CN101626385A - Media service method and media service system - Google Patents

Media service method and media service system Download PDF

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Publication number
CN101626385A
CN101626385A CN 200910164084 CN200910164084A CN101626385A CN 101626385 A CN101626385 A CN 101626385A CN 200910164084 CN200910164084 CN 200910164084 CN 200910164084 A CN200910164084 A CN 200910164084A CN 101626385 A CN101626385 A CN 101626385A
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China
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media
fringe node
url
subscriber equipment
media resource
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Granted
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CN 200910164084
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CN101626385B (en
Inventor
王德超
熊勤
王印龙
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ZTE Corp
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ZTE Corp
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Priority to CN200910164084.1A priority Critical patent/CN101626385B/en
Publication of CN101626385A publication Critical patent/CN101626385A/en
Priority to PCT/CN2010/073950 priority patent/WO2011017976A1/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/10Architectures or entities
    • H04L65/1046Call controllers; Call servers

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Information Transfer Between Computers (AREA)

Abstract

The invention discloses a media service method and a media service system. The method comprises the following steps: a flange node receives a media service request from user equipment (UE), wherein the media service request is used for requesting a media resource; the flange node judges whether to provide the media resource for the UE or not; the flange node sends request information to a center node after the flange node judges that the media resource can not be provided for the UE; and the flange node receives a media resource from the center node responding the request information and sends the media resource to the UE. The invention optimizes the resource sharing capability of the system and improves the user experience effect.

Description

Media service method and system
Technical field
The present invention relates to the communications field, in particular to a kind of media service method and system.
Background technology
The mobile flow medium technology is that continuous sound and image information are stored on the webserver after handling through collection, compression, make mobile phone users listen to, to watch, and do not need whole multimedia file download by the time to finish the technology that just can watch immediately while downloading.
When mobile flow medium service is provided, generally be that the physical region according to user attaching sets up server node respectively, provide media services by this node for the user in the one's respective area.When the media file in the system is more and more, pose a big pressure for the storage of node, simultaneously for some more uncommon unexpected winner contents, each node is all preserved the waste that portion can cause storage resources, but, if make each node preserve the part of media file selectively, when on user's requesting node during non-existent media file in order to alleviate storage pressure, system can't provide service, influences user experience.
Summary of the invention
System can't not provide the problem of service and propose the present invention when storage resources waste that produces when the storage resources at the server partial node in the correlation technique and resource did not exist, for this reason, main purpose of the present invention is to provide a kind of improved media services scheme, one of to address the above problem at least.
To achieve these goals, according to an aspect of the present invention, provide a kind of media service method.
Media service method according to the present invention comprises: fringe node receives the media service request from subscriber equipment, and wherein, media service request is used to ask media resource; Can flange node judges it provide media resource for subscriber equipment; Fringe node is under the situation not in judged result, sends a request message to Centroid; Fringe node receives from the media resource of Centroid in response to request message, and media resource is sent to subscriber equipment.
Preferably, fringe node receives and to comprise from the media resource of Centroid in response to request message: Centroid sends the URL that carries the media server address that is used to provide media resource to fringe node; Fringe node is initiated media service request according to URL to the media server of URL correspondence, and receives the media resource from the media server of URL correspondence.
Preferably, fringe node sends a request message to Centroid and comprises: fringe node sends the URL of the media server address carry fringe node to subscriber equipment, wherein, carries the sign that fringe node can not provide media resource among the URL; Subscriber equipment is initiated media service request according to URL to the media server of URL correspondence; The media server of URL correspondence receives after the service request from subscriber equipment, sends a request message to Centroid.
Preferably, be that fringe node sends to subscriber equipment with media resource under the situation that is in judged result.
Preferably, before fringe node received media service request from subscriber equipment, method also comprises: fringe node was preserved media resource according to predetermined policy.
To achieve these goals, according to a further aspect in the invention, provide a kind of media service system.
Media service system according to the present invention comprises fringe node and Centroid, and wherein, fringe node comprises: first receiver module, be used to receive media service request from subscriber equipment, and wherein, media service request is used to ask media resource; Judge module is used to judge that fringe node can provide media resource for subscriber equipment; First sending module, the judged result that is used at judge module is under the situation not, sends a request message to Centroid; Second receiver module, fringe node receive from the media resource of Centroid in response to request message; Second sending module is used for media resource is sent to subscriber equipment.
