osa modernization of the synchronization network perry.pdf · 2018-10-19 · 1212 © 2018 adva...
TRANSCRIPT
OSA Modernization of the Synchronization Network
Chuck Perry
© 2018 ADVA Optical Networking. All rights reserved. Confidential.22 © 2018 ADVA Optical Networking. All rights reserved. Confidential.22
Headquarter
Office
Representative
Atlanta
York
Munich
Meiningen
Shenzhen
Singapore
Gdynia
Neuchâtel
Application and technology expertise close to our customers
ADVA Optical Networking Today
Helsinki
Tel Aviv
Our NUMBERS
>500 million revenue
>1,700 employees1
Our CUSTOMERS
Hundreds of carriers
Thousands of enterprises
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Oscilloquartz at a Glance
Member of the ADVA Optical Networking Group
Focused offerings for communications, government and enterprise sync
applications since 1949
Longstanding relationship with customers worldwide
• Around 100 sync focused partners in about 80 countries around the globe
State-of-the-art time and frequency systems
End-to-end solutions for all markets
Timing delivery and assurance Excellency
Innovation leader for timing distribution and assurance
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Cell site 1st mile 2nd mile Aggregation Core (IP/MPLS)
OSA Product Line Overview -2018
OSA 5420 & OSA 5421OSA 541x
Radio
Base StationUE
UE
Backhaul
OSA 5401
1-64 Clients , PTP
GM/Sync-E
FSP NM End to End Synchronization Network Management
8-64 Clients , PTP
GM/BC/Slave/Probe/1xT
DM/Sync-E
128-1024 Clients , PRC/PRTC/PTP
PTP/NTP
GM/BC/Slave/Probe/32xTDM/PPS/
TOD/CLK/Sync-E
100s to 1000s of Clients , PRC/ePRC /PRTC/ePRTC/PTP
GM/NTP/160xTDM/Sync-E
Core
OSA 33XX Optical Cs PRC/PRTC/ePRTC
OSA 5405-I/O
OSA 5430 & 5440 NG GM/SSU/ePRTC
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SyncJack – Verifying The Sync
Software feature that measures and reports the status/state of the sync network
Embedded in all ADVA Synchronization products
Analogous to Perf Mon and Bit Error Rate in traditional networks
Unique Differentiator From Competition
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Base stations and small cells
Transactional services in finance
Cable networks and emerging
distributed access architectures
Utilities, e.g., substations in power
networks
Precise synchronization for IoT (Internet
of Things) and distributed processes
Increasing number of appliances require ultra-precise timing
Accurate Timing Is Mandatory
Applications requiring more accurate time
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TDM & Where we’ve Been!Time Division Multiplexing
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ANSI Clock Standards
Stratum-1
Stratum-2
Stratum-3E
Stratum-3
1 x 10-11
1.6 x 10-8
4.6 x 10-6
Not Defined
< 255 DS1 slips,
1st 24 hrs.
1 x 10-10 per
day, 1st 24 hrs.
4.6 x 10-6 1 x 10-8 per
day, 1st 24 hrs.
1.6 x 10-8
Not Defined
4.6 x 10-6
4.6 x 10-6
SMC 2.0 x 10-5
Stratum-4 Not Defined3.2 x 10-5 3.2 x 10-5
4.6 x 10-6 2.0 x 10-5
The maximum MTIE during a reference rearrangement for
SONET interfaces is 1 ms or 20 ns in any 14 ms.
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Typical Hierarchical Synchronization Plan
Stratum
2
Stratum
2
Stratum
2
Stratum
2
Stratum
1 Stratum
3
Stratum
3Stratum
3Stratum
3E
Stratum
1
Stratum
3E
Stratum
3E
Stratum
1
Stratum
3E
Stratum
3EStratum
3E
Distributing a highly accurate frequency reference to all
Network Elements in an effort to elevate the internal
Oscillators of the network elements to that of the frequency
source (Stratum 1)
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Frequency Offset is Phase Accumulation over TimeDf = The average rate of phase accumulation (Dt/t)
1 picosec/sec 1x10-12 Free-Running Cesium
10 picosec/sec 1x10-11 Stratum One (Minimum Requirement)
100 picosec/sec 1x10-10
1 nanosec/sec 1x10-9 1 part per billion (1ppb)
10 nanosec /sec 1x10-8
100 nanosec /sec 1x10-7
1 msec /sec 1x10-6 1 part per million (1ppm)
Df = fractional frequency offset
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PRS - Cesium
In 1967 the Cesium atom was recognized as the basis
for the international standard (SI) unit of time
Atomic resonant frequency is exactly 9,192,631,770 Hz
All PRS equipment will be traced back to a Cesium standard.
Telecom Cesium devices have, typically, rT/T of 1 picosecond/second
(or a 1x10-12 frequency offset)
One DayrT = 86,400 picoseconds
One YearrT = 31,536 nanoseconds
12 YearsrT = 378 microseconds
Less than 1/2 ms time error (with respect to UTC) for the life of the tube.
(“Turn it on, and forget about it”)
11
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All GPS satellites contain multiple Stratum 1 Clocks (Cesium and/or Rubidium standards). The Clocks in the satellites keep accurate time to within three nanoseconds. A GPS Primary Reference Receiver will derive the accuracy of the standards and provide a very stable Stratum 1 clock source. The GPS satellites are in half synchronous orbit so they circle the earth twice a day.
PRS - Global Positioning System
12
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GPS Ground Control Segment
•The GPS control segment consists of a system of monitor stations located around the world (Hawaii and Kwajalein in the Pacific Ocean; Diego Garcia in the India Ocean; Ascension Island in the Atlantic Ocean; and Colorado Springs, Colorado) a master ground station at Falcon Air Force Base in Colorado Springs, Colorado; and four large ground antenna stations that broadcast signals to the satellites.
13
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✓ Highly reliable PRS
✓Roof access required for antenna
✓Long-term capitalization factor is high
✓Time-of-day availableGNSS
Town
✓ Self-contained, highly-reliable PRS
✓Antenna not required
✓Long-term capitalization factor is low
✓Time-of-day not availableCESIUM
City
Primary Reference Source Options
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Building Integrated Timing Supply - BITS
DS3
TSG
MUX
ChannelBanks
DCS STPToll
Switch
CC/DS1
ATMSwitch
ISDN
SONETADM
SONETADM
CC EC151 Mbit
MSSPRS
Stratum 1DSLDSLAM
DS1
DS1
DS1
DS1DS1
DS1
CC
CC
CC
CC/DS1
DS3
DS0
DS0
DS0
DS0
DS1OC192
OC192
OC48
OC48
OC3
OC3IP
ATMDS3
15
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16
Inter-Office Timing Distribution - SONET
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SONET SSM Formats
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Existing Deployments for TDM Synchronization
BITS Clocks
GPS PRS
Cs PRS
Free-running self-
contained stratum 1
frequency Source
E1/T1 10Mhz Outputs
GPS Based stratum 1
frequency Source
E1/T1 10Mhz Outputs
Possible NTP / TOD
Redundant Frequency
Distribution shelf with holdover
protection
DS1/E1, CC & 10Mhz
Possibly Integrated GPS
Possible NTP / PTP
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Packet NetworksWhere are we Going?
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Packet Network Synchronization Tools:1) Sync-E2) NTP3) PTP4) PTP to NTP Translation4) Boundary Clocks / Transparent Clocks5) Asymmetry Delay Compensation6) ePRTC
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Synchronous Ethernet
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Synchronous Ethernet
Also referred as Sync-E, is an ITU-T standard for computer networking that facilitates the transference of
frequency reference signals over the Ethernet physical layer. This signal can then be made traceable to an
external clock.
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Synchronous Ethernet
Synchronous Ethernet quality messaging (ESMC) is designed to be fully interoperable with
Synchronization Status Messaging (SSM) used with SONET & SDH. These messages provide
traceability of the synchronization reference.
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Packet Timing Technologies
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NTP Packet Exchange T1 – Time request sent by the client (using Client clock)
T2 – Time request received by the server (using Server clock)
T3 – Time reply sent by the Server (using Server clock)
T4 – Time reply received by the Client (using Client clock)
T2 = T1 + Delay_CS - Offset
T4 = T3 + Delay_SC + Offset
Symmetry:Delay_CS = Delay_SC = Delay
Offset = ((T4-T3)-(T2-T1))/2
Client Server
Offset from
Server
T1
T2
Request
T3
T4
Reply
Delays must be symmetrical and constant – Asymmetry and PDV will
impact Client performance
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NTP Stratum Levels
S1 S1
S2 S2 S2 S2
S3 S3 S3 S3 S3
S4 S4 S4 S4
Stratum 1
Stratum 2
Stratum 3
Stratum 4
▪ Hierarchical layering of clocks based on
number of hops from primary reference
source
▪ Stratum 1 servers are synchronized with a
GPS source
▪ Stratum 2 servers use client/server mode to
synchronize with up to six Stratum 1 servers
and symmetric mode to synchronize with
other servers on the same stratum level
▪ Stratum 4 clocks work in client mode to
synchronize with servers in Stratum 3
NTP Stratum levels are not the same as ANSI/ITU-T Stratum levels!
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NTP Challenges
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Network Packet Delay Variation
1) Queueing Delays
2) Differentiated Services
3) Prioritization Schemes
4) Variable Length Packets
5) Network Congestion
Some Causes of PDV:
Variable Length Packets
Queueing Delays
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Network Asymmetry
Network paths are two-way and the maximum rate of data transfer may be defined in each direction.
It is possible that the packets may travel along different routes, going one direction versus the other.
Or that devices on the path affect the passage of packets differently in one direction over the other.
Network Asymmetry has a direct effect on NTP and PTP Timing services. The performance of NTP and
PTP relies on the network being symmetrical.
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Client
MACPHY
HW
Clock
Timestamp
SW/Stack
NTP - Sources of Inaccuracy• Server time reference inaccuracy
• Server internal PDV and asymmetry
• Network PDV and asymmetry
• Client internal PDV and asymmetry
Server
MAC PHY
HW
Clock
Timestamp
SW/Stack
GNSS
NTP Packets
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Typical Time Accuracy Achieved by NTP
In most cases 100 microseconds to 100 milliseconds is achievable
Highly dependent on NTP server accuracy , network asymmetry ,PDV
and NTP client implementation
Reaching microseconds level with existing NTP
solutions is challenging!
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PTP Basics
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IEEE-1588 PTP OverviewT1 – departure timestamp according to master PTP clock of first message called “sync message”.
T2 – arrival timestamp according to slave PTP clock of sync message.
T3 – departure timestamp according to slave PTP clock of second message called “delay request message”.
T4 – arrival timestamp according to master PTP clock of delay request message.
