10 Gigabit White Rabbit: sub-nanosecond timing and data distribution
Metadatos
Mostrar el registro completo del ítemAutor
Jiménez López, Miguel; Girela López, Francisco; López Jiménez, José; Marín López, Emilio; Díaz, JavierEditorial
Institute of Electrical and Electronics Engineers (IEEE)
Materia
White rabbit 10 Gigabit Ethernet High accuracy synchronization IEEE 1588 Timing distribution
Fecha
2020Referencia bibliográfica
Jiménez-López, M., Girela-López, F., López-Jiménez, J., Marín-López, E., Rodríguez, R., & Díaz, J. (2020). 10 Gigabit White Rabbit: Sub-Nanosecond Timing and Data Distribution. IEEE Access, 8, 92999-93010. [DOI: 10.1109/ACCESS.2020.2995179]
Patrocinador
European Union (EU) 725490; H2020 ASTERICS 653477; AMIGA7 RTI2018-096228-B-C32Resumen
Time synchronization is a critical feature for many scientific facilities and industrial
infrastructures. The required performance is progressively increasing everyday, for instance, few tens of
nanoseconds for Fifth Generation (5G) networks or sub-nanosecond accuracy on next family of particle
accelerators and astrophysics telescopes. Due to this exigent accuracy, many applications require specific
timing dedicated networks, increasing the system cost and complexity. Under this context, the new IEEE
1588-2019 High Accuracy (HA) default profile is intensively based on White Rabbit (WR) which can
provide sub-nanosecond accurate synchronization for Ethernet networks. However, current WR solutions
have not been designed to work properly with high data bandwidth delivery services even in 1 Gigabit
Ethernet (GbE) links. On this contribution, the authors propose a new architecture design that enables WR
and, consequently, the IEEE 1588-2019 HA profile to be deployed over 10 GbE links solving the already
identified data bandwidth problem. Furthermore, this work addresses different experiments needed to
characterize the system performance in terms of time synchronization and data transfer. As final result, this
contribution presents for the first time in the literature a new WR system which allows high bandwidth data
exchange in 10 GbE networks while providing sub-nanosecond accuracy synchronization. The proposed
solution maintains the time synchronization performance of existing WR 1 GbE devices with significant
advantages in terms of latency and data bandwidth, enabling its deployment in applications that integrate
data and synchronization information in the same network.