Preferably, second receiver module comprises: first receives submodule, is used to receive the URL that is used to provide the media server address of media resource from carrying of Centroid; Initiate submodule, be used for initiating media service request to the media server of URL correspondence according to URL; Second receives submodule, is used to receive the media resource from the media server of URL correspondence.
Preferably, first sending module comprises: first sends submodule, be used for sending the URL of the media server address that carries fringe node to subscriber equipment, wherein, carry fringe node among the URL sign of media resource can not be provided, so that subscriber equipment is initiated media service request according to URL to the media server of URL correspondence; Second sends submodule, is used for sending a request message to Centroid after the service request that receives from subscriber equipment.
Preferably, fringe node also comprises: preserve module, be used for preserving media resource according to predetermined policy.
Preferably, Centroid comprises: the 3rd receiver module, be used for receiving from the fringe node request message, and wherein, request message is used to ask media resource: the 3rd sending module is used for media resource is sent to fringe node.
By the present invention, adopted at partial node (promptly according to strategy, fringe node) goes up the preservation media resource, when the media resource of user terminal requests does not exist on partial node, this partial node obtains this media resource from Centroid, system can't not provide the problem of service when storage resources waste that the server partial node that has solved produces when storage resources and resource did not exist, and then had reached the resource sharing capability of optimization system and improved user experience effect.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart according to the media service method of the embodiment of the invention;
Fig. 2 is the structural representation according to the mobile stream media system networking of the embodiment of the invention;
Fig. 3 is the flow chart according to the service trunking method of the embodiment of the invention;
Fig. 4 provides the flow chart of order program service according to the embodiment of the invention with non-relaying form;
Fig. 5 provides the flow chart of order program service according to the embodiment of the invention with the relaying form;
Fig. 6 is the structured flowchart according to the media service system of the embodiment of the invention;
Fig. 7 is the structured flowchart concrete according to the media service system of the embodiment of the invention.
Embodiment
Functional overview
System can't not provide the problem of service when storage resources waste that the server partial node in the correlation technique produces when storage resources and resource did not exist, the embodiment of the invention provides a kind of media services scheme, the treatment principle of this scheme is as follows: fringe node receives the media service request from subscriber equipment, wherein, media service request is used to ask media resource; Fringe node is determined can not provide under the situation of media resource for subscriber equipment at it, sends a request message to Centroid; Fringe node receives from the media resource of Centroid in response to request message, and media resource is sent to subscriber equipment.
Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
In following examples, can in computer system, carry out in the step shown in the flow chart of accompanying drawing such as a set of computer-executable instructions, and, though there is shown logical order in flow process, but in some cases, can carry out step shown or that describe with the order that is different from herein.
Method embodiment
According to embodiments of the invention, a kind of media service method is provided, Fig. 1 is to be the flow chart of the media service method of embodiment according to the present invention, as shown in Figure 1, this method comprises that following step S102 is to step S106:
Step S102, fringe node receives the media service request from subscriber equipment, and wherein, media service request is used to ask media resource.
Step S104, can this fringe node of flange node judges provide the media resource of request for subscriber equipment, and can not provide under the situation of media resource for subscriber equipment at it determining, sends a request message to Centroid; Determine that at fringe node it can provide under the situation of media resource for subscriber equipment, fringe node sends to subscriber equipment with media resource.
Step S106, fringe node receives from the media resource of Centroid in response to request message, and media resource is sent to subscriber equipment.
Fringe node can not can be that this fringe node does not exist this media resource for subscriber equipment provides the reason of media resource, but reason is not limited to this, and for example, this reason can also be because the load of fringe node is excessive etc.
Need to prove that fringe node does not need to preserve all media resources, can preserve media resource according to predetermined policy, for example, can be according to the number of times of this media resource program request, the creation-time of this media resource etc.
Wherein, the fringe node in step S106 receives and comprises the steps: from the media resource of Centroid in response to request message
Steps A, Centroid send the URL(uniform resource locator) (Uniform Resource Locator abbreviates URL as) carry the media server address that is used to provide media resource to fringe node.
Step B, fringe node is initiated media service request according to URL to the media server of URL correspondence, and receives the media resource from the media server of URL correspondence.
In step S104, fringe node sends a request message to Centroid and comprises the steps:
Step C, fringe node sends the URL of the media server address carry fringe node to subscriber equipment, wherein, carries the sign that there is not media resource in fringe node among the URL.
