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IP transmission method and system based on DTMB

A transmission method and technology of transmission stream, applied in the field of DTMB-based IP transmission method and system, to achieve good coverage effect

Active Publication Date: 2019-07-12
ACADEMY OF BROADCASTING SCI STATE ADMINISTATION OF PRESS PUBLICATION RADIO FILM & TELEVISION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a DTMB-based IP transmission method and system to solve the problem of how to make full use of radio and television transmission in the prior art

Method used

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  • IP transmission method and system based on DTMB
  • IP transmission method and system based on DTMB
  • IP transmission method and system based on DTMB

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Embodiment I

[0053] The IP data packet LLC encapsulation / decapsulation of the embodiment of the present invention specifically includes:

[0054] After the IP service flow is encapsulated by LLC, it is uniformly carried on the IP tunnel on the DTMB. When multiple IP service flows are transmitted in IP tunnels on multiple physical transmission links, the MTU size of the selected physical transmission link needs to be adapted. Therefore, LLC Encapsulation needs to support adaptive split and join operations for LLC payloads. The LLC encapsulation format of the embodiment of the present invention is as follows image 3 shown.

[0055] The LLC realizes segmentation and connection operations through the sequence number and fragmentation number fields of the frame format, and realizes the re-segmentation function through the re-segmentation identifier and the re-segmentation field of the retransmission sequence number.

[0056] In the embodiment of the present invention, the LLC frame header fo...

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PUM

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Abstract

The invention discloses an IP (Internet Protocol) transmission method and system based on DTMB (Digital Terrestrial Multimedia Broadcasting), which are used for supporting downlink IP packets bearingmultiple users in a broadcast service frame transmitted by the DTMB through message format expansion and realizing better coverage of service transmission. That is to say, the downlink IP service packet is transmitted by means of the DTMB physical transmission channel of the broadcast television, so that the application of the terrestrial digital television under the IP service transmission is realized, and the problem of multi-service bearing based on the broadcast television is solved.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a DTMB-based IP transmission method and system. Background technique [0002] With the rapid development of the Internet era, higher requirements are put forward for the rapid transmission of information transmission, and how to allocate the use of the network more reasonably has become an urgent problem that needs to be solved now. As we all know, the radio and television spectrum has the advantages of wide coverage and deep coverage, but it is possible and necessary to make full use of radio and television to carry multiple services without affecting the transmission of digital television broadcasts. Contents of the invention [0003] The invention provides a DTMB-based IP transmission method and system to solve the problem of how to make full use of radio and television transmission in the prior art. [0004] On the one hand, the present invention provides a kind of I...

Claims

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Application Information

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IPC IPC(8): H04N21/236H04N21/434H04N21/643H04N21/647
CPCH04N21/23605H04N21/4343H04N21/64322H04N21/64738
Inventor 李继龙施玉海张翀王丽
Owner ACADEMY OF BROADCASTING SCI STATE ADMINISTATION OF PRESS PUBLICATION RADIO FILM & TELEVISION
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