Fuzzy Logic based Relay Selection for MmWave Communications
Rehab Abdel-Raouf, Hamada Esmaiel, Osama A. Omer · 2019
Millimeter wave (mmWave) band is considered a powerful key enabler for future generation (5G) mobile networks by providing multi-Gb/s data rates. However, mmWave, e.g., 60 GHz (WiGig) links are very susceptible to obstacles blocking, due to high propagation loss and penetration loss. Device to device (D2D) relaying is considered as an effective approaches to deal with the blockage problem in mmWave communication. In this paper we propose a novel fuzzy logic based relay selection scheme for the mmWave network. For the relay selection scheme if the mmWave link blocked between the access point (AP) and the mobile node is detected, a fuzzy logic system (FLS) is used to select the best relay among the AP's neighbors based on three metrics: achievable data rate, the mobile node speed and battery level. As the relay node is selected, the AP will start beamforming training for constructing the high data rate mmWave link with the chosen mobile node through a relay node. As the proposed scheme combines between the most three important metrics in network, the simulation analysis confirms the superiority of the proposed scheme over the conventional scheme.