Abstracts contain a one or two paragraph summary of your concept. Provide a concise summary of your
presentation’s most important points. What is most important to the audience? What problems does your
contribution solve? How does it advance timing and sync innovation? A paper for any session can be proposed as a
poster or a presentation.
At WSTS presenters may deliver their concepts in either a poster or presentation format. Both have benefits,
depending on your concept and your preferred means of communicating. The WSTS Steering Committee reserves the
right to request presentations in a format other than the one the author has requested if they see it as better
suited. For example, if you request to present in a poster, we may accept your contribution as a presentation
and vice versa.
The poster format is less formal and more interactive than a workshop presentation. Posters provide the
opportunity for attendees to engage in discussion and to have one-on-one interaction with the poster presenter
as well as interested fellow attendees.
Time will be designated during the workshop for attendees to visit the poster area. Poster presenters are
only required to be present at their poster board during the designated poster sessions. Posters will be
available for viewing during the entire three days.
In addition to being displayed for discussion, soft copies (electronic format) will be distributed to
attendees with the workshop presentations.
Presentations will be given to an audience of all workshop attendees. Each WSTS presentation will be
allocated approximately 20 minutes during a designated session, depending on the author preferences and the
scheduling choices by the Steering Committee. Q&A sessions will be scheduled throughout the day, where the
audience can ask questions related to the presentations.
The workshop is a technical conference and presenters are asked to refrain from including any slides or
material that can be considered a marketing or promotional message.
Although time itself is an abstract concept, its commonly understood purpose is event correlation and
activity scheduling. In the business world, time is a critical and necessary element for successful
execution of almost every industrial process. The industry most widely associated with using time is
telecom. However, the financial, IoT, industrial automation, equipment manufacturing, automotive, power,
aviation, maritime, defense, broadcast as well as other industries are equally dependent upon precision time
for critical applications. This session will explore some of these applications and discuss the
ramifications of time errors on these industries so critical to our economic infrastructure.
Synchronization has always been a critical factor in telecom networks. As the deployment date for the 5G
network approaches, the role of sync maintains its importance. The telecom infrastructure has become a
fundamental asset in delivering accurate timing across and between networks. Legacy systems remain and need
traditional timing (frequency) to support them. Wireless applications continue to present important
requirements for both frequency and phase/time alignment to an increasing level of precision. In particular,
3GPP is defining the 5G mobile generation requirements (New Radio “NR”). This new wireless standard is of
interest not only in the backhaul segment, but also in the next generation front haul segment, with the
support of functions such as carrier aggregation. In addition to 3GPP and ITU-T, other standardization
bodies are addressing sync in 5G and specifically in fronthaul (IEEE802.1CM, CPRI).
Papers in this category may address topics including:
- Which telecom applications depend upon time today, and how will their time precision requirements
become more acute?
- What are the techniques and approaches to deliver tight phase/time synchronization?
- How can IEEE 1588 and SyncE/eSyncE be used to deliver very tight sync requirements?
- How can we deal with asymmetries in the network to deliver tight phase/time to the end
- Is legacy synchronization equipment being upgraded to support time/phase, or are new overlay
synchronization networks required to support 4G and 5G requirements?
National critical infrastructures have become increasingly dependent on GNSS for timing and
synchronization for important applications in the areas of telecommunications, public safety, government,
finance, utilities, and other critical sectors. National agencies in various countries have issued a call to
action to both public and private sectors to develop protection mechanisms and alternatives to the increased
dependence on the GNSS system as the sole source of synchronization and timing for critical national
infrastructures. However, all methods of delivering time have vulnerabilities. Although transport of time
employing any one technology will not achieve 100 percent availability, this session will explore solutions
to reduce the increasing vulnerabilities in timing systems for critical national infrastructures, addressing
questions such as:
- What techniques and approaches will help devices/systems with GNSS receivers to provide good time
outputs in the presence of irregularities such as jamming, interference, space weather, system failure and
- What techniques or approaches combat packet network issues that impact the performance of PTP (IEEE
1588), such as packet delay variation, network asymmetries, and various network attacks?
- How can frequency delivery, such as SyncE, contribute to reliable time distribution?
- Finally, how do different technologies work together to provide a better solution than any one of the
Assuring the performance of timing systems against requirements has many aspects. Time, phase, and
frequency all need to be evaluated. In the implementation of networks and timing delivery systems, the
ability to validate performance is vital both to support fast and efficient rollout of new systems as well
as to debug and rectify issues post-deployment. A number of standards define, or are working to define,
performance of both individual network elements as well as network system performance. This session features
discussion of these metrics. The use of these or additional metrics and/or masks to assist implementers to
efficiently and robustly implement equipment, networks, and systems to reliably deliver time are
The sharing of real-world results is an effective method of bringing theory to life by demonstrating what is
actually achievable today — and potentially achievable tomorrow. Papers that include actual performance
results are encouraged. Discussion of how to use the metrics to interpret the results is also invited.
With the need for accurate and reliable time accelerating, industry is continually driven to define new
ways to deliver accurate timing. This is especially true, for instance, in complex deployments where it
would be unfeasible or too expensive to deliver time over PTP. This may be the case, for example, due to
segments in the network where legacy network elements do not support IEEE1588 or where the GNSS signal is
not accessible. Research of new ways to deliver time synchronization is also related to reducing the
dependency from a single synchronization technology.
This session will explore commercially viable timing alternatives and protection solutions to address new
and innovative ways to deliver accurate timing. Among new synchronization techniques, 3GPP has recently
studied ways to improve the accuracy of timing delivered over the radio interface (RIBS - Radio Interface
Based Synchronization). Other options include dedicated synchronization services over satellite systems
(Iridium), possibilities for eLORAN, and terrestrial beacons. Also, new IEEE1588 profiles that may provide
back-up to GNSS operating in networks where full support is not guaranteed have been recently defined by
ITU-T (G.8275.2/G.8272.1). Finally, new options for delivering time from GNSS with increased reliability are
being developed. Presentations on subjects mentioned here, as well as other topics aligned with this theme
IEEE 1588 Precision Time Protocol together with GNSS solutions and Synchronous Ethernet have been broadly
supported and deployed in mobile networks for many years. Standards for LTE and corresponding
synchronization requirements and ITU-T recommendations have evolved and continue to do so. Over time,
- Adopted and implemented the latest technologies and standards
- Found solutions for various synchronization topologies and roles
- Worked in new requirements for their next network release
- Worked out interoperability and multi-vendor challenges
- Built and monitored real synchronization networks
Today many carriers are transitioning to LTE-Advanced or LTE-TDD networks that add the requirement for
tight phase synchronization in addition to the well-characterized frequency requirements. This session
explores real deployment scenarios for both frequency and time synchronization, as well as emerging phase
synchronization for today’s networks and 5G.
This WSTS session takes a broad-range look at the future of timing and sync issues, highlighting topics
including the following:
- The fact that current solutions for precision time and sync delivery are mainly for static applications
and do not translate to solutions for mobile applications
- How autonomous vehicles could be aware of traffic and flow via GPS data and transportation system
- The genesis and prospective benefits of profoundly accurate atomic clocks, such as optical clocks or
- Development of regional solutions to improving timing resiliency
- Backups to GNSS-distributed timing being considered in the U.S. and by other governments
- Backup time distribution links using IEEE1588/PTP with improved PRTSs (Primary Reference Time
- Multi-GNSS ensembling
- More stringent GNSS receiver requirements
- GNSS receiver standards
This session will cover advances in precision time and time distribution in these and other evolving