4th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications

Research Article

Seamless spectrum handover improving cell outage in cognitive radio systems

Cite
BibTeX Plain Text
  • @INPROCEEDINGS{10.1109/CROWNCOM.2009.5189217,
    author={Ohyun Jo and Hyun   Ho Choi and Dong-Ho   Cho },
    title={Seamless spectrum handover improving cell outage in cognitive radio systems},
    proceedings={4th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications},
    publisher={IEEE},
    proceedings_a={CROWNCOM},
    year={2009},
    month={8},
    keywords={},
    doi={10.1109/CROWNCOM.2009.5189217}
}
  • Ohyun Jo
    Hyun Ho Choi
    Dong-Ho Cho
    Year: 2009
    Seamless spectrum handover improving cell outage in cognitive radio systems
    CROWNCOM
    IEEE
    DOI: 10.1109/CROWNCOM.2009.5189217
Ohyun Jo1,*, Hyun Ho Choi2,*, Dong-Ho Cho 1,*
  • 1: School of Electrical Engineering and Computer Science, Korea Advanced Institute of Science and Technology (KAIST), Yuseong-gu, Daejeon, Korea
  • 2: Samsung Advanced Institute of Technology (SAIT)
*Contact email: ohjo@comis.kaist.ac.kr, hyun.ho.choi@samsung.com, dhcho@ee.kaist.ac.kr

Abstract

In cognitive radio systems, there is a concern of service disruption because of spectrum handover. Spectrum handover occurs when a secondary user changes frequency due to the appearance of a primary user. Spectrum handover can be frequent if a cognitive radio system operates in a wide spectrum band. In this case, spectrum handover may drastically degrade the performance of cognitive radio systems because of the different propagation loss according to the usage of different frequency. Here, we propose a seamless spectrum handover scheme. The proposed handover scheme can avoid service disruption and can reduce redundant handovers. The efficiency of the proposed scheme is validated by simulation results.

Published
2009-08-04
Publisher
IEEE
http://dx.doi.org/10.1109/CROWNCOM.2009.5189217
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