一种基于负载均衡的WSN可靠路由协议

摘要

The communication qualities of the wireless links between the neighbor nodes are poor and unstable which may be caused by node energy exhaustion, node physical destroy or environment inference. The invalidation of wireless links can cause the route breakdown, packet loss and retransmission, which weaken the reliability of the data transmission. Numerous studies show the difficulty to improve the energy efficiency and reliability of routing protocols due to the local unbalanced traffic load distribution. This paper proposes a reliable routing protocol based on load-balancing, namely RR. This protocol employs some mechanisms, including continuous gradient parameter and dynamic link quality evaluation. Experimental results show that this protocol achieves better performance in energy consumption, load balancing and delivery rate.%根据传感器网络的无线信道质量及稳定性、网络局部区域负载均衡性等特点，提出一个跨层协作的可靠路由协议(RR)，包括链路质量动态评估机制、节点间距离的精确分级评估方法。RR可以建立并维护从传感器节点到汇聚节点的传输路径，将监测数据可靠地传输到汇聚节点。实验结果表明，在基于 RR 的传感器网络中，该协议可有效地减少靠近汇聚节点区域节点的最高负载，并提高数据接收率。