WO2014067289A1

WO2014067289A1 - Media content scheduling method, system and device

Info

Publication number: WO2014067289A1
Application number: PCT/CN2013/077763
Authority: WO
Inventors: 陈宇; 兑继英; 岳春荣
Original assignee: 华为技术有限公司
Priority date: 2012-10-31
Filing date: 2013-06-24
Publication date: 2014-05-08
Also published as: CN102932678A

Abstract

Provided in an embodiment of the present invention are a media content scheduling method, system and device, the method comprising: a client terminal establishes a live broadcast service session with a first media server through the scheduling of a scheduling server; receiving a time shifting service request from the current channel, and if the first media server does not support the time shifting service of the current channel, then disconnecting the live broadcast service session with the first media server; initiating the time shifting service request from the current channel to the scheduling server; and transmitting a time shifting service request to a second media server according to a time shifting service response from the scheduling server, so as to establish a time shifting service session with the second media server. The media content scheduling method in the embodiment of the present invention avoids the problem of wasting storage resources due to the fact that time shifting programs are recorded by all media servers.

Description

Media content scheduling method, system and device

The present application claims priority to Chinese Patent Application No. 201210427668.5, entitled "Media Content Scheduling Method, System and Apparatus", filed on October 31, 2012, the entire contents of in.

Technical field

The present invention relates to the field of communications, and in particular, to a media content scheduling method, system, and apparatus. Background technique

Internet Protocol Television (IPTV) is the product of the development of network technology and media technology to a certain stage. Compared with the traditional one-way broadcast TV, IPTV solves the problem of restrictions on the playing time when watching TV programs, satisfies the needs of people's freedom of viewing, provides powerful interactive functions, and truly realizes the media provider and The ability to interact substantively with consumers.

The services provided by the IPTV system include Time Shift (TSTV) services, and TSTV supports users to review live programs within a certain time frame. The time shift service supports operations such as pause, rewind, locate, switch, status display, and time display. Compared with traditional TV live broadcasts, time-shifting services bring a new feeling to users.

In order to provide a time-shifted service, in a current implementation manner, all media servers are required to start time-shift recording while providing a live broadcast service, so that when the terminal user requests the current channel time-shift service, the media server directly uses the local recording file. Serve end users. However, this approach results in a waste of storage resources, as some media servers are rarely requested to provide time-shifted services.

Summary of the invention

The invention provides a media content scheduling method, device and system for saving storage resources.

In one aspect, a media content scheduling method is provided, including: a client establishes a live broadcast service session with a first media server by scheduling a server; receiving a time shift service request of a current channel, and determining the first media server Whether to support the time shift service of the current channel; if the first media server does not support the time shift service of the current channel, disconnect the live broadcast service session with the first media server; initiate the current channel to the dispatch server Time-shifting service request; receiving a time-shifted service response from the dispatch server, the time-shifted service response including an address of a second media server providing a time-shifted service to the current channel; when transmitting to the second media server Transmitting a service request, establishing a time-shifted service session with the second media server. With the first embodiment of the first aspect of the present invention, the method further includes: if it is determined that the first media server supports the time shift service, using the current live service session, sending the time shift to the first media server request.

In combination with the first aspect of the first aspect of the present invention or the second embodiment of the first aspect of the first aspect of the present invention, the client initiates a live broadcast service request to the dispatch server, and receives a live broadcast service response returned by the dispatch server, the live broadcast service The response includes the address of the first media server, where the first media server is determined by the scheduling server according to the location of the client and the load condition of the media server; the client establishes and the first according to the address of the first media server. Live business session between media servers.

In a third implementation manner of the second embodiment of the first aspect of the present invention, the live broadcast service response further includes a time shift state parameter of the first media server, where the time shift state parameter indicates whether the first media server is Supporting the time-shift service of the current channel; determining whether the first media server supports the time-shift service of the current channel is: determining whether the first media server is determined according to the time-shift parameter of the first media server Support the time shift service of the current channel.

With reference to the fourth embodiment of the first aspect of the present invention, the determining whether the first media server supports the time shift service of the current channel is specifically: determining, according to the time shift state parameter of the first media server, Whether the first media server supports the time shift service of the current channel; the time shift parameter is sent by the first media server to the client in the process of establishing a live broadcast service session, where the time shift parameter indication Whether the first media server supports the time shift service of the current channel.

