CN101860849B - Method for judging and informing terminal R3 mobile mode in WiMAX network - Google Patents
Method for judging and informing terminal R3 mobile mode in WiMAX network Download PDFInfo
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Abstract
The invention provides a method for judging and informing a terminal R3 mobile mode in a WiMAX network, which comprises the following steps that: 1) a terminal is accessed into the network for authentication; 2) if the R3 mode of the terminal is CMIPv4, the terminal is directly registered for mobile IP, and simultaneously, the terminal adopts a network socket mode based on Linux to send a registration message to a foreign agent; if the R3 mode of the terminal is PMIPv4, the terminal can send a DHCP discover message, a DHCP agent server triggers a mobile IP agent client in an access service network to carry out mobile IP registration after intercepting the discover message, and simultaneously, the mobile IP agent client sends the registration message to the foreign agent via a local socket mode based on Linux; 3) the foreign agent receives the registration message and judges according to the source mode of the message, and if the registration message is received in a network socket mode, the R3 mobile mode of the terminal is judged to be CMIPv4; and if the registration message is received by the mode of local socket, the R3 mobile mode of the terminal is judged to be PMIPv4.
Description
Technical field
The present invention relates to a kind of WiMAX (Worldwide Interoperability for Microwave Access; World Interoperability for Microwave Access, WiMax) application process of network particularly relates to the method that a kind of WiMAX network is used to judge and notify terminal R 3 mobile mode.
Background technology
Mobile IP technology is that mobile node (computer/server/network segment etc.) is with fixing network ip address; Realize crossing over the roaming function of different segment; And any change does not take place, the seamless and continual transmission of realization data in the network legal power that has guaranteed IP Network Based in roam procedure.Say simply, can let network node when moving, not break off connection exactly, and correct transceive data bag.Yet traditional I P design also reckons without mobile node can change the Internet access point in connection problem; The traditional I P address comprises the meaning of two aspects: be to be used for identifying unique main frame on the one hand, it also plays an important role in the route of data as the address of main frame on the other hand.But for mobile node; Because the Internet access point can constantly change; So separation can take place in its IP address aspect two, be that mobile node needs a kind of mechanism come unique identification oneself on the one hand, being on the other hand needs this sign can not be used to route.
In order to address this problem, mobile IP protocol should by and give birth to.Move IP and pass through by internet engineering guidance group IESG (Internet Engineering Steering Group) in June, 1996, and be published as recommended standard in November, 1996.
The course of work and the network environment of mobile IP have been described in Fig. 1.As shown in Figure 1, mobile IP comprises three functional entitys, is respectively mobile node, home agent and Foreign Agent.Wherein, mobile node is the communication equipment terminal, and in moving process, the IP address, local of mobile node remains constant; Home agent is the equipment that is positioned at the affiliated home network of mobile node; Router device etc. normally; Home agent can be intercepted and captured the data message that the opposite end communication node mails to mobile node; Send to Foreign Agent through the tunnel then, hand to mobile node by Foreign Agent at last, and home agent is responsible for safeguarding the current maintenance information of mobile node simultaneously; Foreign Agent is the equipment that is positioned on the field network at mobile node place, and Foreign Agent can provide data pathfinding function and data forwarding function for mobile node, and in addition, Foreign Agent also is responsible for the processing of mobile IP dependent event.
The basic communication flow process of mobile IP technology is following:
1) long-range opposite end communication entity sends an IP packet through standard I P routing mechanism to mobile node;
2) home agent of mobile node is intercepted and captured this packet, with the home address of mobile node in the destination address of this bag and the own mobility binding table relatively, as if with wherein arbitrary address is identical, continues next step, otherwise abandons;
3) home agent with this packet encapsulation, adopts tunnel operations to send to the forwarding address of mobile node with encapsulation mechanism;
4) after the Foreign Agent of mobile node is received this bag, remove it and seal dress, adopt air traffic channel to send to mobile node;
5) after mobile node is received packet, use mobile IP routing mechanism and long-range opposite end communication entity to connect through Foreign Agent.
As on the make wireless access technology; Suggestion WiMAX (Worldwide Interoperability forMicrowave Access; World Interoperability for Microwave Access, WiMax) as new standard, its network wireless side is based on the wireless MAN access technology of IEEE802.16d/e standard and designs.
