WO2010060322A1

WO2010060322A1 - Control method and device for playing program

Info

Publication number: WO2010060322A1
Application number: PCT/CN2009/074365
Authority: WO
Inventors: 张毅
Original assignee: 华为技术有限公司
Priority date: 2008-11-03
Filing date: 2009-10-09
Publication date: 2010-06-03
Also published as: CN101415082A; CN101415082B

Abstract

The embodiment of the present invention discloses a control method for playing program, wherein the program access equipment receives the playing instruction sent by the user terminal, and the playing instruction contains the program identifier; the program access equipment performs the operation of playing the program content according to the program identifier. The method provided by the embodiment of the present invention can increase the quantity of programs which can be watched by the user. Furthermore, the embodiment of the present invention also provides another control method for playing program, corresponding program access equipment and corresponding user terminal.

Description

The present invention claims the priority of Chinese patent application submitted to the Chinese Patent Office on November 3, 2008, the application number is 200810217249.2, and the invention name is "a control method and device for playing a program". The entire contents of which are incorporated herein by reference. Technical field

The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for controlling program play. Background of the invention

Watching DTV (Digital TV: Digital TV) with digital closed-line and digital set-top boxes is now more common. DTV is evolved from analog TV. The standard for commonly used DTV systems is DVB-C (Digital Video Broadcasting-Cable), which uses standard encoding transmission of MPEG2 (Moving Pictures Experts Group). Video, at a frequency of 50~750Mhz, provides one digital video signal every 6MHz, and broadcasts TV programs. Generally, more than 100 channels of TV service can be provided. DVB-C includes content server, CMTS (Cable Modem Termination System) and multiple STBs (Set-Top-Box: set-top boxes); these entities pass HFC (Hybrid Fiber - Coaxial: fiber and coaxial cable phase) Combined hybrid) network connection.

The CMTS broadcasts the digital video signal to the HFC network. The STB can receive the video signals of all frequencies in the HFC network, and decodes the video signal of one of the channels selected by the user, and outputs the video signal to the TV. The user can control the STB selection through the remote controller. The different frequencies are decoded and output to see different TV programs.

The inventors found in the prior art that at least the following problems exist in the prior art: In the existing DTV system, the number of programs that the user can watch is limited due to the limitation of the number of channels provided by the CMTS. Summary of the invention

An embodiment of the present invention provides a method for controlling program play, which is used to increase the number of programs that a user can view. The method includes:

The program access device receives a play command sent by the user terminal, where the play command includes a program identifier; the program access device performs a program content play operation according to the program identifier, if the program identifier corresponding program is a program sharing network current The cached program instructs the program sharing network to play the program content corresponding to the program identifier for the user terminal. An embodiment of the present invention further provides a method for controlling program play, where the method includes: acquiring, by a program access device, a program channel mapping relationship;

The program access device sends a program channel mapping relationship to the user terminal;

The program channel mapping relationship is used by the user terminal to select a channel identifier and obtain program content on a channel corresponding to the channel identifier.

Correspondingly, the embodiment of the present invention further provides a program access device, where the program access device includes: a receiving unit, configured to receive a play instruction sent by the user terminal, where the play instruction includes a program identifier; And executing the program content playing operation according to the program identifier, if the program identifier corresponding program is a program currently cached by the program sharing network, instructing the program sharing network to play the program content corresponding to the program identifier for the user terminal.

An embodiment of the present invention provides a program access device, where the program access device includes:

a program channel mapping relationship obtaining unit, configured to acquire a program channel mapping relationship;

a program channel mapping relationship sending unit, configured to send the program channel mapping relationship to the user terminal; the program channel mapping relationship is used by the user terminal to select a channel identifier and obtain program content on a channel corresponding to the channel identifier.

The embodiment of the invention further provides a user terminal, including:

a play instruction sending unit, configured to send a play instruction, where the play instruction includes a program identifier; and a content receiving unit, configured to receive program content played by the program access device according to the program identifier.

