Abstract
In this paper, we propose a countrywide licensed full spectrum allocation (LFSA) technique to allocate each mobile network operator (MNO) countrywide full 28 GHz millimeter-wave (mmWave) spectrum to operate its small cells per building subject to avoiding co-channel interference (CCI). We present a time-domain CCI avoidance scheme and deduce the optimal amount of time for each MNO. We derive average capacity, spectral efficiency (SE), energy efficiency (EE), and cost efficiency (CE) for LFSA. Extensive numerical and simulation results and analyses for an example scenario of a country consisting of four MNOs is carried out for the best case, as well as the worst case, CCI scenarios for MNO 1. It is shown that LFSA can improve average capacity, SE, EE, and CE by 300%, 165%, 75%, and 60% respectively for the best case, whereas 100%, 32%, 50%, and 20% respectively for the worst case, CCI scenarios. Moreover, the proposed LFSA can satisfy the SE and EE requirements for sixth-generation (6G) mobile systems by reusing the countrywide full 28 GHz mmWave spectrum to small cells of MNO 1 of about 60% less number of buildings for the best case, whereas 23% less number of buildings for the worst case, CCI scenarios.
Published Version
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