CN101965046A - Method for instructing terminal to register in IP multimedia subsystem and system thereof - Google Patents
Method for instructing terminal to register in IP multimedia subsystem and system thereof Download PDFInfo
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- CN101965046A CN101965046A CN2010105033681A CN201010503368A CN101965046A CN 101965046 A CN101965046 A CN 101965046A CN 2010105033681 A CN2010105033681 A CN 2010105033681A CN 201010503368 A CN201010503368 A CN 201010503368A CN 101965046 A CN101965046 A CN 101965046A
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Abstract
The invention discloses a method for instructing a terminal to register in an IP multimedia subsystem (IMS), which comprises the following steps of: an entity with a service call session control function (S-CSCF) adds an registering instruction into a call request after receiving and processing the call request of a calling terminal, and an entity with a proxy call session control function (P-CSCF) sends the call request which is added with the registering instruction to a called terminal. The invention further discloses a system for instructing a terminal to register in an IP multimedia subsystem (IMS). The method and the system can instruct the called terminal to register when the entity with the service call session control function (S-CSCF) has disaster recovery, is simple and convenient in realization method, can reduce the signaling flow, and saves the memory space of the HSS.
Description
Technical field
(Internet Protocol, IP) the endpoint registration field in the IP multimedia subsystem, IMS relate in particular to the method and system of notifying endpoint registration in a kind of IP Multimedia System to the present invention relates to Internet protocol.
Background technology
IP Multimedia System is called for short IMS, be third generation affiliate tissue (3rd GenerationPartnership Project, 3GPP) the standard of Ding Yi next-generation communication network, its distinguishing feature is to adopt SIP (Session Initiation Protocol, SIP) system, possess that multiple media business controlled function is separated with bearing capacity, calling separates with session, application separates with service, business and network detach, and multiple functions such as mobile network and internet service fusion.
The network architecture of IMS system as shown in Figure 1, comprise following major function entity: subscriber equipment (UserEquipment, UE), Proxy Call Session Control Function (Proxy call session control Function, P-CSCF) entity, query call conversation control function (Interrogating call session controlFunction, I-CSCF) entity, service call conversation control function (Serving call session controlFunction, S-CSCF) entity, home subscriber server (Home subscriber Server, HSS), and application server (Application Server, AS).Described UE is called terminal again herein.
In the IMS network, work as the network equipment, be above-mentioned each functional entity or communication link when breaking down, the IMS network need possess effective disaster tolerance mechanism, so that effectively reduce owing to inconsistent service fail that causes of the data of the network equipment and terminal room or unusual situation.After the network equipment or communication link broke down, IMS network disaster tolerance mechanism allowed to interrupt current ongoing business, but must guarantee that follow-up new business can normally carry out.
In the prior art, before the IMS Network realized, terminal need at first be registered, and in the registration process, can preserve the essential information of terminal on P-CSCF entity, S-CSCF entity, AS and the HSS.When S-CSCF entity generation disaster tolerance, the call request of calling terminal may send to another new S-CSCF entity or send to restarts on the former S-CSCF entity that recovers the back, but the essential information of no terminal called on this moment S-CSCF entity, in order to guarantee professional normally carrying out, then require the S-CSCF entity to continue to finish follow-up call flows, also need notify terminal called to register to the IMS network again simultaneously, thereby recover the essential information of terminal called on the S-CSCF entity, guarantee the essential information of this terminal of the whole network and the consistency of state information.Wherein, described essential information can be the information such as IP address of terminal; Described state information can be related service data such as charge information.
