An efficient beam-tracking technique for mmWave communication systems

In this paper, an efficient beam-tracking technique for a mobile station (MS) in mmWave communication systems is proposed to identify the cause of beam error using a motion sensor based on micro-electro-mechanical systems (MEMS) as well as an electrical signal. The motion sensor estimates the rotation angle and detects whether the device moves. The proposed technique tracks a beam by handling the specific situation depending on the cause of beam error, minimizing the tracking overhead. The performance of the proposed beam-tracking technique is evaluated by simulations in three typical scenarios.