Congestion avoidance, detection and alleviation in wireless sensor networks  

作　　者：Wei-wei FANG Ji-ming CHEN Lei SHU Tian-shu CHU De-pei QIAN 

机构地区：[1]Sino-German Joint Software Institute, School of Computer Science, Beihang University, Beijing 100191, China [2]State Key Laboratory of Industrial Control Technology, Zhejiang University, Hangzhou 31002 7, China [3]Digital Enterprise Research Institute, National University of Ireland, Galway, Ireland

出　　处：《Journal of Zhejiang University-Science C(Computers and Electronics)》2010年第1期63-73,共11页浙江大学学报C辑（计算机与电子（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (Nos. 60673180, 90412011 and 90612004);the International Science and Technology Cooperative Program of China (No. 2006DFA11080);the Research Program of Federal Ministry of Education and Research of Germany (No. 01BU0680);the Lion Project of Science Foundation of Ireland to Lei Shu (No. SFI/08/CE/ I1380)

摘　　要：Congestion in wireless sensor networks (WSNs) not only causes severe information loss but also leads to excessive energy consumption. To address this problem, a novel scheme for congestion avoidance, detection and alleviation (CADA) in WSNs is proposed in this paper. By exploiting data characteristics, a small number of representative nodes are chosen from those in the event area as data sources, so that the source traffic can be suppressed proactively to avoid potential congestion. Once congestion occurs inevitably due to traffic mergence, it will be detected in a timely way by the hotspot node based on a combination of buffer occupancy and channel utilization. Congestion is then alleviated reactively by either dynamic traffic multiplexing or source rate regulation in accordance with the specific hotspot scenarios. Extensive simulation results under typical congestion scenarios are presented to illuminate the distinguished performance of the proposed scheme.Congestion in wireless sensor networks （WSNs） not only causes severe information loss but also leads to excessive energy consumption. To address this problem, a novel scheme for congestion avoidance, detection and alleviation （CADA） in WSNs is proposed in this paper. By exploiting data characteristics, a small number of representative nodes are chosen from those in the event area as data sources, so that the source traffic can be suppressed proactively to avoid potential congestion. Once congestion occurs inevitably due to traffic mergence, it will be detected in a timely way by the hotspot node based on a combination of buffer occupancy and channel utilization. Congestion is then alleviated reactively by either dynamic traffic multiplexing or source rate regulation in accordance with the specific hotspot scenarios. Extensive simulation results under typical congestion scenarios are presented to illuminate the distinguished performance of the proposed scheme.

关 键 词：Wireless sensor network （WSN） Congestion control CORRELATION Traffic multiplexing Rate regulation 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置] TP393.11[自动化与计算机技术—控制科学与工程]