CN102572828B

CN102572828B - Method, device and system for supporting mobile type IP (internet protocol) sub-network access and management

Info

Publication number: CN102572828B
Application number: CN201110109984.3A
Authority: CN
Inventors: 解冲锋; 孙琼; 陈运清
Original assignee: China Telecom Corp Ltd
Current assignee: China Telecom Corp Ltd
Priority date: 2010-12-08
Filing date: 2011-04-29
Publication date: 2015-04-01
Anticipated expiration: 2031-04-29
Also published as: CN102572828A

Abstract

The invention discloses a method, device and system for supporting mobile type IP (internet protocol) sub-network access and management. The characteristics that the high-speed public transportation means has a fixed track or a route are combined and the NMCP (Network Mobility Management Protocol) of MR (mobility router) and NMAR (network mobility access router) is defined in the invention. As a core control protocol of the IP bearer network and the mobile IP sub-network, the protocol can realize NMAR dynamic discovery, MR registration, NMAR dynamic maintenance in MR, control on MR-Prefix route distribution and MR/NMAR lifetime management, the IP layer switch delay can be reduced and the communication quality of upper layer service when switching can be ensured by a rational design.

Description

Support the access of mobile model IP subnet and the method, the equipment and system that manage

Technical field

The present invention relates to linking Internet technical field, refer to a kind of support method, equipment and system that mobile model IP subnet accesses and manages especially.

Background technology

In recent years, rapid is dissolved in the life of people more and more, as the facility such as aircraft, high ferro, efficiently trip mode have become the first-selection of travelling.Simultaneously, along with the high speed development of the Internet, people also strengthen greatly for the dependence of network, work, amusement, life be all closely bound up with network, therefore, in rapid, diversified broadband communication services how is provided will to be very important.

Because the Internet does not fully take into account ambulant demand at the beginning of design, IP address have employed level and distributes the mode with management in the whole world, emphasis solves the scalability problem of route.IP address is the station location marker of user in the Internet, when user moves to different networks, usual needs adopt and communicate with the IP address prefix corresponding to this region, therefore, user can have to due to the change of position in a network adopt different IP addresses in moving process, but for the continuous type application on the Internet (as video communication, voice communication and instant messaging etc.), the process of ongoing communication can be interrupted due to the change of IP address, this is unacceptable for user, therefore this problem is solved in the urgent need to finding new way, realize the ability for Mobile IP subnet (Mobilesubnet) in IP bearer network.

IP subnet mobile system based on NMCP mainly comprises following functional network element equipment: mobile router (MR), the mobile couple in router (NMAR) being positioned at carrying IP network edge and border router (BR).For public internet, the network in rapid is exactly the IP network in a high-speed mobile, also can be seen as a part for the Internet, therefore can be described as Mobile IP subnet.Mobile router MR is arranged in rapid, and it is the key equipment of Mobile IP subnet, is internally responsible for converging all user terminals of access and miscellaneous equipment as gateway, to user terminal distributing IP v4/IPv6 address, and provides Internet access service.Externally be linked in IP bearer network by wireless access links, the connection of realization and public internet net.MR switches its position in IP bearer network along with the high-speed mobile of train (aircraft etc.).Usually, in order to ensure the continuity of MR in moving process business at the middle and upper levels, need for MR distributes a fixing IP prefix (being called MR-Prefix in literary composition).Mobile couple in router NMAR is the couple in router of MR, it is positioned at the edge of IP bearer network, MR, in the process of high-speed mobile, is needed to realize switching between different N MAR according to factors such as its current locations, MR-Prefix also will be needed simultaneously outwards to be noticed by NMAR.Border router BR will be polymerized mobile for multiple difference prefix MR-Prefix, and notices one or a small amount of convergence route to public network, thus reduces the impact on existing network route.

Suitable access point is linked into based on current location in order to realize Mobile IP subnet, and the quick switching realized in moving process between different N MAR, the control protocol of supporting network movement is vital, it be realize MR Move Detection, MR and NMAR finds mutually, MR certification registration, MR-Prefix prefix advertisement, lifetime management etc. the key of functional module, be realize the ambulant core protocol of IP subnet.

The control protocol of Mobile IP subnet normally needs with the implementation of Mobile IP to be maintain close ties with.In the Mobile IP implementation of tradition based on home agent, because mobile node MN needs to set up the binding relationship with home agent in moving process, therefore, its mobility control protocol generally include mobility detect mechanism, Care-of Address generation, with the Binding Update of home agent and Correspondent Node and management etc.There is transmission path optimization (i.e. Triangle routing problem), handover delay and change larger problem greatly, to existing network and communication terminal in this Mobile IP implementation based on home agent, therefore, cannot really have been used in a large scale in existing network.And for the Mobile IP scheme based on route, corresponding mobility control protocol is also still imperfect.In the pure dynamic routing scheme of the BGP of Boeing, NMAR and MR adopts simple BGP routing mode, and prefix advertisement wherein, the security credential of MR etc. all directly adopt bgp protocol itself.This mode can depend critically upon the implementation of bgp protocol itself.First, need repeatedly to re-establish bgp neighbor relation due to during the switching of MR between multiple NMAR, this will affect the handover delay of MR greatly; Secondly, the fail safe of bgp protocol controls usually have larger protocol overhead, is not suitable for using in high speed handoff environment.

Summary of the invention

In view of this, the object of the invention is to propose a kind of support method, equipment and system that mobile model IP subnet accesses and manages.

Based on above-mentioned purpose a kind of method that mobile model IP subnet accesses and manages of supporting provided by the invention, comprising:

Mobile couple in router (NMAR) to self service area send broadcast, carry in this broadcast include self serve port IP address at interior NMAR attribute information;

After couple in router (MR) receives the broadcast coming from new NMAR, the NMAR attribute information extracted wherein is kept in the NMAR list of self, and send MR registration message to this NMAR, and carry in registration message and include self port IP address at interior MR attribute information;

After NMAR receives the registration message of MR, the MR attribute information extracted wherein is kept in the MR list of self, and replys registration confirmation message to this MR;

If the NMAR of current service can not continue to provide service again, then MR inquires about current NMAR list, selects the NMAR that new, and sends routing configuration request to this new NMAR;

After NMAR receives the routing configuration request of MR, by the IP prefix advertisement of this MR in IP bearer network, and complete the routing configuration of this NMAR to this MR, send routing configuration acknowledge message to this MR;

After MR receives the routing configuration acknowledge message of NMAR, the route of configuration MR to NMAR, and send route withdraw request to the NMAR of former service;

After NMAR receives the route withdraw request of MR, implement the IP prefix route withdraw of this MR, and the configuration of synchronized update local routing, the MR to request sends and exits request.

Optionally, NMAR described in the method comprises to the process of the service area transmission broadcast of self: described NMAR timing sends broadcast to the service area of self.