As shown in Figure 2; The WiMAX network mainly is made up of three parts; Be portable terminal/fixed terminal (MS/SS, Mobile Subscriber Station/Subscriber station are called for short terminal or client), accessing business network (ASN; Access Service Network) and connect service network (CSN, Connectivity Service Network).Wherein, Terminal equipment MS is positioned at the scope of access network; Access network passes through at least one visited network (VCSN, Visited Connectivity Service Network) or go-between and home network (HCSN, HomeConnectivity Service Network) and is connected.WiMAX cellular logic inter-entity communicates to the interface of R6 through R1.The home agent HA at terminal is arranged in home network HCSN or visited network VCSN.
Mobile IPv4 terminal R 3 mobile mode in the present stage WiMAX network has 2 kinds: client MIP (CMIP; Client Mobile IPv4) and act on behalf of MIP (PMIP, Proxy Mobile IPv4), wherein in said client MIP; Mobile radio station self is realized the MIP client functionality; Act on behalf of among the MIP said, the MIP client functionality is realized through being called the proxy mobile node (PMN, Proxy Mobile Node) or the functional entity of PMIP client in the WiMAX access network.
Below introduce respectively under the PMIPv4 pattern with the CMIPv4 pattern under the terminal connection building process.
Under current WiMAX network PMIPv4 pattern; Employed is PMA (Proxy MobilityAgent) pattern of separating; Promptly when terminal initial networks; Foreign agent FA and mobile IP customer terminal are in same ASN entity, along with moving of terminal, and the foreign agent FA situation that appearance separates with mobile IP customer terminal.
As shown in Figure 3, the terminal connection building process under the Proxy Mobile IPv4 pattern that in up-to-date WiMAX Stage2 document, defines is following:
Step 301 access authentication stage: in access authentication stage, the hometown AAA server under the terminal can issue hometown-agent-address, Certificate Authority integration association key, Proxy Mobile IPv4 through access authentication message and connect and set up association key and Dynamic Host Configuration Protocol server address.
The step 302DHCP server configures stage: will obtain the terminal at this stage D HCP acting server and can obtain the Dynamic Host Configuration Protocol server address of home address or directly obtain home address.
Step 303-309IP address assignment and configuration phase: in successful authentication with after authorizing, set up after the data link between BS and the ASN, the terminal can lead to newly-established data link and send a DHCP discover message.2/3 li of Stage two kinds of PMIP4 patterns are provided, one is DHCP Proxy, and another is DHCP Relay.If DHCP Relay pattern, then the DHCP proxy server according to the indications at terminal with its DHCP discover forwards to corresponding D HCP server; If DHCP Proxy pattern, the DHCP proxy server will directly return home address and relevant IP configuration information to the terminal.
Step 310-311 is for not only supporting the PMIP4 pattern but also support the access business network of CMIP4 pattern, and this moment, DHCP proxy server wherein need be the R3 Move Mode that the DHCP proxy server is selected through the R3 Move Mode at specific related functional entities (for example depositing the server of the terminal related information specially) terminal of R3_Mobility_Context message informing network.
For the access business network of only supporting the PMIP4 pattern, this step can be omitted.
Step 312-313 is after obtaining home address through the DHCP agreement, and home address is forwarded to the mobile IP agent client in the access business network through HOA_Address primitive.
The step 314-319 mobile IP registration stage: receive when the PMIP agent client after the home address at terminal that the PMIP agent client can outwards be acted on behalf of and send a mobile IPv 4 registration message and before last dhcp message is mutual, accomplish the mobile IPv 4 registration.The mobile IPv 4 registration message comprises following information:
A. the home address at terminal: this home address possibly distributed by Dynamic Host Configuration Protocol server that preceding step is obtained, and also possibly after access authentication is accomplished, issued by aaa server;
B. Care-of Address: the IP address that is generally Foreign Agent;
C. security related information
In the final stage of connection building process, the terminal has finally obtained its home address and on home agent, has carried out the mobile IPv 4 registration.
Step 320-321DHCP acknowledgment phase: after the mobile IPv 4 registration was accomplished, DHCP ack message just can be accompanied by home address and send to the terminal.
So like Fig. 4, the terminal connection building process is following under the CMIP4 pattern that in current WiMAX stage2 document, defines:
Concrete flow process is described below:
Step 401 access authentication stage: in access authentication stage, the hometown AAA server under the user can issue hometown-agent-address, authentication and authorization charging association key in access authentication message.
