CN101114990B - Routing optimization control method and system - Google Patents

Abstract

The invention discloses a route optimization control method and a system thereof. The method comprises the steps of: setting on the network side whether to allow a terminal to perform route optimization; and the terminal judging whether to perform route optimization according to the setting on the network side. The present invention can realize the controllability of route optimization, and is beneficial to realize operations such as charging on the network side.

Description

Control method and system for routing optimization

technical field

The present invention relates to a communication method and its system, in particular to a route optimization control method and its system.

Background technique

In order to support terminal mobility IPv6 access, IETF defines RFC3775 for IPv6 mobility support and related security specification RFC3776. In the mobile IPv6 access process, there are three related functional entities: Mobile Node (MN, Mobile Node), Home Agent (HA, Home Agent) and Correspondent Node (CN, Correspondent Node). A mobile node in a foreign network has a home address (HoA, home address) and a care-of address (CoA, Care-of Address). The mobile node registers with the home agent through a Binding Update (BU, Binding Update) process, and the home agent processes the request and maintains a relationship table corresponding to HoA and CoA.

After completing the mobile IPv6 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 care-of address of the mobile node through a tunnel. The data sent by the mobile node also needs to be sent through the reverse tunnel. In this way, bidirectional data must pass through the home agent, and network efficiency is affected, most notably by increasing the number of hops.

To solve the above problems, Mobile IPv6 introduces Route Optimize (RO, Route Optimize) technology. Routing optimization is an optimization method introduced in mobile IPv6 technology to prevent triangular routing. It uses the return routable process and the subsequent BU process between the mobile node and the peer node, so that bidirectional data can be transmitted without going through the home agent. direct routing.

Refer to Figure 1 for the specific process of route optimization.

101. First, the mobile node simultaneously sends a HoTI/CoTI (Home Test Trigger/Care-of Test Trigger) message to the peer node to communicate, wherein the HoTI is forwarded by the home agent, and the CoTI is directly routed to the peer node.

102. After receiving the routing reachability test messages HoTI and CoTI, the peer node sends a HoT (Home Test) message and a CoT (Care-of-Test) message to the mobile node.

103. The mobile node calculates the kbm and initiates a BU/BA (Binding Acknowledge, binding response) process.

104. The peer node processes the BU. If the registration is successful, it needs to create a binding relationship table and send the BA to the mobile node.

105. Thereafter, bidirectional data can be directly routed without going through the home agent.

In addition, mobile IPv6 is also supported in the WiMax network, and route optimization is also supported for the consideration of reducing the number of hops.

The mobile node can initiate route optimization according to its own wishes, and the home agent simply forwards the HoT/HoTI message. Therefore, as long as the mobile node initiates the route optimization process and the peer node does not reject it, the route optimization can succeed.

In the WiMax network, if the network service provider NSP has a trust relationship with the network access provider NAP in terms of charging, the network access provider may provide the charging information for the charging information. However, for another situation, that is, for network service providers who wish to charge independently, since the home agent cannot control route optimization, the purpose of home agent charging cannot be achieved. Similarly, other operations that require the home agent to control route optimization cannot be completed.

Contents of the invention

The technical problem to be solved by the present invention is to provide a controllable route optimization control method.

The technical problem to be solved by the present invention is to provide a controllable routing optimization control system.

In order to solve the above-mentioned first technical problem, the purpose of the present invention is achieved through the following technical solutions: providing a control method for routing optimization, including the steps of: setting on the network side whether to allow the terminal to perform routing optimization; Perform route optimization.

Preferably, the network side sets whether to control the terminal to perform route optimization by proactively notifying the terminal.

Preferably, the method of proactively notifying the terminal is: the home agent returns a binding response with a flag bit setting whether to allow the terminal to perform route optimization during the binding update/binding response process initiated by the terminal and the home agent to the terminal.

Preferably, the method of actively notifying the terminal is specific: the home agent returns an extended binding response to whether the terminal is allowed to perform route optimization during the binding update/binding response process initiated by the terminal and the home agent. terminal.

Preferably, the method of proactively notifying the terminal is: the AAA server issues an indication of whether route optimization is allowed to the access network, and the access network sends the identification to the terminal through a DHCP process.

Preferably, the method of proactively notifying the terminal is: during the access verification process, the AAA server sends an identifier indicating whether it supports user route optimization to the authenticator, and the access router sends a route broadcast message carrying the route optimization identifier to the authenticator. terminal.

Preferably, the route optimization identifier carried in the route broadcast message is a defined bit indicating whether route optimization is allowed.

Preferably, the route optimization flag carried in the route broadcast message is an extension of whether route optimization is allowed or not.

