Airborne TDMA for High Throughput and Fast Weather Conditions Notification

TL;DR

This paper introduces an improved TDMA MAC scheme with piggybacking ACKs for airborne networks, enhancing throughput and weather data transmission speed during high traffic and weather conditions.

Contribution

It proposes a novel MAC protocol with reduced guard times and a weather notification model that outperforms existing methods in throughput and delay.

Findings

Enhanced throughput and network utilization with the new MAC scheme.

Significantly lower transmission delay for weather notifications.

Better performance compared to existing TDMA MAC protocols.

Abstract

As air traffic grows significantly, aircraft accidents increase. Many aviation accidents could be prevented if the precise aircraft positions and weather conditions on the aircraft's route were known. Existing studies propose determining the precise aircraft positions via a VHF channel with an air-to-air radio relay system that is based on mobile ad-hoc networks. However, due to the long propagation delay, the existing TDMA MAC schemes underutilize the networks. The existing TDMA MAC sends data and receives ACK in one time slot, which requires two guard times in one time slot. Since aeronautical communications spans a significant distance, the guard time occupies a significantly large portion of the slot. To solve this problem, we propose a piggybacking mechanism ACK. Our proposed MAC has one guard time in one time slot, which enables the transmission of more data. Using this additional data, we can send weather conditions that pertain to the aircraft's current position. Our analysis shows that this proposed MAC performs better than the existing MAC, since it offers better throughput and network utilization. In addition, our weather condition notification model achieves a much lower transmission delay than a HF (high frequency) voice communication.