Abstract: In mobile Ad Hoc networks, the mobility of nodes has negative impact on end-to-end performance. To quantify this impact, this paper proposes a MANET performance analyzing model based on virtual clock with link availability theory, which defines the time period from a packet generation to its successful transmission to the next hop as the virtual clock. Through this model, path throughput and average packet end-to-end delay can be accurately obtained. And how speed and transmission range and density of nodes affect the measurements of end-to-end performance can be analyzed.

Key words: mobile Ad Hoc, virtual clock, end-to-end, performance analysis

摘要： 在MANET中，节点移动对端到端性能产生消极影响。为了量化此影响，结合链路可用度的概念，将分组发送至下一跳的平均时间作为虚拟时钟节拍，提出一种基于虚拟时钟的MANET性能分析模型。通过此模型可以较准确地求出路径吞吐量和分组平均端到端时延等性能指标，并分析出节点速度、传输半径、分布密度等环境配置参数对这2个性能指标的影响。

关键词: 移动Ad Hoc, 虚拟时钟, 端到端, 性能分析

CLC Number: 

• TP393