Ultra-Reliable Communication in 5G mmWave Networks: A Risk-Sensitive Approach

Abstract : In this letter, we investigate the problem of providing gigabit wireless access with reliable communication in 5G millimeter-wave (mmWave) massive multiple-input multiple-output networks. In contrast to the classical network design based on average metrics, we propose a distributed risk-sensitive reinforcement learning-based framework to jointly optimize the beamwidth and transmit power, while taking into account the sensitivity of mmWave links due to blockage. Numerical results show that our proposed algorithm achieves more than 9 Gbps of user throughput with a guaranteed probability of 90%, whereas the baselines guarantee less than 7.5 Gbps. More importantly, there exists a rate-reliability-network density tradeoff, in which as the user density increases from 16 to 96 per km2, the fraction of users that achieves 4 Gbps is reduced by 11.61% and 39.11% in the proposed and the baseline models, respectively.
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Submitted on : Monday, June 4, 2018 - 4:04:15 PM
Last modification on : Friday, March 15, 2019 - 10:33:14 AM

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Trung Kien Vu, Mehdi Bennis, Merouane Debbah, Matti Latva-Aho, Choong Seon Hong. Ultra-Reliable Communication in 5G mmWave Networks: A Risk-Sensitive Approach. IEEE Communications Letters, Institute of Electrical and Electronics Engineers, 2018, 22 (4), pp.708 - 711. ⟨10.1109/LCOMM.2018.2802902⟩. ⟨hal-01807327⟩

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