CN101212320B - Method, system, and network TV terminal for accessing network TV service - Google Patents
Method, system, and network TV terminal for accessing network TV service Download PDFInfo
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- CN101212320B CN101212320B CN200610168298A CN200610168298A CN101212320B CN 101212320 B CN101212320 B CN 101212320B CN 200610168298 A CN200610168298 A CN 200610168298A CN 200610168298 A CN200610168298 A CN 200610168298A CN 101212320 B CN101212320 B CN 101212320B
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Abstract
The invention discloses a method for accessing Internet protocol TV (IPTV) service; which comprising the steps as follows: a request for the IPTV service is sent to the service description information supply device to request for acquiring the service description information; the service description information of the IPTV returned by the service description information supply device is received; according to the returned service description information, an IPTV service supply device which provides the IPTV service is accessed to acquire the IPTV service. Furthermore, the invention also provides a system for providing the IPTV service and an IPTV terminal. By adopting the method, system and IPTV terminal provided by the invention, bandwidth of the system can be saved so that unnecessary service description message can be avoided from being received and the burden of the IPTV terminal is reduced as well.
Description
Technical field
The present invention relates to Web TV (IPTV) technology, system and a kind of IPTV terminal of a kind of IPTV of visit service method, a kind of IPTV of providing service is provided especially.
Background technology
Fig. 1 is in the prior art, the system construction drawing of IPTV terminal access IPTV service.In this system, comprise IPTV terminal 11, service description information generator 12 and IPTV service generator 13.Service description information generator 12 is used for tabulating to the information on services that IPTV terminal 11 is taken turns after broadcasting renewal when the service description information of IPTV service generator 13 changes.IPTV terminal 11, the IPTV that is used for visiting according to self needs serves, and takes turns the information on services tabulation of broadcasting from service description information generator 12 and finds corresponding service access information, and serve according to the IPTV of the service description information visit of finding self needs.IPTV serves generator 13, and being used for provides required IPTV service to IPTV terminal 11.
Wherein, relation between information on services tabulation and the service description information is: owing to service description information generator a plurality of IPTV service generators good at managing usually, therefore can write down the service description information of each IPTV service generator in the service description information generator; And then the relation between information on services tabulation and the service description information is: the information on services tabulation is used to write down the service description information of each IPTV service generator.
When the service description information of certain IPTV service generator of being managed when the service description information generator changes, for example the reference address of this IPTV service generator changes, the service description information generator will upgrade the information on services tabulation of self, and the tabulation of the information on services after all IPTV terminal carousel are upgraded.At this moment, each IPTV terminal has to be forced to receive the information on services tabulation that service description information generator wheel is broadcast.Therefore, the such update mode of service description information clearly not only wasted the bandwidth of system greatly, and terminal has increased white elephant.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of visit IPTV service method, uses this method and can make the IPTV terminal reduce the waste of bandwidth in visit IPTV service process.
Simultaneously, another main purpose of the present invention is to provide a kind of system of the IPTV of providing service, uses the bandwidth resources waste that this system provides IPTV can reduce the IPTV terminal to the IPTV terminal.
In addition, another main purpose of the present invention is to provide a kind of IPTV terminal, and this IPTV terminal can reduce the waste of bandwidth in visit IPTV service process.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention provides a kind of accesses network television IPTV service method, comprise: send the IPTV service request information to the service description information generator, the service description information of acquisition request IPTV service carries the service identifiers of IPTV service at least in the described IPTV service request information; Receive the service description information of the IPTV service that the service description information generator returns; According to the described service description information that returns, visit provides the IPTV service generator of described IPTV service, obtains described IPTV service.
A kind of system of the IPTV of providing service also is provided in the present invention, this system comprises: the service description information generator, be used to receive the IPTV service request information that the IPTV terminal sends, and return the service description information that IPTV serves, carry the service identifiers of IPTV service in the described IPTV service request information at least; IPTV serves generator, and being used for provides IPTV service to the IPTV terminal; The IPTV terminal, be used for sending the IPTV service request information to the service description information generator, the service description information of acquisition request IPTV service, receive the service description information of the IPTV service that the service description information generator returns, the IPTV service generator of described IPTV service is provided and obtains described IPTV service according to the described service description information visit of returning.
