CN102638731B - A kind of optimization method and system of user's program request - Google Patents
A kind of optimization method and system of user's program request Download PDFInfo
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- CN102638731B CN102638731B CN201110415116.8A CN201110415116A CN102638731B CN 102638731 B CN102638731 B CN 102638731B CN 201110415116 A CN201110415116 A CN 201110415116A CN 102638731 B CN102638731 B CN 102638731B
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- 238000005457 optimization Methods 0.000 title abstract description 5
- 230000011664 signaling Effects 0.000 claims abstract description 29
- 230000005540 biological transmission Effects 0.000 claims description 9
- 230000004044 response Effects 0.000 claims description 7
- 238000012546 transfer Methods 0.000 description 4
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Abstract
The present invention provides a kind of optimization method and system of user's program request, the described method includes：Streaming media server asks the program in program of the local search less than STB program requests, to MLSS；The streaming media server communicates with the streaming media server of the redirection according to the streaming media server address of redirection and the parameter information of the program that receive MLSS returns, obtains programme content and be sent to STB.The present invention is communicated by streaming media server with the streaming media server after redirecting, reduce the Signalling exchange between STB and streaming media server, improve the efficiency of STB, when streaming media server especially after redirection is HTTP server, it can also realize that HTTP server provides the RTSP functions of service for STB, it can be not support to redirect STB, PC of RTSP signalings and local user's offer order program service that service content can be provided, optimize user's program request.
Description
Technical Field
The invention relates to the technical field of user on-demand, in particular to a method and a system for optimizing user on-demand.
Background
In an interactive network television (IPTV) system, a media server may provide on-demand services to users. Here, the user may be a set-top box, PC, mobile phone, or the like terminal. How to provide the on-demand service for the user, how to provide the quick on-demand service for the user, how to improve the processing efficiency of the set top box, and how to quickly provide the service for the set top box are key problems of optimizing the on-demand of the user and improving the efficiency of the IPTV system service.
The following describes a flow of a user request in the current IPTV system with reference to the structure of the IPTV system shown in fig. 1: in the IPTV system, a user needs to broadcast a certain program, a Set Top Box (STB) needs to send a Real Time Streaming Protocol (RTSP) signaling to a node device to which the Set Top Box (STB) belongs, and after successful interaction, the node device to which the Set Top Box (STB) belongs sends a program code stream to the STB. If the attributive node equipment does not have the content requested by the STB, the attributive node equipment inquires the address of the node equipment with the content from a Media Location Service System (MLSS), a redirection signaling is returned to the STB through an RTSP signaling, the signaling comprises the redirection address, after receiving the redirection message, the STB sends the RTSP signaling to the new node equipment, and the new node equipment provides the request Service for the user.
In the prior art, the flow of the user on demand has certain limitation. Mainly comprises several aspects: firstly, some terminals such as a set top box or a PC may not support RTSP redirection signaling, which may result in that there is no content for a user to watch in a node device to which the user belongs, and other node devices have the content, even if the node device to which the user belongs returns the redirection signaling to the user, the user cannot go to other nodes for service, resulting in a failure in ordering; secondly, the number of times of the set top box signaling processing can be increased by the redirection operation, so that the user's on-demand delay is caused, and the set top box processing signaling is burdened; third, for some HTTP servers capable of providing only HTTP services, even if the node device to which the user belongs returns a new redirection address, since the redirected node device can provide only HTTP services and the set-top box only supports RTSP signaling, the redirected node device cannot perform RTSP signaling interaction with the set-top box, resulting in that even if the redirected node device is an HTTP server, it has content that can be provided, but cannot provide on-demand services for the set-top box.
Disclosure of Invention
In view of this, the present invention is directed to a method and a system for optimizing a user's on-demand program, which can optimize the user's on-demand program.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a method for optimizing a user's on-demand, the method comprising:
when the streaming media server cannot locally inquire the program requested by the STB, requesting the program from the MLSS;
and the streaming media server communicates with the redirected streaming media server according to the address of the redirected streaming media server and the parameter information of the program, which are received and returned by the MLSS, acquires the program content and sends the program content to the STB.
