Backhaul-aware Decoupled Uplink and Downlink User Association, and Power Control in Fi-Wi HetNets

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HASHEMI R.; Beyranvand H.

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Journal Paper

Paper Information

Journal: AUT Journal of Electrical Engineering Year:2020 | Volume:52 | Issue:2 Page(s): 147-158

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Information Journal Paper

Title

Backhaul-aware Decoupled Uplink and Downlink User Association, and Power Control in Fi-Wi HetNets

Author(s)

HASHEMI R. | Beyranvand H. | Issue Writer Certificate

Keywords

Fiber-Wireless (Fi-Wi) Heterogeneous Networks

Decoupled Uplink and Downlink

Power control and Subcarrier Allocation

Passive Optical Networks

Abstract

Decoupling the uplink and downlink user association improves the throughput of heterogeneous networks (HetNets) and balances the traffic load of macro-and small-base stations. Recently, fiber-wireless HetNets (FiWi-HetNets) have been considered as viable solutions for access networks. To improve the accuracy of user association and resource allocation algorithms in FiWi-HetNets, the capacity limitation of various backhaul technologies must be considered. In this paper, we investigate the backhaul-aware decoupled uplink/downlink (UL/DL) user association, subcarrier allocation, and power control optimization problem in FiWi-HetNets. In our system model, fiber and millimeter wave (mmWave) links are used as backhaul of base stations, and the backhaul capacity limitation and minimum required transmission rate (R_min) are modeled in the optimization problem. As the formulated optimization problem is non-convex, we present a heuristic algorithm to divide the main problem into two sub-problems that are solved iteratively. The proposed algorithms are evaluated through exhaustive simulations. The results indicate that decoupling UL/DL user association improves the sum rate of FiWi-HetNets. Besides, we evaluate the effect of backhaul capacity limitation and R_min on the sum rate of FiWi-HetNets. The effect of upgrading fiber backhaul technology is also investigated to evaluate the role of fiber backhaul on the sum rate of the radio access network.

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APA: Copy

HASHEMI, R., & Beyranvand, H.. (2020). Backhaul-aware Decoupled Uplink and Downlink User Association, and Power Control in Fi-Wi HetNets. AUT JOURNAL OF ELECTRICAL ENGINEERING, 52(2), 147-158. SID. https://sid.ir/paper/977791/en

Vancouver: Copy

HASHEMI R., Beyranvand H.. Backhaul-aware Decoupled Uplink and Downlink User Association, and Power Control in Fi-Wi HetNets. AUT JOURNAL OF ELECTRICAL ENGINEERING[Internet]. 2020;52(2):147-158. Available from: https://sid.ir/paper/977791/en

IEEE: Copy

R. HASHEMI, and H. Beyranvand, “Backhaul-aware Decoupled Uplink and Downlink User Association, and Power Control in Fi-Wi HetNets,” AUT JOURNAL OF ELECTRICAL ENGINEERING, vol. 52, no. 2, pp. 147–158, 2020, [Online]. Available: https://sid.ir/paper/977791/en

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