밀리미터파 대역에서의 랜덤 접속 기반 무선 인접 장치 탐색 성능 분석

In the 5G (5th generation) mobile communications, where a large number of smart devices are connected, the wireless neighbor discovery has attracted an attention as a basic technology for providing various services based on mutual proximity. In particular, the neighbor discovery over millimeter wave (mmWave), which is a spectrum for 5G services, is expected to lead to the emergence of new proximity based services that support a high data rate. In this regard, the network-level performance evaluation of neighbor discovery over mmWave spectrums can become a basis for new service designs. However, conventional network-level performance evaluations in mmWave has been primarily done for unicast communications such as multicell networks, and there is a lack of research on the neighbor discovery in mmWave. In this sense, this paper evaluates the network-wide performances of the wireless neighbor discovery through reflecting the propagation properties of mmWave. To this end, this study builds a simplified system model through applying stochastic geometry based results, analyzes the performance impacts of blockages and beamforming that are inherent properties of mmWave, and compares the performances with those over a below 6GHz.