CN1878103A - Method for WiMAX network accessing Internet protocol multimedia subdomain - Google Patents
Method for WiMAX network accessing Internet protocol multimedia subdomain Download PDFInfo
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- CN1878103A CN1878103A CN 200510075241 CN200510075241A CN1878103A CN 1878103 A CN1878103 A CN 1878103A CN 200510075241 CN200510075241 CN 200510075241 CN 200510075241 A CN200510075241 A CN 200510075241A CN 1878103 A CN1878103 A CN 1878103A
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Abstract
The invention discloses a switching method of WiMAX network in the IMS region to store PDG address information of 3G network in the realm name server DNS of WiMAX network, which comprises the following steps: A. UE switches in the WiMAX network to interact DNS of WiMAX network, which obtains the PDG address information to provide service; B. UE obtains address information of P-CSCF solid in the IMD region through WiMAX network and PDG; C. UE interacts S-CSCF solid of IMS through WiMAX network, PDG and P-CSCF, which builds conversation connection between UE and IMS region. The invention can realize WiMAX network to switch in the IMS region, which is benefit to spread WiMAX technology.
Description
Technical field
The present invention relates to the WiMAX access technology, relate in particular to the method for a kind of global inserting of microwave interoperability (WiMAX) network insertion internet protocol multi-media subdomain (IMS).
Background technology
According to 3GPP R5 agreement regulation, universal mobile telecommunications system (UMTS) core net (CN) is from being divided into circuit domain (CS), packet domain (PS) and IMS territory in logic.Wherein, the CS territory is by forming such as mobile switching centre's entities such as (MSC), and being responsible for the user provides Circuit Service or provide relevant signaling to connect; The PS territory is responsible for the user multicomponent data business is provided by forming such as service universal grouping wireless business supporting node (SGSN) and ggsn (GGSN); The IMS territory with the PS territory as bearer network, it is a kind of standardized multimedia service solution that on packet switched bearer, provides, it is made up of home location server (HSS) and CSCF (CSCF) entity etc., realize the session connection and the transfer of data of Internet protocol (IP) multimedia service, realize such as audio frequency with packet domain, video, real-time and the non real-time multimedia service of text etc., realize the target that voice service is moved to the broadband from the arrowband, and, be convenient to the realization of new business for IP multimedia application from now on provides a kind of general network architecture.
As shown in Figure 1, in the IMS framework of R5 agreement regulation, main functional entity comprises: CSCF entity, break-through point gateway control function (BGCF) entity, media gateway controlling (MGCF) entity, Multimedia Resource Function control (MRFC) entity, IMS medium gateway function (IMS-MGW) entity, Multimedia Resource Function are handled (MRFP) entity, Subscription Locator Function (SLF) entity and HSS entity etc.Wherein the function of each entity is as follows:
1, CSCF entity: comprise proxy CSCF (P-CSCF), serving CSCF (S-CSCF) and inquire three types of CSCF (I-CSCF) etc.Wherein, the P-CSCF entity be among the IMS with first tie point of user, realize such as multimedia session management functions such as session foundation, change and terminations by session initiation protocol (SIP) between subscriber equipment (UE) and the P-CSCF entity, and the P-CSCF entity also can provide user agent (UA) function, promptly interrupts under abnormal conditions or the independent SIP of generation session; The S-CSCF entity is in the control core status in the IMS territory, be responsible for UE is carried out register and authentication and session control, execution is at calling terminal and called end IMS user's basic session routing function, and according to the IMS triggering rule that the user contracts, the value-added service route that proceeds to certificate server (AS) when condition satisfies triggers and professional control alternately; The I-CSCF entity class is similar to the critical point node of IMS, provides between the user's service node distribution of this territory, routing inquiry and IMS territory topology function such as to hide.
2, BGCF entity:, be the calling selection MGCF entity of IMS territory, thereby realize obtaining automatically of MGCF route to PSTN (PSTN)/CS territory according to configuration of intercommunication rule or called number analysis.
3, MGCF entity: realize the mutual of the middle CS territory of IMS core chain of command and PSTN or public land mobile network (PLMN), support protocol interaction and the call intercommunication of integrated service quality network users part (ISUP)/BICC (with the call control protocol of bearer independent) and SIP, control IMS-MGW entity is finished the real-time conversion of user's face RTP (RTP) in the TDM carrying and IMS territory in PSTN or the CS territory.
