通信学报2025，Vol.46Issue(z1)：69-84,16.DOI:10.11959/j.issn.1000-436x.2025240
非饱和WLAN中多链路EDCA的捕获感知性能分析
Capture-aware performance analysis of multi-link EDCA in unsaturated WLAN
摘要
Abstract
A comprehensive performance analysis of multi-link enhanced distributed channel access(EDCA)was pre-sented in unsaturated wireless local area network(WLAN),with a focus on capture-aware transmission dynamics.To ac-curately model the backoff behavior under non-saturation conditions,the traditional Markov chain framework was ex-tended by introducing an idle state,capturing the probability of deferral when no external collisions occurred at a zero backoff counter.Furthermore,the spatial distribution of multi-link contention nodes was modeled using a Poisson point process within a stochastic geometry framework,allowing for the derivation of a novel,traffic-class-specific capture probability model.This model quantified the impact of interference,deployment density,access point coverage radius,and capture thresholds on the transmission success probability of each access category(AC).Simulation results demon-strate that,when the deployment density of non-AP multi-link devices is below 0.25 devices/m² and the capture threshold is less than 35 dB,the capture effect can reduce collision probability by 8.06%and improve high-priority AC throughput by more than 40%.These findings provide guidelines for adaptive EDCA parameter tuning and spatial network planning in IEEE 802.11be and beyond WLAN systems.关键词
增强型分布式信道接入/多链路WLAN/马尔可夫链模型/随机几何/捕获效应/非饱和业务Key words
EDCA/multi-link WLAN/Markov chain model/random geometry/capture effect/non-saturated operation分类
信息技术与安全科学引用本文复制引用
钟祎,毕王霖峰,葛晓虎,黄逸..非饱和WLAN中多链路EDCA的捕获感知性能分析[J].通信学报,2025,46(z1):69-84,16.基金项目
国家自然科学基金资助项目(No.62471193)The National Natural Science Foundation of China(No.62471193) （No.62471193）
