Dynamic Fractional Base Station Cooperation Using Shared Distributed Remote Radio Units for Advanced Cellular Networks

Naoki KUSASHIMA; Ian Dexter GARCIA; Kei SAKAGUCHI; Kiyomichi ARAKI; Shoji KANEKO; Yoji KISHI

doi:10.1587/transcom.E94.B.3259

Dynamic Fractional Base Station Cooperation Using Shared Distributed Remote Radio Units for Advanced Cellular Networks

Naoki KUSASHIMA, Ian Dexter GARCIA, Kei SAKAGUCHI, Kiyomichi ARAKI, Shoji KANEKO, Yoji KISHI

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Traditional cellular networks suffer the so-called “cell-edge problem” in which the user throughput is deteriorated because of pathloss and inter-cell (co-channel) interference. Recently, Base Station Cooperation (BSC) was proposed as a solution to the cell-edge problem by alleviating the interference and improving diversity and multiplexing gains at the cell-edge. However, it has minimal impact on cell-inner users and increases the complexity of the network. Moreover, static clustering, which fixes the cooperating cells, suffers from inter-cluster interference at the cluster-edge. In this paper, dynamic fractional cooperation is proposed to realize dynamic clustering in a shared RRU network. In the proposed algorithm, base station cooperation is performed dynamically at cell edges for throughput improvement of users located in these areas. To realize such base station cooperation in large scale cellular networks, coordinated scheduling and distributed dynamic cooperation are introduced. The introduction of coordinated scheduling in BSC multi-user MIMO not only maximizes the performance of BSC for cell-edge users but also reduces computational complexity by performing simple single-cell MIMO for cell-inner users. Furthermore, the proposed dynamic clustering employing shared RRU network realizes efficient transmission at all cell edges by forming cooperative cells dynamically with minimal network complexity. Owing to the combinations of the proposed algorithms, dynamic fractional cooperation achieves high network performance at all areas in the cellular network. Simulation results show that the cell-average and the 5% cell-edge user throughput can be significantly increased in practical cellular network scenarios.

Publication: IEICE TRANSACTIONS on Communications Vol.E94-B No.12 pp.3259-3271

Publication Date: 2011/12/01

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Online ISSN: 1745-1345

DOI: 10.1587/transcom.E94.B.3259

Type of Manuscript: Special Section PAPER (Special Section on Cooperative Communications for Cellular Networks)

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Naoki KUSASHIMA, Ian Dexter GARCIA, Kei SAKAGUCHI, Kiyomichi ARAKI, Shoji KANEKO, Yoji KISHI, "Dynamic Fractional Base Station Cooperation Using Shared Distributed Remote Radio Units for Advanced Cellular Networks" in IEICE TRANSACTIONS on Communications, vol. E94-B, no. 12, pp. 3259-3271, December 2011, doi: 10.1587/transcom.E94.B.3259.
Abstract: Traditional cellular networks suffer the so-called “cell-edge problem” in which the user throughput is deteriorated because of pathloss and inter-cell (co-channel) interference. Recently, Base Station Cooperation (BSC) was proposed as a solution to the cell-edge problem by alleviating the interference and improving diversity and multiplexing gains at the cell-edge. However, it has minimal impact on cell-inner users and increases the complexity of the network. Moreover, static clustering, which fixes the cooperating cells, suffers from inter-cluster interference at the cluster-edge. In this paper, dynamic fractional cooperation is proposed to realize dynamic clustering in a shared RRU network. In the proposed algorithm, base station cooperation is performed dynamically at cell edges for throughput improvement of users located in these areas. To realize such base station cooperation in large scale cellular networks, coordinated scheduling and distributed dynamic cooperation are introduced. The introduction of coordinated scheduling in BSC multi-user MIMO not only maximizes the performance of BSC for cell-edge users but also reduces computational complexity by performing simple single-cell MIMO for cell-inner users. Furthermore, the proposed dynamic clustering employing shared RRU network realizes efficient transmission at all cell edges by forming cooperative cells dynamically with minimal network complexity. Owing to the combinations of the proposed algorithms, dynamic fractional cooperation achieves high network performance at all areas in the cellular network. Simulation results show that the cell-average and the 5% cell-edge user throughput can be significantly increased in practical cellular network scenarios.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.E94.B.3259/_p

