Inter-Cell Interference Coordination for Highly Mobile Users in LTE-Advanced Systems

Khalifa, Shady S.; Hamza, Haitham S.; Elsayed, Khaled A.

doi:10.1109/vtcspring.2013.6692595

Cited by 5 publications

(4 citation statements)

References 17 publications

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“…For the ICIC schemes, the proposed scheme in [6] deals with the ICIC issue based on Harmony Search (HS). According to their procedure, eNBs perform decentralized arbitration to mute RBs by referring to the average interference weight calculated by each eNB.…”

Section: Related Workmentioning

confidence: 99%

Study of Downlink Radio Resource Allocation Scheme with Interference Coordination in LTE — A Network

Chen¹,

Chen²

2017

IJFCC

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Carrier Aggregation (CA) is one of the most important technologies in the LTE-Advanced (LTE-A) system for better transmission efficiency. The basic idea of CA is to adopt more than one component carrier (CC) for user equipment (UE) to increase its bandwidth. However, when UE adopts component carriers from other adjacent base stations, it will cause the interference and may decrease transmission efficiency especially for the cell edge UE. Therefore, solving interference with carrier aggregation is a critical issue toward the effective improvement of system throughput. In this paper, we propose a novel method to deal with not only the interference between pico station and macro base station, but also the interference between base stations. In the proposed scheme, the radio interference, channel condition of UE, and load balance are taken into consideration for proper CC selection so as to improve the cell-edge UE performance. The proposed scheme considers the interaction and correlation between Inter-cell Interference Coordination (ICIC) and enhanced Inter-cell Interference Coordination (eICIC) to arrange the secondary CC for LTE-A UE. The simulation results show that the proposed scheme can increase transmission efficiency especially for the edge UE.

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Section: Related Workmentioning

confidence: 99%

Study of Downlink Radio Resource Allocation Scheme with Interference Coordination in LTE — A Network

Chen¹,

Chen²

2017

IJFCC

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“…Recently, dynamic ICIC schemes have emerged as a more efficient solution than static ones (e.g., Reuse-1 and Reuse-3 [28]). However, radio resource allocation problem in dynamic ICIC schemes is known to be NP-hard [29,30]. Accordingly, several heuristics have been proposed to solve the optimization problem such as: game theory [31][32][33][34], graph coloring [26,35], genetic algorithms [36], fuzzy logic [37], etc.…”

Section: A Survey Of Icic Existing Proposalsmentioning

confidence: 99%

“…Khalifa et al [43] propose a dynamic decentralized ICIC scheme that requires no apriori frequency planning. The proposed scheme minimizes the amount of data needs to be exchanged among eNBs by considering that each eNB sends only its calculated weights, instead of all of channel information of its users, to its neighboring eNBs.…”

Section: A Survey Of Icic Existing Proposalsmentioning

confidence: 99%

Interference Mitigation Through Inter-Cell Interference Coordination Using Virtual PRB Allocation in 4G Networks

Hassen

Afif

Tabbane

2016

Wireless Pers Commun

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This paper proposes a distributed and coordinated resource allocation algorithm in multi-cell MIMO-OFDMA systems. Firstly, each cell classifies mobile users into celledge and cell-center users based on a dynamic threshold aiming to avoid throughput loss. Secondly, each cell independently and dynamically allocates physical resource blocks (PRBs) to its cell-center users using a recursive resource allocation algorithm where the effective SINR metric is investigated. After that, each cell aggregates the unused subcarriers by its cell-center users to construct virtual PRBs. These latter are intended to be allocated to cell-edge users. Here, each cell informs its neighboring cells, via messages exchange, about its unused sub-carriers and their corresponding SINRs. If two or more cells share the same unused sub-carrier, a new collision avoidance algorithm is applied to avoid the inter-cell interference. Then, each cell constructs its virtual PRBs based on radio resource exchange between eNodeBs. After virtual PRB allocation, a power allocation procedure is performed and an adaptive modulation and coding algorithm is executed. Simulation results demonstrate that the proposed scheme permits to enhance the system performance in cell-edge and cell-center region compared to well-known algorithms.

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“…Highly dynamic schemes [3] and [4] adapt their coordination parameters in the range of a few milliseconds, e.g. 1-100 ms.…”

Section: Introductionmentioning

confidence: 99%

Semi-static interference coordination in OFDMA/LTE networks

Parruca

Aizaz

Chantaraskul

et al. 2014

Proceedings of the 17th ACM International Conference on Modeling, Analysis and Simulation of Wireless and Mobile Systems

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To minimize interference in LTE networks, several inter-cell interference coordination (ICIC) techniques have been introduced. Among them, semi-static ICIC offers a balanced trade-off between applicability and system performance. The power allocation per resource block and cell is adapted in the range of seconds according to the load in the system. An open issue in the literature is the question how fast the adaptation should be performed. This leads basically to a trade-off between system performance and feasible computation times of the associated power allocation problems. In this work, we close this open issue by studying the impact that different durations of update times of semi-static ICIC have on the system performance. We conduct our study on realistic scenarios considering also the mobility of mobile terminals. Secondly, we also consider the implementation aspects of a semi-static ICIC. We introduce a very efficient implementation on general purpose graphic processing units, harnessing the parallel computing capability of such devices. We show that the update periods have a significant impact on the performance of cell edge terminals. Additionally, we present a graphic processing unit (GPU) based implementation which speeds up existing implementations up to a factor of 92x.

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Inter-Cell Interference Coordination for Highly Mobile Users in LTE-Advanced Systems

Cited by 5 publications

References 17 publications

Study of Downlink Radio Resource Allocation Scheme with Interference Coordination in LTE — A Network

Study of Downlink Radio Resource Allocation Scheme with Interference Coordination in LTE — A Network

Interference Mitigation Through Inter-Cell Interference Coordination Using Virtual PRB Allocation in 4G Networks

Semi-static interference coordination in OFDMA/LTE networks

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