Method for conveying IP packet in broadcast network

An IP message and broadcast network technology, applied in the field of multimedia broadcasting or mobile TV, can solve the problems of low transmission efficiency, high overhead, and no consideration of compressed IP packet headers in TS mode.

Inactive Publication Date: 2009-01-21
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the first method, since the size of the TS packet is fixed, one IP packet is divided into one or more TS packets for transmission, and the last TS packet cannot be completely used up, there is a large amount of filling information, and the transmission efficiency of the TS method is relatively low
The second method, because the IP multicast packet header has 28 bytes, and the existing technology does not consider how to compress the IP packet header, and Mac address, etc., so the overhead is relatively large

Method used

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  • Method for conveying IP packet in broadcast network
  • Method for conveying IP packet in broadcast network
  • Method for conveying IP packet in broadcast network

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Embodiment Construction

[0023] The present invention realizes the method for transmitting IP message in the broadcast network, such as figure 2 As shown, a service channel (logical) conceptually corresponds to a channel, and the data of a channel is sent once within a fixed time interval, and the fixed time interval may be one second or other time values.

[0024] If a service channel is used to implement the function of transmitting IP packets, the service channel generally does not include video segments and audio segments, but only includes subframe headers and data segments. The subframe header mainly contains some control information, mainly including: the length of the subframe header, the length of the video segment, the length of the audio segment, the length of the data segment, and CRC.

[0025] Such as image 3 As shown, a data segment is composed of a data segment header and N data units. The data segment header includes: the total number of data units, the data type, the length of eac...

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Abstract

The present invention provides an IP message transmission method of broadcasting network, which can be used for effectively completing IP-based business in the multi-media broadcasting network, such as browsing, games and so on. In the method, the Mac address, IP and UDP header, and IP data payload are packaged in an IP load; the Mac address indication and IP header compression indication are packaged in an IP block head; the IP block head, the IP load and the CRC are packaged in a data unit; the length and the type of each data unit are recorded in a data segment head; a plurality of data units are packaged in the data segment; the data segment and other data to be transmitted are packaged and transmitted in a business channel; the terminal extracts each data unit after receiving the data segment, according to the length of each data unit in the head; the IP, the UDP header and the IP payload are extracted from the data unit so as to acquire the IP message. The length of the Mac address can be changed; the IP header can be compressed for transmission, thus the transmission efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of multimedia broadcasting or mobile TV, and in particular relates to a method for transmitting IP messages in a multimedia broadcasting network. Background technique [0002] Mobile multimedia broadcasting is a multimedia playback technology that has emerged in recent years. With a handheld terminal, you 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 as to receive the multimedia data of the selected channel, so as to watch TV on the mobile terminal. [0003] The air data transmitted by the system is divided into different channels, and 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] Transmitting data in the broadcast network can realize applic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L12/06H04L45/16
Inventor 沈灿江华童登金戴志军王志英
Owner ZTE CORP
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