Preferably, the network side sets whether the terminal performs route optimization by disconnecting the terminal from performing route optimization.

Preferably, the way for the cut-off terminal to perform route optimization is specifically: when the home agent receives the home test trigger message, it discards the home test trigger message under the condition that the terminal is not allowed to perform route optimization.

Preferably, the way for the cut-off terminal to perform route optimization is specifically: when the home agent receives the home test message, it discards the home test message under the condition that the terminal is not allowed to perform route optimization.

Preferably, the way for the terminal to cut off the route optimization is specifically: when the home agent receives the home test trigger message, it discards the home test trigger message under the condition that route optimization is not allowed, and directly returns the message carrying the message that does not allow the terminal to perform route optimization. Home test message to the terminal.

Preferably, the method for disconnecting the terminal to perform route optimization is specifically: during the access verification process, the AAA server sends an attribute that does not support terminal route optimization to the authenticator, and when the network access identifier corresponds to the care-of address, Among the data related to the care-of address entering and exiting the access router, the destination address of the uplink data is not the home agent, or the data whose source address of the downlink data is not the home agent is discarded.

In order to solve the above-mentioned second technical problem, the object of the present invention is achieved through the following technical solutions: provide a routing optimization control system, including a network side and a terminal, the network side includes a routing optimization control module for Set whether to allow the terminal to perform route optimization.

Preferably, the network side includes a home agent, and the route optimization control module is specifically configured to: when the home agent receives a home test trigger message, instruct the home agent whether to discard the home test according to whether the terminal is allowed to perform route optimization trigger message.

Preferably, the network side includes a home agent, and the route optimization control module is specifically configured to: when the home agent receives the home test message, instruct the home agent to decide whether to discard the home test message according to whether the terminal is allowed to perform route optimization. information.

Preferably, the network side includes an AAA server and an access service network, the access service network includes an authenticator and an access router, and the route optimization control module is specifically used for: during the access verification process, the AAA server issues It does not support the attribute of terminal route optimization to the authenticator, and in the case that the network access identifier corresponds to the care-of address, in the data related to the care-of address entering and leaving the access router, instruct the access service network to discard the uplink data destination address is not the home The agent or the source address of the downlink data is not the data of the home agent.

Preferably, the terminal further includes a route optimization message decoding module, configured to determine whether to perform route optimization according to the received network-side setting information.

Preferably, the network side includes a home agent, and the route optimization control module is specifically configured to: when the home agent receives a home test trigger message, instruct the home agent to discard the home test if the terminal is not allowed to perform route optimization. Trigger a message, and directly return a home test message carrying a home test message that does not allow the terminal to perform route optimization to the terminal.

Preferably, the network side includes a home agent, and the route optimization control module is specifically configured to: instruct the home agent to return whether to allow the terminal to The binding response of the route optimization flag bit is sent to the terminal.

Preferably, the network side includes a home agent, and the route optimization control module is specifically configured to: instruct the home agent to return whether the terminal is allowed to add new information during the binding update/binding response process initiated by the terminal and the home agent Extended Binding Reply for route optimization to the terminal.

Preferably, the network side includes an AAA server, an access router, and an authenticator, and the route optimization control module is specifically configured to: in the access verification process, instruct the AAA server to issue an identification of whether to support user route optimization to the authentication The authenticator, and instructs the access router to construct a routing broadcast message and send it to the terminal according to the attribute provided by the authenticator whether it supports user route optimization.

Preferably, the network side includes an AAA server and an access network, and the route optimization control module is specifically configured to: instruct the AAA server to issue an identifier of whether route optimization is allowed to the access network, and the access network transfers the route optimization to the access network through a DHCP process. The above identification is sent to the terminal.

Preferably, the network side includes an AAA server, an access router, and an access network, and the route optimization control module is specifically configured to: instruct the AAA server to issue a route optimization identifier to the access network, and the access network passes the access network The inbound router notifies the terminal of the extension of whether to allow route optimization defined in the route advertisement message sent by the ingress router.

It can be seen from the first technical solution above that, since the present invention designs a set of mechanisms for controlling whether to perform route optimization on the network side, the network side actively notifies the terminal whether to perform route optimization or cuts off the terminal to perform the route optimization process to control whether the terminal performs route optimization. The route optimization method ensures that the network operator can also choose to support route optimization or not, and achieve the purpose of charging by the network operator.

As can be seen from the above second technical solution, since the present invention uses the route optimization control module in the network side to control whether to allow route optimization, or combines the route optimization control module and the route optimization message decoding module in the terminal to jointly determine whether to allow route optimization, ensure The network operator can also choose whether to support route optimization or not, so as to achieve the purpose of charging by the network operator.