Step D, subscriber equipment is initiated media service request according to URL to the media server of URL correspondence.
Step e, the media server of URL correspondence receive after the service request from subscriber equipment, send a request message to Centroid.
Below in conjunction with concrete network to above-mentioned steps 102 to step S106, Fig. 2 is the structural representation according to the mobile stream media system networking of the embodiment of the invention, as shown in Figure 2, in this mobile stream media system, adopt general headquarters-province to divide the mode of two level frameworks to dispose, a Centroid (being also referred to as general headquarters' node) is set in general headquarters; A fringe node (being also referred to as province's partial node or local node) is set in the each province, wherein, the service enabler address information of configuration general headquarters node is meant the combination of service enabler equipment and Duo Tai media server device at this node on the media server of economizing partial node.
Service enabler is used for the fileinfo (that is, media resource) deposited on management of media server apparatus and each media server device, wherein, economizes the separate service engine and also is responsible for handling mutual with subscriber equipment (User Equipment abbreviates UE as).After service enabler receives media service request from subscriber equipment, from database, retrieve earlier media file which media server device comprises user's request (promptly, media resource), then, the hardware performance of each media server and/or concurrent fluxion are selected an only server in comprehensive this province's partial node, finally assemble out and be used to provide the URL of media services to offer the user, the user uses this URL to carry out media service request.
Can provide media services such as program request, live and download for the user on the media server, can form cluster jointly by many media server device, media server uses big capacity magnetic battle array to preserve the entity content of media file on the node.
Audio-video wireless access protocol in general headquarters' node (Wireless Access Protocol abbreviates WAP as) door is responsible for representing the media file in the mobile stream media system, and subscriber equipment is by the media file tabular in the visit WAP door browing system.
Preserve all media files on the media server of general headquarters' node, each economizes partial node according to a certain strategy storage area entity file, for example, can only preserve popular content or the content of newly reaching the standard grade and regularly dynamically adjusting according to the actual operation situation of system.All mobile flow medium users can belong to certain fringe node according to its terminal number (for example, phone number).When user equipment requests media services, be responsible for request is sent to province's separate service engine of province's partial node of its ownership by wireless network or wired fixed network, this province's separate service engine is inquired about according to the media file record of preserving in this node database, if economizing the media file that exists the user to ask on the branch media server, then direct local media server by this node provides service for the user; If economize to divide on the media server and do not have corresponding media file, then trigger service relaying flow process, via economizing the available general headquarters media server device by an optimum of a series of mutual back selections such as the network element that divides media server, head office business engine and general headquarters' media server, be responsible for dividing media server that the media services of user's request content are provided to economizing by it.Below this relaying flow process is described in detail.
This relaying flow process is: when user equipment requests is served if self home node does not possess conditions of service, dividing media server to initiate redirect request to the head office business engine by the province in the home node earlier (need to prove, be redirected and be meant according to the distributed intelligence of media file in the system and the ruuning situation of each media device, choose a media server and provide service) for the user, one of head office business engine generation comprises that the service URL of general headquarters media server address returns to province and divides media server, economize and divide media server to use this URL to general headquarters' media server request service, general headquarters' media server divides media server to send the medium code stream to economizing, economize and divide media server that subscriber equipment is issued in the media code circulation, finish the medium interaction flow.Wherein provide general headquarters' media server relevant with COS with the data transmittal and routing form of economizing between the branch media server, economize when dividing between media server and the subscriber equipment, general transmission of flow media data is by RTP (Real-time Transport Protocol, abbreviate RTP as) and RTCP Real-time Transport Control Protocol (Real-time Transport ControlProtocol abbreviates RTCP as) cooperate and to finish.Fig. 3 is the flow chart according to the service trunking method of the embodiment of the invention, and as shown in Figure 3, this flow process comprises the steps:
Step S301, subscriber equipment is initiated media service request to province's separate service engine of home node.
Step S302, after province's separate service engine received this media service request, whether the content of searching user's request in database existed on the media services equipment of local node.
Step S303 according to the lookup result among the step S302, and determines to economize partial node in conjunction with situations such as the hardware performance of economizing media services equipment in the partial node and concurrent fluxions and whether can provide service.
Step S304 can provide service for the user if economize partial node, directly divides media server to send the medium code stream to subscriber equipment by economizing, the beginning service procedure.
