CN1972319A - An acquisition method for configuration mode of care-of address - Google Patents

Abstract

This invention discloses one transfer address align method, which comprises the following steps: in IPv6 WiMAX network, setting address align type on each provider servo; user terminal outside network requires the transfer type to current network provider; the said AAA servo responds user terminal require and sends address align type to user terminal; user terminal uses the received address set type as outer net transfer address type. This invention also provides other address transfer type get method.

Description

The acquisition methods of care-of address configuration mode

Technical field

The present invention relates in the WiMAX network system, use the technical field of mobile IP v 6, especially relate to a kind of acquisition methods of care-of address configuration mode.

Background technology

Although with Internet Protocol the 4th edition (IPv4, IP version 4) for the Internet communications technologies of core technology has obtained great success, yet because the nervous problem of IPv4 address resource and directly limited further developing that the IP technology is used.Because the develop rapidly of mobile communication technology and broadband technology causes the demand sharp increase to the IP address at present, in order to solve the nervous problem of IP address resource, the also corresponding inter-domain routing (CIDR that has proposed as no class of prior art, Classless Inter Domain Routing), network address translation (NAT, Network Address Translation), technology such as combined address, but the nervous problem that these technology to a certain extent can only respite IPv4 address resource.

For these reasons, Internet engineering duty group (IETF, Internet Engineering Task Force) has proposed Next Generation Internet agreement-IPv6 in the nineties in 20th century, and IPv6 has been acknowledged as the following upgraded version of IPv4 at present.Wherein the most essential improvement of IPv6 technology is exactly that original IPv4 address size has been increased to 128 by 32, thereby has brought almost unlimited address space.In addition, the IPv6 technology has also adopted the hierarchical address pattern, IP packet header, service quality, host address dispose automatically and authenticate and many technology such as encryption efficiently.

Wherein, in order to realize that mobile node still can successfully communicate with the external world under mobile status, existing mobile IP technology (the MIP that adopted, Mobile IP), its basic functional principle is that mobile node (is home address HoA except having a fixed IP addresses, Home Address) outside, and also will to have the interim IP address of another one in the field network that moves to recently (be transfer address CoA, Care-ofAddress), set up corresponding relation between HoA address and the CoA address by network configuration mechanism then, and the routing relation between home network and the field network, thereby reach when making the network of mobile node that change take place at its place, can with the Correspondent Node that is arranged in other networks (CN, CorrespondingNode) the unbroken purpose of the communication between.And mobile IP protocol version 6 (MIPv6, Mobile IPversion 6) is based on the mobile IP technology of IPv6 agreement, its implementation procedure need not outer agency, support routing optimality (Route Optimization) to handle and then avoided the alternate route problem, and made full use of neighbours' discovery feature and IPv6 extension header, so the travelling performance of MIPv6 has had sizable improvement with respect to the travelling performance of MIPv4.

Following is the concise and to the point course of work of MIPv6:

1) mobile node is determined current position according to the discovery message that the IPv6 router sends;

2) mobile node uses the CoA address that the automatic configuration mechanism in IPv6 address (perhaps other mechanism) is obtained the field network link configuration;

3) mobile node lands local agent, and notifies its CoA address to local agent;

4) mobile node also will be notified its CoA address to some CN;

5) do not know that the communication host of mobile node CoA address can ignore the CoA address of mobile node, and the moving IPv4 of image drift is the same, packet is mail to the local network of mobile node, by local agent by the tunnel with packet and then be forwarded to the CoA address of mobile node;

6) communication host of knowing mobile node CoA address can use IPv6 route extension header sign directly packet to issue mobile node.

7) mobile node uses the CoA address as the source address that sends packet when other CN send data.

According to aforementioned content, can effectively utilize the CoA address for making the mobile node that is arranged in field network have one, just must make mobile node obtain the configuration information of its CoA address and CoA address thereof by some configuration mode.Wherein in existing configuration mode, manual configuration (Manual Configuration) host IP address is a not only time-consuming but also dull thing; And static ip address difficult task especially of management assign host machine, especially when host IP address need be done regular change.In IPv4, also can pass through DHCP (DHCP, Dynamic Host Configuration Protocol) processing procedure and carry out the automatic setting of IP address relevant information.A Dynamic Host Configuration Protocol server has an IP address pool, when main frame obtains its IP address from Dynamic Host Configuration Protocol server, obtain the configuration information (as default gateway, domain name server (DNS) and the tabulation of NTP (Network Time Protocol) ntp server etc.) of its IP address, reach the purpose of obtaining the host IP address relevant information thus.

