WO2008141502A1

WO2008141502A1 - Method of realizing multimedia broadcasting or multicasting service rebroadcasting

Info

Publication number: WO2008141502A1
Application number: PCT/CN2007/003674
Authority: WO
Inventors: Meiping Liu
Original assignee: Zte Corporation
Priority date: 2007-05-24
Filing date: 2007-12-19
Publication date: 2008-11-27
Also published as: CN101052143A; CN101052143B

Abstract

A method of realizing multimedia broadcasting or multicasting service rebroadcasting is disclosed, which includes the steps : S202, the broadcasting or multicasting center adds the rebroadcasting message to the service guideline, and manages the rebroadcasting message in the service guideline according to the requests and notices the rebroadcasting message to the terminal through the service guideline, S204, the broadcasting or multicasting center obtains the multimedia content from the content provider according to the service guideline, and stores the multimedia content locally when the multimedia content need to be rebroadcasted, and S206, the broadcasting or multicasting service center sends the multimedia content to the terminal one or more times according to the service guideline. The solution realizes the function of rebroadcasting the content time and again by receiving the content one time in the BM-SC, saves the network resources between the BM-SC and the content provider.

Description

TECHNICAL FIELD The present invention relates to the field of communications, and more particularly to a method for implementing multimedia broadcast or multicast service replay. BACKGROUND OF THE INVENTION Multimedia Broadcasting/Multicasting Service (MBMS) is a point-to-multipoint service for implementing a data source to send data to multiple users. MBMS not only enables plain text low-rate message-like multicast and broadcast, but also enables multicast and broadcast of high-speed multimedia services. Multicast and broadcast services based on WCDMA/TD-SCDMA/GSM (Wideband Code Division Multiple Access/Time Division-Code Division Multiple Access/Global System for Mobile Communications) packet network, by adding new functional entities (such as broadcast groups) Broadcast Service Center (BM-SC), for existing packet domain functional entities (such as Serving Gateway General Packet Radio Service (GPRS) Support Node (SGSN:), Gateway General Packet Radio Service (GPRS) Support Node (GGSN), Wireless Network The controller (RNC) / base station controller (BSC), and user equipment (UE) add MBMS functions, and define a new logical shared channel to implement air interface resource sharing. Figure 1 shows a network reference model of MBMS. The Broadcast/Multicast Center (BM-SC) is connected to the Gateway General Packet Radio Service (GPRS) support node GGSN through the Gmb interface and the Gi port. One BM-SC can be connected to multiple GGSNs, and the GGSN is connected to the Gn/Gp interface. The monthly service GRPS node SSGN is connected, one GGSN can be connected to multiple SGSNs, and the SGSN can pass the Iu interface and the Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (UTRAN) Then, UTRAN is connected to the mobile terminal through the Uu interface, and the SGSN can also be connected to the Global System for Mobile Communications (GSM) Enhanced Radio Access Network (GERAN) through the Iu/Gb interface, and the GERAN is connected to the mobile terminal through the Um interface. The process of broadcasting services includes: 1) User subscription process (Subscription). The process in which a user subscribes to a multicast service and establishes a relationship between the user and the service provider.

2) The service announcement process (Announcement s informs the user of the process by which the service provider can provide ^{11 of} those services, as well as other business-related information. 3) User join process (Joining). The process of a user requesting to join a multicast network to a service network.

4) Session Start, the process by which the BM-SC is ready to send data. When the BM-SC is ready to transmit data, the BM-SC initiates the MBMS session start process. This is the request to activate the transmission of MBMS data, all the bearer resources required by the network. And notify the interested UE that the data transmission will begin.

5) Notification process ( Notification ). The RNC informs the user of the process in which MBMS multicast starts immediately.

6) Data transfer process. The process of transmitting user multimedia data.

7) Session End Process ( Session Stop ). The BM-SC indicates the end of the session and releases the process of carrying the resources.

