CN102546356B - Method and system capable of ensuring service quality of mobile nodes in logo network - Google Patents

Abstract

The invention discloses a method for guaranteeing service quality in a guarantee identification network. The method includes the following steps: preset the service quality level of a mobile node, and preset the corresponding routing mode; when the mobile node initiates a service flow, the access gateway router selects a corresponding routing mode according to the quality of service level of the mobile node to forward the data packet. With the application of the present invention, operators can provide different levels of service quality for different mobile nodes, achieve differentiated services, refine operations, and improve the operator's own operating capabilities.

Description

A method and system for guaranteeing service quality of mobile nodes in identification network

technical field

The invention relates to the field of communication technology, in particular to a method and system for guaranteeing service quality in a guarantee identification network.

Background technique

The IP address in the TCP/IP (Transmission Control Protocol/Internet Protocol) protocol widely used in the existing Internet has dual functions. It is also used as the identity of the network interface of the transport layer host. However, the TCP/IP protocol did not consider the movement of the host at the beginning of its design. When the movement of the host becomes more and more common, the defect of semantic overload of the IP address becomes more and more obvious. When the IP address of the host changes, not only the routing changes, but also the identity of the communication terminal host, which will lead to an increasingly heavy routing load, and the change of the host identity will also cause the interruption of applications and connections.

The purpose of the separation of identity and location is to solve the problems of semantic overload of IP addresses and serious routing load, and to separate the dual functions of IP addresses, so as to realize mobility, multi-homing, dynamic redistribution of IP addresses, and ease of routing. Support for issues such as load and mutual visits between different network areas in the next generation Internet.

In the prior art, an implementation method based on a network router is one of the solutions related to the separation of identification and location.

In the prior art, a network-based identity identification and location separation scheme has been proposed. The network described in the following section is referred to as the identification network for short. The basic idea of this scheme is to divide the network into access layer and The core layer, correspondingly, the network is divided into access network and backbone network. There are two types of identifiers for mobile nodes in the network: user identity identifier (Access Identifier, AID for short) and routing location identifier (Routing-Location Identifier, RID for short). Each user in the network has a unique AID, which remains unchanged during the moving process; during data forwarding, the AID can only be used at the access layer, and the RID can only be used at the core layer; between user terminals During layer communication, AID is used to identify the peer.

The topology diagram of the network-based identity and location separation framework is shown in Figure 1. As shown in Figure 1, the network-based identity and location separation framework mainly includes: radio access network (RAN), access Access Gateway Router (AGR for short), General Switch Router (GSR for short), Identifier Mapping Server (IDMS for short), authentication center, etc. The following are the introductions:

The AGR is mainly responsible for providing access services for each mobile node (user terminal), assigning RIDs to the accessed user terminals, and marking and encapsulating the data packets of the user terminals before transmitting them in the backbone network.

When AGR receives the data message sent by the user terminal, it queries the AID-RID mapping table in the local cache (CACHE) according to the destination address in the data message (that is, the AID of the communication peer): if the corresponding AID-RID is found mapping entry, the found RID of the communication terminal is encapsulated in the message header and sent to the backbone network for forwarding processing; if no corresponding AID-RID mapping entry is found, the data message is forwarded to the backbone network and sent to the backbone network The IDMS initiates the process of querying the AID-RID mapping information (of the communication peer), and saves the corresponding AID-RID mapping returned by the IDMS locally for query when subsequent message forwarding. Or, when the AGR does not find the corresponding AID-RID mapping entry, it can also choose not to forward the data message to the backbone network, but initiates the process of querying the (communication peer) AID-RID mapping information to the IDMS. After returning the corresponding AID-RID mapping, the found RID of the communication terminal is encapsulated in the message header and sent to the backbone network for forwarding processing.

When the AGR receives the data message sent to the user terminal, it decapsulates the data message, strips off the newly added message header containing the RID in the data message, and sends it to the terminal.

The main function of the GSR is to select routes and forward data packets according to the routing location identifier RID in the data packets.

IDMS is mainly responsible for maintaining the mapping relationship between user IDs and location IDs in the network, and providing query services to access gateway routers and other mapping servers.

Authentication center, the authentication center is responsible for recording information such as user category, user service level, etc., and performs legal authentication and authorization for users when they access. The authentication center supports two-way authentication between the network and users.

The wireless access network is responsible for providing and maintaining the Layer 2 link between the user terminal and the access gateway router AGR; it is responsible for wireless resource management in the application scenario of the cellular mobile network.