Description of drawings

Fig. 1 is the flow chart of prior art routing optimization;

FIG. 2 is a flow chart of an embodiment of a control method for routing optimization in the present invention;

Fig. 3 is a flow chart of another embodiment of the control method for route optimization of the present invention;

Fig. 4 is a flow chart of another embodiment of the control method for route optimization of the present invention;

Fig. 5 is a functional block diagram of the route optimization control system of the present invention.

Detailed ways

The basic principle of the present invention is: before the terminal/mobile node completes the mobility access, a mechanism is provided on the network side to enable the home agent, the access service network or the AAA server, etc. The message modified, extended or added during the mobile access process controls whether the terminal can perform route optimization in an active or passive manner, ensuring that network operators can also choose to support route optimization or not.

In order to clearly and fully illustrate the present invention, the method of expanding the message or modifying the existing message is used here to actively notify the terminal whether to perform route optimization, and to discard various messages related to route optimization during the process of route optimization to cut off The process of terminal request route optimization is taken as an example. Aiming at the above two examples, multiple implementation manners are respectively described in detail.

The present invention will be described in detail below in conjunction with the embodiments and the accompanying drawings.

1. The network side sets whether to control the terminal to perform route optimization by proactively notifying the terminal. This method includes but is not limited to the following five implementations, specifically:

The home agent carries information in the binding response message, indicating whether the home agent allows the terminal to use route optimization for mobility access. There may be the following two schemes for carrying this information, which are the first and second implementation manners of the present invention. In addition to these two solutions, there may be other ways of carrying information, such as additionally defining a new message between the home agent and the terminal for whether to allow route optimization.

1. The first embodiment of the present invention: during the binding update/binding response process initiated by the terminal and the home agent, the home agent returns a binding response with a flag bit setting whether the terminal is allowed to perform route optimization to the terminal. Specifically, a flag bit R is added in advance in the binding response message.

Table 1: Setting the flag bit R in the binding response message

When the terminal initiates the binding update/binding response process with the home agent, the home agent sets the R bit according to different situations when returning the binding response:

1) If the home agent allows route optimization, set the R bit to 1;

2) If the home agent does not allow route optimization, set the R bit to 0.

After the terminal receives the binding response set to 0, it does not initiate the backhaul routable process, that is, it does not send HoTI/CoTI messages. Here, the value of the R bit can be defined otherwise, and the values of 1 and 0 here are just examples.

2. The second embodiment of the present invention: during the binding update/binding response process initiated by the terminal and the home agent, the home agent returns to the terminal an extended binding response indicating whether to allow the terminal to perform route optimization. The added extensions are as follows:

Table 2: Newly added extension RO Permission in the binding response message

When the terminal initiates the binding update/binding response process with the home agent, the home agent sets the RO Permission according to different situations when returning the binding response:

1) If the home agent allows route optimization, set RO_OK (set any special value different from RO_DENY);

2) If the home agent does not allow route optimization, set RO_DENY (you can set any special value different from RO_OK);

After the terminal receives the binding response message with the extended RO Permission set to RO_DENY, it does not initiate the backhaul routable process, that is, it does not send the home test trigger/handover test trigger message.

The length of the newly added RO Permission field is not specified, it can be 1 bit, or lengthened, such as 1 byte or 2 bytes.

The above two implementation examples are based on the fact that the terminal performs according to the requirements of the present invention.

3. The third embodiment of the present invention: the AAA server sends an indication of whether to allow route optimization to the access network, and the access network sends the identification to the terminal through the DHCP process.

The notification to the terminal is: when the terminal initially accesses the network, the AAA server sends it to the access network, and then sends it to the terminal through a DHCP message.

For controlling whether to perform route optimization, the DHCP message sent to the terminal carries the identifier of whether to perform route optimization, which needs to be transmitted between access networks when the mobile terminal is roaming.

Referring to FIG. 2 , it is the authentication process for the mobile terminal to access the WiMAX network, including informing the terminal whether to allow the route optimization process through the DHCP process carrying an identifier of whether the route optimization is allowed during the initial network access process of the terminal. During the access authentication process of the mobile terminal, the relevant information obtained from the AAA server is obtained through the DHCP process, mainly including the interaction of two messages, Informtaion-Request and Reply. An identifier can be carried in the Reply message to indicate whether the mobile terminal allows route optimization, and the specific steps include:

201. The mobile terminal initiates initial authentication;

202. The gateway (including the access router) sends an access request (Access-Request) to the home AAA server;

203. Assign home agent and home link (HL, Home Link);

204. Return an identifier ROI (routing optimization indication) indicating route optimization together with the access confirmation (Access Accept) message, and send it to the access network together with home agent and home link information, and the identifier indicates whether the mobile terminal performs route optimization ;

205. Store the received above information on the access gateway; in addition, the access router may also obtain the ROI information;

206. Complete the authentication.

207. The mobile terminal sends an information request (Information-Request) to the access router;

208. The access router returns to the mobile terminal a response (Reply) message carrying the identifier ROI indicating route optimization, and the mobile terminal decides whether to perform route optimization according to the identifier.

