CN101925149B - 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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- CN101925149B CN101925149B CN200910107977.2A CN200910107977A CN101925149B CN 101925149 B CN101925149 B CN 101925149B CN 200910107977 A CN200910107977 A CN 200910107977A CN 101925149 B CN101925149 B CN 101925149B
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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, particularly in a kind of IP Multimedia System IMS, realize the method for user terminal route.
Background technology
IP Multimedia System (IP Multimedia Subsystem, IMS) is the subsystem that completes multimedia communication in packet domain.It is its session control protocol that IMS adopts Session initiation Protocol (Session initiation protocol, SIP).
In IMS network, conventionally need terminal support registration that business could be further provided.Registration has completed network on the one hand terminal legality has been checked, completes on the other hand the binding of terminal address, for follow-up business provides routing iinformation.For passing through AGCF (Access Gateway Control Function, AGCF) or IP small switch (IP Private Branch Exchange, IP PBX) be linked into the user of IMS, conventionally because the POST terminal that terminal is 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 starts or restarts, each user who acts on behalf of one by one under this network element registers separately.That is,, if there are 100 users under this network element, so, this network element is just initiated 100 registrations, thereby guarantees that each user successfully registers at IMS network.
But, because customer volume below an access network element is larger, may reach several ten thousand, even more, when access network element is acted on behalf of each user and registered separately, information interaction amount is large, the easy like this registration storm that causes when access network element starts or restarts, or all user registration course is longer, causes the service disconnection of long period.
Summary of the invention
The embodiment of the present invention provides a kind of method that realizes user terminal route in IP Multimedia System IMS, has solved the problem existing when access network element proxy user is registered in prior art.
The embodiment of the present invention provides a kind of method that realizes the user terminal route of traditional circuit domain in IP Multimedia System IMS, comprising:
Access network element, according to pre-configured parameter, is initiated registration as IMS user 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 accesses the described traditional circuit domain of IMS by described access network element, carries out route according to described routing iinformation.
The embodiment of the present invention also provides a kind of access network element, comprising:
Parameter configuration unit, initiates the parameter of registration for configuring access network element to its home domain;
Registering unit, for according to the parameter of described parameter configuration unit configuration, initiates to register using described access network element as IMS user to the home domain of described access network element;
Address storage unit, after succeeding in registration, preserves the address of the service call conversation control function S-CSCF in described access network element home domain.
The embodiment of the present invention also provides the system that realizes the user terminal route of traditional circuit domain in a kind of IP Multimedia System IMS, comprise access network element that the embodiment of the present invention provides and the service call conversation control function S-CSCF in described access network element home domain, wherein, described S-CSCF is for carrying out authentication to described access network element, after authentication success, download the user contracting data of described access network element and preserve, and, preserve contact address and the IMS public identify IMPU of described access network element.
The routing iinformation obtaining when the embodiment of the present invention is registered by use access network element, realization is through the route of the user terminal of this access network element access IMS, effectively solved the problem existing when access network element proxy user is registered in prior art, thereby the expense of having saved system processing, bandwidth, has improved system availability.Meanwhile, can also provide differentiated service for user, strengthen the applicability of IMS system.
Accompanying drawing explanation
In the IP Multimedia System IMS that Fig. 1 embodiment of the present invention provides, realize the method flow schematic diagram of user terminal route;
The registration process schematic diagram that in Fig. 2 embodiment of the present invention, AGCF initiates;
The caller process schematic diagram of realizing by AGCF when user terminal is as calling subscriber in Fig. 3 embodiment of the present invention;
The called process schematic diagram of realizing by AGCF when user terminal is as called subscriber in Fig. 4 embodiment of the present invention;
The structural representation of the access network element that Fig. 5 embodiment of the present invention provides;
Another structural representation of the access network element that Fig. 6 embodiment of the present invention provides.