IPv6 has inherited the automatic configuration service of above-mentioned IP v4, and the automatic configuration mechanism of the state that has been referred to as (Stateful Autoconfiguration), except the automatic configuration mechanism of state was arranged, IPv6 had also adopted a kind of mechanism that stateless disposes (Stateless Auto-configuration) automatically that is called as.Wherein in the automatic configuration mechanism of stateless, main frame at first by its interface identifier (main frame can calculate the interface identifier of self by the MAC Address to self) being attached to after the link local address, has just produced address, link this locality (link-local).Main frame carries out the address conflict detection for this link-local address then, to verify the uniqueness of this address, if detecting the back, address conflict confirms that set link-local address is unique, (the router message of can after the request of sending of other nodes of response, making an announcement sent at router of main frame then, the message of perhaps periodically making an announcement) add that the interface identifier of oneself obtains global address in the link prefix that comprises in the announcement message, the configuration information that comprises in the announcement message of sending according to router again, after obtaining the configuration information of the global address that has generated, just can realize with the internet in other main frame communicated.

Wherein in the IPv6 agreement, it is complementary the use that automatic configuration mechanism of state and the automatic configuration mechanism of stateless are arranged, as can utilizing the automatic configuration mechanism of stateless to obtain the CoA address of main frame, and by there being the automatic configuration mechanism of state to obtain the relevant configuration information of host C oA address.

World Interoperability for Microwave Access, WiMax (WiMAX, World Interoperability for MicrowaveAccess) be an emerging wireless communication technology, can provide towards the high speed of the Internet and connect, as shown in Figure 1, this figure is the concrete composition structural representation of existing WiMAX network system, and wherein the WiMAX network system mainly comprises:

User terminal (SS, Subscriber Station)/mobile subscriber terminal (MSS, Mobile SubscriberStation): the user uses this terminal equipment to be linked in the WiMAX network.

Accessing business network (ASN, Access Service Network): gather for the WiMAX terminal provides the network function of wireless access service, wherein ASN has specifically comprised base station BS and two network elements of accessing business network gate ASN-GW; Wherein the major function of BS network element is: provide the L2 (two layers) of BS and MSS to be connected, function such as RRM; The major function of ASN-GW network element is: for the MSS authentication provides client functionality, provide in relaying (Relay) function (as IP address assignment), ASN of L3 (three layers) information handoff functionality etc. for MSS.

Connect service network (CSN, Connect Service Network): for the WiMAX terminal provides IP Connection Service, the major function that CSN provided is: the IP address assignment of MSS, Internet access, AAAproxy or server and based on user's functions such as authorization control.

Form between the logic entity for three in the above-mentioned WiMAX network system and communicate (annotating :) owing to the function that each network element in the WiMAX network system is related is more, above only to having carried out simple elaboration with following technical solution of the present invention function associated by the interface from R1 to R6.

Have at present propose to propose the mobile IP v 6 technology is applied in the WiMAX network system, to reach when MSS is arranged in field network, guarantee its with CN between communicate by letter and keep unbroken purpose.Please refer to Fig. 2, this figure is a processing procedure schematic diagram of using the mobile IP v 6 technology in the existing WiMAX network system, the dotted line processing section expresses possibility among the figure needs special processing, but its processing method does not relate to the related content that following technical solution of the present invention is set forth, and does not therefore elaborate here.Wherein an indispensable step is the step that MSS obtains self CoA address in this processing procedure, yet there is multiple address configuration mechanism at present, as above-mentioned automatic configuration mechanism of state and the automatic configuration mechanism of stateless arranged, therefore CoA address how to notify MSS to use which kind of address configuration mechanism accurately to obtain self is to have used in the WiMAX network system of mobile IP v 6 technology a major issue to be solved is arranged.

Summary of the invention

The technical problem to be solved in the present invention is to propose a kind of acquisition methods of care-of address configuration mode, and with in having used the WiMAX network system of mobile IP v 6, user terminal can accurately get access to corresponding CoA address configuration mode.

For addressing the above problem, the technical scheme that the present invention proposes is as follows:

A kind of acquisition methods of care-of address configuration mode comprises step:

A, in WiMAX network system based on mobile IP v 6, the address configuration mode is set in the aaa server that each network provider provides;

B, be in the aaa server request care-of address configuration mode that the user terminal in the field network provides to current network provider of living in;

The request that C, described aaa server response user terminal are sent is handed down to user terminal with the address configuration mode;

D, user terminal with the address configuration mode that receives as the care-of address configuration mode in the field network of place.

Preferably, network provider is set in the described steps A respectively and controls user terminal corresponding address configuration mode in each network in the aaa server that each network provider provides;

Aaa server is according to sending the current network information of living in of requesting users terminal among the described step C, will be handed down to user terminal to the address configuration mode of user terminal in should network.

Preferably, setting in advance a group network service provider in the described steps A in the aaa server that each network provider provides controls the address configuration mode that user terminal is all supported in each network and gathers;

Aaa server selects a kind of address configuration mode to be handed down to user terminal in the address configuration mode that sets in advance is gathered among the described step C.

