Optimal muting ratio for Enhanced Inter-Cell Interference Coordination (eICIC) in HetNets

Lembo, Sergio; Lundén, Petteri; Tirkkonen, Olav; Valkealahti, Kimmo

doi:10.1109/iccw.2013.6649409

Cited by 14 publications

(18 citation statements)

References 4 publications

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“…ABS pattern selection is considered in several papers, e.g., [3,10,25,29,44], where various methods are proposed to dynamically determine the most suitable ABS ratio value, depending on the specific goals and the assumptions used. In addition, because of their strong correlation, the REB and the ABS pattern can also be jointly optimized, as outlined in [6,11].…”

Section: Enhanced Icicmentioning

confidence: 99%

Interference Management in HetNets

Marabissi

Fantacci

2015

SpringerBriefs in Electrical and Computer Engineering

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Section: Enhanced Icicmentioning

confidence: 99%

Interference Management in HetNets

Marabissi

Fantacci

2015

SpringerBriefs in Electrical and Computer Engineering

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“…For Step 2, we propose an ABSF calculation mechanism in order to select the appropriate muted rate required for the VMUEs. The previous work [21], [22] derived the optimal ABSF ratio based on the number of users, including macro users and femtocell users, but this configuration may not guarantee the network performance requirement. In this paper, the optimal ABSF ratio is derived based on the QoS of all the MUEs in order to satisfy the MUE performance requirement, but limit the effect on the HUE performance requirement.…”

Section: Absf Computation For Aggressor Henbsmentioning

confidence: 99%

Cooperative Interference Mitigation Algorithm in Heterogeneous Networks

Kwon

Oh³

2015

IEICE Trans. Commun.

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Heterogeneous hetworks (HetNets) have been introduced as an emerging technology in order to meet the increasing demand for mobile data. HetNets are a combination of multi-layer networks such as macrocells and small cells. In such networks, users may suffer significant cross-layer interference. To manage this interference, the 3rd Generation Partnership Project (3GPP) has introduced enhanced Inter-Cell Interference Coordination (eICIC) techniques. Almost Blank SubFrame (ABSF) is one of the time-domain techniques used in eICIC solutions. We propose a dynamically optimal Signal-to-Interference-and-Noise Ratio (SINR)-based ABSF framework to ensure macro user performance while maintaining small user performance. We also study cooperative mechanisms to help small cells collaborate efficiently in order to reduce mutual interference. Simulations show that our proposed scheme achieves good performance and outperforms the existing ABSF frameworks.Comment: key words: eICIC, ABSF, Interference Mitigation, Small Cell, HetNets, IEICE TRANSACTIONS on Communications, Copyright @2015 The Institute of Electronics, Information and Communication Engineer

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“…To fairly compare the performance, we assumed that the eICIC scheme employs the same scheduling process described in Section 3 and determines the ABS rate such that the network-wide PF is maximized for a given value of CRE bias unless stated otherwise [9,10].…”

Section: Simulation Assumptionsmentioning

confidence: 99%

“…Thus, several schemes have been proposed to maximize the sum of users' utilities in the network (i.e., network-wide utility) through adapting the ABS rate and determining users that should receive the resource within the ABS or non-ABS [8][9][10]. However, it is unlikely that these schemes effectively balance the loads among the macro-cells and the small cells.…”

Section: Introductionmentioning

confidence: 99%

Recursive load balance scheme for two-tier cellular networks using enhanced inter-cell interference coordination

Hong

Park

2015

J Wireless Com Network

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Two-tier cellular networks in which small cells are overlaid with macro-cells have attracted considerable attention because these networks are expected to accommodate the rapidly increasing mobile traffic. Enhanced inter-cell interference coordination (eICIC) has also been proposed to further enhance the overall system performance by offloading more macro-cell users to small cells. Even with this approach, it is likely that macro-cell users are effectively offloaded to the small cells in the network because of the following reasons: i) some macro-cell users are offloaded to small cells by simply comparing their received signal strengths, and ii) the almost blank subframe (ABS) in the small cell is strictly assigned to users who experience strong interference from its nearby macro-cells. In this paper, we propose a load balance scheme for improving the downlink network-wide proportional fairness (PF) for two-tier cellular networks using eICIC. In particular, employing a cumulative distribution function-based scheduling scheme that supports sharing ABS across all users in each small cell, the proposed scheme recursively combines i) the user association between the cells and ii) ABS rate adaptation to improve the network PF. Through system-level simulations, we demonstrate that the proposed scheme noticeably improves the network PF compared to the eICIC scheme regardless of the number of macro-cell users offloaded to small cells.

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Optimal muting ratio for Enhanced Inter-Cell Interference Coordination (eICIC) in HetNets

Cited by 14 publications

References 4 publications

Interference Management in HetNets

Interference Management in HetNets

Cooperative Interference Mitigation Algorithm in Heterogeneous Networks

Recursive load balance scheme for two-tier cellular networks using enhanced inter-cell interference coordination

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