Synchronization Architecture for         3G and 4G Networks       Manish Gupta       Manish Gupta       Vice President, Ma...
Symmetricom Introduction                        Undisputed global leader of highly-precise timekeeping                    ...
Our Global Customers    Communications              Government    Power Utility               EnterpriseConfidential © Cop...
Trend #1: Explosive LTE Growth   over 3M LTE outdoor eNodeBs will be deployed by 2015 2,500,000                          L...
Trend #2: Ethernet drives multi‐sync in MBH   multi‐sync MBH, 90% to run Carrier Ethernet by 2016  Source: Infonetics, Jun...
Mobile Synchronization Specifications                                             Frequency:                 Application  ...
Why is Synchronization Required?                                               Why  You Need                Impact of     ...
Synchronization Architecture for 2G / 3G             SDH (E1 or CES)                      Frequency           Macro       ...
Synchronization Architecture for 4G / LTE‐FDD                   Ethernet                       Frequency                  ...
Synchronization Architectures for    4G / LTE‐TDD, LTE‐Advanced                   Ethernet                     Frequency &...
Synchronization Architectures for    4G / LTE‐TDD, LTE‐Advanced                   Ethernet                Frequency & Phas...
Small Cell Synchronization Scenarios     Core /                         Access                                            ...
Synchronization Technology Options          PTP 1588v2                     SyncE                     NTP                  ...
Synchronization Solutions for ALL networks                                                        TimePictra              ...
Ensuring Interoperability   SyncWorld® Ecosystem Program      Symmetricom has established the SyncWorld® Ecosystem Program...
Synchronization Recommendations   support all LTE services             1. Deploy GPS at select locations only             ...
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Synchronization Architecture for 3G and 4G Networks

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Synchronization Architecture for 3G and 4G Networks

