考虑干扰的无线传感器网络拓扑控制问题研究

Topology Control in Wireless Sensor Networks with Interference Considered

无线传感器网络的拓扑控制是一个十分重要的技术问题。干扰对传感器网络应用产生了重要的影响,较大的传输干扰将导致信号的碰撞,增大网络延时间。但是,目前的大多数文献没有把干扰作为传感器网络拓扑控制的设计目标和考虑因素之一。本文研究考虑干扰的拓扑控制机制问题,根据传感器网络通信特点,设计了最优的集中式算法和适合实际应用的次优分布式算法解决该问题。模拟实验结果表明,提出的算法与传统算法相比能有效减少网络干扰、节省能量消耗和减少网络延时,因此是一种新的高效的拓扑控制机制。

Topology control in wireless sensor networks is a very important technology. Interference plays an important role in the application of wireless sensor networks, because large interference will increase communication signal collisions and induce great delay in data delivering. But most current literatures do not take interference into consideration. In the paper, we mainly address interference-aware topology control problems in wireless sensor networks. According to the factors of sensor network communications, we design an optimum centralized algorithm and a distributed sub-optimum interferenceaware CDS-based topology control algorithm suitable for realistic applications. We make simulations of our two interferenceaware topology control algorithms and make comparisons with the existing algorithms. The simulation results show that our interference-aware topology control algorithms have good performance on network interference, energy and delay.