Step 402 will trigger the CMIP mode terminal and begin registration after the Business Stream at the data link in the access business network and terminal or terminal is bound.
Step 403 after new access business network data link is set up after, its Care-of Address of terminal broadcast that Foreign Agent will be in network.
Step 404 terminal receives that the Care-of Address of Foreign Agent broadcasting just sends the mobile IPv 4 registration message later on to Foreign Agent, and is forwarded to home agent by Foreign Agent.
If the mobile IPv 4 protocol stack is supported at the terminal at this moment, so just can not send the DHCP request, only can send mobile IP signaling and remove to obtain its home address.
Step 405-406 is for not only supporting the PMIPv4 pattern but also support the access business network of CMIPv4 pattern, and this moment, Foreign Agent need be the selected R3 Move Mode of Foreign Agent through the R3 Move Mode at the specific related functional entities terminal of R3_Mobility_Context message informing network of network.
For the access business network of only supporting the CMIPv4 pattern, this step can be omitted.
Step 407-409 when the terminal attaching aaa server receive by local agent send carry the access request message of MN-HA attribute the time, aaa server need be responded one through inserting message, the MN-HA that wherein comprises encryption shares key.If comprised the cell that dynamically obtains home agent and IP configuration information in the access request message, aaa server also need return the relevant IP configuration information in address and terminal of home agent.
Step 410 home agent sends the mobile IPv 4 registration reply message and gives Foreign Agent.
Step 411 mobile IPv 4 registration reply message is forwarded to the terminal.
The connection building process at the terminal under above-described PMIPv4 and two kinds of patterns of CMIPv4 can be found out, supports simultaneously that in the WiMAX network in the access business network of PMIPv4 pattern and CMIPv4 pattern, network must be known the R3 Move Mode at terminal.And in follow-up moving in the handoff procedure of the mobile IP that causes owing to the terminal, the R3 Move Mode at terminal can be notified to new access business network through the R3 mobile messaging.
Wherein, When terminal under the PMIPv4 pattern connects when setting up, the DHCP proxy server in the Stage2 document definition access business network need be the selected R3 Move Mode of DHCP proxy server through the R3 Move Mode at the specific related functional entities terminal of R3_Mobility_Context message informing network.
And the terminal connects when setting up under the CMIPv4 pattern, and the Foreign Agent in the Stage2 document definition access business network need be the selected R3 Move Mode of DHCP proxy server through the R3 Move Mode at the specific related functional entities terminal of R3_Mobility_Context message informing network.
Therefore in an access business network of supporting PMIPv4 pattern and CMIPv4 pattern simultaneously, Foreign Agent is public for two kinds of Move Mode terminals.Promptly under PMIPv4 pattern and two kinds of situation of CMIPv4 pattern; Mobile IP agent client in the PMIPv4 pattern is outwards acted on behalf of the terminal of sending in mobile IPv 4 registration message and the CMIPv4 pattern and is outwards acted on behalf of transmission mobile IPv 4 registration message, and it is the PMIPv4 pattern or the mobile IPv 4 registration message of CMIPv4 pattern on earth that Foreign Agent can not be distinguished.On the other hand; Because when adopting the PMIPv4 pattern; Exist the DHCP proxy server after the situation of the R3 Move Mode at the specific related functional entities terminal of access business network transmission R3_Mobility_Context message informing network; The R3 Move Mode that in follow-up flow process, exists Foreign Agent to be chosen to be the terminal again is CMIPv4, and the notice that it is wrong causes communication failure to network.
Summary of the invention
The objective of the invention is to; Foreign Agent can not be through mobile IPv 4 registration message differentiation PMIPv4 pattern and CMIPv4 pattern under PMIPv4 pattern and two kinds of situation of CMIPv4 pattern in order to overcome; During simultaneously owing to employing PMIPv4 pattern; Exist the DHCP proxy server after the situation of the R3 Move Mode at the specific related functional entities terminal of access business network transmission R3_Mobility_Context message informing network; The R3 Move Mode that in follow-up flow process, exists Foreign Agent to be chosen to be the terminal again is CMIPv4; And the notice that it is wrong causes communication failure, thereby proposes the method that a kind of WiMAX network is used to judge and notify terminal R 3 mobile mode to network.
