MASPECT: A Distributed Opportunistic Channel Acquisition Mechanism in Dynamic Spectrum Access Networks
The authors present a distributed opportunistic channel acquisition mechanism in Dynamic Spectrum Access (DSA) networks. A novel graph MAximum SPECTrum packing algorithm (MASPECT), is proposed for a system with N secondary networks, in which, each secondary network makes use only of the local topology information (i.e., information about itself and its one-hop neighbors) to resolve contentions during channel access. The proposed algorithm also adapts easily to topological changes. Most approaches to channel acquisition either use centralized graph coloring approaches or use distributed approaches that result in under utilization of spectrum resources.