In addition, the present invention also provides a kind of IPTV terminal, comprising:
Be used for sending the IPTV service request information to the service description information generator, the unit of the service description information of acquisition request IPTV service carries the service identifiers of IPTV service at least in the described IPTV service request information; Be used to receive the unit of the service description information of the IPTV service that the service description information generator returns; Be used for providing the IPTV service generator of described IPTV service, and obtain the unit of described IPTV service according to the described service description information visit of returning.
A kind of visit IPTV service method provided by the present invention, by by the IPTV terminal when the needs visits IPTV service, send the mode of the service description information of this IPTV service of request to the service description information generator; Make the service description information generator after receiving this request,, return the service description information of this IPTV service to the IPTV terminal at the current IPTV service that needs visit.In addition, a kind of system and a kind of IPTV terminal of the IPTV of providing service also is provided in the present invention.Can save the bandwidth of system by using method and system provided by the invention, also make the IPTV terminal only in the time self need visiting the IPTV service, just obtain the service description information of response, need not receive unnecessary service description information, reduced the burden of IPTV terminal.
Simultaneously, in method provided by the invention, by service is provided with the service providing server of supporting the different terminals ability at IPTV, makes the IPTV terminal visit corresponding service providing server, thereby can on the IPTV terminal, reach best display effect according to the terminal capability of self.For example, the transmission rate that the IPTV terminal receives stream is to be fit to own bandwidth, and then the video pictures of IPTV terminal will be smooth more.
Description of drawings
To make clearer above-mentioned and other feature and advantage of the present invention of those of ordinary skill in the art by describe exemplary embodiment of the present invention in detail with reference to accompanying drawing below, in the accompanying drawing:
Fig. 1 is the system construction drawing of IPTV terminal access IPTV service in the prior art;
Fig. 2 is the flow chart of preferred embodiment method of the present invention;
Fig. 3 provides the system of IPTV service and the structure chart between the IPTV terminal for preferred embodiment of the present invention.
Embodiment
For making purpose of the present invention, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in further detail.
In technical scheme provided by the present invention, when the IPTV terminal need be visited the IPTV service, send the IPTV service request information to the service description information generator at the described IPTV service that needs to obtain; The service description information generator returns the service description information of described IPTV service according to the IPTV service request information of receiving to the IPTV terminal; The IPTV terminal is according to the service description information that returns, and visit provides the IPTV service generator of described IPTV service, obtains described IPTV service.In technical scheme of the present invention, because the service description information generator is when IPTV terminal request IPTV serves, just return service description information to the IPTV terminal, therefore reduce the bandwidth of IPTV terminal in obtaining the service description information process, and then saved the bandwidth of IPTV terminal in visit IPTV service process.
In addition, terminal capability diversity at present IPTV terminal, if IPTV service generator only adopts certain single-mode to provide IPTV service to the IPTV terminal, then can make the IPTV service on the IPTV terminal, not reach best display effect, also might make some IPTV terminal have no idea to enjoy the IPTV service that IPTV service generator provides.Here the terminal capability of indication comprises one or more in Streaming Media host-host protocol, audio format, video code model and the host-host protocol that the IPTV terminal supports.
Therefore changing an original service generator in the present invention only provides a kind of situation of IPTV service of terminal capability, but at a kind of IPTV service the service providing server of supporting the different terminals ability is being set.The service providing server of indication among the present invention can be independent equipment, also can be functional units different in certain equipment.When this different service providing server at the different terminals capabilities setting is positioned at an IPTV service generator, can distinguish with port numbers and/or IP address.At this moment, send in the IPTV service request information of service description information generator, can carry the terminal capability of IPTV terminal self at IPTV; At service description information generator end, it then can be according to the terminal capability that carries, and finding provides the IPTV of this terminal capability service providing server; Return corresponding service description information to the IPTV terminal.