Embodiment
For making embodiment of the present invention object, technical scheme and advantage clearer, clear, referring to accompanying drawing, the embodiment of the present invention is described in detail:
In IP Multimedia System IMS provided by the invention, realize user terminal route method an embodiment flow process as shown in Figure 1, concrete steps comprise:
Step 100, access network element are initiated registration according to pre-configured parameter to the home domain of described access network element;
It should be noted that, above-mentioned access network element, before initiating registration, is opened an account in the home subscriber server (Home Subscriber Server, HSS) of its home domain.Described pre-configured parameter is specially: in the local configuration of access network element, initiate IMS public subscriber identification (the IMS Public Identity of registration as a NE User, IMPU), IMS private user identity (IMS Private Identity, IMPI) and password.Wherein, IMPI is optional parameters.After access network element starts, judgement, from as unregistered state,, according to this locality configuration, is initiated registration to its home domain.This registration process specifically comprises the following steps:
Step 1001, access network element send registration request to its home domain, carry pre-configured IMPU in this registration request;
Service call conversation control function S-CSCF in step 1002, access network element home domain receives after described registration request, and this access network element is carried out to authentication;
After step 1003, authentication success, described S-CSCF obtains the user contracting data of described access network element and preserves, and returns to the response message of described registration request to described access network element, carries the address of described S-CSCF in described response message.
Step 102, succeed in registration after, preserve the routing iinformation of described access network element;
Specifically, comprising: S-CSCF preserves contact address (being contact address, self the IP address while being access network element registration) and the IMPU of access network element; Access network element is preserved the address of described S-CSCF.
Step 104, the user terminal by described access network element access IMS carry out route according to described routing iinformation.
Wherein, the route of described user terminal specifically comprises: caller route and called route.
When user terminal is calling subscriber, the route of described user terminal is caller route, and the realization of this caller route specifically comprises the following steps:
Step 1041a, user terminal are to the request of making a call of the access network element under it, and this access network element is successfully registered;
After step 1042a, described access network element determine that described user terminal is legal, according to the address of the above-mentioned S-CSCF preserving, to S-CSCF, send invite request message, in this invite request message, carry described IMPU and contact address, wherein, described IMPU is carried in the P-Asserted-Identity header field in invite request message;
Step 1043a, described S-CSCF, according to described IMPU and contact address, judge that described user terminal accesses by described access network element, obtain the subscription data of described user terminal, are kept at this locality and offer follow-up business use.
When user terminal is called subscriber, the route of described user terminal is called route, and the realization of this called route specifically comprises the following 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 in the Reqest-URI of described call request;
Step 1042b, S-CSCF are according to described IMPU, and judgement called user terminal accesses by described access network element;
Step 1043b, S-CSCF, according to the contact address of the described access network element of preserving, are transmitted to described access network element by described call request;
Step 1044b, described access network element are issued described called user terminal by described call request.
It should be noted 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 present invention provides, access network element, according to pre-configured parameter, is registered as NE User, rather than proxy user terminal is registered, the routing iinformation that obtains access network element, user terminal carries out route by the routing iinformation of access network element again.Thereby, realization is through the route of the user terminal of this access network element access IMS, effectively solved in prior art when access network element proxy user is registered information interaction amount large, easily when starting or restart, access network element causes the problem of long period service disconnection, thereby the expense of having saved system processing, bandwidth, has improved system availability.Meanwhile, due to user terminal can be separately routing iinformation by access network element carry out route, obtain subscription data, a kind of universal registration mode adopting with respect to prior art, can also provide differentiated service for user, has strengthened the applicability of IMS system.
Below, take AGCF as example, by some concrete application scenarioss, the method that realizes user terminal route in the IP Multimedia System IMS that the embodiment of the present invention is provided is described further.
The registration process schematic diagram of initiating for AGCF as shown in Figure 2.In this example, be configured in advance IMPU, IMPI and the password of as a NE User, initiating registration in AGCF this locality, wherein, IMPI is optional.Meanwhile, 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,, AGCF initiates registration according to this locality is pre-configured to its home domain, and registration request being mail to the interrogation-call session control function I-CSCF of home domain, its IMPU is agcf.home.com;
202, I-CSCF initiates subscription authentication (User Authorization, UA) process, from HSS, obtains the S-CSCF address for AGCF service;
203, I-CSCF sends to registration request and S-CSCF corresponding to above-mentioned S-CSCF address;
204, S-CSCF receives after registration request, initiates multimedia authentication (Multimedia Authorization, MA) process, obtains the authorization data of described AGCF from HSS, and this AGCF is initiated to authentication;
205-206, S-CSCF return to 401 message to I-CSCF, and I-CSCF is transmitted to AGCF 401 message of receiving;
207, AGCF, according to the password of the relevant parameter in described 401 message and local configuration, calculates a result, carries this result of calculation and again initiates registration process;
208, I-CSCF receives after registration request, again initiates UA process, is retrieved as the S-CSCF address of above-mentioned AGCF service from HSS;
209, I-CSCF is dealt into registration request and S-CSCF corresponding to above-mentioned S-CSCF address;
2010, S-CSCF receives after registration request, initiate server-assignment (Server Assignment, SA) process, downloads this AGCF as the subscription data of NE User from HSS, and preserves the contact address of described subscription data and AGCF and IMPU to local;
2011-2012, S-CSCF return to 200 message by I-CSCF to AGCF, and AGCF preserves the state of the address of the described S-CSCF carrying in this 200 message and the IMPU of self correspondence registration.
