Inter-Cell Interference Coordination in OFDMA Networks: A Novel Approach Based on Integer Programming

Rahman, Mahmudur; Yanıkömeroğlu, Halim

doi:10.1109/vetecs.2010.5493662

Cited by 15 publications

(35 citation statements)

References 12 publications

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“…Any optimal or suboptimal RRM with an objective function to maximize user throughput in a networkwide range will avoid these disadvantaged users, since their part to the overall throughput is minimal [39]. Therefore, by employing selective interference avoidance on such users, the network can effectively extend their minimum data rates.…”

Section: General Problem Formulation Of Icic In Multi-cell Ofdmamentioning

confidence: 99%

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On Interference Avoidance Through Inter-Cell Interference Coordination (ICIC) Based on OFDMA Mobile Systems

Kosta

Hunt

Quddus

et al. 2013

IEEE Commun. Surv. Tutorials

152

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Abstract-The widely accepted OFDMA air interface technology has recently been adopted in most mobile standards by the wireless industry. However, similar to other frequencytime multiplexed systems, their performance is limited by intercell interference. To address this performance degradation, interference mitigation can be employed to maximize the potential capacity of such interference-limited systems. This paper surveys key issues in mitigating interference and gives an overview of the recent developments of a promising mitigation technique, namely, interference avoidance through inter-cell interference coordination (ICIC). By using optimization theory, an ICIC problem is formulated in a multi-cell OFDMA-based system and some research directions in simplifying the problem and associated challenges are given. Furthermore, we present the main trends of interference avoidance techniques that can be incorporated in the main ICIC formulation. Although this paper focuses on 3GPP LTE/LTE-A mobile networks in the downlink, a similar framework can be applied for any typical multi-cellular environment based on OFDMA technology. Some promising future directions are identified and, finally, the state-of-the-art interference avoidance techniques are compared under LTEsystem parameters.Index Terms-ICIC, Inter-cell resource allocation, Selective interference avoidance, Selective frequency/power reuse.

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Section: General Problem Formulation Of Icic In Multi-cell Ofdmamentioning

confidence: 99%

“…Another way to reduce the computational complexity of above ICIC formulation is to break it down into several subproblems at a time with a small set of interfering eNBs and allocated RBs [39]. Furthermore, the ICIC problem can be seen as a combined problem of two smaller sub-problems i.e.…”

Section:    mentioning

confidence: 99%

On Interference Avoidance Through Inter-Cell Interference Coordination (ICIC) Based on OFDMA Mobile Systems

Kosta

Hunt

Quddus

et al. 2013

IEEE Commun. Surv. Tutorials

152

View full text Add to dashboard Cite

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“…The large scale path-loss attenuation including antenna gain, penetration loss, shadowing and fast fading is expressed in the following form [14],…”

Section: System Modelmentioning

confidence: 99%

“…The antenna gain A is defined by horizontal antenna pattern [14]. The large scale path-loss attenuation of directed channels G in 0n is defined by Equation (2).…”

Section: System Modelmentioning

confidence: 99%

Maximization of the Minimum Rate by Geometric Programming for Multiple Users in Partial Frequency Reuse Cellular Networks

Krasniqi

Mecklenbräuker

2011

2011 IEEE Vehicular Technology Conference (VTC Fall)

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We apply constrained optimization techniques to optimally allocate the bandwidth and power to the users in a cellular network. Partial frequency reuse with multiple users in the inner region and the outer region is considered as inter-cell interference mitigation scheme. We show that the maximization of the minimum rate under variable bandwidth and variable power can be transformed into a geometric programming problem and solved efficiently using disciplined convex programming. CVX is used to solve the transformed optimization problem. The optimal solution assigns all available bandwidth to the inner and the outer users and only the satisfactory level of power that the users achieve higher rates that the minimum required rate.

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“…We investigate low-complexity approaches which can be solved via either binary linear programming or linear programming relaxation. In [3], the authors proposed a formulation on ICIC that achieves a global optimum for OFDMA-based networks; however, no comparison is given with the state-of-art interference avoidance schemes. In addition, the global ICIC is not suitable for largescale multi-cell networks, such as heterogeneous network (HetNets), since it is overly complex and difficult to solve considering the large number of parameters involved.…”

Section: Introductionmentioning

confidence: 99%

A Low-Complexity Distributed Inter-Cell Interference Coordination (ICIC) Scheme for Emerging Multi-Cell HetNets

Kosta

Hunt

Quddus

et al. 2012

2012 IEEE Vehicular Technology Conference (VTC Fall)

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In this paper, we propose a low-complexity distributed Inter-Cell Interference Coordination (ICIC) for emerging multicell HetNets (Heterogeneous Networks). The proposed scheme is quickly solved using linear programming tools and aims to maximize both the critical and the overall performance of the multi-cell system. Additionally, a utility measure is used to provide a varying level of user fairness to satisfy the most demanding network providers. Simulation results confirm the low-complexity of the proposed algorithm and its increased effectiveness over a number of state-of-art interference avoidance schemes.

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Inter-Cell Interference Coordination in OFDMA Networks: A Novel Approach Based on Integer Programming

Cited by 15 publications

References 12 publications

On Interference Avoidance Through Inter-Cell Interference Coordination (ICIC) Based on OFDMA Mobile Systems

On Interference Avoidance Through Inter-Cell Interference Coordination (ICIC) Based on OFDMA Mobile Systems

Maximization of the Minimum Rate by Geometric Programming for Multiple Users in Partial Frequency Reuse Cellular Networks

A Low-Complexity Distributed Inter-Cell Interference Coordination (ICIC) Scheme for Emerging Multi-Cell HetNets

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