Hybrid Congestion Control Protocol in Wireless Sensor Networks

• Main Authors: Li-Jen Chang, 張力仁
• Other Authors: 許健平
• Format: Others
• Language: en_US
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/83842463132011770027

碩士 === 國立中央大學 === 資訊工程研究所 === 95 === In wireless sensor networks, the congestion occurs when offered traffic load exceeds available capacity of sensor nodes. In most applications, every sensor node will send its sensing event to sink node and result in the sensors closer to the sink experiencing congestion. Congestion may cause packets loss, lower network throughput and waste energy of sensors. To address this challenge, we propose a distributed algorithm that mitigates congestion and allocates appropriate source rate to sink node for sensor networks. The proposed algorithm is a hybrid congestion control protocol which is considered not only the packets delivery rate but remaining buffer size of each node. Our protocol can avoid packets drop due to traffic congestion and improve the network throughput. The simulation results show that the performance of our protocol is better than the previous works.