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학술지 Channel Selection for Spectrum Sharing in Wireless Networks
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저자
박재철, 강규민, 박승근
발행일
201610
출처
ETRI Journal, v.38 no.5, pp.952-961
ISSN
1225-6463
출판사
한국전자통신연구원 (ETRI)
DOI
https://dx.doi.org/10.4218/etrij.16.2616.0007
협약과제
15MR3700, (통합)모바일 빅뱅 시대의 주파수 효율 개선 핵심 기술 개발, 최형도
초록
In this paper, we study a spectrum sharing network (SSN) where a spectrum sharing device (SSD) coexists with multiple wireless communication systems (WCSs) in the same channel. The SSD can operate with either a duty cycle (DC) channel access mechanism or a listen-beforetalk (LBT) channel access mechanism, whereas WCSs operate with an LBT mechanism. An opportunistic channel selection scheme for the SSD in the SSN is first proposed to minimize the outage probability. The optimal data transmission time for the DC-based SSD is derived to further improve the outage probability. We also derive the exact and closed-form outage probability of the proposed channel selection in the SSN by assuming that the number of WCSs operating in each channel is uniformly distributed. The simulation results show that the proposed channel selection scheme outperforms other channel selection schemes. It was also observed that a DC-based SSD with an optimal data transmission time provides a better outage performance than an LBT-based SSD. As the number of available channels increases, the channel selection scheme plays an important role in minimizing the outage probability of the SSNs.
키워드
Channel selection, Duty cycle, Listen-beforetalk, Outage probability, Spectrum sharing
KSP 제안 키워드
Channel Access(CA), Channel access mechanism, Data transmission time, Duty cycle(DC), Opportunistic channel selection, Outage probability(OP), Uniformly distributed, Wireless communication system, Wireless network, closed-form, outage performance