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Ultra-Dense 5G small cell deployment for fiber and wireless backhaul-aware infrastructures

Lotfi Rezaabad, A ; Sharif University of Technology | 2018

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  1. Type of Document: Article
  2. DOI: 10.1109/TVT.2018.2875114
  3. Publisher: Institute of Electrical and Electronics Engineers Inc , 2018
  4. Abstract:
  5. In this paper, we study the cell planning problem for a two-tier cellular network containing two types of base stations (BSs)— i.e. with fiber backhaul, referred to as wired BSs (W-BSs), and BSs with wireless backhaul, referred to as unwired-BSs (U-BSs). In-band full-duplex wireless communications is used to connect U-BSs and W-BSs. We propose an algorithm to determine the minimum number of W-BSs and U-BSs to satisfy given cell and capacity coverage constraints. Furthermore, we apply our proposed non-dominated sorting genetic algorithm II (NSGA-II) to solve the joint cell and backhaul planning problem to minimize the cost of planning, while maximizing the coverage simultaneously. Additionally, the considered cell planning program is developed into an optimization by including the problem of minimizing the cost of fiber backhaul deployment. In order to analyze the performance of the proposed algorithm, we study three different deployment scenarios based on different spatial distributions of users and coverage areas. The results show the superiority of our proposed NSGA-II algorithm for joint cell and backhaul planning to other well-known optimization algorithms. The results also reveal that there is a trade-off between cell deployment costs and SINR/rate coverage, and W-BSs are placed in congested areas to consume less resources for wireless backhauls. Similarly, a trade-off between cell and fiber deployment costs and SINR/rate coverage is observed in the joint cell and fiber backhaul planning. We show that for realistic scenarios desirable solutions can be selected from the Pareto front of the introduced multi-objective problem based on given cellular operator policies. IEEE
  6. Keywords:
  7. Cell planning ; Cellular networks ; Fiber-wireless (FiWi) networks ; In-band full-duplex (IBFD) ; Microprocessors ; Millimeter-wave networks ; Planning ; Wireless communication ; 5G mobile communication systems ; Cells ; Computer architecture ; Costs ; Cytology ; Economic and social effects ; Fibers ; Genetic algorithms ; Microprocessor chips ; Millimeter waves ; Mobile telecommunication systems ; Passive networks ; Passive optical networks ; Signal interference ; Wireless networks ; Wireless telecommunication systems ; Cellular network ; Fiberwireless (FiWi) ; Full-duplex ; Next-generation passive optical networks (NG-PONs) ; Selfbackhauling ; Wireless communications ; Optical fiber communication
  8. Source: IEEE Transactions on Vehicular Technology ; 2018 ; 00189545 (ISSN)
  9. URL: https://ieeexplore.ieee.org/document/8488527