CN101895532B - Junction method in IPTV (Internet Protocol Television) system and service USS - Google Patents
Junction method in IPTV (Internet Protocol Television) system and service USS Download PDFInfo
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Abstract
The invention discloses a junction method in an PTV (Internet Protocol Television) system and a service USS. The method comprises the following steps that: during unicast and live broadcast, a service universal multi-service server USS receives the time shift request transmitted by a set top box, wherein the time shift request comprises media requested by the set top box; when media or service ability requested by the set top box is unavailable, the service USS transmits the time shift request to a target USS in which the media requested by the set top box exist; the service USS receives the confirmation message of the target USS, and after the confirmation message confirms that the target USS receives the time shift request, the media stream is transmitted from a source address and a port of the media to a destination address and the port. The junction method in an IPTV system and the service USS ensure that the set top box and the target USS with the ability do not need time shift operation again after establishing a broadcast chain so as to realize seamless time shift.
Description
Technical field
The present invention relates to the communications field, specially refer to method and the service USS of tandem in a kind of IPTV system.
Background technology
IPTV (Internet Protocol Television, IPTV), in IP network, transmit and comprise the multimedias such as video, text, figure and data, and provide service quality/service to experience the manageable multimedia service of (QoS/QoE) guarantee, safety, interactivity and reliability.IPTV is a kind of manageable, multimedia service of needing service quality and safety assurance, a kind of be obviously different from uncontrollable on the Internet can not pipe, quality and safety do not have the Stream Media Application of Guarantee Status.
With reference to Fig. 1, Set Top Box is to service general multi-services device (Universal Service Server at present, USS) while sending request the playing request that enters time shift, do not have in the media of Set Top Box request or the situation of service ability when running into service USS, need obtain the media that need by redirected method, the signaling process of the method is as follows:
Set Top Box in clean culture live state is initiated playing request to service USS, and request enters time shift;
Service USS finds that the media of Set Top Box request do not have in this locality, so initiate inquiry request to position of media service system (Media Location Service System, MLSS), require it to return to contiguous USS;
The node dependence that MLSS is good according to configured in advance, returns to target USS to service USS;
Service USS sends out 302 to Set Top Box and replys, wherein with the address of target USS;
Set Top Box sends out TEARDOWN request to service USS, requires discharge and serve linking of USS;
The address of the target USS of Set Top Box in replying according to 302, initiates order request DESCRIBE request to target USS;
Target USS finds that the media of Set Top Box request exist in this locality, sends 200OK reply to Set Top Box;
Set Top Box sends and sets up link request SETUP request to target USS, and destination address and the port of media carried in this request;
Target USS applies for resource in this locality, sends 200OK to Set Top Box, and carries source address and the port of these media;
After Set Top Box is received replying of SETUP request, send playing request PLAY request to target USS, require target USS to send direct-broadcasting code stream;
Target USS, from source address and the port of the media of appointment, sends media and flows to destination address and port, and returns to 200OK to service USS and reply.
Said process is found out, what in Set Top Box, receive is direct-broadcasting code stream, and Set Top Box can not directly enter time shift, has been equivalent to initiate new link setup flow process because be redirected, Set Top Box cannot be remembered the key assignments of previous button, if need time shift will select the button on remote controller again.
Summary of the invention
Main purpose of the present invention, for method and the service USS of tandem in a kind of IPTV system are provided, makes need not re-start time shift operation after Set Top Box and competent target USS foundation broadcasting link, realizes seamless time shift.
The present invention proposes the method for a kind of IPTV system tandem, comprises step:
When clean culture is live, the time shifting request that service general multi-services device USS receiver top box sends, described time shifting request comprises the media of described Set Top Box request;
When described service USS is during without the media of described Set Top Box request or service ability, send described time shifting request to target USS, described target USS has the media of described Set Top Box request;
Described service USS accepts the acknowledge message of described target USS, and described acknowledge message confirms that described target USS receives after described time shifting request, sends Media Stream to destination address and port from source address and the port of media.
Preferably, described service USS also comprises before sending time shifting request to target USS:
Described service USS is to the contiguous USS list of position of media service system MLSS application;
Described service USS inquires about the USS in described contiguous USS list successively, determines target USS;
Described service USS and described target USS set up and play link.