The embodiment of the present invention establishes a mapping relationship between a program and a channel, and applies the mapping relationship to find a corresponding program content, so that the number of programs that the user can watch can be increased on a limited bandwidth. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic flow chart of a method according to Embodiment 1 of the present invention;

2 is a schematic flowchart of a method provided by Embodiment 2 of the present invention;

3 is a schematic flowchart of a method provided by Embodiment 3 of the present invention;

4 is a schematic structural diagram of a user terminal according to Embodiment 4 of the present invention;

FIG. 5 is a schematic structural diagram of a program access device according to Embodiment 5 of the present invention;

FIG. 6 is a schematic structural diagram of a program access device according to Embodiment 6 of the present invention. Mode for carrying out the invention The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

An embodiment of the present invention provides a method for controlling program play, including:

The program access device receives a play instruction sent by the user terminal, where the play command includes a program identifier; and the program access device performs a program content play operation according to the program identifier.

Taking DVB-C as an example, the program access device can be a CMTS, and the user terminal can be an STB. The specific implementation manner will be described below by taking the DVB-C system as an example.

It should be noted that the embodiment of the present invention can also be applied to expand and transform the current wireless terrestrial digital broadcasting network.

In the DVB-H system, the terrestrial digital TV transmission tower can be similar to the CMTS as the program access device, and the wireless mobile multimedia terminal can realize the function of the user terminal in the above embodiment. The wireless IP network is similar to the HFC IP network. For ease of presentation, the following system and method embodiments are exemplified by DVB-C only.

The number of digital TV channels in the cell in which each CMTS is located is limited by the bandwidth of the HFC network. In fact, the number of programs to be broadcasted by the network is generally much larger than the number of channels that the HFC network can provide. In the embodiment of the present invention, a program channel mapping relationship is dynamically provided for a fixed number of DVB-C digital broadcast channels, and corresponding program content is searched through the program channel mapping relationship, so that the user can view the limited HFC network bandwidth. The number of programs.

The program channel mapping relationship can be implemented by a table, which is referred to as a program channel table. Of course, the program channel mapping relationship can also be implemented by certain algorithms, database mapping, and the like. The following embodiments of the present invention are described by taking only the program channel table as an example. The embodiments of the present invention are also applicable to other types of program channel mapping relationships. It should be noted here that the program channel table records the mapping relationship between the program identification and the channel identification. For example, the program channel table may be a correspondence between the program number and the channel identifier, the program number is a number identifying the program, and may be represented by a digital input by the remote controller; the program channel table may also be a program name or a correspondence of other program information and the channel identifier. The relationship, wherein the program name or other program information can be selected by the user on the remote controller, and for a terminal having a text input function, such as an STB having an IMS client capability, the program name or other program information can also be directly input on the terminal. The above program number, program name or other information identifying the program content is collectively referred to as a program identification. In the following embodiments, the program identification is described by using the program number as an example, and the embodiment of the present invention is also applicable to other types of program identification. In addition, the channel identifier is used to identify a specific channel. Embodiment 1 of the present invention provides a digital television DTV system, as shown in FIG. 1:

The STB in the system can be an STB supporting a High Definition TV (HDTV), or an STB of a DTV; or an STB supporting IP packets at the same time. The STB in the system can handle IP data streams and media streams (HDTV media streams if HDTV is supported; DTV media streams and digital TV program tickets if DTV is supported); STB can have IPTV (Internet Protocol TV: based) The client function of the IP network TV, such as a list of program listings; the user selects the program through this list of programs.

The content server sends the program to the CMTS corresponding to the user and plays it.

In this system, the user can send a play command through the IP channel provided by the STB, and then receive the media stream through the STB to obtain the desired program.

The functions of the CMTS in the system mainly include managing and controlling the channel, QoS and IP address of the CM (Cable Modem); and acquiring and transmitting the media resources and managing the channel; the CMTS in the embodiment of the present invention further The program channel table can be acquired and transmitted to the STB, and the program channel table can be maintained.