In order to guarantee that when the S-CSCF entity generation disaster tolerance, the S-CSCF entity can be carried out follow-up call operation, can notify terminal called to register again, existingly adopt following implementation method:
Terminal is finished after the registration of IMS network, and to S-CSCF entity transmit status subscribe request, the S-CSCF entity is preserved the subscription information of carrying in the subscribe request through the P-CSCF entity, and replys the subscription success response to terminal through the P-CSCF entity.In order to notify terminal called to register, the S-CSCF entity also needs subscription information is backed up, and (SAR) backups to HSS with subscription information by user's configuring request.When S-CSCF entity generation disaster tolerance, owing to there is not the essential information of terminal called in the S-CSCF entity, the S-CSCF entity needs to obtain the subscription information that has backed up from HSS, and terminal called when registration HSS essential information of having preserved, the terminal called essential information returned according to HSS of S-CSCF entity is handled the call request of calling terminal afterwards, and through P-CSC entity F call request is transmitted to terminal called; Simultaneously, the S-CSCF entity also according to the subscription information that has backed up structure notice (notify) message of obtaining from HSS, register, and after terminal called is received the notify message of P-CSCF entity forwarding, carries out the registration operation by the notice terminal called.
Can find from said process, register, at first need to back up the subscription information of terminal called in order to notify terminal called; In addition, when handling the call request of calling terminal, the S-CSCF entity need obtain the subscription information that backs up among the HSS, and registers according to subscription information structure notify message informing terminal called.As seen, the signaling traffic of this process network equipment room is big, and backup the time need take memory space bigger among the HSS; Simultaneously, the process of subscription information backup and structure notify message also makes the logic function of S-CSCF entity complicated.
Summary of the invention
In view of this, main purpose of the present invention is to provide the method and system of notice endpoint registration among a kind of IMS, can notify terminal called to register when S-CSCF entity generation disaster tolerance, and implementation method is easy, can reduce signaling traffic, save the memory space of HSS.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention provides the method for notice endpoint registration among a kind of IMS, this method comprises:
After the S-CSCF entity is received and handled the call request of calling terminal, add the registration indication in described call request, the call request that will be added with the registration indication through the P-CSCF entity afterwards sends to terminal called.
Wherein, the call request of described S-CSCF entity handles calling terminal is:
The S-CSCF entity sends user's configuring request SAR to HSS, acquisition request terminal called essential information, and HSS returns user's configuration response SAA afterwards, and the S-CSCF entity is handled the call request of calling terminal according to the essential information of the terminal called that carries among the SAA.
Wherein, the essential information of carrying terminal called among the described SAA.
In the such scheme, described registration is designated as extended field or the spreading parameter of SIP; Or be the registration instruction content of the XML form that in the sip message body, adds.
This method also comprises:
After terminal called is received the call request that is added with the registration indication, resolve the registration indication in the call request, when finishing call operation, register.
The present invention also provides the system of notice endpoint registration among a kind of IMS, and this system comprises: S-CSCF entity, P-CSCF entity and terminal called; Wherein,
Described S-CSCF entity is used to receive and handle the call request of calling terminal, and adds the registration indication in described call request, will be added with the call request of registering indication through the P-CSCF entity afterwards and send to terminal called;
Described P-CSCF entity is used for the call request that is added with the registration indication that the S-CSCF entity sends is transmitted to terminal called;
Described terminal called is used to receive the call request that is added with the registration indication that the P-CSCF entity is transmitted.
Wherein, the call request of described S-CSCF entity handles calling terminal is: send SAR acquisition request terminal called essential information to HSS, after HSS returns SAA, handle the call request of calling terminal according to the essential information of the terminal called that carries among the SAA;
Accordingly, this system further comprises HSS, be used to receive the SAR that the S-CSCF entity sent out after, return the SAA that carries the terminal called essential information.
Wherein, described terminal called, be further used for receiving the call request of having added registration indication after, resolve the registration indication in the call request, when finishing call operation, register.
Wherein, described registration is designated as extended field or the spreading parameter of SIP; Or be the registration instruction content of the XML form that in the sip message body, adds.
The method and system of notice endpoint registration among the IMS provided by the invention, after the S-CSCF entity is received and is handled the call request of calling terminal, in described call request, add the registration indication, will be added with the call request of registering indication through the P-CSCF entity afterwards and send to terminal called.The present invention notifies terminal called to register by add the registration indication in call request, because of described registration indication does not comprise subscription information, so the corresponding S-CSCF of the saving entity of the present invention backups to the subscription information of terminal called the process of HSS, be terminal called after the executing state subscription operation, the S-CSCF entity need not to carry out the backup operation of subscription information again.Therefore, the present invention can reduce the signaling traffic of HSS and S-CSCF inter-entity, also can save the memory space of HSS.
