Adaptive Fractional Time Reuse for Multi-Cell OFDMA Networks

Cho, Yun Hee; Seo, Seok; Song, Jae-Su; Lee, Seung Hwan; Lee, Hwang S.

doi:10.1109/lcomm.2013.072313.131230

Cited by 8 publications

(2 citation statements)

References 9 publications

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“…Figure 1(a) shows a cluster of three adjacent cells, where the FFR scheme is used. Another version of FFR in the time domain, called (FTR) is proposed in [4].…”

Section: Introductionmentioning

confidence: 99%

Autonomous and dynamic inter-cell interference coordination techniques for future wireless networks

Ezzaouia

Gueguen

Yassin

et al. 2017

2017 IEEE 13th International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob)

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Inter-Cell Interference Coordination (ICIC) techniques are proposed as solutions to alleviate the negative impact of interference on system performance, while enhancing the provided Quality of Service (QoS). Typically, the available bandwidth is divided into inner and edge sub-bands. Users are also classified into interior and edge users. The available resources in each zone are exclusively allocated to users belonging to this zone. Mobile users classification is usually based on a threshold that can be either a given mean SINR value or a given distance. However, ICIC approaches based on these static parameters cannot efficiently manage non-homogeneous distribution of users. In this paper, we introduce a dynamic handoff algorithm that aims to adapt static ICIC schemes to uneven distribution of users. Our new solution dynamically computes the classification of active users into interior and edge users, based on a heuristic load balancing algorithm. In our proposal, each cell autonomously reconfigures its bandwidth allocation constraints without modifying bandwidth repartition across the cellular network. This makes the solution well adapted to the non-uniform repartition of users at the multicell scale. Simulation results show that the proposed scheme improves bandwidth usage, reduces packet delay, and increases user satisfaction compared to state-of-the-art ICIC techniques.

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“…Figure 1(a) shows a cluster of three adjacent cells, where the FFR scheme is used. Another version of FFR in the time domain, called (FTR) is proposed in [4].…”

Section: Introductionmentioning

confidence: 99%

Autonomous and dynamic inter-cell interference coordination techniques for future wireless networks

Ezzaouia

Gueguen

Yassin

et al. 2017

2017 IEEE 13th International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob)

View full text Add to dashboard Cite

show abstract

“…The works in [3,4] proposed interference management schemes by switching off the nearest cells. The authors in [5,6] proposed inter-cell interference (ICI) management by exploiting adaptive fractional time reuse (FTR) instead of fractional frequency reuse (FFR). However, these works focused on improving edge user performance and neglected considering energy efficiency.…”

Section: Introductionmentioning

confidence: 99%

On Optimal Cell Flashing for Reducing Delay and Saving Energy in Wireless Networks

Jeong¹,

Kim²

2016

Energies

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To save energy from cellular networks or to increase user-perceived performance, studying base station (BS) switching on-off is actively ongoing. However, many studies focus on the tradeoff between energy efficiency and user-perceived performance. In this paper, we propose a simple technique called cell flashing. Cell flashing means that base stations are turned on and off periodically and rapidly so that, when one base station is turned on, the adjacent base stations which make interferences are always off. Thus, both energy efficiency and cell edge user performances can be improved. In general, switching off base stations to save energy can lead to longer file download time (or delay) to customers. Using flow-level dynamics, we analyze average delay and energy consumption of cellular networks when cell flashing is used. We show that both of total energy consumption and average flow-level delay decrease in the case of small cells. Extensive simulations confirm that cell flashing can significantly save the energy of the base stations, e.g., by up to 25% and, at the same time, reduce the average delay by up to 75%.

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A Dynamic Inter-cellular Bandwidth Fair Sharing scheduler for future wireless networks

Ezzaouia

Gueguen

Ammar

et al. 2017

Physical Communication

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Adaptive Fractional Time Reuse for Multi-Cell OFDMA Networks

Cited by 8 publications

References 9 publications

Autonomous and dynamic inter-cell interference coordination techniques for future wireless networks

Autonomous and dynamic inter-cell interference coordination techniques for future wireless networks

On Optimal Cell Flashing for Reducing Delay and Saving Energy in Wireless Networks

A Dynamic Inter-cellular Bandwidth Fair Sharing scheduler for future wireless networks

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