8) Leaving process. The user is not ready to receive multimedia broadcasts and leave the multicast group. The difference between the user receiving the multimedia broadcast and the multicast service flow is that the user who does not have the multicast service in the broadcast service joins and the user leaves the process, and the other processes are the same. Whether it is a multimedia broadcast service or a multimedia multicast service, it is generally not finished once the broadcast is finished, but will be repeated several times. If popular sports events and entertainment programs are broadcast live, they will be replayed many times on the same day, the next morning, or a little later. Of course, there are also cases where the live broadcast is repeated after a long live broadcast. Multimedia broadcast/multicast content providers are divided into national content providers and local content providers. Local content providers are typically local, providing multimedia broadcast/multicast services to users in the area. National content providers are generally offsite, and of course a few national content providers are not excluded. According to the existing multimedia broadcast/multicast implementation, if the content provider wants to replay a certain multimedia content multiple times, the BM-SC needs to obtain the multimedia content from the content provider multiple times, and through the multimedia broadcast/multicast. The network was issued several times. Replay n times, it takes n times to occupy the bandwidth between the BM-SC and the content provider. Since multimedia broadcast/multicast is a service that is very much a network resource, even if the bandwidth is large, it is very meaningful to save network resources. SUMMARY OF THE INVENTION In view of one or more of the problems described above, the present invention discloses a method for implementing multimedia broadcast or multicast service replay. The method for implementing multimedia broadcast or multicast service replay according to the present invention includes the following steps: S202: A broadcast or multicast center adds replay information to a service guide, and manages replay information in the service guide according to requirements and passes the service. The guide informs the terminal to replay the information; S204, the broadcast or multicast center acquires the multimedia content from the content provider according to the service guide, stores the multimedia content locally if the multimedia content needs to be replayed; and S206, the broadcast or multicast center according to the service The guide sends the multimedia content to the terminal one or more times. In step S202, the broadcast or multicast center manages the replay information in the service guide in at least one of the following ways: adding replay information to the specified multimedia content; modifying the replay information; and deleting the replay information. The replay information includes replay time. The broadcast or multicast center uses the schedule of the replay time corresponding to the multimedia content as additional information of the service guide. And in step S202, the replay information is used as sub-information in the multimedia content in the service guide. When the service guide is delivered, the same multimedia content including the replay information may be repeatedly presented. In step S204, the broadcast or multicast center periodically queries the service guide, and obtains the multimedia content from the content provider in advance according to the service guide, and saves the multimedia content to the local if the received multimedia content needs to be replayed. In step S204, if the content provider actively provides the multimedia content, the broadcast or multicast center query service guide determines whether the multimedia content needs to be replayed, and saves the multimedia content locally if the replay is required. In step S206, the broadcast or multicast center periodically queries the service guide and establishes a multimedia broadcast or multicast session for the multimedia content that needs to be replayed according to the service guide to send the multimedia content to the terminal at the replay time. The charging process for the replayed multimedia content is the same as the charging process for the first transmitted multimedia content. With the present invention, the content can be re-broadcasted multiple times by receiving the content once in the BM-SC, thereby saving network resources between the BM-SC and the content provider. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are set to illustrate,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, In the drawings: FIG. 1 is a schematic diagram of a conventional MBMS network structure; FIG. 2 is a flowchart of a method for implementing multimedia broadcast or multicast service replay according to an embodiment of the present invention; FIG. 3 is a diagram according to an embodiment of the present invention. A flowchart of a process in which a broadcast multicast center acquires multimedia content from a content provider; and FIG. 4 is a flowchart of a process of a broadcast multicast center for replay according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings. Referring to FIG. 2, a method for implementing multimedia broadcast or multicast service replay according to an embodiment of the present invention is illustrated. As shown in FIG. 2, the method for implementing multimedia broadcast or multicast service replay includes the following steps: S202: A broadcast or multicast center adds replay information to a service guide, and manages replay information in the service guide as needed. And notifying the terminal to replay the information through the service guide; S204, the broadcast or multicast center acquires the multimedia content from the content provider according to the service guide, stores the multimedia content locally when the multimedia content needs to be replayed; and S206, broadcast or multicast The center sends the multimedia content to the terminal one or more times according to the business guide. In step S202, the broadcast or multicast center manages the replay information in the service guide in at least one of the following ways: adding replay information to the specified multimedia content; modifying the replay information; and deleting the replay information. The replay information includes replay time. The broadcast or multicast center uses the schedule of the replay time corresponding to the multimedia content as additional information of the service guide. And in step S202, the replay information is used as sub-information in the multimedia content in the service guide. When the service guide is delivered, the same multimedia content including the replay information may be repeatedly presented. In step S204, the broadcast or multicast center periodically queries the service guide, and according to the service guide. The multimedia content is obtained in advance from the content provider, and the multimedia content is saved locally if the received multimedia content needs to be replayed. In step S204, if the content provider actively provides the multimedia content, the broadcast or multicast center query service guide determines whether the multimedia content needs to be replayed, and saves the multimedia content locally if the replay is required. In step S206, the broadcast or multicast center periodically queries the service guide and establishes a multimedia broadcast or multicast session for the multimedia content that needs to be replayed according to the service guide to send the multimedia content to the terminal at the replay time. The charging process for the replayed multimedia content is the same as the charging process for the first transmitted multimedia content. That is to say, in this embodiment, the information is managed by the MBMS service announcement (referred to as the service guide), and the multimedia broadcast/multicast content that needs to be replayed is added by the service guide information of the content in the service guide. Replay the time schedule to implement the replay. It also provides modifications, additions, and deletions to the replay time. When the receiving content provider actively delivers the multimedia broadcast/multicast content, the BM-SC determines whether it needs to be replayed according to the service guide, in addition to the first transmission according to the service guide, and if the replay is required, saves the multimedia multicast/ Broadcast content, if existing replay is not required, retains the existing processing. After the BM-SC determines that the multimedia broadcast/multicast needs to be sent after n times according to the service guide, the BM-SC obtains the multimedia broadcast/multicast content from the content provider, except for the normal one-time transmission, according to the service guide. Determine if replay is required, and if necessary, save the multimedia content. The BM-SC periodically queries the service guide. For content that needs to be replayed after n times (n is usually a few minutes), a multimedia tongue broadcast/multicast is established to ensure that the multimedia content is sent in time when the replay time expires. The following table is the replay information management table in the Service Guide. Each multimedia content that needs to be replayed already has a record in the service guide. The BM-SC service guide system provides an operational interface to manage the replay of multimedia content (including adding replay information, editing replay time, or deleting replay information). In order to avoid duplicate records, the replayed information is added to the original record of the multimedia content.

