CN102137293A - Resource allocation method, user business terminal and head end system of streaming media service - Google Patents

Resource allocation method, user business terminal and head end system of streaming media service Download PDF

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Publication number
CN102137293A
CN102137293A CN2010106197918A CN201010619791A CN102137293A CN 102137293 A CN102137293 A CN 102137293A CN 2010106197918 A CN2010106197918 A CN 2010106197918A CN 201010619791 A CN201010619791 A CN 201010619791A CN 102137293 A CN102137293 A CN 102137293A
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service
streaming media
media service
user
terminal
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CN2010106197918A
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CN102137293B (en
Inventor
蒋勇
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to CN201010619791.8A priority Critical patent/CN102137293B/en
Publication of CN102137293A publication Critical patent/CN102137293A/en
Priority to PCT/CN2011/079410 priority patent/WO2012088922A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
    • H04N21/44213—Monitoring of end-user related data
    • H04N21/44218—Detecting physical presence or behaviour of the user, e.g. using sensors to detect if the user is leaving the room or changes his face expression during a TV program
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
    • H04N21/44213—Monitoring of end-user related data
    • H04N21/44222—Analytics of user selections, e.g. selection of programs or purchase activity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
    • H04N21/2387—Stream processing in response to a playback request from an end-user, e.g. for trick-play
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
    • H04N21/643—Communication protocols
    • H04N21/64322—IP
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/65—Transmission of management data between client and server
    • H04N21/658—Transmission by the client directed to the server
    • H04N21/6587—Control parameters, e.g. trick play commands, viewpoint selection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/47—End-user applications
    • H04N21/472—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content
    • H04N21/47202—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content for requesting content on demand, e.g. video on demand

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  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Social Psychology (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Databases & Information Systems (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

The embodiment of the invention discloses a resource allocation method, a user business terminal and a head end system of streaming media service. The method comprising the steps of judging whether current time surpasses out-of-service time of the streaming media service when the streaming media service is in a service state; setting the service state of the streaming media service to be failure if the current time surpasses the out-of-service time of the streaming media service, and recording the information of suspension of the streaming media service; and sending a requirement of stopping broadcasting to the head end system so as to request the head end system to stop allocating resources to the streaming media service. According to the embodiment of the invention, when a user switches off a playing terminal, or departs for a long time without watching the contents of a streaming medium, the streaming media service is judged to be failure, so that the head end system stops broadcasting the streaming medium to the user business terminal so as to save the occupancy of the playing terminal on system resources.

Description

Resource allocation method of streaming media service, user service terminal and head end system
Technical Field
The present invention relates to the field of streaming media communication technologies, and in particular, to a resource allocation method for streaming media service, a user service terminal, and a head-end system.
Background
With the enhancement of the demand of people for audio-visual entertainment and the development of streaming media related services, a plurality of streaming media service forms appear aiming at different types of network coverage in different fields, including: IPTV (internet protocol Television), DTV (Digital Television), MTV (Mobile Television), and the like.
The streaming media service system comprises a head-end system, a user service terminal (such as a set-top box and a PC host) and a playing terminal (such as a television and a display). The head end system mainly comprises a streaming media server and network equipment, wherein the streaming media server is used for providing the broadcasting of streaming media, and the network equipment is used for providing the transmission of the streaming media; the user service terminal receives the stream media and decodes the stream media to the playing terminal; and the playing terminal plays the streaming media content. In the prior art, in each streaming media service process, resource occupation is formed on a head-end system and a user service terminal, and the resources include physical resources such as a CPU, a memory, a hard disk, a port, a network bandwidth, a frequency point, an IP address, and the like, and also include logical resources such as a service identifier and a packet identifier.
The inventor finds in the research process of the prior art that, when implementing streaming media service in the prior art, a user may directly close a playing terminal after viewing streaming media content, or leave for a long time without viewing the streaming media content, and at this time, a user service terminal is not closed, although the user has finished viewing the streaming media content, a streaming media server still broadcasts a media stream to the user service terminal, a network device also normally transmits the media stream to the user service terminal, and the user service terminal also normally decodes and outputs the media stream, and only the playing terminal does not play the decoded streaming media content any more. Therefore, after the user finishes watching the streaming media content, the streaming media server, the network device, the user service terminal, etc. still consume a large amount of processing resources for the playing terminal.
Disclosure of Invention
The invention aims to provide a resource allocation method of streaming media service, a user service terminal and a head end system, so as to solve the problem that a large amount of streaming media processing resources are still consumed when a user finishes watching streaming media in the prior art.
In order to solve the technical problems, the invention provides the following technical scheme:
a resource allocation method for a streaming media service comprises the following steps:
when the streaming media service is in an effective state, judging whether the current time exceeds the failure time of the streaming media service;
if the current time exceeds the failure time of the streaming media service, setting the state of the streaming media service as a failure state, and recording the interruption information of the streaming media service;
sending a broadcast stop request to a head-end system to request the head-end system to stop allocating resources for the streaming media service.
A resource allocation method for a streaming media service comprises the following steps:
receiving a broadcast stopping request sent by a user service terminal, wherein the broadcast stopping request is a request sent by a streaming media service terminal after judging that the current time exceeds the failure time of the streaming media service when the streaming media service is in an effective state;
recording the interruption information of the streaming media service, and stopping allocating resources for the streaming media service.