At the same time, when the mobile terminal initiates a registration request, the authentication response obtained by the home agent from the AAA server may include this flag to inform the home agent whether to allow route optimization for the terminal.

During this process, the gateway or access router can also obtain this indication, so as to know whether route optimization is required. Then, if it is not allowed, take appropriate control measures. At the same time, 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 (binding update message in IPv6). After receiving the initial mobile IP registration request of the mobile terminal, the home agent requests the relevant information of the mobile terminal from the AAA server. Furthermore, the AAA server can notify the home agent whether to allow the mobile terminal to perform route optimization.

This embodiment can also be changed to: after all network elements of the access network know whether to allow the mobile terminal to perform route optimization, there is no need to send the route optimization instruction to the mobile terminal. Instead, on the network side, the network element on the network side directly returns a failure response message for route optimization such as rejection or simply discards to achieve the purpose of controlling the mobile terminal to perform route optimization.

4. The fourth embodiment of the present invention: during the access verification process, the AAA server sends an identifier indicating whether to support user route optimization to the authenticator, and the access router constructs a route according to the attribute provided by the authenticator whether to support user route optimization Broadcast a message and send it to the terminal. specifically is:

1) During the mobility access verification process, the AAA server sends an identifier indicating whether to support user route optimization to the authenticator (Authenticator);

2) According to the information provided by the authentication, the access router constructs a routing broadcast message, that is, the RO Permission value in the following table is set;

The routing broadcast message constructed by the access router refers to the routing broadcast message of the extended access router, that is, adding the following options in the routing broadcast message sent to the terminal by the access router:

Table 3: Added extensions in routing broadcast messages

Among them, if route optimization is allowed, the extended RO Permission is set to 1, which is also the default value; if route optimization is not allowed, the extended RO Permission is set to 0. Here, the value of RO Permission can also be other values.

3) After the terminal receives the routing broadcast message from the access router, it judges whether it can initiate routing optimization according to the RO Permission value.

5. The fifth embodiment of the present invention: similar to the fourth embodiment, the AAA server issues whether to allow route optimization to the authenticator of the access network, and the access network passes all the information in the routing broadcast message sent by the access router. Defines whether to allow route optimization extensions to notify endpoints.

Specifically, the access router adds a flag bit in the Router Advertisement message sent to the terminal to indicate whether the terminal allows route optimization. The newly added flags are defined as follows:

Table 4: The newly added R flag in the routing broadcast message

When the terminal receives the routing broadcast message carrying the newly added flag, it sets the R flag according to different situations:

1) If the access router allows route optimization, set R to 1;

2) If the access router does not allow route optimization, set R to 0.

Certainly, the value of R may be various values other than the above-mentioned values, as long as the two situations of allowing and disallowing route optimization can be distinguished.

2. The network side controls whether the terminal performs route optimization by cutting off the terminal for route optimization:

During the initial mobility access verification process, the home agent needs to distinguish the home test trigger message or the home test message from the data packet, so it can use the configured information to control route optimization. The sixth and seventh implementation modes are as follows.

6. The sixth embodiment of the present invention: when the home agent receives the home test trigger message, it discards the home test trigger message when the terminal is not allowed to perform route optimization.

Referring to Fig. 3, in the initial verification process of mobility access, when the home agent receives the home test trigger message, if route optimization is not allowed, the home agent discards the home test trigger message. In this way, the peer node cannot receive the home test trigger message, and similarly, the terminal cannot receive the home test message from the peer node. Therefore, the terminal cannot calculate the Kbm, and ultimately cannot trigger the binding update/binding response process to the peer node. Packets still need to be forwarded between the endpoint and the peer node via the home agent.

7. The seventh embodiment of the present invention: when the home agent receives the home test message, it discards the home test message when the terminal is not allowed to perform route optimization.

Referring to Figure 4, during the initial verification process of mobility access, after receiving the home test trigger message forwarded by the home agent, the peer node will return the home test message to the terminal, which also needs to be forwarded by the home agent. If route optimization is not allowed, the home agent discards the home test message. In this way, the terminal cannot receive the home test message from the peer node. Therefore, the terminal cannot calculate the Kbm, and ultimately cannot trigger the binding update/binding response process to the peer node. Packets still need to be forwarded between the endpoint and the peer node via the home agent.

