基于多个无线信道的自适应联合选择重发ARQ  

Adaptive Joint Selective Repeat ARQ for Multiple Wireless Channels

作　　者：戴云[1] 孙军[1] 杜伟娜[1] 

机构地区：[1]上海交通大学电子工程系图像通信与信号处理研究所,上海200030

出　　处：《计算机工程与应用》2005年第16期156-158,181,共4页Computer Engineering and Applications

摘　　要：文章提出了一种基于多个马尔可夫信道的自适应联合选择重发ARQ协议。这个协议可以根据参与数据传输的信道的状态好坏来动态地排列这些信道,把重要的数据分配给状态比较好的信道。文中信道的状态采用马尔可夫链的形式来模拟和预测。仿真结果表明,这种协议在数据包的迟延和迟延的抖动方面,优于使用循环方式排列信道的ARQ协议。如果反馈信道不可靠,多重应答可以保护应答信息免遭破坏,相对单独应答而言可以提供吞吐量。自适应联合选择重发ARQ和多重应答结合,可以成为未来的无线网络上数据传输协议的重要组成部分。This paper proposes an Adaptive Joint Selective Repeat ARQ protocol for multiple wireless Markov channels.This protocol dynamically arranges these channels according to their states.These states are predicted using the transfer matrixes of these Markov channels.Simulation results show that this protocol outperforms round-robin ARQ protocol in packet delay and jitter of delay.When acknowledgement channels have errors,Multiple Acknowledgement can protect acknowledgement packets from being destroyed.So throughput of Multiple Acknowledgement protocol can overwhelm that of Single Acknowledgement protocol in simulation.Adaptive Joint Selective Repeat ARQ,together with Multiple Acknowledgement,can serve future wireless networks as radio link protocol.

关 键 词：选择重发ARQ 数据传输 马尔可夫链路 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]