Preferably, described service USS and target USS foundation broadcasting link specifically comprise:
Described service USS sends and plays the pre-established request of link to described target USS, and the pre-established request of described broadcasting link comprises destination address and the port of media;
Accept the acknowledge message of described target USS, described acknowledge message comprises source address and the port of media.
Preferably, described time shifting request comprises RANG parameter.
Preferably, described service USS also comprises: described service USS sends an acknowledgement message to described Set Top Box after accepting the acknowledge message of target USS.
The present invention also proposes a kind of service USS, comprising:
Receiver module, when live for clean culture, the time shifting request that receiver top box sends, described time shifting request comprises the media of described Set Top Box request;
Sending module, for when described service general multi-services device USS is during without the media of described Set Top Box request or service ability, sends described time shifting request to target USS, and described target USS has the media of described Set Top Box request;
Confirm module, for accepting the acknowledge message of described target USS, described acknowledge message confirms that described target USS receives after described time shifting request, sends Media Stream to destination address and port from source address and the port of media.
Preferably, service USS also comprises:
Application module, for applying for contiguous USS list to position of media service system MLSS;
Determine target USS module, for inquiring about successively the USS of described contiguous USS list, determine target USS;
Link module, for setting up and play link with described target USS.
Preferably, described link module comprises:
Pre-established unit, plays the pre-established request of link to described target USS for sending, and the pre-established request of described broadcasting link comprises media destination address and port;
Confirmation unit, for accepting the acknowledge message of described target USS, described acknowledge message comprises source address and the port of media.
Preferably, described time shifting request comprises RANG parameter.
Preferably, service USS also comprises responder module, for sending an acknowledgement message to described Set Top Box.
The method of tandem and service USS in the IPTV system that the present invention proposes, by the method for tandem, by service, USS is directly sent to target USS by the time shifting request of Set Top Box, Set Top Box and target USS is set up and play after link, need not re-start time shift operation, realize seamless time shift.
Brief description of the drawings
Fig. 1 is the schematic flow sheet that existing Set Top Box is carried out the method for time shift;
Fig. 2 is the schematic flow sheet of method one embodiment of tandem in IPTV system of the present invention;
Fig. 3 is the schematic flow sheet of the another embodiment of method of tandem in IPTV system of the present invention;
Fig. 4 is the signalling diagram of method one embodiment of tandem in IPTV system of the present invention;
Fig. 5 is the structural representation that the present invention serves USS mono-embodiment;
Fig. 6 is the structural representation that the present invention serves the another embodiment of USS.
Realization, functional characteristics and the advantage of the object of the invention, in connection with embodiment, are described further with reference to accompanying drawing.
Embodiment
The method of tandem and service USS in the IPTV system that the present invention proposes, by the method for tandem, by service, USS is directly sent to target USS by the time shifting request of Set Top Box, Set Top Box and target USS is set up and play after link, need not re-start time shift operation, realize seamless time shift.
With reference to Fig. 2, method one embodiment of tandem in IPTV system of the present invention is proposed, comprising:
Step 101, when clean culture is live, the time shifting request that service USS receiver top box sends, this time shifting request comprises the media of Set Top Box request;
Step 102, when service USS is during without the media of Set Top Box request or service ability, sends time shifting request to target USS, and target USS has the media of Set Top Box request;
Step 103, service USS accepts the acknowledge message of target USS, and this acknowledge message confirms that target USS receives after time shifting request, sends Media Stream to destination address and port from source address and the port of media.
Above-mentioned time shifting request comprises RANG parameter.
With reference to Fig. 3, another embodiment of method of tandem in IPTV system of the present invention is proposed, in the above-described embodiments, before step 102, also comprise:
Step 1011, service USS is to the contiguous USS list of position of media service system MLSS application;
Step 1012, service USS inquires about the USS in contiguous USS list successively, determines target USS;
Step 1013, service USS and target USS set up and play link.
Step 1013 specifically comprises:
Service USS sends and plays that link is pre-established asks to target USS, and the pre-established request of this broadcasting link comprises destination address and the port of media;
Accept the acknowledge message of target USS, this acknowledge message comprises source address and the port of media.
