and configured to allocate bandwidth according to the AMBR information in the handover request message received by the target base station, and according to the bearer The establishment of the information establishment bearer; the handover response module, located at the target base station, is configured to return a handover request response message to the mobility management entity after the bearer setup module establishes the bearer.
  • the AMBR information is transmitted from the MME to the target base station through the S1-MME interface when the MME is switched, so that the target base station can obtain the AMBR information, thereby realizing the establishment of the bearer.
  • FIG. 3 P20730 1 is a schematic diagram of an E-UTRAN system according to the related art
  • FIG. 2 is a flowchart of a handover-based bearer establishment method according to an embodiment of the present invention
  • FIG. 3 is a handover-based bearer establishment method according to another embodiment of the present invention
  • FIG. 4 is a flowchart of a specific implementation of the method shown in FIG. 2 or FIG. 3.
  • FIG. 5 is a structural block diagram of a handover-based bearer setup system according to an embodiment of the present invention.
  • the target base station does not know the AMBR information of the user equipment, and the bearer cannot be correctly established. Therefore, in the present invention, a handover based is provided.
  • a handover-based bearer establishment method is provided.
  • the target base station When a user equipment switches from a source base station to a target base station, the target base station establishes a bearer for the user equipment, and the source base station initiates handover to the mobility management entity.
  • the request message is used to request handover to the target base station, and the mobility management entity sends a handover request message to the target base station, and carries the bearer setup information in the handover request message.
  • the handover-based bearer establishment method includes: the mobility management entity sends a handover request message to the target base station, and carries the total maximum bit rate information of the user equipment, that is, the AMBR information, in the handover request message.
  • the above technical solutions will be described in detail with reference to the accompanying drawings.
  • Figure 2 is a flow chart showing the method. As shown in FIG. 2, the following process is generally included: Step S202: The source base station sends a handover request message to the MME to request handover to the target base station. Step S204: The MME sends a handover request message to the target base station, and in the handover request message. Carrying the setup information and the AMBR information of the UE;
  • Step S206 The target base station allocates bandwidth according to the AMBR information, and establishes a bearer for the UE according to the bearer setup information. Specifically, the sum of the bandwidth of the non-guaranteed rate (Non-GBR) bearer established by the target base station is less than or equal to the value of the AMBR information. .
  • another handover bearer establishment method is further provided, where the target base station establishes a bearer for the UE when the UE switches from the source base station to the target base station.
  • Figure 3 is a flow chart showing the method. As shown in FIG.
  • Step S302 The source base station sends a handover request message to the source MME to request handover to the target base station; Step S304, the source MME forwards the handover request message to the target MME; Step S306, target The MME sends a handover request message to the target base station, and carries the bearer setup information and the AMBR information of the UE in the handover request message. Step S308, the target base station allocates the bandwidth according to the AMBR information, and establishes a bearer for the UE according to the bearer setup information.
  • Non-GBR non-guaranteed rate
  • the source eNB performs a handover decision according to the measurement report of the UE, and determines to initiate a handover between the MMEs. 402.
  • the source eNB initiates a handover request message to the MME. If the MME is a source MME, the source MME needs to forward the handover request message. To the target MME;
  • the MME sends the handover request message to the target eNB through the S1-MME interface, and carries the bearer information to be established in the message, and also brings the AMBR information of the UE to the target eNB; 404, the target eNB obtains To establish the information of 7
  • the target eNB returns a handover request response message to the MME.
  • the MME initiates a handover command to the source eNB.
  • the source eNB initiates a handover command to the UE.
  • the target eNB initiates a handover notification to the MME, and notifies the MME that the UE has completed the handover. 410.
  • the MME sends a release resource message to the source eNB, and the source eNB releases the related resource, and the handover is completed.
  • the AMBR information of the UE is transmitted from the MME on the network side to the eNB through the S1-MME interface, so that the target eNB obtains the AMBR information and implements bearer establishment.
  • a handover-based bearer setup system includes a source base station (source eNB), a target base station (target eNB), and a mobility management entity (MME), where the MME is configured to The handover request message from the source base station is forwarded to the target base station. Further, the MME carries the bearer setup information and the AMBR information of the UE in the handover request message, and the target base station allocates the bandwidth according to the AMBR information in the received handover request message, and establishes the information according to the bearer in the handover request message. Establish a bearer.
  • the system can be understood with reference to the system shown in FIG.
