WO2008014711A1 - Method, system and network side apparatus for routing optimization - Google Patents

Method, system and network side apparatus for routing optimization Download PDF

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Publication number
WO2008014711A1
WO2008014711A1 PCT/CN2007/070349 CN2007070349W WO2008014711A1 WO 2008014711 A1 WO2008014711 A1 WO 2008014711A1 CN 2007070349 W CN2007070349 W CN 2007070349W WO 2008014711 A1 WO2008014711 A1 WO 2008014711A1
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WO
WIPO (PCT)
Prior art keywords
terminal
route optimization
network side
home agent
optimization
Prior art date
Application number
PCT/CN2007/070349
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English (en)
French (fr)
Inventor
Wenliang Liang
Yong Xie
Jianjun Wu
Liang Gu
Yuankui Zhao
Original Assignee
Huawei Technologies Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2008014711A1 publication Critical patent/WO2008014711A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00Routing or path finding of packets in data switching networks

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a route optimization control method, system, and network side device.
  • a mobile node MN, Mobile Node
  • HA Home Agent
  • CN Correspondent Node
  • the mobile node in the foreign network has a home address (HoA, Home Address) and a care-of address (CoA, Care-of Address mobile node through the Binding Update (BU, Binding Update) process, registering with the home agent, the home agent processing the request, And maintain the relationship table corresponding to HoA and CoA.
  • HoA Home Address
  • CoA Care-of Address mobile node through the Binding Update
  • BU Binding Update
  • the home agent After completing the mobile access, the home agent intercepts the data packet sent to the home address of the mobile node in the home network and forwards it to the mobile node's care-of address through the tunnel.
  • the data sent by the mobile node also needs to be sent via the reverse tunnel. In this way, both-way data must pass through the home agent, and network efficiency is affected. The most obvious is the increase in hop count.
  • Route optimization is an optimization method introduced to prevent the occurrence of triangular routing, which uses a return routable process and subsequent BU procedures between the mobile node and the associated nodes, so that bidirectional data can be directly routed without having to go through the home agent.
  • the mobile node simultaneously sends a HoTI (Home Test Init)/CoTI (Care-of Test Init) message to the relevant node to be communicated, where the HoTI is forwarded by the home agent, and the CoTI is directly routed. Go to the relevant node.
  • HoTI Home Test Init
  • CoTI Care-of Test Init
  • the related node After receiving the HoTI and the CoTI, the related node sends a HoT (Home Test) message and a CoT (Care-of Test) message to the mobile node.
  • HoT Home Test
  • CoT Care-of Test
  • the mobile node calculates a binding management key (kbm) and initiates a BU/BA (Binding Acknowledge) process.
  • the related node processes the BU. If the registration is successful, a binding relationship table needs to be created, and the BA is sent to the mobile node.
  • the two-way data can be routed directly without having to go through a home agent.
  • routing optimization is also supported for the purpose of reducing hop count.
  • the mobile node can initiate route optimization according to its own wishes, and the home agent simply forwards the message ⁇ / ⁇ . Therefore, as long as the mobile node initiates the route optimization process and the relevant node does not reject, the route optimization can be successful.
  • a network service provider NSP
  • NAP Network Acces Provider
  • the charging information may be provided by the network access provider.
  • NAP Network Acces Provider
  • the purpose of the home agent billing cannot be achieved. In the same way, other operations that require home agents to control route optimization cannot be completed.
  • the present invention provides a route optimization control method, system, and network side device, so that route optimization is not determined by the terminal itself, but is controlled by the network side.
  • the invention provides a route optimization control method: route optimization of a network side control terminal.
  • the present invention provides a route optimization control system, including a network side and a terminal, and the network side includes a route optimization control module, which is specifically used for controlling route optimization of the terminal at the network side.
  • the present invention further provides a network side device, including: a receiving module, configured to receive content related to route optimization of the terminal; and a discarding module, configured to discard the content related to route optimization of the terminal.
  • the present invention further provides a network side device, comprising: a route optimization notification module, configured to send, to the terminal, a message carrying information about whether to allow it to perform route optimization.
  • a route optimization notification module configured to send, to the terminal, a message carrying information about whether to allow it to perform route optimization.
  • the route optimization of the network-side control terminal is adopted, so that the terminal needs to be controlled by the network side to complete the route optimization, so that the network-side operator can monitor the terminal operation more accurately.
  • FIG. 2 is a flow chart of an embodiment of a method for controlling route optimization according to the present invention
  • FIG. 3 is a flow chart of another embodiment of a method for controlling route optimization according to the present invention.
  • FIG. 4 is a flow chart of still another embodiment of a method for controlling route optimization according to the present invention.
  • FIG. 5 is a schematic block diagram of an embodiment of a route optimization control system of the present invention.
  • FIG. 6 is a schematic structural diagram of a first embodiment of a network side device according to the present invention.
  • FIG. 7 is a schematic structural diagram of a second embodiment of a network side device according to the present invention.
  • the network side before the terminal (such as a mobile node) completes the mobility access, the network side provides a mechanism for the home agent, the access service network, or the AAA server to control the route optimization, and utilizes the existing mechanism.
  • the network modifies, expands, or adds new messages during the mobile access process to control whether the terminal can perform route optimization in an active or passive manner, ensuring that the network operator can also choose to support route optimization or not.
  • the network side controls whether the terminal performs route optimization by actively notifying the terminal.
  • the method includes but is not limited to the following five implementation manners, specifically:
  • the home agent carries information in the binding response message, indicating whether the home agent allows the terminal to use path optimization for mobility access.
  • the following two schemes can carry this information, which are the first and second embodiments of the present invention, respectively.
  • there may be other ways of carrying information such as defining a new message between the home agent and the terminal for allowing terminal route optimization.
  • the first embodiment of the present invention During the binding update/binding response process between the terminal originating and the home agent, the home agent returns a binding response set to a flag indicating whether the terminal is allowed to perform route optimization to the terminal.
  • a specific way is to add a flag bit R in the binding response message in advance.
  • Load protocol header length Header mobile header type reserved bit (Reserved)
  • Sequence number 'J number ( Sequence# ) Lifetime (Mobility option)
  • the home agent sets the R bit according to different conditions when returning the binding response:
  • the terminal When the terminal receives the binding response with 0, it does not initiate the backhaul routable process, that is, does not send HoTI/CoTI messages, and does not perform route optimization.
  • the R bit value can be additionally defined, where values 1 and 0 are just examples.
  • the second embodiment of the present invention During the binding update/binding response process between the terminal originating and the home agent, the home agent returns an extended binding that is allowed to allow the terminal to perform route optimization.
