WO2007062570A1

WO2007062570A1 - Method for multimedia service and multimedia resource function controller

Info

Publication number: WO2007062570A1
Application number: PCT/CN2006/002759
Authority: WO
Inventors: Haiyan Jian
Original assignee: Huawei Technologies Co., Ltd.
Priority date: 2005-11-30
Filing date: 2006-10-18
Publication date: 2007-06-07
Also published as: CN1870640A; CN100527741C

Abstract

A method for multimedia service, includes: MRFC obtains and stores the corresponding relation between the identification of MRFP and the specific service property information (301), then when MRFC receives a service request sent from S-CSCF, and detects the specific service property information carried by the service request (303), based on the corresponding relation between the identification of MRFP and the specific service property information, MRFC searches the MRFP corresponding to the specific service property information carried by the service request in the present MRFPs which can provide the service (305), then sends the service request to the MRFP searched (306), and the MRFP processes the service after receiving the service request (307); and a multimedia resource function controller MRFC for multimedia service, includes: the specific service property information storing module and MRFP determining module.

Description

Method for multimedia service and multimedia resource function controller

The present invention relates to the field of service provision technologies in an IP multimedia subsystem, and in particular, to a method for performing multimedia services in an IP multimedia subsystem and a multimedia resource function controller. Background of the invention

The IP Multimedia Subsystem (IMS) is a subsystem of the Wideband Code Division Multiple Access (WCDMA) network added by the 3rd Generation Partnership Organization (3GPP) during the R5 phase, which provides audio, video, text, chat, etc. The internal multimedia services, the related network entities include: call session control function (CSCF Media Gateway Control Function (MGCF), Multimedia Resource Function (MRF), etc. IMS has become the target and access in the actual application and development process. Unrelated subsystems, peer-to-peer IP communications can be established between IMS through various types of terminals, and the required services can be obtained. In addition to supporting session management, IMS can also provide the functions necessary to complete the service, such as: Registration, security, billing, bearer control, roaming, etc.

FIG. 1 is a network architecture diagram of an IMS providing multimedia services, as shown in FIG. 1, which mainly includes: an application server (AS), a service CSCF (S-CSCF), a multimedia resource function controller (MRFC), and a multimedia resource function processor. (MRFP), the main functions of each entity are as follows:

The MRFC is configured to receive a Session Initiation Protocol (SIP) control command from the S-CSCF, and control the media resources on the MRFP according to the SIP control command, including: mixing a input media stream, for example: a conference; The processing of the transmission source, for example: multimedia announcement; processing of media stream reception, such as audio codec conversion, media analysis, and the like. The MRFC also supports enhanced media control features such as advanced conferencing, interactive voice response (IVR), and more. The MRFC may also generate billing information related to the media resource using the MRFP, and the The billing information is transmitted to the billing collection function (CCF).

MRFP: Used to provide media resources controlled by MRFC; Control Mb reference point based bearer; Support multi-party media stream mixing, for example: Multi-party conference; Support media stream transmission source processing, for example: Multimedia announcement; Support media stream processing For example: codec conversion, media analysis, etc.; flow control, ie: management of access rights to shared resources in a conference environment.

AS: Management function for providing conference prohibition function and prohibition information, for example: setting conference start time, conference duration, conference participant list, etc.

The Mr interface between the S-CSCF and the MRFC supports SIP. The Mp interface between the MRFC and the MRPP supports the H.248 protocol and has an extended function. The MRPP transmits multimedia services to the next-level entity through the Mb interface.

At present, the process of providing multimedia services by IMS is as shown in FIG. 2, which specifically includes: Step 201: The MRFC adopts a process of resource management control, including: exiting/entering service notification, MRFP status, and capability auditing, and acquiring and saving the status of the MRPP. Information, as well as status information for various media resources on the MRPP.

The status information of the MRFP refers to: information on whether the current MRFP is available, and the status information of various media resources on the MRFP refers to: information on whether various media resources on the MRFP are available.

Step 202: After receiving the service request from the S-CSCF, the MRFC searches for the available MRFP according to the state information of the MRFP saved by itself.

Step 203: The MRPC searches for available MRFPs of the media resources corresponding to the service type in the found MRFPs according to the service type carried by the service request and the status information of the various media resources on the MRFP. And select one MRFP in the found MRFP.

Step 204: The MRFC sends the service request to its selected MRFP. Step 205: After receiving the service request, the MRFP performs a service service.

