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J. Sens. Actuator Netw. 2018, 7(4), 43; https://doi.org/10.3390/jsan7040043

Context-Based Dynamic Meshed Backhaul Construction for 5G Heterogeneous Networks

1
Department of Electrical and Electronic Engineering, Tokyo Institute of Technology, Tokyo 152-8552, Japan
2
Computer Science Department—Telematics, Karlstad University, SE-65188 Karlstad, Sweden
*
Author to whom correspondence should be addressed.
Received: 3 August 2018 / Revised: 5 September 2018 / Accepted: 25 September 2018 / Published: 2 October 2018
(This article belongs to the Special Issue Trends, Issues and Challenges toward 5G)
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Abstract

Five-G heterogeneous network overlaid by millimeter-wave (mmWave) access employs mmWave meshed backhauling as a promising cost-efficient backhaul architecture. Due to the nature of mobile traffic distribution in practice which is both time-variant and spatially non-uniform, dynamic construction of mmWave meshed backhaul is a prerequisite to support the varying traffic distribution. Focusing on such scenario of outdoor dynamic crowd (ODC), this paper proposes a novel method to control mmWave meshed backhaul for efficient operation of mmWave overlay 5G HetNet through Software-Defined Network (SDN) technology. Our algorithm is featured by two functionalities, i.e., backhauling route multiplexing for overloaded mmWave small cell base stations (SC-BSs) and mmWave SC-BSs’ ON/OFF status switching for underloaded spot. In this paper, the effectiveness of the proposed meshed network is confirmed by both numerical analyses and experimental results. Simulations are conducted over a practical user distribution modeled from measured data in realistic environments. Numerical results show that the proposed algorithm can cope with the locally intensive traffic and reduce energy consumption. Furthermore, a WiGig (Wireless Gigabit Alliance certified) device based testbed is developed for Proof-of-Concept (PoC) and preliminary measurement results confirm the proposed dynamic formation of the meshed network’s efficiency. View Full-Text
Keywords: mmWave; 5G heterogeneous network; meshed backhaul; outdoor dynamic crowd; SDN; dynamic construction; testbed; numerical analysis; experimental validation mmWave; 5G heterogeneous network; meshed backhaul; outdoor dynamic crowd; SDN; dynamic construction; testbed; numerical analysis; experimental validation
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Tran, G.K.; Santos, R.; Ogawa, H.; Nakamura, M.; Sakaguchi, K.; Kassler, A. Context-Based Dynamic Meshed Backhaul Construction for 5G Heterogeneous Networks. J. Sens. Actuator Netw. 2018, 7, 43.

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