Fig. 2 is the flow chart of preferred embodiment method of the present invention.In flow process shown in Figure 2, be provided with user agent's device, IPTV terminal and service description information generator be used for interactive information between IPTV terminal and the service description information generator is carried out format conversion, so that all can be received the information that self can discern.Simultaneously, in IPTV service generator, be same IPTV service, the service providing server of supporting the different terminals ability is set respectively; And in the service description information generator, be provided with the service identifiers and the terminal capability of the IPTV service of each service providing server support.
In this preferred embodiment, terminal capability is encapsulated in the Session Description Protocol SDP information, the IPTV service request information that SDP information then is encapsulated in the SIP form is that example is introduced.Detailed process is as follows:
In step 201, when the IPTV terminal need be visited the IPTV service, send sip request message to user agent's device, be the IPTV service request information among the present invention, wherein carry the conversation initialized protocol URL(uniform resource locator) (SIP URL) of service description information generator, the terminal capability of IPTV terminal, service identifiers and the IP address of IPTV terminal support and the essential information of IP version number this class of IPTV terminal request IPTV service at least.
Wherein describe when the IPTV terminal need be visited the IPTV service, can be that the IPTV terminal needs the IPTV service of new visit or this IPTV terminal visiting an IPTV service at present, but need adjust the playing progress rate of this IPTV service the time.For example: current when the IPTV terminal just at playing stream media, need suspend or during back operation, then the IPTV terminal need be carried out the flow process shown in the following steps 201～205 equally, could obtain required IPTV service.
Here, the service identifiers of the IPTV of the SIP URL of service description information generator, the terminal capability of IPTV terminal and request service all is encapsulated in the SDP information, in the sip request message that carries.Wherein, terminal capability comprises one or more in bandwidth information, video code model and the host-host protocol of Streaming Media host-host protocol that the IPTV terminal supports, audio format, IPTV terminal.
It below is the sip request message that IPTV terminal access CCTV-5 sends to user agent's device, here the terminal capability of supposing this IPTV terminal is: the video file of supporting the MPEG-2 coding, support Real-time Transport Protocol, the transmission rate of IPTV terminal optimal display result is 300k～500k; The service identifiers of CCTV-5 is: 123456789, and the SIP URL of corresponding service description information generator is: sip:iptvservices@huawei.com.The concrete form of sip request message is as follows:
INVITE?sip:iptvservices@huawei.com?SIP/2.0
From:sip:12332515@10.164.34.132 annotates: the IPTV end mark
to：sip:iptvservices@huawei.com
Call-ID:4235234@10.164.34.132 annotates: call out ID
Subject:Get address annotates: address acquisition
CSeq:1 invite annotates: calling sequence number
Content-Type:Application/sdp annotates: SDP information is carried in expression
Content-Length...
V＝0
O=Tony 53,655,678 2346789 IN IP4 10.164.34.132 annotate: conversation description
M=video 49170/2RTP/AVP 32 annotates: coding is the video flowing of MPEG-2 form
A=fmtp:MPEG-232//IPTV annotates: the type of coding that terminal is supported
A=serviceID:123456789 annotates: the ID of service
A=bandwidth:300k～500k annotates: the span of recommending the Streaming Media transmission rate
In step 202, after user agent's device receives the sip request message of IPTV terminal transmission, convert sip request message to form that the service description information generator is supported, and, the request message after the conversion is sent to the service description information generator according to the SIP URL that carries the service description information generator in the sip request message.
When the message format of IPTV terminal and service description information generator be both sides all support message format the time, then do not need the user agent's device in this preferred embodiment.
In step 203, the service description information generator is received the request message that user agent's device sends, the service identifiers that carries in the acquisition request message and the terminal capability of IPTV terminal, and the terminal capability that can support according to each service providing server, find the service providing server that meets this IPTV terminal capability, the service description information of service providing server correspondence is returned to user agent's device.
When not having at different terminal capabilities different service providing servers to be set in advance, then the service description information generator only needs according to the service identifiers that carries in the request message, returns the service description information that the IPTV of this IPTV service service generator is provided to user agent's device.
In step 204, the service description information that user agent's device returns the service description information generator converts the sip response message of Session Initiation Protocol form to, returns to the IPTV terminal.
