Analysis of Cell Load Coupling for LTE Network Planning and Optimization

TL;DR

This paper presents a mathematical framework for analyzing cell load coupling in LTE networks, considering non-uniform traffic and interference, to improve network planning and optimization.

Contribution

It introduces a novel system model for LTE load coupling, providing necessary and sufficient conditions for feasibility and practical methods for network optimization.

Findings

Established conditions for load-coupling feasibility

Developed numerical methods for performance evaluation

Validated approach with experimental results

Abstract

System-centric modeling and analysis are of key significance in planning and optimizing cellular networks. In this paper, we provide a mathematical analysis of performance modeling for LTE networks. The system model characterizes the coupling relation between the cell load factors, taking into account non-uniform traffic demand and interference between the cells with arbitrary network topology. Solving the model enables a network-wide performance evaluation in resource consumption. We develop and prove both sufficient and necessary conditions for the feasibility of the load-coupling system, and provide results related to computational aspects for numerically approaching the solution. The theoretical findings are accompanied with experimental results to instructively illustrate the application in optimizing LTE network configuration.