QoS Provisioning with Adaptive Backoff Algorithm for IEEE 802.11ac Under Multipacket Reception

TL;DR

This paper proposes an enhancement to IEEE 802.11ac for multipacket reception channels, introducing adaptive backoff parameters to improve QoS differentiation, validated through extensive simulations of throughput, delay, and jitter.

Contribution

It introduces a novel adaptive backoff algorithm with additional parameters for QoS in MPR-enabled IEEE 802.11ac networks, enhancing service differentiation.

Findings

Improved throughput in MPR channels

Reduced delay and jitter with the new protocol

Effective QoS differentiation demonstrated

Abstract

Recent advances in physical layer communication techniques, enable receivers to decode multiple simultaneous transmissions. This technique is known as the multipacket reception (MPR). In this paper, we propose an enhancement to the IEEE 802.11ac EDCA protocol for channels supporting MPR for QoS provisioning. We show that in the case of MPR, in addition to CWmin, CWmax and AIFSN, we can use two more parameters namely (i) threshold and (ii) counter decrement value, that can offer service differentiation. The performance evaluation of the different metrics of the proposed protocol (throughput, delay, and jitter) is carried out using extensive simulations.