CN1870640A - Method for multimedia service - Google Patents

Abstract

The invention discloses a method for performing multimedia services. The corresponding relationship between MRFP and special service attribute information is acquired and stored by MRFC, and then when MRFC receives a service request from S-CSCF and detects that the service request carries special services After the attribute information, according to the corresponding relationship between the MRFP and the special service attribute information, in the current MPFP that can provide the service, search for the MRFP corresponding to the special service attribute information carried by the service request, and then send the service request to the found MRFP, after receiving the business request, the MRFP performs business services, rationally utilizes network resources, and improves business service quality.

Description

A method for performing multimedia services

technical field

The invention relates to the technical field of service provision in the IP multimedia subsystem, in particular to a method for performing multimedia services in the IP multimedia subsystem.

Background technique

IP Multimedia Subsystem (IMS) is a subsystem in the Wideband Code Division Multiple Access (WCDMA) network added by the Third Generation Partnership Organization (3GPP) in the R5 stage, which can provide audio, video, text, chat, etc. The relevant network entities include: Call Session Control Function (CSCF), Media Gateway Control Function (MGCF), Multimedia Resource Function (MRF) and so on. In the actual application and development process, IMS has tended to become a subsystem that has nothing to do with access. Various types of terminals can establish peer-to-peer IP communication through IMS and obtain required services. In addition to supporting session management, IMS can also provide functions necessary to complete services such as: registration, security, billing, bearer control, roaming, etc.

Figure 1 is a network architecture diagram of IMS providing multimedia services, as shown in Figure 1, it mainly includes: Application Server (AS), Serving CSCF (S-CSCF), Multimedia Resource Function Controller (MRFC) and Multimedia Resource Function Processor (MRFP), the main functions of each entity are as follows:

MRFC: used to receive the 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 of input media streams such as: conference, sending media streams Source processing such as: multimedia announcements, processing of media stream reception such as: audio codec conversion, media analysis, etc. MRFC also supports enhanced media control functions such as: advanced conferences, interactive voice response (IVR), etc.; MRFC also supports Charging information related to media resources using the MRFP may be generated and communicated to a Charging Collection Function (CCF).

MRFP: used to provide media resources controlled by MRFC; control the bearer based on the Mb reference point; support the mixing of multi-party media streams such as: multi-party conference; support the processing of media stream sending sources such as: multimedia announcements; support the processing of media streams such as: Codec conversion, media analysis, etc.; flow control is to manage the access rights of shared resources in the conference environment.

AS: It is used to provide the meeting ban function and the management function of forbidden information, such as: setting the meeting start time, meeting duration, meeting participant list, etc.

The Mr interface between S-CSCF and MRFC supports SIP, the Mp interface between MRFC and MRFP supports H.248 protocol, and has expansion functions, and MRFP transmits multimedia services to the next-level entity through the Mb interface.

At present, the flow of multimedia services provided by the IMS is shown in Figure 2, which specifically includes:

Step 201: The MRFC acquires and saves the status information of the MRFP and the status information of various media resources on the MPFP through the resource management control process including: exit/entry service notification, MRFP status and capability audit and other processes.

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 MPFP 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 available MRFPs according to the state information of the MRFPs stored by itself.

Step 203: According to the service type carried by the service request and the state information of various media resources on the MPFP saved by the MRFC, the MRFC searches for the available MRFP of the media resource corresponding to the service type in the found available MRFP, and finds out Select one of the MRFPs.

Step 204: MRFC sends the service request to the MRFP selected by itself.

Step 205: After receiving the service request, the MRFP performs service.

As mentioned above, when MRFC selects an MRFP, it only considers whether the MRFP is available and whether the MRFP has media resources that can provide the requested service. This method of providing business services only from the perspective of business success or failure has The following disadvantages: may cause unnecessary waste of network resources, and may also reduce business service quality. For example: assume that a user currently in area A initiates a service request. According to the above process, after the MRFC receives the service request, it detects that the MRFPs that are currently available and have media resources corresponding to the requested service include: MRFP1 located in area A and MRFP2 is located in area B. At this time, MRFP will choose one of MRFP1 and MRFP2 to complete this service. If MRFP2 is selected, compared with MRFP1, when performing services, MRFP2 and the user are not in the same area. , then when interacting with service-related signaling and media streams, more bearer network resources will be occupied, the utilization rate of network resources will be reduced, processing delay will be increased, and service quality will be reduced.

