A Data-Driven Traffic Steering Algorithm for Optimizing User Experience in Multi-Tier LTE Networks | IEEE Journals & Magazine | IEEE Xplore

A Data-Driven Traffic Steering Algorithm for Optimizing User Experience in Multi-Tier LTE Networks


Abstract:

Multi-tier cellular networks are a cost-effective solution for capacity enhancement in urban scenarios. In these networks, effective mobility strategies are required to a...Show More

Abstract:

Multi-tier cellular networks are a cost-effective solution for capacity enhancement in urban scenarios. In these networks, effective mobility strategies are required to assign users to the most adequate layer. In this paper, a data-driven self-tuning algorithm for traffic steering is proposed to improve the overall Quality of Experience (QoE) in multi-carrier Long Term Evolution (LTE) networks. Traffic steering is achieved by changing Reference Signal Received Quality (RSRQ)-based inter-frequency handover margins. Unlike classical approaches considering cell-aggregated counters to drive the tuning process, the proposed algorithm relies on a novel indicator, derived from connection traces, showing the impact of handovers on user QoE. Method assessment is carried out in a dynamic system-level simulator implementing a real multi-carrier LTE scenario. Results show that the proposed algorithm significantly improves QoE figures obtained with classical load balancing techniques.
Published in: IEEE Transactions on Vehicular Technology ( Volume: 68, Issue: 10, October 2019)
Page(s): 9414 - 9424
Date of Publication: 05 August 2019

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