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Channel allocation and power control schemes for cross-tier 3GPP LTE networks to support multimedia applications

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Abstract

In this paper, we present the framework of a channel allocation (CA) and power control (PC) schemes for the minimization of interference in cross-tier 3GPP LTE networks that aim to support internet of multimedia things. Channel allocation scheme based on an interference graph preserving the minimum number of interfered MUEs by femtocells (IG-MIM) is proposed to mitigate interference amongst femtocells, and a game theory based power control algorithm is also proposed to reduce interference to surrounding macrocell users (MUEs). The proposed IG-MIM scheme constructs the interference graph based on a predefined threshold and allocates the subchannels to the femtocells that maintain the smallest number of interfered MUEs. For the power control, we design a payoff function based on the rewards from the achieved data rates and the penalties from the interference in regards to its adjacent femtocells. The simulation results show that the IG-MIM channel allocation significantly improves the SINR performance for the femtocell users (FUEs) being served; the game theory based power control decreases the power requirements of a femtocell and alleviates the interference to the MUEs.

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Acknowledgements

This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government(MSIP) (No. NRF-2016R1A2B4012638). This research was also supported by the Natural Science Foundation of Jiangsu Province under Grant BK20160287, and in part by the Fundamental Research Funds for the Central Universities under Grant 2015B30614.

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Correspondence to Chang Choi.

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Su, X., Wang, Y., Choi, D. et al. Channel allocation and power control schemes for cross-tier 3GPP LTE networks to support multimedia applications. Multimed Tools Appl 76, 25875–25891 (2017). https://doi.org/10.1007/s11042-016-4320-3

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  • DOI: https://doi.org/10.1007/s11042-016-4320-3

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