| The proliferation of wireless networks on unlicensed communication bands is leading to coexisting networks, creating interference problems. In this paper, we present a game-theoretic model of dynamic channel change for multiple highly interfering cognitive wireless networks. The channel-change decisions depend on the number of coexisting networks and the cost of channel change. Game-theoretic analysis reflects the choices and motivations of independent, rational, selfish decision makers that do not trust one another. The channel-change probability is shown to increase with the number of coexisting networks. We also compare these decisions to idealized, socially optimal decisions that maximize the expected benefit of the coexisting networks. The difference between the two analyses gives the cost of non-cooperation. We see that this cost goes down as the number of networks increases. |
| Dr. Roli Wendorf has been on the research staff of Philips Research, Briarcliff Manor, New York, for 14 years from 1987-2001, most recently as Senior Member of Research Staff. During 2002-2005, she was pursuing the degree of Doctor of Professional Studies in Computer Science at Pace University, White Plains, New York. The research presented here is based on this work. Her areas of interest include wireless networking, home networking, personal entertainment devices, software engineering, software process improvement, distributed systems, and real-time systems. Roli Wendorf also holds M.S. in Computer Science from Carnegie-Mellon University, and B.Tech. and M.Tech. in Electrical Engineering from the Indian Institute of Technology, Kanpur. She is currently an adjunct faculty member at Pace University. |