WO2010075721A1

WO2010075721A1 - Method and system for ims user level controlling based on the subscription data

Info

Publication number: WO2010075721A1
Application number: PCT/CN2009/075323
Authority: WO
Inventors: 杨玉婕; 舒续祖
Original assignee: 华为技术有限公司
Priority date: 2009-01-04
Filing date: 2009-12-04
Publication date: 2010-07-08
Also published as: CN101489266A; CN101489266B

Abstract

A method and system for IMS user level controlling based on the subscription data are provided by the embodiment of the invention. The method includes the steps that: when receiving a registration request or session request of a user, a user level service controlling device obtains the user information corresponding to the user identifier, and respectively performs the QoS controlling, the registration user number controlling, or the concurrent session number controlling of the user level according to the obtained user information. The user information is stored in a user database (UDB) of the system when an account is opened by the user. By using the embodiment of the invention, the registration user number or the concurrent session number will be controlled. When the NASS system is not deployed in the IMS network, the user-accurate service controlling of the user can be performed according to the account opening subscription data information of the user.

Description

IMS user-level control method and system based on contract data. The application claims that the application number submitted on January 4, 2009 is 200910036410. 0, and the invention name is "an IMS user-level control method and system based on contract data" Priority of the Chinese Patent Application, the entire contents of which is incorporated herein by reference.

Technical field

The present invention relates to the field of network communication technologies, and in particular, to an IMS user level control method and system based on subscription data.

Background technique

At present, the IP Multimedia Subsystem (IMS: IP Multimedia Subsystem) network mainly provides users with reliable quality service (QoS: Quality of Service) through the Proxy Cal l Session Control Function (P-CSCF). Bandwidth/throughput, latency, jitter, packet loss rate, availability, and more. The QoS signaling control and resource allocation mechanism in the IMS network is independent of the session control protocol. Mainly complete the authorization/update/revoke of media resources, confirm bearer reservation, gate open/close, indicate bearer release/failure and other functions.

When fixed network access, application layer function (AF: Appl ication Function), which includes proxy call session control function (P-CSCF: Proxy-CSCF) or access network resource admission control function (A-RACF: Access-Resource Admi) Ssion Control Function ), need to obtain the location information of the user from the Network Attachment Subsystem (NASS), the subscription data (QoS Profi le ) describing the QoS indicators, the maximum number of contact addresses and the maximum number of concurrent sessions, and then QoS control can be performed accordingly, as well as controlling the number of registered users and the number of concurrent sessions.

For example, in the prior art, when the NASS subsystem is not deployed in the IMS network, the network QoS control process is implemented by the proxy call session control function (P-CSCF) control as shown in FIG. 1:

Step 1-2 indicates that the proxy call session control function P-CSCF obtains the user name, user IP, and media information from the session request protocol invitation (SDP offer: Session Description Protocol offer) after receiving the user's session request. Wait, then forward the session request to the network. Equipment

Steps 3-4 indicate that after the P-CSCF receives the session request response SDP answer returned by other devices on the network, the P-CSCF obtains the flow ID, the IP address of the user equipment UE, and the flow bandwidth information from the SDP answer. The P-CSCF then sends an AAR (Authorization Authentication Request) authorization request message to the Service Policy Decision Function (SPDF).

Steps 5, 6, and 7 indicate that the business policy decision function SPDF sends the authorization Q0S information to the Border Gateway Function (BGF: Border Gate Funtion). The BGF performs QoS control according to the authorized QOS information of the SPDF and the local idle resource, and sends a Go RPT (Go interface Report message) response to the SPDF. After receiving the response, the SPDF sends an AAA (Authorization Authentication Account) authorization response to the P-CSCF. information. In the QoS control process, the BGF can only determine whether resources can be reserved for users according to resource idle conditions, and cannot perform QoS control according to user rights or subscription information.

In the above-mentioned prior art, when the NASS system is not deployed in the IMS network, the AF cannot obtain the location information and the QoS profile data of the user. Therefore, the QoS control policy can be configured only based on a certain BGF, that is, accessing the IMS network from the same BGF. Users in the middle can only use the same QoS control policy. As a result, QoS resources that can be used by ordinary users who access the same BGF as home users or enterprise network users may be preempted by home users or enterprise network users, and their normal calls or other services are seriously affected.

In addition, when the NASS system is not deployed on the IMS network, the AF cannot obtain the maximum number of contact addresses and the maximum number of concurrent sessions of the user. The number of registered users and the number of concurrent sessions can only be controlled to the granularity of the network element. At the same time, enterprise network users or home users registered in this network element cannot control the number of contact addresses and concurrent sessions registered. If the number of contact addresses and concurrent sessions registered by enterprise network users or home users is very large, normal registration and session of ordinary users will be affected because the registration and session behavior of home users cannot be controlled.