After step 103, also comprise:
Step 104, service USS sends an acknowledgement message to Set Top Box.
With reference to Fig. 4, describe the operation principle of the method for tandem in embodiment of the present invention IPTV system in detail.
When clean culture is live, the playing request that service USS receiving set up box is initiated, request enters time shift;
Service USS finds to require the media of playing not have in this locality, so initiate inquiry request to MLSS, requires it to return to contiguous USS list;
The node dependence that MLSS is good according to configured in advance, returns to a contiguous USS list to service USS;
The contiguous USS list that service USS returns according to MLSS, sends order request DESCRIBE request to successively USS in list;
When target USS is in this content of local search, the media that discovery exists Set Top Box to ask, so return to 200OK, represent successfully;
Service USS structure establishes the link request SETUP request and issues target USS, and destination address and the port of media carried in this request;
Target USS applies for resource in this locality, sends 200OK to service USS and by the destination address of media and port band;
Service USS sends to target USS by the playing request of Set Top Box after receiving replying of SETUP request;
Medium source address and the port of target USS from specifying, sends media and flows to destination address and port, and returns to 200OK to service USS and reply;
Service USS will reply and be transmitted to Set Top Box, process ends.
The method of tandem in the IPTV system that the present invention proposes, by the method for tandem, by service, USS is directly sent to target USS by the time shifting request of Set Top Box, Set Top Box and target USS is set up and play after link, need not re-start time shift operation, realize seamless time shift.
With reference to Fig. 5, propose the present invention and serve USS mono-embodiment, comprising:
Receiver module 10, when live for clean culture, the time shifting request that receiver top box sends, this time shifting request comprises the media of Set Top Box request;
Sending module 20, for when service USS is during without the media of Set Top Box request or service ability, sends time shifting request to target USS, and target USS has the media of Set Top Box request;
Confirm module 30, for accepting the acknowledge message of target USS, this acknowledge message confirms that target USS receives after time shifting request, sends Media Stream to destination address and port from source address and the port of media.
Above-mentioned time shifting request comprises RANG parameter.
Another proposition the present invention serves USS mono-embodiment, in the above-described embodiments, also comprises:
Application module 40, for applying for contiguous USS list to position of media service system MLSS;
Determine target USS module 50, for inquiring about successively the USS of contiguous USS list, determine target USS;
Link module 60, for setting up and play link with target USS.
Link module 60 comprises:
Pre-established unit 61, plays for sending that link is pre-established asks to target USS, and the pre-established request of this broadcasting link comprises media destination address and port;
Confirmation unit 62, for accepting the acknowledge message of target USS, this acknowledge message comprises source address and the port of media.
Responder module 70, for sending an acknowledgement message to Set Top Box.
With reference to Fig. 3, describe the operation principle of the service USS of above-described embodiment in detail.
When clean culture is live, the playing request of receiver module 10 receiving set up box, enters time shift;
Service USS finds to require the media of playing not have in this locality, so application module 40 is initiated inquiry request to MLSS, requires it to return to contiguous USS list;
The node dependence that MLSS is good according to configured in advance, returns to a contiguous USS list to service USS;
Determine the contiguous USS list that target USS module 50 is returned according to MLSS, send order request DESCRIBE request to successively USS in list;
When target USS is in this content of local search, the media that discovery exists Set Top Box to ask, so return to 200OK, represent successfully;
Pre-established unit 61 structures in link module 60 establish the link request SETUP request and issue target USS, and destination address and the port of media carried in this request;
Target USS applies for resource in this locality, sends 200OK to confirmation unit 62 and by the destination address of media and port band;
Sending module 20 sends to target USS by the playing request of Set Top Box after receiving replying of SETUP request;
Medium source address and the port of target USS from specifying, sends media and flows to destination address and port, and returns to 200OK to confirmation module 30 and reply;
Responder module 70 will be replied and will be transmitted to Set Top Box, process ends.
The service USS that the present invention proposes, by the method for tandem, by service, USS is directly sent to target USS by the time shifting request of Set Top Box, Set Top Box and target USS is set up and play after link, need not re-start time shift operation, has realized seamless time shift.