T2 = T1 + Delay_MS + Offset
T4 = T3 + Delay_SM – Offset
Symmetry:Delay_MS = Delay_SM = Delay
Offset = ((T2-T1)-(T4-T3))/2
Asymmetry:Delay_MS != Delay_SM :
Offset+(Delay_MS-Delay_SM)/2=(T2-T1)-(T4-T3))/2
SlaveMaster
T1
T2
T3
T4
T4
Delay_MS
Delay_SM
Offset from
Master
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IEEE 1588v2 vs 1588v1•IEEE 1588v2 meets accuracy requirements for Telecom applications
• High refresh rates up to 128 messages per second
• Correction field for asymmetric measurements
•Several modes supported
• Broad-cast, Multi-cast and Uni-cast are permitted
•Smaller message length to conserve bandwidth
• 72 octets (44 for 1588v2 payload)
•Multiple Master Clock selection methods
• Manual, Semi-automatic, Fully-automatic
•Transparent Clocks to reduce accumulation of timing errors across network elements in cascaded topologies
•Enhanced security
• Configurable network in combination with Best Master Clock algorithm for GrandMaster
• HASH codes
34
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What is a Boundary clock
PTP
UDP
IP
MAC
PHY
MII
PTP
UDP
IP
MAC
PHY
MII
PTP
UDP
IP
MAC
PHY
MII
PTP
UDP
IP
MAC
PHY
MII
Slave Master
IP Network
Grandmaster Boundary Clock
Boundary Clock
Slave
Grandmaster Boundary Clock Slave
▪ A boundary clock has an
internal oscillator:
▪ The oscillator is slaved to the
upstream Grandmaster
▪ The slaved oscillator is then
used as Grandmaster to
downstream devices
▪ Boundary clocks can be
used to extend the reach of
the timing or offload
capacity from the GM.
A Boundary Clock extends
synchronization across an
intermediate network element
M S
M
MS
S
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Transparent clock
MAC
PHY
MII
MAC
PHY
MII
PTP
UDP
IP
MAC
PHY
MII
PTP
UDP
IP
MAC
PHY
MII
Grandmaster Transparent Clock
Transparent Clock
Slave
Grandmaster Transparent Clock Slave▪ A Transparent Clock has no
internal oscillator
▪ Timestamp on outgoing
message is modified to
include it’s own delay
A Transparent Clock is neither a
master or a slave. It is a switch that
adjusts a PTP timestamp to
compensate for its own delay
IP Network
M S
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Full ON-Path Support
PTP Deployment Terms
Partial or No ON-Path Support
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Precision Time Protocol (PTP) Explained
Grandmaster
(Server)
L2/L3 device
External
Slave (client)
1588 Packet Flow
1588
1588
1588
• Protocol used to synchronize clocks throughout a network.
• The Grandmaster (GM) “reference clock” sends a series of time-stamped messages to slaves
• Slaves receive the messages, and eliminate the round-trip delay by synchronizing to the Grandmaster.
• Frequency/Time-of-Day/Phase is recovered from the accurate time of day reference from the GM.
• Boundary Clocks (BC) can receive PTP as a reference, while providing GM functionality downstream to other clients.
Boundary Clock (BC)
External
Slave (client) Embedded
Slave (client)
1588
1588
1588
(BC)
(BC)
(BC)
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Lucky Packet Concept
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Lucky Packet Concept
What is a Lucky Packet?
Networks will present a percentage of packets that get across the network with minimal
queuing delays. These are referred to as ‘lucky’ packets. Since these lucky packets are never
waiting in queues or have minimal wait times, their transit across the network is relatively
consistent.
PTP Slave Clocks run a selection filter on all 1588 packets to find the lucky packets.
Only lucky packets are used in the clock recovery algorithm. The impacts of PDV are thus
filtered and greatly mitigated.
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Lucky Packet Concept
PTP flow through a network operating at 50% load capacity
T-GM
GNSS
Packet-Based Network
PTP Slave
Switch
50% LoadBoundary Clock
PTP Packets
Switch
50% LoadSwitch
50% LoadSwitch
50% Load
Switch
50% LoadPTP flow rate 32pps
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Lucky Packet Concept
PTP flow through a network operating at 50% load capacity
All packets are lucky when leaving the GM!
32 Lucky Packets
T-GM
GNSS
Packet-Based Network
PTP Slave
Switch
50% LoadBoundary Clock
PTP Packets
Switch
50% LoadSwitch
50% LoadSwitch
50% Load
Switch
50% LoadPTP flow rate 32pps
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Lucky Packet Concept
PTP flow through a network operating at 50% load capacity
50% of Packets impacted by queueing delays at 1st Switch
16 Packets remain lucky
T-GM
GNSS
Packet-Based Network
PTP Slave
Switch
50% LoadBoundary Clock
PTP Packets
Switch
50% LoadSwitch
50% LoadSwitch
50% Load
Switch
50% LoadPTP flow rate 32pps
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Lucky Packet Concept
PTP flow through a network operating at 50% load capacity
50% of Packets impacted by queueing delays at 2nd Switch
8 Packets remain lucky
T-GM
GNSS
Packet-Based Network
PTP Slave
Switch
50% LoadBoundary Clock
PTP Packets
Switch
50% LoadSwitch
50% LoadSwitch
50% Load
Switch
50% LoadPTP flow rate 32pps
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Lucky Packet Concept
PTP flow through a network operating at 50% load capacity
50% of Packets impacted by queueing delays at 3nd Switch
4 Packets remain lucky
T-GM
GNSS
Packet-Based Network
PTP Slave
Switch
50% LoadBoundary Clock
PTP Packets
Switch
50% LoadSwitch
50% LoadSwitch
50% Load
Switch
50% LoadPTP flow rate 32pps
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Lucky Packet Concept
PTP flow through a network operating at 50% load capacity
50% of Packets impacted by queueing delays at 4nd Switch
2 Packets remain lucky
T-GM
GNSS
Packet-Based Network
PTP Slave
Switch
50% LoadBoundary Clock
PTP Packets
Switch
50% LoadSwitch
50% LoadSwitch
50% Load
Switch
50% Load
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Lucky Packet Concept
PTP flow through a network operating at 50% load capacity
50% of Packets impacted by queueing delays at 5th Switch
1 Packets remain lucky
T-GM
GNSS
Packet-Based Network
PTP Slave
Switch
50% LoadBoundary Clock
PTP Packets
Switch
50% LoadSwitch
50% LoadSwitch
50% Load
Switch
50% Load
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Lucky Packet Concept
PTP flow through a network operating at 50% load capacity
What happens at the Boundary Clock?
T-GM
GNSS
Packet-Based Network
PTP Slave
Switch
50% LoadBoundary Clock
PTP Packets
Switch
50% LoadSwitch
50% LoadSwitch
50% Load
Switch
50% Load
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Lucky Packet Concept
PTP flow through a network operating at 50% load capacity
Boundary Clock trains it’s internal oscillator to the recovered
clock and generates 32 brand new Lucky Packets!
T-GM
GNSS
Packet-Based Network
PTP Slave
Switch
50% LoadBoundary Clock
PTP Packets
Switch
50% LoadSwitch
50% LoadSwitch
50% Load
Switch
50% LoadPTP flow rate 32pps
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Why is PTP so much better than NTP?
NTP:
1) NTP packets are at the mercy of PDV. No way to distinguish lucky packets
2) NTP has very slow transaction rate as compared to PTP (range 1 per 16–1024 seconds)
3) No Boundary Clocks or Transparent Clocks supported
PTP:
1) PTP packets can overcome PDV by using the Lucky Packet concept.
2) PTP uses much faster transaction rates as compared to NTP (up to 128 per second)
3) Use of Boundary Clocks and Transparent Clocks (On Path Support)
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NTP across the network is greatly impacted by PDV
Core/Mobile
Backhaul Provider
High PDV/
Asymmetry NTP Client
NTP
Server
GNSS
Can PTP help NTP?
NTP NTP
NTP Packets
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Combine PTP with NTP by using PTP BC/TC to overcome
PDV and asymmetry
NTP Client
GNSS
YES! PTP can help NTP
PTP
To NTP
Core/Mobile
Backhaul Provider
NTP
BCTC
PTP
Grand
Master
PTP
PTP Packets
NTP Packets
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PTP to NTP Translation No standards available but…
PTP deliver information which enable to construct UTC
• TAI + UTC offset + Leap second information
Information related to clock quality • clockClass
• clockAccuracy
• …
NTP Stratum level • Can be Stratum 2 when locked to partial on path support PTP
• Can be Stratum 1 when locked to full on path support PTP
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Not All Boundary Clocks are Created Equally!
Boundary Clock / Transparent Clock Classifications
T-TSC Class Permissible range of Constant Phase/Time Error
Class A +/- 50ns
Class B +/- 20ns
The quality of the internal Oscillator has an
important effect on performance.
