Enhanced Dynamic Inter-Cell Interference Coordination Schemes for LTE-Advanced

Wang, Jing; She, Xiaoming; Chen, Lan

doi:10.1109/vetecs.2012.6240091

Cited by 17 publications

(11 citation statements)

References 3 publications

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“…The proposed dynamic ICIC method can autonomously optimize fractional frequency reuse (FFR) parameters and thus increase throughput. In [12], semi-static ICIC and dynamic ICIC methods are discussed, and the problems facing conventional dynamic ICIC methods are analyzed and investigated. Joint decision and multiple feedback schemes are proposed to enhance the system performance through appropriate selection of normal/mute transmitting status and accurate scheduling for dynamic ICIC.…”

Section: Related Workmentioning

confidence: 99%

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Achieving spectral and energy efficiencies in multi-cell networks

Maaz

Khawam

Tohmé

2015

2015 11th International Conference on Innovations in Information Technology (IIT)

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The focus of this paper is targeted towards multicell networks, when dense frequency reutilization is used in a given operating area by evolved Nodes B (eNodeB). The ensuing Inter-Cell Interference (ICI) harms the radio transmissions and degrades the performances. Thus, a certain degree of ICI coordination (ICIC) between the eNodeBs is required to manage the resources and minimize the interference level. This paper addresses the problem of ICIC in the downlink of LTE OFDMA-based systems, where the power level selection of resource blocks (RBs) is portrayed as a sub-modular game in the context of self-organizing networks. The existence of Nash equilibriums (NEs) for that type of games shows that stable power allocations can be reached by selfish eNodeBs. To attain these NEs, we propose a decentralized algorithm based on Best Response dynamics to achieve those equilibriums. In order to evaluate our proposal, we compare the obtained results to an optimal global CoMP (Coordinated Multi-Point) solution where a central controller is the decision maker [2]. Numerical simulations assessed the good power efficiency of the proposed distributed approach in comparison with the centralized approach for CoMP.

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Section: Related Workmentioning

confidence: 99%

“…Using (11), condition (10a) can be re-written as: (12) Given fixed interference and fixing the power profile of any eNodeB except eNodeB j, it can be seen that (12) and conditions (10b)-(10d) are the KKT conditions of the following optimization sub-problems (13a)…”

Section: B Cooperative Power Controlmentioning

confidence: 99%

Achieving spectral and energy efficiencies in multi-cell networks

Maaz

Khawam

Tohmé

2015

2015 11th International Conference on Innovations in Information Technology (IIT)

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“…More details about eICIC and its functionality can be found in [131][132][133][134][135][136][137]. Other methods to mitigate interference in LTE-Advanced heterogeneous networks are detailed in [138][139][140][141][142][143][144][145][146][147][148]. Another issue in HetNet is that the small cells normally do not carry desirable amount of traffic as they typically have low output power.…”

Section: Technical Aspectsmentioning

confidence: 99%

LTE-Advanced Radio Access Enhancements: A Survey

Dehghani

Arshad

MacKenzie

2014

Wireless Pers Commun

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Long Term Evolution Advanced (LTE-Advanced) is the next step in LTE evolution and allows operators to improve network performance and service capabilities through smooth deployment of new techniques and technologies. LTE-Advanced uses some new features on top of the existing LTE standards to provide better user experience and higher throughputs. Some of the most significant features introduced in LTE-Advanced are carrier aggregation, enhancements in heterogeneous networks, coordinated multipoint transmission and reception, enhanced Multiple Input Multiple Output (MIMO) usage and deployment of relay nodes in the radio network. Mentioned features are mainly aimed to enhance the radio access part of the cellular networks. This survey article presents an overview of the key radio access features and functionalities of the LTE-Advanced radio access network, supported by the simulation results. We also provide a detailed review of the literature together with a very rich list of the references for each of the features. An LTE-Advanced roadmap and the latest updates and trends in LTE markets are also presented.

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“…Until recently, there have been a few works on CA based eICIC [8]- [13]. However, only [8], [9], and [10] are on the macro-pico HetNet, and most of them focus solely on the control channel (CCH) interference [8], [9].…”

Section: Introductionmentioning

confidence: 99%

“…In these works, CCH interference is handled by compelling different types of cells to use orthogonal resources. [11]- [13] are on the femtofemto HetNet. In these works, decentralized autonomous CC assignment based on measurement and sensing is studied.…”

Section: Introductionmentioning

confidence: 99%

Carrier Aggregation Based Interference Coordination for LTE-A Macro-Pico HetNet

Jiang

Wang

Zhu

et al. 2013

2013 IEEE 77th Vehicular Technology Conference (VTC Spring)

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The intensive downlink (DL) inter-cell interference created by cell range expansion (CRE) of picocells is an urgent problem needing to be solved under macro-pico heterogeneous network (HetNet) scenario. A promising approach is taking advantage of additional degree of freedom brought by carrier aggregation (CA). However, poorly arranged carrier configurations or interference coordination schemes can lead to a degradation of system overall performance. In this paper, we propose a novel dynamic interference coordination scheme based on carrier aggregation to alleviate the DL interference from macrocells to users located in the cell range expansion area. Novel carrier configuration pattern and dynamic power control scheme based on price algorithm are applied to mitigate detrimental interference to picocell-edge users and improve the availability of macrocells. Simulation results show that the proposed scheme can boost the picocell-edge throughput significantly while ameliorating the overall system throughput.Index Terms-interference coordination; carrier aggregation (CA); cell range expansion (CRE); heterogeneous network (Het-Net); power control; price algorithm

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Enhanced Dynamic Inter-Cell Interference Coordination Schemes for LTE-Advanced

Cited by 17 publications

References 3 publications

Achieving spectral and energy efficiencies in multi-cell networks

Achieving spectral and energy efficiencies in multi-cell networks

LTE-Advanced Radio Access Enhancements: A Survey

Carrier Aggregation Based Interference Coordination for LTE-A Macro-Pico HetNet

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