Optionally, NMAR described in the method comprises to the process of the service area transmission broadcast of self: described MR broadcasts NMAR and triggers broadcast, and the service area to self after NMAR receives this triggering broadcast sends broadcast.

Optionally, also comprise in the broadcast that NMAR described in the method sends: broadcast transmission interval information.

Optionally, also comprise in NMAR attribute information described in the method: the working load of the identifier of NMAR current state, NMAR and descriptor, NMAR serve port IPv4/IPv6 address, the type of NMAR, the timestamp information of NMAR and heartbeat message interval time, NMAR.

Optionally, also comprise in MR attribute information described in the method: identity information, the operation mode of MR, the current state of MR, the timestamp of MR after the identifier of MR, the IPv4/IPv6 address of MR, MR encryption.

Optionally, NMAR is divided into following different queue by the NMAR list inside in MR described in the method: serve NMAR, enliven NMAR and idle NMAR;

After MR receives the broadcast coming from new NMAR, the attribute information of this NMAR is kept in the idle NMAR queue of NMAR list;

After MR receives the registration confirmation message of NMAR, that the attribute information of this NMAR is transferred to NMAR list enlivens in NMAR queue;

Described MR inquires about current NMAR list, the process after a new NMAR is selected also to comprise: MR inquires about current NMAR list in enlivening in NMAR queue of NMAR list, after selecting a new NMAR, the attribute information of this new NMAR is transferred in service NMAR queue, the attribute information of former service NMAR is transferred to from service NMAR queue and enlivens NMAR queue.

Optionally, MR described in the method sends heartbeat message to the NMAR enlivened in NMAR queue and service NMAR queue further, if do not receive the feedback of NMAR in the given time, is then transferred in idle NMAR queue by the attribute information of this NMAR.

Optionally, MR is divided into following different queue in the MR list inside of described NMAR by the method: serve MR, enliven MR and idle MR;

After NMAR receives the registration request of MR, the attribute information of this MR is saved in and enlivens in MR queue;

After NMAR receives the routing configuration request of MR, the attribute information of this MR is transferred in service MR queue;

If do not receive the heartbeat message of MR in the scheduled time, then the attribute information of this MR is transferred in idle MR queue.

In another aspect of this invention, additionally provide the access of a kind of support mobile model IP subnet based on said method and the system of management, comprising:

Mobile couple in router (NMAR), for self service area send broadcast, carry in this broadcast include self serve port IP address at interior NMAR attribute information; After receiving the registration message of MR, the MR attribute information extracted wherein is kept in the MR list of self, and replys registration confirmation message to this MR; After the routing configuration request receiving MR, by the IP prefix advertisement of this MR in IP bearer network, and complete the routing configuration of this NMAR to this MR, send routing configuration acknowledge message to this MR; After the route withdraw request receiving MR, implement the IP prefix route withdraw of this MR, and the configuration of synchronized update local routing, the MR to request sends and exits request;

Couple in router (MR), for receive come from new NMAR broadcast after, the NMAR attribute information extracted wherein is kept in the NMAR list of self, and send MR registration message to this NMAR, and carry in registration message and include self port IP address at interior MR attribute information; If the NMAR of current service can not continue to provide service again, then MR inquires about current NMAR list, selects the NMAR that new, and sends routing configuration request to this new NMAR; After receiving the routing configuration acknowledge message of NMAR, the route of configuration MR to NMAR, and send route withdraw request to the NMAR of former service.

Optionally, this system also comprises:

Edge router BR, is responsible for the route of multiple Mobile IP subnet being carried out converging and issuing, by outwards issuing convergence route.

In another aspect of this invention, additionally provide a kind of mobile couple in router NMAR and realize the access of mobile model IP subnet and the method managed,

NMAR to self service area send broadcast, carry in this broadcast include self serve port IP address at interior NMAR attribute information;

In another aspect of this invention, additionally provide a kind of couple in router (MR) and realize the access of mobile model IP subnet and the method managed,

After MR receives the broadcast coming from new NMAR, the NMAR attribute information extracted wherein is kept in the NMAR list of self, and send MR registration message to this NMAR, and carry in registration message and include self port IP address at interior MR attribute information;

After MR receives the routing configuration acknowledge message of NMAR, the route of configuration MR to NMAR, and send route withdraw request to the NMAR of former service.

In another aspect of this invention, additionally provide a kind of mobile couple in router (NMAR) realizing the access of mobile model IP subnet and management, comprising:

NMAR broadcast transmission module, for self service area send broadcast, wherein carry in this broadcast include self serve port IP address at interior NMAR attribute information;

MR MSG message receiver, for after receiving the registration message of MR, the MR attribute information extracted wherein is sent to MR list maintenance module and is kept in MR list, and replys registration confirmation message to this MR; After the routing configuration request receiving MR, indicate MR routing configuration module by the IP prefix advertisement of this MR in IP bearer network, and complete the routing configuration of this NMAR to this MR, MR MSG message receiver sends routing configuration acknowledge message to this MR; MR MSG message receiver, after the route withdraw request receiving MR, implements the IP prefix route withdraw of this MR, and indicates MR routing configuration module synchronization to upgrade local routing configuration, and the MR to request sends and exits request;

MR list maintenance module, for the instruction according to MR MSG message receiver, performs the operation of corresponding MR list maintenance;

MR routing configuration module, for the instruction according to MR MSG message receiver, performs the operation of corresponding routing configuration.

Optionally, described NMAR broadcast transmission module comprises to the process of the service area transmission broadcast of self: described NMAR timing sends broadcast to the service area of self.

Optionally, described NMAR broadcast transmission module comprises to the process of the service area transmission broadcast of self: described MR broadcasts NMAR and triggers broadcast, and the service area to self after NMAR receives this triggering broadcast sends broadcast.

Optionally, also comprise in the broadcast that described NMAR broadcast transmission module sends: broadcast transmission interval information.

Optionally, also comprise in described NMAR attribute information: the working load of the identifier of NMAR current state, NMAR and descriptor, NMAR serve port IPv4/IPv6 address, the type of NMAR, the timestamp information of NMAR and heartbeat message interval time, NMAR.

Optional described MR list maintenance module, is divided into following different queue in the MR list inside of described NMAR by MR: serve MR, enliven MR and idle MR; After NMAR receives the registration request of MR, the attribute information of this MR is saved in and enlivens in MR queue; After NMAR receives the routing configuration request of MR, the attribute information of this MR is transferred in service MR queue; If do not receive the heartbeat message of MR in the scheduled time, then the attribute information of this MR is transferred in idle MR queue.

