Simple and Efficient MAC for Cognitive Wireless Personal Area Networks

In this paper we investigate the performance of a cognitive personal area network (CPAN) with round robin service where each node is allowed to transmit at most one packet in one transmission cycle. Furthermore, upon transmitting a packet, the node has to perform spectrum sensing in order to distribute the sensing load in a fair manner and enable smooth operation of the CPAN. Duration of the sensing period is regulated by a predefined penalty coefficient; however, sensing may be interrupted by reception activity of the node. We present a probabilistic model of this system and investigate the performance limits with respect to the traffic load and value of the penalty coefficient.