It should be noted that: the IMPU of above-mentioned AGCF can configure by independent table, when existing many to record, the user terminal that can realize same AGCF access is served by the different S-CSCF of different home domain or same home domain.When recording for many, AGCF initiates repeatedly registration according to the IMPU of configuration, and preserves respectively the address of the S-CSCF that registration obtains at every turn.
Further, can specify a registration time length for above-mentioned registration process, this registration time length can configure in advance in AGCF, also can be distributed by network side.Before registration timeout, AGCF initiates registration (that is, re-injection volume) again.
As shown in Figure 3, for user terminal during as calling subscriber, the caller process schematic diagram of initiating by AGCF.In this example, calling subscriber is signing 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, makes a call and sets up setup signaling to the AGCF under it;
302, AGCF receives after this call request, check that whether this user terminal is legal, if legal, local S-CSCF address of preserving during according to registration, to corresponding S-CSCF, initiate Invite request, wherein, the P-Asserted-Identity header field in Invite request message is sip:+861081234567@agcf.home.com, user=phone, the IP address of AGCF when contact address is registration;
303, S-CSCF receives after this Invite request, the IP address that checks contact in Invite is registered, then from P-Asserted-Identity, obtain the IMPU:agcf.home.com of the AGCF that user's domain name part is this registration, judge that described user terminal belongs to AGCF access, initiate the subscription data of SA Procedure Acquisition tel:+861081234567, and be kept at and locally as follow-up business, use;
304, S-CSCF, according to the subscription data of the user terminal obtaining, checks initial filter standard or norm (Initial Filter Criteria, iFC), triggers corresponding service.
As shown in Figure 4, for user terminal during as 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, according to the domain name agcf.home.com judgement called user terminal of user in this IMPU, is AGCF user;
402, S-CSCF checks the subscription data there is not above-mentioned called user terminal, initiates SA process, obtains the subscription data of this called user terminal, and is kept at and locally as follow-up business, uses;
403-404, S-CSCF, according to the described subscription data obtaining, check iFC, trigger corresponding service;
405, business triggering is complete, and IP address when S-CSCF registers according to AGCF (, contact address), above-mentioned call request is transmitted to corresponding AGCF;
406, AGCF issues corresponding terminal called by described call request.
The method providing with respect to the embodiment of the present invention, the embodiment of the present invention also provides a kind of access network element.As shown in Figure 5, the structural representation of the access network element providing for the embodiment of the present invention, comprising: parameter configuration unit 501, for configuring access network element, to its home domain, initiate the parameter of registration; Registering unit 502, for according to the parameter of described parameter configuration unit 501 configurations, initiates registration to the home domain of described access network element; Address storage unit 503, after succeeding in registration, preserves the address of the service call conversation control function S-CSCF in 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.It should be noted that, described IMPI is optional parameters.
As shown in Figure 6, another structural representation of the access network element providing for the embodiment of the present invention, comprising on the basis of parameter configuration unit 501, registering unit 502 and address storage unit 503, further comprising: receiving element 601, the call request of initiating for receiving user terminal; Transmitting element 602, legal for the described user terminal determining the request of making a call after, according to the address of the described S-CSCF preserving, to described S-CSCF, send invite request message, described invite request message carries IMPU and contact address.
It should be noted that, the access network element that the embodiment of the present 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 present invention also provides the system that realizes user terminal route in a kind of IP Multimedia System IMS, comprise access network element that the embodiment of the present invention provides and the service call conversation control function S-CSCF in described access network element home domain, wherein, described S-CSCF is for carrying out authentication to described access network element, after authentication success, download the user contracting data of described access network element and preserve, and, contact address and the IMS public identify IMPU of described access network element preserved.
