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A New Cellular Network Structure Deploying Shared Relays with Sectorization

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Abstract

To mitigate inter-cell interference, which causes throughput degradation for cell-edge users, a shared relay with sector antennas that are connected to neighboring base stations (BSs) with optical cable is deployed in the cell boundary. Each sector of the shared relays can be considered a remote antenna directed to the connected BS. By controlling the transmit power, inter-cell interference can be mitigated and high-throughput performance can be achieved. Additionally, better handover performance can be obtained by reducing unnecessary handovers caused by ambiguity in the cell boundary. Through computer simulations with the hexagonal cell structure and the proposed shared relay with three sectors, performance gain of the proposed system deployment was verified.

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Notes

  1. When BSs have more sectors, SRs have the same number of sectors. Even in cases, performance gains in terms of throughput and handover can be obtained by deploying SRs. This gain is caused not only by interference reduction but also by higher desired signal power due to higher antenna gain of sector antennas.

  2. This means that a single subcarrier in orthogonal frequency division multiple access (OFDMA) systems is taken into consideration.

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Acknowledgments

This research was supported by Basic Science Research Program through the National Research Foundation of Korea(NRF) funded by the Ministry of Science, ICT & Future Planning(NRF-2014R1A1A1002179).

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Authors and Affiliations

  1. Network Technology R&D Center, SK Telecom, Seoul, Republic of Korea

    Sungmin Cho & Youngseok Oh

  2. Department of Information and Communication Engineering, Yeungnam University, Gyeongsan, 712-749, Republic of Korea

    Heejung Yu

  3. Department of Information and Communication Engineering, Gyeongsang National University, Tongyeong, Republic of Korea

    Woongsup Lee

Authors
  1. Sungmin Cho
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  2. Youngseok Oh
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  3. Heejung Yu
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  4. Woongsup Lee
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Correspondence to Heejung Yu.

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Cho, S., Oh, Y., Yu, H. et al. A New Cellular Network Structure Deploying Shared Relays with Sectorization. Wireless Pers Commun 94, 2987–2999 (2017). https://doi.org/10.1007/s11277-016-3761-3

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