In another aspect of this invention, additionally provide a kind of couple in router (MR) realizing the access of mobile model IP subnet and management, comprising:

NMAR radio receiver, for receiving the broadcast coming from new NMAR, the NMAR attribute information extracted wherein is kept in NMAR list;

MR MSG message sender, for sending MR registration message to described new NMAR, and carries and includes self port IP address at interior MR attribute information in registration message; During route handoff, send routing configuration request to the object NMAR switched, receive the routing configuration acknowledge message of this NMAR, send route withdraw request to former service NMAR;

NMAR list maintenance and selection module, perform NMAR list maintenance and selection, if the NMAR of current service can not continue to provide service again, then inquire about current NMAR list, select the NMAR that new, and indicate described MR MSG transmitter to send routing configuration request to this new NMAR;

Route establishment module, operates for performing Route establishment according to NMAR list maintenance with the instruction of selection module;

Route withdraw module, for performing with selecting the instruction of module the operation cancelling NMAR route according to NMAR list maintenance;

Local routing configuration module, for performing concrete routing configuration operation.

Optionally, also comprise in described MR attribute information: identity information, the operation mode of MR, the current state of MR, the timestamp of MR after the identifier of MR, the IPv4/IPv6 address of MR, MR encryption.

Optionally, NMAR is divided into following different queue by described NMAR list inside: serve NMAR, enliven NMAR and idle NMAR;

Optionally, described MR MSG transmitter sends heartbeat message to the NMAR enlivened in NMAR queue and service NMAR queue further, if do not receive the feedback of NMAR in the given time, is then transferred in idle NMAR queue by the attribute information of this NMAR.

As can be seen from above, the access of mobile model IP subnet and the method, the equipment and system that manage is supported, for the Mobile IP subnet being positioned at the rapid such as high ferro and aircraft provides a kind of novel mobility control protocol.The program for guaranteeing the Control on Communication in Mobile IP subnet between mobile router MR and mobile couple in router NMAR, mainly comprise the Dynamic Discovery of NMAR, the registration of MR, the current route of MR issue with cancel and MR/NMAR time-out manage.When wireless link is stable, the program can realize the seamless switching of Mobile IP subnet between NMAR all sidedly, thus for Mobile IP subnet sets up optimum data transmission route in IP bearer network." NMAR broadcast " with " the MR heartbeat message designed in this programme " can ensure that MR and NMAR detects two-way state in time; The log-in protocol of MR can realize the fail safe that NMAR accesses for MR and control; The issue of route is the important mechanisms that the high speed realizing Mobile IP subnet switches with cancelling; The overtime administrative mechanism of last MR/NMAR is then the important leverage realizing the switching of MR and NMAR state.In a word, the present invention is the communication control processor between Mobile IP subnet and IP bearer network, is the important realization mechanism realizing the switching of IP subnet Seamless Mobile.

NMCP (network mobility control protocol) and equipment thereof realize proposing for solving problems.First this programme devises the session protocol between the IP subnet of movement and IP bearer network edge device, this agreement adopts the technology of dynamic routing Real-time Notification, in the moving process of rapid, the IP address prefix of the IP subnet of movement is communicated in time and supports to go in the IP bearer network of subnet movement, timely adjustment and the renewal of route is realized based on its current location, thus in IP bearer network, set up best IP route for Mobile IP subnet, ensure data transmission quality.Secondly, which can reduce the impact on public network route by the mode of route aggregation, avoids producing route oscillation in a network.Based on above design, this method reaches the IP subnet of high-speed mobile and internal user terminal keeps same IP address and the effect of prefix in the process of communication, and the program for user terminal without any special requirement, the terminal of any accessing Internet under fixed network environment need not any change just can under Mobile IP network environment accessing Internet.Compare traditional Mobile IP mode such as Mobile IP and NEMO, new NMCP mode solves the Triangle routing problem in IP network, realizes route optimisation process.

This programme be based on dynamic routing switch realize IP subnet in moving process accessing Internet core control protocol, can realize NMAR access point Dynamic Discovery, MR registration and certification, NMAR switching controls, the routing configuration of MR and NMAR and the timeout treatment etc. of NMAR and MR, be a kind of novel Mobile IP subnet fast handoff technique.Compare traditional mobile IP technology, this programme have handover delay low, avoid the features such as Triangle routing, improve data forwarding performance by routing optimality, be suitable for mobility in the high-speed transit vehicles and switch.

2) this programme introduces the certification login mechanism of MR to NMAR, the fail safe of certification is ensured by introducing the MR identity information field after encryption, carry out registering and certification in AliveNMAR list before enforcement switches, the fail safe that MR accesses can be ensured on the one hand, can also handover delay be reduced on the other hand, realize the believable seamless switching of user.

3) this programme introduces the two-way discovery mechanism of MR and NMAR.Wherein, MR regularly publishes " MR heartbeat message ", NMAR is periodic broadcasting then " NMAR broadcast ".The MR (or NMAR) that MR and NMAR Timeliness coverage lost efficacy can be guaranteed like this, and carry out corresponding routing configuration operation, thus ensure that Mobile IP subnet is in operation and can find fast and respond the situation of change of network element state.

4) this programme proposes the Dynamic Maintenance mechanism of MR and NMAR list, for different switchover policy, can adjust the list of MR and NMAR adaptively, accelerate the selection course of NMAR.

5) this programme realizes having no requirement for user terminal, and any terminal used under cable broadband environment directly by this programme system access the Internet, can compare the threshold that traditional Mobile IP scheme greatly reduces introducing.

6) based on the system compatible conventional network equipment that this programme realizes, the intercommunication with conventional network equipment can easily be realized.Other router device in IP bearer network is had no requirement.

7) this programme is a kind of IP layer solution, for radio access layer without any special requirement, as long as it can set up the wireless access links between MR to NMAR, radio access layer can be avoided after introducing IP layer mobility solution to move access for subnet and to do special design.

Accompanying drawing explanation

Fig. 1 is the system group network scheme schematic diagram that the embodiment of the present invention supports the access of Mobile IP subnet and carrying;

Fig. 2 is the NMAR queue schematic diagram in embodiment of the present invention MR;

Fig. 3 is embodiment of the present invention NMCP entire system schematic flow sheet;

Fig. 4 is the high-level schematic functional block diagram of embodiment of the present invention MR and NMAR.

Embodiment

For making the object, technical solutions and advantages of the present invention clearly understand, below in conjunction with specific embodiment, and with reference to accompanying drawing, the present invention is described in more detail.

The present invention has the fixing feature in track or course line in conjunction with high speed public transport, defines the mobility control protocol NMCP (Network MobilityManagement Protocol) of MR and NMAR.This agreement is as the core control protocol of IP bearer network and Mobile IP subnet, control and the MR/NMAR lifetime management of NMAR state-maintenance, the issue of MR-Prefix route in NMAR Dynamic Discovery, MR registration, MR can be realized, reduce IP layer handover delay by appropriate design, ensure the communication quality of upper-layer service when switching.

In the scheme that the present invention proposes, NMCP agreement is the access control being applied to Mobile IP subnet, interaction mechanism between the network elements such as new Protocol Design mobile router MR and access server NMAR, realizes the NMAR discovery in high speed movement, MR access registration, MR route issue and cancel and MR/NMAR time-out manages.This agreement firstly to control and management level agreement towards supporting the mobility that dynamic routing issues between Mobile IP subnet and IP bearer network, has good extensibility and robustness, be applicable to the application in many scenes.Meanwhile, the contemporary Table I Pv4 of IP agreement in present patent application and IPv6 agreement, the New function of namely all designs supports IPv4 and IPv6 agreement simultaneously, is a kind of scheme supported to Next Generation Internet transition.