Embodiment 2 of the present invention provides a method for controlling program play. In this method, the number on the user's remote control represents the program number, and the user selects the program number. The specific channel of the program corresponding to the program number is played, and the ijTS can be dynamically determined by the CMTS according to the situation of the channel resource, and the STB is notified of the determined result (for example, the information including the channel identifier in the determined result), the STB is specified. The channel receives the signal to see the selected program. This embodiment sets a program channel table on the CMTS in which the mapping relationship between the program number and the channel identifier is recorded. It should be noted that the program number therein is used to uniquely identify a program content. The specific implementation steps of this embodiment are shown in Figure 2:

Step 201: After the STB is powered on, it is connected to the CMTS and authenticated. After the authentication is passed, the STB obtains an IP address. Step 202: The user selects a program to be viewed, and the STB corresponds to the CMTS identifier to which the user belongs.

The CMTS issues a play command; the play command includes a program number selected by the user.

In this embodiment, the program channel table in each CMTS is a logical pool of program resources, which may be composed of two parts: one part is the program currently being played, and the other part is the currently unplayed program. For the program being played, the channel identifier of the program number map can be queried from the program channel table; for the program that is not currently playing, there is no mapped channel identifier.

Step 203: The CMTS receives the play instruction, obtains the program number therein, and performs play processing. Specifically, the method includes: determining whether the program is being played, and if yes, the CMTS obtains the channel identifier corresponding to the program number according to the program number and the program channel table, and sends the corresponding channel identifier to the STB, and the STB receives the program in the specified channel segment. signal; Otherwise, the user selects a program that is not currently played by the CMTS. If the CMTS has no available channel resources, the CMTS can directly reject the user's play request; if the CMTS has free channel resources, the CMTS can request the content server from the content server. Program content. The specific steps for the CMTS to request the content of the program from the content server are as follows:

A) the content server queries the channel occupancy of the CMTS. When the CMTS has the idle channel resource, the content server pushes the program content corresponding to the program number selected by the user to the CMTS, or the CMTS applies to the content server to join the program number. The program is located in the multicast group;

B) the CMTS selects an idle channel for playing the program content corresponding to the program number, and associates the channel identifier of the idle channel with the program number, and simultaneously updates the current program channel table;

C) The CMTS sends the selected channel identification and program source to the STB, and the STB receives the program content on the designated channel. In addition, the program content can be received by all STBs under the CMTS, that is, all the STBs under the CMTS can receive the program content; the program content can also be received only by the STB with the receiving authority under the CMTS, that is, sent. The content of the program requested by the STB of the play command cannot be received by all STBs under the CMTS.

In this embodiment, the following settings can also be made on the CMTS: If the CMTS channel where the user is located is already fully occupied, the user can only select in the list of channels currently being broadcasted; if a certain broadcast channel exceeds a certain time (For example, 5 minutes) Without any user watching, the CMTS can recycle the channel, that is, set the channel to the idle state.

In this embodiment, in the case that the number of CMTS channels is full, in order to expand the number of available channels, the playable programs in the local P2P network can be merged into the DVB channel, once the user selects the program but has no free channel. , you can switch to the IP channel to watch the selected program.

In the above embodiment, the program channel table is dynamically provided for the DVB digital broadcast channel, and the corresponding program content is searched through the program channel table, and the correspondence relationship between the program channel and the program is controlled by the CMTS, and the correspondence relationship can be dynamically adjusted according to requirements, so that The limited HFC network bandwidth increases the number of programs that users can watch.

In the second embodiment, it is also possible to store some program content in the STB and the CMTS for the user to select to view. When the user views the program, the program segment is cached in the STB; thus, the storage capabilities of the CMTS are used together between the STBs and the STBs to form a program sharing network (such as a localized P2P network); and according to the program source of each STB cache. , update the program channel table corresponding to the CMTS. In this case, the program channel table of the CMTS is composed of three parts: one is the program currently being played, the second is the program currently cached in the P2P network, and the third is the currently unplayed program; wherein the current cached program utilizes the local P2P The bandwidth capability of the network does not affect the broadcast of the CMTS The number of channels. In order to realize the distinction of the above three parts of the program, it may be implemented by using a special mark or other means in the program channel table.