4, MRFC entity: the media resource on the control MRFP entity, resolve SIP resource control command from other S-CSCF entities and AS, be converted to the corresponding control command of MRFP and produce corresponding charge information.
5, IMS-MGW entity: finish user's face width arrowband bearing interconnection and necessary encoding and decoding conversion in IMS and PSTN and the CS territory.
6, MRFP entity: as the network public resource, control is carried with IP user's face between other IMS terminals or the IMS-MGW and is connected, under the control of MRFC entity, provide resource service, for example Media Stream mixing, multimedia messages broadcast, media content dissection process etc.
7, SLF entity: under the situation that has a plurality of HSS entities, set up the HSS domain name that the user contracting data place is provided for the I-CSCF entity in the process in registration and affairs.
8, HSS entity: HSS is the master data base of mobile subscriber in the network, preserves IMS user's CAMEL-Subscription-Information, comprises basic identification, routing iinformation and service profile etc., is positioned at the top layer of IMS domain core net network framework.
In the IMS territory that constitutes by above-mentioned each entity, such as the WiMAX network at interior Access Network by connecting with the P-CSCF entity, realize inserting the purpose in IMS territory, and then can carry out the miscellaneous service that IMS provided.
The WiMAX network is the network of Institute of Electrical and Electric Engineers (IEEE) defined in the IEEE802.16 standard of promulgation in December calendar year 2001, and being used for provides last kilometer WiMAX to insert at metropolitan area network.The transmission speed of WiMAX network can reach 70Mbps, and coverage can reach 50 kilometers.This network both can be connected to the Internet with portable or mobile subscriber by the WiMAX access technology, also environment such as company and family can be linked to the wired backbone circuit, can also use as the focus of wireless lan (wlan) and the base station back haul link of the second generation (2G) or the third generation (3G) mobile communication system.
Though above-mentioned WiMAX network has so superior performance, owing to only stipulated the physical layer (PHY) and the media access control layer (MAC) of WiMAX network in 802.16 standards, and do not stipulate the method for WiMAX network insertion core network IMS domain.At present, the user of WiMAX network can't enjoy the miscellaneous service that the IMS territory provides, and operator also can't obtain interests from above-mentioned user.Therefore, can't realize the seamless covering of user oriented mobile communications network by the WiMAX network, the enthusiasm of operator's structure WiMAX network is not high simultaneously, is unprofitable to quicken the popularization of WiMAX technology.
Summary of the invention
In view of this, the object of the present invention is to provide the method in WiMAX network insertion IMS territory, can make the user pass through the WiMAX network insertion in the IMS territory.
For achieving the above object, the invention provides the method in a kind of WiMAX network insertion IMS territory, store the address information of the packet data gateway PDG of third generation 3G network in advance in the domain name server (DNS) of WiMAX network, this method may further comprise the steps:
A. after user equipment (UE) inserts the WiMAX network, mutual with the DNS of WiMAX network, obtain the address information that the packet data gateway of service PDG is provided;
B.UE obtains the address information of Proxy Call Session Control Function P-CSCF entity in the IMS territory by WiMAX network and described PDG;
C.UE is by WiMAX network, described PDG and described P-CSCF, carries out setting up the session connection between this UE and the IMS territory alternately with the service call conversation control function S-CSCF entity in IMS territory.
Wherein, the method for the described user equipment (UE) access of steps A WiMAX network comprises:
A11.UE is connected in the WiMAX network by BS;
A12.UE obtains the local accessing Internet protocol IP address of this UE in the WiMAX network by BS from ASN GW, and with the IP address that gets access to as source address, be routed in the WiMAX network.
Wherein, between steps A 11 and the steps A 12, this method further comprises:
Certificate server AS carries out access authentication to UE, and judges whether access authentication is successful, if then continue to carry out described steps A 12; Otherwise, finish the flow process in this access IMS territory.
Wherein, described AS to the method that UE carries out access authentication is;
UE is at first by BS and ASN GW, the user ID of self is submitted to AS, and AS obtains authentication collection and user signing contract information again from home location server HSS, and according to the user ID that receives and authentication collection and CAMEL-Subscription-Information, this UE is carried out access authentication, draw the access authentication result;
Describedly judge whether successful method is access authentication:
If the access authentication result is successfully, then judge the access authentication success; Otherwise, judge the access authentication failure.