A kind of method that mobile model IP subnet accesses and manages of supporting provided by the invention, mainly comprises:

Wherein, described NMAR can be the service area transmission broadcast of timing to self to the process of the service area transmission broadcast of self.

Described NMAR can also comprise to the process of the service area transmission broadcast of self: described MR broadcasts NMAR and triggers broadcast, and the service area to self after NMAR receives this triggering broadcast sends broadcast.

Can also comprise in the broadcast that described NMAR sends: broadcast transmission interval information etc.Can also comprise in described NMAR attribute information: the working load of the identifier of NMAR current state, NMAR and descriptor, NMAR serve port IPv4/IPv6 address, the type of NMAR, the timestamp information of NMAR and heartbeat message interval time, NMAR.Can also comprise in described MR attribute information: identity information, the operation mode of MR, the current state of MR, the timestamp of MR after the identifier of MR, the IPv4/IPv6 address of MR, MR encryption.

NMAR is divided into following different queue by the NMAR list inside in described MR: serve NMAR, enliven NMAR and idle NMAR;

Described MR sends heartbeat message to the NMAR enlivened in NMAR queue and service NMAR queue further, if do not receive the feedback of NMAR in the given time, is then transferred in idle NMAR queue by the attribute information of this NMAR.

In the MR list inside of described NMAR, MR is divided into following different queue: serve MR, enliven MR and idle MR;

Present invention also offers a kind of system that mobile model IP subnet accesses and manages of supporting, mainly comprise:

NMAR, for self service area send broadcast, carry in this broadcast include self serve port IP address at interior NMAR attribute information; After receiving the registration message of MR, the MR attribute information extracted wherein is kept in the MR list of self, and replys registration confirmation message to this MR; After the routing configuration request receiving MR, by the IP prefix advertisement of this MR in IP bearer network, and complete the routing configuration of this NMAR to this MR, send routing configuration acknowledge message to this MR; After the route withdraw request receiving MR, implement the IP prefix route withdraw of this MR, and the configuration of synchronized update local routing, the MR to request sends and exits request;

MR, for receive come from new NMAR broadcast after, extract NMAR attribute information to be wherein kept in the NMAR list of self, and send MR registration message to this NMAR, and carry in registration message and include self port IP address at interior MR attribute information; If the NMAR of current service can not continue to provide service again, then MR inquires about current NMAR list, selects the NMAR that new, and sends routing configuration request to this new NMAR; After receiving the routing configuration acknowledge message of NMAR, the route of configuration MR to NMAR, and send route withdraw request to the NMAR of former service.

As an embodiment, the composition of system as shown in Figure 1:

In figure, IP bearer network is the access network of Mobile IP subnet, comprise multiple mobile couple in router, can support that the quick switching of Mobile IP subnet between multiple mobile couple in router and route are issued and cancelled, the safe and reliable access of Mobile IP subnet is provided, and the data traffic in Mobile IP subnet is forwarded in public internet.

Following composition network element is mainly contained in this system:

(1)MR

MR is the couple in router of Mobile IP subnet, be usually located in rapid (as high ferro or aircraft), its function is: be internally responsible for converging all user terminals of access as gateway, there is to user terminal and other equipment distributing IP v4/IPv6 address of data communication needs, and Internet access service is provided.Externally be linked in IP bearer network by wireless access links, be responsible for the information such as the account number of oneself provided to the access point of IP bearer network in IP aspect to register, and notice the IPv4/IPv6 address prefix of oneself; After being linked into IP bearer network by access point, being responsible for the data traffic that forwarding user terminal is sent to public network and receives from public network, and possessing the necessary functions of client gateway.

For certain specific access point NMAR equipment, MR has following four kinds of states: idle (Idle) state, active (Alive) state, current service status (Servicing) and off-line state (Offline).

Wherein, idle condition (Idle) refers to the communication can setting up three layers (IP) between MR and NMAR, typically referring to MR is positioned within overlay area (i.e. service area) scope of NMAR, but for a certain reason (as too weak in wireless signal, to confiscate NMAR in a short time broadcast or do not pass through authentication registration), now NMAR can not provide service for this MR.

Active (Alive) state refers to and completes authentication registration between MR and NMAR, and be in the state waiting for that this NMAR serves, this situation is generally because this MR may be served by other NMAR.

Current service (Servicing) state refers to that current MR just provides data forwarding service by this NMAR.

Off-line state (Offline) refers to the communication cannot setting up three layers (IP) between MR and NMAR, and within the coverage that normally MR is not in NMAR, wireless communication link interrupts, or the situations such as fault have appearred in MR.

(2)NMAR

NMAR is mobile couple in router (NMAR:Mobile Network AccessRouter), it is for Mobile IP subnet provides mobile access service, be responsible for the key equipment that Mobile IP subnet authentication registration, enforcement dynamic routing foundation, customer traffic forwarding and high speed routing switch, its function is: be responsible for carrying out access control to Mobile IP subnet; The current location of each Mobile IP subnet in follow-up service district, notices the route prefix of this Mobile IP subnet in IP bearer network after the registration of Mobile IP subnet; This equipment, after setting up route for mobile subnetwork, is that Mobile IP subnet implements converting flow according to current route; Receive the route handoff message of MR and coordinate Mobile IP subnet to implement route handoff.

For certain specific MR, NMAR also has following four kinds of states: idle (idle) state, active (alive) state, current service status (Servicing) and off-line state (Offline), is respectively connection setup and but service state, connection setup wouldn't can provides service state, current data forwarding state and cannot set up communications status.

It should be noted that the off-line state of MR and NMAR needs independent detection.Wherein, the off-line state of MR is that the timeout mechanism by running in NMAR detects, and the off-line state of NMAR is then that the timeout mechanism by running in MR detects.

(3)BR

BR (Border Router) is the border router of IP bearer network and outside public internet, it is the boundary access point of IP bearer network and public internet, its function is: be responsible for the route of multiple Mobile IP subnet to carry out converging and issuing, by outwards issuing convergence route, thus reduce the impact of dynamic for route in the Internet of IP bearer network.

In FIG, NMCP agreement of the present invention operates between MR and NMAR, the discovery of NMAR, the authentication registration of MR, route dynamic publishing can be realized and cancel and the function such as state-maintenance of NMAR, MR and NMAR needing adopt custom-designed MR and NMAR protocol function.The dynamic routing protocol of employing standard is then only needed between NMAR and BR, although BR is the part in native system, but the scheme proposed in this patent for BR router without any new functional requirement, as supported, OSPF or Intermediate System to Intermediate System etc. just can use as BR the ip router of traditional support, do not need to run extra protocol module.