Contents of the invention

In view of this, the main purpose of the present invention is to provide a method for performing multimedia services, so as to improve network resource utilization and service quality.

In order to achieve the above object, technical solution of the present invention is achieved in that way:

A method for performing multimedia services, the method comprising:

A. MRFC acquires and saves the corresponding relationship between MRFP and special service attribute information;

B. After the MRFC receives the service request sent by the S-CSCF and detects that the service request carries special service attribute information, according to the corresponding relationship between the MRFP and the special service attribute information, in the current MPFP that can provide the service, Find the MRFP corresponding to the special service attribute information carried by the service request, and then send the service request to the found MRFP, and the MRFP will perform the service after receiving the service request.

The special service attribute information is geographic location information or control capability information.

The special service attribute information carried in the service request in step B is: geographic location information,

The MRFC described in step B searches for the MRFP corresponding to the special service attribute information carried by the service request specifically as follows:

The MRFC compares the distance between the geographic location corresponding to the geographic location information carried in the service request and the geographic location corresponding to the geographic location information in the corresponding relationship according to the correspondence between the MRFP and the geographic location information stored by itself, and finally selects the closest The distance points to the MRFP in the correspondence.

The special service attribute information carried in the service request in step B is: geographic location information,

And the geographic location information is carried in the access network identification header field and/or the access network information header field in the service request.

The special service attribute information carried in the service request in step B is: geographic location information,

The method further includes: presetting that the service request includes a header field capable of carrying geographic location information,

The geographic location information is carried in a header field capable of carrying geographic location information in the service request.

Described step A specifically is:

The corresponding relationship between the MRFP and the special service attribute information is configured on the MRFC, and the MRFC stores the corresponding relationship.

Described step A specifically is:

After the MRFP starts itself, it actively reports its own special service attribute information to the MRFC. After receiving the special service attribute information, the MRFC saves the corresponding relationship between the MRFP and the special service attribute information.

Compared with the prior art, the method provided by the present invention obtains and saves the corresponding relationship between MRFP and special service attribute information through MRFC. Afterwards, when MRFC receives a service request from S-CSCF and detects that the service request carries special After the service attribute information, according to the corresponding relationship between the MRFP and the special service attribute information, search for the MRFP corresponding to the special service attribute information carried by the service request in the currently available MPFP that can provide the service, and then send the service request to After the found MRFP receives the service request, the MRFP performs the service, rationally utilizes the network resources, and improves the service quality of the service.

Description of drawings

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

FIG. 2 is a flow chart of multimedia services performed by IMS in the prior art;

FIG. 3 is a flow chart of multimedia services performed by the IMS provided by the present invention.

Detailed ways

The core idea of the present invention is: MRFC acquires and saves the corresponding relationship between MRFP and special service attribute information. When MRFC receives the service request sent by S-CSCF, if it detects that the service request carries special service attribute information, then Among the available MRFPs that can provide media resources corresponding to the requested service, an MRFP corresponding to the special service attribute is selected to complete the current service.

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

Fig. 3 is the flowchart that IMS provided by the present invention carries out multimedia service, as shown in Fig. 3, its specific steps are as follows:

Step 301: MRFC obtains and saves the corresponding relationship between MRFP and special service attribute information.

The special service attribute information may be geographic location information, control capability information such as: fast forward control capability information, fast rewind control capability information, and the like.

MRFC can obtain the corresponding relationship between MRFP and special service attribute information in the following two ways:

One is: the network administrator statically configures the corresponding relationship between MRFP and special service attribute information on MRFC, and MRFC saves the corresponding relationship; the other is: after MRFP starts itself, it actively reports its own special service to MRFC attribute information, after the MRFC receives the special service attribute information, it saves the corresponding relationship between the MRFP and the special service attribute information it has.

