[논문]Performance analysis of satellite and terrestrial spectrum-shared networks with directional antenna

Yeom, Jeong Seon; Noh, Gosan; Chung, Heesang; Kim, Ilgyu; Jung, Bang Chul

doi:10.4218/etrij.2020-0185

[국내논문] Performance analysis of satellite and terrestrial spectrum-shared networks with directional antenna 원문보기

ETRI journal, v.42 no.5, 2020년, pp.712 - 720

Yeom, Jeong Seon (Department of Electronics Engineering, Chungnam National University) , Noh, Gosan (Future Mobile Communication Research Division, Electronics and Telecommunications Research Institute) , Chung, Heesang (Future Mobile Communication Research Division, Electronics and Telecommunications Research Institute) , Kim, Ilgyu (Future Mobile Communication Research Division, Electronics and Telecommunications Research Institute) , Jung, Bang Chul (Department of Electronics Engineering, Chungnam National University)

Abstract ▼ AI-Helper

Recently, to make the best use of limited and precious spectrum resources, spectrum sharing between satellite and cellular networks has received much interest. In this study, we mathematically analyze the success probability of a fixed (satellite) earth station (FES) based on a stochastic geometry framework. Both the FES and base stations (BSs) are assumed to be equipped with a directional antenna, and the location and the number of BSs are modeled based on the Poisson point process. Furthermore, an exclusion zone is considered, in which the BSs are prohibited from locating in a circular zone with a certain radius around the FES to protect it from severe interference from the cellular BSs. We validate the analytical results on the success probability of the cognitive satellite-terrestrial network with directional antennas by comparing it using extensive computer simulations and show the effect of the exclusion zone on the success probability at the FES. It is shown that the exclusion zone-based interference mitigation technique significantly improves the success probability as the exclusion zone increases.

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가설 설정

1. For practical cellular networks, we consider the directional antenna gain in characterizing the interference from cellular to satellite networks.

제안 방법

In this study, we use the SG framework to mathematically analyze the success probability of the FES in a satellite and terrestrial spectrum-shared network where the cellular downlink is allowed to use the same frequency as that used by the satellite station (SS) downlink. We assume that all cellular BSs and the FES are equipped with directional antennas, and the locations of cellular BSs are modeled using a PPP.
In this section, we mathematically analyze the success probability of FES in the coexistence of FSS and cellular network with the exclusion zone, where BSs are distributed based on the PPP. The success probability (9) is given as a tractable form as follows:
In this study, the performance of a satellite and terrestrial spectrum-shared network with directional antennas was mathematically analyzed based on an SG framework. In particular, the success probability of an FES was investigated by considering the interference from multiple BSs.

성능/효과

2. The interference mitigation technique based on an exclusion zone is considered for the spectrum-shared network, and its performance is mathematically characterized.

참고문헌 (20)

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상세보기
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[국내논문] Performance analysis of satellite and terrestrial spectrum-shared networks with directional antenna 원문보기

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[국내논문] Performance analysis of satellite and terrestrial spectrum-shared networks with directional antenna 원문보기

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