CN101925149A - Method, system and access network element for realizing user terminal routing in IMS (IP Multimedia Subsystem) - Google Patents
Method, system and access network element for realizing user terminal routing in IMS (IP Multimedia Subsystem) Download PDFInfo
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- CN101925149A CN101925149A CN2009101079772A CN200910107977A CN101925149A CN 101925149 A CN101925149 A CN 101925149A CN 2009101079772 A CN2009101079772 A CN 2009101079772A CN 200910107977 A CN200910107977 A CN 200910107977A CN 101925149 A CN101925149 A CN 101925149A
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Abstract
The invention discloses a method for realizing user terminal routing in an IMS (IP Multimedia Subsystem). The method comprises the steps of: initiating a register towards the home domain of an access network element by the access network element according to a pre-configured parameter; saving the routing information of the access network element after the register is successful; and carrying out routing by a user terminal accessed into the IMS through the access network element according to the routing information. The embodiment of the invention also discloses an access network element and a system. Through the registering of the access network element to acquire the routing information, the routing of user terminal accessed into the IMS through the access network element, and thus, the invention effectively solves the problems of redundant signaling and overlong service restoring time in the prior art when the access network element carries out registering for users, thereby saving expense on system processing and bandwidith and improving system usability. Meanwhile, the invention can provide individualized service for the users, thereby enhancing the adaptability of the IMS.
Description
Technical field
The present invention relates to communication technical field, realize the method for user terminal route among particularly a kind of IP Multimedia System IMS.
Background technology
(IP Multimedia Subsystem IMS) is the subsystem of finishing multimedia communication in the packet domain to IP Multimedia System.IMS adopts Session initiation Protocol, and (Session initiation protocol SIP) is its session control protocol.
In the IMS network, need terminal support registration could further provide professional usually.Registration has been finished network on the one hand terminal legality has been checked, finishes the binding of terminal address on the other hand, for follow-up business provides routing iinformation.For passing through AGCF (Access Gateway ControlFunction, AGCF) or IP small switch (IP Private Branch Exchange, IP PBX) is linked into the user of IMS, usually because terminal is the POST terminal of traditional circuit domain, itself does not possess the function of registration, thereby needs access network element (as AGCF, PCSCF) proxy user to register.
Prior art provides a kind of access network element to act on behalf of the scheme that each user registers:
When access network element started or restarts, each user who acts on behalf of one by one under this network element registered separately.That is, if 100 users are arranged under this network element, so, this network element is just initiated 100 registrations, thereby guarantees that each user successfully registers at the IMS network.
But, because customer volume is bigger below the access network element, may reach several ten thousand, even it is more, when access network element was acted on behalf of each user and registered separately, the information interaction amount was big, the easy like this registration storm that causes when access network element starts or restarts, perhaps all user registration course is longer, causes the service disconnection of long period.
Summary of the invention
The embodiment of the invention provides the method that realizes the user terminal route among a kind of IP Multimedia System IMS, has solved the problem that exists when the access network element proxy user is registered in the prior art.
The embodiment of the invention provides the method that realizes the user terminal route among a kind of IP Multimedia System IMS, comprising:
Access network element is initiated registration according to pre-configured parameter to the home domain of described access network element;
After succeeding in registration, preserve the routing iinformation of described access network element;
The user terminal that inserts IMS by described access network element carries out route according to described routing iinformation.
The embodiment of the invention also provides a kind of access network element, comprising:
Parameter configuration unit is used to dispose access network element is initiated parameter from registration to its home domain;
Registering unit is used for the parameter according to described parameter configuration unit configuration, initiates registration to the home domain of described access network element;
The unit is preserved in the address, after being used to succeed in registration, preserves the address of the service call conversation control function S-CSCF in the described access network element home domain.
The embodiment of the invention also provides the system that realizes the user terminal route among a kind of IP Multimedia System IMS, comprise access network element that the embodiment of the invention provides and the service call conversation control function S-CSCF in the described access network element home domain, wherein, described S-CSCF is used for described access network element is carried out authentication, after the authentication success, download the user contracting data of described access network element and preserve, and, the contact address and the IMS public identify IMPU of described access network element preserved.
