CN101132556B

CN101132556B - Registration method used for IP multimedia subsystem

Info

Publication number: CN101132556B
Application number: CN2007101513156A
Authority: CN
Inventors: 王斌; 郝振武
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2007-09-24
Filing date: 2007-09-24
Publication date: 2011-05-25
Anticipated expiration: 2027-09-24
Also published as: CN101132556A

Abstract

This invention puts forward a registration method for IP multimedia subsystem including: 1,a service call session control function entity informs failure of registration of a third party and registers failure of the user asking for registration and marks the user state a pre-deletion state and starts up network logout to set a waiting timer and wait, 2, when receining subscription of the registration state of the user in the waiting time, the entity sends back a successful rsponse and sends a subscription notification about the logout, 3, the entity examines if the user state is still the pre-deletion state and deletes user data if so when the timer arrives at the preset time.

Description

The register method that is used for IP Multimedia System

Technical field

The present invention relates to the communications field, relate in particular to a kind of register method that is used for IP Multimedia System.

Background technology

IP Multimedia System (IP Multimedia Core Network Subsystem is called for short IMS) is based on Session Initiation Protocol (a kind of application layer protocol of the session of creating two sides or in many ways, revise, terminate).Main functional entity comprises the controlling call entity CSCF (Serving Call Session ControlFunction) of functions such as control user registration, session control among the IMS, manage the home subscriber server HSS (HomeSubscriber Server) of user contracting data concentratedly, the application server AS (Application Server) of miscellaneous service logic control function is provided.

Fig. 1 is that IMS user's registration and user registration state are subscribed to flow chart.Relate generally to following network element and equipment: subscriber equipment (User Equipment, abbreviation UE), carry out Proxy Call Session Control Function (Proxy Call Session Control Function, abbreviation P-CSCF), carry out query call conversation control function (Interrogating Call SessionControl Function, I-CSCF), carry out service call conversation control function (ServingCall Session Control Function, S-CSCF), HSS, and AS.

The IMS network uses the registration process of Session Initiation Protocol, realizes that the user inserts the IMS network.User registration success will be set up relation between public user identity and this user's current location at home domain S-CSCF.Registration process may further comprise the steps as shown in Figure 1:

S102～S104, UE registers to S-CSCF;

S106～S110, S-CSCF obtains user contracting data from HSS, and storage;

S112～S116, S-CSCF make up to succeed in registration and respond and issue, and P-CSCF and UE are known user registration success;

S118～S122, S-CSCF carry out third-party registration according to the triggering rule in the user contracting data to AS, the third-party registration success, and AS returns success response to S-CSCF.The last user's registration of S-CSCF is finished; If do not need to carry out third-party registration, can directly carry out S112;

S124～S130, P-CSCF initiates login state subscription, and S-CSCF handles and subscribes to successfully, returns the subscription success response, and issues subscribing notification; P-CSCF receives after subscribing notification upgrades the user registration state success and returns the subscribing notification success response.

S132～S146, UE initiates login state subscription, and S-CSCF handles and subscribes to successfully, returns the subscription success response, and issues subscribing notification; UE receives after subscribing notification upgrades the user registration state success and returns the subscribing notification success response.

From Fig. 1 process, as can be seen,, the third-party registration failure nullifies the deletion user data if causing user's registration failure, S-CSCF can initiate network; If the login state subscription that this moment, P-CSCF and UE initiated is not as yet successfully, the last user of S-CSCF and HSS can occur is unregistered state, is registered state on UE, the P-CSCF.This process may further comprise the steps as shown in Figure 2:

S202～S220, this process is identical with S102～S120;

S222, the third-party registration failure, AS returns the third-party registration failure response;

S224, the third-party registration failure causes S-CSCF to initiate the network cancellation, and S-CSCF deletes user data, and owing to the also not success of login state subscription of this moment UE and P-CSCF, UE and P-CSCF can't know that S-CSCF goes up the user and is canceled.

Above-mentioned fault produces, can make before UE re-registers during this period of time in, conversation request, non-conversation request that UE initiates all can not be successful.And because UE state registered state not still, this section period can very long (half of the response time of succeeding in registration).This defective had both caused UE, P-CSCF, the last data of S-CSCF, HSS inconsistent, caused the user can not use the serious consequence of IMS communication network again.

Summary of the invention

One or more problems in view of the above, the present invention proposes a kind of register method that is used for IP Multimedia System, can overcome the defective in the existing registration process, can when the third-party registration failure causes user's registration failure, make UE and P-CSCF perceive registration failure.

The register method that is used for IP Multimedia System according to the present invention may further comprise the steps: step S302, service call session control function entity third-party registration failure and will cause user's registration failure of request registration, service call session control function entity is labeled as concurrent network of pre-deletion state with User Status and nullifies, and service call session control function entity is provided with waiting timer and begins and waits for; Step S304, when in the scheduled time of waiting timer, receiving the subscription to the user's of pre-deletion state login state, service call session control function entity loopback success response, and service call session control function entity issues subscribing notification and is canceled to notify the user; And step S306, after waiting timer reached the scheduled time, service call session control function entity checked whether User Status still is pre-deletion state, still is under the situation of pre-deletion state in User Status, the deletion user's data.