Preferably, the current network provider of living in of user terminal is the home network service provider, and described aaa server is the ownership aaa server of user terminal.

Preferably, user terminal is when beginning to carry out the access authentication processing among the described step B, send Access-Request message by the accessing business network gate in the current field network of living in to the ownership aaa server, realize to ownership aaa server request care-of address configuration mode.

Preferably, described step C specifically comprises step:

C1, described ownership aaa server carry out the address configuration mode being carried on the accessing business network gate that is handed down in the Access-Accept message in the current field network of living in of user terminal after authentication passes through to user terminal;

C2, described accessing business network gate are handed down to user terminal with the address configuration mode of carrying in the Access-Accept message that receives.

Preferably, described step C specifically comprises step:

C1, described ownership aaa server carry out the address configuration mode being carried on the accessing business network gate that is handed down in the Access-Accept message in the current field network of living in of user terminal after authentication passes through to user terminal;

C2, described accessing business network gate carry out buffer memory with the address configuration mode of carrying in the Access-Accept message that receives;

C3, the user terminal accessing business network gate request care-of address configuration mode in current field network of living in;

The request that c4, described accessing business network gate response user terminal is sent is handed down to user terminal with the address configuration mode of buffer memory.

Preferably, user terminal passes through the accessing business network gate request care-of address configuration mode of DHCPv6 Information Request message in current field network of living among the described step c3;

Accessing business network gate is carried in the DHCPv6 Reply message by the address configuration mode with buffer memory and is handed down to user terminal among the described step c4.

Preferably, the current network provider of living in of user terminal is the non-attribution network provider, and described aaa server is the visit aaa server of user terminal in the current network service provider.

Preferably, described step B specifically comprises step:

B1, user terminal send Access-Request message by the accessing business network gate in the current field network of living in to the visit aaa server when beginning to carry out the access authentication processing, realize to visit aaa server request care-of address configuration mode;

B2, described visit aaa server give the ownership aaa server of user terminal with the Access-Request forwards that receives, and the ownership aaa server of request user terminal carries out authentication process to user terminal.

Preferably, described step C specifically comprises step:

C_1, described ownership aaa server carry out after authentication passes through user terminal, to the visit aaa server feedback Access-Accept of user terminal message;

C_2, described visit aaa server are carried on the address configuration mode accessing business network gate that is handed down in the Access-Accept message that receives in the current field network of living in of user terminal;

C_3, described accessing business network gate are handed down to user terminal with the address configuration mode of carrying in the Access-Accept message that receives.

Preferably, described step C specifically comprises step:

C_1, described ownership aaa server carry out after authentication passes through user terminal, to the visit aaa server feedback Access-Accept of user terminal message;

C_2, described visit aaa server are carried on the address configuration mode accessing business network gate that is handed down in the Access-Accept message that receives in the current field network of living in of user terminal;

C_3, described accessing business network gate carry out buffer memory with the address configuration mode of carrying in the Access-Accept message that receives;

C_4, the user terminal accessing business network gate request care-of address configuration mode in current field network of living in;

The request that c_5, described accessing business network gate response user terminal is sent is handed down to user terminal with the address configuration mode of buffer memory.

Preferably, user terminal passes through the accessing business network gate request care-of address configuration mode of DHCPv6 Information Request message in current field network of living among the described step c_4;

Accessing business network gate is carried in the DHCPv6 Reply message by the address configuration mode with buffer memory and is handed down to user terminal among the described step c_5.

Preferably, described address configuration mode includes state auto configuration mode, stateless auto configuration mode, state is arranged/stateless mixing auto configuration mode and manual configuration mode.

A kind of acquisition methods of care-of address configuration mode comprises step:

(1) in based on each router in the WiMAX network system of mobile IP v 6, the address configuration mode is set;

(2) the router solicitation care-of address configuration mode of user terminal in current field network of living in;

(3) router in the current field network of living in of the user terminal response user terminal request of sending is handed down to user terminal with the address configuration mode of described setting;

(4) user terminal with the address configuration mode that receives as the care-of address configuration mode in the field network of place.

Preferably, user terminal passes through the router solicitation care-of address configuration mode of Router Solicitation message in current field network of living in the described step (2);

Router in the described step (3) in the field network is carried in the Router Advertisement message by the address configuration mode with described setting and is handed down to user terminal.

Preferably, described address configuration mode includes state auto configuration mode, stateless auto configuration mode, state is arranged/stateless mixing auto configuration mode and manual configuration mode.

The beneficial effect that the present invention can reach is as follows:

First kind of scheme of the present invention is by in the WiMAX network system based on MIPv6, the address configuration mode of the user terminal in the network of administering is set in the aaa server that each network provider provides, the aaa server request CoA address configuration mode that user terminal provides to current network provider of living in, the request that aaa server response user terminal is sent, the corresponding address configuration mode is handed down to user terminal, user terminal with the address configuration mode that receives as the CoA address configuration mode in the field network of place, thereby realized that in the WiMAX of applying MIP v6 network system user terminal can accurately get access to the purpose of corresponding CoA address configuration mode.

