WO2009009981A1

WO2009009981A1 - A method, communication system and relative device for setting up media resource accessing relationship

Info

Publication number: WO2009009981A1
Application number: PCT/CN2008/071381
Authority: WO
Inventors: Xiao Wang; Yuxia Zhang; Peili Xu; Peng Wang
Original assignee: Huawei Technologies Co., Ltd.
Priority date: 2007-07-17
Filing date: 2008-06-20
Publication date: 2009-01-22
Also published as: CN101350841A

Abstract

A method, communication system and relative device for setting up media resource accessing relationship are provided to improve the commonality of accessing media resource. The method includes: querying unit sends media resource request message including media resource service identifier to locating server; receiving address information of media resource server fed back by locating server, and the address information of media resource server is obtained by locating server through searching according to the media resource service identifier; setting up media resource accessing relationship connection with media resource server providing corresponding resource service according to the address information of media resource server. A communication system and a locating server and a middle entity are also provided.

Description

Media resource access relationship establishing method and communication system and related equipment

This application claims the priority of the Chinese Patent Application filed on July 17, 2007, the Chinese Patent Office, Application No. 200710137256.7, entitled "Media Resource Access Relationship Establishment Method and Communication System and Related Equipment", the entire contents of which are incorporated by reference. Combined in this application.

Technical field

The present invention relates to the field of communications, and in particular, to a method for establishing a media resource access relationship, a communication system, and related devices.

Background technique

With the continuous development of network technology, the media services provided to users are becoming more and more abundant. Users often initiate media service requests to request media services. The Media Resource Client (MRC) is responsible for processing user media. The service request, and query the corresponding media resource server (MRS, Media Resource Server) to provide media services for the user, the MRC needs to accurately locate the corresponding MRS to provide media services according to the requirements of the user, one of the prior art The MRS addressing method is a way for the media client to actively query:

Referring to FIG. 1 , the MRC queries the address information of the MRS to be accessed according to the locally stored MRS information, and directly sends a media access request to the corresponding MRS according to the address information, and the MRS feeds back the media resource.

However, since the prior art solution is to request a media resource service by directly configuring an MRS providing a corresponding resource service on the MRC, and a plurality of media resource servers may need to be configured on one MRC, the problem is to make the MRC The load increases; in addition, the storage resources on the MRC are limited, it is impossible to store all MRS information, and in some media network architectures, the network does not require the MRS address information to be configured on the MRC, and does not require MRC management. MRS information (address information, supported capability information, and supported media control protocol information), which cannot solve the MRS addressing problem, and thus cannot provide media resource services.

The prior art solution is that the MRC requests a certain media resource server, and in some cases, it is more desirable that the media resource client can request resource service by requesting a resource service, so the prior art is not universal.

Summary of the invention

Embodiments of the present invention provide a method for establishing a media resource access relationship, a communication system, and related devices. The device can solve the storage problem of the media resource server related information of the media resource server, and improve the versatility of the media resource access.

The method for establishing a media resource access relationship provided by the embodiment of the present invention includes: the querying end sends a media resource request message including a media resource service identifier to the positioning server; and receiving address information of the media resource server fed back by the positioning server, where the media resource The address information of the server is obtained by the location server according to the media resource service identifier query; and the media resource access relationship connection is established according to the address information of the media resource server and the media resource server that provides the corresponding resource service.

The method for establishing a media resource access relationship according to the embodiment of the present invention includes: the intermediate entity receiving a media resource request message that is sent by the media resource client and including the media resource service identifier; and forwarding the media resource request message to the positioning server; And receiving, by the location server, the address information of the media resource server, where the address information of the media resource server is obtained by the location server according to the media resource service identifier, and the address information of the received media resource server is sent to the media resource client. And the media resource client establishes a media resource access relationship connection according to the address information of the media resource server and the media resource server that provides the corresponding resource service.

The communication system provided by the embodiment of the present invention includes: a media resource server, configured to provide a resource service by using a media resource access relationship connection; a positioning server, configured to receive a media resource request message of the physical resource service identifier, according to the media The resource service identifier query provides the address information of the media resource server corresponding to the resource service, and feeds back the address information of the queried media resource server; the media resource client is configured to send a media resource request message including the media resource service identifier to the location server, according to The address information of the media resource server fed back by the location server establishes a media resource access relationship connection with the media resource server that provides the corresponding resource service.

