Quick Handover in LTE for High-Speed Metro Rails and Highways using PN Sequence Detection and Forward Handover

Abstract

Major evolution in high-speed railway and other motorized vehicular transportation systems demand equally adaptive technologies in cellular network communication. However, the high-speed of the vehicles present certain challenges with cellular communication. The existing standard protocol for high-speed mobility environment uses certain parameters to handle these challenges. However, they are not sufficient yet. As a result, high-speed vehicle users suffer from ping-pong handover and radio link failure, resulting in poor radio link quality. This paper proposes a forward handover technique combined with PN sequence detection to facilitate a quick handover capable of supporting high-speed mobility in metro rails and highways. The PN sequence keeps track of the UE location and helps set up a time synchronized handover procedure. The simulation results show a significant reduction in overall handover delay at the expense of slightly more complex implementation.