In another aspect, a client is provided, including: a session unit, configured to establish a live broadcast service session with a first media server by scheduling a scheduling server, and a receiving unit, configured to establish, with the first media server, the session unit After the live broadcast service session, the time shift service request of the current channel is received; the determining unit is configured to determine, according to the time shift service request received by the receiving unit, whether the first media server supports the time shift service of the current channel; a processing unit, configured to: when the determining unit determines that the first media server does not support the time shift service of the current channel, disconnect the session with the first media server; and send, by the processing unit, the first When the media server does not support the time shift service, the time shift service request of the current channel is initiated to the scheduling server; the session unit is further configured to provide the current channel according to the second media server address returned by the scheduling server. Transmitting a second media server of the service to send a time shift service request, establishing the second When the shift between the server industry body Business session.

With the first embodiment of the second aspect of the present invention, the processing unit is further configured to: when the determining unit determines that the first media server supports a time shift service, using the current live broadcast service session, by using the sending unit A time shift play request of the current channel is sent to the first media server.

According to the second embodiment of the first embodiment of the second aspect of the present invention, the sending unit is further configured to: initiate a live broadcast service request to the scheduling server; and the receiving unit is configured to receive, by the scheduling server, the included Providing a response message of the first media server address of the live service; the session unit is configured to establish a live service session with the first media server according to the first media server address.

In the third embodiment of the second embodiment of the second aspect of the present invention, the response message received by the receiving unit further includes whether the first media server supports a time shift parameter of the current channel time shift service.

In a fourth implementation manner of the second embodiment of the second aspect of the present invention, the receiving unit further receives the feedback of the first media server during a live broadcast service session with the session unit and the first media server. Whether to support the time shift state parameter of the current channel time shift service.

With reference to the fifth embodiment of the second embodiment or the fourth embodiment of the second invention, the determining unit is specifically configured to determine, according to the time shift state parameter, whether the first media server supports time shift service

The third aspect provides a media content scheduling system, including a client, a scheduling server, configured to receive a client live broadcast service request, and return a response message to the client according to the location of the client and the load of the media server, where The response message includes a first media server address that provides a live broadcast service, and is further configured to receive a time shift service request of the current channel sent by the client, and return a second media server address that supports the current channel time shift service to the client. a first media server, configured to provide a channel live broadcast service to the client, and a second media server, configured to provide a channel time shift service to the client.

In the media content scheduling method of the embodiment of the present invention, the system only selects a part of the media server to record the program. When the user selects the current channel time shift service during the live broadcast process, the client determines that the current live media server cannot provide the current channel time shift service. Redirecting through a dispatch server to a time-shifted media server capable of providing a current channel time-shifting service, the time-shifted media server providing time shifting to the user Service. The problem of wasted storage resources caused by time-shifted programs recorded by all media servers is avoided.

DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings to be used in the embodiments of the present invention will be briefly described below. It is obvious that the drawings described below are only some embodiments of the present invention, Those skilled in the art can also obtain other drawings based on these drawings without paying any creative work.

FIG. 1 is a schematic diagram of an application scenario system architecture according to an embodiment of the invention.

2 is a schematic flow chart of a media content scheduling method according to an embodiment of the present invention;

FIG. 3 is a diagram showing a signaling interaction diagram of a media content scheduling method according to another embodiment of the present invention; FIG.

FIG. 4 is a diagram showing a signaling interaction diagram of a media content scheduling method according to still another embodiment of the present invention; FIG.

FIG. 5 is a block diagram showing a structure of a client according to an embodiment of the present invention; FIG.

FIG. 6 is a block diagram showing the structure of a client according to another embodiment of the present invention.

FIG. 7 is a block diagram showing the structure of a media content scheduling system according to an embodiment of the present invention.

detailed description

BRIEF DESCRIPTION OF THE DRAWINGS The technical solutions in the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative work are within the scope of the present invention.

FIG. 1 is a schematic diagram of an application scenario C匪 according to an embodiment of the present invention. As shown in FIG. 1 , a IPTV system deploys a content delivery network (Content De l ivery Ne twork, CDN) in a distributed networking manner. For deployment, the CDN network includes a central node 101, an area node 102, and an edge node 103. The edge node is generally deployed close to the user. When the user requests the service, the CDN selects the node with the content closest to the user to serve the user. . Each node includes a live media server that provides live broadcast services to users and a time-shifted media server that provides time-shift services.

