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Distributed Spectrum Access with Spatial Reuse

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2 Author(s)
Xu Chen ; School of Electrical, Computer and Energy Engineering, Arizona State University, Tempe, Arizona, USA ; Jianwei Huang

Efficient distributed spectrum sharing mechanism is crucial for improving the spectrum utilization. The spatial aspect of spectrum sharing, however, is less understood than many other aspects. In this paper, we generalize a recently proposed spatial congestion game framework to design efficient distributed spectrum access mechanisms with spatial reuse. We first propose a spatial channel selection game to model the distributed channel selection problem with fixed user locations. We show that the game is a potential game, and develop a distributed learning mechanism that converges to a Nash equilibrium only based on users' local observations. We then formulate the joint channel and location selection problem as a spatial channel selection and mobility game, and show that it is also a potential game. We next propose a distributed strategic mobility algorithm, jointly with the distributed learning mechanism, that can converge to a Nash equilibrium.

Published in:

IEEE Journal on Selected Areas in Communications  (Volume:31 ,  Issue: 3 )