  Wireless Gigabit (WiGig) access points (APs) using 60 GHz unlicensed
frequency band are considered as key enablers for future Gbps WLANs. Due to its
short range transmission with high susceptibility to path blocking, a multiple
number of WiGig APs should be installed to fully cover a typical target
environment. However, using autonomously operated WiGig APs with IEEE 802.11ad
DCF, the exhaustive search analog beamforming and the maximum received power
based autonomous users association prevent the establishment of optimal WiGig
concurrent links that maximize the total system throughput in random access
scenarios. In this paper, we formulate the problem of WiGig concurrent
transmissions in random access scenarios as an optimization problem, then we
propose a Wi-Fi/WiGig coordination architecture to solve it. The proposed
coordinated Wi-Fi/WiGig WLAN is based on a tight coordination between the 5 GHz
(Wi-Fi) and the 60 GHz (WiGig) unlicensed frequency bands. By which, the wide
coverage Wi-Fi band controls the establishment of the WiGig concurrent links.
Statistical learning using Wi-Fi fingerprinting is used for estimating the best
candidate AP and its best beam identification (ID) for establishing the WiGig
concurrent link without making any interference to the existing WiGig data
links.
