A model for analysing impact of frequency reuse on inter-cell interference in LTE network

2012 ◽  
Author(s):  
Konstantin E. Samouylov ◽  
Irina A. Gudkova ◽  
Nataliya D. Maslovskaya
Keyword(s):  
Frequency Reuse ◽  
Lte Network ◽  
Inter Cell Interference

scholarly journals Throughput Analysis and Optimization of Multi-layer FFR-aided OFDMA Networks

2017 ◽  
Author(s):  
Jan Garcia-Morales ◽  
Guillem Femenias ◽  
Felip Riera-Palou
Keyword(s):  
Analytical Framework ◽  
Frequency Reuse ◽  
Fractional Frequency Reuse ◽  
Spectrum Utilization ◽  
Average Cell ◽  
Cell Edge ◽  
Mathematical Expressions ◽  
Inter Cell Interference ◽  
Very High ◽  
Ofdma Networks

In OFDMA networks, the use of universal frequency reuse plans improves cell capacity but causes very high levels of inter-cell interference (ICI), particularly affecting users located in the cell-edge regions.In order to mitigate ICI while achieving high spectral efficiencies, fractional frequency reuse (FFR) shows a good tradeoff between cell-edge throughput and overall cell spectral efficiency.Recently, multi-layer FFR-aided OFDMA-based designs, splitting the cell into inner, middle and outer layers have been proposed and studied with the aim of increasing the spectrum utilization and improving the user fairness throughout the cell.This paper presents an analytical framework allowing the performance evaluation and optimization of multi-layer FFR designs in OFDMA-based networks.Tractable mathematical expressions of the average cell throughput as well as the layer spectral efficiency have been derived for both proportional fair (PF) and round robin (RR) scheduling policies.

A Simulation Framework for the Evaluation of Frequency Reuse in LTE-A Systems

2014 ◽  
Vol 3 (2) ◽  
pp. 56-83 ◽  
Author(s):  
Dimitrios Bilios ◽  
Christos Bouras ◽  
Georgios Diles ◽  
Vasileios Kokkinos ◽  
Andreas Papazois ◽  
...  
Keyword(s):  
Mobile Communications ◽  
High Performance ◽  
Interference Mitigation ◽  
High Capacity ◽  
Frequency Reuse ◽  
Fractional Frequency Reuse ◽  
Simulation Framework ◽  
Power Efficient ◽  
Enhance Efficiency ◽  
Inter Cell Interference

Long Term Evolution Advanced (LTE-A) technology is considered as the most possible candidate for next generation mobile communications. LTE-A networks offer high capacity and are specified and designed to accommodate small, high performance, power-efficient end-user devices. Similarly to its predecessor LTE, LTE-A incorporates inter-cell interference mitigation methods in order to mitigate interference and to enhance efficiency in bandwidth usage. These methods include power and frequency allocation schemes that allow neighbouring cells and femtocells in heterogeneous networks to co-ordinately share and reuse available spectral resources, in order to avoid performance degradation for interference suffering cell-edge users. In this paper, the authors study the LTE-A multi-cell systems' performance using a simulation framework, which integrates several frequency reuse techniques and provides a user-friendly graphical presentation of the evaluation results. The optimal Fractional Frequency Reuse (FFR) configuration for the user-defined network instance is also determined, based on overall performance and fairness index metrics. Finally, the authors examine FFR techniques in two-tier femtocell/macrocell environments and evaluate them based on the optimization of different metrics, depending on the network operator's needs.

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