Under the framework shown in Figure 1, the network can be divided into an access network and a backbone network. The access network is located at the edge of the backbone network and is responsible for the access of all user terminals. In the RAN part of the access network, all user terminals use AID for addressing. The backbone network is responsible for the routing of user terminals through different access networks. There is no overlap between the access network and the backbone network in topology. The application layer between the communication hosts uses the AID to identify the opposite end, and the communication between the user terminals only needs to use the AID of the opposite end.

The access gateway router is located at the demarcation point between the backbone network and the access network. As the interface between the access network and the backbone network, it is responsible for providing access services for user terminals, maintaining user connections, and forwarding user data. All communication of the user terminal is forwarded and managed through the access gateway router of the access network where it is located. Data packets between user terminals within the service range of the same access gateway router are directly forwarded to the peer end. The forwarding of data packets between user terminals within the service range of different access gateway routers is as follows: when a user terminal sends a data packet, the corresponding access gateway router carries RID information in the forwarded data packet (the RID and Corresponding to the AID); Correspondingly, when the user terminal receives the data message, the access gateway router performs the opposite operation, that is, strips the RID information and forwards the data message to the user terminal. The mapping server stores the mapping relationship of identity and location identifiers assigned by all connected user terminals in the network, and interacts with the access gateway router to resolve the identifier relationship through signaling interaction.

The relevant interfaces of the network architecture based on the network-based identity identification and location separation framework are shown in Figure 2, S1/D1 is the interface between the user terminal and the access gateway router AGR, S1 is used for signaling of user access management, and D1 is Data forwarding interface; S2 is used for handover management signaling when switching between AGRs, D2 is used for data forwarding when switching between AGRs; D3 is the data forwarding interface between AGR and GSR, and S4/S5/S6 are used for querying and maintaining AID - The signaling interface of the RID mapping relationship, D4m is the data forwarding interface between AGR and IDMS. Among them, when the visted IDMS (visited IDMS) has no direct relationship with the Home IDMS (home IDMS), the Broke IDMS (relay IDMS) forwards the signaling between the visited IDMS and the Home IDMS.

With the vigorous development of the telecommunications industry, the competition among various operators is also intensified, especially the competition around terminals, services, and service quality is becoming more and more intense. The service quality is becoming the core element for operators to improve their competitiveness. With the deepening of operators' operations, the types of user terminals (mobile nodes) tend to become more complex, and the connotation of user terminal services is also gradually expanded. Therefore, providing different levels of service quality for different user terminals to achieve differentiated services and refined operations has become an important means to improve operators' operational capabilities. However, in the existing identification network technology, a solution for realizing differentiated service quality by user terminal type has not been considered.

Contents of the invention

The technical problem to be solved by the present invention is to provide a differentiated service in the identification network according to different service quality levels of mobile nodes, so as to effectively ensure the implementation of mobile nodes with different service quality levels. Method and system for different quality of service.

To achieve the above object, the present invention adopts the following technical solutions:

A method for ensuring the quality of service of a mobile node in an identification network, comprising the following steps:

Preset the quality of service level of the mobile node, and the corresponding routing mode when the mobile node with different quality of service levels accesses the access gateway router;

When the mobile node initiates a service flow, the access gateway router selects a corresponding routing mode according to the quality of service level of the mobile node to forward the data message.

In an embodiment of the present invention, when the mobile node attaches to the network, the authentication center also authenticates the authentication request for the mobile node sent by the access gateway router; if the authentication is successful, the The mobile node performs the operation of initiating a service flow.

In one embodiment of the present invention, the information of the preset quality of service level of the mobile node is stored in the authentication center, and if the authentication is successful, the authentication center will store the information of the quality of service level corresponding to the mobile node The information is sent to the access gateway router.

In an embodiment of the present invention, the mapping server stores the route mapping mode of the mobile node, and when the mobile node initiates a service flow, the access gateway router sends the mobile node The corresponding service quality level information and the request information for querying the routing mode of the mobile node, the mapping server selects the routing mode corresponding to the mobile node according to the received quality of service level information corresponding to the mobile node and returns it to the The access gateway router described above.

In one embodiment of the present invention, the information of the preset quality of service level of the mobile node is stored in the authentication center, and if the authentication is successful, the authentication center will store the information of the quality of service level corresponding to the mobile node The information is sent to the mapping server.