FIG. 2 is a schematic flowchart of a method for scheduling a media content according to an embodiment of the present invention. In the embodiment of the present invention, an IPTV system selects a media server with a high degree of access to a live channel according to the access heat of the media server in each node. Time shift recording. As shown in FIG. 2, the media content scheduling method includes:

201. The client establishes a live broadcast with the first media server by scheduling the scheduling server. Business session

Specifically, the user selects a live broadcast service, such as a unicast request for a live channel. The client sends a unicast service request of the live channel to the scheduling server, and the scheduling server may select the first media server that is closer to the user and is lighter in load according to the distribution of the live channel according to the nearest and lightest scheduling policy. The live broadcast service of the live channel is provided to the user, and the address of the first media server is returned to the client. The client requests the broadcast content from the first media server according to the address of the first media server, and establishes a live broadcast service session with the first media server.

202. Receive a time shift service request of a current channel of the user, and determine whether the first media server supports the time shift service of the current channel.

Optionally, when the scheduling server returns the first media server address to the client, the scheduling server further sends the time shift state parameter of the time shift service of the channel requested by the client to the client.

Optionally, in the process of establishing a live broadcast service session between the first media server and the client, the first media server may also send the time shift state parameter of the time shift service of the channel requested by the client to the client.

The client detects that the user is watching the live channel, and performs a back-and-forward time shift operation on the live channel, and determines whether the first media server supports the time shift service of the current channel according to the time shift state parameter of the first media server.

203. If the first media server does not support the time shift service of the current channel, disconnect the live broadcast service session with the first media server, and initiate a time shift service request to the scheduling server.

Specifically, the user performs a back-off and time-shift operation on the live channel in the live channel, and the client determines whether the first media server that provides the live broadcast service supports the time-shift service, and if the first media server that provides the live broadcast service is determined. If the time shift service of the current channel is not supported, the live broadcast service session with the first media server is disconnected, a new session is established with the dispatch server, and a time shift service request of the current channel is initiated to the dispatch server.

204. Receive a time shift service response from the scheduling server, where the time shift service response includes an address of a second media server that provides a time shift service to the current channel.

205. Send a time shift service request to the second media server, and establish a time shift service session with the second media server. . Specifically, after receiving the time-shift service request of the current channel sent by the client, the scheduling server selects a time-shifted media server that is closer to the user and is lighter in load according to the nearest and least-loaded scheduling policy, and provides time shifting to the user. Service, and return the address of the time-shifted media server to the client. The client requests the time-shifted service from the time-shifted media server according to the returned time-shifted media server address, and establishes a time-shifted service session with the time-shifted server.

It should be noted that, in the embodiment of the present invention, the media server supporting the time shift service also supports the live broadcast service by default.

In the media content scheduling method of the embodiment of the present invention, the system selects a part of the media server to record the time-shifted content. When the user selects the time-shift service of the current channel during the live broadcast of the channel, the client determines that the current media server cannot provide the content. During the time shift service, the time shifting media server capable of providing the time shift service is redirected by the dispatching server, and the time shifting media server provides the time shifting service to the user, thereby avoiding waste of storage resources caused by all the media servers recording the time shifting program. The problem.

FIG. 3 is a diagram showing a signaling interaction diagram of a media content scheduling method according to another embodiment of the present invention. As shown in FIG. 3, the media content scheduling method includes:

301. The user selects to play the live content;

302. The client sends a live broadcast request (RTSP DESCRIBE) to the scheduling server, where the RTSP DESCRIBE request message carries a live service identifier, such as carrying TimeShif t: 0;

303. The scheduling server parses the RTSP DESCRIBE request message initiated by the client, and determines that the client needs to request the live broadcast service. The scheduling server preferentially selects the live media server that does not perform channel recording according to the distribution of the live channel according to the principle of the nearest and the lightest load. Provide services, if there is no live media server available, you can choose to provide services for time-shifted media servers that support time-shifted services. The scheduling server returns a live request response message to the client, where the response message carries a Uniforma Resource Loca tor (URL) of the live media server that provides the live broadcast service.

404. The client establishes a live broadcast service session with the live media server according to the returned URL of the live media server.

Optionally, the client sends a live broadcast request (RTSP DESCRIBE) to the live media server according to the URL, and the RTSP DESCRI BE request message carries a live service identifier, such as carrying T i meSh ift: 0; the live media server returns a response to the client. The message, the response message may include whether the live media server supports the time shift state parameter of the time shift service of the channel, such as: Timeshif tS ta tus: 0, indicating Time-shifted services are not supported.

