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Method for realizing file downloading in broadcasting network

A file download and broadcast network technology, applied in the field of multimedia broadcasting or mobile TV, can solve the problems of incomplete use, high overhead, low transmission efficiency, etc. Effect

Inactive Publication Date: 2009-07-08
ZTE CORP
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  • Summary
  • Abstract
  • Description
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Problems solved by technology

In the first method, because the size of the TS packet is fixed, a piece of data is divided into multiple TS packets for transmission, and the last TS packet is often not completely used up, and there is a large amount of filling information, so the transmission efficiency of the TS method is relatively low; The second method, because the IP multicast header has 28 bytes, the overhead is relatively large

Method used

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  • Method for realizing file downloading in broadcasting network
  • Method for realizing file downloading in broadcasting network

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Embodiment Construction

[0021] The method for realizing file download of the present invention is to divide a file into multiple small blocks, encapsulate them in multiple data units, and encapsulate the multiple data units in one service channel for transmission. A business channel corresponds to a channel, and a channel sends data once within a fixed time interval, and the fixed time interval can be 1 second or other time values.

[0022] figure 1 It is a schematic diagram of the transmission of the method file in the service channel of the present invention. If one service channel is used to realize the file download function, then there is no video data and audio data in this service channel, but only packet header, data segment header, and N data units.

[0023] The packet header mainly contains some control information, and the packet header mainly includes: packet header length, video data segment length, audio data segment length, data segment length, CRC (cyclic check code), etc.

[0024] ...

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Abstract

A method for realizing file download in a broadcast network, comprising the following steps: (1) dividing a file into multiple file blocks and encapsulating them in multiple data units respectively; (2) encapsulating the multiple data units in one service channel In transmission, one service channel corresponds to one multimedia broadcasting channel. The service channel includes a packet header, a data segment header, and the multiple data units, wherein the data units are variable in length, and each data unit includes a data unit header, a data payload, and a cyclic checksum, without filling data. The invention adopts a variable-length encapsulation method, has small header overhead, high flexibility, high efficiency, and has a fault-tolerant mechanism and strong anti-error capability.

Description

technical field [0001] The invention belongs to the technical field of multimedia broadcasting or mobile phone television, and in particular relates to a method for realizing file download in a multimedia broadcasting network. Background technique [0002] Mobile multimedia broadcasting is a multimedia playback technology that has emerged in recent years. Through a handheld terminal, one can watch TV while moving at high speed. The terminal receives the program list through the wireless protocol, and can select the channel it has the right to watch, so that it can receive the multimedia data of the selected channel, and realize watching TV on the mobile terminal. [0003] The air data transmitted by the system is divided into different channels. The data of each channel includes three types: video, audio and data. The terminal can receive the relevant data, and realize the normal broadcasting of the TV through the player on the terminal. [0004] The data is used to impleme...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/00H04L29/06
Inventor 沈灿王志英文海龙姚清华
Owner ZTE CORP
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