webinar: laying the foundations of phase timing

© 2016 Microsemi Corporation 1

Power Matters.TM

Laying the Foundations for Phase Timing Eric Colard Head of Emerging Line of Business

Power Matters.TM 2 © 2016 Microsemi Corporation

Sync Evolution World Wide – what we see

What is happening §  Globally operators have

rolled out LTE and are now planning or preparing for LTE-A phase delivery

§  USA §  Japan, Korea §  China, Taiwan §  India §  UK, Germany, France, Italy

Spain, Scandinavia §  Turkey, Indonesia,

Philippines, Vietnam…..

Why §  Need a stable frequency

network to support existing and future applications

§  Especially phase / time

§  Graceful migration of the Core SDH to SyncE / OTN

§  LTE, LTE-A, LTE Pro etc §  Small cells & 5G hetnet §  Distributed clocks

everywhere


Mobile Wireless Synchronization Requirements

MobileRF InputintoBaseSta3on InterCellAlignment

50ppb16ppbGSM,WCDMA

LTE-FDD

LTE-FDD(frequency)LTE-TDD(Phase)

Most LTE-A services require inter cell phase

sync (eICIC, CoMP, eMBMS, MBSFN)

±1.1µs

50ppb

±1.5µs(phase)

A few LTE-A functions do not require phase, Carrier Aggregation for example does not


The Source of Traceable Time - Primary Time Reference Clock (PRTC) G.8275

•  Frequency requires a Primary Reference Clock (PRC)

•  Usually a Cesium clock but can also be GPS

§  Time/Phase requires a Primary Reference Time Clock (PRTC)

§  The PRTC reference must come from GNSS

§  The PRTC output must be traceable to UTC.

±100ns

Transport,Noise,&NetworkAsymmetry eNB

PRTC ±400nsec±1000nsec

TP5000

TP2700

Microsemi PRTC


Time/Phase : The Time Error Budget

±100ns

Transport,Noise,&NetworkAsymmetry eNB

PRTC ±400nsec

±1000nsec

SOURCE OF TIME

USE OF TIME

TotaleNBInterCellTimeError+/-1.5µsecfromUTC

NetworkErrorBudget+/-1µsec

GPS

TRANSPORT OF TIME

PRC


G.8275.1 Time Error Budget

Upto10TimeBoundaryClocks

TotalendtoendTimeErrorBudget+/-1.5usec

Network Equipment eNB

networkasymmetry

±500ns

TimeErrorPRTCtoeNB+/-1usec

+/-400nsforeNB

slaveclock50ns

±100nsPRTC

PRTC

±250ns ±250ns

dynamic3meerror


G.8275.1 Time Profile: Full On Path Support

Attributes •  PTP Multicast over Layer 2 network •  “Time Boundary Clock” (T-BC) on every network element •  Physical layer frequency support from syncE (needs a PRC) •  Max Hops: 10 (20 is currently theoretical) •  Provides “hop by hop” engineering guideline for time/phase as per SEC/EEC

PRC

GM

End Equipment

Time Slave Clock

T-SC PRTC GNSS

Packet Network with Embedded Boundary Clocks

T-BC T-BC T-BC T-BC


G.8275.2 Time Profile:Partial On Path Support

•  In G.8275.2 we place a Boundary Clock at the most effective point on the

transport path •  PTP Unicast mode “Segments” are added together to make an end-to-end

sync chain •  Some may cross legacy routers

PRC

GM

End Equipment

Time Slave Clock

T-SC PRTC GNSS

BC

Unicast Segment 1 Unicast Segment 2

Asynchronous Packet Network


§  Time Error accumulates as packets go across the network

§  ITU-defined budget for Transport Network accumulated time error is +/-1usec maximum to deliver the Clock to the eNodeB

§  Constant time error can easily be corrected with a fixed offset

§  Dynamic time error from

Summary: Time Error Budget The Key to Time/Phase

Asymmetry is the biggest problem for engineering phase on a network

Switch router element inherent noise Uplink downlink asymmetry Packet Buffering delays


Asymmetry : Solutions

§  Not completely solved by using Boundary Clocks §  Manually measure each link and configure offset

compensation

§  Microsemi proposed and offers : • Asymmetry compensation : automatically calibrate the sync path,

using a GNSS reference • Advanced multi-sync clock functions to deliver these frequency and

time services • Minimise asymmetry by placing PRTC clocks close to the eNB


The IGM Family Expanded IGM Grand Master Timing Options for Network Edge Deployments

IGM1100iReinventedIndoorSmallCell

Deployment

•  LowDeploymentCost•  SmallFormFactor•  HighPerformance

EnhancedIndoorIGM1100i Solu3onsforoutdoordeployment

IGM1100iSinglemodelforwallandceilingmounBng

IGM1100oWeatherproofIGMforoutdoorinstallaBons

IGM1100xIGMwithexternalantennaforspecific

applicaBons


Key Synchronization Requirements §  eNodeBs require accurate timing §  Timing is dependent on GNSS

Critical Problems

Challenges for Indoor Deployment

High Cost of GPS antenna cabling Roof access/rental fees Installation Costs through several floors Operators requesting less devices to deploy and manage – combining functions into single device

