传感网络中一种基于地理位置的簇路由

A cluster-based multimedia routing protocol for sensor networks

针对传统频谱感测算法无法适应认知无线电传感网络(CRSNs)的问题,提出1种基于簇的地理位置路由(CGR)算法:利用频谱感知信息和剩余能量建立簇;再将离信宿距离更近、剩余能量大于阈值的节点作为下一跳转发节点,从而得以使用具有最低通信成本的路径传输数据。仿真结果表明,相比基于频谱感知的簇多媒体(SCEM)路由,提出的CGR在能量消耗和端到端传输时延方面均可得到有效控制。

Aiming at the problem that it is difficult to be directly applied in CRSNs for traditional spectrum sensing algorithms,the paper proposed a cluster-based geographical routing(CGR)protocol:the clusters were formed based on the spectrum sensing information and residual energy;and the node with shorter distance to sink and with higher energy than the threshold level was taken as a relay node in order to choose the energy-balanced routes with lowest communication cost for data routing.Simulational result showed that compared with SCEM,the proposed CGR could efficiently control the energy consumption and end-to-end transfer delay.