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In a context of users increasingly demanding for the use of technology, organizations are continually challenged to present new strategies to improve their business activities. This forces them to be aligned on frameworks and models that help to adequately relate Information and Communication Technology (ICT) resources to the external and internal activities of the organization. The application of...
Synchronization has become a main concern in communication and control systems during the last years. Although there are several standard mechanisms to accomplish timing requirements, development and improvement of high synchronization technologies is required to obtain better performance and quality of service. In this context, the enhanced version of IEEE 1588v2 synchronization protocol, known as...
The White Rabbit (WR) technology has been introduced as an enhancement and next generation of the Precision Time Protocol (PTP, IEEE 1588), providing a boost in synchronization accuracy from the usual sub-microsecond range commonly found in PTPv2-based applications, down to the much more precise sub-nanosecond range. A number of White Rabbit-capable network nodes have been developed with the goal...
This work examines the feasibility of using Ethernet-based time transfer methods based on White Rabbit technology to discipline all the clock domains of a networked data acquisition system (DAQ). Existing systems provide synchronization capabilities, albeit the performance achieved is often not accurate enough for scientific infrastructures and Smart Grid applications requiring frequency coherent...
White Rabbit (WR) [1] has become a feasible technology to develop advanced synchronization applications as wireless links. As a previous step to implement this application, the standard bandwidth has to be decreased. Due to the linear relation between bandwidth and frequency carrier in the WR architecture, we have modified an operational WR node to operate with a reference frequency of 12.5 MHz. In...
Due to an increase of timing requirements in many actual and future applications, improvements are needed in current synchronization protocols. New scenarios as the Internet of Things or the next generation of 5G Mobile telecommunication networks, where a large number of devices must be interconnected, will stand in need of a better synchronization accuracy and a highly scalable protocol. White Rabbit...
White Rabbit (WR) is a technology born at CERN able to provide sub-nanosecond accuracy for time and frequency transfer using standard PTP and Synchronous Ethernet (SyncE). WR was designed to be the main time provider system for scientific infrastructures such as particle accelerators and colliders. This contribution proposes a change of approach for the WR PTP distribution to become a timing solution...
Nowadays, many industrial synchronization systems rely on the Precise Time Protocol (PTP or IEEE1588) that provides sub-microsecond precision time transfer. However, there are some applications such as next generation of telecommunication systems (LTE-A & 5G) or scientific infrastructures that have stricter timing requirements that must guarantee the timing service regardless of traffic load conditions...
White Rabbit (WR) is an Ethernet-based technology that provides data transfer and synchronization in sensor networks with a sub-nanosecond accuracy and a precision of 20 picoseconds. WR networks are composed of switches and nodes forming a tree hierarchical model where end-nodes are connected to different sensors and actuators whilst WR switches are intermediate elements that are used as time reference...
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