Second kind of scheme of the present invention is by being provided with the address configuration mode in its place network in based on each router in the WiMAX network system of MIPv6, the router solicitation CoA address configuration mode of user terminal in current field network of living in, the request that router response user terminal in the current field network of living in of user terminal is sent, set address configuration mode is handed down to user terminal, user terminal with the address configuration mode that receives as the CoA address configuration mode in the field network of place, thereby realized also that in the WiMAX of applying MIP v6 network system user terminal can accurately get access to the purpose of corresponding CoA address configuration mode.

Description of drawings

Fig. 1 is the concrete composition structural representation of existing WiMAX network system;

Fig. 2 is for using the processing procedure schematic diagram of mobile IP v 6 technology in the existing WiMAX network system;

Fig. 3 is the main realization principle flow chart of the acquisition methods of CoA address configuration mode of the present invention;

The first embodiment processing procedure schematic diagram that Fig. 4 implements for the acquisition methods principle of first kind of CoA address configuration mode of proposition according to the present invention;

The second embodiment processing procedure schematic diagram that Fig. 5 implements for the acquisition methods principle of first kind of CoA address configuration mode of proposition according to the present invention;

Fig. 6 is the main realization principle flow chart of the acquisition methods of the another kind of CoA address configuration mode of the present invention's proposition;

The embodiment processing procedure schematic diagram that Fig. 7 implements for the acquisition methods principle of second kind of CoA address configuration mode of proposition according to the present invention.

Embodiment

At present in the WiMAX network system, when realizing in user terminal is stayed out township's network, its still can keep with CN between communicate by letter and do not interrupt, therefore adopted the MIPv6 technology in the WiMAX network system, the present invention program is primarily aimed in existing WiMAX NWG Stage2 baseline documents and does not provide the approach that obtains CoA address configuration mode in the WiMAX network system that how to allow user terminal use MIPv6, and provided in the WiMAX of applying MIP v6 network system user terminal obtains its CoA address configuration mode information in moving process method, utilize the given method of the present invention program, can realize that user terminal obtains the information of its CoA address configuration mode, and then carry out the CoA address configuration according to specified configuration mode in the CoA address configuration mode information that is obtained, for follow-up mobile IP processing procedure has been created precondition.

Wherein, in the WiMAX network system of applying MIP v6 technology, when realizing that user terminal is stayed out in township's network still can with CN between communicate by letter and keep unbroken purpose, one step of its key is exactly that user terminal obtains its CoA address in field network, here can be user terminal configuration CoA address by different address configuration modes, the address configuration mode that for example can select has: state auto configuration mode Stateful Auto-Configuration is arranged, stateless auto configuration mode StatelessAuto-Configuration, there is state/stateless to mix auto configuration mode Hybrid Stateful/StatelessAuto-Configuration (promptly utilize Stateless Auto-Configuration mode to be user terminal configuration CoA address, utilize Stateful Auto-Configuration mode to be user terminal configuration CoA configuration information) and manual configuration mode (Manual) etc.

Be explained in detail below in conjunction with the main realization principle and the embodiment thereof of each accompanying drawing the present invention program.

Please refer to Fig. 3, this figure is the main realization principle flow chart of the acquisition methods of CoA address configuration mode of the present invention, and its main implementation procedure is as follows:

Step S10, in WiMAX network system based on MIPv6, in the aaa server (AAA Server) that each network provider (NSP, Network Service Provider) provides, the address configuration mode that it controls user terminal in each network is set; Wherein in the AAAServer that each NSP provides can but be not limited to the address configuration mode that it controls user terminal in each network is set by following dual mode:

1) respectively at each NSP, the address configuration mode of user terminal in each network that in the AAA Server that this NSP provides, respectively this NSP is set and is controlled;

2) setting in advance the address configuration mode that user terminal is all supported in one group of its each network of controlling in the AAA Server that each NSP provides gathers.

Step S20 is in the aaa server request care-of address configuration mode that the user terminal (following is that example describes with MSS) in the field network provides to current NSP of living in;

Step S30, the request that the aaa server response MSS among the current NSP of living in of MSS sends is handed down to MSS with the corresponding address configuration mode;

If among the above-mentioned steps S10 in the AAA Server that each NSP provides pass-through mode 1) the address configuration mode is set, then the aaa server among the current NSP of living in of MSS will be according to the current network information of living in of the MSS of the request of sending in step S30 here, will be handed down to MSS to the address configuration mode of user terminal in should network;

If among the above-mentioned steps S10 in the AAA Server that each NSP provides pass-through mode 2) the address configuration mode is set, select a kind of address configuration mode during then the address configuration mode that the aaa server among the current NSP of living in of MSS is directly setting in advance in step S30 is gathered here and be handed down to MSS.

