CN1972316A - Care-of address and its acquisition method and system for configuration information of care-of address - Google Patents
Care-of address and its acquisition method and system for configuration information of care-of address Download PDFInfo
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Abstract
本发明公开了一种转交地址的获取方法，包括步骤：在基于移动IPv6的WiMAX网络系统中，用户终端选定所在外地网络中的DHCP服务器；并向选定的DHCP服务器请求自身的转交地址；所述选定的DHCP服务器响应用户终端的请求，将配置给用户终端的转交地址下发给用户终端。相应的，本发明还公开了另外一种转交地址的获取方法。本发明可以使在应用了MIPv6技术的WiMAX网络系统中用户终端能够切实可行的获取到转交地址的相关信息。
The invention discloses a method for obtaining a care-of address, comprising steps: in a mobile IPv6-based WiMAX network system, a user terminal selects a DHCP server in a foreign network; and requests the selected DHCP server for its own care-of address; The selected DHCP server sends the care-of address configured for the user terminal to the user terminal in response to the request of the user terminal. Correspondingly, the present invention also discloses another method for obtaining the care-of address. The invention can enable the user terminal in the WiMAX network system applying the MIPv6 technology to obtain the related information of the care-of address practicably.
Description
Technical field
The present invention relates in the WiMAX system, use the technical field of mobile IP v 6, especially relate to the acquisition methods and the system of a kind of Care-of Address and care-of address configuration information thereof.
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 the CoA address of self in this processing procedure, realize in the WiMAX network system that simultaneously how MSS obtains the CoA address relevant information of self, thereby be to set up the corresponding relation of CoA address and HoA address and home network and the routing relation of field network to reach MSS and communicate by letter with CN and do not interrupt the basic guarantee of purpose.
Put down in writing in WiMAX " 050915 NWG STAGE2.doc " document wherein that MSS obtains the scheme of CoA address in the WiMAX network system of having used the mobile IP v 6 technology, a kind of scheme is to distribute the CoA address by the address allocation server in the service network; Another kind of scheme is to use the automatic configuration mechanism of stateless to realize the distribution of CoA address.
But in above-mentioned document, it is the rough allocative decision of having mentioned the CoA address, and the acquisition process of CoA address relevant information is divided into two parts: a part is obtaining of CoA address itself, and another part is obtaining (the CoA address configuration information comprises as information such as available DNS tabulation, NTP tabulations) of CoA address configuration information.And do not provide the processing scheme that complete all relevant informations to the CoA address are obtained in the above-mentioned document, and the allocative decision of the CoA address of record itself is also described too roughly.
Summary of the invention
The technical problem to be solved in the present invention is to propose the acquisition methods and the system of a kind of Care-of Address and care-of address configuration information thereof, so that user terminal can practicablely get access to the relevant information of Care-of Address in the WiMAX network system of having used the mobile IP v 6 technology.
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 comprises step:
A, in WiMAX network system based on mobile IP v 6, the Dynamic Host Configuration Protocol server in the field network of the selected place of user terminal; And
B, to the Care-of Address of selected Dynamic Host Configuration Protocol server request self;
The request of C, described selected dhcp server response user terminal is handed down to user terminal for the Care-of Address of user terminal configuration.
Preferably, also comprise step before the described steps A:
User terminal obtains the home link prefix in the home network; And
Obtain the current network link prefix of the router advertisement in the network of current place;
User terminal judges whether the home link prefix of obtaining is identical with current network link prefix, if then finish; Otherwise judge that current place network is a field network, and execution in step A.
Preferably, user terminal is carrying out the aaa server in the network provider of place in the authentication processing procedure to user terminal in the described steps A, and indication gives the Dynamic Host Configuration Protocol server of user terminal as selected Dynamic Host Configuration Protocol server.
Preferably, described steps A specifically comprises:
A1. user terminal all Dynamic Host Configuration Protocol server in the field network of place send DHCPv6 Solicit message; And
A2. in the Dynamic Host Configuration Protocol server of feedback DHCPv6 Advertise message, select a Dynamic Host Configuration Protocol server.