  • a handover-based bearer setup system configured to establish a bearer for a user equipment that is handed over from a source base station to a target base station, where the source base station and the target base station are respectively connected to the MME through an S1 interface. As shown in FIG.
  • the handover-based bearer establishment system includes: a handover request module 50, located at a source base station, configured to send a handover request message to a mobility management entity; and a message processing module 52, located in the mobility management entity, And processing the received handover request message, and transmitting the handover request message to the target base station after the handover request message carries the bearer setup information and the AMBR information of the user equipment; the bearer setup module 54 is located at the target base station, and is configured to receive according to the target base station.
  • the AMBR information in the handover request message is allocated bandwidth, and the bearer is established according to the bearer setup information.
  • the system may further include a handover answering module as indicated by the dashed box in the figure
  • the target base station is configured to: after the bearer establishing module 54 establishes the bearer, return a handover request response message to the mobility management entity.
  • the AMBR information is transmitted from the S to the target base station through the S1-MME interface when the inter-time handover occurs, so that the target base station can obtain the AMBR information, thereby realizing the establishment of the bearer. .
  • the above is only the preferred embodiment of the present invention, and is not intended to limit the present invention.
  • the present invention can be variously modified and modified. Any modifications, equivalent substitutions, improvements, etc. made therein are intended to be included within the scope of the present invention.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Description

基于切换的 载建立方法及系统
技术领域 本发明涉及移动通信领域， 具体地， 涉及网元间的基于切换的承载建立 方法及系统。 背景技术