Further, the method further comprises:
the STB sends RTSP signaling to a streaming media server to which the STB belongs according to program on-demand information input by a user;
and after receiving the RTSP signaling, the streaming media server inquires whether the program exists locally.
Wherein, the streaming media server requests the program to the MLSS as follows:
the streaming media server sends a request for acquiring the index file of the program to the MLSS;
and when the streaming media server successfully receives the URL and the size of the index file returned by the MLSS, acquiring a request of the basic speed file of the program from the MLSS.
Further, after the streaming media server sends a request for obtaining the index file of the program to the MLSS, the method further includes:
and when the streaming media server does not successfully receive the index file returned by the MLSS, returning on-demand failure to the STB.
Wherein, the said streaming media server communicates with the address of the said redirected streaming media server according to the address of the redirected streaming media server and the parameter information of the said program which are received and returned from the said MLSS, and the program content is obtained and sent to the STB:
after the streaming media server successfully receives the URL and the size of the basic rate file returned by the MLSS, the URL and the size of the index file and the basic rate file and the applied HTTP port are sent to the redirected streaming media server through a content transmission request of an HTTP protocol;
and the redirected streaming media server responds to the request of content transmission and sends the program content ordered by the STB to the streaming media server, and the streaming media server sends the acquired program content to the STB.
A system for optimizing customer demand, comprising an STB, the system further comprising: streaming media server, MLSS; wherein,
the streaming media server is used for requesting the program from the MLSS when the program requested by the STB cannot be inquired locally; and according to the received address of the redirected streaming media server returned by the MLSS, communicating with the redirected streaming media server to obtain program content and sending the program content to the STB.
The STB is used for sending RTSP signaling to a streaming media server to which the STB belongs according to program on demand information input by a user;
the streaming media server is specifically configured to query whether the program exists locally after receiving the RTSP signaling.
The streaming media server is specifically configured to send a request for obtaining an index file of the program to the MLSS; and after successfully receiving the URL and the size of the index file returned by the MLSS, acquiring a request of the basic rate file of the program from the MLSS.
The streaming media server is specifically configured to return an on-demand failure to the STB when the index file returned by the MLSS is not successfully received.
The streaming media server is specifically configured to send, after successfully receiving the URL and size of the basic rate file returned by the MLSS, the URL and size of the index file and the basic rate file and an applied HTTP port to the redirected streaming media server through a content transfer request of an HTTP protocol;
the redirected streaming media server is specifically configured to send the program content ordered by the STB to the streaming media server in response to the content creation request, and the streaming media server sends the acquired program content to the STB.
The invention communicates with the redirected streaming media server through the streaming media server, reduces the signaling interaction between the set top box and the streaming media server, improves the efficiency of the STB, particularly can realize the function of providing the RTSP service for the STB by the HTTP server when the redirected streaming media server is the HTTP server, can provide the on-demand service for the STB and the PC which do not support the redirected RTSP signaling and do not have the service content locally, and optimizes the on-demand service of the user.
Drawings
Fig. 1 is a schematic structural diagram of a conventional IPTV system;
FIG. 2 is a schematic diagram of an implementation flow of the user on-demand optimization method of the present invention;
FIG. 3 is a flowchart illustrating a first implementation of a method for optimizing a user's on-demand according to a first embodiment of the present invention;
FIG. 4 is a flowchart illustrating a second implementation of the method for optimizing a user's on-demand according to the present invention;
FIG. 5 is a schematic structural diagram of a system for optimizing a user's request according to the present invention.
Detailed Description
The basic idea of the invention is as follows: when the streaming media server cannot locally inquire the program requested by the STB, requesting the program from the MLSS; and the streaming media server communicates with the redirected streaming media server according to the address of the redirected streaming media server and the parameter information of the program, which are received and returned by the MLSS, acquires the program content and sends the program content to the STB.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings by way of examples.