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PTP Profiles for Phase and Frequency
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PTP - IEEE 1588 v2 Profiles
A PTP profile is a set of options (required, permitted and prohibited), and the
ranges and default values of configurable attributes
Purpose: Assure interworking and required performance level for a specific
application and transport context
PTP profiles are …
• defined by standards organisations (e.g. ITU-T) and industry trade associations
• reviewed by the relevant IEEE Standards Working Group
First telecom PTP profile: ‘ITU-T PTP Profile for frequency distribution without
timing support from the network’ (G.8265.1)
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G.8265.1 Annex A
G.8265.1 Annex A ITU-T Telecom Profile for Frequency
Permitted Nodes Grandmasters and Slave-Only Clocks
Operation Unicast Only
Addressing IP Addressing – Layer 3 Only
Clock Recovery Masters must support both one-way and two-way. Slaves may support one-
way, two-way or both (Note two-way supports phase)
Domain Configurable 4-23 (No default)
Timescale PTP or Arbitrary
Announce 1 per 16 seconds up to 8 per second (default is 1 per 2 seconds)
Sync & Follow-up 1 per 16 seconds to 128 per second
Peer Delay request/response 1 per 16 seconds to 128 per second
Protection Switching Priority or Quality Messaging or LOS
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G.8275.1 Annex A
8275.1 Annex A – ITU-T Telecom Profile for Phase/Time
Permitted Nodes Grandmasters, Boundary Clocks and Slave Only Clocks
Multicast/Unicast Multicast Only
Addressing Mac addressing – Layer 2 only
Clock Recovery Two-way Only (Phase)
Domain 24 default (configurable 24-43
Timescale PTP Timescale
Announce 8 per second
Sync & Follow-up 16 per second
Delay request/response 16 per second
Protection Switching Alternate-BMCA
© 2018 ADVA Optical Networking. All rights reserved. Confidential.5959 © 2018 ADVA Optical Networking. All rights reserved. Confidential.5959
G.8275.2 Telecom Profile
G.8275.2 ITU-T Telecom Profile for Frequency and Phase
Permitted Nodes Grandmasters, Boundary Clocks and Slave Only Clocks
Operation Unicast Only
Addressing IP Addressing – Layer 3 Only
Clock Recovery Both One-way and Two-way modes are supported (Two-way required for Phase)
Domain Default is 44 – Configurable 44-63
Timescale PTP or Arbitrary
Announce 1 per 16 seconds up to 8 per second (default is 1 per 2 seconds)
Sync & Follow-up 1 per 16 seconds to 128 per second
Peer Delay request/response 1 per 16 seconds to 128 per second
Protection Switching Priority or Quality Messaging or LOS (ABMCA)
PTP Backup with ACDC Standards include requirement that PTP backup with Automatic Asymmetry delay
Compensation to be supported by Grandmasters
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PTP for Power Utilities
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IEEE PTP Profile for Power Systems Applications
IEEE PTP Profile for Power Systems Applications (C37.238-2011)
Permitted Nodes Grandmasters, Boundary Clocks, P2P Transparent Clocks and Slave Only Clocks
Operation Multicast Only
Addressing Mac addressing – Layer 2 only
Clock Recovery Two-way Only (Phase)
Domain 0 default - configurable 0-127
Timescale PTP Timescale
Announce 1 per second
Sync & Follow-up 1 per second
Peer Delay request/response 1 per second
Protection Switching Default BMCA
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IEEE 1588 Power Profile
IEEE C37.238-2011 Standard
Profile for IEEE 1588 Precision Time Protocol in power system
applications
Profile Characteristics:
• LAN (Layer 2 Ethernet mapping)
• Multicast addressing only
• Peer-to-peer delay measurement
• Switches are Transparent Clocks
• Time transfer accuracy and holdover time defined
• IEC 61850 will add C37.238-2011 as a requirement in the future
© 2018 ADVA Optical Networking. All rights reserved. Confidential.6363 © 2018 ADVA Optical Networking. All rights reserved. Confidential.6363
PTP Power Profile Network ModelFor Substation Timing
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GNSS Vulnerabilities
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Some GPS “availability issues”
San Diego, Jan. 2007:
US Navy unintentionally jam
GPS in San Diego harbour
during an exercise
Korea, Dec. 2010:
N. Korea jams GPS in
Seoul. Repeated several
times in following years
Washington, Jan. 2011:
FCC permits Lightsquared to
operate terrestrial
transmission in a band
adjacent to the GPS
(Rescinded, Feb. 2012)
Newark, 2009-2011:
FAA take 18 months to trace a
“personal privacy device”
intermittently jamming the GPS
system at Newark airport
Moss Landing, 2002:
GPS jammed across the harbour
for several months by faulty TV
antenna*
*See http://gpsworld.com/the-hunt-rfi/
Most of the issues are in the USA, where you would expect GPS to
work best!
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GPS “availability issues”
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67
Is GPS Safe Enough?
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Using PTP Backup forProtection against GPS Jamming
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Protection Against Antenna Failure and Jamming
GNSS
Primary
Active
T
Routed Network
All Slaves remain locked to Primary GM.
GNSS still traceable through PTP backup
PTP G8265.1 PRS
PTP
Secondary PTP
Secondary
PTP G8265.1
PTP G8265.1
PTP G8265.1
Ac
tiv
e
PR
S PR
S
Ac
tiv
e
GNSS
Primary
Active
Primary
Grand MasterSecondary
Grand Master
Add PTP backup between servers
© 2018 ADVA Optical Networking. All rights reserved. Confidential.7070 © 2018 ADVA Optical Networking. All rights reserved. Confidential.7070
Protection Against Antenna Failure and Jamming
GNSS
Primary
Active
T
Routed Network
All Slaves remain locked to Primary GM.
GNSS still traceable through PTP backup
PTP G8265.1 PRS
PTP
SecondaryPTP
Secondary
PTP G8265.1
PTP G8265.1
PTP G8265.1
Ac
tiv
e
PR
S PR
S
Ac
tiv
e
GNSS
Primary
Active
Primary
Grand MasterSecondary
Grand Master
GPS
Jammer
© 2018 ADVA Optical Networking. All rights reserved. Confidential.7171 © 2018 ADVA Optical Networking. All rights reserved. Confidential.7171
Protection Against Antenna Failure and Jamming
GNSS
Primary
Active
T
Routed Network
All Slaves remain locked to Primary GM.
GNSS still traceable through PTP backup
PTP G8265.1 PRS
PTP
SecondaryPTP
Secondary
PTP G8265.1
PTP G8265.1
PTP G8265.1
Ac
tiv
e
PR
S PR
S
Ac
tiv
e
GNSS
Primary
Active
Primary
Grand MasterSecondary
Grand Master
GPS
Jammer
© 2018 ADVA Optical Networking. All rights reserved. Confidential.7272 © 2018 ADVA Optical Networking. All rights reserved. Confidential.7272
Protection Against Antenna Failure and Jamming
GNSS
Primary
T
Routed Network
All Slaves remain locked to Primary GM.
GNSS still traceable through PTP backup
PTP G8265.1 PRS
PTP
Secondary
ActivePTP
Secondary
PTP G8265.1
PTP G8265.1
PTP G8265.1
Ac
tiv
e
PR
S PR
S
Ac
tiv
e
GNSS
Primary
Active
Primary
Grand MasterSecondary
Grand Master
Routed Network
All Slaves remain locked to Primary GM.
GNSS still traceable through PTP backup
GPS
Jammer
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Protection Against Antenna Failure and Jamming
GNSS
Primary
T
Routed Network
All Slaves remain locked to Primary GM.
GNSS still traceable through PTP backup
PTP G8265.1 PRS
PTP
Secondary
ActivePTP
Secondary
PTP G8265.1
PTP G8265.1
PTP G8265.1
Ac
tiv
e
PR
S PR
S
Ac
tiv
e
GNSS
Primary
Active
Primary
Grand MasterSecondary
Grand Master
Routed Network
All Slaves remain locked to Primary GM.
GNSS still traceable through PTP backup
GPS
Jammer
© 2018 ADVA Optical Networking. All rights reserved. Confidential.7474 © 2018 ADVA Optical Networking. All rights reserved. Confidential.7474
Protection Against Antenna Failure and Jamming
GNSS
Primary
Active
T
Routed Network
All Slaves remain locked to Primary GM.
GNSS still traceable through PTP backup
PTP G8265.1 PRS
PTP
SecondaryPTP
Secondary
PTP G8265.1
PTP G8265.1
PTP G8265.1
Ac
tiv
e
PR
S PR
S
Ac
tiv
e
GNSS
Primary
Active
Primary
Grand MasterSecondary
Grand Master
GPS
Jammer
© 2018 ADVA Optical Networking. All rights reserved. Confidential.7575 © 2018 ADVA Optical Networking. All rights reserved. Confidential.7575 © 2018 ADVA Optical Networking. All rights reserved. Confidential.75 © 2018 ADVA Optical Networking. All rights reserved. Confidential.75
High Availability Deployments
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R-PHY
HA for RPDs supporting Single GM IP Address
Packet-Based Backhaul Network
First Aggregation Node
Optional
GNSS
PTP
Grandmaster
• 5430 with Dual CSMs in Active/Standby Mode
• 100% HW Redundancy – GNSS, Management, Path & Servers
Slave
PTP
5430 configured with dual Clock Synchronization Modules can operate in
active/standby mode. Upon failure of the active Link or CSM the standby CSM will
become active automatically.
R-PHYSlave
R-PHY Slave
Automatic Switchover for redundancy
ActiveStandby
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R-PHY
HA for RPDs supporting Single GM IP Address
Packet-Based Backhaul Network
First Aggregation Node
Optional
GNSS
PTP
Grandmaster
• 5430 with Dual CSMs in Active/Standby Mode
• 100% HW Redundancy – GNSS, Management & Servers
Slave
PTP
5430 configured with dual Clock Synchronization Modules can operate in
active/standby mode. Upon failure of the active Link or CSM the standby CSM will
become active automatically.
