基于地理信息的分簇式路由协议

Clustering routing protocol based on geographical information

针对节点的地理信息,在GAF的网格结构以及GAF-h的蜂窝结构的基础上,分别提出了基于网格结构和基于蜂窝结构的分簇式路由协议.周期性的轮换活动子格或者活动网格,并按照一定的分簇算法选举出簇头节点;利用簇头节点的位置信息和能量信息综合得出转发代价.仿真结果表明,相比GAF和GAF-h,基于网格结构和基于蜂窝结构的分簇式路由协议都极大的延长了无线传感器网络的生存时间.

Based on the geographic information for nodes, the lessons were draw from the grid structure of GAF and cellular structure of GAF-h, a clustering protocol was proposed based on grid structure and another clustering protocol based on the cellular structure. Turn of active sub cell or active grid periodically was taken and the cluster node was selected according to a certain clustering algorithm; besides the forwarding cost was calculated in accordance with location information and remaining energy information of the cluster node. The simulation results show that, compared with GAF and GAF-h, the clustering protocol based on grid structure and the clustering protocol based on the cellular structure both prolong the wireless sensor network lifetime remarkably.