Step S305 can't provide service if economize partial node, needs to trigger the relaying flow process.At this moment, return to subscriber equipment by economizing interim service URL of separate service engine generation, service equipment Internet protocol (Internet Protocol among the URL, abbreviating IP as) address fills in the address of any one media server in this node, simultaneously, in URL, represent that by an identification parameter this service need walk the relaying flow process.
Step S306, subscriber equipment use the URL that returns among the step S305 to initiate request to economizing the branch media server, economize the relaying identification parameter that divides in the media server taking-up request URL, initiate redirect request to the head office business engine.
Step S307, the head office business engine is redirected at general headquarters' intranodal, generates an available URL who contains general headquarters media server address, then, URL is encapsulated in the province that in the response message of certain form the result is returned to the request of sending and divides media server.
Step S308 economizes and divides the media server new URL that use receives to general headquarters' media server request service, and general headquarters' media server is to economizing the bit stream data that divides media server to send institute's request content.
Step S309 economizes and divides media server that the bit stream data that receives is transmitted to subscriber equipment, beginning media services flow process.
Be described in detail below in conjunction with the implementation procedure of example the embodiment of the invention.
Be example with user equipment requests video file order program service below, there is the content that the user asks on province's partial node of user attaching in explanation and does not have under two kinds of situations of content that the user asks the flow process of present embodiment respectively.
Fig. 4 be according to the embodiment of the invention provide the flow chart of order program service with non-relaying form, as shown in Figure 4, in this flow process, divide streaming media server directly for the user provides service by economizing, UE refers generally to the cell phone terminal; WAP is meant audio frequency and video WAP door, and the tabulation of program inlet is provided on the door, and subscriber equipment is visited the WAP door earlier in the practical application, selects an interested content to conduct interviews on the page and triggers the program request flow process; Local streaming media server (Local Streaming Server abbreviates LSS as) is deployed in network edge node, and the subscriber's local of being responsible for certain province inserts, and the media server of services such as the program request of Streaming Media, live, download is provided; Local service engine (Local Service Engine abbreviates LSE as) is formed province's partial node with local streaming media server, provides the mobile flow medium service for the user jointly.As shown in Figure 4, this flow process comprises the steps:
Step S401, subscriber equipment is by the WAP door of wireless network access mobile stream media system.
Step S402, the WAP door is presented in the mode of the audio-video frequency media file in the mobile stream media system with tabulation on the page, returns to subscriber equipment.
Step S403, user select interested media file to carry out program request, send the order program service request to the LSE of self node, and this message is the GET request of a HTML (Hypertext Markup Language) (HyperText Transfer Protocol abbreviates HTTP as) form.
Step S404, LSE retrieves in the content record table of self node database, whether the content of searching user's request exists on local streaming media server, if the content streaming media server operation that exists the user to ask is normal, then results messages is returned with the form of HTTP bag, result code is 200 in the HTTP message header, has comprised the URL as a result that LSE generates in the HTTP message body, it is that 0 this content of expression exists at province's partial node that the proxy parameter is set among the URL, does not need to walk service relaying flow process.
After step S405, subscriber equipment receive the response of LSE, take out the URL in the response message, initiate service request to LSS with real-time streaming protocol (Real-time Streaming Protocol abbreviates RTSP as) message.
After step S406, LSS receive subscriber equipment RTSP request, judge and find that the proxy parameter is 0 in its request URL that navigate to the file position of user's request on the magnetic battle array of server, beginning sends bit stream data to subscriber equipment, and order program service is provided.
Fig. 5 is according to the flow chart that provides order program service with the relaying form of the embodiment of the invention as shown in Figure 5, when user equipment requests point sowing time, economize separate service engine notifying user equipment in the message that subscriber equipment returns and to trigger the relaying flow process, finish program request relaying flow process alternately by economizing to divide between streaming media server, head office business engine and the general headquarters' streaming media server then.Global flow media server (Global Streaming Server abbreviates GSS as) is deployed in general headquarters' node of mobile stream media system, shares the service pressure of each province's partial node by the mode of relaying; Overall situation service enabler (Golbal Service Engine abbreviates GSE as) is selected the available devices of an optimum in the streaming media server device of general headquarters' node when receiving the redirect request of LSS, the information of this server is returned to LSS.This flow process comprises the steps:
Step S501, the WAP door of user equipment access mobile stream media system.
Step S502, the WAP door is presented in the mode of the audio-video frequency media file in the system with tabulation on the page, returns to subscriber equipment.