Step S40, MSS with the address configuration mode that receives as the CoA address configuration mode in the field network of place.

Wherein in above-mentioned processing procedure, when if the current NSP of living in of MSS is ownership NSP (MSS is in non-roaming state), then the AAA Server among ownership of living in NSP this moment is the ownership AAAServer (H-AAA of MSS, Home AAA Server), this moment MSS that the first concrete processing procedure of CoA address configuration mode of current field network of living in is provided in the H-AAA that provides of ownership NSP is as follows:

MSS is when beginning to carry out the access authentication processing, send Access-Request message by the accessing business network gate (ASN-GW) in the current field network of living in to H-AAA, with request H-AAA it is carried out access authentication and handle, realize simultaneously to H-AAA request CoA address configuration mode;

H-AAA carries out the corresponding address configuration mode being carried on the ASN-GW that is handed down in the Access-Accept message in the current field network of living in of MSS after authentication passes through to MSS;

ASN-GW is handed down to MSS with the address configuration mode of carrying in the Access-Accept message that receives, thereby realizes making the CoA address configuration mode that gets access to current field network of living among the H-AAA of MSS in ownership NSP.

In addition based on above-mentioned, the second concrete processing procedure of CoA address configuration mode of obtaining current field network of living among the H-AAA that MSS provides to ownership NSP is as follows:

MSS is when beginning to carry out the access authentication processing, send Access-Request message by the accessing business network gate (ASN-GW) in the current field network of living in to H-AAA, with request H-AAA it is carried out access authentication and handle, realize simultaneously to H-AAA request CoA address configuration mode;

H-AAA carries out the corresponding address configuration mode being carried on the ASN-GW that is handed down in the Access-Accept message in the current field network of living in of user terminal after authentication passes through to MSS;

ASN-GW carries out buffer memory with the address configuration mode of carrying in the Access-Aceept message that receives;

The ASN-GW request CoA address configuration mode of follow-up MSS in current field network of living in, wherein MSS can send the purpose that DHCPv6Information Request message realizes the ASN-GW request CoA address configuration mode in current field network of living in by the ASN-GW in current field network of living in;

The request that ASN-GW response MSS sends, the address configuration mode of buffer memory is handed down to MSS, wherein ASN-GW can be carried on by the address configuration mode with buffer memory in the DHCPv6 Reply message and be handed down to MSS, thereby realizes making the CoA address configuration mode that gets access to current field network of living among the H-AAA of MSS in ownership NSP.

When if the current NSP of living in of MSS is non-attribution NSP (MSS is in roaming state), then the AAA Server among the NSP of living in this moment is the visit AAA Server (V-AAA of MSS in current NSP of living in, Visit AAA Server), it is as follows to obtain the first concrete processing procedure of CoA address configuration mode of current field network of living among the V-AAA that this moment, MSS provided to current NSP of living in:

MSS sends Access-Request message by the ASN-GW in the current field network of living in to V-AAA when beginning to carry out the access authentication processing, to realize to V-AAA request CoA address configuration mode;

V-AAA and then give the H-AAA of MSS with the Access-Request forwards that receives carries out authentication process with the H-AAA of request MSS to MSS;

H-AAA carries out after authentication passes through MSS, to the V-AAA of MSS feedback Access-Aceept message;

V-AAA is carried on the corresponding address configuration mode ASN-GW that is handed down in the Access-Accept message that receives in the current field network of living in of MSS after receiving the Access-Accept message that H-AAA sends;

ASN-GW is handed down to MSS with the address configuration mode of carrying in the Access-Accept message that receives, thereby realizes making the CoA address configuration mode that gets access to current field network of living among the V-AAA of MSS in the present located NSP.

In addition based on above-mentioned, the second concrete processing procedure of CoA address configuration mode of obtaining current field network of living among the V-AAA that MSS provides to current NSP of living in is as follows:

MSS sends Access-Request message by the ASN-GW in the current field network of living in to V-AAA when beginning to carry out the access authentication processing, to realize to V-AAA request CoA address configuration mode;

V-AAA and then give the H-AAA of MSS with the Access-Request forwards that receives carries out authentication process with the H-AAA of request MSS to MSS;

H-AAA carries out after authentication passes through MSS, to the V-AAA of MSS feedback Access-Accept message;

V-AAA is carried on the corresponding address configuration mode ASN-GW that is handed down in the Access-Accept message that receives in the current field network of living in of MSS after receiving the Access-Aceept message that H-AAA sends;

ASN-GW carries out buffer memory with the address configuration mode of carrying in the Access-Accept message that receives;

The ASN-GW request CoA address configuration mode of follow-up MSS in current field network of living in, wherein MSS can send the purpose that DHCPv6Information Request message realizes the ASN-GW request CoA address configuration mode in current field network of living in by the ASN-GW in current field network of living in;

The request that ASN-GW response MSS sends, the address configuration mode of buffer memory is handed down to MSS, wherein ASN-GW can be carried on by the address configuration mode with buffer memory in the DHCPv6 Reply message and be handed down to MSS, thereby realizes making the CoA address configuration mode that gets access to current field network of living among the V-AAA of MSS in the present located NSP.