  • the new extensions are as follows:
  • the home agent can set the R0 Permission according to different conditions when returning the binding response: 1) If the home agent allows route optimization, set R0-0K (you can set any special value indicating that route optimization is allowed);
  • the terminal When the terminal receives the binding response message of the extended R0 Pe r m i s s i on R0 - DENY, the terminal does not initiate the backhaul routable process, that is, does not send the home test trigger/transfer test trigger message.
  • the length of the new R0 Permi ss ion field is not specified, it can be 1 bit, or lengthened, such as 1 byte or 2 bytes.
  • the home agent can also carry the information of whether the terminal is allowed to perform route optimization through the home test message sent to the terminal.
  • the third embodiment of the present invention delivers an identifier (a type of indication information) that allows route optimization to the access network, and the access network passes the DHCP (Dynamic Hosting Protocol) protocol.
  • the identifier is sent to the terminal.
  • the notification to the terminal is sent to the access network by the AAA server when the terminal is initially connected to the network, and then the access network is sent to the terminal through a DHCP message.
  • the identifier for carrying out route optimization in the DHCP message sent to the terminal for controlling whether to perform route optimization needs to be transmitted between the access service networks when the mobile terminal performs roaming.
  • the authentication process of the mobile terminal accessing the WiMAX network includes notifying the terminal whether to allow the route optimization process by carrying an identifier of whether the route is allowed to be optimized through the DHCP process during the initial network access process of the terminal.
  • the related information obtained by the AAA server is obtained through the DHCP process, and mainly includes the interaction of the Informaion-Reques t and the Reply message.
  • the reply message may carry an identifier indicating whether the mobile terminal allows route optimization, including:
  • the mobile terminal initiates initial authentication.
  • the gateway (including the access router) sends an access request (Acces s-Reques t) to the home AAA server;
  • the access router may also obtain the R0I information.
  • the mobile terminal sends an information request (Information-Reques t) to the access router.
  • the access router returns a response (Reply) message carrying the identifier R0I indicating the route optimization to the mobile terminal, and the mobile terminal determines whether to perform route optimization according to the identifier.
  • the authentication response obtained by the home agent to authenticate the AAA server may also include the flag to notify the home agent whether to allow route optimization for the terminal. Furthermore, the home agent can know whether the network side allows the terminal to perform route optimization, thereby controlling the route optimization of the terminal.
  • the gateway or access router in the access network can also obtain this indication to know if route optimization is needed. In addition, if it is not allowed, appropriate control measures can be taken to prohibit the terminal from performing route optimization.
  • the AAA server optionally actively informs the home agent about this information.
  • the notification to the home agent is completed when the mobile terminal initiates a mobile IP registration request (bound update message in IPv6).
  • the home agent After receiving the initial mobile IP registration request of the mobile terminal, the home agent requests the AAA server to obtain information about the mobile terminal. In turn, the AAA server can inform the home agent whether the mobile terminal is allowed to perform route optimization.
  • the embodiment may also be modified to: after the access network element knows whether to allow the mobile terminal to perform route optimization, it is not necessary to send the route optimization indication to the mobile terminal. Instead, the network side network element (such as a home agent or access network element) directly returns a failure response message for route optimization such as rejection, or simply discards content related to route optimization (such as message or data). Control the mobile terminal for routing optimization purposes.
  • the network side network element such as a home agent or access network element
  • the fourth embodiment of the present invention In the access verification process, the AAA server delivers an identifier of the user route optimization to the authenticator, and the access router constructs a route according to whether the identifier provided by the authenticator supports the user route optimization.
  • the broadcast message is sent to the terminal. specifically is:
  • the access router constructs a Router Advertisement message, that is, sets the R0 Permission value in the following table;
  • the access router constructs a route broadcast message, which refers to a route broadcast message of the extended access router, that is, the following options are added to the route broadcast message sent by the access router to the terminal:
  • the extended R0 Permission is set to 1, which is also the default value; if route optimization is not allowed, the extended R0 Permission is set to 0.
  • the value of R0 Permission can also be other values.
  • the terminal After receiving the route broadcast message of the access router, the terminal determines whether the route optimization can be initiated according to the R0 Permission value.
  • the fifth embodiment of the present invention similar to the fourth embodiment, the AAA server delivers whether the route optimization identifier is allowed to the authenticator of the access network, and the access network passes through the route broadcast message sent by the access router. Whether the extension of the route optimization is allowed to be defined to notify the terminal.
  • the access router adds a flag bit in the Router Advertisement message sent to the terminal to indicate whether the terminal allows the route optimization.
  • the newly added flag bits are defined as follows:
  • the R value may be various values other than the above values, as long as it can distinguish between two situations in which the terminal optimization is allowed and not allowed.
  • the network side controls the route optimization of the terminal by cutting off signaling and/or data transmission related to terminal route optimization. In other words, if the network side prohibits the terminal from performing route optimization, the content related to the terminal route optimization is discarded. Specifically, messages related to terminal route optimization are discarded or data transmitted by route optimization is discarded.
  • the home agent needs to distinguish the home test trigger message or the home test message from the data packet, so that the route optimization can be controlled by using the configured information, and the sixth and seventh implementation modes are as follows.
  • the sixth embodiment of the present invention When the home agent receives the home test trigger message, the home test trigger message is discarded if the terminal is not allowed to perform route optimization.
  • the home agent when the home agent receives the home test trigger message, if the route optimization is not allowed, the home agent discards the home test trigger message. In this way, the relevant node cannot receive the home test trigger message, and the same terminal (such as the mobile node) cannot receive the home test message from the relevant node. Therefore, the terminal cannot calculate Kbm, and finally cannot trigger the binding update/binding response process to the relevant node. The packet still needs to be forwarded between the terminal and the relevant node via the home agent.
  • the seventh embodiment of the present invention When the home agent receives the home test message, the home test message is discarded if the terminal is not allowed to perform route optimization.
  • the relevant node after receiving the home test trigger message forwarded by the home agent, the relevant node returns a home test message to the terminal, and the message also needs to be forwarded by the home agent. If route optimization is not allowed, the home agent will discard this home test message. In this way, the terminal cannot receive home test messages from the relevant node. Therefore, the terminal cannot calculate Kbm, and finally cannot trigger the binding update/binding response process to the relevant node. The packet still needs to be forwarded between the terminal and the relevant node via the home agent.
  • the eighth embodiment of the present invention when the home agent receives the home test trigger message, The home test trigger message is discarded in the case of route optimization, and the home test message carrying the route optimization is not directly returned to the terminal.