A user service terminal, comprising: the system comprises an input/output interface module, a user operation monitoring module, a service effectiveness identification module and a service breakpoint processing module; wherein,
the input/output interface module is used for receiving an operation control command sent by a user terminal and reporting the operation control command to the user operation monitoring module;
the user operation monitoring module is used for monitoring an operation control command sent by the user terminal and reporting monitoring information to the service validity identification module;
the service effectiveness identification module is used for requesting the streaming media terminal to play to the service breakpoint processing module or requesting to restore the streaming media playing from the breakpoint;
and the service breakpoint processing module is used for sending a service interruption request of the streaming media or a service recovery request of the streaming media to the head-end system.
A headend system, comprising: the system comprises a service request access module, a service control module, a network resource management module, a service resource management module and a streaming media service module; wherein,
the service request access module is used for forwarding a service interruption request of the streaming media or a service recovery request of the streaming media sent by the user service terminal to the service control module;
the service control module is used for sending a control command for releasing or distributing the network resources to the network resource management module, sending a control command for releasing or distributing the service resources to the service resource management module, and sending a control command for interrupting the streaming media playing or recovering the streaming media playing from a specified time point to the streaming media service module;
and the streaming media service module is used for playing the media stream to the user service terminal.
A user service terminal, comprising:
the judging unit is used for judging whether the current time exceeds the failure time of the streaming media service when the streaming media service is in an effective state;
the setting unit is used for setting the state of the streaming media service to be a failure state when the judging unit judges that the current time exceeds the failure time of the streaming media service;
a recording unit, configured to record interruption information of the streaming media service;
a sending unit, configured to send a broadcast stop request to a head-end system, so that the head-end system stops allocating resources for the streaming media service.
A headend system, comprising:
a receiving unit, configured to receive a broadcast stop request sent by a user service terminal, where the broadcast stop request is a request sent by a streaming media service terminal after determining that current time exceeds failure time of the streaming media service when the streaming media service is in an effective state;
a recording unit, configured to record interruption information of the streaming media service;
a configuration unit, configured to stop allocating resources for the streaming media service.
As can be seen from the above technical solutions provided in the embodiments of the present invention, when the user service terminal in the embodiments of the present invention determines that the current time exceeds the expiration time of the streaming media service when the streaming media service is in an effective state, the state of the streaming media service is set to an expiration state, and the interruption information of the streaming media service is recorded, and a request for stopping broadcasting is sent to the head end system, so that the head end system stops allocating resources for the streaming media service. By applying the embodiment of the invention, when the user closes the playing terminal or leaves for a long time without watching the streaming media content, the streaming media service is judged to be invalid, so that the head end system stops playing the streaming media to the user service terminal, and the occupation of the playing terminal on system resources is saved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1A is a flowchart of a resource allocation method for streaming media services according to a first embodiment of the present invention;
FIG. 1B is a flowchart illustrating a resource allocation method for streaming media services according to a second embodiment of the present invention;
fig. 2 is a schematic diagram of an interaction architecture of a head-end system and a user service terminal to which an embodiment of the present invention is applied;
FIG. 3 is a flowchart illustrating a resource allocation method for streaming media services according to a third embodiment of the present invention;
FIG. 4 is a flowchart of allocating resources and starting a streaming media service in the third embodiment of FIG. 3;
fig. 5 is a flowchart of interrupting streaming media play and releasing resources in the third embodiment of fig. 3;
fig. 6 is a flowchart of determining that a user recovers the streaming media service and performs resource allocation in the third embodiment of fig. 3;
FIG. 7 is a flowchart of allocating resources and resuming streaming media services in FIG. 6;
FIG. 8 is a flowchart illustrating a resource allocation method for streaming media services according to a fourth embodiment of the present invention;
fig. 9 is a flowchart of recording a service interruption point, interrupting streaming media broadcasting, and releasing resources in the fourth embodiment of fig. 8;
fig. 10 is a flowchart illustrating a process of determining that a user resumes streaming media service and allocating resources in the fourth embodiment of fig. 8;
FIG. 11 is a flowchart of allocating resources and resuming streaming media services in FIG. 10;
FIG. 12 is a block diagram of a resource allocation system for streaming media services according to an embodiment of the present invention;
fig. 13 is a block diagram of a user service terminal according to a first embodiment of the present invention;
fig. 14 is a block diagram of a user service terminal according to a second embodiment of the present invention;
fig. 15 is a block diagram of a headend system according to a first embodiment of the invention;
fig. 16 is a block diagram of a headend system according to a second embodiment of the invention.
Detailed Description
The embodiment of the invention provides a resource allocation method of streaming media service, a user service terminal and a head-end system.
So that those skilled in the art can better understand the concept of the present invention and can better understand the objects, features, and advantages of the present invention, the present invention will be described in detail with reference to the accompanying drawings and the detailed description.
Referring to fig. 1A, a flowchart of a first embodiment of a resource allocation method for streaming media service according to the present invention is shown, where the embodiment is described from a user service terminal side:
step 101: when the streaming media service is in an effective state, the user service terminal judges whether the current time exceeds the failure time of the streaming media service.