To enumerate two specific embodiments so that such scheme principle of the present invention is explained in detail according to foregoing invention scheme principle below, will use special parameter CoA_CM (CoAConfiguration Method) to represent CoA address configuration mode in the following embodiments:

Please refer to Fig. 4, this figure is the acquisition methods principle of first kind of CoA address configuration mode proposing according to the present invention and the first embodiment processing procedure schematic diagram implemented, and its concrete processing procedure is as follows:

1.～3.: H-AAA/V-AAA receives by the ASN-GW in the field network of MSS place and transmits the Access-Request message of coming, MSS is carried out authentication be its distribution such as HoA, home link prefix (HL by the back, Home Link Prefix), information (these information being designated as other options here) such as home agent (HA, Home Agent) address; Be that MSS selects a kind of CoA address configuration mode and is written to CoA_CM simultaneously according to address configuration mode in the field network of MSS place or the address configuration mode that configured.

Annotate: when the field network at MSS place belongs to the ownership NSP of MSS (MSS is in non-roaming state), then the Access-Request message of above-mentioned steps in 2. directly sends to H-AAA (the H-AAA this moment address configuration mode information in the field network of MSS place as can be known is so be MSS distribution CoA_CM by it);

When the field network at MSS place does not belong to the ownership NSP of MSS (MSS is in roaming state), then the V-AAA of the Access-Request message of above-mentioned steps in 2. by the NSP at the present place of MSS is transmitted to H-AAA (the V-AAA this moment address configuration mode information in the field network of MSS place as can be known is so be MSS distribution CoA_CM by it).

4.～5.: H-AAA/V-AAA is carried on the ASN-GW that is handed down in the Access-Accept message in the field network of MSS place with other options and CoA_CM, and ASN-GW is stored the otheroptions that receives.

6.: ASN-GW in the field network of MSS place and then the forwards that will comprise CoA_CM are given MSS, after MSS finishes access authentication, just can know CoA address configuration mode in its place field network according to the CoA_CM information that comprises in the message that receives.

Please refer to Fig. 5, this figure is the acquisition methods principle of first kind of CoA address configuration mode proposing according to the present invention and the second embodiment processing procedure schematic diagram implemented, and its concrete processing procedure is as follows:

1.～3.: after H-AAA/V-AAA receives the Access-Request message of transmit by the ASN-GW in the field network of MSS place, MSS is carried out authentication be its distribution such as information (these information being designated as other options here) such as HoA, HL, HA address by the back; Be that MSS selects a kind of CoA address configuration mode and is written to CoA_CM simultaneously according to address configuration mode in the field network of MSS place or the address configuration mode that configured.

Annotate: when the field network at MSS place belongs to the ownership NSP of MSS (MSS is in non-roaming state), then the Access-Request message of above-mentioned steps in 2. directly sends to H-AAA (the H-AAA this moment address configuration mode information in the field network of MSS place as can be known is so be MSS distribution CoA_CM by it);

When the field network at MSS place does not belong to the ownership NSP of MSS (MSS is in roaming state), then the V-AAA of the Access-Request message of above-mentioned steps in 2. by the NSP at the present place of MSS is transmitted to H-AAA (the V-AAA this moment address configuration mode information in the field network of MSS place as can be known is so be MSS distribution CoA_CM by it).

4.～5.: H-AA/V-AAA is carried on the ASN-GW that is handed down in the Access-Aceept message in the field network of MSS place with other options and CoA_CM, and ASN-GW is with the otheroptions that receives and CoA_CM buffer memory in addition.

6.～8.: MSS finishes the access authentication processing procedure, supposes that the link local address (link-local address) of MSS in current field network of living in constitutes in the following way:

Link-local address=FE::80+interface identifier of MSS

Wherein FE::80 is the known local prefix of link; Interface Identifier is the MSS interface identifier of 64bits length, can calculate based on the EUI-64 algorithm, for example the EUI-64 computing can be carried out in the 48 bit mac addresses of MSS and draws 64 interface identifier of MSS.

And DAD is carried out in the above-mentioned link-local address that obtains detect, if detecting discovery link-local address by DAD does not clash with any address, can confirm that then on the above-mentioned link-local of link-local address in current network that obtains be unique, can use.

9. MSS utilizes the ASN-GW of the above-mentioned link-local address that obtains in its place field network to send DHCPv6 Information Request message, issues the CoA_CM information of its buffer memory with request ASN-GW.

