DYNAMIC TIME WINDOW AND BUFFER MECHANISM IN HETEROGENEOUS NETWORK TRANSMISSION

摘要

The present invention provides a dynamic time window and buffer mechanism in heterogeneous network transmission. The method directs at the existing signaling in an MMT, attributes of Available_Time and Asset_Size of a media content are added in the signaling or other places, so that a client terminal is able to know the time when the corresponding media content is available and the size of the media content; at the same time, the client terminal determines the network bandwidth of the current broadband network and the network delay for a content from the broadband to the client terminal, and through the acquirable time of a broadband source content and the delay of the broadband channel, the client terminal calculates the time interval for transmitting a request for buffering in advance and the buffer window size needed by the terminal. The present invention solves the problem that contents composed by broadcast and broadband in a heterogeneous terminal cannot be synchronized due to broadband congestion, and also reduces the extra overhead of the client terminal due to the buffering.