Fig. 2 shows a flow of implementing the method for optimizing the user's request according to the present invention, and as shown in fig. 2, the method includes the following steps:
step 201, when the streaming media server cannot locally inquire the program requested by the STB, requesting the program from the MLSS;
wherein, prior to this step, the method further comprises: the STB sends RTSP signaling to a streaming media server to which the STB belongs according to program on-demand information input by a user; and after receiving the RTSP signaling, the streaming media server inquires whether the program information exists locally.
The streaming media server requesting the program from the MLSS specifically includes: the streaming media server sends a request for acquiring the index file of the program to the MLSS;
when the streaming media server successfully receives the URL and the size of the index file returned by the MLSS, a request for acquiring the basic rate file of the program from the MLSS is sent; and when the streaming media server does not successfully receive the index file returned by the MLSS, returning on-demand failure to the STB.
Step 202, the streaming media server communicates with the redirected streaming media server according to the address of the redirected streaming media server and the parameter information of the program, which are received and returned by the MLSS, and obtains the program content and sends the program content to the STB.
Specifically, after the streaming media server successfully receives the URL and size of the basic rate file returned by the MLSS, the URL and size of the index file and the basic rate file, and the applied HTTP port are sent to the redirected streaming media server through a content transfer request of an HTTP protocol;
and the redirected streaming media server responds to the request of content transmission and sends the program content ordered by the STB to the streaming media server, and the streaming media server sends the acquired program content to the STB.
Fig. 3 shows a flow of implementing a first specific embodiment of the method for optimizing a user on demand, as shown in fig. 3, in the first embodiment, a process of implementing communication between a streaming media server of an edge Content Delivery Network (CDN) and a backbone HTTP server is specifically described, where the backbone HTTP server in fig. 3 is a redirected streaming media server; this embodiment one comprises the following steps:
step 301, receiving a request for on-demand content sent by an STB by an MLSS of province;
step 302-;
step 304, when the relay is needed, adding a field with the needrelay of 1 in the response URL, and sending the response URL to the streaming media server by returning redirection information;
step 305, the streaming media server judges the value of the needrelay, if the needrelay is 0, step 306 is executed, and if the needrelay is 1, step 307 is executed;
step 306, when the newrelay is 0, the streaming media server returns the media code stream requested by the user to the STB;
step 307, when the needrelay is 1, the streaming media server sends a relay information query message to the provincial MLSS;
step 308-;
the province MLSS queries the download location of the requested content in the backbone HTTP server. After receiving the positioning request, if the required positioning type is an INDEX file type (namely the SubType value is 'INDEX'), the backbone HTTP server returns an INDEX file downloading identifier of the content; if the positioning type requiring positioning is a basic speed file or an double speed file, the downloading identification of the double speed file is returned. Wherein the TransferSessionID assembly format in the returned response is as follows:
subfype? time xxx & life xxx;
basic file, this time the concatenation is pathname/xxxx.gyts/base.ts? time xxx & life xxx;
the subtrype is equal to URI speed file, the TransferContentID style requested at this time is "xxxx. pathname/TransferContentID? time xxx & life xxx.
After receiving a content positioning request message sent by a streaming media server through a province MLSS, a backbone HTTP server judges whether the content exists, and if so, returns a transmission port and a transmission identifier of the positioned content; otherwise, returning relative HTTP error code to support positioning of index file and speed doubling file
Step 310, the province MLSS returns the acquired relay information to the streaming media server;
wherein, the relay information comprises the address of the redirected streaming media server, the parameter information of the on-demand program and the like;
step 311, in addition to step 312, the streaming media server communicates with a redirected streaming media server, that is, the backbone HTTP server in fig. 3, according to the obtained relay information, and obtains an HTTP code stream;
specifically, the streaming media server sends a content transfer request message or a content download request message to the backbone HTTP server, supporting download by scope. Wherein the interface attributes conform to the standard HTTP1.1 specification.