8. The eighth embodiment of the present invention: when the home agent receives the home test trigger message, it discards the home test trigger message when route optimization is not allowed, and directly returns the home test message carrying the home test message that does not allow the terminal to perform route optimization to the terminal . The home test message carrying the permission/disallowing terminal to perform route optimization can be referred to the following table:

Table 5: Adding the extension RO Permission in the home test message

When the home agent receives the home test trigger message, if route optimization is not allowed, the home agent does not forward the home test trigger message, but directly returns the home test message, carrying the RO Permission option, and notifies the terminal that the home agent does not allow route optimization at this time. Other fields (such as Home Nonce Index, Home init Cookie, Home Keygen Token) can be set to empty. Therefore, the terminal cannot calculate the Kbm, and will not trigger the binding update/binding response process to the peer node. Packets still need to be forwarded between the endpoint and the peer node via the home agent.

9. The ninth embodiment of the present invention: during the access verification process, the AAA server sends attributes that do not support terminal route optimization to the authenticator, and when the NAI corresponds to the care-of address, the care-of address and the access router Among the related data, the destination address of the uplink data is not the home agent, or the source address of the downlink data is not the home agent. details as follows:

1) During the access verification process, the AAA server sends the attribute of whether terminal route optimization is supported to the authenticator;

2) The access service network gateway (ASN-GW) maintains the corresponding relationship between NAI (NetworkAccess Identity, network access identifier) and the care-of address;

3) If route optimization is not supported, then all data packets sent from the care-of address and data packets sent to the care-of address need to be filtered once. If the destination address of the uplink data is not the home agent, or the source address of the downlink data is not the home agent, such data packets will be discarded.

10. The tenth embodiment of the present invention: after receiving a route reachability test message or any data from a terminal that is not allowed to perform route optimization, a network element on the network side, such as a home agent, an access network authenticator, an access router or a DHCP agent, receives , discarding it.

11. The eleventh embodiment of the present invention: after receiving a routing request from a terminal that is not allowed to perform route optimization, a network element on the network side, such as a home agent, an access network authenticator, an access router or a DHCP agent, responds with a corresponding failure or Decline message.

As can be seen from the above, the present invention designs a set of mechanisms for controlling whether to perform routing 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 optimization. Optimizing or cutting off the route optimization process of the terminal to control whether the terminal performs route optimization, to ensure that the network operator can also choose to support route optimization or not, and to achieve the purpose of charging by the network operator.

The invention also provides a route optimization control system, including a network side and a terminal. The network side includes a route optimization control module, a home agent and a peer node. The route optimization control module is used to set whether to allow the terminal to perform route optimization on the network side, and the home agent is used to forward data. The peer node is used to transmit data with the terminal when the terminal roams. The terminal includes a route optimization message decoding module, which is used to receive the setting of whether to perform route optimization from the network side, and determine whether the network allows the terminal to communicate with the peer node in a route optimization manner.

The route optimization control module is specifically used to: instruct the home agent to return to the terminal a binding response with a flag bit setting whether to allow the terminal to perform route optimization during the binding update/binding response process initiated by the terminal and the home agent .

or:

In the process of binding update/binding response initiated by the terminal and the home agent, the home agent is instructed to return to the terminal an extended binding response to allow the terminal to perform route optimization.

Instructing the AAA server to issue an identifier of whether to allow route optimization to the access network, and the access network sends the identifier to the terminal through a DHCP process.

During the access verification process, instruct the AAA server to send the identifier of whether to support user route optimization to the authenticator, and instruct the access router to add the identifier of whether to support user route optimization provided by the authenticator to construct a route broadcast message and send it to the terminal , the flag is a defined bit indicating whether to allow route optimization.

The AAA server is instructed to send the identifier of whether to allow route optimization to the access network, and the access network notifies the terminal through the defined extension of whether to allow route optimization in the route broadcast message sent by the access router.

When the home agent receives the home test trigger message, it instructs the home agent whether to discard 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 terminal to perform route optimization to the terminal.

After receiving the above-mentioned setting instruction of whether to perform route optimization from the network side, the terminal uses the route optimization message decoding module to determine whether the network allows the terminal to communicate with the peer node in a route optimization manner. If yes, instruct the terminal to communicate directly with the peer node bypassing the home agent; otherwise, still instruct the terminal to communicate with the peer node through the home agent.

In other embodiments, the route optimization control module is further specifically configured to: when the home agent receives the home test trigger message, instruct the home agent whether to discard the home test trigger message according to whether the terminal is allowed to perform route optimization.

or:

When the home agent receives the home test message, it instructs the home agent to decide whether to discard the home test message according to whether the terminal is allowed to perform route optimization.