According to the example of CCTV-5 in the step 201, the sip response message that user agent's device returns to the IPTV terminal can be following form:
SIP/2.0200OK
From:sip:iptvservices@huawei.com annotates: the sip message transmit leg
To:sip:12332515@10.164.34.132 annotates: the sip message recipient
Call-ID:4235234@10.164.34.132 annotates: call out ID
CSeq:1?invite
Content-Type:Application/sdp
Content-Length...
V＝0
o＝Media?server
C=IN IP4224.2.36.42 annotates: multicast address
M=video 4988/2RTP/AVP 3 annotates: RTP port numbers 4988
A=fmtp:MPEG-2 annotates: the video coding mode
A=serviceID:123456789 annotates: service ID
In step 205, the IPTV terminal is according in the sip response message, the service description information that current IP TV service service providing server is provided that carries, the IPTV service of the required visit of visit IPTV terminal.
According to the IPTV service of IPTV terminal needs visit, there are two kinds the address of the service providing server in the service description information that the IPTV terminal is received.A kind of is the address descriptor information of clean culture, and another kind of is the address descriptor information of multicast.When receive be the address descriptor information of clean culture the time, the IPTV terminal is then according to the application scenario of reality, use real-time stream media protocol (RTSP, Real Time StreamingProtocol), Streaming Media host-host protocol (RTP, Real-Time Applications) or RTP Control Protocol (RTP Control Protocol) RTCP visit the IPTV service of clean culture; When receive be the address descriptor information of multicast the time, then according to practical application, use IGMP, RTP or RTCP to visit the IPTV service of multicast.
The structure chart that Fig. 3 is connected with the IPTV terminal for the system that the IPTV service is provided in the preferred embodiment of the present invention.Wherein, this system comprises: service description information generator 32 and IPTV service generator 33.Service description information generator 32 is used to receive the IPTV service request information that IPTV terminal 31 sends, and returns the service description information of IPTV service.IPTV serves generator 33, and being used for provides IPTV service to IPTV terminal 31.Wherein, IPTV service generator 33 comprises: a plurality of service providing servers of supporting the IPTV service of different terminals ability respectively.Accordingly, service description information generator 32 according to the terminal capability of IPTV terminal 31, returns the service description information of the service providing server of supporting described terminal capability to IPTV terminal 31.
Further comprise in this system: user agent's device 34 is used to receive the IPTV service request information of IPTV terminal 31; Convert described IPTV service request information to form that service description information generator 32 is supported, and send to service description information generator 32; Receive the service description information that service description information generator 32 returns to IPTV terminal 31, convert described service description information to form that IPTV terminal 31 can be supported, send IPTV terminal 31.Here, user agent's device 34 and service description information generator 32 are positioned at same physical entity.
IPTV terminal 31 sends the IPTV service request information comprising being used for to service description information generator 32, the unit of the service description information of acquisition request IPTV service; Be used to receive the unit of the service description information of the IPTV service that service description information generator 32 returns; Be used for providing the IPTV service generator 33 of described IPTV service, and obtain the unit of described IPTV service according to the described service description information visit of returning.Wherein, carried terminal ability and service identifiers at least in the IPTV service request information.What suppose in Fig. 3 is IPTV terminal 31 is obtained the IPTV service from service providing server C situation.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being made, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1. an accesses network television IPTV service method is characterized in that, comprising:
Send the IPTV service request information to the service description information generator, the service description information of acquisition request IPTV service carries the service identifiers of IPTV service at least in the described IPTV service request information;
Receive the service description information of the IPTV service that the service description information generator returns;
According to the described service description information that returns, visit provides the IPTV service generator of described IPTV service, obtains described IPTV service.
2. method according to claim 1 is characterized in that, carries the conversation initialized protocol URL(uniform resource locator) SIP URL of the corresponding service description information generator of described IPTV service in the described IPTV service request information at least; Describedly send the IPTV service request information to the service description information generator and be: send described IPTV service request information to the service description information generator according to described SIP URL.