R-PHYSlave
R-PHY Slave
Automatic Switchover for redundancy
ActiveStandby
© 2018 ADVA Optical Networking. All rights reserved. Confidential.7878 © 2018 ADVA Optical Networking. All rights reserved. Confidential.7878
R-PHY Slave supporting
Active/Standby GM IPs
HA for RPDs with Active/Standby GM Support
Optional
GNSS
PTP
Grandmaster IP #2
Packet-Based Backhaul Network
Optional
GNSS
PTP
Grandmaster IP #1
• 1+1 Redundancy “Best Practice”
• N+1 “Supported”
• Network Redundancy “Supported”
Active
GM IP
PTP+Sync-E
OSA 542X’s can set phase to 1024 R-PHY’s
Standby
GM IP
Dual GMs can be local or remote to one another
© 2018 ADVA Optical Networking. All rights reserved. Confidential.7979 © 2018 ADVA Optical Networking. All rights reserved. Confidential.7979
R-PHY Slave supporting
Active/Standby GM IPs
HA for RPDs with Active/Standby GM Support
Optional
GNSS
PTP
Grandmaster IP #2
Packet-Based Backhaul Network
Optional
GNSS
PTP
Grandmaster IP #1
• 1+1 Redundancy “Best Practice”
• N+1 “Supported”
• Network Redundancy “Supported”
Active
GM IP
PTP+Sync-E
OSA 542X’s can set phase to 1024 R-PHY’s
Standby
GM IP
Dual GMs can be local or remote to one another
© 2018 ADVA Optical Networking. All rights reserved. Confidential.8080 © 2018 ADVA Optical Networking. All rights reserved. Confidential.8080
R-PHY Slave supporting Dual
Active PTP Slaves
HA for RPDs with Dual Active GM Support
Optional
GNSS
PTP
Grandmaster IP #2
Packet-Based Backhaul Network
Optional
GNSS
PTP
Grandmaster IP #1
• 1+1 Redundancy “Best Practice”
• Network Redundancy “Supported”
• Servers maybe 5420 or 5430
Active
GM IP
PTP+Sync-E
OSA 542X’s can set phase to 1024 R-PHY’s
Active
GM IP
Dual GMs can be local or remote to one another
© 2018 ADVA Optical Networking. All rights reserved. Confidential.8181 © 2018 ADVA Optical Networking. All rights reserved. Confidential.8181 © 2018 ADVA Optical Networking. All rights reserved. Confidential.81 © 2018 ADVA Optical Networking. All rights reserved. Confidential.81
Using PTP to Increase PTP Slave Capacity
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Increasing PTP Capacity for OSA is achieved by stacking
3070 PTP Slaves
Primary
Grand Master
10221024
1 PTP Slave
Antenna Not Required
Expansion #1
1 PTP Slave
1023
Expansion #2
Antenna Not Required
Servers may be stacked
locally or remotely
© 2018 ADVA Optical Networking. All rights reserved. Confidential.8383 © 2018 ADVA Optical Networking. All rights reserved. Confidential.8383
Increasing PTP Capacity for OSA is achieved by stacking
3070 PTP Slaves
Primary
Grand Master
10221024
1 PTP Slave
Antenna Not Required
Expansion #1
1 PTP Slave
1023
Expansion #2
Antenna Not Required
Servers may be stacked
locally or remotely
Maintains phase
alignment during any
shelf outage
© 2018 ADVA Optical Networking. All rights reserved. Confidential.8484 © 2018 ADVA Optical Networking. All rights reserved. Confidential.8484
Increasing PTP Client Capacity for OSA 5420Without UTC Traceability
T
Routed Network
<2047 PTP Slaves
Primary
Grand Master
10231024
1 PTP SlaveAntenna Not Required
Primary
GM Expansion
Antenna Not Required
2nd Shelf is frequency/phase-aligned
with free-running primary shelf via PTP
Important - Any 2 Clocks within a common clock domain
must to be phase aligned with one another
© 2018 ADVA Optical Networking. All rights reserved. Confidential.8585 © 2018 ADVA Optical Networking. All rights reserved. Confidential.8585 © 2018 ADVA Optical Networking. All rights reserved. Confidential.85 © 2018 ADVA Optical Networking. All rights reserved. Confidential.85
Using PTP to Achieve Cost-Effective UTC Traceability & High Availability Across the Network
© 2018 ADVA Optical Networking. All rights reserved. Confidential.8686 © 2018 ADVA Optical Networking. All rights reserved. Confidential.8686
GNSS
Primary
Active
Using GNSS at the Core for Network UTC Traceability
GNSS
Primary
Active
T
PTP G8275.2 PRS
PTP
Secondary PTP
Secondary
PTP G8275.2
Primary
Grand MasterSecondary
Grand Master
Install GNSS Antennas at key core server sites
Add PTP Backup between GNSS Servers
© 2018 ADVA Optical Networking. All rights reserved. Confidential.8787 © 2018 ADVA Optical Networking. All rights reserved. Confidential.8787
GNSS
Primary
Active
Using GNSS at the Core for Network UTC Traceability
GNSS
Primary
Active
T
PTP G8275.2 PRS
PTP
Secondary PTP
Secondary
PTP G8275.2
Primary
Grand MasterSecondary
Grand Master
Install GNSS Antennas at key core server sites
Add PTP Backup between GNSS Servers
© 2018 ADVA Optical Networking. All rights reserved. Confidential.8888 © 2018 ADVA Optical Networking. All rights reserved. Confidential.8888
GNSS
Primary
Active
Using GNSS at the Core for Network UTC Traceability
GNSS
Primary
Active
T
PTP G8275.2 PRS
PTP
Secondary PTP
Secondary
PTP G8275.2
Primary
Grand MasterSecondary
Grand Master
Primary and Secondary UTC Traceable PTP flows to each access server
eliminates the need for local GNSS antenna systems
Add PTP Backup between GNSS Antenna Sites
For Protection against local jamming
© 2018 ADVA Optical Networking. All rights reserved. Confidential.8989 © 2018 ADVA Optical Networking. All rights reserved. Confidential.8989 © 2018 ADVA Optical Networking. All rights reserved. Confidential.89 © 2018 ADVA Optical Networking. All rights reserved. Confidential.89
Packet NetworksStrict Synchronization Objectives
© 2018 ADVA Optical Networking. All rights reserved. Confidential.9090 © 2018 ADVA Optical Networking. All rights reserved. Confidential.9090
Mobile Backhaul / The ChallengesApplication Radio Interface Backhaul
Frequency Phase Frequency Phase
CDMA 2000 ±50ppb ±3 to 10µs GPS GPS
GSM/WCDMA ±50ppb n/a ±16ppb n/a
LTE (FDD) ±50ppb n/a ±16ppb n/a
LTE (TDD) (large cell) ±50ppb ±5µs ±16ppb ±1.1µs
LTE (TDD) (small cell) ±50ppb ±1.5µs ±16ppb ±1.1µs
LTE-A MBSFN ±50ppb ±1 to 5µs ±16ppb ±1.1µs
LTE-A CoMP* ±50ppb ±500nsec to 5µs ±16ppb 500ns - ±1.1µs
LTE-A eICIC* ±50ppb ±1 to 5µs ±16ppb ±1.1µs
New timing distribution architectures are Now Required!
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Impact of Synchronization Impairments
© 2018 ADVA Optical Networking. All rights reserved. Confidential.9292 © 2018 ADVA Optical Networking. All rights reserved. Confidential.9292
Smart Grid Timing Needs Today!
Application Measurement Accuracy Time Interface Sync Source
TW Fault Locator 300 m (line span) 1 μs PTP, IRIG-B, PPO GPS, 1588 GMC
Phasor Measurements ± 0.1 degree 1 μs PTP, IRIG-B (1344) GPS, 1588 GMC
Lightning Strike Correlation Grid-wide events 1 ms IRIG-B GPS
Protection Relaying events < 1 cycle 1 msPTP, IRIG-B
IEC 61850GPS, IRIG-B, 1588 GMC
Event/Disturbance Recorders < 1 cycle 1 ms PTP, IRIG-B, PPO GPS, 1588 GM
Network, Distribution & Substation
Control Grid-wide events 1 ms PTP, IRIG-B
GPS, Control Centre,
1588 GMC
Quality of Supply Metering Freq, time error 0.5 sec PTP, IRIG-B, PPO GPS, 1588 GMC
Bulk Metering Energy registers 0.5 sec Proprietary, PPO Proprietary
Customer Premises Metering Energy registers 1 sec NTP, Proprietary Proprietary, NTP
SCADA/EMS/PAS Grid-wide status 1 ms NTP, ASCII GPS
Frequency Measurement Frequency 1 ms N/A GPS
Sampled Values Volt/Current 1 μs PTP 1588 GM
Telecommunication SDH/PDH G.812/813PTP G.8265
2.048 Mbps/MHzGPS, 1588 GMC
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93
Phasor Measurement Unit
A phasor measurement unit (PMU) is a device which measures the
electrical waves on an electricity grid.
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94
What is a Synchrophasor?
Synchronized phasors (synchrophasors)
provide a real-time measurement of electrical
quantities from across the power system.
Applications include wide-area control, system
model validation, determining stability
margins, maximizing stable system loading,
islanding detection, system-wide disturbance
recording, and visualization of dynamic system
response.
Super Data
Concentrator
Phasor Data
Concentrator
Phasor Data
Concentrator
PMU PMU PMU PMU PMU PMU
PMUs are located at the substationsNASPI (North American Synchrophasor Initiative)
https://www.naspi.org/sites/default/files/reference_documents/33.pdf?fileID=1326
Data collection rates are
now 30-60 per second
and higher vs every 4-6
seconds previously
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Packet NetworksStrict Synchronization Objectives
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Re-Engineering PTP for Phase1st mile 2nd mile Aggregation Core (IP/MPLS)
GPS PRS
SSU/T
SG
CENTRAL OFFICE
Original PTP Deployments in the core were to
support loose frequency requirements (1ppb)
at the network edge. Due to high hop counts,
these servers cannot meet stringent phase
requirements at the edge.
Ethernet
Ethernet
1588-2008
One-way Clock Recovery
1588-2008
One-way Clock Recovery
1588-2008
One-way Clock Recovery PTP for Frequency
1588-2008
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Move PTP GM Closer to the Network Edge
CORE GM
GNSS
PTP Core
Grandmaster
Packet-Based Backhaul Network
GNSS
T-SC
T-SC
T-SC
First Aggregation Node
GM closer to end application
T-SC
Midscale GM
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GNSS GM at first aggregation site
1588v2 with Full/Partial On Path Support to Cell Sites
Core PTP backup and Asymmetry compensation in case of GNSS failure
T-GM
GNSS
PTP
Grandmaster
Packet-Based Backhaul Network
PTP unaware or partly aware
G.8265.1 /G.8275.2
Remote
Base Station
T-SC
T-SC
T-SC
First Aggregation Node
GNSS Boundary
Clock with
Asymmetry
Compensation
PTP fully aware or partly aware network
G.8275.1/G.8275.2
BC
GNSS
1.2us Asymmetry
Error Measured
against GNSS
Mid Scale GM with Core PTP backup & Automatic Asymmetry Delay Compensation
Reliably achieving sub-
microsecond accuracy will require
a 3-tier approach and asymmetry
delay compensation.
© 2018 ADVA Optical Networking. All rights reserved. Confidential.9999 © 2018 ADVA Optical Networking. All rights reserved. Confidential.9999
GNSS Boundary Clock with Asymmetry Delay Compensation
Telecom/Power Profile Conversion
BITS Clock
GNSSPacket-Based Backhaul Network
PTP unaware or partly aware
G.8265.1 /G.8275.2
Power Utility
Substation
GNSS Boundary Clock
with Asymmetry
Compensation
Telecom/Power
Profile ConversionBC
GNSS1.2us Asymmetry
Error Measured
against GNSS
And Compensated
GNSS PRS with
PTP Functionality
Protecting Substation GPS withAutomatic Asymmetry Delay Compensation
Protection
Relay
PMU
Substation
Switch
61850 LAN
BIT
S
PRS with PTP
Functionality
Power
ProfileTelecom
Profile
Reliably achieving sub-microsecond
accuracy will require a 3-tier approach
and asymmetry delay compensation.
© 2018 ADVA Optical Networking. All rights reserved. Confidential.100100 © 2018 ADVA Optical Networking. All rights reserved. Confidential.100100 © 2018 ADVA Optical Networking. All rights reserved. Confidential.100 © 2018 ADVA Optical Networking. All rights reserved. Confidential.100
Phase Holdover Considerations
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Oscillator Options for Phase Holdover
400nsec 1.1usec 1.5usec 5usec 10usec 16ppb
Quartz 2 hours 4 hours 5 hours 8 hours 14 hours 1 month
Quartz HQ+ 8hours 13hours 15hours 1.2days 1.7days 0.5 year
Quartz HQ++ 15 hours 1.3 days 2 days 4 days 6 days >1.5 year
Rubidium 15 hours 1.3 days 2 days 4 days 6 days >5 year
Note: The above are approximated values assuming constant temperature, no initial phase and frequency error, after OSA 542X was powered for one month and locked to GPS for 24 hours.
© 2018 ADVA Optical Networking. All rights reserved. Confidential.102102 © 2018 ADVA Optical Networking. All rights reserved. Confidential.102102
HQQ Vs Rb – Controlled Room (25-30C)
Enter Holdover
After locked to
GPS for 2 days 2 days HQQ
holdover
below 200
nsec !
