基于网络演算的无线自组网端到端延迟上界研究  

End-To-End Upper Delay Bound Research about Wireless Ad Hoc Network Based on Network Calculus

作　　者：李庆华[1,2] 陈志刚[1] 赵明[1] 黄国盛[1] 曾锋[1] 闫伟光[1] 

机构地区：[1]中南大学信息科学与工程学院,长沙410083 [2]直春学院通信教研室,宜春344000

出　　处：《系统仿真学报》2009年第8期2248-2251,2284,共5页Journal of System Simulation

基　　金：国家自然科学基金项目(60573127);国家自然科学基金项目(60773012);教育部创新团队(IRT0661)

摘　　要：为保证无线自组网的服务质量(QoS),对进入无线自组网络节点的数据流进行漏桶管制,节点为数据流提供基于速率-延迟(Rate-Latency)模型的服务保障;在已有无线自组网链路吞吐量模型的基础上利用网络演算理论推导出了无线自组网端到端的延迟上界模型。对具有特定拓扑的无线自组网,仿真的延迟结果都在数值计算的延迟上界范围之内,表明基于网络演算理论的无线自组网端到端延迟上界模型具有较好的性能。In order to guarantee the QoS for Wireless Ad hoc network, the data flow entering the node was regulated by leaky bucket, and the node provided Rate-Latency service for the flow. The end-to-end upper delay bound for wireless ad hoc network was derived based on the existing link throughput model using network calculus theory. For those special network topologies, all simulated delay was bounded by theoretical delay. Results show the end-to-end upper delay bound model performs well.

关 键 词：无线自组网 CSMA/CA 服务曲线 确定网络演算 延迟上界 仿真 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]