From the above, when the MRFC selects the MRFP, it only considers whether the M PP is available and whether the MRFP has the media resources that can provide the requested service. This only provides the service service from the perspective of business success or failure. The method has the following disadvantages: It may cause unnecessary waste of network resources, and may also reduce the quality of service services. For example, if the user currently in the A area initiates a service request, according to the foregoing process, after receiving the service request, the MRPC detects that the MRFP currently available and has the media resource corresponding to the requested service includes: MRFP1 located in area A MRFP2 located in area B. At this time, MRPP selects one of MRFP1 and MRFP2 to complete the service. If MRFP2 is selected, compared with the selected MRFP1, when the service is performed, MRFP2 is not in the same area as the user. Then, when performing signaling and media stream interaction with the service, it will occupy more bearer network resources, reduce the utilization of network resources, and increase processing delay and reduce the service service shield. Summary of the invention

The present invention provides a method for performing multimedia services and an MRFC to improve network resource utilization rate and improve service quality.

The technical solution of the present invention is implemented as follows:

A method of conducting multimedia services, including:

The MRFC obtains and stores the correspondence between the MRFP identifier and the special service attribute information. After the MRFC receives the service request and detects that the service request carries the special service attribute information, the MRFP identifies the corresponding relationship between the MRFP identifier and the special service attribute information. The MRFP that can provide the service searches for the MRFP corresponding to the special service attribute information carried by the service request, and then sends the service request to the found MRFP. After receiving the service request, the MRFP performs the service. The special service attribute information is carried in the extended parameter of the existing header field of the service request message, or carried in the extended parameter of the existing message body of the service request message, or carried in the extended header field of the service request message, or It is carried in the extended message body of the service request message.

The special service attribute information is one or any combination of geographical location information, media capability information, and control capability information.

The geographical location information is latitude and longitude information;

The MRFP searches for the MRFP corresponding to the special service attribute information carried by the service request, which is specifically:

The MRFC compares the latitude and longitude information carried by the service request with the latitude and longitude information of each MRFP saved by itself, and uses the MRFP corresponding to the latitude and longitude of the smallest difference as the selected MRFP.

The geographical location information is visit area information;

The MRFC performs level matching with the area information to which each MRFP is stored according to the level of the visited area information carried by the service request, and uses the MRPP corresponding to the most matching area information as the selected MRFP.

When the special service attribute information carried by the service request is geographical location information, the geographical location information is carried in the access network identification header field and/or the access network information header field in the service request.

The MRFC acquires and stores the correspondence between the MRFP identifier and the special service attribute information, specifically:

Configuring a correspondence between the MRFP identifier and the special service attribute information on the MRFC, and the MRFC saves the corresponding relationship;

Or: MRFP actively reports its special business to the MRFC after it starts up. Sex information, after receiving the special service attribute information, the MRFC saves the correspondence between the MRFP identifier and the special service attribute information;

Or: After the MRFC starts itself, it actively obtains special service attribute information from the MRFP, and saves the correspondence between the MRFP identifier and the special service attribute information.

An MRFC for multimedia services, comprising: a special service attribute information storage module and an MRFP determination module, wherein:

The special service attribute information storage module is configured to save the correspondence between the MRFP identifier and the special service attribute information, and send the MRFP identifier corresponding to the special service attribute information saved to the MRFP determination module according to the request;

The MRFP determining module is configured to obtain the MRFP identifier from the special service attribute information storage module according to the special service attribute information carried by the service request sent by the S-CSCF, and find that the service request is currently available and can provide the service request. The MRFP of the media resource of the indicated service type, determining the 'MRFP' for performing the service request, and sending the service request to the MRFPo

The special service attribute storage module is further configured to: after the self-starting, actively acquire the special service attribute information from the MRFP; or receive the special service attribute information sent by the MRFP.

Compared with the prior art, the present invention acquires and stores the correspondence between the MRFP identifier and the special service attribute information by using the MRFC, and then the MRFC receives the service request sent by the S-CSCF, and detects that the service request carries the special service attribute information. After the MRFP identifier is associated with the special service attribute information, the MRFP corresponding to the special service attribute information carried by the service request is searched for in the MRFP that is currently available and can provide the service, and then the service request is sent to the search. After the MRFP receives the service request, the MRFP conducts business services, rationally utilizes the network resources, and improves the business service shield. BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 is a network architecture diagram of IMS providing multimedia services;

2 is a flow chart of a multimedia service performed by an IMS in the prior art;

FIG. 3 is a flowchart of a multimedia service performed by an IMS according to an embodiment of the present invention; FIG. 4 is a schematic diagram of an MRFC for performing a multimedia service according to an embodiment of the present invention. Mode for carrying out the invention

The core idea of the present invention is: The MRFC acquires and stores the correspondence between the MRFP identifier and the special service attribute information. When the MRFC receives the service request sent by the S-CSCF, if the MRCC detects that the service request carries the special service attribute information, In the MRFP that is available and can provide the media resource corresponding to the requested service, an MRFP corresponding to the special service attribute is selected to complete the service.