In summary, when the NASS subsystem is not deployed in the IMS network, the application layer function AF of the communication system cannot obtain related user information corresponding to the user identifier, and performs precise service control at the relevant user level. Summary of the invention The embodiment of the present invention provides an IMS user-level control method and system based on subscription data. When the NASS subsystem is not deployed in the IMS network, the user-level service control device can obtain the account opening information of the user and perform the QoS to the user. Control, or register user count control, or concurrent session count control process.

The IMS user-level control method based on the subscription data provided by the embodiment of the present invention includes: when receiving the registration request or the session request of the user, the user-level service control device acquires the user information corresponding to the user identifier, and according to the acquired The user information is respectively performed at the user level QoS control, or the registered user number control, or the concurrent session number control, and the user information is stored in the user database UDB of the system when the user opens the account.

Further, the user information includes user location information and QoS profile data, and the user-level service control device performs user-level QoS control; or

If the user information includes the maximum number of contact addresses, the user-level service control device performs registration number control; or

The user information includes the maximum number of concurrent sessions, and the user-level service control device performs concurrent conference number control.

Further, the user location information and the QoS profile data are the same as the user location information and the QoS profile data provided by the NASS subsystem, respectively; or the user location information and the QoS profile data are the e2 interface and the Gq' interface of the IMS network, respectively. Part or all of the information provided.

Further, the user-level service control module is the initial session protocol SIP (Ses Initial

Protocol) Proxy, or application server AS; The SIP proxy includes proxy call session control function P_CSCF, service call session control function S-CSCF, query call session control function I-CSCFo

An IMS user-level control system based on subscription data, further comprising: a user database, configured to store user information corresponding to the user identifier;

a user-level service control device, configured to receive a registration request or a session request from a user User information corresponding to the user identifier is obtained in the user database, and user level QoS control, or registered user number control, or session number control is performed according to the obtained user information.

According to the embodiment of the present invention, when the NASS subsystem is not deployed in the IMS network, according to the account opening information of the obtained user, the SIP agent or the application server AS controls, and the service control of the user is performed accurately. For example, different QoS control policies are used for users accessing the same BGF to the IMS network to ensure reasonable allocation of network resources. Alternatively, for a plurality of enterprise network users or home users registered in the IMS network at the same time, the number of registered users or the number of concurrent sessions of the communication network can be controlled to ensure that normal registration and sessions of multiple users are not affected by interference.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings to be used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any inventive labor.

1 is a flow chart of QoS control when no NASS subsystem is deployed in an IMS network in the prior art; FIG. 2 is a flowchart of an IMS user-level control method based on subscription data according to an embodiment of the present invention; A flowchart of obtaining user information by P-CSCF control in Embodiment 1 of the method provided by the invention;

4 is a flowchart of a QoS control policy implemented by P-CSCF control in Embodiment 1 of the method provided by the present invention;

FIG. 5 is a flowchart of obtaining the user information and completing the QoS control policy by using the S-CSCF control in the second embodiment of the method provided by the present invention;

6 is a flowchart of obtaining user information through an AS and completing a QoS control policy in Embodiment 3 of the method provided by the present invention;

FIG. 7 is a flowchart of a process for obtaining user information through a SIP proxy and completing registration of a registered user number in Embodiment 4 of the method provided by the present invention;

FIG. 8 is a schematic diagram of the fifth embodiment of the method provided by the present invention, which acquires user information through a SIP proxy and completes Flow chart of processing the number of sessions;

FIG. 9 is a flowchart of a process for obtaining user information through an AS and performing concurrent conference number control in Embodiment 6 of the method provided by the present invention;

FIG. 10 is a schematic structural diagram of an IMS user-level control system based on subscription data provided by the present invention. detailed description

The present invention will be further described in conjunction with the drawings, but the embodiments of the accompanying drawings are not intended to limit the invention.

As shown in FIG. 2, an embodiment of the present invention provides an IMS user-level control method based on subscription data, including the following steps:

201. Acquire, by the user-level service control device, user information corresponding to the user identifier, where the user information is stored in the user database UDB of the system before the user opens the account.

When the user opens an account in the user database UDB, the user information corresponding to the user identifier is added to the user account opening data, that is, the subscription data including the user location information, the QoS profile data, the maximum contact address number, and the maximum number of concurrent sessions.

202. The user-level service control device performs user-level QoS control, or registered user number control, or concurrent session number control according to the acquired user information.