P 着全球微波接入互通 ( World Interoperability for Microwave Access , 简称 Wimax ) 的异军突起， 第三代 （3rd Generation, 简称为 3G ) 移动通信 系统要保持其在移动通信领域的强有力的竟争力， 必须提高其网络性能并降 低网络建设和运营成本。 因 匕， 第三 4弋合作伙伴计划 （ 3rd Generation Partnership Project, 简称为
3GPP )的标准化工作组目前正致力研究对包交换核心网（ Packet Switch Core , 简称为 PS Core ) 和全球移动通信系统无线接入网 （ Universal Mobile Telecommunication System Radio Access Network, 简称为 UTRAN ) 的演进， 该研究的课题叫故系统架构演进 ( System Architecture Evolution , 简称 S ΑΕ ) 和接入网的长期演进 ( Long Term Evolution, 简称 LTE ), 其中， 演进的接入 网称为演进的 UTRAN ( Evolved UTRAN, 简称为 E-UTRAN )„ 网络演进的目的是提供一种低时延、高数据速率、高系统容量和高覆盖、 低成本、 完全基于 IP 的网络。 该演进的移动通信系统称为演进的分组系统 ( Evolved Packet System, 简称为 EPS )0 图 1示出了 E-UTRAN的架构。 如图 1所示， E-UTRAN由演进的节点 B ( E-UTRAN NodeB , 简称为 eNB ) 组成， 为用户的接入提供无线资源； eNB相互之间通过 X2接口进行 交互； eNB通过 S1接口和演进的分组核心网 （ Evolved Packet Core, 简称为 EPC ) 相连。 在移动通信系统中， 业务是由 载 （bearer ) 来提供的， 不同的业务对 应不同的 bearer, 从而满足不同的业务要求， 为了满足业务的要求， bearer 有艮多属性，包括速率、优先级等。 EPS系统中的 bearer被定义为 EPS bearer„
1 P20730 在 EPS系统中， 合计最大比特率信息 （ Aggregate Maximum Bit Rate , 简称为 AMBR )是一个用户的多个 bearer共享的最大速率， 当其他 bearer没 有传送数据时，这些 bearer中的每一个都可以使用这个 AMBR的全部。 AMBR 限制了共享这个 AMBR的所有 bearer能够提供的速率的总和。 eNB要才艮据 AMBR为 bearer分配带宽， 载建立完成之后， 要执行 AMBR的控制。 EPS bearer建立时， 核心网才艮据 bearer的属' 1·生， 决定 bearer是否和其他 bearer共 享 AMBR。 所以， 移动管理实体（Mobile Management Entity , 简称为 MME ) 在 bearer建立时需要 UE的 AMBR信息带给 eNB。 对于经过 MME的切换， 在从源 eNB切换到目标 eNB时， 目标 eNB同 样需要建立 bearer, 但是， 按照目前釆用的切换方法， 目标 eNB 并不知道 UE的 AMBR信息， 这样目标 eNB就无法正确建立 bearer。 发明内容 考虑到相关技术中存在的如下问题而提出本发明， 即， 对于经过 MME 的切换，在从源 eNB切换到目标 eNB时，目标 eNB由于不知道 UE的 AMBR 信息， 这样目标 eNB就无法正确建立 bearer, 为此， 本发明旨在提供一种基 于切换的承载建立方法及系统， 用以解决相关技术中存在的上述问题。 为了实现上述目的， 根据本发明的一个方面， 提供了一种基于切换的承 载建立方法。 根据本发明实施例的基于切换的承载建立方法，用于在用户设备从源基 站切换到目标基站时， 目标基站为用户设备建立 ^l载， 源基站向移动管理实 体发起切换请求消息， 以请求切换到目标基站， 移动管理实体向目标基站发 送切换请求消息， 并在切换请求消息中携带承载建立信息， 移动管理实体向 目标基站发送切换请求消息， 并在切换请求消息中携带用户设备的合计最大 比特率即 AMBR信息。 其中， 目标基站建立的承载为一个或多个承载， 并且其中非保证速率
(Non- Guaranteed Bit Rate, Non-GBR |载的带宽总和小于等于 AMBR的值。 根据本发明的另一方面， 提供了一种基于切换的承载建立方法， 用于在 用户设备从源基站切换到目标基站时， 目标基站为用户设备建立承载。 在根据本发明实施例的承载建立方法中，源基站向源移动管理实体发起