Step S503, user select interested media file to carry out program request, send the order program service request to the LSE of self node.
Step S504, LSE retrieves in the content record table of node database, whether the content of searching user's request exists on local streaming media server, if there is no then generate an interim service URL, arbitrary streaming media server IP in the local node is filled in streaming media server address among the URL, be set to this content of the local nothing of 1 expression by the identification parameter proxy among the URL simultaneously, the follow-up triggering relaying flow process that needs, response message also returns with the form of HTTP bag, result code is 200 in the HTTP message header, has comprised the URL as a result that LSE generates in the HTTP message body.
After step S505, subscriber equipment receive the response of LSE, take out the URL in the response message body, initiate service request to LSS with the RTSP form.
Step S506 after LSS receives user equipment requests, judges and finds that the proxy parameter is 1 in its request URL, initiates redirect request, the program request URL that one of acquisition request can be served to GSE.
Step S507, the content record table of GSE retrieval general headquarters node database, search the media file which stream media equipment comprises user's request, select a streaming media server according to the ruuning situation of each equipment simultaneously, final generate the available URL that relay services can be provided to LSS, form shape as:
rtsp://<GSS-IP>:<GSS-Port>/vod.3gp?userid=8618807880000&subcontentid=9013100020090514012300...,
Wherein, GSS-IP is the address of the streaming media server that can serve in general headquarters' node, GSS-Port is the port numbers that this streaming media server provides the video stream media service, GSE encapsulates a RTSP response message then, to fill out be 302 (MovedTemporarily to result code in the message, be redirected, indicating to finish request must further operate), simultaneously newly-generated URL is inserted in position (Location) parameter field in the response packet header (response-header), return to province then and divide streaming media server.
After step S508, LSS receive that result code is 302 RTSP response, in the response message bag, take out new URL the Location territory of response-header and initiate relay request.
Step S509, GSS navigate to the entity file of being asked after receiving the service request of LSS, and beginning sends bit stream data to LSS.
Step S510, LSS is transmitted to subscriber equipment with the bit stream data of receiving, and beginning provides order program service to the user.
Be that example describes in the present embodiment with the order program service, in like manner, also can expand to live and field such as media services such as download grade.The above only is a kind of execution mode preferably of the present invention, but protection scope of the present invention is not limited thereto, and all should belong to the scope of the present invention based on the various substitutions and modifications that essence of the present invention is carried out.
Device embodiment
According to embodiments of the invention, a kind of media service system is provided, Fig. 6 is the structured flowchart according to the media service system of the embodiment of the invention, as shown in Figure 6, Centroid can connect one or more fringe nodes, fringe node comprises: first receiver module 62, first sending module 64, second receiver module 66, second sending module 68 are described in detail this fringe node below.
First receiver module 62 is used to receive the media service request from subscriber equipment, and wherein, media service request is used to ask media resource; Judge module 60 is connected to first receiver module 62 and first sending module 64, and this module is used to judge that can fringe node provide media resource for subscriber equipment; First sending module 64 is connected to first receiver module 62, and being used for can not provide under the situation of media resource for subscriber equipment at definite fringe node, sends a request message to Centroid; Second receiver module 66 is connected to first sending module 64, and fringe node receives from the media resource of Centroid in response to request message; Second sending module 68 is connected to second receiver module 66, is used for media resource is sent to subscriber equipment.
Fig. 7 is the structured flowchart concrete according to the media service system of the embodiment of the invention, and as shown in Figure 7, second receiver module 66 comprises: first receives submodule 662, initiation submodule 664, the second reception submodule 666, below this is described in detail.
First receives submodule 662, is used to receive the URL that is used to provide the media server address of media resource from carrying of Centroid; Initiate submodule 664 and be connected to the first reception submodule 662, be used for initiating media service request to the media server of URL correspondence according to URL; Second receives submodule 666, is connected to initiate submodule 664 and be used to receive media resource from the media server of URL correspondence.
As shown in Figure 7, first sending module 64 comprises: first sends submodule 642 and second sends submodule 644, wherein, first sends submodule 642, be used for sending the URL of the media server address that carries fringe node to subscriber equipment, wherein, carry the sign that fringe node can not provide media resource among the URL, so that subscriber equipment is initiated media service request according to URL to the media server of URL correspondence; Second sends submodule 644, is used for sending a request message to Centroid after the service request that receives from subscriber equipment.
