Radio resource management and performance study in cognitive femotcell networks

Femtocell networks provide mobile users with low-cost and high-bandwidth Internet access. Femtocells embedded in macrocells form a hierarchical network. When a mobile user is in a femtocell under the hierarchical network, the user can connect to the base station in the femtocell. However, due to the inaccurate position information of wireless location estimation methods, the user may connect to an inappropriate base station, which reduces the system performance. Therefore, we establish a model which uses the mean distance error, the probability distribution of the distance error and the estimated position of the mobile user to calculate the probability that connects to correct femtocell, and further evaluate the impact of different position estimation methods on the system performance.

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