Step 302: MRFC acquires and saves the status of MRFP and the status of various media resources on the MRFP.

Step 303: MRFC receives the service request sent by S-CSCF, the service request carries service type, special service attribute information and so on.

Here, the service request needs to be extended so that it can carry special service attribute information. For example, when the special service attribute information is geographical location information, it can be included in the header field of the service request such as: Visited Network Identification (P-Visited-Network- ID) header field and/or access network information (P-Access-Network-Info) header field carries geographic location information, or adds a header field that can carry geographic location information in the service request; at the same time, it is necessary to perform functions on the Mr interface Extended so that it can support the transmission of service requests carrying special service attribute information.

Step 304: The MRFC detects that the service request carries special service attribute information. The MRFC first searches for currently available and corresponding service types according to the service type carried by the service request, the state of the MRFP saved by itself, and the state of the media resources on the MRFP. MRFP of media resources available.

Step 305: The MRFP searches for the MRFP corresponding to the special service attribute information among the MRFPs found in step 304 according to the correspondence between the MRFP and the special service attribute information stored by itself.

Specifically, if the special service attribute information is geographic location information, the MRFC will compare the geographic location corresponding to the geographic location information carried in the service request with the geographic location in the corresponding relationship according to the correspondence between the MRFP and the geographic location information stored by the MRFC. The geographical location corresponding to the information is compared with the distance, and finally the MRFP pointed to by the shortest distance is selected to complete this business.

Step 306: The MRFP sends the service request to the finally found MRFP.

If there are multiple MRFPs corresponding to the special service attribute, the MRFP can choose one of the multiple MRFPs to complete the service.

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

The above descriptions are only process and method embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of the present invention. within the scope of protection.

Claims (7)

1, a kind of method of carrying out multimedia service is characterized in that, this method comprises:

A, Multimedia resource function controller (MRFC) MRFC obtain and preserve the corresponding relation of Multimedia resource function processor (MRFP) MRFP and particular service attribute information;

B, MRFC receive the service request that service call conversation control function S-CSCF sends, and after detecting this service request and carrying the particular service attribute information, corresponding relation according to described MRFP and particular service attribute information, can provide among this professional MPFP current, search the corresponding MRFP of particular service attribute information that carries with service request, then service request is sent to the MRFP that finds, after MRFP receives service request, carry out business service.

2, the method for claim 1 is characterized in that, described particular service attribute information is a geographical location information, or control ability information.

3, method as claimed in claim 2 is characterized in that, the particular service attribute information that the described service request of step B is carried is: geographical location information,

The described MRFC of step B searches the corresponding MRFP of particular service attribute information that carries with service request and is specially:

MRFC is according to the MRFP that self preserves and the corresponding relation of geographical location information, distance is carried out relatively in the geographical position corresponding with the geographical location information in the described corresponding relation, the geographical position of the geographical location information correspondence that described service request is carried, the MRFP in the described corresponding relation that selected at last minimum distance points to.

4, method as claimed in claim 2 is characterized in that, the particular service attribute information that the described service request of step B is carried is: geographical location information,

And the accesses network that described geographical location information is carried in the service request identifies in header field and/or the Access Network information header field.

5, method as claimed in claim 2 is characterized in that, the particular service attribute information that the described service request of step B is carried is: geographical location information,

Described method further comprises: preestablishes and comprises the header field that can carry geographical location information in the service request,

Described geographical location information is carried in the header field that can carry geographical location information in the described service request.

6, the method for claim 1 is characterized in that, described steps A is specially:

The corresponding relation of MRFP and particular service attribute information is configured on the MRFC, and MRFC preserves described corresponding relation.

7, the method for claim 1 is characterized in that, described steps A is specially:

MRFP after MRFC receives this particular service attribute information, preserves the corresponding relation of MRFP and particular service attribute information self starting the back initiatively reports self to MRFC particular service attribute information.

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