Time as a Service Based on White Rabbit for Finance Applications

López-Jiménez, José; Gutierrez-Rivas, Jose Luis; Marin-Lopez, Emilio; Rodríguez-Álvarez, Manuel; Díaz, Javier

doi:10.1109/mcom.001.1900602

Cited by 17 publications

(14 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…• GNSS based calibration: Once the link has been deployed, on site calibration can be performed using GNSS receivers in each end [44], [46]. The accuracy depends on the instantaneous offset between both receivers, which could be affected by different factors as the antenna position or the internal delays.…”

Section: B Calibrationmentioning

confidence: 99%

“…A main example is the Best Master Clock Algorithm (BMCA), where the devices can switch between different synchronization sources depending on the clock characteristics from different time references. It also provides automatic source switching in case of connection failure [44].…”

Section: Robustnessmentioning

confidence: 99%

“…Initial tests have been performed showing that this accuracy level can be obtained in WR devices when the fiber connection is disrupted as shown in Figure 2. Thanks to the WR stability, WR devices can learn from remote stable references reducing the drift from the source and reducing the local dependencies [44]. Lastly, several devices have included previously commented features as BMCA or holdover with redundant power-supply systems to be protected against power failures making possible to have reliable devices for industrial applications.…”

Section: Robustnessmentioning

confidence: 99%

See 2 more Smart Citations

IEEE 1588 High Accuracy Default Profile: Applications and Challenges

et al. 2020

Self Cite

View full text Add to dashboard Cite

Highly accurate synchronization has become a major requirement because of the rise of distributed applications, regulatory requests and position, navigation and timing backup needs. This fact has led to the development of new technologies which fulfill the new requirements in terms of accuracy and dependability. Nevertheless, some of these novel proposals have lacked determinism, robustness, interoperability, deployability, scalability or management tools preventing them to be extensively used in real industrial scenarios. Different segments require accurate timing information over a large number of nodes. Due to the high availability and low price of global satellite-based time references, many critical distributed facilities depend on them. However, the vulnerability to jamming or spoofing represents a well-known threat and backup systems need to be deployed to mitigate it. The recently approved draft standard IEEE 1588-2019 includes the High Accuracy Default Precision Time Protocol Profile which is intensively based on the White Rabbit protocol. White Rabbit is an extension of current IEEE 1588-2008 network synchronization protocol for sub-nanosecond synchronization. This approach has been validated and intensively used during the last years. This paper revises the pre-standard protocol to expose the challenges that the High Accuracy profile will find after its release and covers existing applications, promising deployments and the technological roadmap, providing hints and an overview of features to be studied. The authors review different issues that have prevented the industrial adoption of White Rabbit in the past and introduce the latest developments that will facilitate the next IEEE 1588 High Accuracy extensive adoption. INDEX TERMS GPS backup, high accuracy profile, IEEE 1588, time dissemination, precision time protocol, PTP, white rabbit.

show abstract

Section: B Calibrationmentioning

confidence: 99%

Section: Robustnessmentioning

confidence: 99%

Section: Robustnessmentioning

confidence: 99%

See 1 more Smart Citation

IEEE 1588 High Accuracy Default Profile: Applications and Challenges

et al. 2020

Self Cite

View full text Add to dashboard Cite

show abstract

“…The possible range of applications of the fiber optic time transfer, apart from those related directly to the time scales generation and time metrology [4], [5], [11], [12], include telecommunications [13], [14], smart grid synchronization [15], astronomy [16], [17], nuclear physics [18] and even the financial sector [19], [20].…”

Section: Introductionmentioning

confidence: 99%

Picoseconds-Accurate Fiber-Optic Time Transfer With Relative Stabilization of Lasers Wavelengths

Śliwczyński

Krehlik

Buczek

et al. 2020

J. Lightwave Technol.

View full text Add to dashboard Cite

In this paper we focus on analyzing the accuracy of time transfer in bidirectional fiber optic links. It has been pointed out that one of the main uncertainty contributions in such links is related to insufficient stabilization of the lasers' wavelengths and to the asymmetry of propagation caused by the fiber's chromatic dispersion. To reduce these contributions, we propose a scheme where the difference (offset) of the wavelengths of forward and backward lasers is stabilized and where optical interleavers are used as diplexers. This allows implementing a λ-swapping technique to assess dispersion-related link asymmetry during the link calibration. For the investigation of these approaches and the measurement of the associated stability we utilize a frequency-synchronized offset laser module (FSOLM) to realize an offset of 25 GHz. In this paper, we show that with the proposed λ-swapping technique the uncertainty associated with the propagation asymmetry due to fiber chromatic dispersion can be reduced to values below 2.5 ps for links up to 1000 km long, making it insignificant compared to other uncertainty contributions. A laboratory proof-of-concept experiment, in which distances up to 540 km were tested, showed good agreement between the measured and the anticipated propagation delay of investigated links.

show abstract

“…Under this context, multiple alternatives such as NTP, IEEE 1588, Huygens algorithm [28], DataCenter Protocol (DTP) [29] or Google TrueTime [30] can be used for some data centers applications. However, most recent data centers infrastructures are demanding deterministic solutions that can provide a synchronization performance below 10 nanoseconds [31]. These new requirements avoid the utilization of previous described solutions due to their non-deterministic nature and accuracy limitations.…”

Section: Introductionmentioning

confidence: 99%

10 Gigabit White Rabbit: Sub-Nanosecond Timing and Data Distribution

et al. 2020

Self Cite

View full text Add to dashboard Cite

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.

show abstract

Time as a Service Based on White Rabbit for Finance Applications

Cited by 17 publications

References 7 publications

IEEE 1588 High Accuracy Default Profile: Applications and Challenges

IEEE 1588 High Accuracy Default Profile: Applications and Challenges

Picoseconds-Accurate Fiber-Optic Time Transfer With Relative Stabilization of Lasers Wavelengths

10 Gigabit White Rabbit: Sub-Nanosecond Timing and Data Distribution

Contact Info

Product

Resources

About