Scheduling of UAV-assisted Millimeter Wave Communications for High-Speed Railway

TL;DR

This paper proposes a UAV-assisted scheduling scheme for mmWave high-speed railway communications, utilizing dual bands and relays to maximize flow satisfaction and system throughput.

Contribution

It introduces a novel UAV-assisted scheduling algorithm that leverages two mmWave bands and relays to improve flow completion and throughput in HSR systems.

Findings

The scheme outperforms baseline methods in flow completion.

It significantly increases system throughput.

The approach effectively handles interference and eavesdropping issues.

Abstract

To exploit richer spectrum resources for even better service quality, millimeter wave (mmWave) communication has been considered for high-speed railway (HSR) communication systems. In this paper, we focus on scheduling as many flows as possible while satisfying their QoS requirements. Due to interference, eavesdropping, or other problems, some flows may not be directly transmitted from the track-side BS. In this paper, we propose an UAV-assisted scheduling scheme which utilizes a UAV to serve as relay for such flows. The proposed scheme also utilize two mmWave bands, one for the BS links and the other for the UAV links. The proposed algorithm aims to maximize the number of flows with their QoS requirements satisfied. Simulations demonstrate that the proposed scheme achieves a superior performance on the number of completed flows and the system throughput over two baseline schemes.