无线多跳网络的延迟性能分析  

Delay performance in wireless multi-hop networks

作　　者：林颖[1] 许力[1] 

机构地区：[1]福建师范大学数学与计算机科学学院,福州350007

出　　处：《计算机应用》2010年第1期134-136,共3页journal of Computer Applications

基　　金：国家自然科学基金资助项目(60502047);福建省教育厅重点资助项目(JA07030);福建省自然科学基金资助项目(2008J0014;2007F3025)

摘　　要：多跳无线网络技术具有广阔的应用前景。研究如何精确地分析、预知和保证多跳无线通信路线的端到端延迟性能非常重要。通过引入一个延迟违约概率的下限,扩展链路层等效带宽模型,并在不同的信道服务速率和无线信道条件下进行模拟。分析和仿真发现,与信道服务速率相比,最大多普勒频移对多跳延迟性能的影响更大。Wireless multi-hop networks have a wide range of application forecast. It is crucial to develop feasible methodologies and techniques for accurately analyzing, predicting and guaranteeing end-to-end delay performance over multihop wireless communication paths. Through extending the link-layer equivalent bandwidth model, a lower bound of delaybound violation probability was derived. Analytical results were verified by extensive computer simulations under different traffic load and wireless channel conditions. Multi-hop delay performance is proved to be much more sensitive to maximum Doppler rate than channel service rate.

关 键 词：多跳 无线网络 延迟 等效带宽 多普勒频移 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]