The routing iinformation that obtains when the embodiment of the invention is registered by the use access network element, realization inserts the route of the user terminal of IMS through this access network element, solved the problem that exists when the access network element proxy user is registered in the prior art effectively, thereby saved the expense of system handles, bandwidth, improved system availability.Simultaneously, can also provide differentiated service, strengthen the applicability of IMS system for the user.
Description of drawings
Realize the method flow schematic diagram of user terminal route among the IP Multimedia System IMS that Fig. 1 embodiment of the invention provides;
The registration process schematic diagram that AGCF initiates in Fig. 2 embodiment of the invention;
The caller process schematic diagram of realizing by AGCF when user terminal is as the calling subscriber in Fig. 3 embodiment of the invention;
The called process schematic diagram of realizing by AGCF when user terminal is as the called subscriber in Fig. 4 embodiment of the invention;
The structural representation of the access network element that Fig. 5 embodiment of the invention provides;
Another structural representation of the access network element that Fig. 6 embodiment of the invention provides.
Embodiment
For make embodiment of the invention purpose, technical scheme and advantage clearer, understand, below with reference to accompanying drawing, the embodiment of the invention is described in detail:
Realize among the IP Multimedia System IMS provided by the invention the user terminal route method an embodiment flow process as shown in Figure 1, concrete steps comprise:
Need to prove that above-mentioned access network element is before initiating registration, (Home Subscriber Seryer opens an account in HSS) at the home subscriber server of its home domain.Described pre-configured parameter is specially: at IMS public subscriber identification (the IMSPublic Identity of the local configuration of access network element as a NE User initiation registration, IMPU), the IMS private user identity (IMS Private Identity, IMPI) and password.Wherein, IMPI is an optional parameters.After access network element starts, judge, then, initiate registration to its home domain according to this locality configuration from as unregistered state.This registration process specifically may further comprise the steps:
Step 1001, access network element send register requirement to its home domain, carry pre-configured IMPU in this register requirement;
After service call conversation control function S-CSCF in step 1002, the access network element home domain receives described register requirement, this access network element is carried out authentication;
After the success of step 1003, authentication, described S-CSCF obtains the user contracting data of described access network element and preserves, and returns the response message of described register requirement to described access network element, carries the address of described S-CSCF in the described response message.
Specifically, comprising: S-CSCF preserves the contact address (being the contact address, self the IP address when being the access network element registration) and the IMPU of access network element; Access network element is preserved the address of described S-CSCF.
Wherein, the route of described user terminal specifically comprises: caller route and called route.
When user terminal was the calling subscriber, the route of described user terminal was the caller route, and the realization of this caller route specifically may further comprise the steps:
The request of making a call of step 1041a, the user terminal access network element under it, this access network element is successfully registered;
After step 1042a, described access network element determine that described user terminal is legal, address according to the above-mentioned S-CSCF that preserves, send the invite request message to S-CSCF, carry described IMPU and contact address in this invite request message, wherein, described IMPU is carried in the P-Asserted-Identity header field in the invite request message;
Step 1043a, described S-CSCF judge that according to described IMPU and contact address described user terminal inserts by described access network element, obtain the subscription data of described user terminal, are kept at this locality and offer the follow-up business use.
When user terminal was the called subscriber, the route of described user terminal was called route, and the realization of this called route specifically may further comprise the steps:
Step 1041b, S-CSCF receive the call request from Calling Side, carry called subscriber's IMPU in this call request, and wherein, described IMPU is carried among the Reqest-URI of described call request;
Step 1042b, S-CSCF judge that according to described IMPU called user terminal inserts by described access network element;
Step 1043b, S-CSCF are transmitted to described access network element according to the contact address of the described access network element of preserving with described call request;
Step 1044b, described access network element are issued described called user terminal with described call request.
Need to prove that in the present embodiment, access network element can be AGCF AGCF, Proxy-Call Session Control Function P-CSCF, moving exchanging center MSC or MGCF MGCF.
