A HIERARCHICAL CONGESTION AVOIDANCE ALGORITHM IN WIRELESS SENSOR NETWORKS

被引：0

作者：

Liu, Yunlu ^{[1
,2
]}

Pu, Juhua ^{[1
,2
]}

Shu, Lei ^{[3
]}

Xiong, Zhang ^{[1
,2
]}

机构：

[1] Beihang Univ, Sch Comp Sci & Engn, Beijing 100191, Peoples R China

[2] Beihang Univ Shenzhen, Res Inst, Shenzhen 518000, Peoples R China

[3] Osaka Univ, Grad Sch Informat Sci & Technol, Dept Multimedia Engn, Suita, Osaka 5650871, Japan

来源：

INTERNATIONAL JOURNAL OF INNOVATIVE COMPUTING INFORMATION AND CONTROL | 2012年 / 8卷 / 7B期

基金：

中国国家自然科学基金; 国家教育部博士点专项基金资助;

关键词：

Congestion control; MAC protocol; Wireless sensor networks (WSNs); CONTROL PROTOCOL; AWARE; SCHEME;

D O I：

暂无

中图分类号：

TP18 [人工智能理论];

学科分类号：

081104 ; 0812 ; 0835 ; 1405 ;

摘要：

In most wireless sensor networks (WSNs), all data converge to the sink. A node needs to forward data from its downstream nodes that are farther to the sink. Thus the nodes closer to the sink have relatively heavier traffic load, which easily results in congestion at these nodes. To deal with this problem, this paper presents a novel hierarchical congestion avoidance algorithm, HCA, and HCA provides different channel access opportunities to different nodes based on the distribution of traffic loads. In another word, HCA gives the nodes with heavier loads more chance to transmit data to avoid and mitigate congestion occurrence. For each node, its traffic load is estimated via the hierarchical level it locates and the number of children it has. Simulation results show that HCA algorithm reduces packet loss ratio, improves throughput and gains energy saving in single-path WSNs, which highlights the property of mitigating congestion of HCA.

引用

页码：5199 / 5210

页数：12