Optimization of Handover Algorithms in LTE High-speed Railway networks

Abstract

This paper introduces two kinds of handover algorithms that adjust the handover (HO) parameters of LTE (Long-Term Evolution) eNodeB (evolved NodeB) to improve the overall network performance and diminish negative effects. The focus is on the impact that two kinds of handover algorithms compare to A3 event based on the optimization of hysteresis and time-to-trigger in the different velocity environment and the different SINR. Both parameters have been designed and implemented in a dynamic system level simulator and have been investigated for different parameter sets in a high-speed railway) simulation scenario. Reference Signal Received Power (RSRP) and Reference Signal Received Quality (RSRQ) parameters have been simulated in a dynamic link level simulation and studied the influence factors via the simulation. The results suggest that optimized handover algorithms have higher handover success rate than the classical A3 event in the different velocity environment.