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Terminal density dependent resource management in cognitive heterogeneous networks

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Abstract

In cognitive heterogeneous network, when multitudes of femtocells coexist, effective resource management become important to enhance network performance. Based on the base station location and terminal distribution density, we propose spectrum management and power configuration scheme for femtocells deployment network. In the beginning, we consider two femtocells adjacent network and propose the resource management scheme. The scheme allocates time frequency resource by adopting complete reusing and private usage in non-overlapping and overlapping areas respectively. Subsequently the scheme optimizes base station power under the constraints of cross-tier interference and maximal transmission power to maximize network capacity. According to the analysis of the power variation effect to femtocell coverage, a near-optimal solution of the transmission power is derived, and the corresponding power configuration scheme is proposed. After then we extend the spectrum and power management to multiple femtocells coexisting networks, and propose the management scheme applied for multiple femtocells deployment networks. The simulation results indicate that in capacity performance, the proposed power solution is close to the optimal solution, and the proposed resource management outperforms the existing schemes.

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Acknowledgments

This work was supported by the National Natural Science Foundation of China (NSFC) (Grant No. 61402107), Doctoral Scientific Research Foundation of Guangdong Province (Grant No. ZJ121204), Natural Science Foundation of Guangdong Province (Grant No. 2015A030313652) and Guangdong Province Commonweal Research Technological Project (Grant No. 2015A010103019, 2015A010103020)

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Authors and Affiliations

  1. Dongguan University of Technology, Dongguan, 523808, China

    Guobin Zhang & Huazhu Liu

  2. Techtotop Microelectronics Technology Corporate Limited Company, Guangzhou, 510663, China

    Ke Lin

  3. South China University of Technology, Guangzhou, 510641, China

    Feng Ke

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  1. Guobin Zhang
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  2. Huazhu Liu
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  3. Ke Lin
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  4. Feng Ke
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Correspondence to Guobin Zhang.

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Zhang, G., Liu, H., Lin, K. et al. Terminal density dependent resource management in cognitive heterogeneous networks. Wireless Netw 23, 1509–1522 (2017). https://doi.org/10.1007/s11276-016-1235-x

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  • DOI: https://doi.org/10.1007/s11276-016-1235-x

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