Optionally, the client initiates a play request to the live media server, and the play request carries

The Range parameter indicates that the live content is played, and the live media server sends the channel live media data to the client according to the play request.

305. During the live broadcast, the user selects a backward time shift operation for the current channel;

306. The client determines, according to the current live media server time-shift parameter, that the current live media server does not support the time-shift service, and disconnects the live broadcast service session with the current live media server.

307. The client establishes a new session with the scheduling server, and initiates a time shift service request (RTSP DESCRIBE) of the current channel to the scheduling server, and the RTSP DESCRIBE request message carries the time shift service identifier, such as carrying TimeShif t: 1;

308. After receiving the current channel time-shift service request sent by the client, the scheduling server selects a time-shifted media server that is closer to the user and has a lighter load to provide a time-shift service to the user according to the nearest and lightest-loaded scheduling policy. Returning the address URL of the time-shifted media server to the client;

309. The client sends a time shift request (RTSP DESCRIBE) to the time-shifted media server according to the returned media server address URL, and the RTSP DESCRIBE request message carries the time-shift service identifier, such as carrying TimeShi f t: 1;

309. The time-shifted media server returns a response message to the client, where the message includes time-shifting parameters of the time-shifted service of the current channel, such as Timeshif t-Sta tus: 1 indicating that the current channel is supported. Time shift service. Then, the client initiates a play request to the time-shifted media server, and the play request carries a Range play range parameter, a multiple parameter, and the like, and the time-shifted media server sends the current channel time-shifted media data to the client according to the play request of the client.

According to the media content scheduling method of the embodiment of the present invention, the IPTV system selects a media server with a higher popularity to record time-shifted content according to the user access heat of the channel content. When the user selects the live broadcast service, it is preferred to select only the live broadcast service. The media server provides services to the user. When the user selects the current channel time shift service during the live broadcast process, the client redirects to the time shift service through the dispatch server if it determines that the current live media server cannot provide the time shift service. A time-shifted media server that provides time-shifted services to users by the time-shifted media server. Therefore, the waste of the network storage resources caused by the recording of the time-shifted program by all the media servers is avoided, and the situation that some nodes are unable to provide the time-shifted service caused by the time-shifted program of only part of the media server is avoided, and the flexibility of the CDN system is improved. Sex and stability.

FIG. 4 is a diagram showing a signaling interaction diagram of a media content scheduling method according to another embodiment of the present invention. As shown in FIG. 4, the media content scheduling method includes:

401. The user selects to play the live content.

402. The client sends a live broadcast request (RTSP DESCRIBE) to the scheduling server, where the RTSP DESCRIBE request message carries a live service identifier, such as carrying TimeShi ft: 0;

403. The scheduling server parses the RTSP DESCRIBE request message initiated by the client, determines that the client needs to request the live broadcast service, and the scheduling server preferentially selects the live media server that does not perform channel recording to provide services for the user according to the nearest and the lightest load principle, if not available. The live media server can select a time-shifted media server that supports time-shifted services to provide services. The scheduling server returns a live request response message to the client, where the response message carries a Uniform resource locator (URL) of the time-shifted media server that provides the live broadcast service.

404. The client establishes a live broadcast service session with the time-shifted media server according to the returned time-shifted media server URL.

405. During the live broadcast, the user selects a backward time shift operation for the current channel;

406. The client determines, according to the current time shifting media server transition state parameter, that the current time shift media server supports the time shift service;

407. The client initiates a play request to the time shifting media server by using a live broadcast service session with the current time shift media server, where the play request carries a Range play range parameter, a multiple parameter, and the like; 408. The time shift media server is configured according to the client. The end play request sends the current channel time-shifted media data to the client.

FIG. 5 is a block diagram of a client structure according to an embodiment of the present invention. As shown in FIG. 5, the client includes: a session unit 501, a receiving unit 502, a determining unit 503, a processing unit 504, and a sending unit 505.

The session unit 501 is configured to establish a live broadcast service session with the first media server by using the scheduling of the scheduling server. The receiving unit 502 is configured to receive the live broadcast service session with the first media server after the session unit 501 is established. a time-shift service request of the current channel; the determining unit 503, configured to determine, according to the time-shift service request received by the receiving unit 502, whether the first media server supports the time-shift service of the current channel; the processing unit 504, configured to determine the first media server Current channel not supported When the service is time-shifted, the session with the first media server is disconnected; the sending unit 505 is configured to: when the processing unit 504 determines that the first media server does not support the current channel time-shift service, initiate a time-shift service to the scheduling server. The receiving unit 502 is further configured to receive a time shift service response from the scheduling server, where the time shift service response includes an address of a second media server that provides a time shift service to the current channel, and a session unit 501. And sending, by the second media server that provides the current channel time shift service, a time shift service request, and establishing a time shift service session with the second media server according to the second media server address returned by the scheduling server.