A kind of WiMAX network of the present invention's proposition is used to judge and notify the method for terminal R 3 mobile mode for this reason; This method makes Foreign Agent can judge the Move Mode of the R3 at terminal; And Move Mode that can informing network terminal R3, the method for described judgement terminal R 3 mobile mode comprises following steps:
501) the access network authentication is carried out at the terminal;
502) if the R3 pattern at terminal is CMIPv4, mobile IP registration is just directly carried out in the terminal so, and the terminal is adopted and sent registration message to Foreign Agent based on the network socket mode of LiNUX simultaneously; If the R3 pattern at terminal is PMIPv4; DHCP discover message can be sent in the terminal so; After the DHCP proxy server is intercepted and captured discover message; The mobile IP agent client that triggers in the access business network is carried out mobile IP registration, and the mobile IP agent client is sent registration message to Foreign Agent through the local socket mode based on LiNUX simultaneously;
503) Foreign Agent receives registration message and judges according to the source of message, if registration message receives that with network socket mode the R3 Move Mode of so just judging the terminal is CMIPv4; If registration message receives that with local socket mode the R3 Move Mode of so just judging the terminal is PMIPv4;
The method of described informing network terminal R 3 mobile mode comprises following substep:
A. when the terminal was inserted with the CMIPv4 pattern, it was the CMIPv4 pattern that Foreign Agent is judged it to the mobile IP message of receiving, the R3 Move Mode to network functional entity notice terminal is CMIPv4;
B. when the terminal is inserted with the PMIPv4 pattern; The DHCP proxy server is PMIPv4 to the R3 Move Mode at network functional entity notice terminal; When the R3 Move Mode of on Foreign Agent, judging simultaneously the terminal was PMIPv4, Foreign Agent was to the R3 Move Mode at network functional entity notice terminal;
Wherein, described R3 Move Mode comprises: client mobile IP (CMIP) mode and proxy-mobile IP (PMIP) mode.
Technique scheme, described step a) specifically comprises following substep:
601) access authentication stage: in access authentication stage, the hometown AAA server under the terminal can issue hometown-agent-address, Certificate Authority integration association key, Proxy Mobile IPv4 through access authentication message and connect and set up association key and Dynamic Host Configuration Protocol server address;
602) Dynamic Host Configuration Protocol server configuration phase: obtain the terminal at this stage D HCP acting server and can obtain the Dynamic Host Configuration Protocol server address of home address or directly obtain home address;
603-609) IP address assignment and configuration phase: in successful authentication with after authorizing, set up after the data link between BS and the ASN, the terminal sends a DHCP discover message can for newly-established data link;
610-611) the DHCP proxy server need be the selected R3 Move Mode of DHCP proxy server through the R3 Move Mode at the specific related functional entities terminal of R3_Mobility_Context message informing network;
612-613) after obtaining home address through the DHCP agreement, home address is forwarded to the mobile IP agent client in the access business network through HOA_Address primitive;
614-619) the mobile IP registration stage: receive when the PMIP agent client after the home address at terminal that the PMIP agent client can outwards be acted on behalf of and send a mobile IPv 4 registration message and before last dhcp message is mutual, accomplish the mobile IPv 4 registration;
Foreign Agent judges that according to the mode of receiving registration message the R3 pattern at terminal is PMIPv4 after receiving mobile IP login information, be defined as R3 Move Mode from the terminal to network that do not notify this moment;
620-621) DHCP acknowledgment phase: after the mobile IPv 4 registration was accomplished, DHCP ack message just can be accompanied by home address and send to the terminal.
