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Optimal Resource Allocation Scheme according to Access Mode in LTE Femtocell Systems  

Lee, In-Sun (인하대학교 정보통신공학과 무선전송연구실)
Park, Min-Ho (인하대학교 정보통신공학과 무선전송연구실)
Kim, Dong-Ki (인하대학교 정보통신공학과 무선전송연구실)
Hwang, Jae-Ho (인하대학교 정보통신공학과 무선전송연구실)
Kim, Jae-Moung (인하대학교 정보통신공학과 무선전송연구실)
Publication Information
Journal of Satellite, Information and Communications / v.6, no.2, 2011 , pp. 26-34 More about this Journal
Abstract
In Femtocell that provides high quality of indoor communications with low transmitted power, there are two typical Access modes; Closed Access mode and Open Access mode. In this paper, we propose resource allocation scheme, which mitigates difference of performance between Access modes and improves overall cell performance, according to Access mode. We give more wireless resources to Open Access mode Femtocell, which improves performance of other users, than Closed Access mode Femtocell. If Open Access mode Femtocell uses more resource, there is trade-off between improvement of user using Open Access mode Femtocell and increase of interference that other users receive. So, we solve the optimal value for resource allocation and analyze performance of conventional scheme and proposed scheme applying the optimal value. Eventually, proposed scheme can improve overall cell performance relative to conventional scheme.
Keywords
Femotocell; Open Access mode; Closed Access mode; OFDMA; Frequency Reuse;
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