Abstract
Recently, considerable attention has been devoted to the potential cognitive femtocell to allow for higher capacity and intelligent coverage, with guaranteed quality of service (QoS) for future indoor services. This interest is because of the fact that femtocells can access a resource, sufficiently and locally, to known users with higher throughput. In this article, cognitive femtocell is proposed as a solution for spectrum scarcity problems and local-convergence demands for indoor network applications. In addition, a devel oped gateway broadband router based on novel cross-layer management optimization is used to control the data packet delivery between the macro cell and cognitive femtocell, using a priority queuing (PQ) strategy. This solution combines the physical, medium access control (MAC), and application layers to maintain the requested QoS in response to the dynamic changes in the wireless environment. Simulation results show higher-throughput rates achieved and successful performance of cognitive femtocells for voice over Internet Protocol (VoIP) and video applications in future Internet networks using the PQ policy.
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