  • the home test message carrying the allowed/disabled terminal for route optimization can be seen in the following table:
  • Table 5 New extension R0 Permi ss ion in the home test message
  • the home agent receives the home test trigger message, if the route optimization is not allowed, the home agent does not forward the home test trigger message, and directly returns to the home test message, carrying The R0 Permi ss ion option informs the terminal that the home agent does not allow route optimization at this time.
  • Other domains such as Home Nonce Index, Home ini Cookie, Home Keygen Token
  • the terminal cannot calculate Kbm and does not trigger the binding update/binding response process to the relevant node. The packet still needs to be forwarded between the terminal and the relevant node via the home agent.
  • the access network element discards data accessed by using route optimization.
  • the AAA server delivers an attribute that does not support terminal route optimization to the authenticator, and in the case that the NAI (Network Acces s Identation, Network Access Identifier) corresponds to the care-of address,
  • NAI Network Acces s Identation, Network Access Identifier
  • the access router discards the uplink data whose destination address is not the home agent, and/or discards the downlink data whose source address is not the home agent. details as follows:
  • the AAA server delivers whether to support the attribute of the terminal route optimization to the authenticator
  • the access service network gateway (ASN-GW) maintains the correspondence between the NAI and the care-of address;
  • the network side network element such as a home agent, an access network authenticator, an access router, or a DHCP proxy, after receiving a route reachability test message or any data of a terminal that is not allowed to perform route optimization , discard it.
  • the network side network element such as a home agent, an access network authenticator, an access router, or a DHCP proxy, responds to a corresponding failure or after receiving a routing request from a terminal that is not allowed to perform route optimization. Reject the message.
  • the present invention designs a set of mechanisms for controlling whether to perform route optimization on the network side (AAA server, home agent, access router, or access service gateway, etc.), and uses the network side to actively notify the terminal whether to perform routing.
  • Optimize or discard content related to terminal route optimization (messages related to route optimization and/or data transmitted by route optimization) to control terminal route optimization, ensuring that network operators can also choose to support route optimization or not.
  • the purpose of billing by the network operator can be achieved.
  • the present invention also provides an embodiment of a route optimization control system, including a network side and a terminal.
  • the network side includes at least a route optimization control module, and optionally, a home agent or an access network element and a related node.
  • the route optimization control module is configured to control route optimization of the terminal at the network side, where the home agent is used to forward data.
  • the related node is used to transmit data in the terminal roaming situation and the terminal.
  • the terminal includes a route optimization message decoding module, configured to receive information about whether to perform route optimization on the network side, and determine whether the network allows the terminal to communicate with the relevant node in a route optimization manner.
  • the route optimization control module may be set in a home agent or an access network element, or may be separately set.
  • the route optimization control module is specifically configured to:
  • the home agent In the binding update/binding response process between the terminal initiation and the home agent, the home agent is instructed to return a binding response set to a flag indicating whether the terminal is allowed to perform route optimization to the terminal;
  • the network element In the process of binding update/binding response between the terminal origination and the home agent, indicating the home agent or The network element sends the identifier to the terminal through a DHCP process;
  • the AAA server is instructed to send an identifier of the user route optimization to the authenticator, and the access router is added to the identifier provided by the authenticator to support the user route optimization to construct a route broadcast message and send the message to the terminal.
  • the identifier is a defined bit indication bit that allows route optimization;
  • the element notifies the terminal by using an extension of the access router that defines whether the route optimization is allowed in the route broadcast message sent by the access router;
  • the home agent When the home agent receives the home test trigger message, it indicates whether the home agent discards the home test trigger message according to whether the terminal is allowed to perform route optimization, and whether to directly return the home test message carrying the permission terminal for route optimization to the terminal.
  • the terminal After receiving the setting indication of whether the route optimization is performed on the network side, the terminal uses the road node communication. Yes, the terminal is instructed to bypass the home agent to directly communicate with the relevant node, otherwise the terminal is still instructed to communicate with the relevant node through the home agent.
  • the route optimization control module may be specifically configured to:
  • the home agent When the home agent receives the home test trigger message, the home agent is instructed to discard the home test trigger message according to whether the terminal is allowed to perform route optimization;
  • the home agent When the home agent receives the home test message, the home agent is instructed to decide whether to discard the home test message according to whether the terminal is allowed to perform route optimization;
  • FIG. 6 is a schematic structural diagram of a first embodiment of a network side device according to an embodiment of the present invention.
  • the network device in this embodiment includes a receiving module 61 and a discarding module 62.
  • the internal structure and connection relationship are further introduced below in conjunction with the working principle of the device.
  • the content related to the route optimization of the terminal specifically includes: a message related to terminal route optimization, or data transmitted by using a route optimization manner.
  • the discarding module 62 discards the content related to the route optimization of the terminal received by the receiving module 61.
  • the discarding module 62 is specifically a message discarding module, and is configured to discard the received message related to the terminal routing optimization.
  • the discarding module 62 is specifically a data discarding module, and is configured to discard the received data that is transmitted by using the route optimization manner.
  • the discarded data includes uplink data whose destination address is not a home agent, and/or the source address is not the downlink data of the home agent.
  • the network side device in this embodiment may include a home agent, and may also include an access network element, such as an access router.
  • FIG. 7 is a schematic structural diagram of a second embodiment of a network side device according to the present disclosure.
  • the network side device in this embodiment may be a home agent.
  • the device includes a route optimization notification module
  • the method is configured to send, to the terminal, a message carrying whether to allow route optimization information, where the message may be a home test message or a binding response message.
  • the route optimization notification module 71 may specifically be a binding response module, configured to: in the process of binding update/binding response between the terminal initiation and the home agent, return the binding information carrying the information whether to allow the terminal to perform route optimization. Answer to the terminal.
  • the route optimization notification module 71 can directly set whether the network side allows the terminal to perform route optimization, or the route optimization notification module 71 can receive an indication from other devices whether to allow the terminal to perform route optimization.
  • the network side device further includes an indication information receiving module.
  • the receiving information is used to receive the information about whether the terminal is optimized by the AAA server, and the route optimization notification module 71 sends a message carrying the information about whether the terminal is allowed to perform route optimization to the terminal according to the indication information.
  • the network side device in this embodiment may also be an access network element, such as an access router.
  • Adopt After the above design, after the network side discards the message about the route optimization of the terminal or discards the data transmitted by the route optimization mode, the terminal can only communicate with the relevant node through the home agent because the route optimization cannot be completed. If the network side does not discard the related message or data, the route optimization is completed, and the terminal can bypass the home agent to communicate with the relevant node.
  • the network side internal route optimization control module is used to control whether route optimization is allowed, or the route optimization control module and the route optimization message decoding module in the terminal jointly determine whether to allow route optimization and ensure Network operators can also choose to support route optimization or not, and can achieve billing by network operators.