The user-level service control device performs user-level QoS control according to the obtained user location information and QoS Profi le data; or the user-level service control device performs registration user number control according to the obtained maximum contact address number; or the user level The service control device controls the number of concurrent sessions according to the maximum number of concurrent sessions obtained.

The user-level service control device is a SIP proxy or an application server AS; the SIP proxy includes a proxy call session control function P-CSCF, a service call session control function S-CSCF, and a call conference session control function I_CSCF.

The user location information and the QoS profile data are respectively the same as the user location information and the QoS profile data provided by the NASS subsystem; or the user location information and the QoS profile data are respectively provided by the e2 interface and the Gq' interface of the IMS network. Part or all of the content, real Flexible configuration can be configured according to QoS control requirements.

Specifically, as a first implementation manner of the foregoing method, when receiving a registration request or a session request of a user, acquiring, by using a P-CSCF in the SIP proxy, user identification information, such as an IMPI for user authentication (for example) IMS Private Identities) The identification information, the corresponding user location information and the QoS profile data, and user level QoS control. First, the processing flow of the P-CSCF control to obtain relevant user location information and QoS profile data is shown in Figure 3:

301, the user sends a registration request to the proxy call session control function P-CSCF;

302, the P-CSCF sends the user registration request to the query call session control function I-CSCF;

303. The I-CSCF sends the user registration request to the serving call session control function S-CSCF to complete user registration.

304. The S-CSCF sends a server allocation request SAR (Server Assigment Request) information to the user database UDB, and requests to obtain related user location information and QoS profile data.

305. The UDB returns to the S-CSCF by using a server allocation response SAA (Server Assigment Answer) information including related user location information and QoS profile data.

306. The S-CSCF returns a response message carrying the relevant user location information and the QoS profile data to the I-CSCF.

307. The I-CSCF returns a response message carrying the relevant user location information and the QoS profile data to the P-CSCF.

308. The P-CSCF returns the response information to the user.

Then, the process of the P-CSCF performing user-level QoS control according to acquiring relevant user location information and QoS profile data is as shown in FIG. 4 .

401. When the P-CSCF receives a request for sending a session, the P-CSCF generates an AAR authorization request message that includes user location information and QoS profile data.

402. The P-CSCF sends the AAR information carrying the user location information and the QoS profile data to the service policy decision function SPDF.

403. The SPDF sends the AAR information to the access network resource admission control function A-RACF. 404. Determine, by the A-RACF, a QoS control policy, and return the SPDF to the SPDF by using AAA information.

405. The SPDF sends the QoS control policy to a network device with a Qos control function, that is, a border gateway function BGF, and performs network QoS control by interacting with the BGF.

406. The BGF feeds back the control response information to the SPDF.

As a second implementation manner of the foregoing method, when receiving the registration request or the session request of the user, the service call session control function S-CSCF controls the user identification information, such as the IMPI identification information of the user, from the user database UDB. The corresponding user location information and QoS profile data, and the user level QoS control are as shown in FIG. 5:

501, the user sends a registration request to the service call session control function S-CSCF;

502. The S-CSCF sends the SAR information to the user database UDB to query related user location information and QoS profile data.

503. The user database UDB returns the SAA information carrying the relevant user location information and the QoS Profi le data to the S-CSCF.

504. The S-CSCF sends a response information 200 of the user registration to the user.

505. When the S-CSCF receives and processes a user's session request, according to the obtained QoS.

The profile data determines whether the media type or the codec information in the user session request is signed;

506. If the S-CSCF determines that the subscription is not signed, reject the current session in the response information 300 returned to the user, or modify the media type or codec information in the user session request.

It should be noted that the authentication process and the processing procedures of the P-CSCF and the I-CSCF are omitted in the above steps 501-504.

As a third implementation manner of the foregoing method, when receiving a registration request or a session request of a user, the application server AS controls to obtain user identification information from the user database UDB, for example, an IMPU (IMS) for SIP signaling routing. The information of the user-level QoS control is as shown in FIG. 6 : 601. The S-CSCF receives and processes the session request of the user.

602. The S-CSCF sends the SAR information to the user database UDB to query related user location information. And QoS Profile data;

603, the user database UDB returns the SAA information carrying the relevant user location information and the QoS profile data to the S-CSCF;

604. When the S-CSCF receives the user session request, forwarding the session request to trigger the application server AS.

605. The application server AS sends a user data request UDR (User Data Request) information to the user database UDB, and queries the user subscription information including the QoS profile data.