The communication system provided by the embodiment of the present invention includes a media resource server, a positioning server, a media resource client, and an intermediate entity; a media resource server, configured to provide a resource service by using a media resource access relationship connection; and a positioning server, configured to receive the intermediate entity to send The media resource request message of the physical resource service identifier, the address information of the media resource server corresponding to the resource service is provided according to the media resource service identifier query, and the address information of the queried media resource server is fed back to the intermediate entity; And receiving a media resource request message of the packet resource service identifier sent by the media resource client, forwarding the request message to the location server, according to the address information of the media resource server fed back by the location server, and providing the corresponding resource service Media resource server to establish media resources The source access relationship is connected, or the address information of the received media resource server is forwarded to the media resource client; the media resource client is configured to send the media resource request message of the packet resource service identifier to the intermediate entity; When the address information of the media resource server fed back from the intermediate entity is established, the media resource access relationship connection is established according to the address information of the media resource server and the media resource server that provides the corresponding resource service.

The locating server provided by the embodiment of the present invention includes: a receiving unit, configured to receive a media resource request message that includes a media resource service identifier; a query unit, configured to query, according to the media resource service identifier, a media resource server that provides a corresponding resource service Address information; a feedback unit, configured to feed back address information of the queried media resource server.

The intermediate entity provided by the embodiment of the present invention includes: a request receiving unit, configured to receive a media resource request message that includes a media resource service identifier sent by a media client, and a request forwarding unit, configured to forward the received media resource request message to The address receiving unit is configured to receive the address information of the media resource server fed back by the positioning server, and the address forwarding unit, configured to forward the obtained media resource server address information to the media resource client. As can be seen from the above technical solutions, the embodiments of the present invention have the following advantages:

In the embodiment of the present invention, the querier sends a media resource request message including the media resource service identifier to the locating server, and the locating server completes the address information query of the corresponding MRS, so the querier does not need to store the MRS related information locally, thereby effectively reducing The load of the MRC also solves the problem that the MRC cannot provide the provision of the media resource service without storing the MRS related information, and improves the versatility of the access of the media resource.

DRAWINGS

1 is a schematic diagram of a method for accessing a media resource in the prior art;

2 is a schematic diagram of a first embodiment of a communication system according to an embodiment of the present invention;

3 is a schematic diagram of a second embodiment of a communication system according to an embodiment of the present invention;

4 is a schematic diagram of an embodiment of a positioning server according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of an embodiment of an intermediate entity according to an embodiment of the present invention; FIG.

FIG. 6 is a flowchart of a first embodiment of a method for establishing a media resource access relationship according to an embodiment of the present invention; FIG. 7 is a flowchart of a second embodiment of a method for establishing a media resource access relationship according to an embodiment of the present invention; FIG. 8 is a flowchart of a third embodiment of a method for establishing a media resource access relationship according to an embodiment of the present invention. detailed description

The embodiments of the present invention provide a method for establishing a media resource access relationship, a communication system, and related devices, which are used to improve the versatility of media resource access.

In the embodiment of the present invention, the media resource request message is received by the positioning server, and the address information of the corresponding MRS is queried according to the message, and in the embodiment of the present invention, the MRC may directly send a request to the positioning server, and receive the message. The MRS address information fed back by the server may also be transferred by a special intermediate entity. It may be understood that the intermediate entity mentioned in the embodiment of the present invention may be a network element or multiple network elements.

First, the device item in the embodiment of the present invention is described. Referring to FIG. 2, the figure illustrates an implementation of the communication system in which the MRC directly sends a request to the positioning server. In the embodiment of the present invention, the first embodiment of the communication system includes:

The media resource server 203 is configured to provide a resource service by using a media resource access relationship connection. The location server 202 is configured to receive a media resource request message that includes the media resource service identifier, and query the media resource server that provides the corresponding resource service according to the media resource service identifier. Address information, feedback address information of the media resource server that is queried;

The media resource client 201 is configured to send a media resource request message including the media resource service identifier to the location server 202, and establish a media resource according to the address information of the media resource server 203 fed back by the location server 202 and the media resource server 203 that provides the corresponding resource service. Access relationship connections.