  • terminal as used in the embodiments of the present invention may be a mobile terminal or a mobile node, including but not limited to IPv6, and/or an IPv4 mobile terminal.
  • IPv6 IPv6
  • IPv4 IPv4 mobile terminal.
  • the method and system for controlling route optimization provided by the embodiments of the present invention are described in detail.
  • the principles and implementation manners of the embodiments of the present invention are described in the following. The description is only for helping to understand the method and the core idea of the embodiment of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the embodiment of the present invention, there are changes in the specific implementation manner and application scope. In summary, the content of the specification should not be construed as limiting the invention.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Mobile Radio Communication Systems (AREA)

Description

路由优化的控制方法、 系统及网络侧设备
本申请要求于 2006 年 7 月 24 日提交中国专利局、 申请号为 200610103273.4、发明名称为 "路由优化的控制方法及其系统"的中国专利申 请的优先权, 其全部内容通过引用结合在本申请中。
技术领域
本发明涉及通信技术领域,特别是涉及一种路由优化的控制方法、 系统及 网络侧设备。
背景技术
在移动接入过程中,包含三个相关功能实体:移动节点(MN, Mobile Node), 家乡代理 (HA, Home Agent ) 以及相关节点 ( CN, Correspondent Node )。 处 于外地网络的移动节点拥有家乡地址( HoA, Home Address )以及转交地址( CoA, Care-of Address 移动节点通过绑定更新( BU, Binding Update )过程, 向 家乡代理进行注册, 家乡代理处理请求, 并且维护 HoA和 CoA对应的关系表。
在完成移动接入后,家乡代理在家乡网络截取发往移动节点的家乡地址的 数据包, 并且通过隧道转发到移动节点的转交地址。移动节点发出的数据也需 要经由反向隧道发送。 这样, 双向的数据都必须经过家乡代理, 网络效率受到 影响, 最明显的就是跳数增加。
为解决上述问题, 引入了路由优化(RO, Route Optimize)技术。 路由优 化是为了防止出现三角路由而引入的一种优化方法,其采用返回可路由过程以 及后续移动节点和相关节点之间的 BU过程, 使得双向的数据可以不必经由家 乡代理而直接路由。
路由优化的具体过程可以参阅图 1。
101、 首先, 移动节点同时发送 HoTI (Home Test Init, 家乡测试触发) /CoTI (Care-of Test Init, 转交测试触发) 消息到要通信的相关节点, 其中 HoTI经过家乡代理转发, CoTI直接路由发送到相关节点。
102、 在相关节点收到所述 HoTI以及 CoTI以后, 发送 HoT (Home Test, 家乡测试) 消息以及 CoT (Care-of Test, 转交测试) 消息给移动节点。
103、 移动节点计算出 kbm (binding management key, 绑定管理密钥) 并且发起 BU/BA (Binding Acknowledge, 绑定应答)过程。 104、 相关节点处理 BU, 如果注册成功, 则需要创建一个绑定关系表, 并 发送 BA给移动节点。
105、 此后,双向的数据可以不必经由家乡代理而直接路由。
另夕卜, 在 WiMax ( Wor ldwide Interoperabi l i ty Microwave Acces s , 微 波接入全球互通) 网络中, 同样出于减少跳数的考虑也支持路由优化。
在实现本发明的过程中,发明人发现现有技术中至少存在如下问题: 移动 节点可以根据自身的希望发起路由优化, 而且家乡代理只是简单的转发 ΗοΤ/ΗοΤΙ消息。 于是, 只要移动节点发起了路由优化过程, 相关节点不拒绝, 路由优化就能够成功。
在 WiMax网络中,如果网络服务提供商(NSP, Network Service Provider) 对于网络接入提供商 (NAP, Network Acces s Provider)在计费上存在信任关 系, 计费信息可以由网络接入提供商提供。 但是, 对于另外一种情况, 即对于 希望独立计费的网络服务提供商而言, 由于家乡代理无法对路由优化进行控 制, 无法达到家乡代理计费的目的。 同理, 其他需要家乡代理对路由优化进行 控制的操作也无法完成。
发明内容
本发明提供一种路由优化的控制方法、 系统及网络侧设备,使得路由优化 不由终端自身决定, 而是由网络侧进行控制。
本发明提供一种路由优化的控制方法: 网络侧控制终端的路由优化。
本发明提供一种路由优化的控制系统, 包括网络侧和终端, 所述网络侧包 括路由优化控制模块, 具体用于在网络侧控制终端的路由优化。
本发明还提供一种网络侧设备, 包括: 接收模块, 用于接收与终端的路由 优化相关的内容; 丢弃模块, 用于将所述与终端的路由优化相关的内容予以丢 弃。
本发明还提供一种网络侧设备, 包括: 路由优化通知模块, 用于向终端发 送携带有是否允许其进行路由优化的信息的消息。
通过以上技术方案可以看出,在本发明中, 由于采用网络侧控制终端的路 由优化,使得终端完成路由优化需要受网络侧的控制,从而使得网络侧运行者 可以更准确的监控终端操作。 附图说明