During the access verification process, instruct the AAA server to issue attributes that do not support terminal route optimization to the authenticator, and when the NAI corresponds to the care-of address, in the data related to the care-of address entering and leaving the access router, discard the uplink data The destination address is not the home agent, or the source address of the downlink data is not the data of the home agent.

After adopting the above design, after discarding relevant messages or data on the network side, since route optimization cannot be completed, the terminal can only communicate with the peer node through the home agent. If the network side does not discard relevant messages or data, the route optimization is completed, and the terminal can bypass the home agent to communicate with the peer node.

It can be seen from the above that the present invention adopts the route optimization control module in the network side to control whether to allow route optimization, or combines the route optimization control module and the route optimization message decoding module in the terminal to jointly decide whether to allow route optimization to ensure that network operators also You can choose whether to support route optimization or not to realize the purpose of billing by network operators.

The "terminal" referred to in the present invention may be a mobile terminal or a mobile node, including but not limited to IPv6 and/or IPv4 mobile terminals.

A routing optimization control method and its system provided by the present invention have been introduced in detail above. In this paper, specific examples are used to illustrate the principle and implementation of the present invention. The descriptions of the above embodiments are only used to help understand the present invention. The method of the invention and its core idea; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation and scope of application. In summary, the content of this specification should not be understood To limit the present invention.

Claims (8)

1. the control method of a routing optimality is characterized in that, comprises step:

Whether the network side setting allows the terminal to carry out routing optimality, so that the terminal judges whether to carry out routing optimality according to the setting of network side;

Said network side carries out routing optimality through cutting off the terminal, whether carries out routing optimality so that the terminal to be set;

Wherein, whether said network side setting allows the terminal to carry out routing optimality to be specially:

Said network side is provided with through the mode at proactive notification terminal;

The mode at said proactive notification terminal is specifically:

Home agent the terminal initiate and home agent between Binding Update/binding answering in, return and be provided with the binding that whether allows the terminal to carry out the flag bit of routing optimality and reply to the terminal;

Perhaps, in the Binding Update/binding answering of home agent between terminal initiation and home agent, return the newly-increased binding that whether allows the terminal to carry out the expansion of routing optimality and reply to the terminal;

Perhaps, aaa server issues the sign that whether allows routing optimality and gives Access Network, and Access Network is issued the terminal through dhcp process with said sign;

Perhaps, in inserting proof procedure, aaa server issues the authenticator that is identified to of whether supporting user's routing optimality, and couple in router sends the routing broadcast message of carrying said routing optimality sign and gives the terminal;

Wherein, said network side carries out routing optimality and is specially through cutting off the terminal:

The mode that routing optimality is carried out at said cut-out terminal is specifically: when home agent is received local test trigger messages, do not allowing the terminal to carry out abandoning under the routing optimality situation said local test trigger messages.

2. the control method of a routing optimality is characterized in that, comprises step:

Whether the network side setting allows the terminal to carry out routing optimality, so that the terminal judges whether to carry out routing optimality according to the setting of network side;

Said network side carries out routing optimality through cutting off the terminal, whether carries out routing optimality so that the terminal to be set;

Wherein, whether said network side setting allows the terminal to carry out routing optimality to be specially:

Said network side is provided with through the mode at proactive notification terminal;

The mode at said proactive notification terminal is specifically:

Home agent the terminal initiate and home agent between Binding Update/binding answering in, return and be provided with the binding that whether allows the terminal to carry out the flag bit of routing optimality and reply to the terminal;

Perhaps, in the Binding Update/binding answering of home agent between terminal initiation and home agent, return the newly-increased binding that whether allows the terminal to carry out the expansion of routing optimality and reply to the terminal;

Perhaps, aaa server issues the sign that whether allows routing optimality and gives Access Network, and Access Network is issued the terminal through dhcp process with said sign;

Perhaps, in inserting proof procedure, aaa server issues the authenticator that is identified to of whether supporting user's routing optimality, and couple in router sends the routing broadcast message of carrying said routing optimality sign and gives the terminal;

Wherein, said network side carries out routing optimality and is specially through cutting off the terminal:

The mode that routing optimality is carried out at said cut-out terminal is specifically: when home agent is received the local test post, do not allowing the terminal to carry out abandoning under the routing optimality situation said local test post.