Preferably, described step a2 specifically comprises:
A21. the user terminal selecting feedback is not carried the Dynamic Host Configuration Protocol server of the DHCPv6 Advertise message of no available address option; And
A22. judge whether the Dynamic Host Configuration Protocol server select unique, if, with the Dynamic Host Configuration Protocol server selected as the Dynamic Host Configuration Protocol server of selecting; Otherwise
A23. in feedback in the Dynamic Host Configuration Protocol server of DHCPv6 Advertise message of the no available address option of carrying, and then, select the highest Dynamic Host Configuration Protocol server of performance according to the server performance parameter of carrying in the DHCPv6 Advertise message of feeding back; And
A24. judge whether the Dynamic Host Configuration Protocol server select unique, if, with the Dynamic Host Configuration Protocol server selected as the Dynamic Host Configuration Protocol server of selecting; Otherwise
A25. user terminal is according to the DHCPv6Advertise message of the highest Dynamic Host Configuration Protocol server feedback of the performance selected, and the Dynamic Host Configuration Protocol server of selecting to include in the DHCPv6 Advertise message of a feedback self information of interest is as selected Dynamic Host Configuration Protocol server.
Preferably, also comprise the step of user terminal among the described step B to selected Dynamic Host Configuration Protocol server request care-of address configuration information;
Also comprise the request of selected dhcp server response user terminal among the described step C, care-of address configuration information is handed down to the step of user terminal.
Preferably, user terminal passes through Care-of Address and the care-of address configuration information thereof of DHCPv6 Request message to selected Dynamic Host Configuration Protocol server request self among the described step B;
Selected Dynamic Host Configuration Protocol server is handed down to user terminal by disposing to be encapsulated in the DHCPv6 Reply message to the Care-of Address of user terminal and care-of address configuration information thereof among the described step C.
A kind of system that obtains of Care-of Address comprises:
Dynamic Host Configuration Protocol server is selected the unit, is used in the WiMAX network system based on mobile IP v 6 the Dynamic Host Configuration Protocol server in the field network of the selected place of user terminal;
The Care-of Address request unit is used for the Care-of Address of user terminal to the selected Dynamic Host Configuration Protocol server request self in the selected unit of described Dynamic Host Configuration Protocol server;
Care-of Address issues the unit, is used for the request that the selected described Care-of Address request unit of dhcp server response in the selected unit of described Dynamic Host Configuration Protocol server is sent, and is handed down to user terminal for the Care-of Address of user terminal configuration.
A kind of acquisition methods of care-of address configuration information comprises step:
1) in WiMAX network system based on mobile IP v 6, the Dynamic Host Configuration Protocol server in the field network of the selected place of user terminal; And
2) to selected Dynamic Host Configuration Protocol server request care-of address configuration information;
3) request of described selected dhcp server response user terminal is handed down to user terminal for the care-of address configuration information of user terminal configuration.
Preferably, also comprise step before the described step 1):
User terminal obtains the home link prefix in the home network; And
Obtain the current network link prefix of the router advertisement in the network of current place;
User terminal judges whether the home link prefix of obtaining is identical with current network link prefix, if then finish; Otherwise judge that current place network is a field network, and execution in step 1).
Preferably, described step 1) user terminal is carrying out the aaa server in the network provider of place in the authentication processing procedure to user terminal, and indication gives the Dynamic Host Configuration Protocol server of user terminal as selected Dynamic Host Configuration Protocol server.
Preferably, described step 1) specifically comprises:
1-1) user terminal all Dynamic Host Configuration Protocol server in the field network of place send DHCPv6 Solicit message; And
1-2) selected Dynamic Host Configuration Protocol server in the Dynamic Host Configuration Protocol server of feedback DHCPv6 Advertise message.
Preferably, described step 1-2) specifically comprise:
1-21) the user terminal selecting feedback is not carried the Dynamic Host Configuration Protocol server of the DHCPv6 Advertise message of no available address option; And
1-22) judge whether the Dynamic Host Configuration Protocol server select unique, if, with the Dynamic Host Configuration Protocol server selected as the Dynamic Host Configuration Protocol server of selecting; Otherwise
1-23) in the Dynamic Host Configuration Protocol server that feeds back the DHCPv6 Advertise message of carrying no available address option, and then the server performance parameter of carrying in the DHCPv6 Advertise message according to feedback, the highest Dynamic Host Configuration Protocol server of performance selected; And
1-24) judge whether the Dynamic Host Configuration Protocol server select unique, if, with the Dynamic Host Configuration Protocol server selected as the Dynamic Host Configuration Protocol server of selecting; Otherwise
1-25) user terminal is according to the DHCPv6Advertise message of the highest Dynamic Host Configuration Protocol server feedback of the performance selected, and the Dynamic Host Configuration Protocol server of selecting to include in the DHCPv6 Advertise message of a feedback self information of interest is as selected Dynamic Host Configuration Protocol server.