Added parameter parameter type

Unsignedlnt

Replay times

Unsignedlnt

Replay start time [0]

Unsignedlnt

Replay end time [1] Unsignedlnt

...

Unsignedlnt

Replay Start Time [n-1] Next, with reference to FIG. 3, a process in which a broadcast multicast center acquires multimedia content from a content provider in a method for realizing multimedia broadcast or multicast service replay according to an embodiment of the present invention will be described. As shown in Figure 3, the process includes the following steps:

S302. The BM-SC sets each multimedia content in the timer timing scanning service guide that has not been sent any.

S304. Determine whether the S302 needs to perform the first time to send the multimedia service after n time.

S306. If the determination in S304 is yes, the BM-SC acquires the multimedia content from the content provider.

S308, performing the first delivery process on the content. The delivery of the multimedia content is performed according to whether the content is multicast or broadcast, and related processes such as session establishment, data transmission, and session termination are performed.

S310, in the business guide to determine whether a replay is required.

S312. If replay is required, save the entire content of the multimedia to the local storage device of the BM-SC, otherwise it ends. For the case where the content provider actively pushes the content to the BM-SC, the above S302, S304, and S306 are changed to the BM-SC to actively receive the multimedia content. If the service needs to start to be sent soon according to the service guide, then S312 is known according to S308. The steps are issued. Otherwise, according to the service guide, the multimedia content needs to be stored first, and then when the multimedia content needs to be sent, it is taken out from the storage device for transmission, and the sending method is similar to the replaying process. Referring to FIG. 4, a process of a broadcast multicast center for replay in a method for implementing multimedia broadcast or multicast service replay according to an embodiment of the present invention will be described. As shown in Figure 4, the process includes the following steps:

S402. The BM-SC sets each multimedia content in the timer timing scanning service guide that has not been sent any. S404. Determine whether the S402 scans the multimedia service that needs to be replayed after the n time. S406. If the determination in S404 is yes, the BM-SC obtains the entire multimedia content that needs to be replayed from the local storage device according to the multimedia content identifier in the service guide.

S408: Perform replay processing on the content. The replay of the multimedia content is performed according to whether the content is multicast or broadcast, and related processes such as session establishment, data transmission, and session termination are performed. The charging of the replayed content is exactly the same as the charging of the first transmission of the multimedia content.

S410. Determine, according to the service guide, whether it is the last replay.

S412, if it is the last replay, delete the entire content of the multimedia from the local storage device of the BM-SC, otherwise it ends.

S402 and S302 have the same function and function, so they can be combined. In summary, the present invention realizes the function of replaying the content multiple times by receiving the content once in the BM-SC, thereby saving network resources between the BM-SC and the content provider. The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

A method for implementing multimedia broadcast or multicast service replay, characterized in that it comprises the following steps:

S202. The broadcast or multicast center adds the replay information to the service guide, manages the replay information in the service guide according to the need, and informs the terminal of the replay information by using the service guide.

S304. The broadcast or multicast center acquires multimedia content from a content provider according to the service guide, and stores the multimedia content locally if the multimedia content needs to be replayed;

S206. The broadcast or multicast center sends the multimedia content to the terminal one or more times according to the service guide. The method for implementing the replay of the multimedia broadcast or the multicast service according to claim 1, wherein in the step S202, the broadcast or multicast center performs at least the following replay information in the service guide: Management of one way:

Add replay information for the specified multimedia content;

Modifying the replay information;

The replay information is deleted. The method for implementing multimedia broadcast or multicast service replay according to claim 2, wherein the replay information includes a replay time. The method for implementing multimedia broadcast or multicast service replay according to claim 3, wherein the broadcast or multicast center uses a schedule of replay time corresponding to the multimedia content as an additional to the service guide. information. The method for implementing multimedia broadcast or multicast service replay according to claim 3, wherein in the step S202, the replay information is used as sub information in the multimedia content in the service guide. .

The method for implementing the multimedia broadcast or the multicast service replay according to claim 3, wherein, in the step S202, when the service guide is delivered, the same one may be repeatedly presented to include the replay Multimedia content of information.

The method for implementing multimedia broadcast or multicast service replay according to any one of claims 4 to 6, wherein in the step S204, the broadcast or multicast center periodically queries the a service guide, and pre-acquiring the multimedia content from the content provider according to the service guide, and saving the multimedia content to the local if the received multimedia content needs to be replayed.

The method for implementing multimedia broadcast or multicast service replay according to any one of claims 4 to 6, wherein in the step S204, the content provider actively provides the multimedia content In case, the broadcast or multicast center queries the service guide to determine whether the multimedia content needs to be replayed, and if the replay is required, the multimedia content is saved locally.

The method for implementing multimedia broadcast or multicast service replay according to any one of claims 4 to 6, wherein in the step S206, the broadcast or multicast center periodically queries the The service guide establishes a multimedia broadcast or multicast for the multimedia content that needs to be replayed according to the service guide to send the multimedia content to the terminal at the replay time.

10. The method for implementing multimedia broadcast or multicast service replay according to claim 9, wherein the charging process for the replayed multimedia content is the same as the charging process for the first transmitted multimedia content. .