The method that the embodiment of the invention provides, access network element is registered as NE User according to pre-configured parameter, rather than the proxy user terminal is registered, obtain the routing iinformation of access network element, user terminal carries out route by the routing iinformation of access network element again.Thereby, realization inserts the route of the user terminal of IMS through this access network element, it is big to have solved when the access network element proxy user is registered in the prior art information interaction amount effectively, the problem that when access network element starts or restarts, causes the long period service disconnection easily, thereby saved the expense of system handles, bandwidth, improved system availability.Simultaneously and since user terminal can be separately routing iinformation by access network element carry out route, obtain subscription data, a kind of universal registration mode with respect to the prior art employing can also provide differentiated service for the user, has strengthened the applicability of IMS system.
Below, be example with AGCF, by some concrete application scenarioss, realize among the IP Multimedia System IMS that the embodiment of the invention is provided that the method for user terminal route is described further.
As shown in Figure 2, the registration process schematic diagram of initiating for AGCF.In this example, be configured IMPU, IMPI and the password of initiating registration as a NE User in advance in AGCF this locality, wherein, IMPI is optional.Simultaneously, this NE User is opened an account at HSS.Specifically comprise the steps:
201, after AGCF starts, judge that its state is unregistered NE User, then, AGCF initiates registration according to this locality is pre-configured to its home domain, and register requirement mail to the interrogation-call session control function I-CSCF of home domain, its IMPU is agcf.home.com;
202, I-CSCF initiation subscription authentication (User Authorization, UA) process is from the S-CSCF address of HSS acquisition for the AGCF service;
203, I-CSCF sends to S-CSCF with above-mentioned S-CSCF address correspondence with register requirement;
204, after S-CSCF received register requirement, (MultimediaAuthorization, MA) process from the authorization data that HSS obtains described AGCF, were initiated authentication to this AGCF to initiate the multimedia authentication;
205-206, S-CSCF return 401 message to I-CSCF, and I-CSCF gives AGCF 401 forwards of receiving;
207, AGCF calculates a result according to the password of relevant parameter in described 401 message and local configuration, carries this result of calculation and initiates registration process once more;
208, after I-CSCF receives register requirement, initiate the UA process once more, be retrieved as the S-CSCF address of above-mentioned AGCF service from HSS;
209, I-CSCF is dealt into S-CSCF with above-mentioned S-CSCF address correspondence with register requirement;
2010, after S-CSCF receives register requirement, initiate server-assignment (Server Assignment, SA) process is downloaded the subscription data of this AGCF as NE User from HSS, and preserves the contact address of described subscription data and AGCF and IMPU to local;
2011-2012, S-CSCF return 200 message by I-CSCF to AGCF, and AGCF preserves the state of the IMPU registration of the address of the described S-CSCF that carries in this 200 message and self correspondence.
Need to prove: the IMPU of above-mentioned AGCF can when having many records, can realize the different S-CSCFs services of the user terminal of same AGCF access by different home domain or same home domain by independent table configuration.When many records, AGCF is according to the repeatedly registration of IMPU initiation of configuration, and the address of preserving the S-CSCF of each registration acquisition respectively.
Further, can specify a registration time length for above-mentioned registration process, this registration time length can dispose in AGCF in advance, also can be distributed by network side.Before registration timeout, AGCF initiates registration (that is heavily registration) once more.
As shown in Figure 3, for user terminal during as the calling subscriber, the caller process schematic diagram of initiating by AGCF.In this example, the calling subscriber is signatory at HSS, and this calling subscriber comprises two IMPU, is respectively tel:+861081234567 and sip:+861081234567@agcf.home.com.These two IMPU are same implicit registration group.Specifically comprise the steps:
301, user terminal (supposing that its number the is tel:+861081234567) request of making a call, the AGCF under it makes a call and sets up the setup signaling;
302, after AGCF receives this call request, check whether this user terminal is legal, if it is legal, local S-CSCF address of preserving during then according to registration, initiate the Invite request to the S-CSCF of correspondence, wherein, the P-Asserted-Identity header field in the Invite request message is sip:+861081234567@agcf.home.com, user=phone, the IP address of AGCF when the contact address is registration;
303, after S-CSCF receives this Invite request, the IP address of checking contact among the Invite is registered, obtain the IMPU:agcf.home.com of user's domain name part from P-Asserted-Identity then for the AGCF of this registration, judge that described user terminal belongs to AGCF and inserts, initiate the SA process and obtain the subscription data of tel:+861081234567, and be kept at and locally use as follow-up business;
304, S-CSCF checks that according to the subscription data of the user terminal that obtains (Initial Filter Criteria iFC), triggers corresponding service to initial filter standard or norm.