Wherein, the described method of obtaining the address information of the PDG that service is provided of steps A is: UE is by base station BS and IAD ASN GW in the WiMAX network, and is mutual with the DNS of WiMAX network, obtains the address information that the packet data gateway of service PDG is provided.
Wherein, the described method of obtaining the address information of the PDG that service is provided comprises:
A21.UE sends to the domain name of PDG the DNS of WiMAX network by BS and ASN GW;
The DNS of A22.WiMAX network is an index with the PDG domain name that receives, retrieve in the corresponding relation between PDG domain name of being preserved and PDG address information, determine the pairing PDG address information of this PDG domain name, and, the PDG address information that finds is returned to UE by BS and ASN GW.
Wherein, after the described steps A 22, this method further comprises:
UE is according to the address information of the PDG that gets access to, sets up the secure tunnel between self and the described PDG.
Wherein, the method for the address information of the described P-CSCF of the obtaining entity of step B is: UE inserts described PDG by BS and ASN GW in the WiMAX network, obtains the address information of described P-CSCF entity.
Wherein, the method for the address information of P-CSCF entity comprises in the described IMS of the obtaining territory:
B1.UE is by BS, ASN GW and described PDG, and the request Dynamic Host Configuration Protocol server distributes the P-CSCF domain name for this UE, and Dynamic Host Configuration Protocol server by PDG, ASN GW and BS, returns to UE with the tabulation of P-CSCF domain name according to the request that receives;
B2.UE disposes according to self, selected employed P-CSCF domain name from the P-CSCF domain name tabulation that receives, and by BS, ASN GW and described PDG, selected P-CSCF domain name is sent to the DNS of 3G network, ask this DNS that the address information of P-CSCF is provided;
The P-CSCF domain name that the DNS of B3.3G network receives is an index, retrieves in the corresponding relation of P-CSCF domain name of being preserved and P-CSCF address information, finds the address information of corresponding P-CSCF, and by described PDG, ASN GW and BS, returns to UE.
Wherein, after the described step B3, this method further comprises:
UE is according to the P-CSCF address information that gets access to, sets up the secure tunnel between self and described P-CSCF.
Wherein, when step B1 described request Dynamic Host Configuration Protocol server distributed the P-CSCF domain name for this UE, this method further comprised:
The request Dynamic Host Configuration Protocol server distributes remote ip address for this UE;
Step B1 is described when P-CSCF domain name tabulation is returned to UE, and this method further comprises:
Dynamic Host Configuration Protocol server for the remote ip address that this UE distributes passes through PDG, ASN GW and BS, is returned to UE.
Wherein, the method for the session connection between described UE of foundation of step C and the IMS territory comprises:
C1.UE is by BS, ASN GW, PDG and P-CSCF, and self user ID is sent to S-CSCF, and user's registration is carried out in request, after S-CSCF receives the request of UE, indicates to UE and to receive user's register requirement;
C2.S-CSCF sends to HSS with the UE user ID that receives, identity and Authority Verification are carried out in request, HSS is according to the user ID and identity legitimacy information of self preserving and the user right information that receive, this UE is verified, and identity and Authority Verification result are returned to S-CSCF;
C3. judge whether identity and Authority Verification result are success, if, execution in step C4 then, otherwise, the flow process in this access IMS territory finished;
C4.S-CSCF indicates by identity and Authority Verification to UE, and UE sets up the session connection between this UE and the IMS territory again by mutual with S-CSCF.
Wherein, the address information of described PDG is: the IP address of PDG.
Wherein, the address information of described P-CSCF is: the IP address of P-CSCF.
Use the present invention, can make the WiMAX network insertion in the IMS territory.Particularly, the present invention has following beneficial effect:
1. UE carries the session connection of IMS related service data again by the IP address of progressively definite PDG of WiMAX network and P-CSCF among the present invention between foundation and the IMS territory, thereby has realized that WiMAX inserts the purpose in IMS territory.In addition, because operator can obtain profit from WiMAX user, therefore improved operator and made up the enthusiasm of WiMAX network, thereby helped the popularization of WiMAX technology.