Temperature effects are seen
in the Rb TIE
• Tested in the Oven with controlled room profile
• Phase Holdover over 48 hours below 200nsec !
© 2018 ADVA Optical Networking. All rights reserved. Confidential.103103 © 2018 ADVA Optical Networking. All rights reserved. Confidential.103103
HQQ Vs Rb – Temp’ Controlled Room (25-40C) Temperature effects are seen
in the Rb FFO
Temperature effects are NOT seen in the HQQ FFO
© 2018 ADVA Optical Networking. All rights reserved. Confidential.104104 © 2018 ADVA Optical Networking. All rights reserved. Confidential.104104 © 2018 ADVA Optical Networking. All rights reserved. Confidential.104 © 2018 ADVA Optical Networking. All rights reserved. Confidential.104
Primary Reference Clocks (PRC/ePRC)Primary Reference Time Clocks (PRTC/ePRTC)
© 2018 ADVA Optical Networking. All rights reserved. Confidential.106106 © 2018 ADVA Optical Networking. All rights reserved. Confidential.106106
Cesium Clock as Time source
PRC (G.811)Frequency
PRC : Cs or GNSS
NE NE NE
PRTC (G.8272)Frequency + Phase
PRTC : GNSS
NE NE NE
ePRTC (G.8272.1)Frequency + Phase
GNSS
NE NE NE
CsCombiner
SSU Packet Master Clock Packet Master Clock
Sync
Network
Sync
NetworkSync
Network
SSU Packet Slave Clock Packet Slave Clock
Cs as backup
© 2018 ADVA Optical Networking. All rights reserved. Confidential.107107 © 2018 ADVA Optical Networking. All rights reserved. Confidential.107107
GNSS Clocks vs Cesium clock
What ? OSA GNSS Clock OSA Cesium Clock OSA GNSS + Cs Clock
Oscillator replacement Every 15-25 years (OCXO/Rb) Every 10 years
(Tube)
Every 10 years
(Tube)
1.1us phase in Holdover 4 hours to 1.3 days 12.2 days (in free running) 4.2 months
Jamming safe No Yes Yes
Spoofing safe No Yes Yes
Weather condition safe No Yes Yes
Unaffected by urban canyon No Yes Yes
Immune from solar storm No Yes Yes
Low phase noise outputs No Yes Yes
Frequency + Phase + Time Yes No Yes
© 2018 ADVA Optical Networking. All rights reserved. Confidential.108108 © 2018 ADVA Optical Networking. All rights reserved. Confidential.108108
Phase and Frequency Holdover Comparison
Oscillator
PHASE FREQUENCY
400nsec 1.1usec 1.5usec 5usec 10usec 16ppb
Quartz 2 hours 4 hours 5 hours 8 hours 14 hours 1 month
Quartz HQ+ 8 hours 13 hours 15 hours 1.2 days 1.7 days 0.5 year
Quartz HQ++ 15 hours 1.3 days 2 days 4 days 6 days >1.5 year
Rubidium 15 hours 1.3 days 2 days 4 days 6 days >5 years
Cesium 4.6 days 12.7 days 17.3 days 1.9 month 3.8 months ∞
Cesium + GNSS 46.2 days 4.2 months 5.7 months 1.6 years 3.2 years ∞
© 2018 ADVA Optical Networking. All rights reserved. Confidential.109109 © 2018 ADVA Optical Networking. All rights reserved. Confidential.109109 © 2018 ADVA Optical Networking. All rights reserved. Confidential.109 © 2018 ADVA Optical Networking. All rights reserved. Confidential.109
Synchronization Network Modernization
© 2018 ADVA Optical Networking. All rights reserved. Confidential.110110 © 2018 ADVA Optical Networking. All rights reserved. Confidential.110110
Next Generation PRS Features Review
1) PTP Outputs AND Inputs
2) PTP In-service Probing
3) GNSS vs GPS Only
4) ePRTC Capable (Requires Cs)
5) Synchronous Ethernet I/O
6) NTP/PTP HW Timestamping
7) PTP to NTP Translation
8) Automatic Asymmetry Delay
Compensation
© 2018 ADVA Optical Networking. All rights reserved. Confidential.111111 © 2018 ADVA Optical Networking. All rights reserved. Confidential.111111
Next Generation PRS Benefits
1) PTP Outputs AND Inputs
2) PTP In-service Probing
3) GNSS vs GPS Only
4) ePRTC Capable (Requires Cs)
5) Synchronous Ethernet I/O
6) NTP/PTP HW Timestamping
7) PTP to NTP Translation
8) Automatic Asymmetry Delay
Compensation
Enables Boundary Clock
& PTP Backup!
© 2018 ADVA Optical Networking. All rights reserved. Confidential.112112 © 2018 ADVA Optical Networking. All rights reserved. Confidential.112112
Next Generation PRS Benefits
1) PTP Outputs AND Inputs
2) PTP In-service Probing
3) GNSS vs GPS Only
4) ePRTC Capable (Requires Cs)
5) Synchronous Ethernet I/O
6) NTP/PTP HW Timestamping
7) PTP to NTP Translation
8) Automatic Asymmetry Delay
Compensation
Enables Jamming
Protection!
© 2018 ADVA Optical Networking. All rights reserved. Confidential.113113 © 2018 ADVA Optical Networking. All rights reserved. Confidential.113113
Next Generation PRS Benefits
1) PTP Outputs AND Inputs
2) PTP In-service Probing
3) GNSS vs GPS Only
4) ePRTC Capable (Requires Cs)
5) Synchronous Ethernet I/O
6) NTP/PTP HW Timestamping
7) PTP to NTP Translation
8) Automatic Asymmetry Delay
Compensation
Enables Advanced
Spoofing Detection!
© 2018 ADVA Optical Networking. All rights reserved. Confidential.114114 © 2018 ADVA Optical Networking. All rights reserved. Confidential.114114
Next Generation PRS Benefits
1) PTP Outputs AND Inputs
2) PTP In-service Probing
3) GNSS vs GPS Only
4) ePRTC Capable (Requires Cs)
5) Synchronous Ethernet I/O
6) NTP/PTP HW Timestamping
7) PTP to NTP Translation
8) Automatic Asymmetry Delay
Compensation
Enables Sub-30ns
Time Performance!
&
Extreme Holdover
Capabilities
© 2018 ADVA Optical Networking. All rights reserved. Confidential.115115 © 2018 ADVA Optical Networking. All rights reserved. Confidential.115115
Next Generation PRS Benefits
1) PTP Outputs AND Inputs
2) PTP In-service Probing
3) GNSS vs GPS Only
4) ePRTC Capable (Requires Cs)
5) Synchronous Ethernet I/O
6) NTP/PTP HW Timestamping
7) PTP to NTP Translation
8) Automatic Asymmetry Delay
Compensation
Enables very good
Frequency Backup
To GNSS and/or PTP
© 2018 ADVA Optical Networking. All rights reserved. Confidential.116116 © 2018 ADVA Optical Networking. All rights reserved. Confidential.116116
Next Generation PRS Benefits
1) PTP Outputs AND Inputs
2) PTP In-service Probing
3) GNSS vs GPS Only
4) ePRTC Capable (Requires Cs)
5) Synchronous Ethernet I/O
6) NTP/PTP HW Timestamping
7) PTP to NTP Translation
8) Automatic Asymmetry Delay
Compensation
Required for todays
sub-1us Timing
Requirements!
© 2018 ADVA Optical Networking. All rights reserved. Confidential.117117 © 2018 ADVA Optical Networking. All rights reserved. Confidential.117117
Next Generation PRS Benefits
1) PTP Outputs AND Inputs
2) PTP In-service Probing
3) GNSS vs GPS Only
4) ePRTC Capable (Requires Cs)
5) Synchronous Ethernet I/O
6) NTP/PTP HW Timestamping
7) PTP to NTP Translation
8) Automatic Asymmetry Delay
Compensation
Greatly Enhances
Over the network NTP
accuracy
© 2018 ADVA Optical Networking. All rights reserved. Confidential.118118 © 2018 ADVA Optical Networking. All rights reserved. Confidential.118118
Next Generation PRS Benefits
1) PTP Outputs AND Inputs
2) PTP In-service Probing
3) GNSS vs GPS Only
4) ePRTC Capable (Requires Cs)
5) Synchronous Ethernet I/O
6) NTP/PTP HW Timestamping
7) PTP to NTP Translation
8) Automatic Asymmetry Delay
Compensation
Enables 3-Tier
Timing approach
for
Mission Critical phase
applications
Thank you
IMPORTANT NOTICE
The content of this presentation is strictly confidential. ADVA Optical Networking is the exclusive owner or licensee of the content, material, and information in this presentation. Any reproduction, publication or reprint, in whole or in part, is strictly prohibited.
The information in this presentation may not be accurate, complete or up to date, and is provided without warranties or representations of any kind, either express or implied. ADVA Optical Networking shall not be responsible for and disclaims any liability for any loss or damages, including without limitation, direct, indirect, incidental, consequential and special damages, alleged to have been caused by or in connection with using and/or relying on the information contained in this presentation.
Copyright © for the entire content of this presentation: ADVA Optical Networking.
© 2018 ADVA Optical Networking. All rights reserved. Confidential.120120 © 2018 ADVA Optical Networking. All rights reserved. Confidential.120120
Abbreviations3ϕ Three Phase
61850 A standard for the design of an electrical substation (more detail)
AMI Advanced Metering Infrastructure
ADM Add-Drop Multiplexor (SDH/SONET terminal)
AMR Automatic Meter Reading
CES Circuit Emulation Service
CT Current Transformer
DFR Digital Fault Recorder
DNP Distributed Network Protocol
DR Demand Regulation, or
DR Disturbance Recorder
DSM Demand Side Management
EHV Extra High Voltage
EMC Electro-Magnetic Compatibility
EV Electric Vehicle
FERC Federal Energy Regulatory Commission
GMC Grandmaster Clock
GOOSE Global Object Oriented Substation Event
GUI Graphic User Interface
FTM Frequency & Time Deviation Monitor
HV High Voltage
I Current
IP Internet Protocol
IEC International Electrotechnical Commission
IED Intelligent Electronic Device
IEEE Institute of Electrical & Electronic Engineers
IRIG-B Inter-Range Instrumentation Group time-code B
NERC North American Electric Reliability Corporation
NTP Network Time Protocol
OC Ordinary Clock (PTP reference)
PAS Power Application Software
PDH Plesiochronous Digital Hierarchy
PMU Phasor Measurement Unit
PPO Programmable Pulse Output (e.g. 1PPS)
PQ Power Quality
PSN Packet Switched Network
PSRC Power System Relaying Committee
PT Potential Transformer (sometimes called a VT
PTM&C Protection, Telecommunication, Metering/Measurement and Control
PTP Precise Time Protocol
QOS Quality of Supply
RTU Remote Terminal Unit
SCADA Supervisory Control & Data Acquisition
SDH Synchronous Digital Hierarchy
SV’s Sampled Analog Values
TW Travelling Wave
UTC Universal Coordinated Time (world standard)
VT Voltage Transformer (sometimes called a PT)
© 2018 ADVA Optical Networking. All rights reserved. Confidential.121121 © 2018 ADVA Optical Networking. All rights reserved. Confidential.121121 © 2018 ADVA Optical Networking. All rights reserved. Confidential.121 © 2018 ADVA Optical Networking. All rights reserved. Confidential.121
Using PTP Probing for AdvancedSpoofing Detection
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Detecting Clock Drift Between Cesium Standards
•How do you measure the accuracy of a cesium without GPS?