Optionally, the processing unit 504 is further configured to: when the determining unit determines that the first media server supports the time shift service, and uses the current live broadcast service session to send the current channel to the first media server by using the sending unit 505. Move the play request.

Optionally, the sending unit 505 is further configured to: initiate a live broadcast service request to the scheduling server; the receiving unit 502 is configured to receive, by the scheduling server, a response message that includes a first media server address that provides a live broadcast service; 501. The method is used to establish a live service session with the first media server according to the first media server address.

It should be noted that the client as described above may be a terminal such as a set top box or a smart phone, and may be used to execute the media content scheduling method as illustrated in FIG.

FIG. 6 is a structural block diagram of a media content scheduling system according to an embodiment of the present invention. As shown in FIG. 6, the media content scheduling system includes a client 601 as shown in FIG. 5, and a scheduling server 602, configured to receive a client live broadcast. The service request returns a response message to the client according to the client location and the media server load status, where the response message includes a first media server address that provides a live broadcast service, and is further configured to receive the current sent by the client. The time-shift service request of the channel returns a second media server address supporting the current channel time-shift service to the client; the media server 603 is configured to provide the media live broadcast or time-shift service to the client.

It should be noted that the media server 603 may include a live media server that provides only a live broadcast service and a time-shifted media server that supports time-shifted services, and the time-shifted media server also supports a live broadcast service.

Additionally, the media content scheduling system as described above can be used to perform the media content scheduling method as illustrated in Figures 2 through 4.

FIG. 7 is a schematic block diagram of a client according to another embodiment of the present invention. The embodiment of the present invention further provides an apparatus embodiment for implementing the steps and methods in the foregoing method embodiment. As shown in FIG. The subscriber terminal includes: at least one processor 701, such as a CPU, at least one communication interface 704 or other communication interface, memory 702, and at least one communication bus 705 for enabling session communication between the devices. The processor 701 is configured to execute an executable module stored in the memory, such as a computer program; the user terminal optionally further includes a user interface 703, including but not limited to a display, a keyboard, and a pointing device (eg, a mouse, a trackball (t rackba ll ), touch panel or touch display). The memory 702 may include a high speed RAM memory, and may also include a non-volatile memory, such as at least one disk memory. The communication session between the user terminal and at least one other computer is implemented by at least one network interface (which may be wired or wireless), and may use an Internet, a wide area network, a local network, a metropolitan area network, or the like.

The memory 702 can optionally include at least one storage device (e.g., an external storage device) located remotely from the CPU 701. In some embodiments, memory 702 stores executable modules or data structures as shown in Figure 5 above, or a subset thereof, or their extensions.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both, for clarity of hardware and software. Interchangeability, the composition and steps of the various examples have been generally described in terms of function in the above description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.

A person skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding processes in the foregoing method embodiments, and details are not described herein again.

In the several embodiments provided herein, it should be understood that the disclosed systems, devices, and methods may be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed. In addition, the mutual coupling or direct coupling or communication session shown or discussed may be an indirect coupling or communication session through some interface, device or unit, also It can be an electrical, mechanical or other form of conversation. The components displayed by the unit may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the embodiments of the present invention.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention contributes in essence or to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium. A number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM, Random Acces s Memory), a magnetic disk or an optical disk, and the like, which can store program codes. medium.

The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any equivalent person can be easily conceived within the technical scope of the present invention. Modifications or substitutions are intended to be included within the scope of the invention. Therefore, the scope of the invention should be determined by the scope of the claims.

Claims

Rights request

1. A media content scheduling method, characterized by including:

The client establishes a live broadcast service session with the first media server through the scheduling of the scheduling server;

Receive a time-shift service request of the current channel, and determine whether the first media server supports the time-shift service of the current channel;

If the first media server does not support the time-shift service of the current channel, disconnect the live service session with the first media server;

Initiate a time-shift service request for the current channel to the scheduling server;

Receive a time-shifted service response from the scheduling server, where the time-shifted service response includes the address of a second media server that provides time-shifted services for the current channel;

Send a time-shift service request to the second media server to establish a time-shift service session with the second media server.