In the embodiment of the invention, when a user service terminal receives a service request of the streaming media service, the state of the streaming media service is set to be an effective state, and the service failure time of a preset streaming media service effectiveness processing timer is reset, wherein the service failure time is the sum of the current time and the preset service failure duration.
Specifically, when the streaming media service validity processing timer reaches the running period, the current time is compared with the service expiration time of the streaming media service validity processing timer, when the current time is less than the service expiration time, it is determined that the streaming media service is valid, and when the current time is greater than the service expiration time, it is determined that the streaming media service is invalid.
Step 102: and if the current time exceeds the failure time of the streaming media service, setting the state of the streaming media service as a failure state.
Step 103: recording interruption information of the streaming media service.
The streaming media service comprises an on-demand service and a live broadcast service. For the on-demand service, recording the program number of the on-demand streaming media program and the current playing time point; for live service, the channel number of the live streaming program is recorded.
Step 104: and sending a broadcast stop request to the head-end system to request the head-end system to stop allocating resources for the streaming media service.
The head-end system acquires the service session of the streaming media service, releases the network resources, the service resources and the broadcasting resources allocated to the streaming media service, and clears the service session of the streaming media service.
Further, when the streaming media service enters the valid state again from the invalid state, the user service terminal acquires interruption information of the media service, sends a service recovery request to the head-end system according to the interruption information, and requests the head-end system to start sending the streaming media to the user service terminal from the breakpoint of the streaming media service.
Referring to fig. 1B, a flowchart of a resource allocation method for streaming media service according to a second embodiment of the present invention is shown, where the embodiment is described from a head-end system side:
step 111: the head end system receives a broadcast stopping request sent by a user service terminal, wherein the broadcast stopping request is a request sent by a streaming media service terminal after judging that the current time exceeds the failure time of the streaming media service when the streaming media service is in an effective state.
Step 112: recording interruption information of the streaming media service.
Step 113: stopping the allocation of resources for the streaming media service.
Specifically, the head-end system acquires a service session of the streaming media service, releases network resources, service resources, and broadcast resources allocated to the streaming media service, and clears the service session of the streaming media service.
Further, when the head-end system receives a service restoration request sent by the user service terminal, the service restoration request is a request sent when the user service terminal judges that the streaming media service enters the valid state from the invalid state, the head-end system acquires the interruption information, and starts to send the streaming media to the user service terminal from the breakpoint of the streaming media service according to the interruption information.
Referring to fig. 2, a schematic view of an interactive architecture of a head-end system and a user service terminal applied in an embodiment of resource allocation for streaming media services in the present invention is shown:
the user service terminal 210 may be specifically a set-top box, and includes: an input/output interface module 211, a user operation monitoring module 212, a service validity identification module 213 and a service breakpoint processing module 214; headend system 220 may be embodied as a VOD (Video On Demand) system, including: a service request access module 221, a service control module 222, a network resource management module 223, a service resource management module 224 and a streaming media service module 225.
The input/output interface module 211 is configured to receive an operation control command sent by a user terminal, and report the operation control command to the user operation monitoring module 212; the user operation monitoring module 212 is configured to monitor an operation control command of the user terminal to the set-top box, and report monitoring information to the service validity identification module 213; the service validity identification module 213 is used to request the service breakpoint processing module 214 to play the streaming media terminal, or to request to resume the streaming media playing from the breakpoint; the service breakpoint processing module 214 is configured to send a service interruption request of the streaming media or a service restoration request of the streaming media to the service request access module; the service request access module 221 is configured to forward a service interruption request of the streaming media or a service recovery request of the streaming media to the service control module 222; the service control module 222 is configured to send a control command for releasing or allocating a network resource to the network resource management module 223, send a control command for releasing or allocating a service resource to the service resource management module 224, and send a control command for interrupting streaming media playing or resuming streaming media playing from a specified time point to the streaming media service module 225; the streaming media service module 225 is used for playing the media stream to the user service terminal 210.
Under the condition of not changing the existing architecture, the embodiment of the invention judges the effectiveness of the streaming media service by expanding the functions of the user service terminal and adopting a method for monitoring the terminal operation behavior of the user, so that when the user only closes a playing terminal (such as a television and a display) but does not close the service terminal (such as a set top box, a PC host machine or a service client) of the user or does not watch the streaming media content for a long time, the embodiment of the invention can judge that the streaming media service is invalid and timely release the resources allocated to the streaming media service, thereby avoiding the long-term unreasonable occupation of the resources.
In order to further improve the user experience, when determining that the resources need to be released and the playing of the streaming media is terminated, the user service terminal adds the processing of recording the information of the current streaming media playing point (for a live channel, for an on-demand recorded program number and a time point), so that when the user turns on the playing terminal (such as a television and a display) again to continuously watch the streaming media content, or the user returns to the seat to continuously watch the streaming media content, according to the monitoring condition of the user operation of the service terminal (such as the operation of a set-top box remote controller, the operation of a touch screen and the like), the streaming media service is judged to be effective again, the resources are redistributed to the streaming media service at the moment, if the playing before the interruption is a live channel, the live channel is continuously played, if the playing before the interruption is an on-demand program, the on-demand program is continuously played from the position, so that the user can continue to watch the last viewed channel or on-demand program.