图 1是现有技术路由优化的流程图;
图 2是本发明路由优化的控制方法一实施方式的流程图;
图 3是本发明路由优化的控制方法另一实施方式的流程图;
图 4是本发明路由优化的控制方法又一实施方式的流程图;
图 5是本发明路由优化的控制系统实施例的原理框图;
图 6是本发明网络侧设备的第一实施例结构示意图;
图 7是本发明网络侧设备的第二实施例结构示意图。
具体实施方式
本发明实施例中, 在终端(如移动节点)完成移动性接入前, 在网络侧提 供一个让家乡代理、接入服务网或 AAA服务器等有能力对路由优化进行控制的 机制, 利用现有网络在移动接入过程中修改、扩展或新增的消息, 以主动或被 动方式控制终端是否可以进行路由优化,保证网络运营者也可以选择支持路由 优化还是不支持。
为清楚、充分地说明本发明实施例,这里列举网络侧采用扩展消息或修改 现有消息的方法以主动通知终端是否进行路由优化,以及列举在进行路由优化 对上述两个例子, 又分别具体描述了多个实施方式。
以下结合实施方式和附图, 对本发明实施例进行伴细描述。
一、 网络侧通过主动通知终端的方式控制终端是否进行路由优化。本方法 包括但不限于以下 5个实施方式, 具体是:
家乡代理在绑定应答消息中携带信息,指示家乡代理是否允许终端采用路 由优化进行移动性接入。可以有如下 2种方案携带这个信息,分别是本发明第 一、 第二实施方式。 除此两方案外, 还可以有其他携带信息的方式, 比如另外 定义家乡代理和终端之间用于是否允许终端路由优化的新消息。
1、 本发明第一实施方式: 家乡代理在终端发起和家乡代理之间的绑定更 新 /绑定应答过程中 , 返回设置有是否允许终端进行路由优化的标志位的绑定 应答给终端。 一种具体的方式是预先在绑定应答消息中新增标志位 R。 负荷协议 头长度 ( Header 移动头类型 保留位 (Reserved)
( Payload-Pro length ) ( Mhtype )
to )
校验值 (Checksum) 状态 K R 保留位 (Reserved)
( Status )
序歹 'J号 ( Sequence# ) 有效期 (Lifetime) 移动选项 (Mobility option )
: 在绑定应答消息中设置标志位 R
当终端发起和家乡代理之间的绑定更新 /绑定应答过程的时候, 家乡代理 在返回绑定应答的时候, 根据不同情况设置 R位:
1)如果家乡代理允许路由优化, 则置 R位为 1;
2)如果家乡代理不允许路由优化, 则置 R位为 0。
当终端收到置 0 的绑定应答后, 不发起回程可路由过程, 即不发送 HoTI/CoTI消息, 不进行路由优化。 这里, R位值可另外定义, 这里取值 1和 0只是作为例子。
2、 本发明第二实施方式: 家乡代理在终端发起和家乡代理之间的绑定更 新 /绑定应答过程中 , 返回新增有是否允许终端进行路由优化的扩展的绑定应 答给终端。 所述新增扩展如下:
Figure imgf000006_0001
表二: 在绑定应答消息中新增扩展 R0 Permission
当终端发起和家乡代理之间的绑定更新 /绑定应答过程时, 家乡代理在返 回绑定应答的时候, 可以才 据不同情况设置 R0 Permission: 1 )如果家乡代理允许路由优化, 则置 R0-0K (可以设置任意表示允许路由 优化的特殊值);
2 )如果家乡代理不允许路由优化, 则置 R0-DENY (可以设置任意表示不允 许路由优化的特殊值);
当终端收到扩展 R0 Pe r m i s s i on置 R0 - DENY的绑定应答消息以后 , 不发起 回程可路由过程, 即不发送家乡测试触发 /转交测试触发消息。
新增的 R0 Permi ss ion域长度不规定, 可以是 1位, 或者加长, 比如 1 字节或者 2字节。
以上两种实施方式都是建立在终端按照本发明实施例的要求进行的基础 上的。 除了上述两种方式外, 家乡代理也可以通过发给终端的家乡测试消息携 带是否允许终端进行路由优化的信息。
3、 本发明第三实施方式: AAA服务器下发是否允许路由优化的标识(指 示 信 息 的 一 种 ) 给 接 入 网 络 , 接 入 网 络 通 过 DHCP ( DynamicHos tConf igurat ionProtocol , 动态主机分配协议 )过程将所述标识 发给终端。
所述对终端的通知是:通过在终端初始入网时由 AAA服务器下发给接入网 络, 进而接入网络通过 DHCP消息发给该终端。 对于控制是否进行路由优化而 在发送给终端的 DHCP消息中携带是否进行路由优化的标识, 需要在移动终端 进行漫游时在接入服务网间进行传递。
参阅图 2 , 是移动终端接入 WiMAX网络的认证过程 , 包括在终端初始入网 过程中通过 DHCP过程携带是否允许进行路由优化的标识来告知终端是否允许 进行路由优化过程。移动终端在接入认证过程中,从 AAA服务器获得的相关信 息是通过 DHCP过程得到的, 主要包括 Informta ion-Reques t和 Reply两条消 息的交互。在 Reply消息里可以携带一标识,指示移动终端是否允许路由优化, 具体包括:
201、 移动终端发起初始认证;
202、 网关 (包含接入路由器) 向归属 AAA 服务器发送接入请求 ( Acces s-Reques t );
203、 分配家乡代理和家乡链路(HL, Home Link ); 204、 和接入确认(Access Accept )消息一起返回一个指示路由优化的标 识 R0I (路由优化指示), 同家乡代理、 家乡链路信息一 送到接入网, 该 标识指示移动终端是否进行路由优化;
205、 在接入网关上存储接收到的上述信息; 另外, 接入路由器也可获得 该 R0I信息;
206、 完成认证。
207、 移动终端向接入路由器发送信息请求 ( Informat ion-Reques t );
208、接入路由器返回携带指示路由优化的标识 R0I的应答(Reply )消息 给移动终端 , 移动终端根据该标识决定是否进行路由优化。
同时, 当移动终端发起注册请求时, 家乡代理向 AAA服务器进行认证所获 得的认证响应中也可以包含这个标志 ,以通知家乡代理是否允许对此终端进行 路由优化。 进而, 家乡代理即可知道网络侧是否允许终端进行路由优化, 从而 对终端的路由优化进行控制。
在此过程中,接入网络中的网关或接入路由器也可以获得该指示,从而知 道是否需要进行路由优化。进而如果不允许的话,可以采取适当的控制手段禁 止终端进行路由优化。同时, AAA服务器可选地主动通知家乡代理关于此信息。
对家乡代理的通知, 是当移动终端发起移动 IP注册请求( IPv6中是绑定 更新消息 )时完成的。 当家乡代理收到该移动终端的初始移动 IP注册请求后, 向 AAA服务器请求获得该移动终端的相关信息。进而 AAA服务器可以通知家乡 代理是否允许该移动终端进行路由优化。
