Quality, Reliability, Security and Robustness in Heterogeneous Networks. 7th International Conference on Heterogeneous Networking for Quality, Reliability, Security and Robustness, QShine 2010, and Dedicated Short Range Communications Workshop, DSRC 2010, Houston, TX, USA, November 17-19, 2010, Revised Selected Papers

Research Article

Transport Control Based on Spectrum Switching Detection in Cognitive Radio Ad Hoc Networks

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  • @INPROCEEDINGS{10.1007/978-3-642-29222-4_1,
        author={Ren Han and Xiaoxia Huang and Pan Li},
        title={Transport Control Based on Spectrum Switching Detection in Cognitive Radio Ad Hoc Networks},
        proceedings={Quality, Reliability, Security and Robustness in Heterogeneous Networks. 7th International Conference on Heterogeneous Networking for Quality, Reliability, Security and Robustness, QShine 2010, and Dedicated Short Range Communications Workshop, DSRC 2010, Houston, TX, USA, November 17-19, 2010, Revised Selected Papers},
        proceedings_a={QSHINE},
        year={2012},
        month={10},
        keywords={Cognitive radio ad hoc networks spectrum switching transport control},
        doi={10.1007/978-3-642-29222-4_1}
    }
    
  • Ren Han
    Xiaoxia Huang
    Pan Li
    Year: 2012
    Transport Control Based on Spectrum Switching Detection in Cognitive Radio Ad Hoc Networks
    QSHINE
    Springer
    DOI: 10.1007/978-3-642-29222-4_1
Ren Han,*, Xiaoxia Huang1,*, Pan Li2,*
  • 1: Chinese Academy of Sciences
  • 2: Mississippi State University
*Contact email: ren.han@sub.siat.ac.cn, xx.huang@sub.siat.ac.cn, li@ece.msstate.edu

Abstract

Cognitive Radio is an intelligent wireless communication technology which can improve the radio spectrum utilization through opportunistically accessing the vacant portions of the spectrum. Due to the time-varying spectrum availability, a cognitive node has to perform spectrum switching frequently, which causes severe delay and high packet loss. Therefore, network protocol design for cognitive radio ad hoc networks (CRAHNs) should address this issue to ensure reliable end-to-end packet delivery. In this paper, we first propose a novel spectrum switching detection scheme for CRAHNs in which intermediate nodes monitor the variation of the Round-Trip Time (RTT) and the arrival interval time of packets to detect the spectrum switching over succeeding links. Based on the scheme, a new transport control mechanism is then designed to deal with spectrum switching in CRAHNs. We implement the proposed mechanisms on a USRP2-based testbed. The experiment results demonstrate that the mechanisms can detect the spectrum switching and improve end-to-end throughput by up to 45%.