Layered transmission based hybrid ARQ scheme for satellite networks

Computer Engineering and Applications ›› 2011, Vol. 47 ›› Issue (31): 86-90.

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Layered transmission based hybrid ARQ scheme for satellite networks

LU Lining，YU Yucai，LIU Chunqing

Beijing Institute of Satellite Information Engineering，Beijing 100086，China

Received:1900-01-01 Revised:1900-01-01 Online:2011-11-01 Published:2011-11-01

一种卫星网络中基于分层传输的混合ARQ机制

路利宁，余玉材，刘纯青

北京卫星信息工程研究所，北京 100086

Abstract

Abstract: As the satellite network characteristics of long propagation delay and receiver heterogeneity，hybrid ARQ scheme can not be directly applied to satellite network.To adapt the characteristics of satellite network，a new hybrid ARQ scheme is proposed.RSE coding is adopted to recover package losses.Receivers are classified according to their package loss rate，then a layered transmission method is proposed.With this method，receivers can choose to join one or more transmission layers to receive redundancy packages.Thus system efficiency would not be affected by receivers with high package loss rate.Performance evaluation by simulations shows that comparing other reliability assurance schemes，the new hybrid-ARQ scheme achieves better throughput efficiency and scalability.

Key words: hybrid ARQ scheme, RSE coding, layered transmission, heterogeneous receivers

摘要： 由于卫星链路的长时延和接收端异质性的特点，混合ARQ机制并不适合直接应用于卫星网络。为了适应卫星网络的特点，设计了一种新的混合ARQ机制。RSE编码被用来恢复接收端的错误。发送端利用接收端的反馈信息对接收端分类，根据分类的结果将补包数据分层传输。接收端选择加入一个或多个发送层次以接收足够数量的冗余数据。此时，接收端可以快速接收到其需要的补包数据，从而避免了由于接收端异质性而引起的系统效率降低。仿真结果表明，改进的混合ARQ机制相比于传统的可靠性保证机制具有更好的吞吐效率和网络可扩展性。

关键词: 混合ARQ机制, RSE编码, 分层传输, 接收端异质性

LU Lining，YU Yucai，LIU Chunqing. Layered transmission based hybrid ARQ scheme for satellite networks[J]. Computer Engineering and Applications, 2011, 47(31): 86-90.

路利宁，余玉材，刘纯青. 一种卫星网络中基于分层传输的混合ARQ机制[J]. 计算机工程与应用, 2011, 47(31): 86-90.

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Layered transmission based hybrid ARQ scheme for satellite networks

一种卫星网络中基于分层传输的混合ARQ机制

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