本实施方式还可变更为:在接入网络网元都知道是否允许此移动终端进行 路由优化后, 无需将此路由优化指示发给移动终端。 而是在网络侧通过网络侧 网元(如家乡代理或接入网络网元)直接返回拒绝等针对路由优化的失败响应 消息, 或简单丢弃与路由优化相关的内容(如消息或数据)而达到控制移动终 端进行路由优化的目的。
4、 本发明第四实施方式: 在接入验证过程中, AAA服务器下发是否支持 用户路由优化的标识到认证器 ,接入路由器依据所述认证器提供的是否支持用 户路由优化的属性构造路由广播消息并发给终端。 具体是:
1 )在移动性接入验证过程中, AAA服务器下发是否支持用户路由优化的 标识到认证器 ( Authenticator );
2 ) 依据认证器向接入路由器提供的信息, 接入路由器构造路由广播 ( Router Advertisement ) 消息, 即设置下表中的 R0 Permission值;
所述接入路由器构造路由广播消息 , 是指扩展接入路由器的路由广播消 息 , 即在接入路由器发送给终端的路由广播消息中加入如下选项:
1 8 9 16 17 24 25 32
Figure imgf000009_0001
表三: 在路由广播消息中新增扩展
其中, 如果允许路由优化, 扩展 R0 Permission设置为 1, 这也是默认值; 如果不允许路由优化, 扩展 R0 Permission设置为 0。 这里 R0 Permission的 取值还可以是其他数值。
3)终端收到接入路由器的路由广播消息以后, 根据 R0 Permission值判 断是否可以发起路由优化。
5、 本发明第五实施方式: 类似于第四实施方式, AAA服务器下发是否允 许路由优化标识给接入网的认证器 ,接入网通过接入路由器在其发送的路由广 播消息中的所定义的是否允许路由优化的扩展来通知终端。
具体是接入路由器在发送给终端的路由广播( Router Advertisement )消 息中新增标志位,指示终端是否允许其进行路由优化。所述新增标志位定义如 下:
0 12 345 6 7 8 9 0 12 345 67 8 9 01 2 34 56 7 89 0 1 类型 (Type) 编码(Code) 检测量(Checksum)
Cur Hop Limit M 0 H R 保留 路由器生命周期 (Router
( Reserved ) Lif et ime )
可达时间 (Reachable Time )
重传时间 (Retransmission Timer )
选项 ( Options .. . )
表四: 路由广播消息中新增的 R标识位
当终端收到携带所述新增标志位的路由广播消息时, 根据不同情况设置 R 标志位:
1 )如果接入路由器允许路由优化, 则置 R为 1 ;
2 )如果接入路由器不允许路由优化, 则置 R为 0。
当然, 所述 R值可以是除上述值外的各种值, 只要可以区分允许与不允许 终端路由优化的两种情况即可。
二、 网络侧通过切断与终端路由优化相关的信令和 /或数据传输来控制终 端的路由优化。 换而言之, 如果网络侧禁止终端进行路由优化, 则丢弃与终端 路由优化相关的内容。具体而言,丢弃与终端路由优化相关的消息或丢弃采用 路由优化方式传输的数据。
在移动性接入初始验证过程中 ,家乡代理需要从数据包中区分出家乡测试 触发消息或者家乡测试消息 , 于是就可以利用配置的信息对路由优化进行控 制, 有如下第六、 七实施方式。
6、 本发明第六实施方式: 在家乡代理收到家乡测试触发消息时, 在不允 许终端进行路由优化情况下丢弃所述家乡测试触发消息。
参阅图 3, 在移动性接入初始验证过程中, 当家乡代理收到家乡测试触发 消息的时候, 如果不允许路由优化, 家乡代理就丢弃这个家乡测试触发消息。 这样, 相关节点无法收到家乡测试触发消息, 同样终端(如移动节点)无法收 到来自相关节点的家乡测试消息。 于是, 终端无法计算出 Kbm, 最终无法触发 到相关节点的绑定更新 /绑定应答过程。 数据包仍然需要经由家乡代理在终端 和相关节点之间转发。
7、 本发明第七实施方式: 在家乡代理收到家乡测试消息时, 在不允许终 端进行路由优化情况下丢弃所述家乡测试消息。
参阅图 4 , 在移动性接入初始验证过程中, 相关节点收到家乡代理转发来 的家乡测试触发消息以后,会返回家乡测试消息到终端,这个消息同样需要家 乡代理转发。如果不允许路由优化,家乡代理就丢弃这个家乡测试消息。这样, 终端无法收到来自相关节点的家乡测试消息。 于是, 终端无法计算出 Kbm, 最 终无法触发到相关节点的绑定更新 /绑定应答过程。 数据包仍然需要经由家乡 代理在终端和相关节点之间转发。
8、 本发明第八实施方式: 在家乡代理收到家乡测试触发消息时, 在不允 许路由优化情况下丢弃所述家乡测试触发消息,并且直接返回携带不允许终端 进行路由优化的家乡测试消息给终端。 所述携带允许 /不允许终端进行路由优 化的家乡测试消息可参见下表:
Figure imgf000011_0001
表五: 在家乡测试消息中新增扩展 R0 Permi s s ion 当家乡代理收到家乡测试触发消息的时候,如果不允许路由优化, 家乡代 理不转发家乡测试触发消息,并且直接返回家乡测试消息,携带 R0 Permi s s ion 选项,通知终端此时家乡代理不允许路由优化,其他域(例如 Home Nonce Index, Home ini t Cookie, Home Keygen Token)可以都设置为空。 于是, 终端无法计 算出 Kbm, 也不会触发到相关节点的绑定更新 /绑定应答过程。 数据包仍然需 要经由家乡代理在终端和相关节点之间转发。
9、 本发明第九实施方式: 接入网络网元丢弃采用路由优化方式接入的数 据。 例如, 在接入验证过程中, AAA服务器下发不支持终端路由优化的属性到 认证器, 而且在 NAI ( Network Acces s Ident i ty, 网络接入标识)对应于转 交地址情况下,在进出接入路由器的与转交地址相关的数据中,接入路由器丢 弃目的地址不是家乡代理的上行数据,和 /或,丢弃源地址不是家乡代理的下行 数据。 具体如下:
1 )在接入验证过程中, AAA服务器下发是否支持终端路由优化的属性到 认证器;
2 )接入服务网网关(ASN-GW )维护 NAI以及转交地址的对应关系;
3 )如果路由优化是不支持的, 那么所有该转交地址发送上来的数据包, 以及发送给该转交地址的数据包需要进行一次过滤。具体而言,如果上行数据 目的地址不是家乡代理,和 /或,下行数据的源地址不是家乡代理,这样的数据 包都将被丢弃。