10. the ASN-GW in the field network of MSS place is that MSS issues DHCPv6 Reply message, comprise other options and CoA_CM information in this message, this moment, MSS was after receiving DHCPv6Reply message, just can know CoA address configuration mode in its place field network by obtaining wherein CoA_CM information.

Please refer to Fig. 6, this figure is the main realization principle flow chart of the acquisition methods of the another kind of CoA address configuration mode that proposes of the present invention, and its main implementation procedure is as follows:

Step S100 is provided with the address configuration mode in based on each router in the WiMAX network system of mobile IP v 6;

Step S200, the router solicitation CoA address configuration mode of user terminal (following is that example describes with MSS) in current field network of living in, wherein MSS can send Router Solicitation message by the router in current field network of living in, realizes the router solicitation CoA address configuration mode in current field network of living in;

Step S300, the request that router response MSS in the current field network of living in of MSS sends, the address configuration mode that self is set is handed down to MSS, and wherein the router in the field network can be carried in the Router Advertisement message by the address configuration mode that self is set and be handed down to MSS;

Step S400, MSS with the address configuration mode that receives as the CoA address configuration mode in the field network of place.

To enumerate a specific embodiment so that such scheme principle of the present invention is explained in detail according to foregoing invention scheme principle below, will use special parameter CoA_CM (CoAConfiguration Method) to represent CoA address configuration mode in the following embodiments:

Please refer to Fig. 7, this figure is the acquisition methods principle of second kind of CoA address configuration mode proposing according to the present invention and the embodiment processing procedure schematic diagram implemented, and its concrete processing procedure is as follows:

1. after MSS entered field network, it finished the authentication process process by ASN-GW in this field network and H-AAA/V-AAA, and finished and register with ASN-GW and the foundation of data channel.

2. MSS finishes the access authentication processing procedure, supposes that the link local address (link-local address) of MSS in current field network of living in constitutes in the following way:

Link-local address=FE::80+interface identifier of MSS

Wherein FE::80 is the known local prefix of link; Interface Identifier is the MSS interface identifier of 64bits length, can calculate based on the EUI-64 algorithm, for example the EUI-64 computing can be carried out in the 48 bit mac addresses of MSS and draws 64 interface identifier of MSS.

And DAD is carried out in the above-mentioned link-local address that obtains detect, if detecting discovery link-local address by DAD does not clash with any address, can confirm that then on the above-mentioned link-local of link-local address in current network that obtains be unique, can use.

3. MSS obtains to be handed down to the relevant information (as relevant informations such as HoA, HLs, but wherein do not comprise CoA_CM information) of ASN-GW by H-AAA above-mentioned in 1..

4. MSS uses the router of above-mentioned link-local address in its place field network to send Router Solicitation message, issues the CoA address configuration mode of this field network with the router in the field network of request place.

5. the router in the field network of MSS place is that MSS issues Router Advertisement message, comprise CoA_CM information in this message, MSS just can be known CoA address configuration mode in its place field network according to the CoA_CM information that wherein comprises after receiving the Router Advertisement message that router issues.

As fully visible, the explanation that technical solution of the present invention is detailed in the WiMAX network system during applying MIP v6 technology, MSS obtains involved detailed realization flow of its CoA address configuration mode information and corresponding message in field network, according to the method that is proposed in the technical solution of the present invention, MSS can be known the address configuration mode of supporting in the current field network of living in, and utilize the address configuration mode get access to that the CoA address of oneself is configured, the several method that technical solution of the present invention proposed simultaneously can be adapted to various use-cases, has therefore established important basis for the practical mobile IP v 6 technology that realizes in the WiMAX network system.

Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.

Claims (17)

1, a kind of acquisition methods of care-of address configuration mode is characterized in that, comprises step:

A, in WiMAX network system based on mobile IP v 6, the address configuration mode is set in the aaa server that each network provider provides;

B, be in the aaa server request care-of address configuration mode that the user terminal in the field network provides to current network provider of living in;

The request that C, described aaa server response user terminal are sent is handed down to user terminal with the address configuration mode;

D, user terminal with the address configuration mode that receives as the care-of address configuration mode in the field network of place.

2, the method for claim 1 is characterized in that, network provider is set respectively in the aaa server that each network provider provides in the described steps A controls user terminal corresponding address configuration mode in each network;

Aaa server is according to sending the current network information of living in of requesting users terminal among the described step C, will be handed down to user terminal to the address configuration mode of user terminal in should network.

3, the method for claim 1, it is characterized in that, in the aaa server that each network provider provides, set in advance a group network service provider in the described steps A and control the address configuration mode that user terminal is all supported in each network and gather;

Aaa server selects a kind of address configuration mode to be handed down to user terminal in the address configuration mode that sets in advance is gathered among the described step C.

As claim 1,2 or 3 described methods, it is characterized in that 4, the current network provider of living in of user terminal is the home network service provider, described aaa server is the ownership aaa server of user terminal.

