利用路径优先级实现传感器网络中的拥塞避免

提出了一种基于路径优先级的多路径传感器网络拥塞避免算法.传感器节点通过监测队列剩余空间长度和拥塞状态持续时间实时更新节点的拥塞状态指数(CSI),当检测到CSI发生改变时,计算节点的路由状态指数(RP-SI)并通知其邻居节点,邻居节点更新记录下游节点的RPSI,调整下游路径的优先级.传感器节点根据信息优先级的不同,通过不同优先级的路径发送数据.仿真结果表明,提出的算法在减少网络拥塞的发生和减少网络时延等方面取得了很好的性能.

Implement Congestion Avoidance in WSN Using Path Priority

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.