The document discusses providing precise synchronization to open compute servers through the OSA 5400 TimeCard, a PCIe card that injects accurate timing. It notes the growing need for synchronization in applications like 5G networks and data centers. The TimeCard supports PTP, NTP, SyncE and GNSS with various oscillator options. It can precisely synchronize a wide range of applications and is a cost-effective way to make open servers time-aware through an easy to integrate module.

1. Inject precise synchronization into open compute
servers
November 2021
Introducing the OSA 5400 TimeCardTM
Picture needs to be changed

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2
Assuring business continuity with precise timing
Detecting and accurately
localizing failures
Accurate timestamping of
video and audio streams
Precisely synchronizing
radio access networks
Fixed/mobile networks
Broadcast
Utilities
Data centers
Synchronizing backup
and distributed
compute processes

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3
Research and Markets: global private 5G
network market of USD 14.28 billion by
2028, CAGR of 39.7% from 2021 to 2028.
Rapidly growing market addressed by new players
Private 5G is transformational
New
players
Market size
Source:
Grandviewresearch

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4
It’s not easy to deliver time from an accurate core clock to edge sites
Timing accuracy with private 5G networks
Enterprise site Cloud
Mobile
network
3...5µs for 5G
central control
1µs to radio base station
160...300ns among radio antennas
1µs for distributed control processes
• Open RAN and
enterprise applications
utilize white box servers
• Synchronization is
required for efficient
resource sharing
• Open compute servers
frequently do not have
access to accurate time
Motivation

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5
How to integrate sophisticated
synchronization into network devices
• Lacking synchronization competence
• Fast innovation cycles of GNSS receivers and
PTP-related standards require frequent
updates for device design and software
• No experience with operating timing
networks in an efficient and transparent way
• Proven, reliable and robust technology
• Modularity eases feature innovation
• Simplified integration and fast time to market
• Sophisticated GNSS receivers, PTP grandmaster,
various backup options for accuracy and
resilience
• Unique GNSS and PTP assurance features
• Transparently managed with Ensemble Sync
Director
Developed by device manufacturer Modular subsystem from ADVA

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Various options for improving timing accuracy
Embedding timing expertise in 3PP network devices
Enterprise site
OSA 5400 SyncModuleTM
OSA 5400 TimeCardTM
New
OSA 5401 SyncPlugTM
OSA 5405 SyncReachTM

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OSA 5400 TimeCardTM for accurately
synchronizing servers
Open compute
server featuring
PCIe card slots
OSA 5400 TimeCardTM
Server
Interface
Timing
appliance
Interface
Interface
Interface
PCIe bus
GNSS
receiver
Oscillator
(OCXO/DOC
XO/Rb )
PCIe
interface
PTP master
PTP probe
PTP slave
PTP BC
NTP server
Server
Server
Storage
Eth (copper)
Eth (fiber )
PPS/CLK
PPS+ToD

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OSA 5400 TimeCardTM
100M/1G copper
+PoE output
GNSS antenna
input
PPS+ToD
CH1/CH2 I/O
(PPS/CLK)
1G fiber
Qz(OCXO)/HQ+(OCXO)/HQ++
(DOCXO)/rubidium options -
extended holdover

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9
• Cost effective, low-power and low-footprint solution
• Easily integrated into any server via standard PCI slots
• Sync capabilities
• IEEE 1588 PTP grandmaster/boundary/slave clock
• Up to 64 unicast clients at 128pps
• Multiple PTP profiles
• PTP profiles conversion
• PTP input (slave) as backup to GNSS (APTS)
• GNSS receiver (GPS/GLONASS/BEIDOU/GLONASS/SBAS/QZSS)
• GNSS assurance
• NTP server (up to 500,000 transactions per second)
• Sync probe (SyncjackTM)
• Sync-E out/in (backup to GNSS)
• Extended holdover based on OCXO/DOCXO/rubidium
OSA 5400 TimeCardTM highlights

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Precisely synchronizing a wide range of applications
PTP
G.8265.1
PTP/NTP
enterprise
PTP
G.8275.2
PTP
G.8275.1
2G/3G/4G/5G
FDD
DOCSIS 3.1
small cells
APTS
MIFID II
automation
5G/LTE TDD
LTE-A
small cells
PTP
broadcast
Professional
broadcast
Power utilities
PTP
power
Managing and operating transport and synchronization networks

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Application: accurate timing
in virtualized mobile networks
Radio
unit (RU)
Core
Distributed
unit (DU)
Central
unit (CU)
O-RAN virtualized architecture requests
moderate timing at CU/core and very
stringent sync accuracy at RU and DU
Time appliance project (TIP/OCP) has
developed PCIe timing card for open
compute servers; OSA 5400 TimeCardTM
exceeds specifications and has additional
NTP, PTP-BC, and sync assurance capabilities
Radio
unit (RU)
PTP/SyncE
Open compute server
OSA 5400
TimeCardTM
plugged into
open server

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Installing GNSS antenna is not simple …
Simpler installation
Integrated solution
Higher accuracy
GNSS antenna
Coaxial cable
PTP grandmaster with GNSS receiver
Good enough ? Optimized solution
OSA 5405-O or 5405-MB
✓ Integrated antenna
✓ Robust & accurate multi-band
receiver
✓ Ruggedized design
✓ PTP/NTP directly from the
smart antenna
PTP/NTP
Extended range

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Simplifying GNSS antenna installation with OSA 5405
COTS (e.g., DU)
PTP Over Copper/Fiber
OSA 5405 Outdoor
NIC
PPS/CLK/ToD
OSA 5400 TimeCard as PTP slave
Recover clock from OSA 5405 and provide it
to NIC via PPS/CLK/ToD
PTP+PoE

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Ensemble Sync Director – GNSS assurance
• GNSS troubleshooting and historical analysis
• Short term: active monitoring, identification of GNSS installation/blocking issues,
detect blind/poor spots for antenna
• Long term: optimize antenna positioning and receiver setting for optimal performance
for time synchronization across transport networks
Benefits

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Ensemble Sync Director – sync and PTP assurance
• In-service sync and PTP monitoring and assurance
• Accurate measurement of PTP clock and physical clock on the OSA 5400 TimeCard
• Raw data is sent to the Ensemble Sync Director for analysis and display
• Time error, MTIE and TDEV calculation and monitoring vs. masks and threshold
Benefits

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Making any network device timing aware with
embedded timing modules and virtual clocks
Security and availability with comprehensive
monitoring and AI-assisted analysis
Backing up network timing with satellite-
delivered timing; fully redundant hardware
Combining multi-band GNSS receivers, class D
boundary clocks and cesium atomic clocks
Sophisticated solution for any timing dimension
Precise timing Resilient timing
Assured timing Ubiquitous timing

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Summary
• Timing accuracy requirements of mobile networks,
critical network infrastructure and data centers
require servers with access to ultra-accurate time
• Device manufactures may not have the required
synchronization competence, and would prefer to
leverage the expertise of a synchronization market
leader
• Injecting the OSA 5400 TimeCardTM provides open
servers with an easy way to access reliable and
accurate time
Making open compute servers time-aware with embedded timing modules

18. Thank you
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