As shown in Figure 4, for user terminal during as the called subscriber, by the called process schematic diagram of AGCF receipt of call.Specifically comprise the steps:
401, S-CSCF receives the call request from Calling Side, obtains the IMPU of called user terminal from the Requst-URI of this call request, judges that according to the domain name agcf.home.com of user among this IMPU called user terminal is AGCF user;
402, S-CSCF checks the subscription data there is not above-mentioned called user terminal, then initiates the SA process, obtains the subscription data of this called user terminal, and is kept at and locally uses as follow-up business;
403-404, S-CSCF check iFC according to the described subscription data that obtains, and trigger corresponding service;
405, the professional triggering finishes, and the IP address when S-CSCF registers according to AGCF (, the contact address), above-mentioned call request is transmitted to corresponding AGCF;
406, AGCF issues corresponding terminal called with described call request.
With respect to the method that the embodiment of the invention provides, the embodiment of the invention also provides a kind of access network element.As shown in Figure 5, the structural representation of the access network element that provides for the embodiment of the invention comprises: parameter configuration unit 501 is used to dispose access network element is initiated parameter from registration to its home domain; Registering unit 502 is used for the parameter according to described parameter configuration unit 501 configurations, initiates registration to the home domain of described access network element; Unit 503 is preserved in the address, after being used to succeed in registration, preserves the address of the service call conversation control function S-CSCF in the described access network element home domain.Wherein, described parameter comprises the total sign of IMS IMPU, password and the privately owned sign IMPI of IMS.Need to prove that described IMPI is an optional parameters.
As shown in Figure 6, another structural representation of the access network element that provides for the embodiment of the invention, on the basis that comprises parameter configuration unit 501, registering unit 502 and preservation unit 503, address, further comprise: receiving element 601 is used to receive the call request that user terminal is initiated; Transmitting element 602 is used for after the described user terminal of determining the request of making a call is legal, according to the address of the described S-CSCF that preserves, sends the invite request message to described S-CSCF, and described invite request message carries IMPU and contact address.
Need to prove that the access network element that the embodiment of the invention provides is specifically as follows: AGCF AGCF, Proxy-Call Session Control Function P-CSCF, moving exchanging center MSC or MGCF MGCF.
The embodiment of the invention also provides the system that realizes the user terminal route among a kind of IP Multimedia System IMS, comprise access network element that the embodiment of the invention provides and the service call conversation control function S-CSCF in the described access network element home domain, wherein, described S-CSCF is used for described access network element is carried out authentication, after the authentication success, download the user contracting data of described access network element and preserve, and, the contact address and the IMS public identify IMPU of described access network element preserved.
The method, access network element and the system that provide by the embodiment of the invention, access network element is according to pre-configured parameter, register as NE User, rather than the proxy user terminal is registered, obtain the routing iinformation of access network element, user terminal carries out route by the routing iinformation of access network element again.Thereby, realization inserts the route of the user terminal of IMS through this access network element, it is big to have solved when the access network element proxy user is registered in the prior art information interaction amount effectively, the problem that when access network element starts or restarts, causes the long period service disconnection easily, thereby saved the expense of system handles, bandwidth, improved system availability.Simultaneously and since user terminal can be separately routing iinformation by access network element carry out route, obtain subscription data, a kind of universal registration mode with respect to the prior art employing can also provide differentiated service for the user, has strengthened the applicability of IMS system.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential hardware platform, can certainly all implement, but the former is better execution mode under a lot of situation by hardware.Based on such understanding, all or part of can the embodying that technical scheme of the present invention contributes to background technology with the form of software product, this computer software product can be stored in the storage medium, as ROM/RAM, magnetic disc, CD etc., comprise that some instructions are with so that a computer equipment (can be a personal computer, server, the perhaps network equipment etc.) carry out the described method of some part of each embodiment of the present invention or embodiment.