In addition, the present invention does not need the subscription information structure notify message according to terminal called, only needing to add in call request the registration indication gets final product, compared with prior art, simplified the performed operation of S-CSCF entity in this process, promptly simplified the logic function of S-CSCF entity, implementation method is simple, effective.
Description of drawings
Fig. 1 is the network architecture schematic diagram of existing IMS system;
Fig. 2 is the method realization flow schematic diagram of notice endpoint registration among the IMS of the present invention;
Fig. 3 is the system configuration schematic diagram of notice endpoint registration among the IMS of the present invention.
Embodiment
In order to reduce signaling traffic, the present invention saves the S-CSCF entity subscription information of terminal called is backuped to process among the HSS, accordingly, the S-CSCF entity does not need the subscription information structure notify message according to backup yet, basic thought of the present invention is: after the S-CSCF entity is received and handled the call request of calling terminal, in described call request, add the registration indication, will be added with the call request of registering indication through the P-CSCF entity afterwards and send to terminal called.
Further, after terminal called is received call request, resolve registration indication wherein, when finishing call treatment, carry out the registration operation.
Below in conjunction with drawings and the specific embodiments the present invention is described in further detail.
Fig. 2 is the method realization flow schematic diagram of notice endpoint registration among the IMS of the present invention, and as shown in Figure 2, the performing step of this method is as follows:
The call request of calling terminal is received and handled to step 201:S-CSCF entity;
Be specially: the S-CSCF entity receives after the call request of the calling terminal of network elements such as I-CSCF entity or AS forwarding do not have the terminal called essential information because of finding this locality, then sends SAR, acquisition request terminal called essential information to HSS; HSS returns user's configuration response (SAA) after receiving SAR, the essential information of carrying terminal called among the SAA, and the S-CSCF entity is then handled the call request of calling terminal by existing method according to the essential information of terminal called.
Here, because the present invention is when terminal called executing state subscription operation, save the S-CSCF entity subscription information of terminal called is backuped to operation among the HSS, therefore, carry the essential information of terminal called among the SAA that HSS returns described in this step, and do not comprise the subscription information that has backed up of carrying among the SAA that existing HSS returns.
Step 202:S-CSCF entity adds the registration indication in call request;
Be specially: in the call request of S-CSCF entity after processing, add the registration that is used to notify terminal called to register and indicate, this registration indication can be extended field or the spreading parameter of SIP; Or be registration instruction content of extend markup language (XML) form that in the sip message body, adds or the like.
Here, the S-CSCF entity does not need the message according to subscription information structure notify, only needing to add in call request the registration indication gets final product, accordingly, when terminal called executing state subscription operation, can save the backup procedure of subscription information, not only can simplify the performed operation of S-CSCF entity, also reduce the signaling traffic between S-CSCF entity and HSS, saved the memory space of HSS.
Step 203:S-CSCF entity sends to terminal called through the call request that the P-CSCF entity will be added with the registration indication;
Be specially: the S-CSCF entity sends to the P-CSCF entity with the call request of adding the registration indication, and the P-CSCF entity is forwarded to terminal called with the call request of receiving.
Further, after terminal called is received call request, resolve registration indication wherein, can when finishing call operation, carry out the registration operation.
Here, terminal called can be resolved the registration indication of carrying in the call request, carries out the registration operation according to the registration indication.About the content of registration indication, terminal called and S-CSCF entity are held consultation before service operation, so that terminal called is resolved.