122
Cesium Std #1
Phase
Tim
e
© 2018 ADVA Optical Networking. All rights reserved. Confidential.123123 © 2018 ADVA Optical Networking. All rights reserved. Confidential.123123
Detecting Clock Drift Between Cesium Standards
•How do you measure the accuracy of a cesium without GPS? You must compare it to another Cesium!
123
Cesium Std #2
Phase
Tim
e
Cesium Std #1
Phase
Tim
e
© 2018 ADVA Optical Networking. All rights reserved. Confidential.124124 © 2018 ADVA Optical Networking. All rights reserved. Confidential.124124
Detecting Clock Drift Between Cesium Standards
•What can you do if they do not agree?
124
Cesium Std #2
Phase
Tim
e
Cesium Std #1
Phase
Tim
e
© 2018 ADVA Optical Networking. All rights reserved. Confidential.125125 © 2018 ADVA Optical Networking. All rights reserved. Confidential.125125
Detecting Clock Drift Between Cesium Standards
•You must bring in a 3rd Cesium and use majority voting. The 2 cesiums in agreement are on and the 3rd is off.
125
Cesium Std #2
Phase
Tim
e
Cesium Std #1
Phase
Tim
e
Cesium Std #3
PhaseTim
e
© 2018 ADVA Optical Networking. All rights reserved. Confidential.126126 © 2018 ADVA Optical Networking. All rights reserved. Confidential.126126
Detecting Clock Drift Between Cesium Standards
•You must bring in a 3rd Cesium and use majority voting. The 2 cesiums in agreement are on and the 3rd is off.
126
Cesium Std #2Phase
Tim
e
Cesium Std #1
Phase
Tim
e
Cesium Std #3
PhaseTim
e
Which one is off?
© 2018 ADVA Optical Networking. All rights reserved. Confidential.127127 © 2018 ADVA Optical Networking. All rights reserved. Confidential.127127
Detecting Clock Drift Between Cesium Standards
•You must bring in a 3rd Cesium and use majority voting. The 2 cesiums in agreement are on and the 3rd is off.
127
Cesium Std #2
Phase
Tim
e
Cesium Std #1
Phase
Tim
e
Cesium Std #3
PhaseTim
e
Correct! Cesium #1
is off!
© 2018 ADVA Optical Networking. All rights reserved. Confidential.128128 © 2018 ADVA Optical Networking. All rights reserved. Confidential.128128
Detecting Clock Drift Caused by Spoofing
•Requires comparison of 3 independent sources minimum. Any 3 of the following:
128
1) Cesium
2) GPS
3) GLONASS
4) Galileo
5) BEIDOU
© 2018 ADVA Optical Networking. All rights reserved. Confidential.129129 © 2018 ADVA Optical Networking. All rights reserved. Confidential.129129
PTP Probing for Advanced Spoofing Detection
GALILEOT
PTP G8275.2PTP G8275.2
Routed Network
GLONASSGPS
PTP G8275.2PTP G8275.2
PTP G8275.2
PTP G8275.2
Grand Master #1 Grand Master #2 Grand Master #3
PTP Probe
GM3 T1&T4 Vs GPS
PTP Clock Probe
GM1 T1&T4 Vs GPSPTP Clock Probe
GM2 T1&T4 Vs GNSPTP Clock Probe
GM4 T1&T4 Vs GNSPTP Clock Probe
GM0 T1&T4 Vs GAL
PTP Clock Probe
GM2 T1&T4 Vs GAL
Use PTP Clock Probing and Majority Voting to
detect clock drift between Adjacent GMs
Alternate GNSS constellations can be used (GPS,
GLONASS, GALILEO or BEIDOU)
GALILEO
© 2018 ADVA Optical Networking. All rights reserved. Confidential.130130 © 2018 ADVA Optical Networking. All rights reserved. Confidential.130130
Cell site 1st mile 2nd mile Aggregation Core (IP/MPLS)
OSA Product Line Overview -2018
OSA 5420 & OSA 5421OSA 541x
Radio
Base StationUE
UE
Backhaul
OSA 5401
1-64 Clients , PTP
GM/Sync-E
FSP NM End to End Synchronization Network Management
8-64 Clients , PTP
GM/BC/Slave/Probe/1xT
DM/Sync-E
128-1024 Clients , PRC/PRTC/PTP
PTP/NTP
GM/BC/Slave/Probe/32xTDM/PPS/
TOD/CLK/Sync-E
100s to 1000s of Clients , PRC/ePRC /PRTC/ePRTC/PTP
GM/NTP/160xTDM/Sync-E
Core
OSA 33XX Optical Cs PRC/PRTC/ePRTC
OSA 5405-I/O
OSA 5430 NG GM/SSU/ePRTC
© 2018 ADVA Optical Networking. All rights reserved. Confidential.131131 © 2018 ADVA Optical Networking. All rights reserved. Confidential.131131 © 2018 ADVA Optical Networking. All rights reserved. Confidential.131 © 2018 ADVA Optical Networking. All rights reserved. Confidential.131
Introduction to OSA 5401
© 2018 ADVA Optical Networking. All rights reserved. Confidential.132132 © 2018 ADVA Optical Networking. All rights reserved. Confidential.132132
OSA 5401 SyncPlug
New!Sync-E
Input/Output
PPS output
(MMCX)
LED
(Indications)
Optional
MMCX to
SMA can
ordered
GNSS Input
with Cost
Effective
Antenna Kits
(SMA)
PTP GM/BC
G.8265-1
G.8275-1
G.8275.2
© 2018 ADVA Optical Networking. All rights reserved. Confidential.133133 © 2018 ADVA Optical Networking. All rights reserved. Confidential.133133
Distributed Architecture Using Syncplug
T-GM
GNSS
PTP
Grandmaster
Packet-Based Backhaul Network
GNSS
T-SC
T-SC
Small Cells
OSA 5420 Mini-GM
T-SC
T-SC
T-SC
OSA 5401
Mini-GM
OSA 5401
BC
OSA 5401
GNSS
OSA 5401
1PPS T-SC
© 2018 ADVA Optical Networking. All rights reserved. Confidential.134134 © 2018 ADVA Optical Networking. All rights reserved. Confidential.134134 © 2018 ADVA Optical Networking. All rights reserved. Confidential.134 © 2018 ADVA Optical Networking. All rights reserved. Confidential.134
OSA 5405 Small Cell Solutions
© 2018 ADVA Optical Networking. All rights reserved. Confidential.135135 © 2018 ADVA Optical Networking. All rights reserved. Confidential.135135© 2017 ADVA Optical Networking. All rights reserved. Confidential.1212
What it takes to put a GPS antenna on the roof ?
Roof top antenna installation is very costly – can reach 1K-10K
USD per site
• Get a permit to get into the roof (might need to pay for additional
antenna)
• Pay for the GNSS antenna kit
• Install the LRM-400 cable and lighting protector (very thick cable
and hard to install)
• Pay for the installation cost (technician)
• Limited length – up to 120m without amplifier
© 2018 ADVA Optical Networking. All rights reserved. Confidential.136136 © 2018 ADVA Optical Networking. All rights reserved. Confidential.136136© 2017 ADVA Optical Networking. All rights reserved. Confidential.1313
What is the alternative?
• Integrated GNSS antenna with PTP grand master
• Standards Ethernet/IP connectivity
• Easy and cost effective installation - Indoor or simple outdoor locations
• No need to compensate for cable delay (two way time transfer)
• Fiber can be used for very long distances – better protection against lightening
© 2018 ADVA Optical Networking. All rights reserved. Confidential.137137 © 2018 ADVA Optical Networking. All rights reserved. Confidential.137137© 2017 ADVA Optical Networking. All rights reserved. Confidential.1919
OSA 5405 Indoor – GNSS + PTP GM
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The Solution OSA 5405 – Indoor PRTC/GM• Window/Wall/Ceiling mounting options
• Two Integrated GPS/GLONASS/BEIDOU/SBAS/GALILEO GNSS Dual receivers
• Fix positioning and survey in (single satellite mode)
• A-GPS (Almanac & Ephemeris data through network to assist with GNSS signal)
• External antenna option
• Sync-E input and output
• PTP input (backup)
• Combo I/F Fiber/Copper
• Power – PoE via RJ-45
• PTP Grandmaster and PRTC
• Profiles - G.8265.1 (L3 unicast), G.8275.1 (L2 multicast), Telecom 2008 and default profiles
• PPS/CLK Test Point
• High quality OCXO (Stratum 3E)
• In band management
• Support 802.1Q VLANs & CoS as per 802.1Q
• Logs/syslog/RADIUS/SNMPV2&V3
• CLI/SSH/GUI
• Low touch provisioning - Plug-and-Play features
• Discovery
• Configuration
• Industry leading Out-of-Band Rejection
• High bond tape for glass installation
• Rugged, low profile housing for minimum visibility
• ESD protection
• FSP NM used for alarms and SNMP traps
Reuse of existing IP’sand design from OSA
5401 SFP
© 2018 ADVA Optical Networking. All rights reserved. Confidential.139139 © 2018 ADVA Optical Networking. All rights reserved. Confidential.139139© 2017 ADVA Optical Networking. All rights reserved. Confidential.2020
Small Cell Sync – OSA 5405- Indoor
• Features
• PTP capacity up to 32 Slaves• Cost effective• Integrated PTP GM and GNSS
antenna – no need for externalantenna
• Can be installed on a window• Multi GNSS
(GPS/BEIDOU/GLONASS)• Multiple protection options (Sync-
E/PTP)• Support frequency and phase
telecom profiles
PTP+PoE
ETH
GNSS/PRTC/PTP GM
H1/17
© 2018 ADVA Optical Networking. All rights reserved. Confidential.140140 © 2018 ADVA Optical Networking. All rights reserved. Confidential.140140© 2017 ADVA Optical Networking. All rights reserved. Confidential.1717
GPS Signals Thorough Building Materials
Source - Microsoft Research, Redmond , University of Virginia
© 2018 ADVA Optical Networking. All rights reserved. Confidential.141141 © 2018 ADVA Optical Networking. All rights reserved. Confidential.141141© 2017 ADVA Optical Networking. All rights reserved. Confidential.3434
Simple test using smartphone…
• https://play.google.com/store/apps/details?id=com.androits.gps.te
st.free&hl=en
• Can be used for simple site survey before planning trial/installation
© 2018 ADVA Optical Networking. All rights reserved. Confidential.142142 © 2018 ADVA Optical Networking. All rights reserved. Confidential.142142© 2017 ADVA Optical Networking. All rights reserved. Confidential.2323
The Solution OSA 5405– Outdoor PRTC/GM• OSA 5405 Outdoor
• Outdoor waterproof • External-Wall/Roof mounting options
• Integrated GPS/GLONASS/BEIDOU/SBAS/GALILEO GNSS Dual receivers• Fix positioning and survey in (single satellite mode)
• A-GPS (Almanac & Ephemeris data through network to assist with GNSS signal)• Sync-E/PTP input (backup) • Combo I/F Fiber/Copper• Power – PoE via RJ-45• PTP Grandmaster and PRTC
• Profiles - G.8265.1 (L3 unicast), G.8275.1 (L2 multicast), Telecom 2008 and default profiles
• Accuracy - G.8272 : +/-100nsec form UTC• PPS/CLK Test Point• High quality OCXO (Stratum 3E)• In band management• Support 802.1Q VLANs & CoS as per 802.1Q• Logs/syslog/RADIUS/TACACS+/SNMPV2&V3• CLI/SSH/GUI
• Low touch provisioning - Plug-and-Play features• Discovery
• Configuration• Industry leading Out-of-Band Rejection• Rugged, low profile housing for minimum visibility• ESD protection• FSP NM used for alarms and SNMP traps
RJ- 45
PTP+PoEFiber
PTP
Reuse of existing IP’sand design from OSA
5401 SFP
© 2018 ADVA Optical Networking. All rights reserved. Confidential.143143 © 2018 ADVA Optical Networking. All rights reserved. Confidential.143143
Occurrence of Multipath signals in the urban canyon environment
Invisible (NLOS)
GNSS satellite
Direct waveDiffractive
wave
Reflective wave
Direct waveMultipath signals
not accompanying
direct wave
Multipath signals
accompanying
direct wave
GNSS Antenna
Signal propagation
delay due to path
difference from
direct wave
※ Signal propagation delay occurs
at multipath against direct wave.