3. the control method of a routing optimality is characterized in that, comprises step:

Whether the network side setting allows the terminal to carry out routing optimality, so that the terminal judges whether to carry out routing optimality according to the setting of network side;

Said network side carries out routing optimality through cutting off the terminal, whether carries out routing optimality so that the terminal to be set;

Wherein, whether said network side setting allows the terminal to carry out routing optimality to be specially:

Said network side is provided with through the mode at proactive notification terminal;

The mode at said proactive notification terminal is specifically:

Home agent the terminal initiate and home agent between Binding Update/binding answering in, return and be provided with the binding that whether allows the terminal to carry out the flag bit of routing optimality and reply to the terminal;

Perhaps, in the Binding Update/binding answering of home agent between terminal initiation and home agent, return the newly-increased binding that whether allows the terminal to carry out the expansion of routing optimality and reply to the terminal;

Perhaps, aaa server issues the sign that whether allows routing optimality and gives Access Network, and Access Network is issued the terminal through dhcp process with said sign;

Perhaps, in inserting proof procedure, aaa server issues the authenticator that is identified to of whether supporting user's routing optimality, and couple in router sends the routing broadcast message of carrying said routing optimality sign and gives the terminal;

Wherein, said network side carries out routing optimality and is specially through cutting off the terminal:

The mode that routing optimality is carried out at said cut-out terminal is specifically: when home agent is received local test trigger messages; Do not allowing to abandon under the routing optimality situation said local test trigger messages, directly returning and carry the local test post that does not allow the terminal to carry out routing optimality and give the terminal.

4. the control method of a routing optimality is characterized in that, comprises step:

Whether the network side setting allows the terminal to carry out routing optimality, so that the terminal judges whether to carry out routing optimality according to the setting of network side;

Said network side carries out routing optimality through cutting off the terminal, whether carries out routing optimality so that the terminal to be set;

Wherein, whether said network side setting allows the terminal to carry out routing optimality to be specially:

Said network side is provided with through the mode at proactive notification terminal;

The mode at said proactive notification terminal is specifically:

Home agent the terminal initiate and home agent between Binding Update/binding answering in, return and be provided with the binding that whether allows the terminal to carry out the flag bit of routing optimality and reply to the terminal;

Perhaps, in the Binding Update/binding answering of home agent between terminal initiation and home agent, return the newly-increased binding that whether allows the terminal to carry out the expansion of routing optimality and reply to the terminal;

Perhaps, aaa server issues the sign that whether allows routing optimality and gives Access Network, and Access Network is issued the terminal through dhcp process with said sign;

Perhaps, in inserting proof procedure, aaa server issues the authenticator that is identified to of whether supporting user's routing optimality, and couple in router sends the routing broadcast message of carrying said routing optimality sign and gives the terminal;

Wherein, said network side carries out routing optimality and is specially through cutting off the terminal:

In inserting proof procedure; Aaa server issues the attribute of support terminal routing optimality not to authenticator; And network access Identifier corresponding to the Care-of Address situation under; In the data relevant with Care-of Address of turnover couple in router, the source address that abandons the upstream data destination address and be not home agent or downlink data is not the data of home agent.

5. whether the control system of a routing optimality comprises network side and terminal, it is characterized in that, said network side comprises the routing optimality control module, be used for allowing the terminal to carry out routing optimality in the network side setting;

Said terminal comprises the route-optimization message decoder module, is used for according to the network side that receives information being set and judges whether to carry out routing optimality;

Said network side comprises home agent; And said routing optimality control module specifically is used for: the terminal initiate and home agent between Binding Update/bindings answering, indicate home agent to return to be provided with the binding that whether allows the terminal to carry out the flag bit of routing optimality and reply to the terminal;

Perhaps; Said network side comprises home agent; And said routing optimality control module specifically is used for: the Binding Update/binding answering between terminal initiation and home agent, and the indication home agent returns the newly-increased binding that whether allows the terminal to carry out the expansion of routing optimality and replys to the terminal;

Perhaps, said network side comprises aaa server and Access Network, and said routing optimality control module specifically is used for: the indication aaa server issues the sign that whether allows routing optimality and gives Access Network, and Access Network is issued the terminal through dhcp process with said sign;

Perhaps; Said network side comprises aaa server, couple in router and authenticator; And said routing optimality control module specifically is used for: inserting proof procedure; The indication aaa server issues the authenticator that is identified to of whether supporting user's routing optimality, and the routing broadcast message that said routing optimality sign is carried in the transmission of indication couple in router is to the terminal;

Said network side comprises home agent; Whether and said routing optimality control module specifically is used for: when home agent is received local test trigger messages, indicate home agent whether to abandon said local test trigger messages according to allowing the terminal to carry out routing optimality.

