Journal
WIRELESS NETWORKS
Volume 17, Issue 1, Pages 167-181Publisher
SPRINGER
DOI: 10.1007/s11276-010-0271-1
Keywords
MAC; Routing; Ad-hoc networks; Spectrum-agile radios; Cross-layer design
Categories
Funding
- US Army Research Office [W911NF-04-1-0224, W911NF-05-1-0246]
- National Science Foundation [CNS-0435522]
- Baskin Chair of Computer Engineering
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We present the CROWN (Collaborative ROuting, scheduling and frequency assignment for Wireless ad hoc Networks) scheme. CROWN is a cross-layer optimization approach for spectrum-agile nodes to adjust their spectrum allocation and transmission scheduling according to the underlying traffic demands. Instead of choosing the optimal route based on predetermined transmission scheduling and frequency assignment results, CROWN incorporates the efficiency of the underlying frequency assignment and scheduling information into the routing metric calculation, so that the route with the maximal joint spatial and frequency reuse is selected. Simulation results show that CROWN efficiently exploits the frequency diversity and spatial reuse features of spectrum-agile radios.
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