Preferably, user terminal passes through DHCPv6 Information Request message to selected Dynamic Host Configuration Protocol server request care-of address configuration information described step 2);
Selected Dynamic Host Configuration Protocol server is encapsulated in the DHCPv6 Reply message and is handed down to user terminal by disposing care-of address configuration information to user terminal in the described step 3).
A kind of system that obtains of care-of address configuration information comprises:
Dynamic Host Configuration Protocol server is selected the unit, is used in the WiMAX network system based on mobile IP v 6 the Dynamic Host Configuration Protocol server in the field network of the selected place of user terminal;
The configuration request unit is used for user terminal to the selected Dynamic Host Configuration Protocol server request care-of address configuration information in the selected unit of described Dynamic Host Configuration Protocol server;
Configuration information issues the unit, is used for the request that the selected described configuration request of dhcp server response unit, the selected unit of described Dynamic Host Configuration Protocol server is sent, and is handed down to user terminal for the care-of address configuration information of user terminal configuration.
The beneficial effect that the present invention can reach is as follows:
The scheme of obtaining of the Care-of Address that the present invention proposes is by in the WiMAX network system based on MIPv6, Dynamic Host Configuration Protocol server in the field network of the selected place of user terminal, and to the Care-of Address of selected Dynamic Host Configuration Protocol server request self, the request of selected dhcp server response user terminal, be handed down to user terminal for the Care-of Address of user terminal configuration, realized that with this in the WiMAX network system of applying MIP v6 technology user terminal can practicablely get access to the purpose of Care-of Address, and then created precondition for follow-up mobile IP processing procedure.
The scheme of obtaining of the care-of address configuration information that the present invention proposes is by in the WiMAX network system based on MIPv6, Dynamic Host Configuration Protocol server in the field network of the selected place of user terminal, and to selected Dynamic Host Configuration Protocol server request care-of address configuration information, the request of selected dhcp server response user terminal is handed down to user terminal for the care-of address configuration information of user terminal configuration.Thereby realized that in the WiMAX network system of applying MIP v6 technology user terminal can practicablely get access to the purpose of care-of address configuration information, and then created precondition for follow-up mobile IP processing procedure.
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 of the present invention address;
Fig. 4 is the main composition structured flowchart of the system that obtains of CoA of the present invention address;
Fig. 5 is the main realization principle flow chart of the acquisition methods of the CoA address configuration information of the present invention's proposition;
Fig. 6 is the main composition structured flowchart of the system that obtains of CoA address configuration information of the present invention;
Fig. 7 is the specific implementation process schematic diagram of Stateful Auto-Configuration mode in the inventive method.
Embodiment
The present invention program at set forth in the above-mentioned prior art in the WiMAX network system of having used the mobile IP v 6 technology, still can keep when realizing in MSS stays out township's network with CN between communicate by letter and do not interrupt, wherein to handle be exactly that MSS obtains CoA address relevant information in the field network of place one of most critical step, promptly obtain CoA address and CoA address configuration information thereof in the field network of place, and MSS can obtain its CoA address relevant information in having used the WiMAX network system of mobile IP v 6 method and system thereof proposed, with so be that follow-up mobile IP processing procedure is created precondition.
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 of the present invention address, and its main implementation procedure is as follows:
Step S10, in the WiMAX network system of having used the MIPv6 technology, the Dynamic Host Configuration Protocol server in the field network of the selected place of user terminal (following will be that example describes with MSS);
Wherein MSS will judge that also the present located network is a field network before above-mentioned steps S10, or home network, and concrete deterministic process is as follows:
MSS obtains the home link prefix (HL, Home Link Prefix) in the home network, and obtains current network link prefix in the Router Advertisement message that issues of the router in the network of current place;
MSS judges whether the current network link prefix of obtaining is identical with the home link prefix, if, confirm that then MSS present located network is a home network, need not to carry out follow-up CoA address and obtain processing procedure; Otherwise confirm that MSS present located network is a field network, need to continue execution the step S10 here.
Wherein the Dynamic Host Configuration Protocol server in the field network of the selected place of MSS can be finished by following dual mode here:
First kind of mode: MSS can carry out the aaa server in the place network provider (NSP, Network ServiceProvider) in the authentication processing procedure to MSS, and indication gives the Dynamic Host Configuration Protocol server of MSS as selected Dynamic Host Configuration Protocol server.