6. whether the control system of a routing optimality comprises network side and terminal, it is characterized in that, said network side comprises the routing optimality control module, be used for allowing the terminal to carry out routing optimality in the network side setting;

Said terminal comprises the route-optimization message decoder module, is used for according to the network side that receives information being set and judges whether to carry out routing optimality;

Said network side comprises home agent; And said routing optimality control module specifically is used for: the terminal initiate and home agent between Binding Update/bindings answering, indicate home agent to return to be provided with the binding that whether allows the terminal to carry out the flag bit of routing optimality and reply to the terminal;

Perhaps; Said network side comprises home agent; And said routing optimality control module specifically is used for: the Binding Update/binding answering between terminal initiation and home agent, and the indication home agent returns the newly-increased binding that whether allows the terminal to carry out the expansion of routing optimality and replys to the terminal;

Perhaps, said network side comprises aaa server and Access Network, and said routing optimality control module specifically is used for: the indication aaa server issues the sign that whether allows routing optimality and gives Access Network, and Access Network is issued the terminal through dhcp process with said sign;

Perhaps; Said network side comprises aaa server, couple in router and authenticator; And said routing optimality control module specifically is used for: inserting proof procedure; The indication aaa server issues the authenticator that is identified to of whether supporting user's routing optimality, and the routing broadcast message that said routing optimality sign is carried in the transmission of indication couple in router is to the terminal;

Whether said network side comprises home agent, and said routing optimality control module specifically is used for: when home agent is received the local test post, indicate the home agent decision whether to abandon said local test post according to allowing the terminal to carry out routing optimality.

7. whether the control system of a routing optimality comprises network side and terminal, it is characterized in that, said network side comprises the routing optimality control module, be used for allowing the terminal to carry out routing optimality in the network side setting;

Said terminal comprises the route-optimization message decoder module, is used for according to the network side that receives information being set and judges whether to carry out routing optimality;

Said network side comprises home agent; And said routing optimality control module specifically is used for: the terminal initiate and home agent between Binding Update/bindings answering, indicate home agent to return to be provided with the binding that whether allows the terminal to carry out the flag bit of routing optimality and reply to the terminal;

Perhaps; Said network side comprises home agent; And said routing optimality control module specifically is used for: the Binding Update/binding answering between terminal initiation and home agent, and the indication home agent returns the newly-increased binding that whether allows the terminal to carry out the expansion of routing optimality and replys to the terminal;

Perhaps, said network side comprises aaa server and Access Network, and said routing optimality control module specifically is used for: the indication aaa server issues the sign that whether allows routing optimality and gives Access Network, and Access Network is issued the terminal through dhcp process with said sign;

Perhaps; Said network side comprises aaa server, couple in router and authenticator; And said routing optimality control module specifically is used for: inserting proof procedure; The indication aaa server issues the authenticator that is identified to of whether supporting user's routing optimality, and the routing broadcast message that said routing optimality sign is carried in the transmission of indication couple in router is to the terminal;

Said network side comprises home agent; And said routing optimality control module specifically is used for: when home agent is received local test trigger messages; Do not allowing to abandon under the routing optimality situation said local test trigger messages, directly returning and carry the local test post that does not allow the terminal to carry out routing optimality and give the terminal.

8. whether the control system of a routing optimality comprises network side and terminal, it is characterized in that, said network side comprises the routing optimality control module, be used for allowing the terminal to carry out routing optimality in the network side setting;

Said terminal comprises the route-optimization message decoder module, is used for according to the network side that receives information being set and judges whether to carry out routing optimality;

Said network side comprises home agent; And said routing optimality control module specifically is used for: the terminal initiate and home agent between Binding Update/bindings answering, indicate home agent to return to be provided with the binding that whether allows the terminal to carry out the flag bit of routing optimality and reply to the terminal;

Perhaps; Said network side comprises home agent; And said routing optimality control module specifically is used for: the Binding Update/binding answering between terminal initiation and home agent, and the indication home agent returns the newly-increased binding that whether allows the terminal to carry out the expansion of routing optimality and replys to the terminal;

Perhaps, said network side comprises aaa server and Access Network, and said routing optimality control module specifically is used for: the indication aaa server issues the sign that whether allows routing optimality and gives Access Network, and Access Network is issued the terminal through dhcp process with said sign;

Perhaps; Said network side comprises aaa server, couple in router and authenticator; And said routing optimality control module specifically is used for: inserting proof procedure; The indication aaa server issues the authenticator that is identified to of whether supporting user's routing optimality, and the routing broadcast message that said routing optimality sign is carried in the transmission of indication couple in router is to the terminal;

Network side comprises aaa server and access service network; Said access service network comprises authenticator and couple in router; And said routing optimality control module specifically is used for: inserting proof procedure; Aaa server issues the attribute of support terminal routing optimality not to authenticator; And network access Identifier corresponding to the Care-of Address situation under, in the data relevant with Care-of Address of turnover couple in router, indicating access service network to abandon the upstream data destination address is not that the source address of home agent or downlink data is not the data of home agent.

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