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Cell Selection and Resource Allocation for Interference Management in a Macro-Picocell Heterogeneous Network

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Abstract

A heterogeneous network (HetNet) based on the long-term evolution advanced standard has been developed to improve the system performance; in this HetNet, macrocells and low-power nodes, such as picocells, coexist. Further, cell range expansion has been introduced to encourage data offloading in a HetNet. In this paper, we propose a cell selection scheme based on the signal-to-interference-plus-noise ratio to achieve an optimal offloading effect. We also propose a resource allocation scheme in the frequency and time domains, to reduce interference in a HetNet. In the frequency domain, the macrocells allocate a frequency band by using soft frequency reuse, and the picocells choose the sub-bands that are not used in the macrocell sector, to avoid interference. In addition, we found that it was difficult to allocate a limited frequency resource. Therefore, the cross-tier interference can be managed by using an almost blank subframe (ABS) with a flexible ABS ratio, to improve spectrum efficiency in the time domain. The simulation results show that the proposed schemes can improve the spectrum efficiency of both the macro-user equipment and the pico-user equipment, as well as improve the overall UE performance.

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Acknowledgments

This research was supported by the MSIP(Ministry of Science, ICT and Future Planning), Korea, under the ITRC(Information Technology Research Center) support program (NIPA-2014-H0301-14-1014) supervised by the NIPA(National IT Industry Promotion Agency). This research was supported by Basic Science Research Program through the National Research Foundation of Korea(NRF) funded by the Ministry of Education(NRF-2013R1A1A2007779).

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Authors and Affiliations

  1. Department of Electronics and Computer Engineering, Chonnam National University, 300 Yongbongdong, Bukgu, Gwangju, 500-757, Republic of Korea

    Sangmi Moon, Bora Kim, Saransh Malik & Intae Hwang

  2. Department of Information and Communications Engineering, Myongji University, San 38-2 Namdong, Cheoingu, Yongin, Gyeonggi-Do, 449-728, Republic of Korea

    Cheolwoo You

  3. School of Electrical Engineering and Computer Science, Oregon State University, Corvallis, OR, 97331-3211, USA

    Huaping Liu

  4. Department of Electronics Engineering, Ewha Womans University, 11-1 Daehyundong, Seodaemungu, Seoul, 120-750, Republic of Korea

    Jeong-Ho Kim

  5. Communications and Internet Research Laboratory, Electronics and Telecommunications Research Institute, 218 Gajeong-ro, Yuseong-gu, Daejeon, 305-700, Republic of Korea

    Jihyung Kim

Authors
  1. Sangmi Moon
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  2. Bora Kim
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  3. Saransh Malik
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  4. Cheolwoo You
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  5. Huaping Liu
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  6. Jeong-Ho Kim
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  7. Jihyung Kim
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  8. Intae Hwang
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Correspondence to Intae Hwang.

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Moon, S., Kim, B., Malik, S. et al. Cell Selection and Resource Allocation for Interference Management in a Macro-Picocell Heterogeneous Network. Wireless Pers Commun 83, 1887–1901 (2015). https://doi.org/10.1007/s11277-015-2489-9

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