效率感知的无线网络编码机制  

Efficiency-aware Localized Network Coding Mechanism for Wireless Networks

作　　者：王斌[1] 吴伟仁[1] 岩延[2] 张宝贤[2] 

机构地区：[1]中国科学院电子学研究所,北京100190 [2]中国科学院研究生院泛在与传感网研究中心,北京100049

出　　处：《电子与信息学报》2012年第1期69-74,共6页Journal of Electronics & Information Technology

基　　金：国家自然科学基金(60702074;60970137);国家科技重大专项(2010ZX03006-001-02)资助课题

摘　　要：网络编码在无线网络中的应用可以显著提高无线网络的吞吐量和容量。然而,当前大多数的无线网络编码机制在进行编码操作时,都没有考虑将不同长度的报文编码在一起时的效率问题。该文研究了在进行网络编码操作时如何获得最优的每字节编码效率,并设计了编码效率感知的无线网络编码机制(coDing Efficiency awarE Networkcoding,DEEN),以提升每字节的编码效率。模拟结果表明,DEEN协议能够有效地提升无线网络的容量。Localized network coding is a promising technique to improve the performance of a wireless multihop network when multiple concurrent unicast sessions are present in the network.However,most existing mechanisms in this field do not consider the issue that the potential diversity in packet size has a big impact on the coding efficiency.In this paper,the issue of achieving optimal per-byte coding efficiency via localized network coding is studied.An efficient localized network coding mechanism is designed to provide high per-byte coding efficiency.Simulation results show that the designed mechanism can greatly improve the network throughput as compared with existing mechanisms.

关 键 词：无线网络 网络编码 编码效率 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]