Method for realizing advanced sending of mobile multimedia broadcast contrul list updating indication information

Abstract

The method includes steps: (1) setting up indication of preact for updating sequence number of control table (SNCT) in multiplexing frame head in mobile multimedia broadcast to indicate that updating SNCT in multiplexing frame head is sent in advance for several frames of broadcast channel; (2) when control table is changed, based on indication of preact for updating SNCT, front end side stores information of control table to be changed in buffer; updating SNCT in advance, and sending the changed control table fetched from the buffer to terminal in corresponding subsequent broadcast channel frames; (3) based on indication of preact for updating SNCT in multiplexing frame head, and corresponding updating indication of updating SNCT, the terminal waits and receives control table from specific frame of broadcast channel, and updates information of corresponding control table. Based on updated control information, terminal receives and processes broadcast service of mobile multimedia.

Description

technical field [0001] The invention relates to the field of digital mobile communication, in particular to a method for realizing the early broadcast of the update indication information of the mobile multimedia broadcast control table. Background technique [0002] In recent years, digital mobile multimedia broadcasting technology and standards have developed rapidly, such as DVB-H (Digital Video Broadcasting Handheld Receiver: Digital Video Broadcast Handheld) in Europe, MediaFLO (Media Single Forward Link: Media Forward Link Only) in the United States and China Mobile Multimedia Broadcasting CMMB (China Mobile Multimedia Broadcasting), etc., provides many service contents for its end users, such as advertisements, weather forecasts, news, sports programs, variety shows, multimedia radio dramas, movies and other programs, users can choose according to their hobbies Service programs for mobile multimedia broadcasting. [0003] CMMB technology is the latest developed mobil...

AI Technical Summary

Problems solved by technology

[0003] CMMB technology is the latest mobile multimedia broadcasting technology. It uses time division to send multimedia broadcasting services. The duration of each broadcast channel frame is 1 second and consists of 40 time slots of 25 milliseconds. One or more time slots can transmit a The data encapsulated in the broadcast multiplexing frame is transmitted separately from the control information and the media stream. The first multiplexing frame encapsulates the control information composed of multiple control tables, which corresponds to the first time slot of the broadcast channel frame. Other multiplexed frames encapsulate broadcast multimedia service data. The multiplexed frame is composed of multiplexed frame header, multiplexed payload and padding. Description of the overhead information in multiplexing frames. Since the control table information rarely changes or the change cycle is very long, in order to reduce the power consumption of the mobile multimedia broadcasting terminal, the terminal does not need to receive and process the control table information every second frame, but when the control table information When changing, the mobile multimedia broadcasting front-end side needs to notify the terminal in advance, and the terminal receives and processes the updated control table in the subsequent broadcast channel frame, so it is necessary to provide an implementation in the mobile multimedia broadcasting system to broadcast the update instruction information of the control table in advance method to ensure that the terminal receives the updated control table information in time

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