Multipath signals created by objects surrounded by GPS Antenna and it can be determined as two
scenarios. One is multipath signals accompanying direct wave if the GNSS is visible (LOS), the other one
is multipath signals not accompanying direct wave when GNSS is invisible(NLOS).
Multipath
signals
Visible (LOS)
GNSS satellite LOS
GNSS satellite
NLOS
GNSS satellite
Diffractive wave
Reflective wave
© 2018 ADVA Optical Networking. All rights reserved. Confidential.144144 © 2018 ADVA Optical Networking. All rights reserved. Confidential.144144© 2017 ADVA Optical Networking. All rights reserved. Confidential.2424
OSA 5405-O Mounting Options
• Can be installed on a wall and on pole
© 2018 ADVA Optical Networking. All rights reserved. Confidential.145145 © 2018 ADVA Optical Networking. All rights reserved. Confidential.145145© 2017 ADVA Optical Networking. All rights reserved. Confidential.2525
• TD-LTE, phase/time synch required
• No more than 32 small cells per building
• Small cells are covering lobby areas, foodcourts often in lower floors that is thereason for the long distance to the GPSantenna
• switches with RJ45 & SFP ports providingthe power and connectivity to the smallcells.
• Switch has GM/BC options
• RF cabling from the GPS antenna to theEstimated max distance from the switch tothe antenna 100m - 250m
• Length over 150m is problmtic
• Installtion of RF cable is very expansive
<Change information classification in footer>
Synchronization solution – Indoor Small CellsGPS antenna connected to switch using RF cable
GPS
RF cable length
PoE++ SwitchSmall cells
SwitchSmall Cells
© 2018 ADVA Optical Networking. All rights reserved. Confidential.146146 © 2018 ADVA Optical Networking. All rights reserved. Confidential.146146© 2017 ADVA Optical Networking. All rights reserved. Confidential.2626
<Change information classification in footer>
Synchronization solution – Indoor Small Cells
Alternative solution from ADVA/OSA• 5405-O Integrated GNSS-GM external
mount
• <100m
• CAT5E GE to switch• (POE from switch)
• >100m
• SFP (e.g. multimode fibre)• POE from local injector
• Other mounting options (lowerexternal wall)
• Internal window mount (5405-I)
• Several units can provide redundancy
5405-O
GM
SwitchSmall Cells
PoE + PTP
© 2018 ADVA Optical Networking. All rights reserved. Confidential.147147 © 2018 ADVA Optical Networking. All rights reserved. Confidential.147147© 2017 ADVA Optical Networking. All rights reserved. Confidential.2727
<Change information classification in footer>
Synchronization solution – Indoor Small Cells
Alternative solution from ADVA/OSA
• 5405-I Integrated GNSS-GM indoor
mount
• <100m
• CAT5E GE to switch• (POE from switch)
• >100m
• SFP (e.g. multimode fibre)
• POE from local injector
• Mounted on the window (internally)
• Several units can provide redundancy
5405-I
GM
SwitchSmall Cells
PoE + PTP
© 2018 ADVA Optical Networking. All rights reserved. Confidential.148148 © 2018 ADVA Optical Networking. All rights reserved. Confidential.148148© 2017 ADVA Optical Networking. All rights reserved. Confidential.2828
OSA 5335/OSA 5548C-SSU/TSG
TL1
FSP NM andFSP Sync Manager
GE114S/SH, EG-X, GE206v, …OSA 5410/OSA 5411/OSA 542x/5331
SNMP SNMP SNMP
Generic support by FSP NM
SyncView Plus
PRO EM
Element Management
Layer
HTTP WebUI
Network Managementand Sync Management
Layer
OSA 540 x
CLI (SSH/Telnet)
© 2018 ADVA Optical Networking. All rights reserved. Confidential.149149 © 2018 ADVA Optical Networking. All rights reserved. Confidential.149149© 2017 ADVA Optical Networking. All rights reserved. Confidential.2929
OSA 540X Vs. Microsemi IGMMiniature Scale GM and BC Comparison
• IGM-1100 I & X– Indoor PTP GM and GNSS
• IGM-1100 O – Outdoor PTP GM and GNSS• OSA 5401 – GNSS /PTP Grandmaster/BC/Slave Clock in SFP
• OSA 5405-I - Indoor PTP GM and GNSS• OSA 5405-O - Outdoor PTP GM and GNSS
© 2018 ADVA Optical Networking. All rights reserved. Confidential.150150 © 2018 ADVA Optical Networking. All rights reserved. Confidential.150150
OSA 5405 Fiber Antenna Application
POE injector (Power Over Ethernet)
PT
P O
ver F
iber
OSA 542X
PRS – Primary Reference Source
BITS Clock – OSA 5548C Timing Signal Generator
• Extends the range between GPS antennas and equipment to over 20 miles• Fiber links are immune to RF interference problems associated with coax• Ideal for Data Centers, Central Office and military installations• Provides a fiber security break and insulates from lightning strikes
NTP
PTP
SYNC-E
DS1
CC
OSA5405-O
1063904620-01
© 2018 ADVA Optical Networking. All rights reserved. Confidential.151151 © 2018 ADVA Optical Networking. All rights reserved. Confidential.151151 © 2018 ADVA Optical Networking. All rights reserved. Confidential.151 © 2018 ADVA Optical Networking. All rights reserved. Confidential.151
Introduction to OSA 541X
© 2018 ADVA Optical Networking. All rights reserved. Confidential.152152 © 2018 ADVA Optical Networking. All rights reserved. Confidential.152152
OSA 541X is “all in one”, Cost Effective Sync Toolbox
can be used for the following:
Sync Delivery using 1588v2 Telecom Slave/ Boundary /Master Clocks
/GPS /GNSS /Sync-E /BITS
Sync Assurance using Active/Passive probing and monitoring of Sync
(Sync SLA, network PDV)
First level testing
Mini-GM Sync ProbeBC Slave
© 2018 ADVA Optical Networking. All rights reserved. Confidential.153153 © 2018 ADVA Optical Networking. All rights reserved. Confidential.153153
Main Features Sync Delivery Tools:
1588v2 Ordinary Slave Clock
1588v2 Boundary Clock
1588v2 Grand Master Clock
GNSS/GPS , Sync-E and BITS
Sync Assurance Tools:
Clock Accuracy (2 x Clock Probes – TE/TIE/MTIE of physical clocks)
Clock Analysis (4 x PTP Clock Probes – packet TE/TIE/MTIE)
PTP Network Analysis (PTP network Probe – PDV statistics, loss…)
© 2018 ADVA Optical Networking. All rights reserved. Confidential.154154 © 2018 ADVA Optical Networking. All rights reserved. Confidential.154154
OSA 5410 Front Panel Interfaces
Management
LAN
RS-232
Serial Port
BITS
OUT
BITS
IN
1PPS & ToD
Over RJ-45
GPS
Antenna
CLK-IN
1PPS-IN
CLK-IN/OUT
PPS-IN/OUT
2 x 10/100/1000
Copper
2 x 10/100/1000
Fiber
USB
3G Modem
© 2018 ADVA Optical Networking. All rights reserved. Confidential.155155 © 2018 ADVA Optical Networking. All rights reserved. Confidential.155155
OSA 5411Hot swappable Dual AC and/or DC PSU
Three oscillator options:
• Quartz
• Rubidium
• High Quality Quartz (HQ++)
Same Software features set as OSA 5410
© 2018 ADVA Optical Networking. All rights reserved. Confidential.156156 © 2018 ADVA Optical Networking. All rights reserved. Confidential.156156
OSA 541X –Slave Clock
High Performance Slave Clock
Mini-GM Sync ProbeBC Slave
© 2018 ADVA Optical Networking. All rights reserved. Confidential.157157 © 2018 ADVA Optical Networking. All rights reserved. Confidential.157157
SyncJack – Verifying The Sync
Software feature that measures and reports the status/state of the sync network
Embedded in all ADVA Synchronization products
Analogous to Perf Mon and Bit Error Rate in traditional networks
Unique Differentiator From Competition
© 2018 ADVA Optical Networking. All rights reserved. Confidential.158158 © 2018 ADVA Optical Networking. All rights reserved. Confidential.158158
OSA 541X Highlights Cost effective Sync solution for existing and NG networks
• Synchronous Ethernet -G.8262 and G.8264 compliant
• Access and network port
BITS In & Out
Clock (10MHz) and 1PPS IN/OUT interfaces and ToD over RJ-45
Embedded GNSS receiver
• GPS/GLONASS/GPS+GLONASS
• Galileo and Beidou (h/w ready)
PRC/PRTC (PRC-G.811, PRTC –G.8272)
Quartz , HQ++ Quartz/Rubidium (5411)
IEEE 1588v2
• Grandmaster clock (Mini GM) – 8 to 64 remote unicast clients
• Boundary clock – 8 to 64 remote unicast clients
• Slave clock – Outstanding performance in challenging networks
• PTP Telecom Profile for Frequency Synchronization – ITU-T G.8265.1
• PTP Telecom Profile for Time/Phase Synchronization – ITU-T G.8275.1
• PTP Enterprise profile Mix IP Multicast/Unicast
• IEEE 1588 2008 Over L2 multicast (Annex F)
Syncjack Technology
• Clock Accuracy – 2 x Clock Probes
• Clock Analysis - 4 x PTP Clock Probe
• PTP Network Analysis 1xPTP Network Probe
• Two Ethernet combo interfaces
• For PTP traffic
• Industrial Temperature (-40 C to +65 C)
• NEBS compliant
• AC/48DC/24DC power options
• Integrated or Dual hot swappable PSU
• Small foot-print two boxes side by side in one rack unit