2. the present invention is all setting up secure tunnel between UE and the PDG and between UE and the P-CSCF, thereby after making that the WiMAX network successfully is linked into the IMS territory, Multimedia session between UE and the IMS territory transmits based on secure tunnel, has guaranteed safety of data transmission and reliability.
3. the present invention utilizes the HSS in the 3G network to preserve user's identity information and authority information, helps the unified charging of 3G network and WiMAX network, the unified maintenance and unified operation.
Description of drawings
Fig. 1 is the network architecture diagram in existing IMS territory;
Fig. 2 is the network architecture diagram in WiMAX network insertion IMS territory in the embodiment of the invention;
Fig. 3 is the method flow diagram in WiMAX network insertion IMS territory in the embodiment of the invention.
Embodiment
For making purpose of the present invention, technical scheme clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in further detail.
The present invention is the method in a kind of WiMAX network insertion IMS territory, stores the address information of the packet data gateway PDG of third generation 3G network in advance in the domain name server (DNS) of WiMAX network, and this method may further comprise the steps:
A. after user equipment (UE) inserts the WiMAX network, mutual with the DNS of WiMAX network, obtain the address information that the packet data gateway of service PDG is provided;
B.UE obtains the address information of Proxy Call Session Control Function P-CSCF entity in the IMS territory by WiMAX network and described PDG;
C.UE is by WiMAX network, described PDG and described P-CSCF, carries out setting up the session connection between this UE and the IMS territory alternately with the service call conversation control function S-CSCF entity in IMS territory.
Be example as the IP address of the address information of PDG, P-CSCF as the address information of P-CSCF with the IP address of PDG below, the system architecture and the idiographic flow in WiMAX network insertion IMS territory is described.
Particularly, as embodiments of the invention, adopt the network architecture shown in Figure 2 to realize the purpose of WiMAX network insertion to the IMS territory.Wherein, the IMS territory mainly comprises P-CSCF, S-CSCF and I-CSCF entity, be arranged in the 3G network of entities such as comprising AS, HSS, DNS, DHCP and PDG, and IMS passes through PDG in the territory, DNS and DHCP entity is mutual in realization and the 3G network, and by HSS, the user of the Access Network that links to each other with 3G network is carried out authentication; The WiMAX network mainly comprises BS, ASN GW and DNS entity, and ASN GW is by the AS in the 3G network, realizes mutual with the HSS entity, and by PDG, realize with 3G network in DNS, DHCP and IMS and mutual.In the above-mentioned network architecture, the concrete function of each entity is as follows: BS is responsible for UE WiMAX is provided wireless access; ASN GW is responsible for carrying out the RRM, mobile management of WiMAX network and the statistics and authentication mandate relevant information etc. of chargeing; AS and HSS are responsible for the UE in the WiMAX network is authenticated, authorizes, charges; Preserve the corresponding relation of the IP address of the corresponding relation of IP address of PDG domain name and PDG and P-CSCF domain name and P-CSCF among the DNS, and according to the domain name that receives, for UE provides corresponding PDG or the IP address of P-CSCF; The data that PDG is responsible for utilizing the Internet protocol security interface differential techniques such as (IPsec) to receive and send are carried out safe handling, provide Dynamic Host Configuration Protocol (DHCP) relaying (Relay) function, so that UE finds P-CSCF by PDG; Dynamic Host Configuration Protocol server is responsible for UE and distributes remote ip address and P-CSCF domain name.
As shown in Figure 3, the method in WiMAX network insertion IMS territory may further comprise the steps in the present embodiment:
Step 301.UE is connected in the WiMAX network by BS.
In this step, UE matches with BS, carry out physics synchronously, when adjusting partially, frequency deviation and operations such as transmitting power and capability negotiation, thereby be connected in the WiMAX network.
Step 302.UE submits to AS by BS and ASN GW with the user ID of self, and AS carries out access authentication to UE, and the result returns to UE with access authentication; Judge whether this access authentication result is success, if then execution in step 303, otherwise, finish this access process.