2, system realizes

In NMCP agreement, mainly comprise following components: NMAR finds, MR registers and certification, NMAR switching controls, the routing configuration of MR and NMAR and the timeout treatment of NMAR and MR.

(1) NMAR finds

In NMCP agreement, NMAR regularly sends the existence that broadcast (or multicast) " NMAR broadcast " notices oneself in oneself service area.Be somebody's turn to do the attribute informations such as " NMAR broadcast " IP address containing the serve port of oneself.

Except the periodicity broadcast of NMAR, MR also can initiatively trigger " NMAR broadcast ", for accelerating the address information obtaining NMAR.Usually, the broadcast transmission interval MR_discovery_interval of self can be carried in the broadcast that NMAR sends, if MR wishes the broadcast receiving NMAR before the time period ends, MR can directly broadcast (or multicast) " NMAR triggers broadcast ", and NMAR can reply " NMAR broadcast " after receiving that message immediately.

In addition, for the ease of implementing the selection of NMAR and follow-up user authentication and registration, carrying the association attributes of NMAR in " NMAR broadcast " that NMAR sends, being denoted as Profile (NMAR), comprising following information:

The current state of NMAR: current_status, shows that current NMAR is in running status;

The identifier of NMAR and descriptor: NMAR_id and description information, for identifying the attribute of this NMAR;

NMAR serve port IPv4/IPv6 address: ip_addr/ipv6_addr

The type of NMAR: type, for identifying the wireless network type that this NMAR accesses, as EVDO, WiFi etc.;

The timestamp information of NMAR and heartbeat message interval time: time_stamp, MR_discovery_interval, wherein, time_stamp is the timestamp of current broadcast message, and MR_discovery_interval is then the interval time of broadcasting packet;

The working load of NMAR: NMAR_load, is used to indicate the working load that NMAR is current;

(2) MR registration and certification

After the discovery completing NMAR, for accelerating the handoff procedure of follow-up MR, MR can carry out registering and certification on all NMAR found.MR, when registering, can notice the association attributes of its correspondence, now adopt the mode of clean culture to communicate, send " MR registration message " to NMAR.The association attributes of MR can be carried in this message, be denoted as Profile (MR), comprise following information:

The identifier of MR: mr_id, for identifying MR

The IPv4/IPv6 address of MR: ipv4_addr/ipv6_addr, for noticing its port IP address of NMAR;

Identity information after MR encryption: credential, carries out certification for NMAR for MR;

The operational mode of MR: running_mode, for illustration of the switch mode adopted;

The current state of MR: current_status

The timestamp of MR: time_stamp

NMAR, after have received the registration message of MR, according to the identity information after the encryption of MR, can carry out the security credential of MR, if by after certification, just this MR can be joined in the served MR list of oneself.

(3) NMAR switching controls

NMAR switching controls in this programme is initiated by MR.Under certain condition, as current NMAR can not continue to provide service again, when MR determines to need to implement the switching between NMAR, MR just inquire about current can be service is provided oneself NMAR list NMAR1, NMAR2 ..., NMARn}, selects a new NMAR as the NMARn providing service for oneself.Here, usually carry out decision-making according to association attributes in NMAR list, thus determine to switch the NMAR of access and concrete switching time.

Wherein, MR determines that the NMAR switching access needs to consider following parameter information usually:

NMAR signal strength signal intensity: NMAR_signal_strength, shows the wireless access signal strength signal intensity of this NMAR

The present load of NMAR: NMAR_load, for showing the current service load of NMAR

The positional information of MR: MR_location, can realize in conjunction with locating module usually;

The rate travel of MR: MR_speed, can obtain relevant parameter by the related device etc. that tests the speed usually;

NMAR positional information: NMAR_location, is normally write by pre-configured mode.

Network operator can according to customer specific requirements prefabricated switchover policy in advance when designing MR.

(4) routing configuration of MR and NMAR

After the switching controls completing MR and NMARn, MR just needs to send " NMAR switches message " on the NMARn+1 of new access.Detailed process is: the route cancelling MR on original NMARn, and injects advertising of route on the NMARn+1 of new access.Here routing configuration comprises MR to NMAR, and two parts between NMAR and BR.In order to reduce handover delay, usually static routing protocol is adopted between MR and NMAR, then adopt dynamic routing protocol in IP bearer network, issue the up-to-date route of Mobile IP subnet between NMAR and BR, the current location of this route reflection mobile subnetwork in IP bearer network.After the route on NMARn+1 has come into force, transfer of data just can have been forwarded by NMARn+1.

In addition, be the routing iinformation of available MR in order to ensure the route on NMAR, MR needs the heartbeat message of timed sending Keepalive, if NMAR does not receive the heartbeat message of MR for a long time, just thinks that this MR lost efficacy, should cancel the corresponding route on this NMAR.

(5) list maintenance of NMAR and MR and timeout treatment

In NMAR and MR, need to safeguard respective corresponding with service list.

NMAR list in MR can be divided into different queues according to its different state: service (Serving) NMAR, active (Alive) NMAR and free time (Idle) NMAR.Wherein, serve (Servicing) NMAR list and refer to the current NMAR that service is being provided.Active (Alive) NMAR list be carried out being in of authentication registration can the NMAR list of service state, NMAR herein according to AP switching control strategy reverse, the element that just can extract chained list head like this when NMAR selects operates.When being in the NMAR in service queue and not receiving in certain hour AP_SERVICING_TIMEOUT the broadcast of MR, the NMAR being arranged in service queue will be moved to idle queues by MR, and (wherein MR can send heartbeat message to NMAR, to confirm whether NMAR have received the broadcast of MR), and from active queue, select a follow-up NMAR served to carry out data retransmission.And for being in the NMAR of service queue and active queue, if MR is more than the broadcast also not receiving NMAR in the AP_ALIVE_TIMEOUT time, then it is transferred to active queue and idle queues respectively.And for the NMAR of process idle queues, if MR is more than the broadcast also not receiving NMAR in the AP_IDLE_TIMEOUT time, then it is deleted from idle queues.Like this, the queue of these three NMAR will carry out certain adjustment along with inspiring message.Be illustrated in fig. 2 shown below:

NMAR queue in Fig. 2 MR

Equally, the MR list in NMAR also can be divided into different queues according to its different state: service (Serving) MR queue, active (Alive) MR queue and idle (Idle) MR.Wherein, service (Servicing) MR queue refers to that current NMAR is providing the MR queue of service, active (Alive) MR is current active and can be served by this NMAR but also not be in the MR queue of serviced state, idle (Idle) MR be then current to be in service area but the free time can not be serviced MR queue.Select owing to not relating to MR access in this programme, therefore, the queue order in MR is without particular/special requirement.

