CN101170577A - Method for storing user service archives in multimedia subsystem - Google Patents

Abstract

The invention discloses the saving method of a multi-media sub-system user business archive and relates to a data compression strategy in the acquiring course of multi-media sub-system(IMS) network. The invention comprises the following steps: (1): when logging on IMS network, UF(A) transmits the registration information to main S-CSCF; (2): in the registration course of a user equipment, main S-CSCF(B) downloads user business archive data from HSS(C); (3): The main S-CSCF(B) compresses the user business archive data through key word file and saves the user business archive data; (4): the S-CSCF(B) also adopts the compression method in the course that the S-CSCF(B) transmits user business archive backup to S-CSCF(D); (5): the main S-CSCF(B) loops back one response of registration success to UE(A). The invention has the advantages of simple acquiring course, can effectively reduce data storage space of the user business archive and can reduce bandwidth needed by user business archive data synchronization between CSCF equipments.

Description

The store method of user service archives in multimedia subsystem

Technical field

The present invention relates to a kind of data compression strategy in IP multimedia subsystem, IMS (IMS) the network implementation procedure, specifically, relate to call session controller (CSCF) and adopt compress mode to preserve user service archives, and in the transmission course that CSCF backs up user service archives, also adopt compress mode.

Background technology

IMS is the trend of network technology and business development, generally acknowledges it is an important step of fixed network and mobile network evolution, is the optimal path of realizing the fusion (FMC) of fixed communication and mobile communication.CSCF is the nucleus equipment of IMS network control layer as the important node of call treatment, realizes the controlled function of IMS territory session.Difference according to the CSCF function can be divided three classes it:

● P-CSCF (proxy CSCF)

● I-CSCF (Interrogating CSCF)

● S-CSCF (serving CSCF)

Home subscriber server (HSS) is an important network element in the IMS network, has wherein stored the required various user profile of processing Multimedia session that comprise positional information, Certificate Authority information, subscriber profile and ownership session initiation protocol (SIP) server.

When the user when operator obtains an IMS order relations, operator need distribute user's service configuration to it.Service configuration is present among the HSS, when IMS user registers, downloads to S-CSCF.

User's service configuration comprises three parts: public identifier, core net authorization of service and initial filter criteria:

1. described public identifier is made of those user's common identities related with service configuration.Each public identifier all has one to forbid indication (Barring Indication), if it is set up, S-CSCF stops this common identity to be used in during any other IMS except that registration and unregistration communicates by letter.

2. media strategy information has been carried in described core net mandate, and operator is by the different user gradation of these media strategy information definitions.

What 3. described initial filter criteria was represented is service trigger information, and when the sip message that it is used for describing arrival is routed to a specific application server is carried out corresponding service and trigger.

But:

1. the amount of user data of IMS is sizable, and primary, spare S-CSCF storaging user data will certainly take the memory space of a lot of preciousnesses;

2. in order to guarantee the user service archives data sync of CSCF equipment room, user data repeats to transmit has wasted very considerable bandwidth, and has a strong impact on treatment effeciency.

Therefore a kind of effective strategy of necessary proposition solves this problem.

Summary of the invention

Purpose of the present invention just is to overcome the shortcoming and defect that prior art exists, a kind of store method of user service archives in multimedia subsystem is provided, with the memory space of effective minimizing user service archives data, reduce the needed bandwidth of user service archives data sync of CSCF equipment room.

As Fig. 1, the present invention includes the following step:

(1) UE (A) sends log-on message to the main S-CSCF (B) of using when the IMS network registry;

(2) in the registration process of subscriber equipment, the main S-CSCF (B) that uses is from HSS (C) download user service profile data;

(3) master deposits after with S-CSCF (B) the user service archives data being compressed by the keyword text;

(4) master also adopts compress mode with S-CSCF (B) in the process of standby S-CSCF (D) transmission user service profile data backup;

(5) lead with S-CSCF (B) to response of succeeding in registration of UE (A) loopback;

Described UE (A) claims subscriber equipment, is the terminal equipment in IMS territory, is the promoter of IMS signaling message;

The described main S-CSCF of using (B) claims the master to use the service call conversation controller, is the core of IP multimedia subsystem, IMS, is positioned at home network, for subscriber equipment carries out session control and registration service;

Described HSS (C) claims home subscriber server, is the main data storage of all data relevant with service with the user among the IMS, and the data owner that is stored among the HSS (C) will comprise user identity, log-on message, access parameter and service trigger message;

Described standby S-CSCF (D) claims standby service call conversation controller, with main synchronous with S-CSCF (B) maintenance, the promptly main user service archives data of also compressing later on the user service archives data of S-CSCF (B) compression and preservation to standby S-CSCF (D) transmission.

