基于Ad Hoc无线网的多跳交换算法分析及其仿真结果

论文对基于多跳无线局域网并应用多接入点技术(APs)进行通信的交换性能进行了分析。当一个移动终端不能跟任何接入点进行通信时,它就会用其他移动终端作为终端转发器(TRs)。这种交换标准是建立在绝对和相对信号强度基础上的,其性能指标即平均交换量和平均交换延迟。论文研究了当移动终端和终端转发器均处于移动状态下的交换标准及性能指标之间的联系。多次结果表明当终端转发器移动速度增大时平均交握延迟减小但平均交换量增大。

Analysis of the Multihop Handoff Algorithm and the Result of Its Simulation Based on Ad Hoc Wrieless LAN

This paper analyzes the handoff performance of a multihop-based wireless LAN that uses Acess Points(APs )for communication.When a mobile terminal isn't able to communicate with any APs ,it uses other mobile terminals as Terminal Repeaters(TRs ).The handoff criteria are based on absolute and relative signal strengths.The performance criteria are the average number of handoffs and the average handoff delay.This paper investigates the relation between the handoff criteria and the performance criteria when both the mobile terminal and the terminal repeaters are moving.Numerical results are presented to show that the average handoff delay decreases but the average number of handoffs increases as the TRs' moving speed is increased.