Technique scheme, described step b) specifically comprises following substep:
701) access authentication stage: in access authentication stage, the hometown AAA server under the user can issue hometown-agent-address and authentication and authorization charging association key in access authentication message;
702) after the Business Stream at the data link in the access business network and terminal or terminal is bound, will trigger the CMIP mode terminal and begin registration;
703) after after new access business network data link is set up, its Care-of Address of terminal broadcast that Foreign Agent will be in network;
704) terminal receives that the Care-of Address of Foreign Agent broadcasting just sends the mobile IPv 4 registration message later on to Foreign Agent, and is forwarded to home agent by Foreign Agent;
If the mobile IPv 4 protocol stack is supported at the terminal at this moment, so just can not send the DHCP request, only can send mobile IP signaling and remove to obtain its home address;
705-706) Foreign Agent is according to receiving that the mode of registration message judges that the Move Mode of terminal R3 is CMIPv4, and the R3 Move Mode through the specific related functional entities terminal of R3_Mobility_Context message informing network is the selected R3 Move Mode of Foreign Agent;
707-709) when the terminal attaching aaa server receive by home agent send carry the access request message of MN-HA attribute the time; Aaa server need be responded one through inserting message; The MN-HA that wherein comprises encryption shares key; If comprised the cell that dynamically obtains home agent and IP configuration information in the access request message, aaa server also need return the relevant IP configuration information in address and terminal of home agent;
710) home agent is transmitted the mobile IPv 4 registration reply message and is given Foreign Agent;
711) the mobile IPv 4 registration reply message is forwarded to the terminal.
The concrete principle of this motion is that the connection at the terminal under the WiMAX network environment is set up in the process, and increasing the method that makes the WiMAX access business network judge terminal R 3 mobile mode provides the support to the access business network of supporting PMIPv4 pattern and CMIPv4 pattern simultaneously.Through making Foreign Agent can judge the R3 Move Mode at terminal based on LiNUX socket communication mechanism, and take under two kinds of patterns respectively following of PMIPv4 pattern by the DHCP proxy server notification and under the CMIPv4 pattern by the method for Foreign Agent informing network terminal R 3 mobile mode.
In view of this; The present invention proposes a kind of method; Can solve in the WiMAX network of supporting PMIPv4 pattern and CMIPv4 pattern at the same time, Foreign Agent can be judged the method for the R3 Move Mode at terminal, and the R3 Move Mode at informing network terminal that can be correct.
For this reason, the present invention proposes a kind of technical scheme and solves the method that Foreign Agent can be judged the R3 Move Mode at terminal.
Simultaneously, the present invention proposes another kind of technical scheme and makes the correct notice of the R3 Move Mode at terminal give the WiMAX access business network.
For solving above-mentioned first technical problem, the objective of the invention is to realize through following technical scheme:
A kind of Foreign Agent is judged the mechanism of the R3 Move Mode at terminal, and this method may further comprise the steps:
A. under the situation of PMIPv4 mode terminal initial network entry; This moment Foreign Agent and mobile IP customer terminal and put in an ASN entity, mobile IP customer terminal is through taking to send a request for registration to Foreign Agent based on the mode of the local socket communication of Linux at this moment;
B. under the situation of CMIPv4 mode terminal initial network entry, the terminal still sends a request for registration to Foreign Agent through the mode based on the network socket communication of Linux;
C. when Foreign Agent is received the mobile IP login request message from local socket, judge that the R3 Move Mode at terminal is the PMIPv4 pattern;
D. when Foreign Agent receives the mobile IP login information of automatic network socket, judge that the R3 Move Mode at terminal is the CMIPv4 pattern.
For solving above-mentioned second technical problem, the objective of the invention is to realize through following technical scheme:
A kind of method to WiMAX access business network notice terminal R 3 mobile mode, this method may further comprise the steps:
A. when the terminal was inserted with the CMIPv4 pattern, it was the CMIPv4 pattern that Foreign Agent is judged it to the mobile IP message of receiving, the R3 Move Mode to network functional entity notice terminal is CMIPv4;
B. when the terminal is inserted with the PMIPv4 pattern; The DHCP proxy server is PMIPv4 to the R3 Move Mode at network functional entity notice terminal; When the R3 Move Mode of on Foreign Agent, judging simultaneously the terminal was PMIPv4, Foreign Agent was to the R3 Move Mode at network functional entity notice terminal.
The invention has the advantages that:
1, Foreign Agent is judged the R3 Move Mode at terminal based on the mode of LiNUX socket through adopting, and makes network need not increase extra signaling, and is easy to operate.
2, through adopting under two kinds of patterns, make network can correctly judge the R3 Move Mode at terminal, thereby improve the network support of network the terminal of dual mode by the different entities mode of informing network functional entity respectively.