Referring to fig. 3, a flowchart of a third embodiment of a resource allocation method for a streaming media service according to the present invention is shown, and this embodiment describes, in conjunction with fig. 2, a process of determining invalidity and releasing resources for the streaming media service, where it is assumed that a user service terminal is a set-top box terminal and a head-end system is a VOD system:
step 301: the user operates the set-top box remote controller to drive the input/output interface module in the set-top box terminal to switch channels or request programs.
Step 302: the input/output interface module reports the playing operation of the user through the set-top box remote controller to the user operation monitoring module.
Step 303: and when the user operation monitoring module judges that the operation is the playing operation, the user operation monitoring module requests the service effectiveness identification module to start the streaming media service.
Step 304: the service validity identification module sets the service state of the current streaming media as a valid state, sets service failure time and starts a service validity processing timer.
The service failure time is the time obtained by adding the service failure time length to the current system time, wherein the service failure time length is the time length (unit second) configured by the set top box configuration function by the user, and can also be set in the set top box through a set top box configuration parameter writing interface in the EPG page of the VOD system, for example, the service failure time length can be default to 10800 seconds (3 hours); the period of the service validity processing timer is the duration configured by the user through the set-top box system configuration function, and the period can be 600 seconds (10 minutes) by default.
Step 305: the input/output interface module sends a broadcast request to the VOD system to request the VOD system to broadcast the media stream of the channel or the media stream of the on-demand program.
Step 306: the VOD system distributes resources, receives the media stream of the channel or acquires the media file of the on-demand program, and then broadcasts the media stream to the input and output interface module.
The processing flow of the VOD system allocating resources and starting services will be described in detail in the embodiment shown in fig. 4.
Step 307: the input/output interface module receives the media stream sent by the VOD system and outputs the media stream to the television for the user to watch the requested channel or the requested program.
Step 3081: the user operates the set-top box remote controller to carry out operations such as fast forward, fast backward, pause, recovery and the like, and the input and output interface module reports the key information of the set-top box remote controller operated by the user to the user operation monitoring module.
Step 3082: and after receiving the reported remote controller operation, the user operation monitoring module sends a request for maintaining service validity to the service validity identification module.
Step 3083: after receiving the request for maintaining the service validity, the service validity identification module resets the service expiration time, and the calculation rule of the service expiration time is consistent with the description in step 304.
Step 3084: the input and output interface module judges whether the operation performed by the user is a broadcast control operation, wherein the broadcast control operation comprises fast forward, fast backward, pause, recovery, stop, one-key-to-head and the like, and if the operation is the broadcast control operation, a message requesting program broadcast control is sent to the VOD system.
Step 3085: and the VOD system performs program broadcasting control processing according to the request message.
Step 3086: when the user directly turns off the television but does not turn off the set-top box terminal, or the user leaves the seat for a long time and does not watch the program, and when the service failure time is reached, the service effectiveness processing timer triggers the processing of the service failure.
Step 3091: when the service validity processing timer in the service validity identification module reaches the operation period, the validity of the streaming media service is judged, the judgment rule is that the judgment logic and result processing comprises the following steps according to the service state and the relation between the current time and the service failure time: if the service state is invalid, the processing is not carried out, and the timing processing logic is ended; if the service state is valid and the current time is less than the service failure time, the service continues to be valid, and the timing processing logic is ended; if the service status is valid and the current time is greater than or equal to the service expiration time, the service expiration occurs, and step 3092 is triggered.
Step 3092: and setting the service state as failure, and requesting the playing program to be interrupted from the service breakpoint processing module by the service validity processing timer.
Step 3093: the service breakpoint processing module records service breakpoint information, records a channel number for a live channel, records a program number and a time point for on-demand, and notifies the input/output interface module to stop playing programs after completing the recording of the service breakpoint.
Step 3094: the input/output interface module transmits an interrupt program play request to the VOD system.
Step 3095: the VOD system interrupts the program being played and releases the resources allocated for the program upon request.
The flow of the VOD system interrupting the broadcasting of the program stream and releasing the resources is described in the embodiment shown in the subsequent fig. 5.
Step 310: the set-top box makes the program picture still in the last frame picture and releases the playing resources.
Referring to fig. 4, the detailed process of allocating resources for the VOD system and starting streaming media service in the third embodiment:
step 401: when receiving the channel and program playing request of the set-top box terminal, the service request access module of the VOD system judges that the request is the request for starting the streaming media service, and requests the service control module to start the streaming media service.
Step 402: the service control module creates a service session.
Step 403: the service control module requests the network resource management module to allocate network resources.
Step 404: the network resource management module allocates network resources and returns the network resources to the service control module.
The network resource allocation process is to allocate a corresponding network bandwidth according to a service requested by a user, and when the network resource allocation process is applied to a DTV system, the network resource allocation process further includes allocating IP addresses, streaming ports, frequency points issued by a program stream, service identifiers, symbol rates, Modulation values, and the like of IP QAM (IP orthogonal amplitude Modulation) and QAM (Quadrature amplitude Modulation) required for broadcasting the program stream.
Step 405: the service control module records the network resource parameters in the service session.
Step 406: the service control module requests the service resource management module to allocate service resources.
