一种基于查询的多汇聚节点无线传感器网络路由方法技术

一种多汇聚节点无线传感器网络中基于查询的路由方法，属于无线网络协议技术领域。主要用于减少无线传感器网络节点建立和维护路由的能量开销，以达到节约全网能量消耗的目的。具体方法是使每个sink节点动态更新一个最佳覆盖范围值Cs，只将查询任务以interest的形式发布给最佳覆盖范围内的节点，建立和维护一个以自身为中心的较小的路由树。未包含在树内的传感器节点采用按需路由方式，在有数据传输需要时才寻求建立一条连接到该路由树的路由。本发明专利技术可以减少网络维护过多路由带来的开销，更适用于链路状态多变的网络环境。

A query based routing method for wireless sensor networks with multiple sink nodes

The invention relates to a query based routing method in a wireless sensor network with multiple sink nodes, belonging to the wireless network protocol technology field. It is mainly used to reduce the energy cost of establishing and maintaining routing in wireless sensor networks, so as to save the energy consumption of the whole network. The specific method is that each node of sink dynamic update of an optimal coverage value of Cs, only the query task distribution node to the best coverage area in the form of interest, the establishment and maintenance of a routing tree itself as the center of the small. Sensor nodes not included in the tree use on-demand routing and seek to establish a route that is connected to the routing tree when data transmission is needed. The invention can reduce the overhead caused by the network maintenance over routing, and is more suitable for the network environment with changeable link states.

【技术实现步骤摘要】

【技术保护点】
一种基于查询的多汇聚节点无线传感器网络路由方法，其特征在于：在一个具有多个汇聚（ｓｉｎｋ）节点的无线传感器网络中，每个ｓｉｎｋ节点通过动态更新的最佳覆盖范围值（Ｃｓ），只将查询任务以ｉｎｔｅｒｅｓｔ的形式发布给最佳覆盖范围内的节点，建立和维护一个以自身为中心的较小的路由树；而该范围以外的传感器节点采用按需路由方式，在有数据传输需要时才寻求建立一条连接到该路由树的路由。

【技术特征摘要】

【专利技术属性】
技术研发人员：赵壮，高雪，王钦，王江，张锦刚，
申请(专利权)人：无锡泛联物联网科技股份有限公司，
类型：发明
国别省市：32