Description of drawings
Fig. 1 is traditional mobile IP architecture sketch map;
Fig. 2 is existing WiMAX network reference model;
Fig. 3 is terminal connection building process figure under the prior art PMIPv4 pattern;
Fig. 4 is terminal connection building process figure under the prior art CMIPv4 pattern;
Fig. 5 is that Foreign Agent of the present invention is judged terminal R3 move mode schematic diagram;
Fig. 6 is the present invention terminal connection building process figure under the PMIPv4 pattern of the method for notice terminal, WiMAX terminal R3 pattern;
Fig. 7 is the present invention terminal connection building process figure under the CMIPv4 pattern of the method for notice terminal, WiMAX terminal R3 pattern.
Embodiment
Below in conjunction with accompanying drawing the present invention is further specified.
The connection that concrete principle of the present invention is the terminal under the WiMAX network environment is set up in the process, and increasing the method that makes the WiMAX access business network judge terminal R 3 mobile mode provides the support to the access business network of supporting PMIPv4 pattern and CMIPv4 pattern simultaneously.Through making Foreign Agent can judge the R3 Move Mode at terminal based on LiNUX socket communication mechanism, and take under two kinds of patterns respectively following of PMIPv4 pattern by the DHCP proxy server notification and under the CMIPv4 pattern by the method for Foreign Agent informing network terminal R 3 mobile mode.
Below in conjunction with accompanying drawing and specific embodiment the present invention is done to describe further.
Based on above-mentioned principle, the present invention realizes that the method for Foreign Agent judgement terminal R 3 mobile mode is as shown in Figure 5, specifically may further comprise the steps:
The access network authentication is carried out at step 501 terminal.
If the R3 pattern at step 502-a terminal is CMIPv4, mobile IP registration is just directly carried out in the terminal so, and the terminal is adopted and sent registration message to Foreign Agent based on the network socket mode of LiNUX simultaneously;
If the R3 pattern at step 502-b terminal is PMIPv4; DHCP discover message can be sent in the terminal so; After the DHCP proxy server is intercepted and captured discover message; The mobile IP agent client that triggers in the access business network is carried out mobile IP registration, and the mobile IP agent client is sent registration message to Foreign Agent through the local socket mode based on LiNUX simultaneously.
Step 503 Foreign Agent receives registration message and judges according to the source mode of message, if registration message receives that with network socket mode the R3 Move Mode of so just judging the terminal is CMIPv4; If registration message receives that with local socket mode the R3 Move Mode of so just judging the terminal is PMIPv4.
Through above method, can be so that Foreign Agent can be judged the R3 Move Mode at terminal according to two kinds of different received mechanism, and do not have extra signaling consumption, easy to operate.
Further, the present invention divides PMIPv4 pattern and CMIPv4 pattern to introduce respectively realizing to the method for network notice terminal R 3 mobile mode.
The flow process of the present invention under the PMIPv4 pattern of WiMAX network notice R3 Move Mode is as shown in Figure 6, specifically may further comprise the steps:
Step 601 access authentication stage: in access authentication stage, the hometown AAA server under the terminal can issue hometown-agent-address, Certificate Authority integration association key, Proxy Mobile IPv4 through access authentication message and connect and set up association key and Dynamic Host Configuration Protocol server address.
The step 602DHCP server configures stage: will obtain the terminal at this stage D HCP acting server and can obtain the Dynamic Host Configuration Protocol server address of home address or directly obtain home address.
Step 603-609IP address assignment and configuration phase: in successful authentication with after authorizing, set up after the data link between BS and the ASN, the terminal can lead to newly-established data link and send a DHCP discover message.
Step 610-611DHCP acting server need be the selected R3 Move Mode of DHCP proxy server through the R3 Move Mode at the specific related functional entities terminal of R3_Mobility_Context message informing network.
Step 612-613 is after obtaining home address through the DHCP agreement, and home address is forwarded to the mobile IP agent client in the access business network through HOA_Address primitive.
The step 614-619 mobile IP registration stage: receive when the PMIP agent client after the home address at terminal that the PMIP agent client can outwards be acted on behalf of and send a mobile IPv 4 registration message and before last dhcp message is mutual, accomplish the mobile IPv 4 registration.
Foreign Agent judges that according to the mode of receiving registration message the R3 pattern at terminal is PMIPv4 after receiving mobile IP login information, be defined as R3 Move Mode from the terminal to network that do not notify this moment.
Step 620-621DHCP acknowledgment phase: after the mobile IPv 4 registration was accomplished, DHCP ack message just can be accompanied by home address and send to the terminal.
