Fundamentals of statistical signal processing: estimation theory
Fundamentals of statistical signal processing: estimation theory
GPSR: greedy perimeter stateless routing for wireless networks
MobiCom '00 Proceedings of the 6th annual international conference on Mobile computing and networking
Proceedings of the 5th ACM international symposium on Mobile ad hoc networking and computing
Proceedings of the 11th annual international conference on Mobile computing and networking
Design and implementation of a multi-channel multi-interface network
REALMAN '06 Proceedings of the 2nd international workshop on Multi-hop ad hoc networks: from theory to reality
NeXt generation/dynamic spectrum access/cognitive radio wireless networks: a survey
Computer Networks: The International Journal of Computer and Telecommunications Networking
Localization in wireless sensor networks
Proceedings of the 6th international conference on Information processing in sensor networks
Geographic routing without planarization
NSDI'06 Proceedings of the 3rd conference on Networked Systems Design & Implementation - Volume 3
Routing in cognitive radio networks: Challenges and solutions
Ad Hoc Networks
Cognitive radios for dynamic spectrum access: from concept to reality
IEEE Wireless Communications
End-to-end protocols for Cognitive Radio Ad Hoc Networks: An evaluation study
Performance Evaluation
Research challenges towards the Future Internet
Computer Communications
Reactive routing for mobile cognitive radio ad hoc networks
Ad Hoc Networks
CoRoute: a new cognitive anypath vehicular routing protocol
Wireless Communications & Mobile Computing
Higher layer issues in cognitive radio network
Proceedings of the International Conference on Advances in Computing, Communications and Informatics
On estimating the end-to-end bandwidth in multi-transceiver multi-hop cognitive radio networks
Proceedings of the 8th ACM workshop on Performance monitoring and measurement of heterogeneous wireless and wired networks
Licensed user activity estimation and track in mobile cognitive radio ad hoc networks
Computers and Electrical Engineering
Mobile Networks and Applications
A new outlook on routing in cognitive radio networks: minimum-maintenance-cost routing
IEEE/ACM Transactions on Networking (TON)
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Recent research in the emerging field of cognitive radio (CR) has mainly focussed on spectrum sensing and sharing, that allow an opportunistic use of the vacant portions of the licensed frequency bands by the CR users. Efficiently leveraging this node level channel information in order to provide timely end-to-end delivery over the network is a key concern for CR based routing protocols. In addition, the primary users (PUs) of the licensed band affect the channels to varying extents, depending on the proportion of the transmission power that gets leaked into the adjacent channels. This also affects the geographical region, in which, the channel is rendered unusable for the CR users. In this paper, a geographic forwarding based SpEctrum Aware Routing protocol for Cognitive ad-Hoc networks (SEARCH), is proposed that (i) jointly undertakes path and channel selection to avoid regions of PU activity during route formation, (ii) adapts to the newly discovered and lost spectrum opportunity during route operation, and (iii) considers various cases of node mobility in a distributed environment by predictive Kalman filtering. Specifically, the optimal paths found by geographic forwarding on each channel are combined at the destination with an aim to minimize the hop count. By binding the route to regions found free of PU activity, rather than particular CR users, the effect of the PU activity is mitigated. To the best of our knowledge, SEARCH takes the first steps towards a completely decentralized, CR routing protocol for mobile ad-hoc networks and our approach is thoroughly evaluated through analytical formulations and simulation study.