In an embodiment of the present invention, the mapping server stores the route mapping mode of the mobile node, and when the mobile node initiates a service flow, the access gateway router sends the query information to the mapping server. The request information of the routing mode of the mobile node, the mapping server selects the routing mode corresponding to the mobile node according to the quality of service level information corresponding to the mobile node obtained from the authentication center and returns it to the access gateway router .

In an embodiment of the present invention, the information of the preset quality of service level of the mobile node and the route mapping mode of the mobile node are stored in the mapping server. If the authentication by the authentication center is successful and when the mobile node initiates a service flow, the access gateway router sends request information to the mapping server for querying the routing mode of the mobile node, and the mapping server The QoS level information corresponding to the node selects the routing mode corresponding to the mobile node and returns it to the access gateway server router.

In an embodiment of the present invention, before the access gateway router sends an inquiry about the routing mode of the mobile node to the mapping server, it also inquires whether there is a routing mode of the mobile node in its own cache, and if there is , the data message is forwarded according to the routing mode of the mobile node stored in its own cache.

In an embodiment of the present invention, when the mobile node initiates a service flow for the first time, the access gateway router forwards the data message first, and then sends a message querying the routing mode of the mobile node to the mapping server. Request information, and store the routing mode of the mobile node returned by the mapping server in its own cache.

In an embodiment of the present invention, the routing mode is specifically a mapping relationship between a user identity identifier AID-routing location identifier RID.

At the same time, the present invention also provides a system for ensuring the quality of service of mobile nodes in the identification network, which is characterized in that it includes a preset module and a routing module arranged in the system;

The preset module is used to preset the quality of service level of the mobile node, and preset the corresponding routing mode when the mobile node with different quality of service levels accesses the access gateway router;

The routing selection module is used to select a corresponding routing mode according to the quality of service level of the mobile node to forward the data message when the mobile node initiates a service flow.

Due to the adoption of the above technical solution, the beneficial effect of the present invention is that the operator pre-sets the quality of service level of the mobile node and the corresponding routing mode when the mobile node with different quality of service levels accesses the access gateway router, so that when When the mobile node initiates a service flow, the access gateway router to which the mobile node belongs can select a corresponding routing mode to forward the data message according to the service quality level of the mobile node. In this way, the operator can provide different levels of service quality for different mobile nodes (user terminals), achieve differentiated services, refine operations, and improve the operator's own operating capabilities.

Description of drawings

FIG. 1 is a schematic diagram of a network topology of a network-based identity and location separation architecture in the prior art;

FIG. 2 is a schematic interface diagram of a network architecture based on a network-based identity identification and location separation framework in the prior art;

FIG. 3 is a schematic diagram of a processing flow when a mobile node attaches to a network according to an embodiment of the present invention;

Fig. 4 is a schematic diagram of a processing flow when a mobile node initiates a service flow according to an embodiment of the present invention.

Detailed ways

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

Quality of Service (QoS) is an important issue that operators need to solve in order to improve service. At present, providing different levels of service quality for different users to achieve differentiated services and refined operations is an important means to improve operators' own operating capabilities and their own competitiveness. However, in the current identification network technology, the solution of quality of service has not been considered yet.

The technical problem to be solved by the present invention is to provide differentiated service quality for mobile nodes (users or user terminals) in the identification network, and improve the operation ability of operators in the identification network. In order to solve the existing technical problems, the present invention proposes a method for distinguishing the QoS levels of mobile nodes and providing corresponding quality of service according to the QoS levels of mobile nodes on the basis of the technology based on identification network identity and location separation.

The main idea of the present invention is: the operator divides the MNs in the access identification network into different service types according to the subscription information of the mobile node MN, and pre-sets the corresponding service quality levels for the MNs of different service types. When the MN initiates a service flow, the access gateway router AGR selects a corresponding routing mode to forward the data message according to the service quality level of the MN. Specifically, the operator sets different service quality levels for the MN according to the subscription information of the MN. Since the MN needs to access the identification network through the access gateway server (AGR), and multiple different MNs may also pass the same AGR Access to the identification network. Therefore, in order to realize the differentiated services of the MN, the operator also needs to preset multiple different routing methods for the same AGR, so as to divide several logical planes with different QoS levels in the backbone network. Each routing mode corresponds to a service quality level of the MN. That is to say, the operator needs to preset several routing modes corresponding to when MNs of different QoS levels access the AGR for the same AGR. When MNs of different service quality levels access the identification network through the same AGR, the AGR can select a corresponding routing method according to the service quality level of the MN, and forward the data message sent by the MN.