The flow process of the present invention under the CMIPv4 pattern of WiMAX network notice R3 Move Mode is as shown in Figure 7:
Step 701 access authentication stage: in access authentication stage, the hometown AAA server under the user can issue hometown-agent-address, authentication and authorization charging association key in access authentication message.
Step 702 will trigger the CMIP mode terminal and begin registration after the Business Stream at the data link in the access business network and terminal or terminal is bound.
Step 703 after new access business network data link is set up after, its Care-of Address of terminal broadcast that Foreign Agent will be in network.
Step 704 terminal receives that the Care-of Address of Foreign Agent broadcasting just sends the mobile IPv 4 registration message later on to Foreign Agent, and is forwarded to home agent by Foreign Agent.
If the mobile IPv 4 protocol stack is supported at the terminal at this moment, so just can not send the DHCP request, only can send mobile IP signaling and remove to obtain its home address.
Step 705-706 Foreign Agent is according to receiving that the mode of registration message judges that terminal R3 and Move Mode are CMIPv4, and the R3 Move Mode through the specific related functional entities terminal of R3_Mobility_Context message informing network of network is the R3 Move Mode that Foreign Agent is selected.
Step 707-709 when the terminal attaching aaa server receive by home agent send carry the access request message of MN-HA attribute the time, aaa server need be responded one through inserting message, the MN-HA that wherein comprises encryption shares key.If comprised the cell that dynamically obtains home agent and IP configuration information in the access request message, aaa server also need return the relevant IP configuration information in address and terminal of home agent.
Step 710 home agent is transmitted the mobile IPv 4 registration reply message and is given Foreign Agent.
Step 711 mobile IPv 4 registration reply message is forwarded to the terminal.
Can realize that through the above mode no matter the R3 move mode at terminal is CMIPv4 or PMIPv4; Correct notice is carried out to the access network related functional entities in the capital, has guaranteed to support simultaneously the normal operation of the WiMAX access business network of CMIPv4 pattern and PMIPv4 pattern.
It should be noted last that above embodiment is only unrestricted in order to technical scheme of the present invention to be described.Although the present invention is specified with reference to embodiment; Those of ordinary skill in the art is to be understood that; Technical scheme of the present invention is made amendment or is equal to replacement, do not break away from the spirit and scope of the present invention, it all should be encompassed in the middle of the claim scope of the utility model.
Claims (3)
1. a WiMAX network is used to judge and notify the method for terminal R 3 mobile mode; This method makes Foreign Agent can judge the Move Mode of the R3 at terminal; And Move Mode that can informing network terminal R3, described judgement terminal R 3 mobile mode comprises following steps:
501) the access network authentication is carried out at the terminal;
502) if the R3 pattern at terminal is CMIPv4, mobile IP registration is just directly carried out in the terminal so, and the terminal is adopted and sent registration message to Foreign Agent based on the network socket mode of LiNUX simultaneously; If the R3 pattern at terminal is PMIPv4; DHCP discover message can be sent in the terminal so; After the DHCP proxy server is intercepted and captured discover message; The mobile IP agent client that triggers in the access business network is carried out mobile IP registration, and the mobile IP agent client is sent registration message to Foreign Agent through the local socket mode based on LiNUX simultaneously;
503) Foreign Agent receives registration message and judges according to the source of message, if registration message receives that with network socket mode the R3 Move Mode of so just judging the terminal is CMIPv4; If registration message receives that with local socket mode the R3 Move Mode of so just judging the terminal is PMIPv4;
Described informing network terminal R 3 mobile mode comprises following steps:
A. when the terminal was inserted with the CMIPv4 pattern, it was the CMIPv4 pattern that Foreign Agent is judged it to the mobile IP message of receiving, the R3 Move Mode to network functional entity notice terminal is CMIPv4;
B. when the terminal is inserted with the PMIPv4 pattern; The DHCP proxy server is PMIPv4 to the R3 Move Mode at network functional entity notice terminal; When the R3 Move Mode of on Foreign Agent, judging simultaneously the terminal was PMIPv4, Foreign Agent was to the R3 Move Mode at network functional entity notice terminal;
Wherein, described R3 Move Mode comprises: client mobile IP (CMIP) mode and proxy-mobile IP (PMIP) mode.
