Quality of Service Improvement for High-Speed Railway Communications

TL;DR

This paper proposes using MIMO technology to enhance the quality of service in high-speed railway communications, addressing issues like high error rates and handover failures to ensure reliable, high-speed connectivity for passengers.

Contribution

It introduces a MIMO-based model with resource allocation and access control strategies specifically designed for high-speed railway communication systems.

Findings

MIMO improves data rate and reliability.

Proposed schemes reduce handover failures.

Analytical and simulation results confirm performance enhancements.

Abstract

With the fast development of high-speed railways, a call for fulfilling the notion of communication at "anytime, anywhere" for high-speed train passengers in the Train Operating Control System is on the way. In order to make a realization of that, new railway wireless communication networks are needed. The most promising one is the Long Term Evolution for Railway which will provide broadband access, fast handover, and reliable communication for high mobility users. However, with the increase of speed, the system is subjected to high bit error rate, Doppler frequency shift and handover failure just like other system does. This paper is trying to solve these problems by employing MIMO technique. Specifically, the goal is to provide higher data rate, higher reliability, less delay, and other relative quality of services for passengers. MIMO performance analysis, resource allocation, and access control for handover and various services in a two-hop model are proposed in this paper. Analytical results and simulation results show that the proposed model and schemes perform well in improving the system performances.