3, the protocol message kind of MR and NMAR

In newly-designed NMCP agreement, in order to realize, NMAR finds, MR registers and certification, NMAR switching controls, the routing configuration of MR and NMAR and the timeout treatment etc. of AP and MR, comprises multiple type of message between MR and NMAR, as shown in table 1 below:

The protocol message list of table 1MR and NMAR

4, system flow explanation

NMCP entire system flow process is illustrated in fig. 3 shown below:

Fig. 3 is NMCP system cloud gray model schematic flow sheet

(1) when MR enters into NMAR1 service area, MR can receive the fixed time broadcast message of NMAR1.When MR receives " NMAR broadcast ", the NMAR list of current idle will be set up at MR, and extract the information such as the IP address prefix of this NMAR, NMAR1 be joined in idle NMAR list, send clean culture " MR registration message " to this NMAR.Wherein, the effect of the IP address prefix of described NMAR is mainly as the mark of NMAR, described being joined by NMAR1 in idle NMAR list can be saved in described idle NMAR list by this IP address prefix, and the detailed process below certain NMAR being joined certain NMAR list can take which.

(2) NMAR1 is when " the MR registration message " received, and will therefrom extract the association attributeses such as the MR-Prefix of MR, and carries out trust verification according to the identity information Credential of its encryption.If this MR have passed authentication in NMAR1, this MR will join and enliven in MR list by NMAR1, and replys acknowledge message ACK; Otherwise, then this MR is joined in idle MR list.Describedly being joined by MR in MR list, can be specifically joined in corresponding MR list by the MR-Prefix of this MR.

(3) when MR receives the registration confirmation message of NMAR1, i.e. ACK message, NMAR1 just transfers to and current enlivens NMAR list by MR.Only have a member owing to now enlivening NMAR list, therefore, NMAR1 is just chosen as and can serves NMAR, and NMAR1 is transferred to the NMAR list of current service in this MR.

(4) after this, MR regularly can send heartbeat message to NMAR1, and sends routing configuration request to NMAR1.

(5) NMAR1 is after receiving routing configuration request, will call routing configuration module, is communicated to by the MR-Prefix of this MR in IP bearer network, also needs to call local routing configuration module simultaneously, completes the routing configuration of NMAR1 to MR.After routing configuration completes, NMAR1 sends routing configuration to this MR and confirms ACK message.

(6) MR is after the routing configuration receiving NMAR1 confirms, can call local routing configuration module, to configure by the route of MR to NMAR1.So far, MR just completes the access registration service on NMAR1.Upper-layer service application just can carry out routing forwarding by NMAR1.

(7) when MR moves to NMAR2 service area, MR have received again the broadcast of NMAR2.Now, MR also needs the idle NMAR list be added to by NMAR2 in MR, and sends MR registration message.

(8) NMAR2 carries out MR access authentication, is listed in by this MR after by certification and enlivens in MR list, and replys certification by confirming ACK message.

(9) after this, MR carries out NMAR selection, NMAR2 is classified as the NMAR list of current service, is withdrawn to transfer to by NMAR1 and enliven NMAR list from current service NMAR list, and periodically sends heartbeat message.

(10) MR sends routing configuration request to NMAR2, and NMAR2 implements MR-Prefix advertising of route and local routing configuration.MR, when receiving ACK and replying, carries out the routing configuration of MR to NMAR2 this locality.

(11) MR sends route withdraw request to NMAR1, and NMAR1 implements MR-Prefix route withdraw (the prefix routing iinformation by MR is cancelled), and the routing configuration of synchronized update this locality, and sends MR exit request on NMAR1.

(12) like this, the switching of Mobile IP subnet just completes, and data communication just can be transferred to and being forwarded by NMAR2.

5, main functional modules

The functional module of MR and NMAR is illustrated in fig. 4 shown below:

The functional block diagram of Fig. 4 MR and NMAR

(1) functional module of MR

In NMCP agreement, functional module main in MR comprises the following aspects:

NMAR radio receiver

For receiving periodic " the NMAR broadcast " of NMAR, after have received the broadcasting packet of NMAR, the NMAR list that can communicate with this MR will be set up.In the broadcasting packet of NMAR, the attribute Profile (NMAR) of this NMAR will be comprised.

The maintenance of NMAR list and selection

After establishing NMAR list, MR can carry out maintenance and the selection of NMAR list.In the maintenance of NMAR list, can safeguard respectively according to the different conditions of NMAR.Namely the selection of NMAR is selected one and is communicated for the NMAR for oneself serving in multiple accessible NMAR, wherein, the strategy of introducing can be adopted when carrying out the selection of many NMAR, such as can by the testing mechanism of signal strength signal intensity, NMAR loading condition etc. separately.In addition, this module is also responsible for safeguarding for the information in NMAR classification, such as, utilize expiration mechanism to carry out state-maintenance for each NMAR, when after the heartbeat message of NMAR that can not receive certain special services over a period to come, just this NMAR is put into Idle state, even delete.

MR MSG message sender

MR MSG message sender is mainly used for the incidence relation set up between MR and NMAR, by sending dissimilar message between MR and MSG, thus realize the mobile handoff of MR, the heartbeat message of MR, the state transitions of NMAR, routing configuration and cancel and the exiting of NMAR.This message sender is the key module realizing protocol schedule in NMCP.

Here, MSG message comprises following several types:

MSG 1:MR registration request.After MR receives the broadcast of NMAR, namely MR can be the registration request that NMAR accessible in NMAR list sends MR, and comprises the corresponding Profile of MR (MR).

MSG 2:MR heartbeat request.MR for being in the NMAR timed sending heartbeat message of active (alive) state and service (servicing) state, can be in active state for illustration of MR.

MSG 3: Route establishment request.After MR completes NMAR selection, namely MR sends Route establishment request to the NMAR of this selection, and this request is used to indicate NMAR to be needed to notice external advertising of route.

MSG 4: route withdraw request.After MR completes the switching of NMAR, namely MR sends route withdraw to previous NMAR and notices, and this request is used to indicate NMAR to be needed to cancel external advertising of route.

MSG 5:MR exits request.When MR completes whole communication process (the Mobile IP subnet at such as MR place has completed this stroke), MR can send to AP the request of exiting.

MR local routing is set up, is cancelled and configure

After the selection switchover policy implementing NMAR, MR can call local routing and set up, cancels module, realizes the foundation of MR to NMAR route and cancels layoutprocedure.

(2) main functional modules of NMAR

In addition, main in NMAR functional module comprises the following aspects:

NMAR broadcast transmission module

For periodically sending " MMAR broadcasting packet ".In the broadcasting packet of this NMAR, the attribute Profile (NMAR) of this NMAR will be comprised, as the IPv4/IPv6 address of the current state of NMAR, the identifier of NMAR and descriptor, NMAR, the type of NMAR, the timestamp information of NMAR and heartbeat message interval time etc.;

MR MSG message receiver

MR MSG message receiver is corresponding with MR MSG message sender, need come to process accordingly according to the different messages type of MSG.