The second way: MSS all Dynamic Host Configuration Protocol server in the field network of place send DHCPv6Solicit message, and select a Dynamic Host Configuration Protocol server in the Dynamic Host Configuration Protocol server that has fed back DHCPv6 Advertise message.Wherein the processing procedure of a selected Dynamic Host Configuration Protocol server is specific as follows in the Dynamic Host Configuration Protocol server that has fed back DHCPv6 Advertise message:
A.MSS selects the not Dynamic Host Configuration Protocol server of the DHCPv6 Advertise message of carrying " no available address " option of feedback, and judge whether the Dynamic Host Configuration Protocol server that this time select is unique, if, just with the Dynamic Host Configuration Protocol server selected as selected Dynamic Host Configuration Protocol server; Otherwise
B. in the Dynamic Host Configuration Protocol server that feeds back the DHCPv6 Advertise message of carrying " no available address " option, and then the server performance parameter of carrying in the DHCPv6 Advertise message according to feedback, select the highest Dynamic Host Configuration Protocol server of performance, and judge whether the Dynamic Host Configuration Protocol server that this time select is unique, if, just with the Dynamic Host Configuration Protocol server selected as selected Dynamic Host Configuration Protocol server; Otherwise
C.MSS is according to the DHCPv6 Advertise message of the highest Dynamic Host Configuration Protocol server feedback of the performance selected, and the Dynamic Host Configuration Protocol server of selecting to include in the DHCPv6 Advertise message of a feedback self information of interest is with as the Dynamic Host Configuration Protocol server of selecting.
The CoA address of Dynamic Host Configuration Protocol server request in this field network that step S20, MSS select in above-mentioned zone network outside; In addition, the CoA address configuration information of Dynamic Host Configuration Protocol server request in this field network that MSS can also and then select in above-mentioned zone network outside, wherein MSS can realize to selected the CoA address of Dynamic Host Configuration Protocol server request in this field network and the purpose of CoA address configuration information thereof by send DHCPv6 Request message to above-mentioned selected Dynamic Host Configuration Protocol server.
Step S30, the request that selected dhcp server response MSS sends, be handed down to MSS for the CoA address of MSS configuration, and then can also be handed down to MSS for the CoA address configuration information of MSS configuration, wherein Xuan Ding Dynamic Host Configuration Protocol server can be handed down to MSS by disposing to be encapsulated in the DHCPv6 Reply message to the CoA address of user terminal and CoA address configuration information thereof, thereby realizes the CoA address in the field network of MSS place and CoA address configuration information thereof are notified to the purpose of MSS.
Accordingly, the main realization principle of the CoA address acquiring method of the above-mentioned proposition of corresponding the present invention, the present invention has also proposed the system that obtains of a kind of CoA address here, please refer to Fig. 4, this figure is the main composition structured flowchart of the system that obtains of CoA of the present invention address, it comprises that mainly Dynamic Host Configuration Protocol server selectes unit 10, Care-of Address request unit 20 and Care-of Address and issue unit 30, and wherein the main effect of each part is as follows:
Dynamic Host Configuration Protocol server is selected unit 10, is mainly used in having used the WiMAX network system of MIPv6 the Dynamic Host Configuration Protocol server in the field network of the selected place of user terminal (as MSS);
Care-of Address request unit 20 is mainly used in user terminal is selected CoA address from the Dynamic Host Configuration Protocol server request of selecting unit 10 self to above-mentioned Dynamic Host Configuration Protocol server;
Care-of Address issues unit 30, is mainly used in the request that the selected unit of the above-mentioned Dynamic Host Configuration Protocol server 10 selected above-mentioned Care-of Address request units 20 of dhcp server response are sent, and is handed down to user terminal for the CoA address of user terminal configuration.
In addition, the concrete technology of other of the CoA address acquisition system of the above-mentioned proposition of the present invention realizes that the correlation technique of details in can the above-mentioned CoA address acquiring method of corresponding reference realizes the description of details, no longer too much gives unnecessary details here.
The user terminal of describing in the CoA address acquiring method that the invention described above proposes obtains the processing procedure of CoA address configuration information and can also use in conjunction with other CoA address obtain manner in field network, please refer to Fig. 5, this figure is the main realization principle flow chart of the acquisition methods of the CoA address configuration information that proposes of the present invention, and its main implementation procedure is as follows:
Step S100, in having used the WiMAX network system of MIPv6, the Dynamic Host Configuration Protocol server in the field network of the selected place of user terminal (following will be that example describes with MSS);
Wherein MSS will judge that also the present located network is a field network before above-mentioned steps S100, or home network, and concrete deterministic process please refer to the corresponding description in the acquisition methods of above-mentioned CoA address, no longer too much gives unnecessary details here.
