一种面向随机调度无线传感器网络的路由方法

A new routing method for duty-cycled wireless sensor networks

休眠机制是无线传感器网络中节省能量、提高网络寿命的主要方法之一,但同时也带来了端到端延迟性能的下降.尤其对于低占空比无线传感器网络,不同路由方法对网络性能特别是延迟性能的影响很大.提出一种基于随机调度的分布式逐跳路由方法:根据邻居节点的位置信息及其随机调度种子信息,在下一跳选择中以前进距离与延迟之比作为转发测度.理论分析和仿真结果显示,对比已有方法,该方法在端到端分组投递延迟和转发跳数方面具有优势.

Sleep scheduling is a widely-used mechanism for saving energy and prolonging network lifetime. However, in extremely low duty-cycled wireless sensor networks, achieving high performance of end-to-end packet delivery delay requires a carefully-designed routing method. We first present an implementation of random duty cycling, and then design a distributed routing method. We consider both forwarding progresses and transmission delay in the selection of next hop node when making forwarding decisions. Theoretical analyses and simulation results show that our routing method has advantages in terms of latency and hop distances, compared to the existing methods.