The maintenance of MR list

After the related news receiving MR MSG, can set up in NMAR and safeguard the list of MR, in this list, containing the correlation attribute information of MR, the state information etc. of the cipher mode of the identifier of such as MR, the IP address of MR, MR and key, MR; In addition, expiration mechanism also can be utilized to carry out state Dynamic Maintenance for each MR, when after the heartbeat message that can not receive specific MR over a period to come, just this NMAR is put into Idle state, even delete from list.

MR routing configuration module

If after the Route establishment receiving MR MSG and configuration related news, NMAR can call the routing configuration module of MR, the route prefix information of MR is noticed.

In actual applications, relate generally to two network elements in this method to need to increase corresponding function: MR and NMAR.Wherein, MR, for being positioned at the couple in router on rapid (as high ferro or aircraft), need develop corresponding functional module: the routing configuration management etc. comprising NMAR radio receiver, NMAR list maintenance and selection, MR MSG transmitter and this locality.NMAR to be then usually located in wireless access network in network elements such as (data service unit of routine 3G or 4G mobile network are as PDSN/GGSN or or part IP RAN), need expand the related function module increasing Mobile IP subnet: comprise NMAR broadcast transmission module, MRMSG receiver, routing configuration management and MR list maintenance etc.

The present invention has some key point following:

1, the MR Move Detection designed in MNCP agreement and NMAR discovery mechanism

This method realizes the Move Detection of MR self by the periodic broadcasting of NMAR.Compare traditional Mobile IP scheme, this NMAR discovery mechanism carries comparatively complete NMAR correlation attribute information, is conducive to safeguarding and carries out the selection of available NMAR, also providing good security guarantee simultaneously.

The timeout treatment mechanism of the MR/NMAR 2, designed in MNCP agreement

Present solution provides the timeout treatment mechanism of complete MR/NMAR.Different conditions for MR and NMAR provides accurately overtime control.Compared to existing scheme, new method can each state flow process of control MR and NMAR effectively, and be provided with multiple overtime control mechanism, for controlling the state transition process between idle queues, active queue and service queue, the control become more meticulous can be realized, be conducive to stability and the robustness of maintenance system, when change of network environment, adaptive adjustment can be made according to the different queue scheduling of the different situations such as wireless link to MR/NMAR, there is good adaptability.

The hand-off process technology of the NMAR 3, designed in MNCP agreement

Method proposes the NMAR handover mechanism of being initiated by MR, namely near MR accurate perception NMAR attribute information and current state basis on, the NMAR access point of latest services is selected according to the policy-flexible preset of user and network operator, and new route is issued on new NMAR, former NMAR cancels old route, thus achieves the switching at runtime between NMAR.This switching is for MR sets up the basis of Optimization route.

4, network enabled moves function definition and the modular design of MR equipment

The present invention is directed to the mobile handoff of Mobile IP subnet, devise the basic function module requirement of MR, these modules are all the specialized designs done for completing New function, mainly comprise that NMAR broadcasting packet receives, NMAR list maintenance and selection, MR MSG message send, Route establishment and the functional module such as to cancel.The user terminal internally converging access can be realized, Internet access service is provided; Externally be linked into IP bearer network by mobile access link, complete the functions such as registration, address notification, traffic forwarding, be perception and control Mobile IP subnet switch key equipment.

5, network enabled moves function definition and the modular design of NMAR equipment

The present invention is directed to the mobile handoff of Mobile IP subnet, devise the basic function module requirement of NMAR, these modules are all the specialized designs done for completing New function, mainly comprise the transmission of NMAR broadcasting packet, MR list maintenance, MR MSG message sink process and route foundation with the functional module such as to cancel.Realize the access control of Mobile IP subnet, the position of the notice of route prefix and Mobile IP subnet follows the tracks of, and Mobile IP subnet can be coordinated to implement the forwarding of route handoff and data traffic.NMAR be realize Mobile IP subnet authentication registration, implement dynamic routing foundation, customer traffic forwards and high speed routing switches key equipment.

One of ordinary skill in the art will appreciate that: all or part of step realizing said method embodiment can have been come by the hardware that program command is relevant, also can realize in the combination of software or software and hardware, such as, use application-specific integrated circuit (ASIC) (ASIC), all-purpose computer or other hardware equivalents to realize.The program that preceding method is corresponding can be stored in a computer read/write memory medium, and this program, when performing, performs the step comprising said method embodiment; And aforesaid storage medium comprises: ROM, RAM, magnetic disc or CD etc. various can be program code stored medium.

Those of ordinary skill in the field are to be understood that: the foregoing is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims

1. support that mobile model IP subnet accesses the method with management, it is characterized in that, comprising:

Mobile couple in router NMAR to self service area send broadcast, carry in this broadcast include self serve port IP address at interior NMAR attribute information;

After couple in router MR receives the broadcast coming from new NMAR, the NMAR attribute information extracted wherein is kept in the NMAR list of self, and send MR registration message to this NMAR, and carry in registration message and include self port IP address at interior MR attribute information;

After NMAR receives the route withdraw request of MR, implement the IP prefix route withdraw of this MR, and the configuration of synchronized update local routing, send to the MR sending route withdraw request and exit request;

Wherein, described method also comprises: NMAR is divided into following different queue by the NMAR list inside in described MR: serve NMAR, enliven NMAR and idle NMAR;

2. method according to claim 1, is characterized in that, described NMAR comprises to the process of the service area transmission broadcast of self: described NMAR timing sends broadcast to the service area of self.

3. method according to claim 1, it is characterized in that, described NMAR comprises to the process of the service area transmission broadcast of self: described MR broadcasts NMAR and triggers broadcast, and the service area to self after NMAR receives this triggering broadcast sends broadcast.

4. the method according to claim 1 or 3, is characterized in that, also comprises: broadcast transmission interval information in the broadcast that described NMAR sends.

5. method according to claim 1, it is characterized in that, also comprise in described NMAR attribute information: the working load of the identifier of NMAR current state, NMAR and descriptor, NMAR serve port IPv4/IPv6 address, the type of NMAR, the timestamp information of NMAR and heartbeat message interval time, NMAR.

6. method according to claim 1, is characterized in that, also comprises in described MR attribute information: identity information, the operation mode of MR, the current state of MR, the timestamp of MR after the identifier of MR, the IPv4/IPv6 address of MR, MR encryption.

7. method according to claim 1, it is characterized in that, described MR sends heartbeat message to the NMAR enlivened in NMAR queue and service NMAR queue further, if do not receive the feedback of NMAR in the given time, is then transferred in idle NMAR queue by the attribute information of this NMAR.

8. method according to claim 1, is characterized in that, in the MR list inside of described NMAR, MR is divided into following different queue: serve MR, enliven MR and idle MR;

9. mobile couple in router NMAR realizes the access of mobile model IP subnet and a method for management, it is characterized in that,

After NMAR receives the registration message of couple in router MR, the MR attribute information extracted wherein is kept in the MR list of self, and replys registration confirmation message to this MR;

Wherein, described method also comprises: in the MR list inside of described NMAR, MR is divided into following different queue: serve MR, enliven MR and idle MR;

10. method according to claim 9, is characterized in that, described NMAR comprises to the process of the service area transmission broadcast of self: described NMAR timing sends broadcast to the service area of self.

