Evaluating Power Control Strategies for UORA in IEEE 802.11be Systems with Capture Effect

2026-07-20

AI Summary

This study addresses the fairness issues in uplink random access under the IEEE 802.11be UORA mechanism, particularly in the presence of capture effects and uneven spatial distribution of stations. For the first time, it systematically evaluates the interplay between two power control strategies and capture effects. Through system-level simulations integrating the standard UORA mechanism, power control algorithms, and a capture effect model, the work reveals the critical influence of spatial distribution on multi-user uplink random access performance. The results demonstrate that the adopted power control strategies significantly improve access success probability, reduce latency, enhance resource utilization, and increase energy efficiency—thereby boosting overall system throughput while maintaining fairness among users.

Abstract

Uplink OFDMA-based random access (UORA) is a new channel access mechanism that supports uplink multiuser access in the new generation WiFi systems. Any associated stations (STAs) can use UORA to send their requests or data to the access point (AP) in a contention manner. In this paper, we provide a comprehensive evaluation for simulation study that investigates two power control strategies combined with capture effect in UORA and observes the fairness issue for spatial distribution of STAs. The results demonstrate that power control strategies can improve the performance of access success probability, delay, resource utilization, and power efficiency of UORA.

Problem

• UORA
• power control
• capture effect
• fairness
• IEEE 802.11be

Innovation

• Power Control
• UORA
• Capture Effect
• IEEE 802.11be
• Uplink OFDMA