The method providing by the embodiment of the present invention, access network element and system, access network element is according to pre-configured parameter, as NE User, register, rather than proxy user terminal is registered, the routing iinformation that obtains access network element, user terminal carries out route by the routing iinformation of access network element again.Thereby, realization is through the route of the user terminal of this access network element access IMS, effectively solved in prior art when access network element proxy user is registered information interaction amount large, easily when starting or restart, access network element causes the problem of long period service disconnection, thereby the expense of having saved system processing, bandwidth, has improved system availability.Meanwhile, due to user terminal can be separately routing iinformation by access network element carry out route, obtain subscription data, a kind of universal registration mode adopting with respect to prior art, can also provide differentiated service for 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 mode that the present invention can add essential hardware platform by software and realize, can certainly all by hardware, implement, but in a lot of situation, the former is better execution mode.Understanding based on such, what technical scheme of the present invention contributed to background technology can embody with the form of software product in whole or in part, this computer software product can be stored in storage medium, as ROM/RAM, magnetic disc, CD etc., comprise that some instructions are with so that a computer equipment (can be personal computer, server, or the network equipment etc.) carry out the method described in some part of each embodiment of the present invention or embodiment.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (11)
1. in IP Multimedia System IMS, realize a method for the user terminal route of traditional circuit domain, it is characterized in that, comprising:
Access network element, according to pre-configured parameter, is initiated registration as IMS user 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 accesses the described traditional circuit domain of 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; Or, IMS public identify IMPU, password and the privately owned sign IMPI of 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 registration request, carries described IMPU in this registration request;
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 authentication success, described S-CSCF downloads the user contracting data of described access network element and preserves, and returns to the response message of described registration request to described access network element, carries the address of described S-CSCF in described response message.
4. method as claimed in claim 3, is characterized in that, described in succeed in registration after, preserve the routing iinformation of described access network element, comprising:
Described S-CSCF preserves 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 is calling subscriber, the described user terminal by described access network element access IMS carries 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, according to the address of the described S-CSCF preserving, to described S-CSCF, send invite request message, in described invite request message, carry described IMPU and contact address;
Described S-CSCF, according to described IMPU and contact address, judges that described user terminal accesses 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 is called subscriber, the described user terminal by described access network element access IMS carries 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, according to described IMPU, judges that described user terminal accesses by described access network element;
Described S-CSCF, according to the contact address of the described access network element of preserving, is transmitted to described access network element by described call request;
Described access network element is issued described user terminal by described call request.
7. an access network element, is characterized in that, comprising:
Parameter configuration unit, initiates the parameter of registration for configuring described access network element to its home domain;
Registering unit, for according to the parameter of described parameter configuration unit configuration, initiates to register using described access network element as IMS user to the home domain of described access network element;
Address storage unit, after succeeding in registration, preserves the address of the service call conversation control function S-CSCF in 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; Or, IMS public identify IMPU, password and the privately owned sign IMPI of IMS.
9. access network element as claimed in claim 8, is characterized in that, also comprises:
Receiving element, the call request of initiating for receiving user terminal;
Transmitting element, legal for the described user terminal determining the request of making a call after, according to the address of the described S-CSCF preserving, to described S-CSCF, send invite request message, described invite request message carries described IMPU and contact address.
10. the access network element as described in claim 7-9 any one, 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.
In 11. 1 kinds of IP Multimedia System IMS, realize the system of the user terminal route of traditional circuit domain, it is characterized in that, comprise: the access network element as described in as arbitrary in claim 7 to 10 and as described in service call conversation control function S-CSCF in access network element home domain, wherein, described S-CSCF is for carrying out authentication to described access network element, after authentication success, download the user contracting data of described access network element and preserve, and, preserve contact address and the IMS public identify IMPU of described access network element.
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| WO2013097179A1 (en) * | 2011-12-30 | 2013-07-04 | 华为技术有限公司 | Call routing method and device for ip pbx |
| CN103391539B (en) * | 2012-05-11 | 2016-06-22 | 中国移动通信集团上海有限公司 | The account-opening method of internet protocol multi-media sub-system IMS, Apparatus and system |
| CN108811012A (en) * | 2018-06-01 | 2018-11-13 | 中国联合网络通信集团有限公司 | Audio communication method, IMS network and terminal |
| CN113993123B (en) * | 2021-10-15 | 2024-04-09 | 展讯半导体(成都)有限公司 | Parameter configuration method and related device |
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