Abstract
Femtocell is one of the promising technologies for improving service quality and data rate of indoor users. Femtocell is short-range, low-cost, and low-power base stations (BS) installed by the consumer indoors. Even though femtocell can provide improved home coverage and capacity for indoor users, it causes interference to macrocell users when femtocell uses the same frequency band of macrocell. To reduce the interference between macrocell and femtocell, it is needed to analyze the characteristic of macrocell and femtocell considering various interference scenarios. In this paper, we investigate the uplink and downlink capacity of macrocell and femtocell according to the strength of femtocell transmit power and the number of femtocells through simulations. Simulation results show that femtocell transmit power and the number of femtocells affect the performance of macrocell. From the results, we find the adequate femtocell transmit power which minimize the performance degradation of macrocell and femtocell. We also investigate capacities of macrocell and femtocell according to the locations of femtocell BS and macrocell UE.
This work was supported by National Research Foundation of Korea Grant funded by the Korean Government (2009-0074466) and by the MKE (The Ministry of Knowledge Economy), Korea, under the ITRC (Information Technology Research Center) support program supervised by the NIPA (National IT Industry Promotion Agency) (NIPA-2009-(C1090-0902-0005) and NIPA-2009-(C1090-0902-0046)).
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Kim, C.S., Choi, BG., Lee, J.Y., Lee, TJ., Choo, H., Chung, M.Y. (2010). Femtocell Deployment to Minimize Performance Degradation in Mobile WiMAX Systems. In: Taniar, D., Gervasi, O., Murgante, B., Pardede, E., Apduhan, B.O. (eds) Computational Science and Its Applications – ICCSA 2010. ICCSA 2010. Lecture Notes in Computer Science, vol 6018. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-12179-1_9
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DOI: https://doi.org/10.1007/978-3-642-12179-1_9
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