5, method as claimed in claim 4, it is characterized in that, user terminal is when beginning to carry out the access authentication processing among the described step B, send Access-Request message by the accessing business network gate in the current field network of living in to the ownership aaa server, realize to ownership aaa server request care-of address configuration mode.

6, method as claimed in claim 5 is characterized in that, described step C specifically comprises step:

C1, described ownership aaa server carry out the address configuration mode being carried on the accessing business network gate that is handed down in the Access-Accept message in the current field network of living in of user terminal after authentication passes through to user terminal;

C2, described accessing business network gate are handed down to user terminal with the address configuration mode of carrying in the Access-Accept message that receives.

7, method as claimed in claim 5 is characterized in that, described step C specifically comprises step:

C1, described ownership aaa server carry out the address configuration mode being carried on the accessing business network gate that is handed down in the Access-Accept message in the current field network of living in of user terminal after authentication passes through to user terminal;

C2, described accessing business network gate carry out buffer memory with the address configuration mode of carrying in the Access-Accept message that receives;

C3, the user terminal accessing business network gate request care-of address configuration mode in current field network of living in;

The request that c4, described accessing business network gate response user terminal is sent is handed down to user terminal with the address configuration mode of buffer memory.

8, method as claimed in claim 7 is characterized in that, user terminal is by the accessing business network gate request care-of address configuration mode of DHCPv6 Information Request message in current field network of living among the described step c3;

Accessing business network gate is carried in the DHCPv6 Reply message by the address configuration mode with buffer memory and is handed down to user terminal among the described step c4.

As claim 1,2 or 3 described methods, it is characterized in that 9, the current network provider of living in of user terminal is the non-attribution network provider, described aaa server is the visit aaa server of user terminal in the current network service provider.

10, method as claimed in claim 9 is characterized in that, described step B specifically comprises step:

B1, user terminal send Access-Request message by the accessing business network gate in the current field network of living in to the visit aaa server when beginning to carry out the access authentication processing, realize to visit aaa server request care-of address configuration mode;

B2, described visit aaa server give the ownership aaa server of user terminal with the Access-Request forwards that receives, and the ownership aaa server of request user terminal carries out authentication process to user terminal.

11, method as claimed in claim 10 is characterized in that, described step C specifically comprises step:

C_1, described ownership aaa server carry out after authentication passes through user terminal, to the visit aaa server feedback Access-Accept of user terminal message;

C_2, described visit aaa server are carried on the address configuration mode accessing business network gate that is handed down in the Access-Accept message that receives in the current field network of living in of user terminal;

C_3, described accessing business network gate are handed down to user terminal with the address configuration mode of carrying in the Access-Accept message that receives.

12, method as claimed in claim 10 is characterized in that, described step C specifically comprises step:

C_1, described ownership aaa server carry out after authentication passes through user terminal, to the visit aaa server feedback Access-Accept of user terminal message;

C_2, described visit aaa server are carried on the address configuration mode accessing business network gate that is handed down in the Access-Accept message that receives in the current field network of living in of user terminal;

C_3, described accessing business network gate carry out buffer memory with the address configuration mode of carrying in the Access-Accept message that receives;

C_4, the user terminal accessing business network gate request care-of address configuration mode in current field network of living in;

The request that c_5, described accessing business network gate response user terminal is sent is handed down to user terminal with the address configuration mode of buffer memory.

13, method as claimed in claim 12 is characterized in that, user terminal is by the accessing business network gate request care-of address configuration mode of DHCPv6 Information Request message in current field network of living among the described step c_4;

Accessing business network gate is carried in the DHCPv6 Reply message by the address configuration mode with buffer memory and is handed down to user terminal among the described step c_5.

As claim 1,2 or 3 described methods, it is characterized in that 14, described address configuration mode includes state auto configuration mode, stateless auto configuration mode, state arranged/stateless mixing auto configuration mode and manual configuration mode.

15, a kind of acquisition methods of care-of address configuration mode is characterized in that, comprises step:

(1) in based on each router in the WiMAX network system of mobile IP v 6, the address configuration mode is set;

(2) the router solicitation care-of address configuration mode of user terminal in current field network of living in;

(3) router in the current field network of living in of the user terminal response user terminal request of sending is handed down to user terminal with the address configuration mode of described setting;

(4) user terminal with the address configuration mode that receives as the care-of address configuration mode in the field network of place.

16, method as claimed in claim 15 is characterized in that, user terminal is by the router solicitation care-of address configuration mode of Router Solicitation message in current field network of living in the described step (2);

Router in the described step (3) in the field network is carried in the Router Advertisement message by the address configuration mode with described setting and is handed down to user terminal.

As claim 15 or 16 described methods, it is characterized in that 17, described address configuration mode includes state auto configuration mode, stateless auto configuration mode, state arranged/stateless mixing auto configuration mode and manual configuration mode.

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