Simulations of the 5G-TSN bridge delay: towards a joint QoS model

Abstract

To integrate 5G mobile radio into Time-Sensitive Networking (TSN), the 3rd Generation Partnership Project (3GPP) specified the model of a virtual 5G-TSN bridge. This contains TSN translators which map principles such as time synchronization and Quality of Service (QoS) mechanisms from TSN to 5G. However, practical implementations with fine-granular QoS differentiation are not available yet. Therefore, in this paper, we examine the transmission delays of frames of the eight TSN traffic classes by simulating different scenarios while varying the QoS parameters priority, periodicity, and frame length. Our research contribution includes indications for the 5G bridge delay and Packet Delay Budget (PDB) depending on the traffic characteristics in a converged wired and wireless 5G-TSN network. This serves as a basis for the development of TSN translators and finally of a joint QoS model.