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Introduction to OSA 5420
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• Cost effective IEEE 1588 grandmaster for up to 1024 RPD
• G.8275.2 and G.8275.1 PTP Profiles
• Hardware timestamping for +/-100nsec phase accuracy from UTC
• Optional GPS/GNSS
• Support for PTP and management over IPv6
• Multiple Fiber/Copper SFP 100M/1G
OSA 542x Synchronizes Cable Networks
Perfectly Sized for DAA
Successful interop test with several CCAP Cores & RPDs at Excentis & CableLabs
OSA 5420 Series – Multi-Technology
PTP Grandmaster, NTP Server, GNSS
Receiver
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Cost-effective PTP GM clock, up to 1024 clients
4 Physical Ports per 1 RU, modular expansion to 12 physical ports
Multiple choices of oscillator holdover options, price vs performance Industry-
leading temperature operating environments
OSA 542X Advantage “Swiss Knife”
PTP
GM/BC/SlaveNTP
Server SSU
Multiple I/F
fan-outSyncprobe
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OSA 542X Front Panel Interfaces Management
LAN
RS-232
Serial Port
BITS
OUT
BITS
IN
1PPS & ToD
Over RJ-45
GPS
Antenna
CLK-IN
1PPS-IN
CLK-IN/OUT
PPS-IN/OUT
2 x 10/100/1000
Copper
4x 10/100/1000
Fiber
USB
ModemRedundant
Hot-swappable
PSU (AC/DC)
Expansion Slots
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OSA 542X GNSS for Enhanced Services
GNSS Option
• Standard feature on all OSA 542X
• Only Requires adding Antenna System
• Enables enhanced services
• Supports T1/E1 Circuit Emulation & Business Services Over DOCSIS
• Supports Stratum 1 PRS and BITS Requirements for TDM
• Enables UTC Traceable TOD Distribution via PTP
• Enables NTP Server Option
• HW Time-Stamping
• High Capacity Supports 8000 RPS
• Allows Offering Timing As A Service – TAAS
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Oscillator Recommended Choices for R-PHY
• “Standard” OCXO
• Better than Stratum 3E/G.812 Type III
• Aging/Day: +- 5e-10
• Temp Stability: +- 50e-10
• Phase Holdover: 1 month @ 16ppb
• “HQ+” High Quality OCXO
• Better than G.812 Type I
• Aging/Day: +- 1e-10
• Temp Stability: +- 2e-10
• Phase Holdover: 0.5 years @ 16ppb
Quartz
Both options meet R-PHY specifications
HQ+
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OSA 5420 Expansion Cards
16 x BITS E1/T1
16 x BITS outputs using RJ-48/BNC patch panel ; T1 balance (100Ω), E1 balanced (120Ω), E1 unbalanced (75Ω), 2.048MHz
E1/2.048MHz Configured in group of 8
16 x 1PPS unbalanced (50Ω) or 16 x CLK (10Mhz,50Ω)
16 x 1PPS unbalanced (50Ω), 16 x CLK (10Mhz,50Ω
16 x 1PPS + ToD
16 x 1PPS + ToD over RJ-45
4 x 1G Fiber Ethernet ports
Support Sync-E /PTP/NTP
Support copper SFP
16xBITS
16xCLK/PPS
16xToD+PPS
4x1G Ethernet
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OSA 542X SSU with up to 32 x E1/T1 outputs
OSA 5420 with 32 BITS DistributionGNSS
PTP/BITS/10M/BITS/Sync-E
Backup
OSA 5420 Quartz HQ+
32XBITS
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OSA 542X’s can be combine to create a fully redundant SSU
OSA 542X Protected SSU up to 64 BITSGNSS GNSS
Customer
NE
OSA 5421 Quartz HQ++/Rb OSA 5420 Quartz HQ+
E1/T1/2M E1/T1/2M
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PTP/NTP/Sync-E Fan-out
• Can support to 12 PTP/NTP/Sync-E Ethernet ports
• Hardware timestamping
• Fiber/Copper/Copper SFP 100M/1G
12 x PTP/NTP/Sync-E
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• IEEE 1588-2000 (PTP v2) GM/BC/Slave• Sync probing and assurance using SyncjackTM technology • Sync-E/PTP/NTP on all ports • Max 1024 clients @ max 128 pps • Configurable profile:
─ ITU-T G.8265.1, and 8275.1/2 profiles
─ Default profile over L2 and L3
─ Telecom profile – 2008
─ Enterprise profile (Hybrid profile)
• PRTC support with GPS/GLONASS/Beidou /Galileo• Hot Swappable AC or DC Power Supplies• Hardware-based time stamps, packet processing• Up to 12x1G ports with SFP – (Optical or Electrical)• Up to 32xBITS E1/T1 ports • Rubidium , DOCXO+ (HQ++) DOCXO (HQ+) and OCXO (Qz) oscillators• Telecom grade management - GUI , SNMP and CLI management
OSA 5420 Key Features
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Introduction to OSA 5430
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OSA 5430 – Synchronization “Big Swiss Knife“
PTP
GM/BC/Slave
NTP
Server SSUMultiple I/F
fan-out Syncprobe
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Supporting Multiple Applications
G.8265.1 Enterprise G.8275.2 G.8275.1
2G/3G/LTE
FDD BSDOCSIS 3.1 MIFID iiLTE TDD/LTE-A BS
NTP
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R-PHY
DOCSIS Phase Delivery Using PTP
GNSS
PTP
Grandmaster IP #2
Packet-Based Backhaul Network
First Aggregation Node
GNSS
PTP
Grandmaster IP #1
• Phase Delivery (R-PHY and CMTS) - +/-100usec
• IP (V4/V6) Unicast – End to End – G.8275.2 profile
Slave
PTP
PTP+Sync-E
PTP+Sync-E
R-PHYSlave
R-PHY Slave
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OSA 5430 Front Panel Interfaces
Management
LAN
RS-232
Serial Port
CLK 1 I/O
BITS I/O
1PPS & ToD I/O
Over RJ-45
GNSS
Antenna PPS I/O
4x 1G/10G
Fiber
Redundant
Dual feed
Hot-swappable
PSU (DC)Expansion Slot
Status
LED’s
CLK 2 I/O
AUXCSM A CSM B
RS-232
Serial Port
GNSS
Antenna
4x 1G/10G
Fiber
Status
LED’s
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PSU AUX
SYNC PTP Gear
GNSS
SYNC PTP Gear
GNSS
Eth
po
rts
+Syn
c-E (
e.g
. to
ALU
77X
X)
CSM_1 CSM_2
CPU CPU
PSUs
DCNTraffic (PTP/NTP) + Sync-E
Internal control
DCN (OOB)
Can also be in band
via traffic ports of each CSM
Eth
po
rts
+Syn
c-E (
e.g
. to
ALU
77X
X)
5430 Dual Server Block Diagram
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OSA 5430 Oscillator Options
Each of the CSM include one of the following oscillator options
“Quartz” OCXO– better than Stratum 3E/G.812 Type III
“Quartz HQ+“ High quality DOCXO- better than G.812 Type I
“Quartz HQ++“ High quality DOCXO - better than Stratum 2/G.812 Type I/II
“Rubidium” better than Stratum 2/G.812 Type I/II
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• IEEE 1588-2000 (PTP v2) GM/BC/Slave• Sync probing and assurance using SyncjackTM technology • Sync-E/PTP/NTP on all ports • Max 2048 clients @ max 128 pps • Configurable profile:
─ ITU-T G.8265.1, and 8275.1/2 profiles─ Default profile over L2 and L3─ Telecom profile – 2008─ Enterprise profile (Hybrid profile)
• PRTC support with GPS/GLONASS/Beidou /Galileo• Built-in hardware redundancy - GNSS, Management, Traffic Ports, Clock, Power • Hardware-based time stamps, packet processing• Up to 8x10G ports with SFP+• Up to 12x1G ports with SFP – (Optical or Electrical)• Up to 16xBITS E1/T1 ports • Rubidium , DOCXO+ (HQ++) DOCXO (HQ+) and OCXO (Qz) oscillators• Modular and redundant design, low MTTR• Telecom grade management - GUI , SNMP and CLI management
OSA 5430 Key Features
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• 16 x BITS E1/T1
• 16 x BITS outputs using RJ-48/BNC patch panel ; T1 balance (100Ω), E1 balanced (120Ω), E1 unbalanced (75Ω), 2.048MHz
• Each line configured independently
• 4 x 1G Fiber Ethernet ports
• Support Sync-E/PTP/NTP
• Support copper SFP on roadmap
OSA 5430
16xBITS
4x1G Ethernet
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Same patch panels as OSA 542X
• Patch panels are connected to the OSA 5420/30 line cards using HD cable
• Each unit include two exchangeable panels each with 16 outputs
• Each of the groups can connected to:
• 16 x BITS over BNC (ASYMM)
• 16 x BITS over RJ-48 (SYMM)
OSA 5430 Expansion Cards
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OSA 5430The intention of the demo is to show the performance achieved using OSA 5430
configured as PTP Grand master over 10G interface.
OSA 5430 connected to GPS antenna and to Calnex Paragon-X tester
GNSS antenna PTP over 10G Management
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Test Results – Time Error
Time Error within +/-
100nsec (+/-40nsec)
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5420/30 Sync assuranceprobing and monitoring
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Syncjack GUI Concept
Several layers of indicators allowing
for step by step monitoring and
troubleshooting
First layer provides global indication
of the Synchronization status
Second layer shows performance
indication of each reporting tool
Third layer provides detailed
information for fault localization of
performance analysis
1
2
3