Referring to FIG. 3, the figure illustrates an implementation of a communication system with intermediate entities involved. The second embodiment of the communication system in the embodiment of the present invention includes:

The media resource server 304 is configured to provide a resource service by using a media resource access relationship connection. The location server 303 is configured to receive a media resource request message that includes the media resource service identifier, and query the media resource server that provides the corresponding resource service according to the media resource service identifier. Address information, feedback address information of the media resource server that is queried; media resource request message;

The intermediate entity 302 is configured to receive a media resource request message of the packet resource service identifier sent by the media resource client 301, and forward the request message to the location server 303, according to the location server. 303. The address information of the fed media resource server is established by establishing a media resource access relationship with the media resource server that provides the corresponding resource service;

Or the address information of the media resource server fed back by the location server 303 is fed back to the media resource client 301, and the media resource client 301 establishes a media resource access relationship connection with the media resource server that provides the corresponding resource service.

Referring to FIG. 4, an embodiment of a positioning server in an embodiment of the present invention includes:

a receiving unit 401, configured to receive a media resource request message that includes a media resource service identifier, where the query unit 402 is configured to query, according to the media resource service identifier, address information of the media resource server that provides the resource service;

The feedback unit 403 is configured to feed back the address information of the queried media resource server.

In this embodiment, the location server may be a DNS server or other network element that stores a correspondence between the media resource service identifier and the MRS address information.

Referring to FIG. 5, an intermediate entity embodiment in the embodiment of the present invention includes:

The request receiving unit 501 is configured to receive a media resource request message that is sent by the media client and includes a media resource service identifier.

The request forwarding unit 502 is configured to forward the received media resource request message to the location server.

An address receiving unit 503, configured to receive address information of a media resource server fed back by the positioning server;

The connection establishing unit 504 is configured to establish, according to the received address information of the media resource server, a media resource access relationship connection with the media resource server that provides the corresponding resource service;

The address forwarding unit 505 is configured to forward the obtained media resource server address information to the media resource client.

With reference to FIG. 3, it is possible that if the address information of the media resource server fed back by the location server 303 is fed back to the media resource client 301 by the intermediate entity, the media resource client 301 and the media resource server providing the corresponding resource service. The media resource access relationship connection is established, and the foregoing intermediate entity may not include the connection establishing unit 504.

In this embodiment, the querier sends a media resource request message including the media resource service identifier to the locating server, and the location server completes the address information query of the corresponding MRS, so the query endbook The location does not need to store related information of the MRS, that is, the positioning server selects the corresponding MRS according to the needs of the querying end to provide services for the querying end, thereby improving the versatility of accessing the media resources.

The following describes the embodiment of the method for establishing a media resource access relationship in the embodiment of the present invention. It should be noted that the query end that sends the media resource request message to the positioning server in this embodiment may be an MRC or an intermediate entity.

Specifically, the method for establishing a media resource access relationship in the embodiment of the present invention may be divided into two categories according to whether there is an intermediate entity involved:

First, the MRC independently interacts with the positioning server:

Referring to FIG. 6, a first embodiment of a method for establishing a media resource access relationship in an embodiment of the present invention includes:

601. The MRC sends a media resource request message to the positioning server.

The MRC sends a media resource request message including the media resource service identifier to the location server, and requests the location server to query the address information of the corresponding MRS.

In this embodiment, the address of the positioning server is configured in the MRC. When the MRC needs to obtain the media resource, the MRC sends a media resource request message to the corresponding positioning server according to the address, where the positioning server may be selected according to the actual situation, or may be A DNS server or other network element that stores a correspondence between a media resource service identifier and MRS address information.

Before the MRC sends the media resource request message, it first needs to determine related information of the media resource service that needs to be requested, and generate a corresponding media resource service identifier.

The media resource service identifier may be a uniform resource name (URN, Uniform Resource).

Name ), can also be a Uniform Resource Identifier ( URI)

Specifically, in this embodiment:

A) Media Resource Service Identity The structure of the URN is as follows:

URN: mrs: [type of mrs service]: [subtype of mrs service]: [: other]

Or use:

URN: service: mrs: [type of mrs service]: [subtype of mrs service]: [: other] where "mrs" is unique. [:other] represents an optional option for subsequent extensions.

