Timing Excellence forMobile Backhaul NetworksDr. Michael RitterOctober 17th, 2012
ADVA Optical Networking    Our History     • More than 15 years of innovation    Our Markets     • Operator, enterprise, g...
Our Solutions    Ethernet Access                                      Metro                       Core     Optical Access ...
Evolution of the Mobile Network                                                                                    More   ...
Carrier Ethernet Backhaul         Scalable                                                       Economic        Technolog...
Frequency Distribution Is a Must      • Avoid interference between adjacent cells      • Soft handover for wireless mobili...
Precise Time Alignment Becomes Key    • Time Division Duplex (TDD) modes    • Coordinated Multi-Point (CoMP) transmission ...
Timing Distribution Alternatives    RAN synchronization is not trivial     •   Synchronous Ethernet vs. 1588v2     •   Lik...
3GPP LTE Architecture    Control plane separation and X2 interface     •   Departure from the traditional hub-and-spoke ar...
Network Technologies Are Manifold     Physical media alternatives      •   Fiber, microwave, copper – depending on availab...
Small Cells     Implications from small cell deployment      •   Many more sites though relaxed timing requirements      •...
Multi-Operator Environment     Mobile Network                      Access and Backhaul Network                            ...
Managing Synchronization Networks         Network                          Accuracy                                       ...
SyncjackTM Assurance           • Operates continuously without need for PRC             traceability           • Offset si...
In Essence         RAN synchronization has many dimensions to consider         Delivery is already a challenge         Ass...
Thank Youmritter@advaoptical.comIMPORTANT NOTICEThe content of this presentation is strictly confidential. ADVA Optical Ne...
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Timing Excellence for Mobile Backhaul Networks at Broadband World Forum

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Timing Excellence for Mobile Backhaul Networks at Broadband World Forum

  1. 1. Timing Excellence forMobile Backhaul NetworksDr. Michael RitterOctober 17th, 2012
  2. 2. ADVA Optical Networking Our History • More than 15 years of innovation Our Markets • Operator, enterprise, government, research & education Our Quality Commitment • TL 9000 and ISO 14001 Our Leadership • #1 in Ethernet Access Devices and #4 in Metro WDM “Our mission is to be the trusted partner for innovative Optical+Ethernet transport solutions that ADVANCE next-generation networks for data, storage, voice and video services.” Your trusted partner for speed and innovation2 © 2012 ADVA Optical Networking. All rights reserved. Confidential.
  3. 3. Our Solutions Ethernet Access Metro Core Optical Access Enterprise3 © 2012 ADVA Optical Networking. All rights reserved. Confidential.
  4. 4. Evolution of the Mobile Network More Connections More Video Faster Speeds More Users Usage patterns have changed in many dimensions4 © 2012 ADVA Optical Networking. All rights reserved. Confidential.
  5. 5. Carrier Ethernet Backhaul Scalable Economic Technology Solution Multi-Point Quality of Service Capability Differentiation Departing from TDM interrupts timing distribution5 © 2012 ADVA Optical Networking. All rights reserved. Confidential.
  6. 6. Frequency Distribution Is a Must • Avoid interference between adjacent cells • Soft handover for wireless mobility Frequency Synchronization • Required by all air TA=1/fA interface types A • Stability of 50pbb or TB=1/fB better required B fA = fB Synchronization must now be engineered into the network6 © 2012 ADVA Optical Networking. All rights reserved. Confidential.
  7. 7. Precise Time Alignment Becomes Key • Time Division Duplex (TDD) modes • Coordinated Multi-Point (CoMP) transmission • Essential for LTE Advanced • Inter-cell phase of less than ± 3µs High-quality synchronization required at all cell sites7 © 2012 ADVA Optical Networking. All rights reserved. Confidential.
  8. 8. Timing Distribution Alternatives RAN synchronization is not trivial • Synchronous Ethernet vs. 1588v2 • Likely combination of both • Underlying infrastructure needs to be capable Assured delivery Transparent Clock • Availability Time of Day Wander • Quality Frequency Assurance • Robustness Jitter Boundary Clock Tomorrow’s challenges need to be addressed today8 © 2012 ADVA Optical Networking. All rights reserved. Confidential.
  9. 9. 3GPP LTE Architecture Control plane separation and X2 interface • Departure from the traditional hub-and-spoke architecture • Deeper backhaul network compared to 2G MME HSS/PCRF Challenges • Network size S1-C S6a S1-C • Complexity X2 S11 Gxc S7/Gx • Latency & jitter S1-U S1-U S5/S8 SGi Technology PDN • GATEWAY UE eNodeB SGW PDN GW Internet Synchronization network needs to be planned carefully9 © 2012 ADVA Optical Networking. All rights reserved. Confidential.
  10. 10. Network Technologies Are Manifold Physical media alternatives • Fiber, microwave, copper – depending on availability and need • Likely a combination of all From layer 1 to layer 3 Microwave • Carrier Ethernet Fiber • OTN/WDM IP/MPLS Copper • IP/MPLS OTN/WDM Carrier Ethernet Active and passive participation in timing distribution10 © 2012 ADVA Optical Networking. All rights reserved. Confidential.
  11. 11. Small Cells Implications from small cell deployment • Many more sites though relaxed timing requirements • Multi-stage backhaul network infrastructure Various base station types • Macro cells Small Cells • Small cells PDN GATEWAY • Not so much femto cells Macro Cell Evolved Packet Core Femto Cells Synchronization network will grow significantly11 © 2012 ADVA Optical Networking. All rights reserved. Confidential.
  12. 12. Multi-Operator Environment Mobile Network Access and Backhaul Network Mobile Network Operator Operator Operator UNI UNI Cell Site Backhaul Network Mobile Core Characteristics of data and timing service defined at the UNI12 © 2012 ADVA Optical Networking. All rights reserved. Confidential.
  13. 13. Managing Synchronization Networks Network Accuracy Tools and View Measurement Procedures Topology Map Stability Monitor Alarm Browser Configuration Frequency Offset Sync Injection Status Display Time Offset Fault Tracer Integrated solution leveraging network performance data13 © 2012 ADVA Optical Networking. All rights reserved. Confidential.
  14. 14. SyncjackTM Assurance • Operates continuously without need for PRC traceability • Offset signal injection for frequency and time control Offset SyncjackTM Offset SyncjackTM PRC DPLL DPLL APLL APLL Correlation of information from both data and timing domain14 © 2012 ADVA Optical Networking. All rights reserved. Confidential.
  15. 15. In Essence RAN synchronization has many dimensions to consider Delivery is already a challenge Assurance is an important additional component Legacy and future needs have to be considered on top15 © 2012 ADVA Optical Networking. All rights reserved. Confidential.
  16. 16. Thank Youmritter@advaoptical.comIMPORTANT NOTICEThe 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 orrepresentations of any kind, either express or implied. ADVA Optical Networking shall not be responsible for and disclaims anyliability 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.

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