2 P20730 切换请求消息， 以请求切换到目标基站； 源移动管理实体将切换请求消息转 发到目标移动管理实体； 目标移动管理实体向目标基站发送切换请求消息， 并在切换请求消息中携带承载建立信息和用户设备的合计最大比特率信息即 AMBR信息； 目标基站才艮据 AMBR信息分配带宽， 并才艮据承载建立信息为 用户设备建立 载。 根据本发明的另一方面， 提供了一种基于切换的承载建立系统， 包括源 基站、 目标基站、 移动管理实体， 其中， 移动管理实体用于将来自源基站的 切换请求消息转发到目标基站， 并在切换请求消息中携带承载建立信息。 在根据本发明实施例的基于切换的承载建立系统中，移动管理实体在切 换请求消息中携带用户设备的合计最大比特率信息即 AMBR信息。 根据本发明的再一方面， 提供了一种基于切换的承载建立系统， 用于为 从源基站切换到目标基站的用户设备建立承载。 根据本发明实施例基于切换的承载建立系统包括： 切换请求模块， 位于 源基站， 用于向移动管理实体发送切换请求消息； 消息处理模块， 位于移动 管理实体， 用于处理接收到的切换请求消息， 并将携带承载建立信息以及用 户设备 AMBR信息的切换请求消息发送到目标基站； 承载建立模块，位于目 标基站， 用于根据目标基站接收到的切换请求消息中的 AMBR 信息分配带 宽， 并根据承载建立信息建立承载； 切换应答模块， 位于目标基站， 用于在 承载建立模块建立承载后， 向移动管理实体返回切换请求应答消息。 通过本发明的上述至少一个技术方案， 实现了以下有益效果： 通过将
AMBR信息在发生经过 MME的切换时从 MME通过 S1-MME接口传递给目 标基站， 使得目标基站能够获得 AMBR信息， 从而实现承载的建立。 本发明的其它特征和优点将在随后的说明书中阐述， 并且， 部分地从说 明书中变得显而易见， 或者通过实施本发明而了解。 本发明的目的和其他优 点可通过在所写的说明书、 权利要求书、 以及附图中所特别指出的结构来实 现和获得。 附图说明 附图用来提供对本发明的进一步理解， 并且构成说明书的一部分， 与本 发明的实施例一起用于解释本发明， 并不构成对本发明的限制。 在附图中：
3 P20730 图 1是根据相关技术的 E-UTRAN系统的示意图； 图 2是根据本发明实施例的基于切换的承载建立方法的流程图； 图 3是根据本发明另一实施例的基于切换的承载建立方法的流程图； 图 4是图 2或图 3所示的方法的具体实现方式的流程图； 图 5是根据本发明实施例的基于切换的承载建立系统的结构框图。 具体实施方式 如上所述， 对于经过 MME的切换， 目前， 目标基站并不知道用户设备 的 AMBR信息， 也就无法正确建立承载（bearer ), 为此， 在本发明中， 提供 了一种基于切换的承载建立方法及系统， 使得 MME在切换消息中把 AMBR 信息带给目标基站。 以下结合附图对本发明的优选实施例进行说明， 应当理解， 此处所描述 的优选实施例仅用于说明和解释本发明， 并不用于限定本发明。 方法实施例 根据本发明实施例， 提供了一种基于切换的承载建立方法， 用于在用户 设备从源基站切换到目标基站时， 目标基站为用户设备建立承载， 源基站向 移动管理实体发起切换请求消息， 以请求切换到目标基站， 移动管理实体向 目标基站发送切换请求消息， 并在切换请求消息中携带承载建立信息。 根据本发明实施例的基于切换的承载建立方法包括：移动管理实体向目 标基站发送切换请求消息， 并在切换请求消息中携带用户设备的合计最大比 特率信息即 AMBR信息。 下面， 结合附图， 对上述技术方案进行详细说明。 图 2是示出该方法的 流程图。 如图 2所示， 一般地， 包括以下处理： 步骤 S202, 源基站向 MME发起切换请求消息， 以请求切换到目标基 站； 步骤 S204 , MME向目标基站发送切换请求消息， 并在切换请求消息中 携带 载建立信息和 UE的 AMBR信息；
4 P20730 步骤 S206, 目标基站才艮据 AMBR信息分配带宽， 并才艮据承载建立信息 为 UE建立承载； 具体地， 目标基站建立的非保证速率 (Non-GBR)承载的带 宽总和小于等于 AMBR信息的值。 根据本发明实施例， 还提供了另一种切换的承载建立方法， 用于在 UE 从源基站切换到目标基站时， 目标基站为 UE建立承载。 图 3是示出该方法 的流程图。 如图 3所示， 一般地， 包括以下处理： 步骤 S302, 源基站向源 MME发起切换请求消息， 以请求切换到目标 基站； 步骤 S304, 源 MME向目标 MME转发切换请求消息； 步骤 S306, 目标 MME向目标基站发送切换请求消息， 并在切换请求 消息中携带承载建立信息和 UE的 AMBR信息； 步骤 S308 , 目标基站才艮据 AMBR信息分配带宽， 并才艮据承载建立信息 为 UE建立承载； 具体地， 目标基站建立的非保证速率 (Non-GBR)承载的带 宽总和小于等于 AMBR信息的值。 以下结合图 4 给出了上述方法的一个实施例。 需要说明的是， 在图 4 给出的实例中， 合一示出了源 MME和目标 MME。 如图 4所示， 用于实施 本发明的方法包括以下处理：
401 , 源 eNB才艮据 UE的测量报告进行切换决策， 决定发起 MME间的 切换； 402 ,源 eNB向 MME发起切换请求消息；如果这里的 MME是源 MME , 则源 MME需要将切换请求消息转发到目标 MME;
403 , (目标） MME通过 S1-MME接口向目标 eNB发送该切换请求消 息， 并在消息中携带要建立的承载信息， 同时， 还把 UE的 AMBR信息也带 给目标 eNB; 404, 目标 eNB获得要建立 7|载的信息， 以及 UE的 AMBR信息， 才艮 据这些信息建立承载；
405 , 目标 eNB向 MME返回切换请求应答消息；
5 P20730 406, MME向源 eNB发起切换命令;
407 , 源 eNB向 UE发起切换命令;
