基于拓扑优化和链路感知的无线体域网路由协议

为解决无线体域网(Wireless Body Area Networks,WBAN)在人体运动过程中网络拓扑结构频繁变化导致链路质量和WBAN性能下降等问题，首先根据人体结构对WBAN网络拓扑进行优化，通过添加中继节点建立WBAN主干网，提供节点和hub之间相对稳定的链接，然后提出了适用于WBAN拓扑优化后的路由策略(Routing Protocol Based on Topology Optimization and Link Awareness,R-TOLA)。R-TOLA综合了链路质量感知和代价函数，通过调整主干网中继和节点中继获得最优化路径。仿真实验表明，基于拓扑结构优化和链路感知的R-TOLA协议和其他路由协议相比，在人体拓扑网络结构频繁变化的环境下具有网络生存时间更长、吞吐量更大等优势。

Wireless Body Area Networks Routing Protocol Based on Topology Optimization and Link Awareness

In order to solve such problems as descent of link quality and performance caused by frequent changes of network topology during human movement in wireless body area networks(WBAN),the WBAN network topology is optimized according to the human body structure.The WBAN backbone network is established by adding relay nodes to provide relatively stable links between nodes and hubs.Then a routing strategy,or Routing Protocol Based on Topology Optimization and Link Awareness(R-TOLA),applicable to WBAN after topology optimization,is proposed.R-TOLA integrates link quality awareness and cost function to obtain the optimal path by adjusting backbone relay and node relay.Simulation experiments show that the R-TOLA protocol has advantages such as longer network survival time and higher throughput compared with other routing protocols in an environment with frequent changes of human topology network structure.