Step 407: the service resource management module allocates service resources and returns the service resources to the service control module, and the service resource allocation comprises allocating an RTP head identifier, requesting CA/DRM to allocate scrambling resources, acquiring a descrambling key, allocating a streaming media server providing the media streaming service this time, allocating streaming media service License, and allocating an IP and a port.
Step 408: the service control module records service resource parameters in the service session.
Step 409: the service control module requests the streaming media service module to broadcast the media stream.
Step 410: the streaming media service module allocates the broadcasting resources, receives the channel media stream or reads the media file. The broadcast resource allocation comprises allocation of broadcast threads, allocation of broadcast buffer space, allocation of port outflow bandwidth and the like.
Step 411: the streaming media service module broadcasts the media stream to the network equipment by using the distributed broadcasting resources and indicates the user service terminal to be sent, and the network equipment broadcasts the media stream to the corresponding set top box.
Referring to fig. 5, a detailed process for interrupting the streaming media play and releasing the resources in the VOD system according to the third embodiment is shown:
step 501: after receiving a request for stopping the broadcasting of the channel and the program stream sent by the set top box terminal, a service request access module of the VOD system judges that the current streaming media service is interrupted, and then requests the service control module to interrupt the service.
Step 502: the service control module acquires the session of the streaming media service.
Step 503: the service control module requests the off-air media stream from the streaming media service module.
Step 504: the media service module releases the broadcast resources, and the broadcast resource release processing comprises releasing the broadcast thread, releasing the broadcast buffer space and releasing the port outflow bandwidth.
Step 505: the streaming media service module stops broadcasting the media stream.
Step 506: the service control module requests the service resource management module to release the service resource.
Step 507: the service resource management module releases the service resource and returns the result to the service control module, and the service resource release processing comprises the steps of releasing the RTP head identifier, requesting CA/DRM to release scrambling resources, releasing streaming media service License, releasing streaming IP and port and the like.
Step 508: the service control module requests the network resource management module to release the network resource.
Step 509: the network resource management module releases network resources and returns the result to the service control module, the network resource release processing comprises releasing the network bandwidth allocated to the user service, and for the DTV system, the IP address, the inflow port, the frequency point issued by the program stream, the service identifier, the symbol rate, the modulation value and the like of the program stream are released to the IPQAM and QAM allocated to the streaming media service.
Step 510: the service control module clears the service session.
Referring to fig. 6, for the process of subsequently determining that the user recovers the streaming media service and performs resource allocation in the third embodiment:
step 601: the user turns on the television again or returns to the seat to continue watching the streaming media program.
Step 602: the user operates any key of the set-top box remote controller.
Step 603: the input/output interface module reports the key operation of the remote controller by the user to the user operation monitoring module.
Step 604: the user operation monitoring module sends a request for resetting the service validity to the service validity identification module.
Step 605: and after receiving the request for resetting the service validity, the service validity identification module sets the service state to be the valid state and resets the service failure time.
Step 606: and the service effectiveness identification module requests the service breakpoint processing module to start playing from the breakpoint of the streaming media.
Step 607: and the service breakpoint processing module acquires the service breakpoint information and generates a playing URL of the streaming media according to the service breakpoint information.
For the live broadcast channel, acquiring a channel playing URL according to the channel number; and for the on-demand program, acquiring an on-demand playing URL according to the recorded program number, and setting a playing initial position according to the interruption time point.
Step 608: and the service breakpoint processing module informs the set top box of starting channel playing or playing of the on-demand program.
Step 609: the input output interface module requests the VOD system for the play of the channel and the on-demand program (from the breakpoint for the on-demand program).
Step 610: the VOD system distributes resources, receives channel media streams or acquires media files of on-demand programs, then broadcasts the media streams to the input and output interface module, and the on-demand programs need to be broadcast from the requested specified time points.
The flow of the process of the VOD system allocating resources and resuming services will be described in detail in the embodiment shown in fig. 7.
Referring to fig. 7, a detailed process of allocating resources and resuming streaming media services for the VOD system of fig. 6:
step 701: after receiving the request for restoring the channel and playing the program sent by the set-top box terminal, the service request access module of the VOD system judges that the request is the request for restoring the streaming media service, and requests the service control module to restore the streaming media service.
Step 702: the service control module recovers the streaming media service session, and needs to determine the position where the media stream starts to be played according to the request message parameters.
Step 703 to step 708: the steps are the same as the steps 403 to 408 in fig. 4, and are not described herein again.
Step 709: the service control module requests the streaming media service module to resume the broadcast media stream from the specified point in time.
Step 710: the streaming media service module allocates broadcasting resources, receives channel media streams or reads media files of on-demand programs.
For a resume play request of an on-demand program, the media stream is read from a specified point in time. The broadcast resource allocation comprises allocation of broadcast threads, allocation of broadcast buffer space, allocation of port outflow bandwidth and the like.
Step 711: the streaming media service module broadcasts the media stream which starts to be played from the appointed time point to the network equipment by utilizing the distributed broadcasting resources, and indicates the user service terminal to be sent by the media stream, and the network equipment broadcasts the media stream to the corresponding set top box.