10、 本发明第十实施方式: 网络侧网元如归属代理、 接入网认证器、接入 路由器或 DHCP代理在收到不允许进行路由优化的终端的路由可达性测试消息 或任何数据后, 将其丢弃。
11、 本发明第十一实施方式: 网络侧网元如归属代理、 接入网认证器、 接 入路由器或 DHCP代理在收到不允许进行路由优化的终端的路由请求后, 响应 相应的失败或拒绝消息。
从以上可以看出, 本发明通过在网络侧(AAA服务器、 家乡代理、 接入路 由器或接入服务网关等)设计了一套控制是否进行路由优化的机制, 采用网络 侧主动通知终端是否进行路由优化或丢弃与终端路由优化相关的内容(与路由 优化相关的消息和 /或采用路由优化方式传输的数据 )来控制终端路由优化的 方法,保证网络运营者也可以选择支持路由优化还是不支持,可以实现由网络 运营者进行计费等目的。
本发明还提供一种路由优化的控制系统实施例, 包括网络侧和终端。所述 网络侧至少包括路由优化控制模块,可选的,还可以包括家乡代理或接入网络 网元以及相关节点。 所述路由优化控制模块用于在网络侧控制终端的路由优 化, 所述家乡代理用于转发数据。所述相关节点用于在终端漫游情况下和终端 传输数据。所述终端包括路由优化消息解码模块, 用于接收网络侧的关于是否 进行路由优化的信息,判断出网络是否允许此终端采用路由优化的方式与相关 节点通信。 需要说明的是, 所述路由优化控制模块可以设置于家乡代理或接入 网络网元中, 也可以单独设置。
所述路由优化控制模块具体用于:
在终端发起和家乡代理之间的绑定更新 /绑定应答过程中 , 指示家乡代理 返回设置有是否允许终端进行路由优化的标志位的绑定应答给终端;
或者:
在终端发起和家乡代理之间的绑定更新 /绑定应答过程中 , 指示家乡代理 或者 网络网元通过 DHCP过程将所述标识发给终端;
或者
在接入验证过程中,指示 AAA服务器下发是否支持用户路由优化的标识到 认证器,并指示接入路由器加入所述认证器提供的是否支持用户路由优化的标 识以构造路由广播消息并发给终端,所述标识为定义的是否允许路由优化的比 特指示位;
或者 元通过接入路由器在其发送的路由广播消息中的所定义的是否允许路由优化 的扩展来通知终端;
或者
在家乡代理收到家乡测试触发消息时,根据是否允许终端进行路由优化来 指示家乡代理是否丢弃所述家乡测试触发消息,以及是否直接返回携带允许终 端进行路由优化的家乡测试消息给终端。
所述终端在接收到网络侧的上述是否进行路由优化的设置指示后,采用路 节点通信。是则指示终端绕过家乡代理直接和相关节点通信, 否则仍指示终端 经过家乡代理与相关节点通信。
在其他实施方式中, 所述路由优化控制模块还可以具体用于:
在家乡代理收到家乡测试触发消息时,根据是否允许终端进行路由优化来 指示家乡代理是否丢弃所述家乡测试触发消息;
或者
在家乡代理收到家乡测试消息时,根据是否允许终端进行路由优化来指示 家乡代理决定是否丢弃所述家乡测试消息;
或者在接入验证过程中 ,指示 AAA服务器下发不支持终端路由优化的属性 到认证器, 而且在 NAI对应于转交地址情况下,在进出接入路由器的与转交地 址相关的数据中, 丢弃目的地址不是家乡代理的上行数据, 和 /或, 丢弃源地 址不是家乡代理的下行数据。 请参阅图 6 , 其为本发明实施例中的网络侧设备第一实施例结构示意图。 本实施例中的网络设备包括接收模块 61和丢弃模块 62。 下面结合该设备的工 作原理, 进一步介绍其内部结构以及连接关系。
由接收模块 61接收与终端的路由优化相关的内容。 具体而言, 所述与终 端的路由优化相关的内容具体包括: 与终端路由优化相关的消息,或者是采用 路由优化方式传输的数据。进而,丢弃模块 62将接收模块 61接收到的与终端 的路由优化相关的内容予以丢弃。 具体而言, 当接收模块 61接收到的是与终 端路由优化相关的消息时, 丢弃模块 62具体为消息丢弃模块, 用于将所述接 收到的与终端路由优化相关的消息予以丢弃。 当接收模块 61接收到的是采用 路由优化方式传输的数据时, 丢弃模块 62具体为数据丢弃模块, 用于将所述 接收到的采用路由优化方式传输的数据予以丢弃。具体而言, 所述予以丢弃的 数据包括目的地址不是家乡代理的上行数据,和 /或,源地址不是家乡代理的下 行数据。
本实施例中所述的网络侧设备可以包括家乡代理,也可以包括接入网络网 元, 例如接入路由器。
请参阅图 7 , 其为本发明公开的网络侧设备第二实施例结构示意图。 本实施例中的网络侧设备可以是家乡代理。该设备包括路由优化通知模块
71 , 用于向终端发送携带有是否允许其进行路由优化信息的消息, 所述消息可 以是家乡测试消息, 也可以是绑定应答消息。 例如, 路由优化通知模块 71具 体可以是绑定应答模块, 用于在所述终端发起和家乡代理之间的绑定更新 /绑 定应答过程中, 返回携带是否允许终端进行路由优化的信息的绑定应答给终 端。
本实施例可以直接在路由优化通知模块 71上设置网络侧是否允许终端进 行路由优化, 也可以是路由优化通知模块 71从其他设备接收是否允许终端进 行路由优化的指示。 例如, 可选的, 所述网络侧设备还包括指示信息接收模块
72 , 用于接收 AAA服务器下发的是否支持终端路由优化的指示信息, 进而, 路 由优化通知模块 71根据所述指示信息, 将携带是否允许终端进行路由优化的 信息的消息发送给终端。
本实施例中的网络侧设备还可以是接入网络网元, 例如接入路由器。采用 上述设计后 ,在网络侧丢弃有关终端路由优化的消息或丢弃采用路由优化方式 传输的数据后, 由于无法完成路由优化, 因此终端只能经过家乡代理与相关节 点通信。 如果网络侧不丢弃有关消息或数据, 则路由优化完成, 终端可以绕过 家乡代理与相关节点通信。
从以上技术方案可以看出,本发明实施例采用网络侧内路由优化控制模块 来控制是否允许路由优化,或者结合路由优化控制模块和终端内的路由优化消 息解码模块共同决定是否允许路由优化,保证网络运营者也可以选择支持路由 优化还是不支持, 可以实现由网络运营者进行计费等目的。
本发明实施例所称 "终端"可以是移动终端或者移动节点, 包括但不限于 IPv6 ,和 /或 IPv4移动终端。 以上对本发明实施例所提供的一种路由优化的控 制方法、 系统及网络侧设备进行了详细介绍,本文中应用了具体个例对本发明 实施例的原理及实施方式进行了阐述,以上实施例的说明只是用于帮助理解本 发明实施例的方法及其核心思想; 同时, 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,综上所述, 本说明书内容不应理解为对本发明的限制。

Claims

权 利 要 求
1、 一种路由优化的控制方法, 其特征在于:
网络侧控制终端的路由优化。