The special service attribute information may be one or any combination of geographical location information, media capability information, control capability information, and the like. The media capability information may be codec type information, and the control capability information may be fast forward control capability information, fast reverse control capability information, and the like.

The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

FIG. 3 is a flow chart of the IMS performing multimedia service provided by the present invention. As shown in FIG. 3, the specific steps are as follows:

Step 301: The MRFC acquires and saves the correspondence between the MRFP and the special service attribute information.

The special service attribute information may be one or any combination of geographical location information, media capability information, control capability information, and the like.

The MRFC can obtain the correspondence between the MRFP identifier and the special service attribute information in the following manner:

One is that the network administrator or the like associates the MRFP identifier with the special service attribute information. The MRFC is statically configured to the MRFC, and the MRFC saves the corresponding relationship. The other is that the MRFP reports its own special service attribute information to the MRFC after it is started. After receiving the special service attribute information, the MRFC saves the MRFP identifier. The corresponding relationship between the special service attribute information of the MRFP; and the MRFC obtains the special service attribute information from the MRFP after the self-starting, and after receiving the special service attribute information returned by the MRPP, the MRFP identifier is saved. The correspondence between the special service attribute information that the MRFP has.

Step 302: The MRPC acquires and saves the status information of the MRFP and the status information of various media resources on the MRFP.

Step 303: The MRFC receives a service request sent by the S-CSCF, where the service request carries the service type requested by the user, the special service attribute information of the user, and the like.

Here, the service request message needs to be extended to carry the special service attribute information. Specifically, the parameter can be extended to the existing header field of the service request message, that is, the special service attribute information is added in the existing header field. The parameter can also be extended to the header field of the service request message, that is, the header field that can carry the special service attribute information is added to the existing service request message; The parameter that can carry the special service attribute is added to the existing message body of the service request message. The message body of the service request message can also be extended, that is, the message body that can carry the special service attribute information is added to the existing service request message. For example: When the special service attribute information is geographical location information, in the header field of the service request message, such as: access network identifier (P-Visited-Network-ID) header field and/or access network information (P-Access-Network) -Info ) The location information is carried in the header field, or the header field that carries the geographical location information is added to the service request message. At the same time, the Mr interface needs to be extended to support the transmission of service request messages carrying special service attribute information.

Step 304: The MRFC detects that the service request message carries special service attribute information, and the MRFC firstly stores the service type information carried by the service request message, and the self-preserved information. The MRFP status information, the status information of the media resources on the MRFP, and the MRFPs that are currently available and available for the media resources corresponding to the service type information.

Step 305: The MRFC searches for the MRFP corresponding to the special service attribute information in the MRFP found in step 304 according to the correspondence between the MRFP identifier and the special service attribute information saved by the MRFC.

Specifically, if the special service attribute information is the geographic location information, the MRFC may, according to the correspondence between the MRFP identifier and the geographical location information saved by the MRFC, the geographic location corresponding to the geographical location information carried in the service request message and the corresponding relationship. The geographic location corresponding to the geographic location information is compared, and finally the MRFP pointed to by the nearest distance is selected to complete the service.

The geographical location information may be latitude and longitude information or visit area information, and the like. When the latitude and longitude information is used, the MRFC only needs to select a MRFP whose latitude and longitude differs from the user's latitude and longitude according to the latitude and longitude information of the user carried in the service request message to complete the service;

When visiting the area information, the visited area is divided according to the size of the area, such as: the first area is China, and the second area is: North China, East China, Northwest, etc. Subdivided areas of the secondary area, such as: Further dividing the North China area into Beijing, Tianjin, etc., and so on. The service request message sent by the S-CSCF is the lowest level of the visited area information that the user is located. After receiving the service request message, the MRFP, according to the information of each level of the MRFP that it holds, according to the regional level From low to high, find the MRFP whose area matches the visiting area where the user is located to complete the service. For example: The geographic location information carried in the service request message is: Haidian District, the MRFC first searches for the MRFP of the Haidian District in its own area. If it is not found, it searches for the MRFP whose area is Beijing, and will find it. MRFP is used as the MRFP to complete this business.

If the special service attribute information is media capability information and control capability information, the MRFC will In the corresponding relationship between the MRFP identifier and the media capability information, and the MRFP identifier and the control capability information, the MRFP that can provide the media capability information and the control capability information corresponding to the media capability information and the control capability information carried in the service request message is searched for. .

