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浙江大学学报(工学版)
J4  2011, Vol. 45 Issue (2): 273-279    DOI: 10.3785/j.issn.1008-973X.2011.02.013
计算机技术     
无线传感网逐跳自适应FEC传输可靠性
保证方法
夏明, 董亚波, 鲁东明
浙江大学 计算机科学与技术学院,浙江 杭州 310027
Data transmission reliability assurance scheme based on
hop-by-hop adaptive FEC for wireless sensor networks
XIA Ming, DONG Ya-bo, LU Dong-ming
College of Computer Science and Technology, Zhejiang University, Hangzhou 310027, China
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摘要：

针对现有自适应前向纠错（FEC）方法在多跳无线传感器网络中无法保证端到端数据传输可靠性的问题,设计一种基于2级比例积分微分（PID）控制的FEC码率调整策略（RA-TP）,实现根据数据传输可靠性需求和当前通信质量状况自动优化FEC码率；提出逐跳自适应FEC数据传输可靠性保证方法（RAH）,将端到端数据传输可靠性需求平均分配到数据传输链路上的每一跳,并令每个节点使用RA-TP各自保证到下一跳节点的数据传输可靠性.测试结果表明,该方法在多跳网络中能够以较低的冗余数据传输开销保证端到端数据传输可靠性,有效改善实际数据传输速率.
Abstract:

Existing adaptive forward error correction (FEC) schemes can not guarantee end-to-end data transmission reliability in multihop wireless sensor networks. To address this problem, firstly, a FEC rate adjustment mechanism based on twolevel proportional-integral-derivative (PID) control (RA-TP) was designed to realize automatic FEC rate optimization according to the data transmission reliability requirement and current communication quality. Then, a data transmission reliability assurance scheme based on hop-by-hop adaptive FEC (RAH) was proposed. In this scheme, end-to-end data transmission reliability requirement is equally distributed to each hop on data delivery path, and each node will respectively ensure the data transmission reliability the next-hop node by using RA-TP. Evaluation results show that, comparing to existing schemes, the proposed scheme can ensure the end-to-end data transmission reliability with a much lower redundant data transmission overhead, thus greatly improves the effective data transmission rate.
出版日期: 2011-03-17
:  TP 293  
基金资助:

国家“973”重点基础研究发展计划资助项目(2006CB303000)；新世纪优秀人才支持计划资助NCET-04-0535).
通讯作者: 董亚波，男，副教授.     E-mail: ybdong@zju.edu.cn
作者简介: 夏明(1981—)，男，山东泰安人，博士生，主要研究方向为传感器网络协议设计和优化. E-mail:nmlab_xiaming@zju.edu.cn
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引用本文:

夏明, 董亚波, 鲁东明. 无线传感网逐跳自适应FEC传输可靠性
保证方法[J]. J4, 2011, 45(2): 273-279.

XIA Ming, DONG Ya-bo, LU Dong-ming. Data transmission reliability assurance scheme based on
hop-by-hop adaptive FEC for wireless sensor networks. J4, 2011, 45(2): 273-279.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2011.02.013    或    http://www.zjujournals.com/eng/CN/Y2011/V45/I2/273

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