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http://dx.doi.org/10.7840/kics.2013.38B.1.18

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

Jo, Sangik (서강대학교 전자공학과 통신 시스템 연구실)
Lim, Jaechan (포항공과대학교 창의 IT 융합공학과 / 미래IT융합연구원)
Hong, Daehyoung (서강대학교 전자공학과 통신 시스템 연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.38B, no.1, 2013 , pp. 18-25 More about this Journal
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.
Keywords
HetNets (Heterogeneous Networks); Femtocell; Coverage; Self-Organizing Networks (SON); Power Adjustment;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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