  1. 1. Synchronization Architecture for  3G and 4G Networks Manish Gupta Manish Gupta Vice President, Marketing & Business Development Symmetricom y October 10, 2012Confidential © Copyright 2012
  2. 2. Symmetricom Introduction Undisputed global leader of highly-precise timekeeping technology, instruments and solutions • Headquarters in San Jose, California • Publicly traded on  NASDAQ (SYMM) • Incumbency with major customers in  over 100 countries • Global resellers: Ericsson, NSN, ALU • Partner in Brazil: Arsitec TechnologiesConfidential © Copyright 2012 2
  3. 3. Our Global Customers Communications Government Power Utility EnterpriseConfidential © Copyright 2012 3
  4. 4. Trend #1: Explosive LTE Growth over 3M LTE outdoor eNodeBs will be deployed by 2015 2,500,000  LTE Macro Stations Metro Small Cells  2,000,000  (cumulative units) 250mW to 5W (cumulative units) (cumulative units) 1,500,000  TDD‐LTE 1,000,000  FDD‐LTE 500,000  ‐Source: EJL 2011 A 2012 E 2013 E 2014 E 2015 E1,200,000 1 200 000 Metro Small Cells1,000,000  5W to 10W 800,000  (cumulative units) 600,000  TDD‐LTE FDD‐LTE 400,000  200,000  200 000 ‐ 2011 A 2012 E 2013 E 2014 E 2015 ESource: EJL Source: Heavy ReadingConfidential © Copyright 2012 4
  5. 5. Trend #2: Ethernet drives multi‐sync in MBH multi‐sync MBH, 90% to run Carrier Ethernet by 2016 Source: Infonetics, June 2011 & Mobile Experts Oct 2011 Source: Heavy Reading July 2011 Source: Heavy Reading, June 2012Confidential © Copyright 2012 5
  6. 6. Mobile Synchronization Specifications Frequency:  Application Phase Physical  / Air InterfaceUMTS/LTE FDD Residential small cell NA          /            100  ‐ 250 ppb NA GSM / UMTS / W‐CDMA NA CDMA2000  ± 3 to 10 µs  TD‐SCDMA ± 1.5 µs  LTE ‐FDD NA  16 ppb  /  50 ppb LTE ‐TDD ± 1.5 µs  LTE‐A   MBSFN ± 1 to 32 µs LTE‐A   Hetnet Coordination (ICIC) ± 5 µs LTE‐A   CoMP (Network MIMO)  ± 0.5 µs  WiMAX (TDD)  ± 1 to 8 µsConfidential © Copyright 2012 6
  7. 7. Why is Synchronization Required? Why  You Need  Impact of Application pp to Comply  t C l Non‐compliance N li Call Interference  LTE (FDD)  Call Initiation Dropped calls Packet loss/collisions LTE (TDD) Time slot alignment Spectral efficiency Proper time alignment alignment  of video signal  Video broadcast  LTE MBSFN  decoding   interruption  from multiple BTSs Coordination of  signals Poor signal quality  LTE A MIMO/COMP LTE‐A MIMO/COMP to/from multiple  to/from multiple at edge of cells, LBS  at edge of cells LBS base stations accuracy LTE‐A eICIC Interference  Spectral inefficiency & coordination Service degradationConfidential © Copyright 2012 7
  8. 8. Synchronization Architecture for 2G / 3G SDH (E1 or CES)  Frequency Macro Backhaul  Backhaul Synchronization Cells Management Primary Reference Distribution Base Stations Macro Cell CORE AGGREGATION ACCESS GPS / Cesium  PRS and Sync Supply Unit driven E1/T1 distributionConfidential © Copyright 2012 8
  9. 9. Synchronization Architecture for 4G / LTE‐FDD Ethernet Frequency Macro Cells Backhaul  Backhaul Synchronization Small Cells Small Cells Management Primary Reference Distribution Base Stations Macro Cell Metro  Small Cells Residential and Enterprise Small Cells CORE AGGREGATION ACCESS GPS/Cesium  PRS and PTP distribution from SSU or stand‐alone Grand  Master to Macro CellsConfidential © Copyright 2012 9
  10. 10. Synchronization Architectures for  4G / LTE‐TDD, LTE‐Advanced Ethernet Frequency & Phase Macro Cells Backhaul  Backhaul Synchronization Small Cells Small Cells Management Primary Reference Distribution Base Stations Macro Cell BC BC BC BC BC BC Metro  SyncE SyncE SyncE SyncE SyncE SyncE Small Cells Residential and Enterprise Small Cells CORE AGGREGATION ACCESS GPS/Cesium  PRS and PTP distribution Option #1:  BC in every network elementConfidential © Copyright 2012 10
  11. 11. Synchronization Architectures for  4G / LTE‐TDD, LTE‐Advanced Ethernet Frequency & Phase Macro Cells Backhaul  Backhaul Synchronization Small Cells Small Cells Management Primary Reference Distribution Base Stations Macro Cell Metro  Small Cells Residential and Enterprise Small Cells CORE AGGREGATION ACCESS Option #2:  GPS/Cesium  PRS and PTP distribution PTP  master “at the edge”Confidential © Copyright 2012 11
  12. 12. Small Cell Synchronization Scenarios Core /  Access Small Cells Aggregation Microwave/               IEEE 1588 (PTP) E‐Band//WiMAX GPS Fiber Metro IEEE 1588 (PTP) Network Time  Protocol (NTP) IEEE 1588 (PTP) Fiber softGPS PTP or NTP EoC NTP Enterprise NTP Cable  softGPS DSL ResidentialConfidential © Copyright 2012 12
  13. 13. Synchronization Technology Options PTP 1588v2 SyncE NTP GPS Frequency & Phase q y Frequency Only q y y Frequency Only q y y Frequency & Phase q y Layer 2 and 3 Physical Layer Layer 3 Physical Layer Cost & Location  Flexible Deployment Greenfield Deployments Limited Small Cell only challenges IEEE 1588, ITU‐T G.8261 G.8271 and G.8271.1  d IETF RFC 1305, RFC  IETF RFC 1305 RFC ITU‐T G.8261 / 2 / 4 ITU‐T G.811 G.8265.1, G.8275.1  5905‐8 (pre)Confidential © Copyright 2012 13
  14. 14. Synchronization Solutions for ALL networks TimePictra Sync Mgmt System Management GPS TimeProvider 500 TimeProvider 500 SSU 2000 TimeProvider 5000 TimeCesium TimeProvider 5000 “edge configuration” Rubidium Soft Clocks Primary Reference Distribution Base Stations Macro Cell Metro  Small Cells Residential and R id ti l d Enterprise Small Cells CORE AGGREGATION ACCESSConfidential © Copyright 2012 14
  15. 15. Ensuring Interoperability SyncWorld® Ecosystem Program Symmetricom has established the SyncWorld® Ecosystem Program to promote interoperability   among the vendors who will deliver on service providers’ advanced networking requirements. Network Equipment q p Silicon Microwave Backhaul  Test and MeasurementConfidential © Copyright 2012 15
  16. 16. Synchronization Recommendations support all LTE services 1. Deploy GPS at select locations only 2. Deploy PTP (1588 v2) everywhere Deploy PTP (1588 v2) everywhere 3. Ask for Rubidium atomic clocks in  Macro eNodeB for LTD‐A, LTE‐TDDConfidential © Copyright 2012 16

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