11. methods according to claim 9, it is characterized in that, described NMAR comprises to the process of the service area transmission broadcast of self: described MR broadcasts NMAR and triggers broadcast, and the service area to self after NMAR receives this triggering broadcast sends broadcast.

12. methods according to claim 9 or 11, is characterized in that, also comprise: broadcast transmission interval information in the broadcast that described NMAR sends.

13. methods according to claim 9, it is characterized in that, also comprise in described NMAR attribute information: the working load of the identifier of NMAR current state, NMAR and descriptor, NMAR serve port IPv4/IPv6 address, the type of NMAR, the timestamp information of NMAR and heartbeat message interval time, NMAR.

14. 1 kinds of couple in router MR realize the access of mobile model IP subnet and the method for management, it is characterized in that,

After MR receives the broadcast coming from new mobile couple in router NMAR, the NMAR attribute information extracted wherein is kept in the NMAR list of self, and send MR registration message to this NMAR, and carry in registration message and include self port IP address at interior MR attribute information;

15. methods according to claim 14, is characterized in that, also comprise in described MR attribute information: identity information, the operation mode of MR, the current state of MR, the timestamp of MR after the identifier of MR, the IPv4/IPv6 address of MR, MR encryption.

16. methods according to claim 14, it is characterized in that, described MR sends heartbeat message to the NMAR enlivened in NMAR queue and service NMAR queue further, if do not receive the feedback of NMAR in the given time, is then transferred in idle NMAR queue by the attribute information of this NMAR.

17. 1 kinds of accesses of the support mobile model IP subnet based on method described in claim 1-8 any one and the system of management, is characterized in that, comprising:

Mobile couple in router NMAR, for self service area send broadcast, carry in this broadcast include self serve port IP address at interior NMAR attribute information; After receiving the registration message of MR, the MR attribute information extracted wherein is kept in the MR list of self, and replys registration confirmation message to this MR; After the routing configuration request receiving MR, by the IP prefix advertisement of this MR in IP bearer network, and complete the routing configuration of this NMAR to this MR, send routing configuration acknowledge message to this MR; After the route withdraw request receiving MR, implement the IP prefix route withdraw of this MR, and the configuration of synchronized update local routing, send to the MR sending route withdraw request and exit request;

Couple in router MR, for receive come from new NMAR broadcast after, extract NMAR attribute information to be wherein kept in the NMAR list of self, and send MR registration message to this NMAR, and carry in registration message and include self port IP address at interior MR attribute information; If the NMAR of current service can not continue to provide service again, then MR inquires about current NMAR list, selects the NMAR that new, and sends routing configuration request to this new NMAR; After receiving the routing configuration acknowledge message of NMAR, the route of configuration MR to NMAR, and send route withdraw request to the NMAR of former service; NMAR is divided into following different queue by the NMAR list inside in described MR: serve NMAR, enliven NMAR and idle NMAR; After receiving the broadcast coming from new NMAR, the attribute information of this NMAR is kept in the idle NMAR queue of NMAR list; When after the registration confirmation message receiving NMAR, that the attribute information of this NMAR is transferred to NMAR list enlivens in NMAR queue; In the current NMAR list of inquiry, after selecting a new NMAR, current NMAR list is inquired about enlivening in NMAR queue of NMAR list, after selecting a new NMAR, the attribute information of this new NMAR is transferred in service NMAR queue, the attribute information of former service NMAR is transferred to from service NMAR queue and enlivens NMAR queue.

18. systems according to claim 17, is characterized in that, also comprise:

19. 1 kinds realize the access of mobile model IP subnet and the mobile couple in router NMAR of management, it is characterized in that, comprising:

MR MSG message receiver, for after the registration message receiving couple in router MR, the MR attribute information extracted wherein is sent to MR list maintenance module and is kept in MR list, and replys registration confirmation message to this MR; After the routing configuration request receiving MR, indicate MR routing configuration module by the IP prefix advertisement of this MR in IP bearer network, and complete the routing configuration of this NMAR to this MR, MR MSG message receiver sends routing configuration acknowledge message to this MR; MR MSG message receiver, after the route withdraw request receiving MR, implements the IP prefix route withdraw of this MR, and indicates MR routing configuration module synchronization to upgrade local routing configuration, sends exit request to the MR sending route withdraw request;

MR routing configuration module, for the instruction according to MR MSG message receiver, performs the operation of corresponding routing configuration;

Wherein, MR is also divided into following different queue for the MR list inside at described NMAR by described MR list maintenance module: serve MR, enliven MR and idle MR; After NMAR receives the registration request of MR, the attribute information of this MR is saved in and enlivens in MR queue; After NMAR receives the routing configuration request of MR, the attribute information of this MR is transferred in service MR queue; If do not receive the heartbeat message of MR in the scheduled time, then the attribute information of this MR is transferred in idle MR queue.

20. NMAR according to claim 19, is characterized in that, described NMAR broadcast transmission module comprises to the process of the service area transmission broadcast of self: described NMAR timing sends broadcast to the service area of self.

21. NMAR according to claim 19, it is characterized in that, described NMAR broadcast transmission module comprises to the process of the service area transmission broadcast of self: described MR broadcasts NMAR and triggers broadcast, and the service area to self after NMAR receives this triggering broadcast sends broadcast.

22. NMAR according to claim 19 or 21, is characterized in that, also comprise: broadcast transmission interval information in the broadcast that described NMAR broadcast transmission module sends.

23. NMAR according to claim 19, it is characterized in that, also comprise in described NMAR attribute information: the working load of the identifier of NMAR current state, NMAR and descriptor, NMAR serve port IPv4/IPv6 address, the type of NMAR, the timestamp information of NMAR and heartbeat message interval time, NMAR.

24. 1 kinds realize the access of mobile model IP subnet and the couple in router MR of management, it is characterized in that, comprising:

NMAR radio receiver, for receiving the broadcast coming from new mobile couple in router NMAR, the NMAR attribute information extracted wherein is kept in NMAR list;

Local routing configuration module, for performing concrete routing configuration operation;

Wherein, NMAR is divided into following different queue by described NMAR list inside: serve NMAR, enliven NMAR and idle NMAR;

25. MR according to claim 24, is characterized in that, also comprise in described MR attribute information: identity information, the operation mode of MR, the current state of MR, the timestamp of MR after the identifier of MR, the IPv4/IPv6 address of MR, MR encryption.

26. MR according to claim 24, it is characterized in that, described MR MSG transmitter sends heartbeat message to the NMAR enlivened in NMAR queue and service NMAR queue further, if do not receive the feedback of NMAR in the given time, then the attribute information of this NMAR is transferred in idle NMAR queue.