In the embodiment of implementing differentiated services for MNs, in order to ensure the accuracy of the quality of service of each MN, when the MN in the access identification network attaches to the network, that is, when the MN attaches, it is also necessary to check the accuracy of each MN in the access identification network. The purpose of authentication is to judge whether the mobile node accessing the identification network is legal, and to authorize the legal mobile node. The authentication process is specifically: the access gateway router AGR to which the MN belongs sends an authentication request for the MN to the authentication center, and the authentication center receives the authentication request information and performs authentication. Wherein, the authentication request information of the MN may be the user name, password, and International Mobile Subscriber Identity (IMSI) of the MN. If the MN passes the authentication of the authentication center, that is, the authentication is successful, then the MN is authorized by the authentication center to perform the operation of initiating a service flow. If the authentication fails, the MN cannot perform the operation of initiating a service flow.

In one embodiment, the information of the preset quality of service level of each MN is stored in the authentication center, and when the access gateway router AGR initiates an authentication request to a certain MN to the authentication center, the authentication center performs an authentication process on the MN. Authentication; if the authentication is successful, the authentication center will also send the service quality level information corresponding to the MN stored in itself to the access gateway router AGR to which the MN belongs when accessing the identification network.

In fact, if the information of the MN's quality of service level is stored in the authentication center, when the MN initiates a service flow, the AGR also needs to send the corresponding service quality level information of the MN and the request information for querying the routing mode of the MN to the mapping server. Wherein, the routing mode of all mobile nodes in the network is stored in the mapping server. At this time, the mapping server selects the routing mode corresponding to the MN according to the received service quality level information corresponding to the MN and returns it to the access gateway router AGR. The AGR forwards the data message sent by the MN according to the routing mode of the MN returned from the mapping server. When the AGR judges that the communication peer corresponding to the MN belongs to the same AGR as the MN according to the information of the routing mode of the MN, then the AGR directly forwards the data message to the AGR to which the communication peer of the MN belongs; if the AGR If it is judged that the communication peer corresponding to the MN and the MN belong to different AGRs, then the AGR will forward the data message to the backbone network according to the received routing mode of the MN. When the AGR obtains the routing mode of the MN from the mapping server, the AGR also stores the routing mode of the MN in its own cache, and when the MN needs to send subsequent data packets, the AGR queries the MN from its own cache routing method, and forward data packets according to the routing method. That is to say, for the forwarding of data packets of the same service flow of the MN, the AGR may only send a request to the mapping server to query the routing mode of the MN.

In fact, the preset QoS level information of each MN is stored in the authentication center. When the access gateway router AGR initiates an authentication request for a certain MN to the authentication center, the authentication center also performs an authentication request for the MN. Authentication; if the authentication is successful, the authentication center can also send the service quality level information corresponding to the MN to the mapping server. At this time, when the MN initiates a service flow, it sends a request to the mapping server to query the routing mode of the MN. However, at this time, the AGR does not need to send the service quality level information corresponding to the MN to the mapping server. The mapping server selects the routing method corresponding to the MN according to the request information sent by the AGR to query the routing method of the MN, and combines the information of the service quality level corresponding to the MN obtained from the authentication center, and returns the routing method to the AGR. The AGR forwards the data message to be sent by the MN according to the received routing mode of the MN. Of course, the AGR also stores the routing mode of the MN obtained from the mapping server. When the same service flow of the MN has subsequent data packets to send, the AGR queries the routing mode of the MN from its own cache, and according to This routing mode forwards data packets.

It should be noted that the preset QoS level information of the mobile node is not limited to be stored in the authentication center, and in one embodiment, the preset QoS level information of the mobile node can also be directly stored in the mapping server. At this time, when the MN is attached, the authentication center only needs to authenticate the authentication request of a certain MN sent by the AGR, and there will be no data information exchange process. If the authentication is successful, the MN can initiate a service flow. Similarly, when the MN initiates a service flow, the AGR sends a request to the mapping server to query the routing mode of the MN, and the mapping server selects the routing mode corresponding to the MN according to the QoS level information stored by itself and returns it to the AGR . The AGR forwards the data message to be sent by the MN according to the received routing mode of the MN. Similarly, of course, the AGR also stores the routing method of the MN obtained from the mapping server. When the same service flow of the MN has subsequent messages to send, the AGR queries the routing method of the MN from its own cache. And forward the data message according to the routing mode.

