Research Article
A Distributed Routing and Time-slot Assignment Algorithm for Cognitive Radio Ad Hoc Networks with Primary-User Protection
@INPROCEEDINGS{10.1109/ChinaCom.2012.6417529, author={chen hao and Pinyi Ren and Li Sun and Qinghe Du}, title={A Distributed Routing and Time-slot Assignment Algorithm for Cognitive Radio Ad Hoc Networks with Primary-User Protection}, proceedings={7th International Conference on Communications and Networking in China}, publisher={IEEE}, proceedings_a={CHINACOM}, year={2012}, month={10}, keywords={cognitive radio distributed routing time-slot assignment primary-user protection}, doi={10.1109/ChinaCom.2012.6417529} }- chen hao
Pinyi Ren
Li Sun
Qinghe Du
Year: 2012
A Distributed Routing and Time-slot Assignment Algorithm for Cognitive Radio Ad Hoc Networks with Primary-User Protection
CHINACOM
IEEE
DOI: 10.1109/ChinaCom.2012.6417529
Abstract
Cognitive Radio (CR) technology enables Secondary Users (SUs) to transparently utilize the licensed spectrum bands while causing limited interference to Primary Users (PUs). In this paper, a distributed routing and time-slot assignment (DRTSA) algorithm is proposed to address the PU protection issue. Specifically, we first design a proper routing metric for distributed path selection and then we propose a time-slot assignment algorithm to improve SUs' capacity and reduce the interference to PU as well. Theoretical analysis shows that the complexity of DRTSA is no more than $O(NTlogN)$, where $N$ and $T$ denote the number of nodes and the time-slot period in the network respectively. Simulation results show that, under various network scenarios, the performance of the proposed distributed algorithm can approach that of the centralized alternatives.