After receiving a content transmission request sent by a streaming media server, a backbone HTTP server sends the request content to the streaming media server in an HTTP chunk coding mode, and the chunk with the length of 0 marks the end of content sending, so as to support content downloading according to the range. Wherein the interface attributes conform to the standard HTTP1.1 specification.
Step 313, the streaming media server returns the acquired media code stream to the STB.
Fig. 4 shows an implementation flow of a second specific embodiment of the method for optimizing a user on demand, as shown in fig. 4, in the second embodiment, a home streaming server and a redirected streaming server belong to the same MLSS management, where the redirected streaming server is an HTTP server; this embodiment comprises the following steps:
step 401, the STB sends DESCRIBE request content to the streaming media server to which the STB belongs;
step 402, when the request content is not queried locally, the attributive streaming media server searches the request content from the database of the MLSS according to the content of the received information;
step 403, when finding out the address of the streaming media server where the requested content is located, the MLSS returns a redirected streaming media server address to the home streaming media, where the redirected streaming media server address is the address of the streaming media server where the requested content is located;
step 404, the attributive streaming media server requests to obtain an index file from the MLSS;
step 405, the MLSS returns the acquisition success to the attributive streaming media server;
step 406, the home streaming media server requests to obtain a basic rate file from the MLSS;
step 407, the MLSS returns the acquisition success to the affiliated streaming media server;
step 408, the attributive streaming media server returns 200OK to the STB;
step 409, the STB sends SETUP to the affiliated streaming media server;
step 410, the attributive streaming media server applies for the MSTU resource and the HTTP port to its database through the MLSS;
step 411, the MLSS returns success;
step 412, the affiliated streaming media server opens the MSTU channel, and sends the index file, the basic rate file, the HTTP port and other parameters to the redirected streaming media server;
step 413, the redirected streaming media server returns the streaming media to the home streaming media server after the streaming media is successfully opened;
step 414, the attributive streaming media server returns 200OK to the STB;
step 415, the STB sends PLAY signaling to the home streaming media server;
step 416, the attributive streaming media server sends a modified MSTU channel signaling to the redirected streaming media server;
step 417, the redirected streaming media server returns the successful modification to the attributive streaming media server;
in step 418, the affiliated streaming media server returns 200OK to the STB, and thus, the transmission and playing of the media code stream are successful.
Fig. 5 shows the structure of the optimization system for user's request of the present invention, as shown in fig. 5, the system includes: an STB, further comprising: a streaming media server and a media positioning server (MLSS); wherein,
the streaming media server is used for requesting the program from the MLSS when the program requested by the STB cannot be inquired locally; and according to the received address of the redirected streaming media server returned by the MLSS, communicating with the redirected streaming media server to obtain program content and sending the program content to the STB.
The STB is used for sending RTSP signaling to a streaming media server to which the STB belongs according to program on demand information input by a user;
the streaming media server is specifically configured to query whether the program information exists locally after receiving the RTSP signaling.
The streaming media server is specifically configured to send a request for obtaining an index file of the program to the MLSS; and after successfully receiving the URL and the size of the index file returned by the MLSS, acquiring a request of the basic rate file of the program from the MLSS.
The streaming media server is specifically configured to return an on-demand failure to the STB when the index file returned by the MLSS is not successfully received.
The streaming media server is specifically configured to send, after successfully receiving the URL and size of the basic rate file returned by the MLSS, the URL and size of the index file and the basic rate file and an applied HTTP port to the redirected streaming media server through a content transfer request of an HTTP protocol;
the redirected streaming media server is specifically configured to send the program content ordered by the STB to the streaming media server in response to the content creation request, and the streaming media server sends the acquired program content to the STB.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (8)
1. A method for optimizing a user's request, the method comprising:
the STB sends RTSP signaling to a streaming media server to which the STB belongs according to program on-demand information input by a user;
after receiving the RTSP signaling, the streaming media server inquires whether the program exists locally;
when the streaming media server cannot locally inquire the program requested by the STB, requesting the program from a media positioning server (MLSS);
the streaming media server communicates with the redirected streaming media server according to the address of the redirected streaming media server and the parameter information of the program, which are returned by the MLSS, so as to obtain the program content and send the program content to the STB; wherein, the redirected streaming media server is an HTTP server.