In fact, when the AGR to which the MN belongs receives a data message of a service flow initiated by the MN, it does not immediately send a query to the mapping server for the routing mode of the MN. The MN will first check whether there is the routing mode of the MN's service flow in its own cache. If so, it is not necessary to send a request to the mapping server to query the routing mode of the MN's service flow, but directly according to the routing mode stored in its own cache. The routing mode of the MN forwards the data message. In this way, some unnecessary system overheads of AGR are reduced to a certain extent.

In actual application, for the service flow forwarded by the first data message initiated by the MN, the AGR can also forward the data message to the backbone network first, and then send a request to the mapping server to query the routing mode of the MN . AGR stores the information of the routing mode of the MN returned by the mapping server in its own cache. Routing mode forwards data packets.

In fact, there are many routing modes when the AGR in the identification network forwards the data message of a certain service flow of a certain mobile node. In one embodiment, the data message of the mobile node is encapsulated according to the routing location identifier (RID) according to the AGR in the identification network, so in the backbone network, the data packets are all processed according to the routing location identifier (RID). According to the characteristics of message routing, the routing mode is specifically set as a mapping relationship between user identity identifier (AID)-routing location identifier (RID). According to the AID-RID mapping relationship, the AGR selects the corresponding mapping relationship to forward the data packet.

As shown in FIG. 3 , it is a flow chart of the processing when the MN attaches in an embodiment of the present invention. Of course, before the MN attaches, the quality of service level of the mobile node and the access interfaces of the mobile node with different quality of service levels have been preset. The routing method when entering the gateway router. Below according to Fig. 3, take PPPoE mode access as an example, do further more detailed description when the MN of the present invention is attached, concrete process is as follows:

301, a PPPoE session is established between the MN and the AGR; during the session, the authentication information of the MN is sent to the AGR (the authentication information can be a user name, a password; it can also be an International Mobile Subscriber Identity code IMSI);

302. The AGR processes the PPPoE session message, and extracts the authentication information of the MN therefrom;

303. The AGR initiates an authentication request for the MN to the authentication center;

304. The authentication center authenticates the authentication request information of the MN;

305. The authentication center responds to the authentication request of the AGR, returns the authentication result (passed or not passed), and if passed, returns the QoS level of the MN to the AGR;

306. The authentication center sends the QoS level of the MN to the mapping server;

Regarding the QoS level of the MN, the authentication center can send it to the AGR or to the mapping server. In actual use, you can choose one of the two schemes.

As shown in Figure 4, it is a schematic diagram of the processing flow when the mobile node of an embodiment of the present invention initiates a service flow, and the specific processing flow when the MN initiates a service flow is as follows:

401. When the MN initiates a certain service, trigger generation of a service flow;

402. The MN sends the service flow to the AGR;

403. The AGR initiates an AID-RID mapping relationship query to the mapping server. Assuming that the authentication center sends the MN's QoS level to the AGR when the MN attaches, then when the AGR sends the mapping relationship query to the mapping server, it also needs to send the MN The QoS level sent to the mapping server;

404. The mapping server selects a suitable RID for the MN according to the QoS level of the MN;

405. The mapping server returns the mapping relationship between the AID and the RID to the AGR; the AGR encapsulates the packet of the service flow according to the mapping relationship and forwards it to the backbone network.

Applying the present invention, in the identification network, the QoS level of each MN is preset and several routing modes corresponding to the QoS levels of different MNs are preset for each AGR, thereby dividing the identification network into several different QoS levels There are different QoS guarantees between each logical plane. Therefore, according to the QoS level of the MN, selecting an appropriate routing method for the service flow initiated by the MN can realize the distribution of the service flow of the MN with different QoS levels to different The logical plane achieves the effect of guaranteeing different QoS levels.

At the same time, the present invention also provides a system for ensuring the service quality of mobile nodes in the identification network, which is characterized in that it includes a preset module and a routing module;

The preset module is used to preset the quality of service level of the mobile node and the routing mode corresponding to the access gateway router to which the mobile node of different quality of service levels belongs;

The routing selection module is configured to select a corresponding routing mode for data transmission according to the QoS level of the mobile node when the mobile node initiates a service flow.

Applying a method and system for ensuring the quality of service of mobile nodes in the identification network provided by the present invention, the operator can set different service quality levels for the mobile node according to the subscription information of the mobile node; The corresponding mapping relationship when the node accesses the access gateway router, so that when the mobile node initiates a service flow, the access gateway router to which the mobile node belongs can select the corresponding road mapping relationship for data forwarding according to the quality of service level of the mobile node. In this way, the operator can provide different levels of service quality for different mobile nodes, achieve differentiated services, refine operations, and improve the operator's own operating capabilities and competitiveness.