2、 根据权利要求 1所述的控制方法, 其特征在于, 所述网络侧控制终端 的路由优化具体包括:
网络侧通知终端是否允许其进行路由优化;
如果所述网络侧通知的信息是允许所述终端进行路由优化,则所述终端在 需要时进行路由优化,如果所述网络侧通知的信息是禁止所述终端进行路由优 化, 则所述终端不进行路由优化。
3、 根据权利要求 2所述的方法, 其特征在于: 所述网络侧通知终端是否 允许其进行路由优化具体包括:
家乡代理通知终端是否允许其进行路由优化。
4、 根据权利要求 3所述的方法, 其特征在于, 所述家乡代理通知终端是 否允许其进行路由优化具体包括:
所述家乡代理在终端发起和家乡代理之间的绑定更新 /绑定应答过程中 , 返回设置有是否允许终端进行路由优化的标志位的绑定应答给终端;
或者
所述家乡代理在终端发起和家乡代理之间的绑定更新 /绑定应答过程中 , 或者
所述家乡代理向终端发送携带有是否允许终端进行路由优化信息的家乡 测试消息。
5、 根据权利要求 3所述的方法, 其特征在于, 在所述家乡代理通知终端 是否允许其进行路由优化之前还包括:
所述家乡代理接收网络侧下发的是否允许终端进行路由优化的指示信息。
6、 根据权利要求 2所述的方法, 其特征在于: 所述网络侧通知终端是否 允许其进行路由优化具体包括:
接入网络网元通知终端是否允许其进行路由优化。
7、 根据权利要求 6所述的方法, 其特征在于, 在所述接入网络网元通知 终端是否允许其进行路由优化之前还包括:
接入网络网元接收网络侧下发的是否允许路由优化的指示信息。
8、 根据权利要求 7所述的方法, 其特征在于, 所述接入网络网元通知终 端是否允许其进行路由优化具体包括:
接入网络网元通过动态主机分配协议 DHCP过程或路由广播消息将所述指 示信息发给终端。
9、 根据权利要求 1所述的方法, 其特征在于, 所述网络侧控制终端的路 由优化具体包括:
如果网络侧禁止终端进行路由优化 ,则所述网络侧丢弃与终端路由优化相 关的内容。
10、根据权利要求 9所述的方法, 其特征在于, 所述网络侧丢弃与终端路 由优化相关的内容具体包括:
家乡代理丢弃与终端路由优化相关的消息。
11、 根据权利要求 10所述的方法, 其特征在于, 所述家乡代理丢弃与终 端路由优化相关的消息具体包括:
家乡代理在收到家乡测试触发消息后丢弃所述家乡测试触发消息; 或者
家乡代理在收到家乡测试消息后丢弃所述家乡测试消息。
12、 根据权利要求 10所述的方法, 其特征在于, 所述家乡代理丢弃与终 端路由优化相关的消息具体包括:家乡代理在收到家乡测试触发消息后丢弃所 述家乡测试触发消息;
在所述家乡代理丢弃所述家乡测试触发消息后还包括:所述家乡代理直接 返回携带不允许终端进行路由优化指示的家乡测试消息给终端。
13、根据权利要求 9所述的方法, 其特征在于, 所述网络侧丢弃与终端路 由优化相关的内容具体包括:
接入网络网元丢弃采用路由优化方式传输的数据。
14、 根据权利要求 13所述的方法, 其特征在于, 所述接入网络网元丢弃 采用路由优化方式传输的数据具体包括:
在进出接入路由器的、与转交地址相关的数据中,丢弃目的地址不是家乡 代理的上行数据, 和 /或, 源地址不是家乡代理的下行数据。
15、 根据权利要求 14所述的方法, 其特征在于, 在所述丢弃目的地址不 是家乡代理的上行数据,和 /或, 源地址不是家乡代理的下行数据之前还包括: 认证器接收网络侧下发的是否支持终端路由优化的属性并告知所述接入 路由器。
16、根据权利要求 1所述的方法, 其特征在于: 所述网络侧控制终端的路 由优化具体包括:
如果网络侧禁止终端进行路由优化,则切断与所述终端路由优化相关的信 令和 /或数据传输。
17、 一种路由优化的控制系统, 包括网络侧和终端, 其特征在于, 所述网 络侧包括路由优化控制模块, 具体用于在网络侧控制终端的路由优化。
18、 根据权利要求 17所述的控制系统, 其特征在于, 所述网络侧还包括 家乡代理, 所述路由优化控制模块,具体用于指示所述家乡代理通知终端是否 允许其进行路由优化。
19、 根据权利要求 17所述的控制系统, 其特征在于, 所述网络侧还包括 接入网络网元, 所述路由优化控制模块,具体用于指示所述接入网络网元通知 终端是否允许其进行路由优化。
20、 根据权利要求 17所述的控制系统, 其特征在于, 所述路由优化控制 模块,具体用于当网络侧不允许终端进行路由优化时,指示家乡代理丢弃与终 端路由优化相关的消息。
21、 根据权利要求 17所述的控制系统, 其特征在于, 所述路由优化控制 模块,具体用于当网络侧不允许终端进行路由优化时,指示接入网络网元丢弃 采用路由优化方式传输的数据。
22、根据权利要求 18或 19所述的控制系统, 其特征在于, 所述终端包括 路由优化消息解码模块,用于根据接收到的来自所述网络侧路由优化控制模块 的指示信息判断是否进行路由优化。
23、 一种网络侧设备, 其特征在于, 包括:
接收模块, 用于接收与终端的路由优化相关的内容;
丢弃模块, 用于将所述与终端的路由优化相关的内容予以丢弃。
24、 根据权利要求 23所述的网络侧设备, 其特征在于, 所述与终端的路 由优化相关的内容具体包括: 与终端路由优化相关的消息;
所述丢弃模块具体为消息丢弃模块,用于将所述接收到的与终端路由优化 相关的消息予以丢弃。
25、 根据权利要求 23所述的网络侧设备, 其特征在于, 所述与终端的路 由优化相关的内容具体包括: 采用路由优化方式传输的数据;
所述丢弃模块具体为数据丢弃模块,用于将所述接收到的采用路由优化方 式传输的数据予以丢弃。
26、 根据权利要求 23至 25中任意一项所述的网络侧设备, 其特征在于, 所述网络侧设备包括家乡代理或接入网络网元。
27、 一种网络侧设备, 其特征在于, 包括:
路由优化通知模块,用于向终端发送携带有是否允许其进行路由优化的信 息的消息。
28、 根据权利要求 27所述的网络侧设备, 其特征在于, 所述网络侧设备 是家乡代理, 所述路由优化通知模块具体是:
绑定应答模块, 用于在所述终端发起和家乡代理之间的绑定更新 /绑定应 答过程中 , 返回携带有是否允许终端进行路由优化的信息的绑定应答给终端。
29、 根据权利要求 27所述的网络侧设备, 其特征在于, 还包括: 指示信 息接收模块, 用于接收网络侧下发的是否支持终端路由优化的指示信息;
所述路由优化通知模块,具体用于根据所述指示信息,将携带有是否允许 终端进行路由优化的信息的消息发送给终端。
30、 根据权利要求 27所述的网络侧设备, 其特征在于, 所述网络侧设备 包括家乡代理或接入网络网元。
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