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 (11)
1. realize the method for user terminal route among the IP Multimedia System IMS, it is characterized in that, comprising:
Access network element is initiated registration according to pre-configured parameter to the home domain of described access network element;
After succeeding in registration, preserve the routing iinformation of described access network element;
The user terminal that inserts IMS by described access network element carries out route according to described routing iinformation.
2. the method for claim 1 is characterized in that, described pre-configured parameter comprises: IMS public identify IMPU and password; Perhaps, the privately owned sign IMPI of IMS public identify IMPU, password and IMS.
3. method as claimed in claim 2 is characterized in that, described access network element is initiated registration according to pre-configured parameter to the home domain of described access network element, specifically comprises:
Described access network element sends register requirement, carries described IMPU in this register requirement;
Service call conversation control function S-CSCF in the home domain of described access network element carries out authentication to described access network element;
After the authentication success, described S-CSCF downloads the user contracting data of described access network element and preserves, and returns the response message of described register requirement to described access network element, carries the address of described S-CSCF in the described response message.
4. method as claimed in claim 3 is characterized in that, after described the succeeding in registration, preserves the routing iinformation of described access network element, comprising:
Described S-CSCF preserves the contact contact address and the described IMPU of described access network element;
Described access network element is preserved the address of described S-CSCF.
5. method as claimed in claim 4 is characterized in that, when described user terminal was the calling subscriber, described user terminal by described access network element access IMS carried out route according to described routing iinformation, comprising:
Described user terminal is to the request of making a call of described access network element;
After described access network element determines that described user terminal is legal,, send the invite request message, carry described IMPU and contact address in the described invite request message to described S-CSCF according to the address of the described S-CSCF that preserves;
Described S-CSCF judges that according to described IMPU and contact address described user terminal inserts by described access network element, obtains the subscription data of described user terminal.
6. method as claimed in claim 4 is characterized in that, when described user terminal was the called subscriber, described user terminal by described access network element access IMS carried out route according to described routing iinformation, comprising:
Described S-CSCF receives the call request from Calling Side, carries described IMPU in this call request;
Described S-CSCF judges that according to described IMPU described user terminal inserts by described access network element;
Described S-CSCF is transmitted to described access network element according to the contact address of the described access network element of preserving with described call request;
Described access network element is issued described user terminal with described call request.
7. an access network element is characterized in that, comprising:
Parameter configuration unit is used to dispose access network element is initiated parameter from registration to its home domain;
Registering unit is used for the parameter according to described parameter configuration unit configuration, initiates registration to the home domain of described access network element;
The unit is preserved in the address, after being used to succeed in registration, preserves the address of the service call conversation control function S-CSCF in the described access network element home domain.
8. access network element as claimed in claim 7 is characterized in that, described parameter comprises:
IMS public identify IMPU and password; Perhaps, the privately owned sign IMPI of IMS public identify IMPU, password and IMS.
9. access network element as claimed in claim 8 is characterized in that, also comprises:
Receiving element is used to receive the call request that user terminal is initiated;
Transmitting element is used for after the described user terminal of determining the request of making a call is legal, according to the address of the described S-CSCF that preserves, sends the invite request message to described S-CSCF, and described invite request message carries described IMPU and contact address.
10. as each described access network element of claim 7-9, it is characterized in that described access network element is: AGCF AGCF, Proxy-Call Session Control Function P-CSCF, moving exchanging center MSC or MGCF MGCF.
11. realize the system of user terminal route among the IP Multimedia System IMS, it is characterized in that, comprise: as the arbitrary described access network element of claim 7 to 10 and as described in service call conversation control function S-CSCF in the access network element home domain, wherein, described S-CSCF is used for described access network element is carried out authentication, after the authentication success, downloads the user contracting data and the preservation of described access network element, and, preserve the contact address and the IMS public identify IMPU of described access network element.
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| CN101925149B (en) | 2014-12-10 |
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