2. The method of claim 1, wherein the streaming server requests the program from the MLSS as:
the streaming media server sends a request for acquiring the index file of the program to the MLSS;
and when the streaming media server successfully receives the URL and the size of the index file returned by the MLSS, acquiring a request of the basic speed file of the program from the MLSS.
3. The method as claimed in claim 2, wherein after the streaming media server sends the request for obtaining the index file of the program to the MLSS, the method further comprises:
and when the streaming media server does not successfully receive the index file returned by the MLSS, returning on-demand failure to the STB.
4. The method as claimed in claim 2, wherein the step of the streaming media server communicating with the address of the redirected streaming media server according to the address of the redirected streaming media server and the parameter information of the program, which are received from the MLSS, to obtain the program content and send the program content to the STB is:
after the streaming media server successfully receives the URL and the size of the basic rate file returned by the MLSS, the URL and the size of the index file and the basic rate file and the applied HTTP port are sent to the redirected streaming media server through a content transmission request of an HTTP protocol;
and the redirected streaming media server sends the program content ordered by the STB to the streaming media server through a content transmission request response, and the streaming media server sends the acquired program content to the STB.
5. A system for optimizing a user's request, comprising a set-top box STB, characterized in that said system further comprises: a streaming media server and a media positioning server (MLSS); wherein,
the streaming media server is used for requesting the program from the MLSS when the program requested by the STB cannot be inquired locally; according to the received address of the redirected streaming media server returned by the MLSS, the system communicates with the redirected streaming media server to obtain program content and sends the program content to the STB; wherein, the redirected streaming media server is an HTTP server;
the STB is used for sending RTSP signaling to a streaming media server to which the STB belongs according to program on demand information input by a user;
the streaming media server is specifically configured to query whether the program exists locally after receiving the RTSP signaling.
6. The system according to claim 5, wherein the streaming media server is specifically configured to send a request for obtaining the index file of the program to the MLSS; and after successfully receiving the URL and the size of the index file returned by the MLSS, acquiring a request of the basic rate file of the program from the MLSS.
7. The system as claimed in claim 6, wherein the streaming server is specifically configured to return an on-demand failure to the STB when the index file returned by the MLSS is not successfully received.
8. The system according to claim 6, wherein the streaming media server is specifically configured to, after successfully receiving the URL and size of the basic rate file returned by the MLSS, send the URL and size of the index file and the basic rate file and the requested HTTP port to the redirected streaming media server through a content delivery request of an HTTP protocol;
the redirected streaming media server is specifically configured to send the program content ordered by the STB to the streaming media server in response to the content delivery request, and the streaming media server sends the acquired program content to the STB.
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| CN102802052A (en) * | 2012-08-16 | 2012-11-28 | 中兴通讯股份有限公司 | Video on demand program method and device |
| CN103873956B (en) * | 2012-12-12 | 2018-02-13 | 中国电信股份有限公司 | Media file playing method, system, player, terminal and media storage platform |
| WO2015042962A1 (en) * | 2013-09-30 | 2015-04-02 | Telefonaktiebolaget L M Ericsson(Publ) | System and method of a link surfed http live streaming broadcasting system |
| CN106461718B (en) | 2014-07-17 | 2020-07-10 | 西门子公司 | Method and device for facilitating wire breakage detection |
| CN106953892B (en) * | 2017-02-14 | 2020-08-07 | 北京时间股份有限公司 | Method, device and system for acquiring file |
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