606, the user database UDB returns user data response UDA (User Data Answer) information carrying relevant user location information and QoS profile data to the application server AS;

607. The application server AS determines, according to the QoS profile data, whether the media type or codec information in the user session request is signed, and if not signed, rejects the session in a response returned to the S-CSCF, or modifies the user. Media type or codec information in the session request;

608. The S-CSCF forwards the response to the user.

When receiving the registration request or the session request of the user, the number of the maximum contact address corresponding to the user identification information, such as the IMPU identification information for SIP signaling routing, is obtained from the user database UDB through the SIP proxy control. The processing flow for controlling the number of registered users is shown in Figure 7:

701. The user sends a registration request to the SIP proxy.

702. When the SIP proxy receives the user registration request, send the SAR information to the user database UDB, and query the user identification information, such as the maximum number of contact addresses corresponding to the IMPU.

703. The user database UDB returns the SAA information carrying the maximum number of contact addresses to the SIP proxy, and the SIP proxy determines whether the number of contact addresses of the registered IMPU corresponding to the locally recorded user is greater than or equal to the maximum number of contact addresses opened by the user. Yes, this registration is rejected; otherwise, this registration is performed;

704. The SIP proxy notifies the user of the judgment processing result.

Controlling slave data through SIP proxy when receiving a user's registration request or session request The process of obtaining the maximum number of concurrent sessions corresponding to the user identification information in the library UDB, and performing the control of the number of concurrent sessions includes:

801. The user sends a session request to the SIP proxy.

802. When the SIP proxy receives the user session request, querying the user identifier information, such as the maximum number of concurrent sessions corresponding to the IMPU identifier information, by sending the SAR information to the user database UDB.

803. The user database UDB returns the SAA information that carries the maximum number of concurrent sessions to the SIP proxy, and determines whether the number of concurrent sessions corresponding to the user identifier information that is locally recorded is greater than or equal to the maximum number of concurrent sessions opened by the user. Reject this session request; otherwise, this session;

804. The SIP proxy notifies the user of the judgment processing result.

When receiving the registration request or the session request of the user, the application server AS controls to obtain the maximum number of concurrent sessions corresponding to the user identification information, such as the IMPU identification information of the user, from the user database UDB, and performs the process of controlling the number of concurrent sessions. The process is shown in Figure 9:

901, the user forwards the session request to the application server AS through the S IP proxy;

902. When the application server AS receives the user session request, send the UDR information to the user database UDB, and query the maximum number of concurrent sessions corresponding to the user identifier information.

903. The user database UDB returns the UDA information that carries the maximum number of concurrent sessions to the application server AS. The application server AS determines whether the number of concurrent sessions corresponding to the IMPU recorded by the local device is greater than or equal to the maximum number of concurrent sessions opened by the user. If yes, reject this session request; otherwise, proceed to this session;

904. The application server AS notifies the user of the determination processing result.

It should be noted that when the NASS subsystem is deployed in the IMS network, the method described in all the foregoing embodiments of the present invention may also be used to obtain user information corresponding to the user identification information, to perform QoS control to the user, or to register the user. Number control, or concurrent session number control process.

An embodiment of the present invention further provides an IMS user-level control system based on subscription data. As shown in FIG. 10, the system includes:

a user database 10, configured to store user information corresponding to the user identifier; The user-level service control device 20 is configured to obtain user information corresponding to the user identifier from the user database 10 when receiving the registration request or the session request of the user, and perform user-level QoS control according to the acquired user information. Or register the number of users to control, or send the number of sessions to control.

The user-level service control device 20 is a SIP proxy or an application server AS; the SIP proxy includes a proxy call session control function P_CSCF, a service call session control function S-CSCF, and an inquiry call session control function I_CSCF.

It should be noted that, according to the requirements of the user QoS control process, or the number of registered users, or the number of concurrent sessions, the system can flexibly configure other hardware units or servers in actual operation, for example, during the QoS control process for the user. Configure the border gateway function BGF, access network resource admission control function A-RACF.

The above-mentioned IMS user-level control method and system based on subscription data can be used when the NASS system is not deployed in the IMS network, according to the account opening information of the user, through the P-CSCF or S-CSCF in the SIP proxy, or the application server AS. Control, accurate to the user's QoS control process, and for a number of enterprise network users or home users registered in the IMS network at the same time, you can control the number of registered users or concurrent sessions, to ensure the normal registration and session of multiple users Will be affected by interference.

The above is a preferred embodiment of the present invention, and the scope of the present invention is not limited thereto. It should be noted that those skilled in the art can also omit the principles of the present invention without departing from the scope of the present invention. A number of improvements and modifications are also made, which are also considered to be within the scope of the invention.

