An Enhanced Handover Strategy for GSM-R Technology

Abstract

Global System for Mobile Communications for Railway (GSM-R) technology plays an important role on high speed railway communication; but the handover technique demands betterment in high speed railways. This paper enhances the handover algorithm for GSM-R technology by applying a newly proposed Dynamic Handover Margin Evaluation(DHME) technique that provides ping-pong effect free dynamic handover margin according to the vehicle speed, establishing a new Group handover algorithm which is inspired by Bully's Algorithm for coordinator selection. Bully's Algorithm for coordinator selection in distributed system is implemented here for user grouping to reduce the number of handover requests in mobile networks. So congestion is reduced in a particular BTS. This paper also proposes a priority handover scheme based on Guard Channel Method (GCM) suitable for GSM-R technology. Finally the paper by using MATLAB 7.0 analyses the handover request dropping rate for GSM-R by applying DHME and group handover algorithm, which results in the reduction of handover request dropping rate by 58% approximately.

High‐speed based adaptive beamforming handover scheme in LTE‐R

“…On this basis, the authors proposed a handover trigger scheme where the handover position was determined by statistical data in [16]. In [17], the authors proposed a joint handover trigger scheme based on RSRP and speed, this scheme used a fast handover scheme to improve the handover success probability when the speed exceeded a threshold. In [18], the handover trigger scheme based on probability of satisfied communication (PoSC) model was proposed, this scheme can reduce the handover numbers and maintain high QoS by considering the effect of received signal strength, co‐channel interference and speed on BER.…”

A Low Cost Efficient Model for Automatic Barricading of Unmanned Railroad Level Crossings

“…The hooter will be louder as the level crossing nears, and finally it will be silent after the train passes by. There are several other methods proposed for automatically controlled railway gate at the level crossing, railway track switching mechanism and the movement of the train using sensors, micro controllers for reduction of railway accidents but all demand heavy investment [8][9][10][11][12][13][14][15][16][17][18][19][20].…”