As shown in Figure 7, this fringe node also comprises: preserve module 74, this module is used for preserving media resource according to predetermined policy.
As shown in Figure 7, this Centroid comprises: the 3rd receiver module 76, the 3rd sending module 78 are described in detail this Centroid below.
The 3rd receiver module 76 is used for receiving from the fringe node request message, and wherein, request message is used to ask media resource: the 3rd sending module 78 is connected to the 3rd receiver module 76, is used for media resource is sent to fringe node.
As can be seen, the method of describing by the present invention makes each province's partial node according to the partial content resource in the certain strategy saved system, simultaneously can provide service by the mode of relaying for the non-existent content of local node, can solve the node content storage effectively and the contradiction of stablizing between the service is provided, optimize the resource sharing capability of system preferably.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and carry out by calculation element, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (10)

1. a media service method is characterized in that, comprising:
Fringe node receives the media service request from subscriber equipment, and wherein, described media service request is used to ask media resource;
Can described flange node judges it provide described media resource for described subscriber equipment;
Described fringe node is under the situation not in judged result, sends a request message to Centroid;
Described fringe node receives from the described media resource of described Centroid in response to described request message, and described media resource is sent to described subscriber equipment.
2. method according to claim 1 is characterized in that, described fringe node receives and comprises from the described media resource of described Centroid in response to described request message:
Described Centroid sends the URL that carries the media server address that is used to provide described media resource to described fringe node;
Described fringe node is initiated media service request according to described URL to the media server of described URL correspondence, and receives the described media resource from the media server of described URL correspondence.
3. method according to claim 1 is characterized in that, described fringe node sends described request message to described Centroid and comprises:
Described fringe node sends the URL of the media server address that carries described fringe node to described subscriber equipment, wherein, carries the sign that described fringe node can not provide described media resource among the described URL;
Described subscriber equipment is initiated media service request according to described URL to the described media server of described URL correspondence;
The media server of described URL correspondence receives after the service request from described subscriber equipment, sends described request message to described Centroid.
4. according to each described method in the claim 1 to 3, it is characterized in that, is under the situation that is in described judged result, and described fringe node sends to described subscriber equipment with described media resource.
5. method according to claim 1 is characterized in that, before described fringe node received described media service request from described subscriber equipment, described method also comprised:
Described fringe node is preserved media resource according to predetermined policy.
6. a media service system comprises fringe node and Centroid, it is characterized in that, described fringe node comprises:
First receiver module is used to receive the media service request from subscriber equipment, and wherein, described media service request is used to ask media resource;
Judge module is used to judge that described fringe node can provide described media resource for described subscriber equipment;
First sending module, the judged result that is used at described judge module is under the situation not, sends a request message to Centroid;
Second receiver module, described fringe node receive from the described media resource of described Centroid in response to described request message;
Second sending module is used for described media resource is sent to described subscriber equipment.
7. system according to claim 6 is characterized in that, described second receiver module comprises:
First receives submodule, is used to receive the URL that is used to provide the media server address of described media resource from carrying of described Centroid;
Initiate submodule, be used for initiating media service request to the media server of described URL correspondence according to described URL;
Second receives submodule, is used to receive the described media resource from the media server of described URL correspondence.
8. system according to claim 6 is characterized in that, first sending module comprises:
First sends submodule, be used for sending the URL of the media server address that carries described fringe node to described subscriber equipment, wherein, carry the sign that described fringe node can not provide described media resource among the described URL, so that described subscriber equipment is initiated media service request according to described URL to the described media server of described URL correspondence;
Second sends submodule, is used for after the service request that receives from described subscriber equipment, sends described request message to described Centroid.
9. system according to claim 7 is characterized in that, described fringe node also comprises:
Preserve module, be used for preserving media resource according to predetermined policy.
10. according to each described system in the claim 7 to 9, it is characterized in that described Centroid comprises:
The 3rd receiver module is used for receiving from described fringe node request message, and wherein, request message is used to ask media resource:
The 3rd sending module is used for described media resource is sent to described fringe node.
CN200910164084.1A 2009-08-10 2009-08-10 media service method and system Active CN101626385B (en)

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Application Number Priority Date Filing Date Title
CN200910164084.1A CN101626385B (en) 2009-08-10 2009-08-10 media service method and system
PCT/CN2010/073950 WO2011017976A1 (en) 2009-08-10 2010-06-13 Method and system for media service

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