2. The method according to claim 1, characterized in that, if it is determined that the first media server supports the time-shift service, then using the live broadcast service session with the first media server to send the message to the first media server. Send a time-shifted playback request.

3. The method of claim 1 or 2, wherein the client establishes a live broadcast service session with the first media server through scheduling by the scheduling server, including:

The client initiates a live broadcast service request to the scheduling server;

Receive a live broadcast service response returned by the scheduling server. The live broadcast service response includes the address of the first media server. The address of the first media server is determined by the scheduling server according to the location of the client and the load of the media server. Prioritize selection from media servers that do not record channels;

The client establishes a live broadcast service session with the first media server according to the address of the first media server.

4. The method of claim 3, wherein the live broadcast service response further includes a time-shifted state parameter of the first media server, and the time-shifted state parameter indicates whether the first media server supports the current Channel time shifting service;

Determining whether the first media server supports the time-shift service of the current channel is specifically: Determine whether the first media server supports the time-shift service of the current channel according to the time-shift state parameter of the first media server.

5. The method according to any one of claims 1 to 3, wherein the step of determining whether the first media server supports the time-shift service of the current channel is: based on the time shift of the first media server. The time-shifting parameter determines whether the first media server supports the time-shifting service of the current channel; the time-shifting parameter is sent to the client by the first media server during the process of establishing a live broadcast service session, so The time-shift state parameter indicates whether the first media server supports the time-shift service of the current channel.

6. The method of claim 1, wherein the second media server address is selected and determined by the scheduling server from media servers that perform channel recording based on the location of the client and the media server load.

7. The method of claim 3, wherein the first media server includes a live media server that only provides live broadcast services and a time-shift server that supports time-shift services, and the scheduling server records that only provides live broadcast services. The address of the live broadcast media server and the address of the time-shifted media server that supports the time-shift service.

8. A client, characterized by including:

The session unit is used to establish a live broadcast service session with the first media server through scheduling by the scheduling server;

A receiving unit, configured to receive a time-shifted service request of the current channel after the session unit establishes a live service session with the first media server;

A judging unit, configured to judge whether the first media server supports the time-shift service of the current channel according to the time-shift service request received by the receiving unit;

a processing unit, configured to disconnect the session with the first media server when the judgment unit determines that the first media server does not support the time-shift service of the current channel; a sending unit, configured to: when the processing unit determines that the first media server does not support the time-shift service of the current channel; When the media server does not support the time-shift service of the current channel, it initiates a time-shift service request of the current channel to the scheduling server;

The receiving unit is also configured to receive a time-shifted service response from the scheduling server, where the time-shifted service response includes the address of a second media server that provides time-shifted services for the current channel;

The session unit is also used to calculate the second media server address returned by the scheduling server, Send a time-shift service request to a second media server that provides time-shift service for the current channel, and establish a time-shift service session with the second media server.

9. The client of claim 8, wherein the processing unit is further configured to: when the judgment unit determines that the first media server supports the time-shift service, use the For a live broadcast service session, the sending unit sends a time-shift playback request of the current channel to the first media server.

10. The client as claimed in claim 8, characterized in that:

The sending unit is also used to initiate a live broadcast service request to the scheduling server;

The receiving unit is also configured to receive a response message returned by the scheduling server including the address of the first media server that provides the live broadcast service;

The session unit is configured to establish a live service session with the first media server according to the first media server address.

11. The client according to claim 10, wherein the response message received by the receiving unit also includes a time-shifting state parameter of whether the first media server supports time-shifting service for the current channel.

12. The client according to claim 10, wherein the receiving unit also receives feedback from the first media server during the process of establishing a live service session with the session unit and the first media server. Whether to support the time-shifting parameters of the current channel time-shifting service.

13. The client according to claim 11 or 12, wherein the determination unit is specifically configured to determine whether the first media server supports the time-shift service of the current channel according to the time-shift state parameter.

14. A media content scheduling system, characterized by including:

The client as described in any one of claims 8-13.

15. The media content scheduling system according to claim 14, further comprising: a scheduling server, configured to receive a client's live broadcast service request and return a request to the client according to the client's location and media server load. A response message, the response message includes the address of the first media server that provides the live broadcast service; it is also used to receive the time-shift service request of the current channel sent by the client, and return to the client a request that supports the time-shift service of the current channel. The second media server address; the first media server, used to provide channel live broadcast services to the client; The second media server is used to provide channel time-shifting service to the client.