The user terminal selects the program channel to be viewed, and if the currently cached program is selected, it is directly played in the P2P network; if the program currently being played or the program currently not played by the CMTS is selected, it is similar to the second embodiment.

It should be noted that, in this embodiment, program content sharing is performed between the STB and the STB, and the sharing mode may adopt the P2P mode. In this embodiment, by storing the program content on the STB, the STB can be used to provide program content to the user through the IP channel, and the bandwidth pressure of the CMTS on the backbone network and the load requirement on the content server are alleviated; by between the STB and the STB. Sharing program content, enriching the source of program channels.

Of course, the STB can also have the ability of local recording. On the basis of the above DTV broadcast channel and P2P shared channel, it is also possible to add a local program schedule to the STB, and use the locally recorded time-shifted TV content combined with the P2P cache content. Users provide a richer and more flexible video service.

Embodiment 3 of the present invention provides a method for controlling program play. In this embodiment, the number on the remote controller of the user represents the channel identifier, and when the user selects the program, it is necessary to know the program number currently being broadcasted by each channel. Initially, there is no program broadcast on each channel, and the user can select the program to be played through the program channel table. After the user selects the program, the CMTS will dynamically establish the mapping relationship between the channel identifier and the program number. Other users can select the program by using the channel identifier. If the user wants to select a new program, it needs to select from the program list and be maintained by the CMTS. Channel and program mapping. This embodiment sets a program channel table on the CMTS, in which the mapping relationship between the program number and the channel identifier is recorded, and the user still requests the corresponding program through the channel identification. The specific implementation steps of this embodiment are shown in Figure 3:

Step 301: The CMTS acquires a program channel table.

Step 302: The CMTS sends the program channel table to the STB;

Step 303: The STB selects a channel identifier of the program being played according to the program channel table, and acquires the program content on the channel corresponding to the channel identifier.

In the prior art, a certain number of programs are fixedly broadcasted on each channel on the CMTS, and the video signal of the channel is selected by the user, decoded and output to the television, and the user can control the STB to select different frequencies for decoding output through the remote controller. However, the user needs to know the programs broadcasted by each channel by memory to make selection, so that the user is not very convenient to watch the program. In the embodiment, the user can select the program being played according to the program channel table obtained from the CMTS for viewing, so that the user's selection is more targeted and the user experience is enhanced. Another In addition, the correspondence between the program channel and the program is controlled by the CMTS, and the correspondence can be dynamically adjusted according to requirements, so that the number of programs that the user can watch is increased on a limited bandwidth.

In addition, the user can also select a program that has not yet been broadcasted. The specific implementation can be as follows:

The STB sends a program application instruction to the CMTS, where the program application instruction includes a program identification;

The CMTS allocates a channel according to the program identifier, and plays the program content corresponding to the program identifier on the allocated channel;

The CMTS identifies the assigned channel for transmitting the assigned channel to the STB, and the STB can view the applied program directly on the assigned channel.

After the channel is allocated by the CMTS, the CMTS can also update the program channel table according to the channel identifier of the assigned channel, so that the later STB can obtain the latest program channel table when the program is viewed, and the bandwidth of the limited HFC network is increased. The number of programs the user can watch.

In this embodiment, the number on the user's remote control represents the channel identification and is compatible with existing user habits. In the specific implementation process, the program channel table can be established and maintained on the CMTS, so that the mapping of the channel and the program can be performed on the CMTS, and the program channel table can be sent to the STB to perform the viewing selection of the program by the STB, once the user When a channel to be viewed is selected, the CMTS receives the channel identification, and the program can be played in the existing manner.

Through the program channel table received by the STB, if the user sees that the program that he wants to watch has a corresponding channel identifier, then the channel identifier is selected to be viewed.