408 , UE切换到目标小区后， 向目标 eNB发切换确认消息；
409 , 目标 eNB向 MME发起切换通知， 通知 MME UE已经切换完成； 410, MME向源 eNB发送释放资源消息， 源 eNB释放相关的资源， 切 换完成。 通过上面的描述可以看出， UE 的 AMBR 信息在切换时从网络侧的 MME通过 S1-MME接口传递给 eNB , 使目标 eNB获得 AMBR信息， 实现 承载建立。 系统实施例 根据本发明实施例， 提供了一种基于切换的承载建立系统， 该系统包括 源基站 （源 eNB )、 目标基站 （目标 eNB )、 移动管理实体 ( MME ), 其中， MME用于将来自源基站的切换请求消息转发到目标基站。 进一步地， MME在切换请求消息中携带 7|载建立信息和 UE的 AMBR 信息， 并且目标基站才艮据接收到的切换请求消息中的 AMBR信息分配带宽， 并根据切换请求消息中的承载建立信息建立承载。 该系统可以参照图 1所示 的系统来理解。 根据本发明实施例， 还提供了一种基于切换的承载建立系统， 用于为从 源基站切换到目标基站的用户设备建立承载， 其中， 源基站和目标基站分别 通过 S1接口与 MME连接。 如图 5所示， 根据本发明实施例基于切换的承载建立系统包括： 切换请 求模块 50, 位于源基站， 用于向移动管理实体发送切换请求消息； 消息处理 模块 52, 位于移动管理实体， 用于处理接收到的切换请求消息， 并在切换请 求消息携带承载建立信息以及用户设备的 AMBR信息，之后将切换请求消息 发送到目标基站； 承载建立模块 54, 位于目标基站， 用于根据目标基站接收 到的切换请求消息中的 AMBR 信息分配带宽， 并根据承载建立信息建立承 载。
6 P20730 优选地， 如图中的虚线框所示， 该系统可以进一步包括切换应答模块
56, 位于目标基站， 用于在承载建立模块 54 建立承载后， 向移动管理实体 返回切换请求应答消息。 如上所述， 借助于本发明的上述至少一个技术方案， 通过将 AMBR信 息在发生 ΜΜΕ间切换时从 ΜΜΕ通过 S1-MME接口传递给目标基站， 使得 目标基站能够获得 AMBR信息， 从而实现承载的建立。 以上所述仅为本发明的优选实施例而已， 并不用于限制本发明， 对于本 领域的技术人员来说， 本发明可以有各种更改和变^^ 凡在本发明的^^申和 原则之内， 所作的任何修改、 等同替换、 改进等， 均应包含在本发明的保护 范围之内。
7 Ρ20730

Claims

权 利 要 求 书
1. 一种基于切换的承载建立方法， 用于在用户设备从源基站切换到目标基 站时， 目标基站为用户设备建立承载， 源基站向移动管理实体发起切换 请求消息， 以请求切换到目标基站， 所述移动管理实体向所述目标基站 发送所述切换请求消息， 并在所述切换请求消息中携带承载建立信息， 其特征在于：
所述移动管理实体向所述目标基站发送所述切换请求消息，并在所 述切换请求消息中携带用户设备的合计最大比特率信息即 AMBR信息。
2. 才艮据权利要求 1所述的方法， 其特征在于，
所述目标基站建立的所述承载为一个或多个承载，并且所述承载中 的非保证速率承载的带宽总和小于等于所述 AMBR信息的值。
3. 一种基于切换的承载建立方法， 用于在用户设备从源基站切换到目标基 站时， 目标基站为用户设备建立承载， 其特征在于： 源基站向源移动管理实体发起切换请求消息，以请求切换到目标基 站；
所述源移动管理实体将所述切换请求消息转发到目标移动管理实 体；
所述目标移动管理实体向所述目标基站发送所述切换请求消息，并 在所述切换请求消息中携带承载建立信息和用户设备的合计最大比特率 信息即 AMBR信息；
所述目标基站才艮据所述 AMBR信息分配带宽， 并根据所述承载建 立信息为所述用户设备建立承载。
4. 一种基于切换的承载建立系统， 包括源基站、 目标基站、 移动管理实体， 其中， 所述移动管理实体用于将来自所述源基站的切换请求消息转发到 所述目标基站， 并在所述切换请求消息中携带承载建立信息， 其特征在 于：
所述移动管理实体在所述切换请求消息中携带用户设备的合计最 大比特率信息即 AMBR信息。
P20730
5. 一种基于切换的承载建立系统， 用于为从源基站切换到目标基站的用户 设备建立承载， 其特征在于， 包括：
切换请求模块， 位于源基站， 用于向移动管理实体发送切换请求消 息；
消息处理模块， 位于所述移动管理实体， 用于处理接收到的所述切 换请求消息，并将承载建立信息和所述用户设备的 AMBR信息通过所述 切换请求消息发送到所述目标基站；
承载建立模块， 位于目标基站， 用于根据所述目标基站接收到的所 述切换请求消息中的所述 AMBR信息分配带宽，并才艮据所述承载建立信 息建立承载；
切换应答模块， 位于目标基站， 用于在所述承载建立模块建立承载 后， 向所述移动管理实体返回切换请求应答消息。
P20730
PCT/CN2008/071661 2008-03-12 2008-07-16 基于切换的承载建立方法及系统 WO2009111931A1 (zh)

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