In this step, UE at first by BS and ASN GW, will submit to AS such as user ID such as phone numbers; AS obtains authentication collection and user signing contract information again from HSS, and according to the user ID that receives and authentication collection and CAMEL-Subscription-Information, this UE is carried out access authentication; Then, AS is by ASN GW and BS, and the result returns to UE with access authentication.
And,, then show to allow this UE to use the WiMAX network if the access authentication result is successfully; Otherwise, show that this UE haves no right to use the WiMAX network.
Step 303.UE obtains this UE this locality in the WiMAX network and inserts the IP address by BS from ASN GW, and with the IP address that gets access to as source address, be routed in the WiMAX network.
In this step, UE at first asks ASN GW for self distributing the local IP of access address; Then, ASN GW inserts the IP address with this locality of this UE and returns to UE according to the request that receives, so that UE in after this relevant with WiMAX Network message, inserts the IP address with this locality that obtains and uses as source address, is linked in the WiMAX network.
So far, UE has finished all processes that is linked into the WiMAX network, and after this UE can carry out alternately with the WiMAX network, realizes radio communication.
Step 304～305.UE obtains the IP address of the PDG that service is provided by BS and ASN GW from the DNS of WiMAX network, and according to the IP address that is obtained, sets up the secure tunnel between UE and the PDG.
In order to realize being connected of UE and PDG, present embodiment is preserved the IP address of the PDG that service is provided in advance in the DNS of WiMAX network.UE obtains the method for the IP address of PDG and is herein: UE sends to the domain name of PDG the DNS of WiMAX network at first by BS and ASN GW; The DNS of WiMAX network is an index with the PDG domain name that receives, between the IP address of PDG domain name of being preserved and PDG, retrieve in the corresponding relation, determine the IP address of the pairing PDG of this PDG domain name, and by BS and ASN GW, the IP address of the PDG that finds is returned to UE.
In addition, the PDG domain name that UE sent herein can adopt multiple mode, for example: MSISDN.realm, MSISDN wherein partly represents the identity of UE, and realm partly represents the territory at PDG place.
After UE obtains the IP address of PDG, according to the IP address that is obtained, the secure tunnel between request PDG foundation and this UE; PDG receives after the request that comes from UE, utilizes such as technology such as IPsec, and the secure tunnel between foundation and this UE, and setting up successfully back notice UE.For example: under the IPsec mode, PDG is by the security parameter between definite and the UE and to operations such as this UE distributed keys, set up secure tunnel,, strengthen the fail safe and the reliability of exchanges data on this secure tunnel so that the data of after this transmitting are carried out safe handling.
Step 306.UE is by BS, ASN GW and PDG, the request Dynamic Host Configuration Protocol server distributes remote ip address and P-CSCF domain name for this UE, Dynamic Host Configuration Protocol server passes through PDG, ASN GW and BS according to the request that receives with remote ip address and the tabulation of P-CSCF domain name, returns to UE.
In this step, UE at first sends to PDG by the request that BS and ASN GW will obtain remote ip address and P-CSCF domain name, and PDG carries out DHCP Relay again, and the request that is about to receive is transmitted to Dynamic Host Configuration Protocol server; Dynamic Host Configuration Protocol server receives after the request that comes from PDG, and remote ip address and the tabulation of P-CSCF domain name that is distributed returned to PDG, and PDG is transmitted to UE again by ASN GW and BS with remote ip address and the tabulation of P-CSCF domain name that is obtained.After UE has obtained the remote ip address of self, then afterwards and in the communication process between the IMS territory, with this remote ip address as with the source address of the professional relevant message in IMS territory; In addition, because UE has obtained the domain name tabulation of P-CSCF, then can in subsequent step, determine the IP address of P-CSCF according to the P-CSCF domain name of from this tabulation, choosing.
Step 307.UE is by BS, ASN GW and PDG, and the P-CSCF domain name is sent to the DNS of 3G network, asks this DNS that the IP address of P-CSCF is provided, and the DNS of 3G network is again by ASN GW and BS, and the IP address of P-CSCF is returned to UE.
In this step, UE at first according to the configuration of self, chooses the P-CSCF domain name from the tabulation that receives, and by BS and ASN GW, the P-CSCF domain name of choosing is sent to the DNS of 3G network, and ask to obtain the IP address of the pairing P-CSCF of this P-CSCF domain name; After the DNS of 3G network received this request, the P-CSCF domain name that provides with UE was an index, retrieves in P-CSCF domain name of being preserved and IP address corresponding relation, found the IP address of corresponding P-CSCF, and returned to UE.