Referring to fig. 8, a flowchart of a fourth embodiment of a resource allocation method for a streaming service according to the present invention is shown, and this embodiment describes a process of determining invalidity and releasing resources of the streaming service in conjunction with fig. 2, wherein it is assumed that a user service terminal is a set-top box terminal and a head-end system is a VOD system, and this embodiment is different from the third embodiment shown in fig. 3 in that this embodiment completes recording of service breakpoint information when service is interrupted and sets playing from a breakpoint when service is resumed in a service control module of the VOD system:
steps 801 to 8092 are the same as steps 301 to 3092 shown in fig. 3, and are not described herein again.
Step 8093: the input output interface module sends a request for interrupting the playing of the program to the VOD system.
Step 8094: the VOD system stops the broadcasting of the program stream according to the request of interrupting the broadcasting of the program, records the interruption point information of the streaming media service, and releases the resources configured for the streaming media.
Wherein, for the live broadcast channel, the channel number is recorded; for on-demand programs, the program number and the point in time are recorded. The VOD system allocates resources and starts streaming media services as described in detail in the embodiment flow of the subsequent fig. 9.
Step 8095: the input/output interface module makes the program picture still in the last frame picture and releases the playing resource.
Referring to fig. 9, the detailed procedure of recording service interruption points, interrupting the streaming media distribution and releasing resources for the VOD system in the fourth embodiment:
steps 901 to 905 are the same as steps 501 to 505 shown in fig. 5, and are not described herein again.
Step 906: the service control module records breakpoint information of the currently interrupted program and saves the breakpoint information into the service session.
The breakpoint information of the program records the channel number for the live channel, and records the program number and the time point for the on-demand program.
Steps 907 to 911 are the same as steps 506 to 510 shown in fig. 4, and are not described herein again.
Referring to fig. 10, for the process of subsequently determining that the user resumes the streaming media service and performs resource allocation in the fourth embodiment:
steps 1001 to 1006 are identical to steps 601 to 606 shown in fig. 6, and are not described herein again.
Step 1007: and the service breakpoint processing module informs the input/output interface module to resume playing if the program state is judged to be interrupted.
Step 1008: the input output interface module requests the VOD system to resume the channel and play of the on-demand program.
Step 1009: the VOD system acquires service breakpoint information from the session, generates a play URL according to the service breakpoint information, distributes resources, receives a channel media stream or acquires a program-on-demand media file, and then broadcasts the channel media stream to the set-top box, and the program-on-demand needs to be broadcast from a requested specified time point.
The flow of the VOD system allocating resources and resuming streaming media services is described in detail in the flow of the embodiment of fig. 11 below.
Step 1010: the user watches or listens to the program and can carry out operations such as broadcasting control and the like.
Referring to fig. 11, a flow of allocating resources and resuming streaming media services for the VOD system of fig. 10:
step 1101: the service request access module of the VOD system receives a channel recovery and program playing request sent by the set-top box terminal, judges that the request is a service recovery request, and requests the service control module for service recovery.
Step 1102: the service control module acquires the service breakpoint message of the user terminal and then resumes the service session.
Steps 1103 to 1108 are identical to steps 703 to 708 shown in fig. 7, and are not described herein again.
Step 1109: the service control module generates a playing URL according to the service breakpoint information, and acquires a channel playing URL according to the channel number for the live channel; and for the on-demand, acquiring an on-demand playing URL according to the recorded program number, and setting a playing starting position according to the interruption time point.
Steps 1110 to 1112 are the same as steps 709 to 711 in fig. 7, and are not described herein again.
Corresponding to the embodiment of the resource allocation method of the streaming media service, the invention also provides embodiments of a resource allocation system, a user service terminal and a head-end system of the streaming media service.
Referring to fig. 12, a block diagram of an embodiment of a resource allocation system for streaming media service according to the present invention is shown:
the system comprises: a subscriber service terminal 1210 and a head-end system 1220.
The user service terminal 1210 is configured to, when a streaming media service is in an effective state, determine whether current time exceeds failure time of the streaming media service, set the state of the streaming media service to be a failure state if the current time exceeds the failure time of the streaming media service, record interruption information of the streaming media service, and send a request to stop broadcasting to the head-end system 1220;
the head-end system 1220 is configured to stop allocating resources to the streaming media service after receiving the request for stopping broadcasting.
Further, the user service terminal 1210 is further configured to, when the streaming media service enters an active state from the inactive state, obtain interruption information of the media service, and send a service recovery request to the head-end system 1220 according to the interruption information;
the head-end system 1220 is further configured to send streaming media to the user service terminal 1210 from a breakpoint of the streaming media service according to the interruption information.
Referring to fig. 13, a block diagram of a user service terminal according to a first embodiment of the present invention is shown:
the user service terminal includes: a judging unit 1310, a setting unit 1320, a recording unit 1330, and a transmitting unit 1340.
The determining unit 1310 is configured to determine whether the current time exceeds the expiration time of the streaming media service when the streaming media service is in an active state;
a setting unit 1320, configured to set the state of the streaming media service to a failure state when the determining unit determines that the current time exceeds the failure time of the streaming media service;
a recording unit 1330 for recording interruption information of the streaming media service;
the sending unit 1340 is configured to send a request to stop broadcasting to a head-end system, so that the head-end system stops allocating resources for the streaming media service.
