Performance Analysis of Downlink Inter Cell Interference Coordination in the LTE-Advanced System

Kim, Sang Goo; Cho, Kyongkuk; Yoon, Dongweon; Ko, Young-Jo; Kwon, Jong-Kee

doi:10.1109/icdt.2009.13

Cited by 13 publications

(4 citation statements)

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“…Thus, in LTE Intercell Interference Coordination (ICIC) techniques [4] are introduced to prevent CCH failures. The time domain ICIC procedure, protected subframes (PSF), partially mutes macro eNodeBs to allow pico eNodeBs to schedule their UEs in these time periods with less interference.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Cell Size Adaptation and Intercell Interference Coordination in LTE HetNets

Erlinghagen

Dusza

Wietfeld

et al. 2013

2013 IEEE 78th Vehicular Technology Conference (VTC Fall)

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LTE heterogeneous networks (HetNets) are deployed in areas of high user density in order to increase the capacity in the cellular mobile network. However, they are raising two problems: fixed cell sizes and interference. In our work, we propose a technique, which is maximizing the throughput of the users while considering fairness, dynamically adapting cell sizes and reducing interferences. Moreover, we included the concept of cell selection offsets (CSOs) for the adaptation of the cell sizes and we applied protected subframes, a time domain intercell interference coordination technique in LTE advanced. In our results, we consider the system throughput and the 5-percentile UE throughput and show, that our technique outperforms the best static HetNet configurations achieving a gain up to 16.5% in terms of the fairness based system throughput and a gain up to 37.0% in the 5-percentile UE throughput.

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Section: Introductionmentioning

confidence: 99%

Dynamic Cell Size Adaptation and Intercell Interference Coordination in LTE HetNets

Erlinghagen

Dusza

Wietfeld

et al. 2013

2013 IEEE 78th Vehicular Technology Conference (VTC Fall)

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“…However, for the inter-cell interference (ICI), when the frequency resource is universally reused in each cell of the system, users with bad channel quality, in particular cell-edge users, can suffer from high interference caused by neighboring cells. Proposing efficient ways to hinder inter-cell interference is paramount ( [2], [3], [4], [5]). In this work, we propose to reduce ICI through efficient Power Control.…”

Section: Introductionmentioning

confidence: 99%

“…• A set of cost functions C = (C 1 (X), C 2 (X), ..., C m (X)) that quantify players' costs for a given strategy profile X where C i = (c i,1,z , c i,2,z , ..., c i,n,z ) is the cost of BS i with c i,k,z the cost of using RB k in zone z as given in (5). As the frequencies alloted to different RBs are orthogonal, minimization of cost c i,k,z on RB k is done independently of other RBs.…”

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confidence: 99%

Game theoretic framework for power control in intercell interference coordination

Khawam

Adouane

Lahoud

et al. 2014

2014 IFIP Networking Conference

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International audienceInter-Cell Interference Coordination (ICIC) is commonly identified as a key radio resource management mechanism to enhance system performance of 4G networks. This paper addresses the problem of ICIC in the downlink of cellular OFDMA systems where the power level selection process of resource blocks (RB) is apprehended as a sub-modular game. The existence of Nash equilibriums (NE) for that type of games shows that stable power allocations can be reached by selfish Base Stations (BS). We put forward a semi distributed algorithm based on best response dynamics to attain the NEs of the modeled game. Based on local knowledge conveyed by the X2 interface in LTE (Long Term Evolution) networks [1], each BS will first select a pool of favorable RBs with low interference. Second, each BS will strive to fix the power level adequately on those selected RBs realizing performances comparable with the Max Power policy that uses full power on selected RBs while achieving substantial power economy. Finally, we compare the obtained results to an optimal global solution to quantify the efficiency loss of the distributed game approach. It turns out that even though the distributed game results are sub-optimal, the low degree of system complexity and the inherent adaptability make the decentralized approach promising especially for dynamic scenarios

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“…Generally speaking, ICIC techniques can be classified into centralized (e.g., [4] [9]) and decentralized (e.g., [2]). In the former, a central entity is needed to collect data about user equipment (UE) from base station, optimize system parameters and allocate available Resource Blocks (RBs) to each base station in order to increase system performance.…”

Section: Introductionmentioning

confidence: 99%

A decentralized inter-cell interference coordination scheme using multi-objective optimization

Hamza

Kassem

Magdy

et al. 2014

2014 IEEE 25th Annual International Symposium on Personal, Indoor, and Mobile Radio Communication (PIMRC)

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In this paper, we propose a dynamic decentralized scheme, namely, the Multi-Objective Harmony Search (MO-HS). The proposed scheme improves on the conventional singleobjective HS scheme by attempting to optimize two objective functions simultaneously. In particular, the MO-HS scheme attempts to minimize the use of the same channels by edge users in neighboring cells, and the average cell interference. Simulation results demonstrate that, with a slight degradation in fairness, the proposed scheme achieves 21% throughput improvements to edge users as compared to the conventional HS without penalizing other users.

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Performance Analysis of Downlink Inter Cell Interference Coordination in the LTE-Advanced System

Cited by 13 publications

References 0 publications

Dynamic Cell Size Adaptation and Intercell Interference Coordination in LTE HetNets

Dynamic Cell Size Adaptation and Intercell Interference Coordination in LTE HetNets

Game theoretic framework for power control in intercell interference coordination

A decentralized inter-cell interference coordination scheme using multi-objective optimization

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