Optimizing Next Generation Wireless BAN with Prioritized Access for Heterogeneous Traffic

TL;DR

This paper introduces ADP2-MAC, a novel priority-based MAC protocol for WBANs that dynamically adapts polling intervals and interrupts lower-priority traffic to improve delay and reliability for heterogeneous traffic.

Contribution

The paper presents ADP2-MAC, a new adaptive MAC protocol that enhances delay and reliability in WBANs by supporting heterogeneous traffic with dynamic polling and interruption mechanisms.

Findings

ADP2-MAC outperforms MVDR in delay and reliability.

Dynamic polling improves energy efficiency.

Interrupt mechanism effectively handles urgent data.

Abstract

Efficient management of heterogeneous traffic with varying priorities is critical in Wireless Body Area Networks (WBANs). The priority mechanisms embedded in Media Access Control (MAC) schemes largely govern the performance of WBAN in terms of reliability, delay and energy efficiency. Minimizing the delay between packet generation and reception is critical for enhancing WBAN performance and associated health outcomes; however, delay optimization must be tailored to each traffic priority. In this work, we proposed a novel priority-based MAC protocol, Adaptive and Dynamic Polling MAC for Prioritized Traffic (ADP2-MAC), designed to support heterogeneous traffic in WBANs. The protocol utilizes a probabilistic approach to dynamically determine channel polling/listening intervals. ADP2-MAC not only identifies traffic arrival patterns to determine optimal polling intervals but also interrupts the transmission of lower-priority data when urgent packets are expected. The performance of ADP2-MAC has been compared with the MAC protocol for Variable Data Rates (MVDR) which supports heterogeneous traffic by assigning different data rates based on traffic priority. ADP2-MAC outperforms MVDR due to its use of probabilistic polling intervals and an interruption mechanism designed to efficiently handle urgent-priority data.