一种基于分层体心部署模型的水下传感器网络路由算法

A ROUTING ALGORITHM BASED ON LAYERED BODY-CENTRED CUBIC LATTICE DEPLOYMENT MODEL FOR UNDERWATER SENOR NETWORKS

节点分簇和簇首轮换机制是无线传感器网络中解决能量有效问题的经典方法,但仅适用于节点是固定或准固定的情况。在水下传感器网络中,经常会有节点因为各种原因移动或者失效。提出一种适用于水下传感器网络的分层体心部署模型,该模型把网络抽象成移动节点层和固定节点层,并采用覆盖性能最优的体心部署,同时提出一种基于LEACH协议且适合分层体心部署模型的静态分层-动态分簇路由算法。NS2的仿真结果表明这种方法能够延长网络的生命周期,并在一定程度上提高了网络的平均吞吐量。

The mechanism of node clustering and cluster-heads rotation is a classic method to solve the problem of energy efficiency in wireless sensor networks, but they only fit the fixed or quasi-fixed nodes. In underwater sensor networks, nodes may move or fail frequently due to various causes. This paper protx^ses a kind of layered body-centred cubic lattice deployment model suitable for underwater sensor networks. In the model the network is abstracted into mobile node layer and fixed node layer, and the body-centred cubic lattice deployment with best coverage performance is adopted, then a static hierarchy-dynamic clustering routing algorithm is presented, which is based on LEACH protocol and is suitable for layered body-centred cubic lattice deployment model. Simulation result of the NS2 shows that this method can prolong the lifecycle of the network, and improve the network average throughput to certain extent.