Fig. 3 is the system configuration schematic diagram of notice endpoint registration among the IMS of the present invention, and as shown in Figure 3, this system comprises: S-CSCF entity, P-CSCF entity and terminal called; Wherein,
Described S-CSCF entity is used to receive and handle the call request of calling terminal, and adds the registration indication in described call request, will be added with the call request of registering indication through the P-CSCF entity afterwards and send to terminal called;
Described P-CSCF entity is used for the call request that is added with the registration indication that the S-CSCF entity sends is transmitted to terminal called;
Described terminal called is used to receive the call request of adding the registration indication that the P-CSCF entity is transmitted.
Described terminal called, be further used for receiving the call request of having added registration indication after, resolve the registration indication in the call request, when finishing call operation, register.
The call request of described S-CSCF entity handles calling terminal is: send SAR to HSS, acquisition request terminal called essential information after HSS returns SAA, is handled the call request of calling terminal according to the essential information of the terminal called that carries among the SAA;
Accordingly, this system further comprises HSS, be used to receive the SAR that the S-CSCF entity sent out after, return the SAA that carries the terminal called essential information.
Wherein, described registration is designated as extended field or the spreading parameter of SIP; Or be the registration instruction content of the XML form that in the sip message body, adds.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. the method for notice endpoint registration among the IP Multimedia System IMS is characterized in that this method comprises:
After service call conversation control function S-CSCF entity is received and is handled the call request of calling terminal, in described call request, add the registration indication, will be added with the call request of registering indication through Proxy Call Session Control Function P-CSCF entity afterwards and send to terminal called.
2. the method for notice endpoint registration among the IMS according to claim 1 is characterized in that the call request of described S-CSCF entity handles calling terminal is:
The S-CSCF entity sends user's configuring request SAR to home subscriber server HSS, acquisition request terminal called essential information, HSS returns user's configuration response SAA afterwards, and the S-CSCF entity is handled the call request of calling terminal according to the essential information of the terminal called that carries among the SAA.
3. the method for notice endpoint registration is characterized in that among the IMS according to claim 2, carries the essential information of terminal called among the described SAA.
4. according to the method for notice endpoint registration among claim 1, the 2 or 3 described IMS, it is characterized in that described registration is designated as extended field or the spreading parameter of SIP SIP; Or be the registration instruction content of the expandable mark language XML form that in the sip message body, adds.
5. according to the method for notice endpoint registration among claim 1, the 2 or 3 described IMS, it is characterized in that this method also comprises:
After terminal called is received the call request that is added with the registration indication, resolve the registration indication in the call request, when finishing call operation, register.
6. the system of notice endpoint registration among the IMS is characterized in that this system comprises: S-CSCF entity, P-CSCF entity and terminal called; Wherein,
Described S-CSCF entity is used to receive and handle the call request of calling terminal, and adds the registration indication in described call request, will be added with the call request of registering indication through the P-CSCF entity afterwards and send to terminal called;
Described P-CSCF entity is used for the call request that is added with the registration indication that the S-CSCF entity sends is transmitted to terminal called;
Described terminal called is used to receive the call request that is added with the registration indication that the P-CSCF entity is transmitted.
7. the system of notice endpoint registration among the IMS according to claim 6, it is characterized in that, the call request of described S-CSCF entity handles calling terminal is: send SAR acquisition request terminal called essential information to HSS, after HSS returns SAA, handle the call request of calling terminal according to the essential information of the terminal called that carries among the SAA;
Accordingly, this system further comprises HSS, be used to receive the SAR that the S-CSCF entity sent out after, return the SAA that carries the terminal called essential information.
8. according to the system that notifies endpoint registration among claim 6 or the 7 described IMS, it is characterized in that, described terminal called, be further used for receiving the call request of having added registration indication after, resolve the registration indication in the call request, when finishing call operation, register.
9. according to the system of notice endpoint registration among claim 6 or the 7 described IMS, it is characterized in that described registration is designated as extended field or the spreading parameter of SIP; Or be the registration instruction content of the XML form that in the sip message body, adds.
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| CN103138984B (en) * | 2011-12-02 | 2016-09-28 | 中兴通讯股份有限公司 | Disaster tolerance refunds the method and system of service call session control function entity |
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