无线传感器网络中基于数据融合的移动代理曲线动态路由算法研究

A Study of Trajectory-Based Mobile Agent Dynamic Routes Algorithm for Data Fusion in Wireless Sensor Networks

和传统的C/S模型相比,移动代理模型在数据融合方面更适合无线传感器网络.在基于移动代理的数据融合算法中,移动代理访问传感节点的顺序以及总数对算法的效率、网络寿命等有着重大影响.为此提出了一种基于数据融合的移动代理曲线动态路由算法设计方案.通过构造特定数据结构的数据报文和数据表,给出了目标节点基本信息收集算法获取目标节点到处理节点的最优路径;将移动代理路由归结为一个优化问题,由静态路由算法求出移动代理迁移的静态最优路由节点序列,进而获得了移动代理基于曲线的动态路由算法.理论分析和模拟实验表明,随着传感器网络规模的增大和传感数据量的增加,和其它算法相比,该算法有更小的网络耗能和延时.

Mobile agent is more suitable for wireless sensor networks than the C/S model in data fusion. In mobile agent based data fusion, the order of nodes visited along the route by mobile agent has a significant impact on the algorithm efficiency and life time of wireless sensor networks. This paper proposes a trajectory-based mobile agent dynamic route scheme for data fusion in wireless sensor networks. By designing data packet and data table with specific structure, the OBIC algorithm is first presented to obtain an optimal path between object nodes and processing element. Then an optimization problem of mobile agent static route is formed and the MASR algorithm is introduced to solve the optimal static route. The MATDR algorithm is finally presented to obtain a mobile agent dynamic route. Theoretical analysis and experimental results show that the proposed scheme is able to provide less energy consumption and network delay compared to other schemes.