الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
The massive increasing of the exchanging data, number of users, new applications, and the shortage of the current usable spectrum (several hundred megahertz and a few gigahertz) in the existing 4G mobile network led to think in exploiting millimeter wave (mm-Wave) spectrum for the next generation 5G mobile networks.
MM-Wave spectrum occupies the band from 30~300 GHz and this will require new architecture in 5G network with dense small scale cells provided with Base Stations (BS) equipped with Massive Multiple Input Multiple Output (Massive-MIMO) antennas due to the short propagation range and the needing for line-of-sight paths for mm-waves.
This new architecture achieves some advantages like better spectral allocations, increasing no. of users and no. of connected devices, expanding the application of Internet of Things (IoT) technology but also brings new difficult tasks in security provisioning, new stringent latency requirements and potential risk of some security attacks.