The Cost of QoS in LTE/EPC Mobile Networks Evaluation of Processing Load

William David Diego Maza (1, 2, 3, 4) , Isabelle Hamchaoui (4) , Xavier Lagrange (1, 2, 3)

1 ADOPNET - Advanced technologies for operated networks
2 RSM - Département Réseaux, Sécurité et Multimédia
3 IRISA - Institut de Recherche en Informatique et Systèmes Aléatoires
4 Orange Labs [Lannion]

LTE/EPC is an all-IP mobile system which provides higher data rates and lower latency. Nevertheless guaranteeing the QoS is a real challenge since the LTE/EPC QoS model inherits many characteristics of circuit oriented legacy standards. Contrary to usual QoS models of the fixed internet (IP networks), additional signalling procedures are required in order to establish a dedicated bearer for each desired QoS level. This paper introduces an analytical model to evaluate the impact of such a QoS model in terms of Processing Load. Simulation results are then presented to evaluate the impact of different scenarios of QoS deployment.

Mots clés: LTE/EPC; Signaling Protocols; Markov chain; Wireless mobile system; Processing Load; QoS (Quality of service)

Domaines: Modélisation et simulation; Multimédia [cs.MM]; Réseaux et télécommunications [cs.NI]

William David Diego Maza, Isabelle Hamchaoui, Xavier Lagrange. The Cost of QoS in LTE/EPC Mobile Networks Evaluation of Processing Load. VTC 2015 fall : IEEE 82nd Vehicular Technology Conference, Sep 2015, Boston, United States. pp.1 - 5, ⟨10.1109/VTCFall.2015.7391170⟩. ⟨hal-01292736⟩