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Resource Allocation Based on Channel Sensing and Spatial Spectrum Reuse for Cognitive Femtocells

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Abstract

A cognitive femtocell is a new small cell based on a smart home base station to solve the spectrum-scarcity problem. Recently, dedicated resource allocation for cognitive femtocell to mitigate co-channel interference is extensively researched. However, the cognitive femtocell may suffer from the lack of frequency resource for its users due to high data traffic load of the macrocell. We propose a novel resource allocation and power control mechanism using spatial frequency reuse and spectrum sensing, which enables femto users in the cognitive femtocell to obtain more feasible resource. We analyze and evaluate the performance gain of the proposed scheme. Although data traffic load of the macrocell increases, the capacity of the cognitive femtocell can be maintained appropriately by the proposed resource allocation and power control scheme and it is shown that the performance is improved compared to that of the conventional scheme.

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Acknowledgements

This research was supported by Basic Science Research Program through NRF of Korea, funded by MOE(NRF-2010-0020210), and by the KU Research Professor Program of Konkuk University.

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Authors and Affiliations

  1. Konkuk University, Seoul, 05029, Korea

    Duckdong Hwang

  2. Samsung Electronics, Suwon, 16677, Korea

    Sukgi Hong & Chang-Yeong Oh

  3. College of Information and Communication Engineering, Sungkyunkwan University, Suwon, 16419, Korea

    Sukgi Hong, Chang-Yeong Oh & Tae-Jin Lee

Authors
  1. Duckdong Hwang
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  2. Sukgi Hong
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  3. Chang-Yeong Oh
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  4. Tae-Jin Lee
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Correspondence to Tae-Jin Lee.

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Hwang, D., Hong, S., Oh, CY. et al. Resource Allocation Based on Channel Sensing and Spatial Spectrum Reuse for Cognitive Femtocells. Wireless Pers Commun 97, 2249–2268 (2017). https://doi.org/10.1007/s11277-017-4606-4

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  • DOI: https://doi.org/10.1007/s11277-017-4606-4

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