Wherein, the pre-configured scheduled time of service call session control function entity.Service call session control function entity adopts the default value of the scheduled time.

In step S306, be checked through under the situation that User Status is a login state, service call session control function entity is not deleted user's data.

By the present invention, overcome the defective in the existing registration process, can when causing user's registration failure, the third-party registration failure make UE and P-CSCF perceive registration failure.

Description of drawings

Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:

Fig. 1 is the flow chart of known IMS registration, third-party registration and login state subscription;

Fig. 2 is the flow chart of known IMS third-party registration failure;

Fig. 3 is according to the flow chart that is used for the register method of IP Multimedia System of the present invention; And

Fig. 4 is the flow chart according to registration of the present invention.

Embodiment

Below with reference to accompanying drawing, describe the specific embodiment of the present invention in detail.

Fig. 3 is according to the flow chart that is used for the register method of IP Multimedia System of the present invention.As shown in Figure 3, this method may further comprise the steps:

S302, the failure of S-CSCF third-party registration, and should failure can cause registration failure, and S-CSCF marks the user as pre-deletion state, and concurrent network nullified, and S-CSCF is provided with waiting timer and waits for, and the waiting timer duration can dispose.

S304 reads the user's of pre-deletion state login state surely if S-CSCF receives, the loopback success response, and issue subscribing notification and notify this user to be canceled.

S306 waits for that duration arrives, and S-CSCF is checked through the user for pre-deletion state, then deletes user data.

Wherein, in described step S302, S-CSCF can adopt default value, uses this default value in the time can not reading configuration.

In described step S306, S-CSCF is checked through the user and is login state, does not then delete user data.

Fig. 4 is the flow chart of registration of the present invention, has described improved register flow path.May further comprise the steps:

S402, UE finish the registration on S-CSCF, and the flow process of its flow process and the described S102～S116 of Fig. 1 is basic identical, see the description of the corresponding flow process of Fig. 1 for details.

S404, S-CSCF carries out the third-party registration failure, and AS returns the third-party registration failure response to S-CSCF, and S-CSCF is checked through this third-party registration failure and causes registration failure, the flow process of its flow process and the described S220～S222 of Fig. 1 is basic identical, sees the description of the corresponding flow process of Fig. 2 for details.

S406, S-CSCF mark the user as pre-deletion state, initiate network and nullify, and read configuration then and wait for duration, begin to wait for.

S408, P-CSCF finishes login state subscription, and the flow process of its flow process and the described S124～S126 of Fig. 1 is basic identical, sees the description of the corresponding flow process of Fig. 1 for details.

S410, S-CSCF sends subscribing notification to P-CSCF, and notice P-CSCF user is deleted.

S412, UE finishes login state subscription, and the flow process of its flow process and the described S132～S138 of Fig. 1 is basic identical, sees the description of the corresponding flow process of Fig. 1 for details.

S414, S-CSCF sends subscribing notification to UE, and notice UE user is deleted.

S416, the S-CSCF stand-by period arrives, and finishes to wait for, if User Status is pre-deletion, then deletes user data.

Pass through the implementation method of this registration in sum, S-CSCF is provided with the user and deletes state in advance and wait for after third-party registration failure, make the login state subscription success of P-CSCF, UE, thereby S-CSCF can notify P-CSCF, UE user deleted by subscribing notification, makes UE, P-CSCF, S-CSCF can handle unusual that the third-party registration failure takes place.

The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims

1. a register method that is used for IP Multimedia System is characterized in that, may further comprise the steps:

Step S302, service call session control function entity third-party registration failure and will cause user's registration failure of request registration, described service call session control function entity is labeled as concurrent network of pre-deletion state with described User Status and nullifies, and described service call session control function entity is provided with waiting timer and begins and waits for;

Step S304, when in the scheduled time of described waiting timer, receiving the subscription to the user's of described pre-deletion state login state, described service call session control function entity loopback success response, and described service call session control function entity issues subscribing notification and is canceled to notify described user; And

Step S306, after described waiting timer reaches the described scheduled time, described service call session control function entity checks whether described User Status still is pre-deletion state, still is under the situation of pre-deletion state in described User Status, deletes described user's data.

2. the register method that is used for IP Multimedia System according to claim 1 is characterized in that, the pre-configured described scheduled time of described service call session control function entity.

3. the register method that is used for IP Multimedia System according to claim 1 is characterized in that described service call session control function entity adopts the default value of the described scheduled time.

4. according to each described register method that is used for IP Multimedia System in the claim 1 to 3, it is characterized in that, in described step S306, be checked through under the situation that described User Status is a login state, described service call session control function entity is not deleted described user's data.