Step 306: The MRFC sends the service request message to the finally found MRFP. If there are multiple MRFPs corresponding to the special service attribute information, the MRFC may select one of the plurality of MRPPs to complete the service.

Step 307: After receiving the service request message, the MRFP performs a service service.

4 is a schematic diagram of the composition of an MRFC for performing multimedia services according to an embodiment of the present invention. As shown in FIG. 4, the method mainly includes: a special service attribute information storage module 41 and an MRPP determining module 42, wherein:

The special service attribute information storage module 41 is configured to save the corresponding relationship between the MRFP identifier and the special service attribute information, and return the corresponding MRFP identifier to the MRFP determining module 42 according to the special service attribute information sent by the MRFP determining module 42.

Further, the special service attribute information storage module 41 is configured to receive the special service attribute information sent by the MRFP actively; or, after starting itself, actively obtain the special service attribute information from the MRFP.

The MRFP determining module 42 is configured to save state information of each MRFP and status information of various media resources on the MKFP, and when receiving the service request message sent by the S-CSCF and carrying the special service attribute information, according to the message carrying The service type information itself finds the MRFP that is currently available and can provide the media resource corresponding to the service type information, and sends the special service attribute information to the special service attribute information storage module 41, according to the searched The MRFP and the MRFP identifier returned by the special service attribute information storage module 41 determine the MRFP for performing the current service request, and send the service request message to the MRFPo.

The above is only the embodiment of the process and method of the present invention, and is not intended to limit the present invention. Any modifications, equivalents, improvements, etc. made within the spirit and scope of the invention are intended to be included within the scope of the invention.

Claims

Claim

A method for performing a multimedia service, comprising:

The multimedia resource function controller MRFC acquires and saves the correspondence relationship between the multimedia resource function processor MRFP identifier and the special service attribute information;

After receiving the service request, the MRFC detects that the service request carries the special service attribute information, and according to the correspondence between the MRFP identifier and the special service attribute information, searches for the special carried with the service request in the MRFP that can provide the service. The MRPP corresponding to the service attribute information is then sent to the found MRFP, and the MRFP performs the service after receiving the service request.

2. The method according to claim 1, wherein the special service attribute information is carried in an extended parameter of an existing header field of the service request message, or an extended parameter of an existing message body carried in the service request message. Medium, or carried in the extended header field of the service request message, or carried in the extended message body of the service request message.

The method according to claim 1, wherein the special service attribute information is one or any combination of geographical location information, media capability information, and control capability information.

4. The method according to claim 3, wherein the geographical location information is transit time information;

The MRFC compares the latitude and longitude information carried by the service request with the latitude and longitude information of each MRFP saved by itself, and uses the MRFP corresponding to the latitude and longitude information having the smallest phase difference as the selected MRFP.

The method according to claim 3, wherein the geographical location information is visit area information; The MRFP corresponding to the special service attribute information carried by the service request is specifically:

The MRFC performs level matching with the area information to which each MRFP is stored according to the level of the visited area information carried by the service request, and uses the MRFP corresponding to the most matching area information as the selected MRFP.

The method according to claim 3, wherein when the special service attribute information carried by the service request is geographical location information,

The geographic location information is carried in an access network identification header field and/or an access network information header field in a service request.

The method according to claim 1, wherein the MRFC acquires and saves the correspondence between the MRFP identifier and the special service attribute information as follows:

Configuring a correspondence between the MRFP identifier and the special service attribute information on the MRJFC, and the MRFC saves the corresponding relationship;

Or: MRFP reports its own special service attribute information to the MRFC after it is started. After receiving the special service attribute information, the MRFC saves the correspondence between the MRFP identifier and the special service attribute information.

Or: After the MRFC starts itself, it actively obtains special service attribute information from the MRJFP, and saves the correspondence between the MRFP identifier and the special service attribute information.

8. A MRFC for performing multimedia services, comprising: a special service attribute information storage module and an MRFP determination module, wherein:

The special service attribute information storage module is configured to save the correspondence between the MRFP identifier and the special service attribute information, and send the MRFP identifier corresponding to the special service attribute information saved by the MRFP to the MRFP determination module according to the request;

The MRPP determining module is configured to obtain the MRFP identifier from the special service attribute information storage module according to the special service attribute information carried by the service request sent by the S-CSCF, and combine The MRFP that finds the currently available media resource of the service type indicated by the service request, determines the MRJFP that performs the service request, and sends the service request to the MRFPo.

The MRFC according to claim 8, wherein the special service attribute storage module is further configured to: after the self-starting, actively obtain special service attribute information from the MRPP; or receive a special service actively sent by the MRFP. Attribute information.