An Autonomous Downlink Power Adjustment Method of Femtocell for Coverage Optimization in Next Generation Heterogeneous Networks 


Vol. 38,  No. 1, pp. 18-25, Jan.  2013


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  Abstract

In this paper, we propose a self-optimization scheme for indoor femtocell coverage in heterogeneous networks. If the femtocell coverage is larger than indoor area, neighbor cell users passing by the outer area of the femtocell coverage may request an unnecessary handover which incurs wasteful signaling overhead. On the other hand, if the coverage is smaller than the indoor area, some of indoor users might not be connected to the indoor femtocell. Therefore, we propose the method by which the femtocell coverage attains the exact indoor area employing self-organized scheme. Autonomous self TX power adjustment of the femtocell is possible because the proposed method utilizes handover request events and membership information of users that can be obtained by the femtocell itself. We show that the TX power obtained by the proposed algorithm converges to the optimal TX power that can be obtained analytically to attain the indoor coverage area.

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  Cite this article

[IEEE Style]

S. Jo, J. Lim, D. Hong, "An Autonomous Downlink Power Adjustment Method of Femtocell for Coverage Optimization in Next Generation Heterogeneous Networks," The Journal of Korean Institute of Communications and Information Sciences, vol. 38, no. 1, pp. 18-25, 2013. DOI: .

[ACM Style]

Sangik Jo, Jaechan Lim, and Daehyoung Hong. 2013. An Autonomous Downlink Power Adjustment Method of Femtocell for Coverage Optimization in Next Generation Heterogeneous Networks. The Journal of Korean Institute of Communications and Information Sciences, 38, 1, (2013), 18-25. DOI: .

[KICS Style]

Sangik Jo, Jaechan Lim, Daehyoung Hong, "An Autonomous Downlink Power Adjustment Method of Femtocell for Coverage Optimization in Next Generation Heterogeneous Networks," The Journal of Korean Institute of Communications and Information Sciences, vol. 38, no. 1, pp. 18-25, 1. 2013.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880