Here how MSS selectes Dynamic Host Configuration Protocol server in the field network of place in addition, also please refer to the corresponding description in the acquisition methods of above-mentioned CoA address, no longer too much gives unnecessary details here.
Step S200, the CoA address configuration information of Dynamic Host Configuration Protocol server request in this field network that MSS selectes in above-mentioned zone network outside, wherein MSS can realize the purpose to the selected CoA address configuration information of Dynamic Host Configuration Protocol server request in this field network by send DHCPv6 Information Request message to above-mentioned selected Dynamic Host Configuration Protocol server.
Step S300, the request that selected dhcp server response MSS sends, be handed down to MSS for the CoA address configuration information of MSS configuration, wherein Xuan Ding Dynamic Host Configuration Protocol server can be encapsulated in the DHCPv6 Reply message and is handed down to MSS by disposing CoA address configuration information to MSS, thereby realizes the CoA address configuration information in the field network of MSS place is notified to the purpose of MSS.
The main realization principle of the acquisition methods of the CoA address configuration information of the above-mentioned proposition of corresponding the present invention, the present invention has also proposed a kind of system that obtains of CoA address configuration information here, please refer to Fig. 6, this figure is the main composition structured flowchart of the system that obtains of CoA address configuration information of the present invention, it comprises that mainly Dynamic Host Configuration Protocol server selectes unit 100, configuration request unit 200 and configuration information and issue unit 300, and wherein the main effect of each part is specific as follows:
Dynamic Host Configuration Protocol server is selected unit 100, is mainly used in having used the WiMAX network system of MIPv6 the Dynamic Host Configuration Protocol server in the field network of the selected place of user terminal;
Configuration request unit 200 is mainly used in the Dynamic Host Configuration Protocol server request care-of address configuration information that user terminal is selected to the selected unit 100 of above-mentioned Dynamic Host Configuration Protocol server;
Configuration information issues unit 300, is mainly used in the request that the 100 selected above-mentioned configuration request of dhcp server response unit 200, the selected unit of above-mentioned Dynamic Host Configuration Protocol server are sent, and is handed down to user terminal for the care-of address configuration information of user terminal configuration.
In addition, the concrete technology of other of the system that obtains of the CoA address configuration information of the above-mentioned proposition of the present invention realizes that the correlation technique of details in can the acquisition methods of the above-mentioned CoA address configuration information of corresponding reference realizes the description of details, no longer too much gives unnecessary details here.
The present invention here with above-mentioned MSS in WiMAX network system based on the MIPv6 technology, the processing mode of obtaining CoA address and CoA address configuration information thereof has been referred to as state auto configuration mode (Stateful Auto-Configuration).Please refer to Fig. 7, this figure is the specific implementation process schematic diagram of StatefulAuto-Configuration mode in the inventive method, and its concrete implementation process is as follows:
1) network side at MSS and current place is finished the processing procedures such as foundation of authentication, registration and data channel;
2) suppose that here MSS is formed in the link local address (link-local address) in the current network 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, and then can confirm that on the link-local of Interface Identifier in current network of the MSS that aforementioned calculation obtains also be unique.
3) MSS obtains the relevant configuration information (as home link prefix HL etc.) in the home network, and obtains home network and indicate it to utilize stateful Auto-Configuration mode to obtain the indication information of the CoA address relevant information of self.
4) router of MSS in the network of current place sends Router Solicitation message, and this step can occur in above-mentioned steps 2) and 3) the front, also can occur in above-mentioned steps 2) and 3) the back, do not have necessary time sequencing; As long as above-mentioned steps 1) directly execution in step 4 just is finished), because step 4) and above-mentioned steps 2) and 3) between be the step that can independently carry out synchronously; Here be recommended in above-mentioned steps 1) carry out the step 4) here after being finished immediately, to shorten the processing time that MSS obtains CoA address relevant information.
5) router in the network of the current place of MSS responds the Router Solicitation message that MSS sends by sending Router Advertisement message, wherein includes current network link prefix in the Router Advertisement message.
