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 nodes 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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