Claims

Claim

An IMS user-level control method based on subscription data, comprising: when receiving a registration request or a session request of a user, the user-level service control device acquires user information corresponding to the user identifier, and according to the acquired The user information is respectively performed with user-level quality of service QoS control, or registered user number control, or concurrent session number control, and the user information is stored in a user database UDB of the system when the user opens an account.

2. The method of claim 1 wherein:

The user information includes user location information and QoS profile data, and the user-level service control device performs user-level QoS control; or

The user information includes a maximum number of contact addresses, and the user-level service control device performs registration number control; or

The user information includes a maximum number of concurrent sessions, and the user-level service control device performs concurrent session number control.

The method according to claim 1, wherein the user-level service control device is a SIP proxy or an application server AS; the SIP proxy includes a proxy call session control function P-CSCF, and a service call session control function. S-CSCF, Query the call session control function I_CSCF.

The method according to claim 3, wherein the acquiring user information corresponding to the user identifier, and performing user-level QoS control according to the obtained user information, includes: the user passing the P-CSCF Registering on the S-CSCF;

Receiving the user's session request, the S-CSCF obtains relevant user location information and QoS profile data from the user database UDB, and returns the data to the P-CSCF;

The P-CSCF sends the user location information and the QoS profile data to the access network resource admission control function A-RACF through the service policy decision function SPDF, and the A-RACF determines the QoS control policy and returns the SPDF to the SPDF;

The SPDF sends the QoS control policy to the border gateway function BGF with the QoS control function, and performs network QoS control by using the BGF.

The method according to claim 3, wherein the obtaining user information corresponding to the user identifier, and performing user-level QoS control according to the obtained user information comprises:

The S-CSCF receives and processes a user's session request, obtains related user location information and QoS profile data from the user database UDB, and triggers the application server AS by forwarding the user session request;

The application server AS accesses the user database UDB, and queries the user subscription information including the related user location information and the QoS Profi le data, and determines, according to the QoS profile data, whether the media type or the codec information in the user session request is signed, if If not signed, the current session is rejected in the response returned to the S-CSCF, or the media type or codec information in the user session request is modified;

The S-CSCF forwards the response to the user.

The method according to claim 3, wherein the obtaining user information corresponding to the user identifier, and performing user-level QoS control according to the obtained user information includes:

The user registers with the S-CSCF, and obtains related user location information and QoS profile data from the user database UDB through the S-CSCF;

The S-CSCF receives and processes a session request of the user, and determines, according to the obtained QoS Profi le data, whether the media type or the codec information in the user session request is signed, and if not signed, returns the user to the user. The session rejects the session, or modifies the media type or codec information in the user session request.

The method according to claim 3, wherein the obtaining the user information corresponding to the user identifier, and performing the number of registered users according to the obtained user information comprises:

When the SIP proxy receives the user registration request, the number of the maximum contact addresses corresponding to the user identification information is obtained from the user database UDB;

The SIP proxy determines whether the number of registered user contact addresses recorded locally is greater than or equal to the maximum number of contact addresses opened by the user, and if so, rejects the registration; otherwise, the registration is performed.

8. The method according to claim 3, wherein the obtaining corresponds to a user identifier The user information, and the concurrent session number control according to the obtained user information includes:

And when the SIP proxy receives the user registration request, acquiring the maximum concurrent session number corresponding to the user identification information from the user database UDB;

After receiving the user session request, the SIP proxy determines whether the number of concurrent sessions corresponding to the user identifier information that is locally recorded is greater than or equal to the maximum number of concurrent sessions opened by the user, and if yes, rejects the session request; otherwise, the current session is performed. Conversation.

The method according to claim 3, wherein the obtaining the user information corresponding to the user identifier, and performing the concurrent session number control according to the obtained user information comprises:

When the application server AS receives the user session request transmitted from the SIP proxy, the maximum concurrent session number corresponding to the user identification information is obtained from the user database UDB;

The application server AS determines whether the number of concurrent sessions corresponding to the user identification information recorded by the user is greater than or equal to the maximum number of concurrent sessions opened by the user, and if yes, rejects the session request; otherwise, the session is performed.

An IMS user-level control system based on the subscription data, comprising: a user database, configured to store user information corresponding to the user identifier;

The user-level service control device is configured to: obtain user information corresponding to the user identifier from the user database, and perform user-level QoS control according to the obtained user information, when receiving the registration request or the session request of the user, Or register the number of users to control, or send the number of sessions to control.

The subscription data-based IMS user-level control system according to claim 10, wherein the user-level service control device is a SIP proxy or an application server AS; the SIP proxy includes a proxy call session control function P_CSCF The service call session control function S-CSCF queries the call session control function I_CSCF.