6) current network link prefix and the above-mentioned home link prefix HL that gets access in step 3) that comprises among the prefix information option of MSS Router Advertisement message that the router in the network of current place is issued compares, and judges whether oneself is positioned at home network.If comparative result is identical, the current network that means the MSS place is a home network, the then unnecessary processing procedure of obtaining of carrying out follow-up CoA address relevant information; If comparative result is inequality, MSS confirms own in field network, needs to continue to carry out the processing of obtaining of follow-up CoA address relevant information, promptly needs to continue to carry out subsequent step 7).
7) if in above-mentioned steps 1) in, aaa server among the current place NSP of MSS is carrying out in the authentication processing procedure MSS, the Dynamic Host Configuration Protocol server information in the network of the current place of MSS is notified to MSS, then the step 8) here just can be omitted, and directly carries out following step 9); Otherwise 8) just must carry out, 8) in MSS outwards all Dynamic Host Configuration Protocol server in the network send DHCPv6Solicit message, and in the DHCPv6 Solicit message that responds its transmission, select in the Dynamic Host Configuration Protocol server of feedback DHCPv6Advertisement message one or more Dynamic Host Configuration Protocol server (because the DHCPv6 Solicit message that MSS sends is to send on the multicast address of all Dynamic Host Configuration Protocol server---wherein carry out relaying by DHCP Relay Agent possibly, therefore all Dynamic Host Configuration Protocol server in the field network all can receive the DHCP Solicit message that MSS sends, but have only corresponding D HCP server just can respond, as have a Dynamic Host Configuration Protocol server of the management agreement of responding MSS), it is specific as follows that wherein MSS selects the selection processing procedure of one or more Dynamic Host Configuration Protocol server in a plurality of Dynamic Host Configuration Protocol server of responding DHCPv6 Advertisement message:
A) at first, MSS is chosen in the Dynamic Host Configuration Protocol server that occurs " no available address " among the Status Code option of DHCPv6 Advertise message of feedback;
B) if at above-mentioned A) in MSS selected a plurality of Dynamic Host Configuration Protocol server, the server performance parameter that comprises in MSS meeting and then the DHCPv6 Advertise message that feeds back to according to the Dynamic Host Configuration Protocol server of selecting, the highest Dynamic Host Configuration Protocol server of selection performance;
C) if at above-mentioned B) in have the identical Dynamic Host Configuration Protocol server of a plurality of peak performances, MSS meeting and then select a Dynamic Host Configuration Protocol server that comprises its information of interest in the DHCPv6 Advertise message of its feedback therein.
In addition, the DHCPv6 Advertisement message attributes that MSS can also feed back respectively according to each Dynamic Host Configuration Protocol server that has fed back DHCPv6 Advertisement message is selected the Dynamic Host Configuration Protocol server that better advertised parameter is arranged.Wherein MSS selects the selection criterion of Dynamic Host Configuration Protocol server please specifically referring to [RFC 3315] in a plurality of Dynamic Host Configuration Protocol server of feedback DHCPv6 Advertisement message.
8) MSS sends DHCPv6 Request message to the above-mentioned Dynamic Host Configuration Protocol server of having selected to locate, and asks it to issue CoA address (CoA_Addr) and CoA address configuration information (CoA_CI, CoAConfiguration Information);
9) CoA address (CoA_Addr) and the CoA address configuration information (CoA_CI) thereof of Xuan Ding Dynamic Host Configuration Protocol server by will distributing to MSS respectively is carried in the DHCPv6 Reply message and is handed down to MSS;
10) MSS obtains its CoA address (CoA_Addr) that comprises and CoA address configuration information (CoA_CI) thereof from the DHCPv6 Reply message that receives, thereby has realized the CoA address that gets access to self that MSS can success in the WiMAX network system of having used the MIPv6 technology and the purpose of CoA address configuration information thereof.
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 relevant information and corresponding message in field network, filled up to have now in the WiMAX network system of having used the MIPv6 technology, not specifying how MSS obtains CoA address relevant information in field network blank, established important basis in the WiMAX network system, realizing the mobile IP v 6 technology conscientiously.
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 (15)
1, a kind of acquisition methods of Care-of Address is characterized in that, comprises step:
A, in WiMAX network system based on mobile IP v 6, the Dynamic Host Configuration Protocol server in the field network of the selected place of user terminal; And
B, to the Care-of Address of selected Dynamic Host Configuration Protocol server request self;
The request of C, described selected dhcp server response user terminal is handed down to user terminal for the Care-of Address of user terminal configuration.