In this embodiment, the CMTS can download the initial program channel list from the content server after powering up. In the subsequent process, the CMTS can update the program channel list. For example, after the user selects to watch a program, if the program has not been played, the CMTS may request the content of the program from the content server, allocate the channel according to a certain strategy (such as frequency), and update the program channel according to the channel identifier of the assigned channel. table.

In addition, the CMTS can also recycle the idle channel according to needs, and update the program channel table accordingly, which can be: If all the channels of the CMTS have already been broadcasted, and the user can no longer apply to view the programs that have not yet been played, the CMTS can When a channel times out and there is no broadcast demand, the CMTS reclaims the channel. In this way, there are idle channel resources available to the user, which improves resource utilization. Of course, the CMTS can also recover some channel resources at a suitable time (such as each time period or real-time monitoring) according to a certain strategy to improve the channel resource utilization rate.

The HFC network in the foregoing embodiment is only an example. The IP channel for transmitting program control information in the embodiment of the present invention may also utilize a non-HFC network, such as a wireless network such as ADSL, 3G, or WLAN. Users go online through the terminal and Through the signing authentication of the STB and CMTS, it is possible to control the content of the program being played.

In a specific implementation, the IMS (IP Multimedia Sub-System: IP Multimedia Subsystem) client can perform IP voice chat or IP voice hotline connection while watching TV. For example, in the fourth embodiment of the present invention, after the IMS client capability is built in the STB, the functions of the voice and video multimedia communication can be increased on the basis of implementing the services of the foregoing Embodiments 2 and 3. At this point, the IMS client software runs in the STB; the remote control can add microphone and headphone functions, can be used as a handset at the same time, and can be connected to the STB via Bluetooth or the like. This built-in voice communication function enhances the communication of watching video programs, and can also communicate with ordinary mobile phones and phones. In this embodiment, the STB with the IMS client capability is connected to the CMTS and authenticated. After the authentication is passed, the STB obtains an IP address, and obtains a program channel list corresponding to the CMTS from the content server through the IP channel.

In addition, for the IMS client, you need to start the IMS client registration and check the online status of your friends.

After the user terminal selects the program channel to be watched and watches the program, according to the online situation of the friend and the hotline policy of the local STB, the two STBs can be directly controlled to enter the hotline session state; while watching the program, the channel of the friend is displayed, and Chat with your friends at any time with the ClickToTalk feature.

In addition, because the IMS client is built into the STB, it can be regarded as a multimedia voice terminal, which can perform cheap voice communication in the HFC network, and can also communicate with the traditional PSTN.

In the embodiment of the present invention, by combining the advantages of the IP network and the HFC network, the number of broadcast channels of the HFC network can be greatly expanded, and conditions for providing services for HFC large-scale networking are provided, and the user is provided with personalized channel selection. The content of the user enables the user to have certain control over the broadcast content; through the modification of the HFC system, the IPTV and the digital broadcasting system can be integrated, and the P2P video broadcasting and the IMS communication can be integrated. It is conducive to the full use of resources and improve the competitiveness of the system.

In the embodiment of the present invention, the program content of each cell is different according to the user's selection, and can satisfy a wider range of HFC networking in the future, and provide an over-limit program source selection in a limited digital broadcast channel.

The fourth embodiment of the present invention further provides a user terminal 400, which may include:

a play instruction sending unit 401, configured to send a play instruction, where the play instruction includes a program identifier;

The content receiving unit 402 is configured to receive program content played by the program access device according to the program identifier.

The user terminal may further include:

a program content storage unit 403, configured to cache program content;

The sharing interface unit 404 is configured to establish a program sharing network by using the cached program content by the program access device. In addition, the user terminal may further include: an IMS client unit 405, configured for multimedia communication. The user terminal can be an STB or a wireless mobile multimedia terminal. Taking the STB as an example, the STB can also have multiple convergence capabilities based on the number of programs that users can watch, such as the ability to have both a digital HD set-top box and an IP set-top box. It can also be extended to support IMS client capabilities, P2P. Client capabilities are shared. This makes it easier to integrate and unify multiple systems.