The attribute types of "type of mrs service" and "subtype of mrs service" and their corresponding relationships are as shown in Table 1: Table 1

Media Resource Service Type Media Resource Service Subtype

Player Announcements prompt, multimedia

Recorder Audio, multimedia

Conference Audio, multimedia

Transcoder Audio, video

Recognizer basic

Synthesizer basic

For example, a URN indicating that the prompt tone service is played is as follows:

URN: mrs: player: announcement„

B) Media Resource Service Identity URI:

First define a special domain that logically provides media service processing;

For example, mrs.int. The domain is divided from the perspective of the media service function, that is to say, the service entity providing the media service does not necessarily originate from a media resource server domain name space but originates from a logical space in the network providing the media service function;

Secondly define " mrs" scheme, so the media resource service URI format is similar:

Mrs: sub-service@mrs.int

Or

Mrs://mrs.int/sub-service

The sub-service indicates the minimum provisioning capability of the media resource service, and the sub-service value may be a sub-service of the media resource service or a combination of sub-services such as an announcement prompt, "rec=audio", "conf=audio", recognizer, "player" +recorder", etc., because the classification of media resources month is not determined, here is not - enumeration. In addition, the terminology of the media resource service is not determined, so the terminology here only represents the corresponding service meaning, so even if the standard determines the exact terminology in the future, it can be used here. For example:

Mrs: rec=audio @mrs . int

In addition, if all media service providers support the SIP protocol, the media resource service URI format is similar: Sip: sub-service @mrs . int

The fields in the URI have the same meaning as above.

602. Obtain a media resource service type identifier.

After receiving the media resource service identifier, the location server extracts the media resource service type identifier.

603. Query a corresponding MRS address information.

After obtaining the media resource type identifier, the location server obtains the MRS address information corresponding to the media resource service type identifier according to the mapping rule of the preset media resource service type identifier and the MRS address information.

In this embodiment, the corresponding relationship between the media resource type identifier and the MRS address information may be preset in the positioning server, and the corresponding relationship may be established in the execution process of the present invention. The specific establishment manner may be determined according to actual conditions. There is no limit.

604. Feedback the address information that is queried;

After the location server queries the corresponding MRS address information, the MRS address information is fed back to the MRC.

605. Establish a media resource access relationship connection.

After receiving the MRS address information fed back by the positioning server, the MRC establishes a media resource access relationship connection with the MRS that provides the resource service.

The subsequent media resource client and the media resource server providing the resource service implement the provision of the media resource service according to the connection interaction media service processing signaling.

In this embodiment, the MRC sends a media resource request message to the positioning server, and the positioning server selects the corresponding MRS to provide the MRC according to the requirements of the MRC, that is, the MRS does not need to save the MRS configuration information locally, but only needs to provide the requested media service. Type, so it improves the versatility of access to media resources.

Second, the MRC interacts through intermediate entities:

In this embodiment, the intermediate entity is a query end. Among them, the intermediate entity is equivalent to the role of the agent, and this method is divided into two cases according to the specific agent function of the intermediate entity:

A, the intermediate entity only has the query function:

Referring to FIG. 7, a second embodiment of a method for establishing a media resource access relationship in an embodiment of the present invention is provided. Includes:

701. Send a media resource request message.

The MRC sends a media resource request message including the media resource service identifier to the intermediate entity, and requests the location server to query the address information of the corresponding MRS.

The media resource service identifier may be a URN or a URI.

The structure of the URN and the URI in this embodiment is the same as that in the first embodiment, and will not be described again here.

The intermediate entity in this embodiment is a network element with a forwarding function. The specific network element type is not limited.

702. The intermediate entity queries the address information.

After receiving the resource request message sent by the MRC, the intermediate entity performs a media resource service address query to the positioning server.

703. Obtain a media resource service type identifier.

704. Query a corresponding MRS address information.

After obtaining the media resource service type identifier, the positioning server obtains the MRS address information corresponding to the media resource service type identifier according to the mapping rule of the preset media resource service type identifier and the MRS address information.

705. Query the address information that is queried;

After the location server queries the corresponding MRS address information, the MRS address information is fed back to the intermediate entity.

706. The intermediate entity feeds back the MRS address information.

The intermediate entity feeds back the MRS address information to the MRC after receiving the MRS address information.