The above content is a further detailed description of the present invention in conjunction with specific embodiments, and it cannot be assumed that the specific implementation of the present invention is limited to these descriptions. For those of ordinary skill in the technical field of the present invention, without departing from the concept of the present invention, some simple deduction or replacement can be made, which should be regarded as belonging to the protection scope of the present invention.

Claims (10)

1. ensure a method for mobile node service quality in marked net, it is characterized in that, comprise the following steps:

Preset the service quality rating of mobile node, and routing mode corresponding during the mobile node access IAD router of default different service quality grade;

When described mobile node initiates Business Stream, described IAD router selects corresponding routing mode to carry out the forwarding of data message according to the service quality rating of described mobile node; Specifically comprise: the route map approach storing described mobile node in mapping server, when described mobile node initiates Business Stream, described IAD router sends service quality rating information corresponding to described mobile node to described mapping server and inquires about the solicited message of described mobile node routing mode, the service quality rating information that described mapping server is corresponding according to the described mobile node received, selects routing mode corresponding to described mobile node and returns to described IAD router; Described IAD router carries out the forwarding of data message according to the routing mode that described mapping server sends.

2. the method for claim 1, is characterized in that, when described mobile node attach to network, authentication center also carries out certification to the authentication request to described mobile node that described IAD router is sent; If authentication success, then described mobile node carries out the operation initiating Business Stream.

3. method as claimed in claim 2, it is characterized in that, the information of the service quality rating of described default mobile node is stored in described authentication center, if authentication success, service quality rating information corresponding for described mobile node is then sent to described IAD router by described authentication center.

4. method as claimed in claim 2, it is characterized in that, the information of the service quality rating of described default mobile node is stored in described authentication center, if authentication success, service quality rating information corresponding for described mobile node is then sent to mapping server by described authentication center.

5. method as claimed in claim 2, it is characterized in that, the route map approach of described mobile node is stored in described mapping server, when described mobile node initiates Business Stream, described IAD router sends the solicited message of the described mobile node routing mode of inquiry to described mapping server, the service quality rating information that described mapping server is corresponding according to the described mobile node obtained from described authentication center, selects routing mode corresponding to described mobile node and returns to described IAD router.

6. method as claimed in claim 2, it is characterized in that, the information of the service quality rating of described default mobile node and the route map approach of described mobile node are stored in mapping server, if authentication center's authentication success and when described mobile node initiates Business Stream, described IAD router sends the solicited message of the described mobile node routing mode of inquiry to described mapping server, the service quality rating information that the described mobile node that described mapping server stores according to self is corresponding, select routing mode corresponding to described mobile node and return to described IAD router.

7. the method as described in claim 1 or 5 or 6, it is characterized in that, described IAD router is before the routing mode sending the described mobile node of inquiry to described mapping server, also inquire about the routing mode whether having described mobile node in own cache, if any, then the forwarding of data message is carried out according to the routing mode of the described mobile node stored in own cache.

8. the method as described in claim 3 or 4, it is characterized in that, when described mobile node initiates Business Stream first, the forwarding of the advanced row data message of described IAD router, send the solicited message of the described mobile node routing mode of inquiry again to described mapping server, and the routing mode of the described mobile node returned by described mapping server is stored in own cache.

9. the method as described in as arbitrary in claim 1-6, is characterized in that, described routing mode is specially the mapping relations of User Identity AID-route location mark RID.

10. ensure a system for mobile node service quality in marked net, it is characterized in that, comprise and be arranged at intrasystem presetting module, routing selecting module and mapping server;

Described presetting module is used for presetting the service quality rating of mobile node, and routing mode corresponding during the mobile node access IAD router of default different service quality grade;

Described mapping server is for storing the route map approach of described mobile node;

Described routing selecting module is used for, when described mobile node initiates Business Stream, selecting corresponding routing mode to carry out the forwarding of data message according to the service quality rating of described mobile node; Specifically for: when described mobile node initiates Business Stream, send service quality rating information corresponding to described mobile node to described mapping server and inquire about the solicited message of described mobile node routing mode, and receiving routing mode corresponding to described mobile node that the described mapping server service quality rating information corresponding according to the described mobile node received returns, the routing mode sent according to described mapping server carries out the forwarding of data message.