Step 308.UE is according to the IP address of the P-CSCF that receives, sets up the secure tunnel between self and P-CSCF.
In this step, UE by BS, ASN GW and PDG, asks the secure tunnel between P-CSCF foundation and this UE according to the IP address of the P-CSCF that is obtained; P-CSCF receives after the request that comes from UE, utilizes such as technology such as IPsec, and the secure tunnel between foundation and this UE, and after setting up successfully, by PDG, ASN GW and BS notice UE.For example: under the IPsec mode, P-CSCF is by the security parameter between definite and the UE and to operations such as this UE distributed keys, set up secure tunnel,, strengthen the fail safe and the reliability of exchanges data on this secure tunnel so that the data of after this transmitting are carried out safe handling.
Step 309.UE sends to S-CSCF with user ID by BS, ASN GW, PDG and P-CSCF, and user's registration is carried out in request, after S-CSCF receives the request of UE, indicates to UE and to receive user's register requirement.
Step 310.S-CSCF sends to HSS with the UE user ID that receives, and identity and Authority Verification are carried out in request, after HSS finishes checking, will verify that the result returns to S-CSCF; S-CSCF judges whether the checking result who receives is success, if then execution in step 311; Otherwise, finish the flow process in this access IMS territory.
Because the identity legitimacy information and the user right information of preserving UE among the HSS, so S-CSCF at first sends to HSS with the user ID of UE in this step, so that carry out identity and Authority Verification; HSS verifies this UE according to the user ID and identity legitimacy information of self preserving and the user right information that receive, and after checking finishes, checking result successful or failure is returned to S-CSCF.
Step 311.S-CSCF indicates by verifying that UE sets up the session connection between this UE and the IMS territory again by mutual with S-CSCF to UE.
Under identity and Authority Verification case of successful, S-CSCF is by P-CSCF, PDG, ASN GW and BS, and UE is by identity and Authority Verification for notice; UE knows that by after the checking by BS, ASN GW, PDG and P-CSCF, request S-CSCF sets up the session connection between this UE and the IMS territory, so that the business datum between carrying UE and the IMS territory; After S-CSCF receives this request, carry out the foundation of session connection, and after setting up successfully, by P-CSCF, PDG, ASNGW and BS notice UE.
So far, finished in the present embodiment UE by the process in WiMAX network insertion IMS territory.After this, utilize the session connection of above-mentioned foundation, can realize that UE passes through the purpose that the WiMAX network is enjoyed IMS territory business.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being made, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (14)
1, the method for a kind of global inserting of microwave interoperability WiMAX network insertion internet protocol multi-media subdomain IMS, it is characterized in that, store the address information of the packet data gateway PDG of third generation 3G network in advance in the domain name server (DNS) of WiMAX network, this method may further comprise the steps:
A. after user equipment (UE) inserts the WiMAX network, mutual with the DNS of WiMAX network, obtain the address information that the packet data gateway of service PDG is provided;
B.UE obtains the address information of Proxy Call Session Control Function P-CSCF entity in the IMS territory by WiMAX network and described PDG;
C.UE is by WiMAX network, described PDG and described P-CSCF, carries out setting up the session connection between this UE and the IMS territory alternately with the service call conversation control function S-CSCF entity in IMS territory.
2, the method for claim 1 is characterized in that, the method that the described user equipment (UE) of steps A inserts the WiMAX network comprises:
A11.UE is connected in the WiMAX network by BS;
A12.UE obtains the local accessing Internet protocol IP address of this UE in the WiMAX network by BS from ASN GW, and with the IP address that gets access to as source address, be routed in the WiMAX network.
3, method as claimed in claim 2 is characterized in that, between steps A 11 and the steps A 12, this method further comprises:
Certificate server AS carries out access authentication to UE, and judges whether access authentication is successful, if then continue to carry out described steps A 12; Otherwise, finish the flow process in this access IMS territory.