707. Establish a media resource access relationship connection.

After receiving the MRS address information fed back by the intermediate entity, the MRC establishes a media resource access relationship connection with the MRS providing the resource service.

The subsequent media resource client and the media resource server providing the resource service implement the provision of the media resource service according to the connection interaction media service processing signaling. In this embodiment, the establishment of the media resource access relationship connection may be performed in multiple manners, and may be selected according to actual conditions, thereby improving the flexibility of the embodiment of the present invention.

B. The intermediate entity has the function of querying and establishing a connection:

Referring to FIG. 8, a third embodiment of a method for establishing a media resource access relationship in an embodiment of the present invention includes:

801. Send a media resource request message.

The MRC sends a media resource request message including the media resource service identifier to the intermediate entity, and the intermediate entity requests the location server to query the address information of the corresponding MRS.

The media resource service identifier may be a URN or a URI.

802. The intermediate entity queries the address information.

After receiving the resource request message sent by the MRC, the intermediate entity performs media resource service address information query to the positioning server.

803. Obtain a media resource service type identifier.

804. Query a corresponding MRS address information.

805. The address information that is queried by the feedback;

806. Establish a media resource access relationship connection.

After obtaining the MRS address information, the intermediate entity establishes a media resource access relationship connection with the MRS that provides the resource service. The subsequent media resource client, the intermediate entity, and the media resource server providing the resource service enable the media resource server to implement the provision of the media resource service according to the connection interaction media service processing signaling.

In this embodiment, the establishment of the media resource access relationship connection may be performed in multiple manners, and may be selected according to actual conditions, thereby improving the flexibility of the embodiment of the present invention.

The following is a specific example:

In this embodiment, it is assumed that the media resource service identifier is carried in the request:

URN:mrs:player:prompt

URN:mrs:recorder:audio

The media resource types extracted by the location server are player:prompt and recorder: audio. The positioning server obtains the corresponding MRS address information by performing a mapping request and a mapping response process. The specific process is:

Make a mapping request:

Mapping request:

<?xml version="1.0" encoding="UTF-8"?> 〃Extended markup language version number and encoding method

<findmediaserver //Query the media resource server

Xmlns="urn: ietf :params: xml: ns: mappingprotocol"> 〃 mapping protocol

<addr_request>Urn: mrs: player: prompt</ addr_request> 〃Query conditions

<addr_request>Urn: mrs: recorder: audio</ addr_request> 〃Query conditions

</ findmediaserver>

Perform a mapping response:

Mapping response:

<findserverresponse

Xmlns="urn: ietf :params: xml: ns: mappingprotocol"> 〃 mapping protocol

<mapping> <addr_request>Urn: mrs: player: prompt</ addr_request> 〃Query condition <addr_request>Urn: mrs: recorder: audio</ addr_request> 〃Query condition <uri>Sip: multifuc-mr@example . com</uri> 〃search result

</mapping>

</findserverresponse>

The result of the mapping request can be obtained from the mapping response content, that is, the URI of the MRS satisfying the corresponding query condition is fed back: Sip: multifuc-mr@example.com.

After the MRC or the intermediate entity obtains the address information of the MRS, the media resource access relationship is established. The specific establishment manner is as described in the first embodiment and the second embodiment, and details are not described herein again.

In the embodiment of the present invention, the querier sends the media resource request message including the media resource service identifier to the locating server, and the locating server completes the address query of the corresponding MRS, so the query end does not need to perform the query operation locally, so the media resource is improved. The versatility of access.

It will be understood by those skilled in the art that all or part of the steps of implementing the foregoing embodiments may be performed by a program to instruct related hardware, and the program may be stored in a computer readable storage medium. The method includes the following steps: the querying end sends a media resource request message of the physical resource service identifier to the positioning server, and receives the address information of the media resource server fed back by the positioning server, where the address information of the media resource server is a positioning server according to the The media resource service identifier is obtained by querying; and the media resource access relationship connection is established according to the address information of the media resource server and the media resource server that provides the corresponding resource service.

The above-mentioned storage medium may be a read only memory, a magnetic disk or an optical disk or the like.

The foregoing describes a media resource access relationship establishment method, a communication system, and related equipment provided by the present invention. For those skilled in the art, according to the embodiments of the present invention, the specific implementation manner and application scope are There are variations, and the description is not to be construed as limiting the invention.