3. method according to claim 1 and 2 is characterized in that,
At different terminal capabilities different service providing servers is arranged in the described IPTV service generator, in the service description information generator, preserve the service identifiers and the terminal capability of the IPTV service that each service providing server supports, carried terminal ability at least in the described IPTV service request information;
The service description information of the IPTV service that described service description information generator returns, be according to the described terminal capability and the service identifiers that carry in the IPTV service request information by the service description information generator, find the service providing server of supporting described terminal capability IPTV service, the service description information corresponding of generation with described service providing server.
4. method according to claim 3 is characterized in that, described IPTV service request information is the SIP form; Described terminal capability is encapsulated in the Session Description Protocol SDP information, and described SDP information is encapsulated in the IPTV service request information of described SIP form.
5. method according to claim 4, it is characterized in that, describedly send the IPTV service request information and the described service description information of the IPTV service that the service description information generator returns of receiving carries out format conversion by user agent's device to the service description information generator.
6. method according to claim 3 is characterized in that, described terminal capability comprises: one or more in the bandwidth information of Streaming Media host-host protocol, audio format, video code model, host-host protocol and IPTV terminal that the IPTV terminal is supported.
7. one kind provides IPTV the system of service, it is characterized in that this system comprises:
The service description information generator is used to receive the IPTV service request information that the IPTV terminal sends, and returns the service description information of IPTV service, carries the service identifiers of IPTV service in the described IPTV service request information at least;
IPTV serves generator, and being used for provides IPTV service to the IPTV terminal;
The IPTV terminal, be used for sending the IPTV service request information to the service description information generator, the service description information of acquisition request IPTV service, receive the service description information of the IPTV service that the service description information generator returns, the IPTV service generator of described IPTV service is provided and obtains described IPTV service according to the described service description information visit of returning.
8. system according to claim 7 is characterized in that, described IPTV service generator comprises: a plurality of service providing servers of supporting the IPTV service of different terminals ability respectively;
Described service description information generator according to the terminal capability of IPTV terminal, returns the service description information of the service providing server of supporting described terminal capability to the IPTV terminal.
9. according to claim 7 or 8 described systems, it is characterized in that this system further comprises:
User agent's device is used to receive the IPTV service request information of IPTV terminal; Convert described IPTV service request information to form that the service description information generator is supported, and send to the service description information generator; Receive the service description information that the service description information generator returns to the IPTV terminal, convert described service description information to form that the IPTV terminal can be supported, send to the IPTV terminal.
10. system according to claim 9 is characterized in that, described user agent's device and service description information generator are positioned at same physical entity.
11. an IPTV terminal is characterized in that, comprising:
Be used for sending the IPTV service request information to the service description information generator, the unit of the service description information of acquisition request IPTV service carries the service identifiers of IPTV service at least in the described IPTV service request information;
Be used to receive the unit of the service description information of the IPTV service that the service description information generator returns;
Be used for providing the IPTV service generator of described IPTV service, and obtain the unit of described IPTV service according to the described service description information visit of returning.
12. terminal according to claim 11 is characterized in that:
At least carried terminal ability in the described IPTV service request information.
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| CN200610168298A CN101212320B (en) | 2006-12-25 | 2006-12-25 | Method, system, and network TV terminal for accessing network TV service |
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| CN200610168298A CN101212320B (en) | 2006-12-25 | 2006-12-25 | Method, system, and network TV terminal for accessing network TV service |
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| CN101212320B true CN101212320B (en) | 2010-05-19 |
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| CN101394426B (en) * | 2008-11-10 | 2012-06-27 | 中国联合网络通信集团有限公司 | Internet service processing method and system based on network television |
| KR101753413B1 (en) * | 2009-01-28 | 2017-07-19 | 헤드워터 리서치 엘엘씨 | Adaptive ambient sevices |
| CN102158390B (en) * | 2010-08-31 | 2014-07-09 | 华为软件技术有限公司 | Method and device for adjusting and processing access bandwidth |
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| CN1798323A (en) * | 2004-12-29 | 2006-07-05 | 华为技术有限公司 | Video terminal and method of implementing services of stream media |
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| CN1798323A (en) * | 2004-12-29 | 2006-07-05 | 华为技术有限公司 | Video terminal and method of implementing services of stream media |
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