The foregoing is only the preferred embodiments of the present invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes specification of the present invention and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (8)
1. a method for IPTV system tandem, is characterized in that, comprises step:
When clean culture is live, the time shifting request that service general multi-services device USS receiver top box sends, described time shifting request comprises the media of described Set Top Box request;
Described service USS, to the contiguous USS list of position of media service system MLSS application, inquires about the USS in described contiguous USS list successively, determines target USS, and sets up and play link with described target USS;
When described service USS is during without the media of described Set Top Box request or service ability, send described time shifting request to target USS, described target USS has the media of described Set Top Box request;
Described service USS accepts the acknowledge message of described target USS, and described acknowledge message confirms that described target USS receives after described time shifting request, sends Media Stream to destination address and port from source address and the port of media.
2. the method for IPTV system as claimed in claim 1 tandem, is characterized in that, described service USS and target USS set up broadcasting link and specifically comprise:
Described service USS sends and plays the pre-established request of link to described target USS, and the pre-established request of described broadcasting link comprises destination address and the port of media;
Accept the acknowledge message of described target USS, described acknowledge message comprises source address and the port of media.
3. the method for IPTV system as claimed in claim 1 or 2 tandem, is characterized in that, described time shifting request comprises RANG parameter.
4. the method for IPTV system as claimed in claim 1 or 2 tandem, is characterized in that, described service USS also comprises: described service USS sends an acknowledgement message to described Set Top Box after accepting the acknowledge message of target USS.
5. a service general multi-services device USS, is characterized in that, comprising:
Receiver module, when live for clean culture, the time shifting request that receiver top box sends, described time shifting request comprises the media of described Set Top Box request;
Application module, for applying for contiguous USS list to position of media service system MLSS;
Determine target USS module, for inquiring about successively the USS of described contiguous USS list, determine target USS;
Link module, for setting up and play link with described target USS;
Sending module, for when described service USS is during without the media of described Set Top Box request or service ability, sends described time shifting request to target USS, and described target USS has the media of described Set Top Box request;
Confirm module, for accepting the acknowledge message of described target USS, described acknowledge message confirms that described target USS receives after described time shifting request, sends Media Stream to destination address and port from source address and the port of media.
6. service USS as claimed in claim 5, is characterized in that, described link module comprises:
Pre-established unit, plays the pre-established request of link to described target USS for sending, and the pre-established request of described broadcasting link comprises media destination address and port;
Confirmation unit, for accepting the acknowledge message of described target USS, described acknowledge message comprises source address and the port of media.
7. the service USS as described in claim 5 or 6, is characterized in that, described time shifting request comprises RANG parameter.
8. the service USS as described in claim 5 or 6, is characterized in that, also comprises responder module, for sending an acknowledgement message to described Set Top Box.
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| CN201010202699.1A CN101895532B (en) | 2010-06-13 | 2010-06-13 | Junction method in IPTV (Internet Protocol Television) system and service USS |
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| CN201010202699.1A CN101895532B (en) | 2010-06-13 | 2010-06-13 | Junction method in IPTV (Internet Protocol Television) system and service USS |
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| CN101895532B true CN101895532B (en) | 2014-09-10 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101056251A (en) * | 2007-05-11 | 2007-10-17 | 中兴通讯股份有限公司 | A time shift service system and method |
| CN101110947A (en) * | 2007-06-26 | 2008-01-23 | 中兴通讯股份有限公司 | Service scheduling method for interactive television system |
| CN101222617A (en) * | 2007-08-09 | 2008-07-16 | 中兴通讯股份有限公司 | Method and device for network video monitoring |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7716310B2 (en) * | 2007-12-21 | 2010-05-11 | Telefonaktiebolaget L M Ericsson (Publ) | Method and Internet Protocol Television (IPTV) content manager server for IPTV servicing |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101056251A (en) * | 2007-05-11 | 2007-10-17 | 中兴通讯股份有限公司 | A time shift service system and method |
| CN101110947A (en) * | 2007-06-26 | 2008-01-23 | 中兴通讯股份有限公司 | Service scheduling method for interactive television system |
| CN101222617A (en) * | 2007-08-09 | 2008-07-16 | 中兴通讯股份有限公司 | Method and device for network video monitoring |
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