Potential feedback control for data scheduling in LTE cellular networks

Hamed Samie (1, 2) , Emmanuel Moulay (3, 4) , Patrick Coirault (1, 2) , Rodolphe Vauzelle (3, 4) , Frédéric Launay (1, 2)

1 LIAS [Poitiers] - Laboratoire d'informatique et d'automatique pour les systèmes [EA 6315]
2 A&S - Automatique et Systèmes
3 XLIM-SRI - Systèmes et Réseaux Intelligents
4 UP - Université de Poitiers = University of Poitiers

This article deals with a new Quality of Service (QoS) aware Two-Level Scheduler (TLS) for real-time (RT) data flows in downlink transmission of Long Term Evolution (LTE) cellular networks. It consists of two distinct scheduler levels. At the upper-level scheduler, the Potential Feedback Controller (PFC) determines the quota of data to transmit in order to meet the delay constraints of RT data flows while, at the lower-lever scheduler, the Proportional Fair (PF) scheduler is used to reach a high fairness among Users (UEs). The PFC is well suited for the upper-level scheduler since it maintains the queue length as close as possible to zero which leads to a low Packet Loss Ratio (PLR). A comparison, by using LTE-Sim simulator, with well-known QoS aware scheduling methods Frame Level Scheduler (FLS), Exponential (EXP)-rule and Logarithmic (LOG)-rule has been provided which shows that our proposed TLS outperforms the EXP-rule and LOG-rule scheduling methods and it slightly decreases the PLR of RT data flows compared to the FLS scheduling method while it significantly reduces the computation time.

Domaines: Automatique; Réseaux et télécommunications [cs.NI]

Hamed Samie, Emmanuel Moulay, Patrick Coirault, Rodolphe Vauzelle, Frédéric Launay. Potential feedback control for data scheduling in LTE cellular networks. 8th International Conference on Information, Intelligence, Systems & Applications (IISA), Aug 2017, Larnaca, Cyprus. pp.1-6, ⟨10.1109/IISA.2017.8316362⟩. ⟨hal-01735499⟩