A GPS-based Handover Algorithm in LTE High-speed Railway Networks

Abstract

This paper introduces one kind of new handover algorithm that measure location information of the UE (User Equipment) to execute handover (HO) procedure of LTE (Long-Term Evolution) eNodeB (evoloved NodeB) based on GPS (Global Position System) instead of Reference Signal Received Power (RSRP) and Reference Signal Received Quality (RSRQ). The focus is on the impact that the GPS-Based handover algorithm compares to A3 event handover algorithm based on the longitude and latitude in LTE high-speed railway networks. The longitude and latitude parameters have been designed and implemented in a dynamic system level simulator and has been investigated for the two kinds of radio channels (The Plain and Mountain Environment) in a high-speed railway (HSR) simulation scenario. The packet delay and the packet loss ratio have been simulated in LTE system simulation platform and have been studied the influence factors via the simulation. The simulation results show that the GPSbased HO algorithm has better performance than the classical A3 event HO algorithm in the two kinds of radio channels for high-speed mobility environment.