Operation principle of the present invention is:

The crucial clauses and subclauses that often occur in the IMS user configuration are limited, and it is based on text; Therefore, can take the compression of keyword text to user's configuration, this compression method possesses the characteristics of higher compression ratios taken into account and low computation complexity, can effectively reduce the memory space of user service archives data, reduces the needed bandwidth of user service archives data sync of CSCF equipment room; Improve data-handling efficiency and utilization rate of equipment and installations.

The present invention has the following advantages and good effect:

1. its logic of the present invention is simple, flexibly, is easy to realize.

2. the present invention is starting point according to the high performance characteristics of IMS network with the versatility, on the basis of the function of each equipment and agreement, can effectively reduce the memory space of user service archives data in not influencing the IMS network; Reduce the needed bandwidth of user service archives data sync of CSCF equipment room.

3. the present invention has extensive applicability.In reality realization and operating process, numerous IMS exploitations commercial city faces the excessive variety of problems of bringing of amount of user data, and a kind of compressing preservation method of user service archives will make numerous developers therefrom benefit.

Description of drawings

Fig. 1 is a step schematic diagram of the present invention;

Fig. 2 is a detailed step schematic diagram of the present invention.

Wherein:

A-subscriber equipment (UE);

B-master uses service call conversation controller (the main S-CSCF that uses);

C-home subscriber server (HSS);

The standby service call conversation controller of D-(standby S-CSCF)

English to Chinese:

The IP-Internet Protocol;

The IMS-IP multimedia subsystem, IMS;

The fusion of FMC-fixed communication and mobile communication;

The SIP-session initiation protocol;

The CSCF-call session controller;

P-CSCF-agent call conversation controller;

I-CSCF-inquiry call session controller;

S-CSCF-service call conversation controller;

The HSS-home subscriber server;

The UE-subscriber equipment;

The request of SAR-server-assignment;

The SAA-server-assignment is replied.

Embodiment

Describe in detail below in conjunction with drawings and Examples.

As Fig. 2, some steps among the present invention are achieved as follows in more detail:

1, about step (2)

Step (2) comprising:

(2.1) after the master receives register information flow with S-CSCF (B), can upgrade user registration state to HSS (C) by server-assignment request (SAR), and the request user service archives;

(2.2) after HSS (C) receives SAR,, upgrade user registration state, reply user service archives on (SAA) message band by server-assignment then according to request type and parameter query database.

2, about step (4)

Step (4) comprising:

(4.1) master sends to standby S-CSCF (D) to the user service archives of compression with S-CSCF (B).

(4.2) standby S-CSCF (D) returns a response to main with S-CSCF (B) after receiving user service archives.

After receiving the response of independently using S-CSCF (B), UE (A) has just learnt registration process success, has finished the compression and the backup of user service archives simultaneously.

Claims (3)

1. the store method of a user service archives in multimedia subsystem is characterized in that comprising the following steps:

(1) UE (A) sends log-on message to the main S-CSCF (B) of using when the IMS network registry;

(2) in the registration process of subscriber equipment, the main S-CSCF (B) that uses is from HSS (C) download user service profile data;

(3) master deposits after with S-CSCF (B) the user service archives data being compressed by the keyword text;

(4) master also adopts compress mode with S-CSCF (B) in the process of standby S-CSCF (D) transmission user service profile data backup;

(5) lead with S-CSCF (B) to response of succeeding in registration of UE (A) loopback.

Described UE (A) claims subscriber equipment, is the terminal equipment in IMS territory, is the promoter of IMS signaling message;

The described main S-CSCF of using (B) claims the master to use the service call conversation controller, is the core of IP multimedia subsystem, IMS, is positioned at home network, for subscriber equipment carries out session control and registration service;

Described HSS (C) claims home subscriber server, be the main data storage of all data relevant with service with the user in the IP multimedia subsystem, IMS, the data owner that is stored among the HSS (C) will comprise user identity, log-on message, access parameter and service trigger message;

Described standby S-CSCF (D) claims standby service call conversation controller, with main synchronous with S-CSCF (B) maintenance, the promptly main user service archives data of also compressing later on the user service archives data of S-CSCF (B) compression and preservation to standby S-CSCF (D) transmission.

2. by the store method of the described a kind of user service archives in multimedia subsystem of claim 1, it is characterized in that step (2):

(2.1) after the master receives register information flow with S-CSCF (B), can upgrade user registration state to HSS (C) by server-assignment request (SAR), and the request user service archives;

(2.2) after HSS (C) receives SAR,, upgrade user registration state, reply user service archives on (SAA) message band by server-assignment then according to request type and parameter query database.

3. by the store method of the described a kind of user service archives in multimedia subsystem of claim 1, it is characterized in that step (4):

(4.1) master sends to standby S-CSCF (D) to the user service archives of compression with S-CSCF (B);

(4.2) standby S-CSCF (D) returns a response to main with S-CSCF (B) after receiving user service archives;

After receiving the response of independently using S-CSCF (B), UE (A) has just learnt registration process success, has finished the compression and the backup of user service archives simultaneously.