Huawei Technologies Co., Limited

Zte Corporation

Zhuo Sang

Xiaoqian Chai

Kepeng Li

Zhibin Li

Xiaoyi Dong

Qinwei Zhang

Provided are a method, an apparatus, and a system for rapid acquisition of multicast realtime transport protocol sessions. The method comprises the following steps executed by a unicast server: receiving multicast rapid acquisition control request signalling sent by a media client, wherein the control request signaling contains synchronization request information; determining data synchronization of the media client according to the synchronization request information in the control request signaling; determining synchronization response information according to the time difference between play time of a stored random access point and the current time, wherein the synchronization response information contains play speed information and play duration of unicast media stream; generating multicast rapid acquisition control response signaling, wherein the control response signaling contains synchronization response information and multicast acquisition information; unicasting the control response signaling and stored media stream to the media client. With the invention, the media client that lags more can play lagged media stream with a faster play speed and thus synchronization of video play picture between different media clients can be achieved.

Method, apparatus and system for rapid acquisition of multicast realtime transport protcol sessions

The present invention relates to Mobile Broadcast Multicast technologies, and discloses a method for subscribing a purchase item in Mobile Broadcast Multicast Service, so that the subscription operation and update operation of the purchase item in BCAST are simplified, and the utilization of system resources is improved. In the present invention, a subscription management module generates a PurchaseItem identification, and sends this identification to a service distribution and adaptation module. Therefore, the PurchaseItem identification may be included in a PurchaseItem fragment sent to a user terminal from the service distribution and adaptation module. And, the function of identifying the purchase item is separated from the PurchaseItem fragment identification. Through sending a service request including the PurchaseItem identification to the subscription management module by the user terminal, the subscription of the purchase item is accomplished. The subscription management module manages service information of the purchase item based on the PurchaseItem identification. A device for implementing the above method is also disclosed in the present invention.

Method and system for subscribing a purchase item in mobile broadcast multicast service

A method and a system for distributing a mobile broadcast service are provided. The method includes: adding header information into broadcast service contents, the header information comprising integrality information and version information of a service packet containing the broadcast service contents; distributing the service packet to a user terminal; updating or accepting, by the user terminal, its own service data by use of the service packet in accordance with the integrality information and version information of the service packet. The method and the system according to the embodiments in the present invention may bring about higher transmission efficiency of data packet.

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Shenzhen, China

Zhuo Sang