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@ARTICLE{e94-b_12_3259,
author={Naoki KUSASHIMA, Ian Dexter GARCIA, Kei SAKAGUCHI, Kiyomichi ARAKI, Shoji KANEKO, Yoji KISHI, },
journal={IEICE TRANSACTIONS on Communications},
title={Dynamic Fractional Base Station Cooperation Using Shared Distributed Remote Radio Units for Advanced Cellular Networks},
year={2011},
volume={E94-B},
number={12},
pages={3259-3271},
abstract={Traditional cellular networks suffer the so-called “cell-edge problem” in which the user throughput is deteriorated because of pathloss and inter-cell (co-channel) interference. Recently, Base Station Cooperation (BSC) was proposed as a solution to the cell-edge problem by alleviating the interference and improving diversity and multiplexing gains at the cell-edge. However, it has minimal impact on cell-inner users and increases the complexity of the network. Moreover, static clustering, which fixes the cooperating cells, suffers from inter-cluster interference at the cluster-edge. In this paper, dynamic fractional cooperation is proposed to realize dynamic clustering in a shared RRU network. In the proposed algorithm, base station cooperation is performed dynamically at cell edges for throughput improvement of users located in these areas. To realize such base station cooperation in large scale cellular networks, coordinated scheduling and distributed dynamic cooperation are introduced. The introduction of coordinated scheduling in BSC multi-user MIMO not only maximizes the performance of BSC for cell-edge users but also reduces computational complexity by performing simple single-cell MIMO for cell-inner users. Furthermore, the proposed dynamic clustering employing shared RRU network realizes efficient transmission at all cell edges by forming cooperative cells dynamically with minimal network complexity. Owing to the combinations of the proposed algorithms, dynamic fractional cooperation achieves high network performance at all areas in the cellular network. Simulation results show that the cell-average and the 5% cell-edge user throughput can be significantly increased in practical cellular network scenarios.},
keywords={},
doi={10.1587/transcom.E94.B.3259},
ISSN={1745-1345},
month={December},}

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TY - JOUR
TI - Dynamic Fractional Base Station Cooperation Using Shared Distributed Remote Radio Units for Advanced Cellular Networks
T2 - IEICE TRANSACTIONS on Communications
SP - 3259
EP - 3271
AU - Naoki KUSASHIMA
AU - Ian Dexter GARCIA
AU - Kei SAKAGUCHI
AU - Kiyomichi ARAKI
AU - Shoji KANEKO
AU - Yoji KISHI
PY - 2011
DO - 10.1587/transcom.E94.B.3259
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E94-B
IS - 12
JA - IEICE TRANSACTIONS on Communications
Y1 - December 2011
AB - Traditional cellular networks suffer the so-called “cell-edge problem” in which the user throughput is deteriorated because of pathloss and inter-cell (co-channel) interference. Recently, Base Station Cooperation (BSC) was proposed as a solution to the cell-edge problem by alleviating the interference and improving diversity and multiplexing gains at the cell-edge. However, it has minimal impact on cell-inner users and increases the complexity of the network. Moreover, static clustering, which fixes the cooperating cells, suffers from inter-cluster interference at the cluster-edge. In this paper, dynamic fractional cooperation is proposed to realize dynamic clustering in a shared RRU network. In the proposed algorithm, base station cooperation is performed dynamically at cell edges for throughput improvement of users located in these areas. To realize such base station cooperation in large scale cellular networks, coordinated scheduling and distributed dynamic cooperation are introduced. The introduction of coordinated scheduling in BSC multi-user MIMO not only maximizes the performance of BSC for cell-edge users but also reduces computational complexity by performing simple single-cell MIMO for cell-inner users. Furthermore, the proposed dynamic clustering employing shared RRU network realizes efficient transmission at all cell edges by forming cooperative cells dynamically with minimal network complexity. Owing to the combinations of the proposed algorithms, dynamic fractional cooperation achieves high network performance at all areas in the cellular network. Simulation results show that the cell-average and the 5% cell-edge user throughput can be significantly increased in practical cellular network scenarios.
ER -