The fifth embodiment of the present invention further provides a program access device 500, which may include:

The receiving unit 501 is configured to receive a play instruction sent by the user terminal, where the play instruction includes a program identifier, and the playing unit 502 is configured to perform a program content play operation according to the program identifier.

The playing unit 502 may include a channel identifier acquiring unit 503, configured to acquire a channel identifier corresponding to the program identifier according to the program identifier.

The playing unit 502 may further include a content requesting unit 504, configured to request, from the content server, program content corresponding to the program identifier; wherein the content requesting unit 504 may include a program content receiving unit 505, configured to receive the program identifier corresponding to the program server The program content; or the multicast joining unit 506 is configured to apply to the content server to join the multicast group where the program identifier corresponds to the program.

The playing unit 502 may further include an idle channel acquiring unit 507, configured to acquire an idle channel and play the program content on the idle channel; in this case, the program access device further includes a program channel mapping relationship updating unit 508, configured to Updating the current program channel mapping relationship according to the channel identifier of the idle channel and the program identification.

The playing unit 502 in this embodiment may further include a shared program play instructing unit 509, configured to instruct the program sharing network to play the program content corresponding to the program identifier for the user.

The program access device provided by the above embodiment may be a CMTS in a DVB-C system or a terrestrial digital TV transmission tower in a DVB-H system. Taking the DVB-C system as an example, the program access device, ie, the CMTS, dynamically provides a program channel mapping relationship for a fixed number of DVB digital broadcast channels, and searches for corresponding program content through the program channel mapping relationship, and the program channel and program are controlled by the CMTS. Correspondence between the two, the correspondence can be dynamically adjusted according to the demand, so that the number of programs that the user can watch increases.

The sixth embodiment of the present invention further provides a program access device 600, which may include:

a program channel mapping relationship obtaining unit 601, configured to acquire a program channel mapping relationship;

The program channel mapping relationship sending unit 602 is configured to send the program channel mapping relationship to the user terminal. The user terminal selects the channel identifier according to the program channel mapping relationship, and acquires the program content on the channel corresponding to the channel identifier.

In this embodiment, through the above program access device, the user can map according to the program channel obtained from the CMTS. The program selected is being watched for viewing, so that the user's choice is more targeted and enhances the user experience. Moreover, the correspondence relationship between the program channel and the program is controlled by the CMTS, and the correspondence relationship can be dynamically adjusted according to requirements, so that the number of programs that the user can watch increases.

In addition, the program access device 600 may further include:

The program application instruction receiving unit 603 is configured to receive a program application instruction sent by the user terminal, where the program application instruction includes a program identifier;

a channel allocating unit 604, configured to allocate a channel according to the program identifier and play the program content corresponding to the node target on the allocated channel;

The channel identifier sending unit 605 is configured to send the channel identifier of the allocated channel to the user terminal.

In this way, the content of the program that the user can watch is not restricted by the interface being played, but can apply for and obtain the program to be viewed by himself.

The CMTS sends the channel identification of the assigned channel to the STB, and the STB can view the applied program directly on the assigned channel.

In addition, the program access device may further include:

The updating unit 606 is configured to update the program channel mapping relationship according to the channel identifier of the allocated channel, so that the later STB application can obtain the latest program channel mapping relationship when the program is viewed, and the number of programs is increased.

The program access device provided by this embodiment may be a CMTS in a DVB-C system or a terrestrial digital TV transmission tower in a DVB-H system. Taking the DTV system as an example, a program channel mapping relationship is set on the program access device, that is, the CMTS, and the mapping relationship between the program identifier and the channel identifier is recorded in the program channel mapping relationship, and the user still requests the corresponding program through the channel identifier. .

The embodiment of the present invention provides a control system for program play, which may include any of the program access devices provided in the foregoing embodiments, and the user terminal provided in the foregoing embodiment. The system can also include a content server. The system realizes the HFC TV broadcast network to support broadcast program channels exceeding its channel capacity through dynamic control.

Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented by hardware or by software plus a necessary general hardware platform. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (which may be a CD-ROM, a USB flash drive, a mobile hard disk, etc.), including several The instructions are for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform the methods described in various embodiments of the present invention. The above description is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can also make several improvements and retouchings without departing from the principles of the present invention. It should be considered as the scope of protection of the present invention.

Claims

Rights request

A method for controlling program play, characterized in that the method comprises:

The program access device receives a play command sent by the user terminal, where the play command includes a program identifier; the program access device performs a program content play operation according to the program identifier, if the program identifier corresponding program is a program sharing network current The cached program instructs the program sharing network to play the program content corresponding to the program identifier for the user terminal.

The method according to claim 1, wherein the program identification corresponding program is a program being played, and the program access device performing the program content playing operation according to the program identifier comprises:

The program access device acquires a channel identifier corresponding to the program identifier according to the program identifier; the program access device notifies the user terminal to receive program content on a channel corresponding to the channel identifier.

The method according to claim 1, wherein the program identification corresponding program is a currently unplayed program, and the program access device performing the program content playing operation according to the program identifier comprises:

The program access device requests, from the content server, program content corresponding to the program identifier;

The program access device notifies the user terminal to receive the program content and play the program content on the selected idle channel.

4. The method according to claim 3, wherein the program content played on the idle channel is allowed to be received by a user terminal having the receiving authority.

The method according to claim 3, wherein the program access device requests the content server to program content corresponding to the program identifier, including:

The program access device applies to the content server to join the multicast group where the program identifier corresponding program is located.

The method according to claim 3, wherein the method further comprises:

The program access device updates a current program channel mapping relationship according to the channel identifier of the idle channel and the program identifier.

7. A method for controlling program play, wherein the method comprises:

The program access device acquires a program channel mapping relationship;

The method according to claim 7, wherein the method further comprises: The program access device receives a program application instruction sent by the user terminal, where the program application instruction includes a program identifier;

And the program access device allocates a channel according to the program identifier included in the program application instruction, and plays the program content corresponding to the program identifier included in the program application instruction on the allocated channel;

Transmitting, by the program access device, a channel identifier of the allocated channel to the user terminal;

The program access device updates the program channel mapping relationship according to a channel identifier of the allocated channel and a program identifier included in the program application instruction.

A program access device, wherein the program access device comprises:

a receiving unit, configured to receive a play instruction sent by the user terminal, where the play instruction includes a program identifier; a play unit, configured to perform a program content play operation according to the program identifier, if the program identifier corresponding program is a program sharing network current The cached program instructs the program sharing network to play the program content corresponding to the program identifier for the user terminal.

The program access device according to claim 9, wherein the playing unit comprises: a channel identifier acquiring unit, configured to acquire a channel identifier corresponding to the program identifier according to the program identifier.

The program access device according to claim 9, wherein the playing unit comprises: a content requesting unit, configured to request, from a content server, program content corresponding to the program identifier; an idle channel acquiring unit, configured to: Acquiring an idle channel and playing the requested program content on the free channel.

12. A program access device, wherein the program access device comprises:

The program access device according to claim 12, wherein the program access device further comprises:

a program application instruction receiving unit, configured to receive a program application instruction sent by the user terminal, where the program application instruction includes a program identifier;

a channel allocation unit, configured to allocate a channel according to the program identifier included in the program application instruction, and play the program content corresponding to the program identifier on the channel;

a channel identifier sending unit, configured to send a channel identifier of the allocated channel to the user terminal; And an updating unit, configured to update the program channel mapping relationship according to the channel identifier of the allocated channel and the program identifier included in the program application instruction.

14. A user terminal, wherein the user terminal comprises:

The user terminal according to claim 14, wherein the user terminal further comprises: a program content storage unit, configured to cache the received program content;

a shared interface unit, configured to establish, by the program access device, the program sharing network by using the cached program content