4, method as claimed in claim 3 is characterized in that, described AS to the method that UE carries out access authentication is:
UE is at first by BS and ASN GW, the user ID of self is submitted to AS, and AS obtains authentication collection and user signing contract information again from home location server HSS, and according to the user ID that receives and authentication collection and CAMEL-Subscription-Information, this UE is carried out access authentication, draw the access authentication result;
Describedly judge whether successful method is access authentication:
If the access authentication result is successfully, then judge the access authentication success; Otherwise, judge the access authentication failure.
5, the method for claim 1, it is characterized in that, the described method of obtaining the address information of the PDG that service is provided of steps A is: UE is by base station BS and IAD ASNGW in the WiMAX network, mutual with the DNS of WiMAX network, obtain the address information that the packet data gateway of service PDG is provided.
6, method as claimed in claim 5 is characterized in that, the described method of obtaining the address information of the PDG that service is provided comprises:
A21.UE sends to the domain name of PDG the DNS of WiMAX network by BS and ASN GW;
The DNS of A22.WiMAX network is an index with the PDG domain name that receives, retrieve in the corresponding relation between PDG domain name of being preserved and PDG address information, determine the pairing PDG address information of this PDG domain name, and, the PDG address information that finds is returned to UE by BS and ASN GW.
7, method as claimed in claim 6 is characterized in that, after the described steps A 22, this method further comprises:
UE is according to the address information of the PDG that gets access to, sets up the secure tunnel between self and the described PDG.
8, the method for claim 1 is characterized in that, the method for the address information of the described P-CSCF of the obtaining entity of step B is: UE inserts described PDG by BS and ASN GW in the WiMAX network, obtains the address information of described P-CSCF entity.
9, method as claimed in claim 8 is characterized in that, the method for the address information of P-CSCF entity comprises in the described IMS of the obtaining territory:
B1.UE is by BS, ASN GW and described PDG, and the request Dynamic Host Configuration Protocol server distributes the P-CSCF domain name for this UE, and Dynamic Host Configuration Protocol server by PDG, ASN GW and BS, returns to UE with the tabulation of P-CSCF domain name according to the request that receives;
B2.UE disposes according to self, selected employed P-CSCF domain name from the P-CSCF domain name tabulation that receives, and by BS, ASN GW and described PDG, selected P-CSCF domain name is sent to the DNS of 3G network, ask this DNS that the address information of P-CSCF is provided;
The P-CSCF domain name that the DNS of B3.3G network receives is an index, retrieves in the corresponding relation of P-CSCF domain name of being preserved and P-CSCF address information, finds the address information of corresponding P-CSCF, and by described PDG, ASN GW and BS, returns to UE.
10, method as claimed in claim 9 is characterized in that, after the described step B3, this method further comprises:
UE is according to the P-CSCF address information that gets access to, sets up the secure tunnel between self and described P-CSCF.
11, method as claimed in claim 9 is characterized in that, when step B1 described request Dynamic Host Configuration Protocol server distributed the P-CSCF domain name for this UE, this method further comprised:
The request Dynamic Host Configuration Protocol server distributes remote ip address for this UE;
Step B1 is described when P-CSCF domain name tabulation is returned to UE, and this method further comprises:
Dynamic Host Configuration Protocol server for the remote ip address that this UE distributes passes through PDG, ASN GW and BS, is returned to UE.
12, the method for claim 1 is characterized in that, the method for the session connection between described UE of foundation of step C and the IMS territory comprises:
C1.UE is by BS, ASN GW, PDG and P-CSCF, and self user ID is sent to S-CSCF, and user's registration is carried out in request, after S-CSCF receives the request of UE, indicates to UE and to receive user's register requirement;
C2.S-CSCF sends to HSS with the UE user ID that receives, identity and Authority Verification are carried out in request, HSS is according to the user ID and identity legitimacy information of self preserving and the user right information that receive, this UE is verified, and identity and Authority Verification result are returned to S-CSCF;
C3. judge whether identity and Authority Verification result are success, if, execution in step C4 then, otherwise, the flow process in this access IMS territory finished;
C4.S-CSCF indicates by identity and Authority Verification to UE, and UE sets up the session connection between this UE and the IMS territory again by mutual with S-CSCF.
13, the method for claim 1 is characterized in that, the address information of described PDG is: the IP address of PDG.
14, the method for claim 1 is characterized in that, the address information of described P-CSCF is: the IP address of P-CSCF.
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