Referring to fig. 14, a block diagram of a user service terminal according to a second embodiment of the present invention is shown:
the user service terminal includes: a setting unit 1410, a resetting unit 1420, a judging unit 1430, a recording unit 1440, a transmitting unit 1450, and an acquiring unit 1460.
The setting unit 1410 is further configured to set the state of the streaming media service to be a valid state when a service request of the streaming media service is received;
a resetting unit 1420, configured to reset a service failure time of a preset streaming media service validity handling timer, where the service failure time is a sum of a current time and a preset service failure duration;
a determining unit 1430, configured to determine whether the current time exceeds the expiration time of the streaming media service when the streaming media service is in an active state;
the setting unit 1410 is further configured to set the state of the streaming media service to be a failure state when the determining unit determines that the current time exceeds the failure time of the streaming media service;
a recording unit 1440 for recording interruption information of the streaming media service;
a sending unit 1450, configured to send a broadcast stop request to a head-end system, so that the head-end system stops allocating resources for the streaming media service;
an obtaining unit 1460, configured to obtain interruption information of the media service when the streaming media service enters a valid state from the disabled state;
the sending unit 1450 is further configured to send a service restoration request to the head-end system according to the interruption information, and request the head-end system to send streaming media to the user service terminal from the breakpoint of the streaming media service.
Specifically, the judging unit may include (not shown in fig. 14): the time comparison unit is used for comparing the current time with the service failure time of the streaming media service validity processing timer when the streaming media service validity processing timer reaches the running period; and the result determining unit is used for determining that the streaming media service is valid when the current time is less than the service expiration time, and determining that the streaming media service is invalid when the current time is greater than the service expiration time.
Referring to fig. 15, there is a block diagram of a headend system according to a first embodiment of the present invention:
the head end system includes: a receiving unit 1510, a recording unit 1520, and a configuration unit 1530.
The receiving unit 1510 is configured to receive a broadcast stop request sent by a user service terminal, where the broadcast stop request is a request sent by a streaming media service terminal after determining that current time exceeds expiration time of the streaming media service when the streaming media service is in an effective state;
a recording unit 1520, configured to record interruption information of the streaming media service;
a configuring unit 1530, configured to stop allocating resources for the streaming media service.
Referring to fig. 16, a block diagram of a headend system according to a second embodiment of the present invention:
the head end system includes: a receiving unit 1610, a recording unit 1620, a configuring unit 1630, an obtaining unit 1640, and a transmitting unit 1650.
A receiving unit 1610, configured to receive a broadcast stop request sent by a user service terminal, where the broadcast stop request is a request sent by a streaming media service terminal after determining that current time exceeds expiration time of the streaming media service when the streaming media service is in an effective state;
a recording unit 1620, configured to record interruption information of the streaming media service;
a configuring unit 1630, configured to stop allocating resources for the streaming media service;
a receiving unit 1610, further configured to receive a service recovery request sent by the user service terminal, where the service recovery request is a request sent by the user service terminal when determining that the streaming media service enters an effective state from the failed state;
an acquisition unit 1640 configured to acquire the interruption information;
a sending unit 1650, configured to send streaming media to the user service terminal from the breakpoint of the streaming media service according to the interruption information.
In particular, the configuration unit may include (not shown in fig. 16): a session obtaining unit, configured to obtain a service session of the streaming media service; a resource releasing unit, configured to release network resources, service resources, and broadcast resources allocated to the streaming media service; and the session clearing unit is used for clearing the service session of the streaming media service.
As can be seen from the above description of the embodiments, in the embodiment of the present invention, when the user service terminal determines that the current time exceeds the failure time of the streaming media service when the streaming media service is in the valid state, the state of the streaming media service is set as the failure state, and the interruption information of the streaming media service is recorded, and a broadcast stop request is sent to the head end system, so that the head end system stops allocating resources for the streaming media service. By applying the embodiment of the invention, when the user closes the playing terminal or leaves for a long time without watching the streaming media content, the streaming media service is judged to be invalid, so that the head end system stops playing the streaming media to the user service terminal, and the occupation of the playing terminal on system resources is saved.
Those skilled in the art will readily appreciate that the present invention may be implemented in software, coupled with a general purpose hardware platform as required. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which may be stored in a storage medium, such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method according to the embodiments or some parts of the embodiments.
The above-described embodiments of the present invention do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (16)

1. A resource allocation method for a streaming media service is characterized by comprising the following steps:
when the streaming media service is in an effective state, judging whether the current time exceeds the failure time of the streaming media service;
if the current time exceeds the failure time of the streaming media service, setting the state of the streaming media service as a failure state, and recording the interruption information of the streaming media service;
sending a broadcast stop request to a head-end system to request the head-end system to stop allocating resources for the streaming media service.
2. The method of claim 1, further comprising:
when a service request of a streaming media service is received, setting the state of the streaming media service as an effective state;
and resetting the service failure time of the preset streaming media service validity processing timer, wherein the service failure time is the sum of the current time and the preset service failure duration.
