无线Ad hoc网络中基于Quorum系统的异步节能机制改进

Improvement of Asynchronus Power Saving Mechanism Based on Quorum System in MANET

无线Ad hoc网络是一种没有外界能量补给的自组织网络,网络中每一个节点都靠最初的能量储备来维持,因此,节能便成为至关重要的问题。基于Quorum分布式系统提出的节能机制,其核心思想是使节点的激活时隙成为一种特定的分布,保证互相之间的时隙有交叠,从而使得通信的两个节点能够监听到对方。本文将介绍在无线Ad hoc网络中传统的同步方式面临的挑战,前人对基于Quorum的异步节能机制所做的工作,最后提出一种"Dgrid"自适应的异步节能机制。

In MANET, energy can not been supplied from the outside,which means,every node in this kind of networks keeps it＇s all different function just depends on the initiatory energy.so power saving become the most important issue.Power saving mechanism based on quorum system,which makes the active intervals a specifically distributing, can guarantee the intervals overlap in every two nodes which need to communicate.this paper firstly introduces the problem of traditional synehronus power saving mechanism,and the previous work of the asynchrouns power saving mechanism,then propose a self-adaptive asynehronus mechanism named ＂Dgrid＂.