Journal of Beijing University of Posts and Telecommunications

  • EI核心期刊

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2012, Vol. 35 ›› Issue (1): 15-18.doi: 10.13190/jbupt.201201.15.zhaochl

• Papers • Previous Articles     Next Articles

Implement Congestion Avoidance in WSN Using Path Priority

ZHAO Cheng-lin, TAN Hu, MAO Song
  

  1. Key Laboratory of Universal Wireless Communication(Beijing University of Posts and Telecommunications),Ministry of Education, Beijing 100876, China
  • Received:2011-04-11 Revised:2011-06-07 Online:2012-02-28 Published:2012-01-05
  • Contact: Hu TAN E-mail:tanhu8621950@sina.com
  • Supported by:

    National Natural Science Foundation of China;National Natural Science Foundation of China

Abstract:

A new congestion avoidance algorithm based on priority of path is proposed for multi-path wireless sensor networks. By monitoring the remaining space of the queue and congestion duration, the sensor node can update its congestion state index (CSI) in real-time. When CSI changes, the node calculates the its routing state index (RPSI), and notifies the neighbor nodes, which will update the records on the next hop nodes RPSI, and adjust the priority of the next hop path. The sensor nodes send different data through different routes based on the priority. Simulation shows that the proposed algorithm achieves satisfactory performance in reducing the occurrence of network congestion and the latency of network transmission.

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