Claims

Rights request

A method for establishing a media resource access relationship, characterized in that:

The querier sends a media resource request message that includes the media resource service identifier to the locating server, and receives the address information of the media resource server that is sent by the locating server, where the address information of the media resource server is the locating server according to the media resource service identifier. Get

Establishing a media resource access relationship connection according to the address information of the media resource server and the media resource server providing the corresponding resource service.

The method for establishing a media resource access relationship according to claim 1, wherein the media resource service identifier is a uniform resource name or a uniform resource identifier;

The uniform resource name or the uniform resource identifier includes a media resource service type identifier requested by the querying end;

The step of providing the address information of the media resource server corresponding to the resource service according to the media resource service identifier query includes:

Obtaining a media resource service type identifier in the media resource service identifier;

Obtaining the media resource server address information corresponding to the media resource service type identifier according to the mapping rule of the preset media resource service type identifier and the media resource server address information.

The method for establishing a media resource access relationship according to claim 2, wherein the query end is a media resource client or an intermediate entity.

The method for establishing a media resource access relationship according to claim 3, wherein when the query end is an intermediate entity, the method further includes:

The intermediate entity receives the media resource request message that is sent by the media resource client and includes the media resource service identifier.

5. A method for establishing a media resource access relationship, characterized in that:

The intermediate entity receives a media resource request message that is sent by the media resource client and includes a media resource service identifier.

Forwarding the media resource request message to a positioning server;

And receiving, by the location server, the address information of the media resource server, where the address information of the media resource server is obtained by the location server according to the media resource service identifier query;

Sending the address information of the received media resource server to the media resource client; The media resource client establishes a media resource access relationship connection according to the address information of the media resource server and the media resource server that provides the corresponding resource service.

The method for establishing a media resource access relationship according to claim 5, wherein the media resource service identifier is a uniform resource name or a unified resource identifier;

7. A communication system, comprising:

a media resource server, configured to provide a resource service by using a media resource access relationship connection; a positioning server, configured to receive a media resource request message that includes a media resource service identifier, and query, according to the media resource service identifier, a media resource server that provides a corresponding resource service Address information, feedback address information of the media resource server that is queried;

The media resource client is configured to send a media resource request message that includes the media resource service identifier to the location server, and establish a media resource access relationship connection with the media resource server that provides the corresponding resource service according to the address information of the media resource server fed back by the location server.

8. A communication system, comprising: a media resource server, a location server, a media resource client, and an intermediate entity;

a media resource server, configured to provide a resource service by using a media resource access relationship connection; a positioning server, configured to receive a media resource request message of the packet resource service identifier sent by the intermediate entity, and provide a corresponding resource according to the media resource service identifier query Address information of the serving media resource server, and feeding back the address information of the queried media resource server to the intermediate entity;

The intermediate entity is configured to receive a media resource request message that is sent by the media resource client and includes the media resource service identifier, and forward the request message to the positioning server, according to the address information of the media resource server and the corresponding resource service provided by the positioning server. The media resource server establishes a media resource access relationship connection, or forwards the address information of the received media resource server to the media resource guest. Account

a media resource client, configured to send a media resource request message of the physical resource service identifier to the intermediate entity; when receiving the address information of the media resource server fed back from the intermediate entity, according to the address of the media resource server The information establishes a media resource access relationship connection with the media resource server that provides the corresponding resource service.

9. A positioning server, comprising:

a receiving unit, configured to receive a media resource request message that includes a media resource service identifier, and a query unit, configured to query, according to the media resource service identifier, the address information of the media resource server that provides the corresponding resource service;

a feedback unit, configured to feed back address information of the queried media resource server.

10. An intermediate entity, comprising:

a request receiving unit, configured to receive a media resource request message that is sent by the media client and includes a media resource service identifier;

a request forwarding unit, configured to forward the received media resource request message to the positioning server, and an address receiving unit, configured to receive address information of the media resource server fed back by the positioning server;

An address forwarding unit is configured to forward the obtained media resource server address information to the media resource client.

The intermediate entity according to claim 10, further comprising:

The connection establishing unit is configured to establish a media resource access relationship connection according to the received address information of the media resource server and the media resource server that provides the corresponding resource service.