2, the method for claim 1 is characterized in that, also comprises step before the described steps A:
User terminal obtains the home link prefix in the home network; And
Obtain the current network link prefix of the router advertisement in the network of current place;
User terminal judges whether the home link prefix of obtaining is identical with current network link prefix, if then finish; Otherwise judge that current place network is a field network, and execution in step A.
3, the method for claim 1, it is characterized in that, user terminal is carrying out the aaa server in the network provider of place in the authentication processing procedure to user terminal in the described steps A, and indication gives the Dynamic Host Configuration Protocol server of user terminal as selected Dynamic Host Configuration Protocol server.
4, the method for claim 1 is characterized in that, described steps A specifically comprises:
A1. user terminal all Dynamic Host Configuration Protocol server in the field network of place send DHCPv6 Solicit message; And
A2. in the Dynamic Host Configuration Protocol server of feedback DHCPv6 Advertise message, select a Dynamic Host Configuration Protocol server.
5, method as claimed in claim 4 is characterized in that, described step a2 specifically comprises:
A21. the user terminal selecting feedback is not carried the Dynamic Host Configuration Protocol server of the DHCPv6 Advertise message of no available address option; And
A22. judge whether the Dynamic Host Configuration Protocol server select unique, if, with the Dynamic Host Configuration Protocol server selected as the Dynamic Host Configuration Protocol server of selecting; Otherwise
A23. in feedback in the Dynamic Host Configuration Protocol server of DHCPv6 Advertise message of the no available address option of carrying, and then, select the highest Dynamic Host Configuration Protocol server of performance according to the server performance parameter of carrying in the DHCPv6 Advertise message of feeding back; And
A24. judge whether the Dynamic Host Configuration Protocol server select unique, if, with the Dynamic Host Configuration Protocol server selected as the Dynamic Host Configuration Protocol server of selecting; Otherwise
A25. user terminal is according to the DHCPv6Advertise message of the highest Dynamic Host Configuration Protocol server feedback of the performance selected, and the Dynamic Host Configuration Protocol server of selecting to include in the DHCPv6 Advertise message of a feedback self information of interest is as selected Dynamic Host Configuration Protocol server.
6, the method for claim 1 is characterized in that, also comprises the step of user terminal to selected Dynamic Host Configuration Protocol server request care-of address configuration information among the described step B;
Also comprise the request of selected dhcp server response user terminal among the described step C, care-of address configuration information is handed down to the step of user terminal.
7, method as claimed in claim 6 is characterized in that, user terminal is by Care-of Address and the care-of address configuration information thereof of DHCPv6 Request message to selected Dynamic Host Configuration Protocol server request self among the described step B;
Selected Dynamic Host Configuration Protocol server is handed down to user terminal by disposing to be encapsulated in the DHCPv6 Reply message to the Care-of Address of user terminal and care-of address configuration information thereof among the described step C.
8, a kind of system that obtains of Care-of Address is characterized in that, comprising:
Dynamic Host Configuration Protocol server is selected the unit, is used in the WiMAX network system based on mobile IP v 6 the Dynamic Host Configuration Protocol server in the field network of the selected place of user terminal;
The Care-of Address request unit is used for the Care-of Address of user terminal to the selected Dynamic Host Configuration Protocol server request self in the selected unit of described Dynamic Host Configuration Protocol server;
Care-of Address issues the unit, is used for the request that the selected described Care-of Address request unit of dhcp server response in the selected unit of described Dynamic Host Configuration Protocol server is sent, and is handed down to user terminal for the Care-of Address of user terminal configuration.
9, a kind of acquisition methods of care-of address configuration information is characterized in that, comprises step:
1) in WiMAX network system based on mobile IP v 6, the Dynamic Host Configuration Protocol server in the field network of the selected place of user terminal; And
2) to selected Dynamic Host Configuration Protocol server request care-of address configuration information;
3) request of described selected dhcp server response user terminal is handed down to user terminal for the care-of address configuration information of user terminal configuration.
10, method as claimed in claim 9 is characterized in that, also comprises step before the described step 1):
User terminal obtains the home link prefix in the home network; And
Obtain the current network link prefix of the router advertisement in the network of current place;
User terminal judges whether the home link prefix of obtaining is identical with current network link prefix, if then finish; Otherwise judge that current place network is a field network, and execution in step 1).
11, method as claimed in claim 9, it is characterized in that, described step 1) user terminal is carrying out the aaa server in the network provider of place in the authentication processing procedure to user terminal, and indication gives the Dynamic Host Configuration Protocol server of user terminal as selected Dynamic Host Configuration Protocol server.
