Data reliable multicast method based on FDMA (frequency division multiple Access)/DAMA (demand assigned multiple access) satellite communication system

A satellite communication system and data technology, applied in the field of satellite communication, can solve the problems of poor adaptability of the actual system and achieve the effect of efficient satellite multicast transmission

Active Publication Date: 2013-02-06
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Scholars at home and abroad have done some research on satellite reliable multicast technology, but most of these technologies have not been integrat

Method used

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  • Data reliable multicast method based on FDMA (frequency division multiple Access)/DAMA (demand assigned multiple access) satellite communication system
  • Data reliable multicast method based on FDMA (frequency division multiple Access)/DAMA (demand assigned multiple access) satellite communication system

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Embodiment Construction

[0042] The following is attached figure 1 , 2 The preferred embodiments of the present invention are described, and it should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0043] The present invention comprises steps:

[0044] The object of the present invention is achieved in that a kind of data reliable multicasting method based on FDMA / DAMA satellite communication system is characterized in that comprising the following steps:

[0045] (1) Establish a forward broadband multicast channel from the central station to all remote stations. The central station divides the files to be sent into fixed-length data packets, fills in the verification information and numbers them in sequence, and passes through the forward broadband group broadcast channel, and send the length and number of data packets and data packets to each remote station in multicas...

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Abstract

The invention discloses a data reliable multicast method based on FDMA (frequency division multiple Access)/DAMA(demand assigned multiple access) satellite communication system. The data reliable multicast method based on FDMA/DAMA satellite communication system is applicable to a data transmission system of an FDMA/DAMA satellite communication network; aiming at the limited satellite communication system resources and the bidirectional broadcasting characteristics of a satellite, a communication flow combining multicast transmission and polling is provided, and the reliable and efficient satellite multicast transmission is realized.

Description

technical field [0001] The invention discloses a data reliable multicast method based on FDMA / DAMA (Frequency Division Multiple Access / Assignment on Demand) satellite communication system, relates to the technical field of satellite communication, and is especially used for solving the data reliable group in the FDMA / DAMA satellite communication system broadcast transmission problem. Background technique [0002] With the acceleration of the world's informatization process, the terrestrial Internet has developed rapidly, but most areas on the earth have not yet been covered by communication networks. Compared with the terrestrial communication network, the satellite communication network has the advantages of wide coverage, strong broadcasting ability, and less restricted by geographical conditions. As the supplement and backup of the terrestrial network, the satellite network has received more and more attention at home and abroad. The future Internet will be a comprehensi...

Claims

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Application Information

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IPC IPC(8): H04B7/185H04L12/761H04L45/16
Inventor 张亚生彭华尹波申曲张少峰可佳骆盼
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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