A Robust Inter Beam Handover Scheme for 5G mmWave Mobile Communication System in HSR Scenario

This paper exploits the inter beam handover(IBH) mechanism for 5G mmWave mobile communication system in high speed rail(HSR) scenario. Considering higher speed and narrower coverage of serving beam in mmWave system, more frequent handover(HO) will happen, so in order to reduce inter beam handover failure rate of the network, a novel jointly optimized dynamic inter beam handover(JOD-IBH) scheme based on multiple beams cooperation was proposed in this paper, where handover failure rate and resource occupation rate were jointly optimized. Simulation results show that the proposed JOD-IBH brings improvements to the inter beam handover performance for HSR scenario, which can be observed in reducing handover failure rate and achieving the balance between handover failure rate and resource occupation rate.