Abstract—A cognitive femtocell is a new small cell based on a smart home base station to solve the spectrum-scarcity problem. Recently, dedicated resource allocation for cognitive femtocells is extensively researched to mitigate the co-channel interference. However, the cognitive femtocell may suffer from the lack of frequency resource for its users due to high data traffic load of the macrocell. In this paper, we propose a novel resource allocation scheme based on the channel sensing and the spatial radio resource reuse mechanism, which enables femto users in the cognitive femtocell to obtain more feasible radio resource. The simulation results show that the capacity of the cognitive femtocell can be improved under high data traffic load of the macrocell compared to that of the conventional scheme.
Index Terms—Cognitive femtocell, channel sensing, frequency reuse, resource allocation.
The authors are with the College of Information and Communication Engineering, Sungkyunkwan University, Jangan-gu, Suwon-si, Gyeounggi-do, Korea (e-mail: {iamhsg, ocynesl08, tjlee}@skku.edu).
Cite: Sukgi Hong, Chang-Yeong Oh, and Tae-Jin Lee, "Resource Allocation Method Using Channel Sensing and Resource Reuse for Cognitive Femtocells," International Journal of Information and Electronics Engineering vol. 3, no. 3, pp. 309-312, 2013.