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Webinar: Laying the foundations of phase timing

Making best use of precious spectrum assets requires precise frequency and phase timing synchronisation. This is increasingly important as networks increase capacity through densification with small cells and advanced LTE features. Building on years of experience and extensive field trials, Microsemi have evolved a product suite that delivers accurate frequency and phase timing at the network edge, making full use of the growing number of GNSS satellite constellations combined with wireline packet synchronisation.

In this webinar, Eric Colard, Head of Emerging Line of Business for Synchronisation at Microsemi, shares his experience gained from extensive field trials and discussions with operators in many regions, revealing many practical aspects and deployment issues. He’ll explain how GNSS signals can be received indoors - even inside windowless basements, why mounting on walls and ceilings can give differing results, and why common solutions are sought for both indoor and outdoor sites.

Looking to the future, many operators want to select a timing and synchronisation architecture that will satisfy their needs for many years - not just for the immediate demands of 3G and FDD-LTE, but LTE-Advanced, TD-LTE, NFV and even 5G. Robust timing and sync is a foundation capability for every cellular network and this webinar will clearly explain the industry requirements and issues.

Presenter: Eric Colard, Head of Emerging Line of Business,
Microsemi Synchronization Business Unit

Webinar: Laying the foundations of phase timing

  1. 1. © 2016 Microsemi Corporation 1 Power Matters.TM Laying the Foundations for Phase Timing Eric Colard Head of Emerging Line of Business
  2. 2. 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
  3. 3. Power Matters.TM 3© 2016 Microsemi Corporation Mobile Wireless Synchronization Requirements Mobile RF Input into Base Sta3on Inter Cell Alignment 50ppb 16 ppb GSM, 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
  4. 4. Power Matters.TM 4© 2016 Microsemi Corporation 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. ±100 ns Transport, Noise, & Network Asymmetry eNB PRTC ± 400 nsec ± 1000 nsec TP5000 TP2700 Microsemi PRTC
  5. 5. Power Matters.TM 5© 2016 Microsemi Corporation Time/Phase : The Time Error Budget ±100 ns Transport, Noise, & Network Asymmetry eNB PRTC ± 400 nsec ± 1000 nsec SOURCE OF TIME USE OF TIME Total eNB Inter Cell Time Error +/- 1.5 µsec from UTC Network Error Budget +/- 1 µsec GPS TRANSPORT OF TIME PRC
  6. 6. Power Matters.TM 6© 2016 Microsemi Corporation G.8275.1 Time Error Budget Up to 10 Time Boundary Clocks Total end to end Time Error Budget +/- 1.5usec Network Equipment eNB network asymmetry ±500ns Time Error PRTC to eNB +/- 1usec +/- 400ns for eNB slave clock 50ns ±100 ns PRTC PRTC ±250ns ±250ns dynamic 3me error
  7. 7. Power Matters.TM 7© 2016 Microsemi Corporation 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-SCPRTC GNSS Packet Network with Embedded Boundary Clocks T-BC T-BC T-BC T-BC
  8. 8. Power Matters.TM 8© 2016 Microsemi Corporation 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-SCPRTC GNSS BC Unicast Segment 1 Unicast Segment 2 Asynchronous Packet Network
  9. 9. Power Matters.TM 9© 2016 Microsemi Corporation §  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
  10. 10. Power Matters.TM 10© 2016 Microsemi Corporation 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
  11. 11. Power Matters.TM 11© 2016 Microsemi Corporation The IGM Family Expanded IGM Grand Master Timing Options for Network Edge Deployments IGM1100i Reinvented Indoor Small Cell Deployment •  Low Deployment Cost •  Small Form Factor •  High Performance Enhanced Indoor IGM1100i Solu3ons for outdoor deployment IGM 1100i Single model for wall and ceiling mounBng IGM 1100o Weatherproof IGM for outdoor installaBons IGM 1100x IGM with external antenna for specific applicaBons
  12. 12. Power Matters.TM 12© 2016 Microsemi Corporation 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
  13. 13. Power Matters.TM 13© 2016 Microsemi Corporation Traditional vs. Innovative models No Outdoor GNSS Antenna Similar easy installaBon as WiFi Access Point 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
  14. 14. Power Matters.TM 14© 2016 Microsemi Corporation §  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
  15. 15. Power Matters.TM 15© 2016 Microsemi Corporation North America Field trial
  16. 16. Power Matters.TM 16© 2016 Microsemi Corporation §  Metal “Cabinet” §  No Windows §  Challenges expected §  Worked great §  Door Open •  10 satellites §  Door Closed: •  7 Satellites Real-Life – Indoor working unexpected case
  17. 17. Power Matters.TM 17© 2016 Microsemi Corporation 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
  18. 18. Power Matters.TM 18© 2016 Microsemi Corporation Introducing Outdoor Version IGM-1100o Addressing scenarios : deep indoor, urban canyons, etc
  19. 19. Power Matters.TM 19© 2016 Microsemi Corporation §  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
  20. 20. Power Matters.TM 20© 2016 Microsemi Corporation §  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
  21. 21. Power Matters.TM 21© 2016 Microsemi Corporation §  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
  22. 22. Power Matters.TM 22© 2016 Microsemi Corporation §  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
  23. 23. Power Matters.TM 23© 2016 Microsemi Corporation §  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
  24. 24. Power Matters.TM 24© 2016 Microsemi Corporation §  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
  25. 25. Power Matters.TM 25© 2016 Microsemi Corporation Timelines & Product Updates Press Release and Product Launch @ Mobile World Congress Prototypes (Indoor Universal, MiniGM External) Prototype (Outdoor IGM) General Release (Outdoor IGM) Feb 2016 Mar 2016 Apr 2016 July 2016 Indoor Universal MiniGM Outdoor Version * V2 SoQware Update – July 2016 General Release (Indoor Universal & MiniGM Ext.)
  26. 26. Power Matters.TM 26© 2016 Microsemi Corporation §  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
  27. 27. Power Matters.TM 27© 2016 Microsemi Corporation 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 ©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. Microsemi makes no warranty, representation, or guarantee regarding the information contained herein or the suitability of its products and services for any particular purpose, nor does Microsemi assume any liability whatsoever arising out of the application or use of any product or circuit. The products sold hereunder and any other products sold by Microsemi have been subject to limited testing and should not be used in conjunction with mission-critical equipment or applications. Any performance specifications are believed to be reliable but are not verified, and Buyer must conduct and complete all performance and other testing of the products, alone and together with, or installed in, any end-products. Buyer shall not rely on any data and performance specifications or parameters provided by Microsemi. It is the Buyer’s responsibility to independently determine suitability of any products and to test and verify the same. The information provided by Microsemi hereunder is provided “as is, where is” and with all faults, and the entire risk associated with such information is entirely with the Buyer. Microsemi does not grant, explicitly or implicitly, to any party any patent rights, licenses, or any other IP rights, whether with regard to such information itself or anything described by such information. Information provided in this document is proprietary to Microsemi, and Microsemi reserves the right to make any changes to the information in this document or to any products and services at any time without notice. Microsemi Corporate Headquarters One Enterprise, Aliso Viejo, CA 92656 USA Within the USA: +1 (800) 713-4113 Outside the USA: +1 (949) 380-6100 Sales: +1 (949) 380-6136 Fax: +1 (949) 215-4996 email: Thank You!