Abstract: 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 multi-hop wireless communication paths. Through extending the link-layer equivalent bandwidth model, a lower bound of delay-bound 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.

Key words: wireless network, equivalent bandwidth, Doppler rate, delay

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。

关键词: 无线网络, 等效带宽, 多普勒频移, 延迟