Offices with Small Cell

1588 Grandmaster in Server Room

GNSS Antenna


Traditional vs. Innovative models

NoOutdoorGNSS

Antenna

SimilareasyinstallaBonasWiFiAccessPoint

20 m 150 m 230m

GNSS Kit $1,000 $2,500 $2,800

N.A, Europe Emerging Large Cities

Capex, Opex

$5K to $20K $1,200 to $5K

$25K up to $65K


§  More clients : max was 8, now is 16

§  More management options : •  CLI over SSH •  Pre defined IP @ vs. DHCP

§  More resiliency •  Config data stored in non-volatile memory •  2 antennas, Universal mounting vs. wall or ceiling, same unit

§  More Sync Capabilities •  SyncE Output •  Telecom 2008 profile •  Default profile

Enhancements for Indoor version


North America Field trial


§  Metal “Cabinet” §  No Windows §  Challenges expected

§  Worked great

§  Door Open •  10 satellites

§  Door Closed: •  7 Satellites

Real-Life – Indoor working unexpected case


Use Case – windows or no windows

§  Melia in Sevilla §  Conference Room §  No Windows §  Sub-Ground Floor : -1 §  No A-GNSS §  Worked great

§  Gherkin, London §  Plenty of Windows §  High Floor §  Challenging


Introducing Outdoor Version IGM-1100o

Addressing scenarios : deep indoor, urban canyons, etc


§  1588 PTP GM is integrated with Antenna (on roof)

§  Cabling for GNSS antenna to master not needed - Deployment Cost savings, Ethernet cabling vs GPS cable

§  Common Software with Indoor version (A-GNSS not needed)

§  Environmental & Temp Range benefits - Operating -40C to +70C

§  IGM Outdoor complies with GR-3108, GR-108, GR-63

§  PoE §  Plug & Play

Value of Outdoor version


§  IGM Outdoor (1100o) connected to indoor PoE Midspan

§  Outdoor installations should take care of lighting protection system: •  Indoor PoE should be isolated – needs to be single port injector •  Primary surge protection device needed as close as possible to inlet

to building & connected to earth ground : PD-OUT/SP11 •  Secondary surge protection in the 1 port PoE injector :

PD-9001G-40/SP Midspan

Guidelines – IGM outdoor & PoE indoor

PD-9001G-40/SP PD-OUT/SP11


§  IGM-1100o connected to Outdoor PoE switch §  Only makes sense if there are more than 1 outdoor devices, for instance

1 IGM Outdoor and 1 outdoor security camera §  For instance 2 port PDS-102GO or 4 port PDS-104GO §  IGM Outdoor complies with GR-3108, GR-108, GR-63 so no need for

optional PD-OUT/SP11 §  Depending length of cable, if it is short there is no need for 2 units PD-

OUT/SP11, if it is long there is a need for 2 PD-OUT/SP11 (one to protect IGM, 1 to protect inlet to building)

Guidelines – IGM Outdoor, PoE outdoor

PD-OUT/SP11 PDS-102GO Outdoor PoE Switch

PDS-104GO Outdoor PoE Switch


§  Cabinet or Hut with devices serving Pico or Micro eNodeBs

Serving eNodeBs – not Temp Controlled

On Pole if needed if vandalism concerns

Outdoor IGM IGM-1100o


§  Temperature- Controlled Cabinet/Hut or office/rack §  Serving Pico or Micro eNodeBs

Serving eNodeBs at very edge

IGM connected to external GNSS antenna IGM-1100x


§  Auto-Configuration Server (ACS) – TR069 •  Free, limited features, demo version •  Commercial version for deployments •  Auto-configuration and network interactions mimic processes and

systems used by small cells •  TR069 server, DNS server, etc

§  CLI over SSHv2 •  For environments where no ACS available •  Limited capabilities. Enhancements coming in v2

§  SNMP •  TimePictra used for SNMP traps

§  TP10 & ACS integration on roadmap

Management


Timelines & Product Updates

PressReleaseandProductLaunch@MobileWorldCongress

Prototypes(IndoorUniversal,MiniGM

External)

Prototype(OutdoorIGM)

GeneralRelease(OutdoorIGM)

Feb2016 Mar2016 Apr2016 July2016

IndoorUniversal

MiniGM

OutdoorVersion

*V2SoQwareUpdate–July2016

GeneralRelease(IndoorUniversal&MiniGMExt.)


§  Phase timing becoming essential §  Microsemi has a lot of relevant practical experience §  Relying on embedded sync solutions isn’t adequate §  Dedicated master at mobile edge is cost effective and easy

to deploy §  IGM Portfolio offers choice for various use cases

Summary

Finalist


Microsemi Corporation (MSCC) offers a comprehensive portfolio of semiconductor and system solutions for communications, defense & security, aerospace and industrial markets. Products include high-performance and radiation-hardened analog mixed-signal integrated circuits, FPGAs, SoCs and ASICs; power management products; timing and synchronization devices and precise time solutions, setting the world's standard for time; voice processing devices; RF solutions; discrete components; enterprise storage and communication solutions, security technologies and scalable anti-tamper products; Ethernet solutions; Power-over-Ethernet ICs and midspans; as well as custom design capabilities and services. Microsemi is headquartered in Aliso Viejo, Calif., and has approximately 4,800 employees globally. Learn more at www.microsemi.com

©2016 Microsemi Corporation. All rights reserved. Microsemi and the Microsemi logo are registered trademarks of Microsemi Corporation. All other trademarks and service marks are the property of their respective owners.

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webinar: laying the foundations of phase timing

Technology