2. WiMAX network according to claim 1 is used to judge and notify the method for terminal R 3 mobile mode, it is characterized in that, when the terminal was inserted with the PMIPv4 pattern, this method comprised following concrete steps:
601) access authentication stage: in access authentication stage, the hometown AAA server under the terminal can issue hometown-agent-address, Certificate Authority integration association key, Proxy Mobile IPv4 through access authentication message and connect and set up association key and Dynamic Host Configuration Protocol server address;
602) Dynamic Host Configuration Protocol server configuration phase: obtain the terminal at this stage D HCP acting server and can obtain the Dynamic Host Configuration Protocol server address of home address or directly obtain home address;
603-609) IP address assignment and configuration phase: in successful authentication with after authorizing, set up after the data link between BS and the ASN, a DHCP discover message can be sent through newly-established data link in the terminal;
610-611) the DHCP proxy server need be the selected R3 Move Mode of DHCP proxy server through the R3 Move Mode at the specific related functional entities terminal of R3_Mobility_Context message informing network;
612-613) after obtaining home address through the DHCP agreement, home address is forwarded to the mobile IP agent client in the access business network through HOA_Address primitive;
614-619) the mobile IP registration stage: receive when the PMIP agent client after the home address at terminal that the PMIP agent client can outwards be acted on behalf of and send a mobile IPv 4 registration message and before last dhcp message is mutual, accomplish the mobile IPv 4 registration;
Foreign Agent judges that according to the mode of receiving registration message the R3 pattern at terminal is PMIPv4 after receiving mobile IP login information, be defined as R3 Move Mode from the terminal to network that do not notify this moment;
620-621) DHCP acknowledgment phase: after the mobile IPv 4 registration was accomplished, DHCP ack message just can be accompanied by home address and send to the terminal.
3. WiMAX network according to claim 1 is used to judge and notify the method for terminal R 3 mobile mode, it is characterized in that, when the terminal was inserted with the CMIPv4 pattern, this method comprised following concrete steps:
701) access authentication stage: in access authentication stage, the hometown AAA server under the user can issue hometown-agent-address and authentication and authorization charging association key in access authentication message;
702), the Business Stream at the data link in the access business network and terminal or terminal will triggering terminal begin registration after binding with the CMIP pattern;
703) after after new access business network data link is set up, its Care-of Address of terminal broadcast that Foreign Agent will be in network;
704) terminal receives that the Care-of Address of Foreign Agent broadcasting just sends the mobile IPv 4 registration message later on to Foreign Agent, and is forwarded to home agent by Foreign Agent;
If the mobile IPv 4 protocol stack is supported at the terminal at this moment, so just can not send the DHCP request, only can send mobile IP signaling and remove to obtain its home address;
705-706) Foreign Agent is according to receiving that the mode of registration message judges that the Move Mode of terminal R3 is CMIPv4, and the R3 Move Mode through the specific related functional entities terminal of R3_Mobility_Context message informing network is the selected R3 Move Mode of Foreign Agent;
707-709) when the terminal attaching aaa server receive by home agent send carry the access request message of MN-HA attribute the time; Aaa server need be responded one through inserting message; The MN-HA that wherein comprises encryption shares key; If comprised the cell that dynamically obtains home agent and IP configuration information in the access request message, aaa server also need return the relevant IP configuration information in address and terminal of home agent;
710) home agent is transmitted the mobile IPv 4 registration reply message and is given Foreign Agent;
711) the mobile IPv 4 registration reply message is forwarded to the terminal.
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| CN101043717A (en) * | 2006-03-24 | 2007-09-26 | 华为技术有限公司 | Method for notifying terminal R3 mobile mode to WiMAX network |
| CN101064884A (en) * | 2006-04-25 | 2007-10-31 | 华为技术有限公司 | Method for processing message based on terminal R3 mobile mode |
| CN101098347A (en) * | 2006-06-28 | 2008-01-02 | 华为技术有限公司 | Method of assigning IP address for subscriber terminal |
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| CN101043717A (en) * | 2006-03-24 | 2007-09-26 | 华为技术有限公司 | Method for notifying terminal R3 mobile mode to WiMAX network |
| CN101064884A (en) * | 2006-04-25 | 2007-10-31 | 华为技术有限公司 | Method for processing message based on terminal R3 mobile mode |
| CN101098347A (en) * | 2006-06-28 | 2008-01-02 | 华为技术有限公司 | Method of assigning IP address for subscriber terminal |
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