Research Article
Spectrum Aware Routing for Multi-Hop Cognitive Radio Networks with a Single Transceiver
@INPROCEEDINGS{10.1109/CROWNCOM.2008.4562509, author={Huisheng Ma and Lili Zheng and Xiao Ma and Yongjian luo}, title={Spectrum Aware Routing for Multi-Hop Cognitive Radio Networks with a Single Transceiver}, proceedings={3rd International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications}, publisher={IEEE}, proceedings_a={CROWNCOM}, year={2008}, month={7}, keywords={Cognitive Radio Network; Routing; Channel Assignment}, doi={10.1109/CROWNCOM.2008.4562509} }- Huisheng Ma
Lili Zheng
Xiao Ma
Yongjian luo
Year: 2008
Spectrum Aware Routing for Multi-Hop Cognitive Radio Networks with a Single Transceiver
CROWNCOM
IEEE
DOI: 10.1109/CROWNCOM.2008.4562509
Abstract
In multi-hop single transceiver Cognitive Radio networks (MSCRN), routing becomes of great challenge when IEEE 802.11 DCF is used as the MAC protocol. Routing should not base on common control channel because it is not ensured that common control channel can be obtained by each node. In this paper, we propose a spectrum aware on-demand routing which doesn’t base on control channel. A channel assignment algorithm aimed at improving link utilization is derived based on delay-analysis. The overhead and gain by switching is balanced in this algorithm. For deafness problem caused by switching can result in significant performance degradation, we give the constraints to avoid the appearance of this problem in channel assignment process. We stress that our approach can be easily implemented for the using of standard IEEE 802.11DCF. Results of simulation show that, our approach can well fit MSCRN and improve the network throughput comparing to the same network scenario without cognitive ability.