Energy-Efficient ICI Mitigation with Dynamic and Location-Based Power Allocation in Mobility-Based 5G HetCN
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Energy‑Efficient ICI Mitigation with Dynamic and Location‑Based Power Allocation in Mobility‑Based 5G HetCN Janmoni Borah1 · Joyatri Bora1 Accepted: 29 October 2020 © Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract This paper proposes a power allocation mechanism for the HetCNs which is both dynamic and location-based. This mechanism could be adopted for both macrocells (MCs) and superimposed fixed or mobile small cells (SCs) to mitigate the inter-cell interference (ICI) effects. The proposed power allocation scheme could be termed as Dynamic Power Allocation based on User Location (DPAUL) mechanism, which dynamically changes the transmit power of serving base stations (BSs) depending on the location of users in the cell and then allocates to the concerned BSs. The work illustrates the dynamic downlink interference mitigation occurring within the cells, mainly due to the mobile SCs and mobile users. The Cell-User Mobility model has been adopted in this work, to analyze the mobility of cells and its users within the network. The proposed DPAUL scheme has been compared with some other works, including the author’s previously proposed DPAM mechanism. The proficiency of the proposed scheme on setup network has been investigated with sub 6 GHz and mmWave spectrums, and then effect on performance metrics such as sumrate, user throughput, energy-efficiency, and outage probability have been observed. Keywords Fixed SCs · Mobile SCs · Sub 6 GHz · mmWave · Power allocation · Energyefficiency
1 Introduction Dwelling in the space beyond 24 GHz, the millimeter-wave spectrum provides rapid access to huge chunks of data, which typically boost the current network speed. Apparently, along with acquiring this immense speed and capacity, the extensive future prerequisites of the 5G heterogeneous cellular networks (HetCNs) could be highly fulfilled with the diversification and densification of the network serving towers. Among these, small cells (SCs) * Janmoni Borah [email protected] Joyatri Bora [email protected] 1
Department of Electronics and Communication Engineering, North Eastern Regional Institute of Science and Technology, Itanagar, India
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towers resorting mmWave high-frequency spectrum and Macrocells (MC) towers transmitting within sub 6Ghz spectrum are highly proficient in improvising network system capacity to an optimal level besides interference management. Also, these towers impart their role crucially in obtaining an extremely energy-efficient cellular network. Moreover, the cellular network deploying SCs provides the most suitable environment for the transmission of a mmWave owing to its wave characterizing factors including high path loss, shorter wavelength, limited propagation distance. Also, the narrower beam of the mmWave along with its high directivity produces a profound impact in terms of interference management. To provide rapid data rates to the offloaded as well as highly dense traffic areas such as offices, railway stations,
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