Introducing the industry's first ultra-compact outdoor PTP grandmaster clock with multi-band GNSS receiver and integrated antenna. Part of the OSA 5405 Series of smart synchronization devices for indoor or outdoor deployment, our new OSA 5405-MB ensures timing accuracy by eliminating the impact of ionospheric delay variation. This empowers communication service providers (CSPs) and enterprises to deliver the nanosecond precision needed for 5G fronthaul and other emerging time-sensitive applications.

1. OSA 5405-MB – precise edge timing for 5G and smart
cities
April 2021
Combining a multi-band GNSS antenna with a PTP grandmaster and NTP server

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The better is the enemy of the good
Requirements:
Highly precise and resilient
synchronization in an outdoor
application
Mobile base stations
Access to accurate, secure timing
under difficult environmental
conditions
Industrial control, manufacturing
Robust timing, frequently limited
access to roof space for antenna
mounting
Finance, data centers
GNSS antenna
Coaxial cable
PTP grandmaster with GNSS receiver
Good enough ?

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Synchronizing sites and applications
Requirements:
Simpler installation
Integrated solution
Higher accuracy
GNSS antenna
Coaxial cable
PTP grandmaster with GNSS receiver
Good enough ? Optimized solution
OSA 5405-MB
 Integrated antenna
 Robust multi-band receiver
 Ruggedized design
 PTP/NTP directly from the
antenna
PTP/NTP

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Improving accuracy of GNSS receivers
• Communication in L1 and L2 band
• Dual measurements make it possible to compensate for ionospheric delay variations
• Multi-band GNSS receivers achieve time accuracy of better than 10ns (typical)
Multi-band GNSS receiver
Lower
L-band
Upper
L-band
Delay
difference
Ionospheric
disturbance
0
10
20
30
40
50
ns
Ionospheric daily delay variation
0:00 3:00 6:00 9:00 12:00 15:00 18:00 21:00 0:00
Nanosecond time accuracy with multi-band GNSS receivers

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Meeting PRTC-B requirements according to G.8272
TE
[ns]
MAX MTIE
[ns]
MAX TDEV
[ns]
PRTC-A +/-100 100 30
PRTC-B +/-40 40 5
From PRTC-A to PRTC-B requires
more stringent TE and MTIE/TDEV
Improving accuracy
Now there’s an efficient and cost-effective alternative
Multi-band GNSS receiver
with nanosecond-level
timing accuracy
High-performance
oscillators can smooth
ionospheric delay variations

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Simplifying outdoor GNSS installation
OSA 5405 multi-band (outdoor)
Multi-band GNSS
antennas
L1+L2
+
PTP GM
NTP server
1G Ethernet fiber (SFP)
MNG+PTP+NTP+SyncE
1G Ethernet (RJ-45)
PoE+MNG+PTP+NTP+SyncE
Network and status LEDs

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• PRTC-B in mobile networks
• Precise synchronization with power utilities
• Smart multi-band antenna for ePRTC sites
Applications
Key features
• Real PRTC-B GM and NTP server integrated in
the GNSS antenna
• Accuracy within +/-40nsec from UTC
• Multi-band (L1+L2) GNSS receivers
• Comprehensive sync and GNSS assurance
• Reduces installation costs
• Advanced jamming and spoofing detection
• Ensemble Sync Director for ease of operation
OSA 5405-MB smart GNSS antenna
First PRTC-B multi-band smart antenna

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OSA 5405-MB smart GNSS antenna
• Easy upgrade to PRTC-B GM
• Multi-band/multi-constellation GNSS
receiver
• Significantly reduces outdoor GNSS
installation costs
• No need to calibrate for cable delay (PTP
TWTT)
• Extended cable distance using fiber interface
• Advanced jamming and spoofing detection
• Can work with up to four concurrent GNSS
constellation – improves resilience and
increases the number of observed satellites
even in urban canyons
Key advantages
Less cabling – faster installation – simpler operation

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Supporting multiple applications
PTP
G.8265.1
PTP/NTP
enterprise
PTP
G.8275.2
PTP
G.8275.1
2G/3G/4G/
5G FDD BS
DOCSIS 3.1,
small cells
and APTS
MIFID ii
5G/LTE
TDD/LTE-A BS
and small cells
PTP
power
Power utilities
PTP
broadcast
Studio

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Example – macro base station sync with PRTC-B

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Multi-constellation Dual-band
Hardware-supported attack detection
AI/ML-assisted monitoring
e.g., Galileo e.g., GPS
Improving resilience by using
multiple GNSS technologies
Ionospheric disturbance
is compensated for
better accuracy
Frequency 1
Analyzing GNSS data to
predict issues and
counteract proactively
Monitoring GNSS signals from
different sources to identify
attacks at receiver
Frequency 2
Making satellite-timing robust and accurate
GNSS timing can also be backed up further with PTP/SyncE over packet network
PTP

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Ensemble Sync Director – GNSS assurance
GNSS monitoring and fault analysis
Health status of all
GNSS receivers
Identifying blind spots
jamming and spoofing
Smart analysis over
time
Transparent GUI
Optimizes
antenna
positioning
and receiver
setting
Performance
monitoring
Root cause
analysis

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Summary
Making synchronization robust, accurate and easy
First smart antenna with integrated multi-band
receiver
Providing PRTC-B accuracy (40ns from UTC)
Robust GNSS timing combines spoofing and
jamming detection with network-based
backup
Multi-technology synchronization devices
featuring PTP, NTP and SyncE
Environmentally hardened device with several
mounting options for ease of installation

14. Thank you
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