Backoff Algorithm Optimization and Analysis for IEEE 802.15.4 Wireless Sensor Networks

被引：0

作者：

Liu, Qiong ^{[1
]}

Li, Peng ^{[2
]}

机构：

[1] Univ Duisburg Essen, Dept Commun Syst, D-47057 Duisburg, Germany

[2] CSIC, Inst 723, Yangzhou 225001, Jiangsu, Peoples R China

来源：

2014 9TH INTERNATIONAL SYMPOSIUM ON COMMUNICATION SYSTEMS, NETWORKS & DIGITAL SIGNAL PROCESSING (CSNDSP) | 2014年

关键词：

IEEE; 802.15.4; CSMA/CA; backoff algorithm; collision probability; markov chain;

D O I：

暂无

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

In wireless personal area network, a channel is shared by a number of nodes. Therefore packet collision may take place which degrades the system performance. To enhance the performance of slotted carrier sense multiple access (CSMA/CA) for IEEE 802.15.4 wireless sensor networks, we propose a collision-aware backoff algorithm (CABEB), which can dynamically select a suitable backoff period based on the collision probability of current network. In addition, a theoretical analysis based on Markov chain is proposed to derive a mathematical model for our proposal. The results of OMnet++ simulation indicate that the proposed backoff algorithm (CABEB) performs better than the previous IEEE 802.15.4 standard and KEB (knowledge-based exponential backoff).

引用

页码：411 / 416

页数：6