Earticle

초록

영어

Recently, significant growth in the applications of the wireless sensor networks (WSNs) operating in unlicensed spectrum bands has been made. In the meantime, existing unlicensed bands are becoming congested and overcrowded. On the other hand, Cognitive Radio (CR) technology has been proposed as the key technology for future wireless communication that exploits dynamic spectrum access strategies. Since this offers more flexible way to utilize the wireless spectrum than traditional radio technology based on a fixed spectrum access policy, it is thought that the key feature of cognitive radio, i.e., dynamic spectrum access can be applied in WSNs to access the underutilized spectrum bands to transmit their readings in an opportunistic manner to the next hops and finally to the sink. In cognitive radio sensor networks (CRSNs), obtaining the information about spectrum holes on channel, negotiating among primary users and secondary users for spectrum allocation, synchronizing transmission parameters are the important functions of CR medium access control protocols. In this paper, we mainly focus on investigating the major issues to be considered with the existing communication protocols and algorithms devised while realizing the cognitive capability into wireless sensor networks. We also discuss the main challenges on the basis of dynamic spectrum management and extra energy expenditure to apply the cognitive capability into wireless sensor networks.

목차

Abstract
 1. Introduction
 2. Extra Energy Expenditure
 3. Spectrum management in CRSN
 4. Discussion and Open Research Issues
 5. Conclusion
 Acknowledgements
 References

키워드

저자

• Prasain Prakash [ Department of Information and Communication Engineering, Chosun University ]
• Seong-Ro Lee [ Department of Information and Electronics Engineering, Mokpo National University ]
• Sun-Kok Noh [ Department of Photoelectronics Information, Chosun College of Science & Technology ]
• Dong-You Choi [ Department of Information and Communication Engineering, Chosun University ] Corresponding Author

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Control and Automation

• 간기

  월간

• pISSN

  2005-4297

• 수록기간

  2008~2016

• 십진분류

  KDC 505 DDC 605