12, method as claimed in claim 9 is characterized in that, described step 1) specifically comprises:
1-1) user terminal all Dynamic Host Configuration Protocol server in the field network of place send DHCPv6 Solicit message; And
1-2) selected Dynamic Host Configuration Protocol server in the Dynamic Host Configuration Protocol server of feedback DHCPv6 Advertise message.
13, method as claimed in claim 12 is characterized in that, described step 1-2) specifically comprise:
1-21) the user terminal selecting feedback is not carried the Dynamic Host Configuration Protocol server of the DHCPv6 Advertise message of no available address option; And
1-22) judge whether the Dynamic Host Configuration Protocol server select unique, if, with the Dynamic Host Configuration Protocol server selected as the Dynamic Host Configuration Protocol server of selecting; Otherwise
1-23) in the Dynamic Host Configuration Protocol server that feeds back the DHCPv6 Advertise message of carrying no available address option, and then the server performance parameter of carrying in the DHCPv6 Advertise message according to feedback, the highest Dynamic Host Configuration Protocol server of performance selected; And
1-24) judge whether the Dynamic Host Configuration Protocol server select unique, if, with the Dynamic Host Configuration Protocol server selected as the Dynamic Host Configuration Protocol server of selecting; Otherwise
1-25) user terminal is according to the DHCPv6Advertise message of the highest Dynamic Host Configuration Protocol server feedback of the performance selected, and the Dynamic Host Configuration Protocol server of selecting to include in the DHCPv6 Advertise message of a feedback self information of interest is as selected Dynamic Host Configuration Protocol server.
14, method as claimed in claim 9 is characterized in that, described step 2) in user terminal by DHCPv6 Information Request message to selected Dynamic Host Configuration Protocol server request care-of address configuration information;
Selected Dynamic Host Configuration Protocol server is encapsulated in the DHCPv6 Reply message and is handed down to user terminal by disposing care-of address configuration information to user terminal in the described step 3).
15, a kind of system that obtains of care-of address configuration information is characterized in that, comprising:
Dynamic Host Configuration Protocol server is selected the unit, is used in the WiMAX network system based on mobile IP v 6 the Dynamic Host Configuration Protocol server in the field network of the selected place of user terminal;
The configuration request unit is used for user terminal to the selected Dynamic Host Configuration Protocol server request care-of address configuration information in the selected unit of described Dynamic Host Configuration Protocol server;
Configuration information issues the unit, is used for the request that the selected described configuration request of dhcp server response unit, the selected unit of described Dynamic Host Configuration Protocol server is sent, and is handed down to user terminal for the care-of address configuration information of user terminal configuration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510123946 CN1972316A (en) | 2005-11-24 | 2005-11-24 | Care-of address and its acquisition method and system for configuration information of care-of address |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510123946 CN1972316A (en) | 2005-11-24 | 2005-11-24 | Care-of address and its acquisition method and system for configuration information of care-of address |
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| CN1972316A true CN1972316A (en) | 2007-05-30 |
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| CN 200510123946 Pending CN1972316A (en) | 2005-11-24 | 2005-11-24 | Care-of address and its acquisition method and system for configuration information of care-of address |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009033379A1 (en) * | 2007-09-13 | 2009-03-19 | Zte Corporation | A method and system for obtaining an address of the p-cscf |
| CN102170668A (en) * | 2010-02-25 | 2011-08-31 | 华为技术有限公司 | Method, device and system for switching in wireless relay network |
| CN108063840A (en) * | 2018-01-23 | 2018-05-22 | 广东欧珀移动通信有限公司 | Access the method and Related product of network |
| CN114172799A (en) * | 2021-12-08 | 2022-03-11 | 武汉大塔技术有限公司 | Method, system and medium for realizing NTP client rapid configuration deployment based on DHCP |
-
2005
- 2005-11-24 CN CN 200510123946 patent/CN1972316A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009033379A1 (en) * | 2007-09-13 | 2009-03-19 | Zte Corporation | A method and system for obtaining an address of the p-cscf |
| CN102170668A (en) * | 2010-02-25 | 2011-08-31 | 华为技术有限公司 | Method, device and system for switching in wireless relay network |
| CN108063840A (en) * | 2018-01-23 | 2018-05-22 | 广东欧珀移动通信有限公司 | Access the method and Related product of network |
| CN114172799A (en) * | 2021-12-08 | 2022-03-11 | 武汉大塔技术有限公司 | Method, system and medium for realizing NTP client rapid configuration deployment based on DHCP |
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