3. The method of claim 2, wherein the determining whether the current time exceeds the expiration time of the streaming media service comprises:
when the streaming media service validity processing timer reaches a running period, comparing the current time with the service failure time of the streaming media service validity processing timer;
and when the current time is less than the service failure time, determining that the streaming media service is effective, and when the current time is greater than the service failure time, determining that the streaming media service is failed.
4. The method of claim 1, further comprising:
when the streaming media service enters an effective state from the failure state, acquiring interruption information of the media service;
and sending a service restoration request to the head-end system according to the interruption information, and requesting the head-end system to send streaming media to the user service terminal from a breakpoint of the streaming media service.
5. A resource allocation method for a streaming media service is characterized by comprising the following steps:
receiving a broadcast stopping request sent by a user service terminal, wherein the broadcast stopping request is a request sent by a streaming media service terminal after judging that the current time exceeds the failure time of the streaming media service when the streaming media service is in an effective state;
recording the interruption information of the streaming media service, and stopping allocating resources for the streaming media service.
6. The method of claim 5, wherein the stopping the allocation of resources for the streaming media service comprises:
acquiring a service session of the streaming media service;
releasing network resources, service resources and broadcasting resources allocated to the streaming media service;
and clearing the service session of the streaming media service.
7. The method of claim 5, further comprising:
receiving a service recovery request sent by the user service terminal, wherein the service recovery request is a request sent by the user service terminal when the streaming media service is judged to enter an effective state from the failure state;
and acquiring the interruption information, and starting to send the streaming media to the user service terminal from the breakpoint of the streaming media service according to the interruption information.
8. A user service terminal, comprising: the system comprises an input/output interface module, a user operation monitoring module, a service effectiveness identification module and a service breakpoint processing module; wherein,
the input/output interface module is used for receiving an operation control command sent by a user terminal and reporting the operation control command to the user operation monitoring module;
the user operation monitoring module is used for monitoring an operation control command sent by the user terminal and reporting monitoring information to the service validity identification module;
the service effectiveness identification module is used for requesting the streaming media terminal to play to the service breakpoint processing module or requesting to restore the streaming media playing from the breakpoint;
and the service breakpoint processing module is used for sending a service interruption request of the streaming media or a service recovery request of the streaming media to the head-end system.
9. A headend system, comprising: the system comprises a service request access module, a service control module, a network resource management module, a service resource management module and a streaming media service module; wherein,
the service request access module is used for forwarding a service interruption request of the streaming media or a service recovery request of the streaming media sent by the user service terminal to the service control module;
the service control module is used for sending a control command for releasing or distributing the network resources to the network resource management module, sending a control command for releasing or distributing the service resources to the service resource management module, and sending a control command for interrupting the streaming media playing or recovering the streaming media playing from a specified time point to the streaming media service module;
and the streaming media service module is used for playing the media stream to the user service terminal.
10. A user service terminal, comprising:
the judging unit is used for judging whether the current time exceeds the failure time of the streaming media service when the streaming media service is in an effective state;
the setting unit is used for setting the state of the streaming media service to be a failure state when the judging unit judges that the current time exceeds the failure time of the streaming media service;
a recording unit, configured to record interruption information of the streaming media service;
a sending unit, configured to send a broadcast stop request to a head-end system, so that the head-end system stops allocating resources for the streaming media service.
11. The user service terminal of claim 10, further comprising:
the setting unit is further configured to set a state of the streaming media service to an active state when a service request of the streaming media service is received;
the resetting unit is used for resetting the service failure time of the preset streaming media service validity processing timer, wherein the service failure time is the sum of the current time and the preset service failure duration.
12. The user service terminal according to claim 11, wherein the judging unit comprises:
the time comparison unit is used for comparing the current time with the service failure time of the streaming media service validity processing timer when the streaming media service validity processing timer reaches the running period;
and the result determining unit is used for determining that the streaming media service is valid when the current time is less than the service expiration time, and determining that the streaming media service is invalid when the current time is greater than the service expiration time.
13. The user service terminal of claim 10, further comprising:
an obtaining unit, configured to obtain interruption information of the media service when the streaming media service enters an active state from the disabled state;
the sending unit is further configured to send a service restoration request to the head-end system according to the interruption information, and request the head-end system to send streaming media to the user service terminal from a breakpoint of the streaming media service.
14. A headend system, comprising:
a receiving unit, configured to receive a broadcast stop request sent by a user service terminal, where the broadcast stop request is a request sent by a streaming media service terminal after determining that current time exceeds failure time of the streaming media service when the streaming media service is in an effective state;
a recording unit, configured to record interruption information of the streaming media service;
a configuration unit, configured to stop allocating resources for the streaming media service.
15. The headend system of claim 14 wherein the configuration unit comprises:
a session obtaining unit, configured to obtain a service session of the streaming media service;
a resource releasing unit, configured to release network resources, service resources, and broadcast resources allocated to the streaming media service;
and the session clearing unit is used for clearing the service session of the streaming media service.
16. The head-end system of claim 14, wherein the receiving unit is further configured to receive a service recovery request sent by the user service terminal, where the service recovery request is a request sent by the user service terminal when the user service terminal determines that the streaming media service enters the valid state from the invalid state;
further comprising:
an acquisition unit configured to acquire the interruption information;
and the sending unit is used for sending the streaming media to the user service terminal from the breakpoint of the streaming media service according to the interruption information.
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