802.11 Wireless Networks: The Definitive Guide
802.11 Wireless Networks: The Definitive Guide
Interference evaluation of Bluetooth and IEEE 802.11b systems
Wireless Networks
DIMSUMNet: New Directions in Wireless Networking Using Coordinated Dynamic Spectrum Access
WOWMOM '05 Proceedings of the Sixth IEEE International Symposium on World of Wireless Mobile and Multimedia Networks
Enabling open-source cognitively-controlled collaboration among software-defined radio nodes
Computer Networks: The International Journal of Computer and Telecommunications Networking
Network selection in cognitive radio systems
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
SAMA: spectrum agile medium access control for cognitive radios
MILCOM'09 Proceedings of the 28th IEEE conference on Military communications
PUMA: policy-based unified management architecture for wireless networking
Proceedings of the 2010 ACM workshop on Wireless of the students, by the students, for the students
A policy-based constraint-solving platform towards extensible wireless channel selection and routing
Proceedings of the Workshop on Programmable Routers for Extensible Services of Tomorrow
Realizing the future of wireless data communications
Communications of the ACM
Forty data communications research questions
ACM SIGCOMM Computer Communication Review
EM-MAC: a dynamic multichannel energy-efficient MAC protocol for wireless sensor networks
MobiHoc '11 Proceedings of the Twelfth ACM International Symposium on Mobile Ad Hoc Networking and Computing
Direct conversion transceivers as a promising solution for building future ad-hoc networks
NEW2AN'07 Proceedings of the 7th international conference on Next Generation Teletraffic and Wired/Wireless Advanced Networking
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We consider the concept of opportunistic spectrum access (OSA) -- whereby radios identify unused portions of licensed spectrum, and utilize that spectrum without adverse impact on the primary licensees. OSA allows both dramatically higher spectrum utilization and near-zero deployment time, with an obvious and significant impact on both civilian and military communications. We discuss two broad classes of challenges to OSA: spectrum agility, which involves wideband sensing, opportunity identification, coordination and use; and policy agility, which enables regulatory policies to be applied dynamically using machine understandable policies. Focusing on spectrum agility, we present an architecture based on an OSA adaptation layer. We describe protocols for OSA, including a hole information protocol, idle channel selection and use, and an access protocol for the coordination channel. We present a simulation study, discuss insights, and show that even a simple protocol for opportunistic spectrum allocation can provide an order-of-magnitude performance improvement in throughput over a legacy system.