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Backhauling Small Cells
Ulrich Kohn discusses small cell backhauling and synchronization. Small cells improve coverage and bandwidth by supplementing macro cells. Fronthaul networks digitally transport small cell signals over fiber. Emerging architectures use centralized baseband units pooled in a data center and remote radio heads at antenna sites. Synchronization is critical and can be enabled through boundary clocks, transparent transport, and co-located boundary clocks and transport controllers. ADVA Optical Networks provides solutions for fronthaul networks, carrier Ethernet backhaul, synchronization, and assurance to support small cell deployments.
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Backhauling Small Cells
- 1. Backhauling Small Cells BroadbandWorld Forum; Amsterdam, Oct 23rd Ulrich Kohn – Director Technical Marketing
- 2. Innovation in MobileTechnologies Small Cells PDN GATEWAY Macro Cell Evolved Packet Core Femto Cells 2 © 2013 ADVA Optical Networking. All rights reserved. Confidential.
- 3. Increasing Coverage andBandwidth: LTE and Higher Base Station Density Step 1: Increase spectral efficiency e.g. introduce LTE, higher power Macro Cells, MIMO Step 2: Add further macro cells Step 3: Introduce “small cells”: • common mobile technology interference coordination • HetNet featuring WiFi offloading 3 © 2013 ADVA Optical Networking. All rights reserved. Confidential.
- 4. Architectural Options Pool of BasebandUnits MBH S1flex Interface RBS RU RRH RRH RRH BBU 3 RBS RRH RRH RRH RU BBU 3 RBS RRH RRH RRH RU BBU MBH S1flex Interface CPRI Interface Fronthaul Network X2 Interface Conventional Base Stations • Time/Phase accuracy < 1.5µs • Inter-RBS delay < 1ms • Inter-RBS bandwidth: moderate Spectral efficiency: moderate 4 3 BBU BBU BBU BBU BBU BBU BBU BBU BBU BBU BBU BBU Remote Radio Head Solution • Digitized RF Baseband -> Line rates at 1…10Gbit/s -> fiber • Stringent delay/ jitter requirements -> distances up to 40km Spectral efficiency: high © 2013 ADVA Optical Networking. All rights reserved. Confidential.
- 5. Emerging Backhaul Architecture EdgeRouter/ Security Gateway BBU BBU BBU BBU BBU BBU BBU BBU BBU Fronthaul Network Pool of Baseband Units Transparent optical transmission Backhaul Network IP connectivity over EPLs/EVLANs any mobile technology Time/Phase synchronization Lowest delay/jitter Scalability Scalability Security Reduced site cost: CAPEX, OPEX Automated provisioning/activation 5 © 2013 ADVA Optical Networking. All rights reserved. Confidential.
- 6. Favorable Fronthaul Implementation RRH RRH BBU RRH BBU BBU RRH BBU BBU BBU RRH BBU BBU Solutionsuite for • Non-intrusive monitoring of fiber integrity • Optical service assurance • Automated configuration 6 © 2013 ADVA Optical Networking. All rights reserved. Confidential.
- 7. DWDM Requirements • SingleFiber Working / Dual Fiber Working • Configurations for 1…8 channels per antenna site • Chains, stars, rings • Optical performance and fiber integrity assurance • Minimize active cell site components • Photonic resilience 7 © 2013 ADVA Optical Networking. All rights reserved. Confidential.
- 8. Emerging Backhaul Architecture EdgeRouter/ Security Gateway BBU BBU BBU BBU BBU BBU BBU BBU BBU Fronthaul Network Pool of Baseband Units Transparent optical transmission Backhaul Network IP connectivity over EPLs/EVLANs any mobile technology Time/Phase synchronization Lowest delay/jitter Scalability Scalability Security Reduced site cost: CAPEX, OPEX Automated provisioning/activation 8 © 2013 ADVA Optical Networking. All rights reserved. Confidential.
- 9. Phase Synchronization Enablement#1 Sync Probe GPS Antenna BBU Slave Clocks RBS RU PTP Grandmaster BBU GPS Antenna Sync Probe / Mini GM • • Sync Probe Mini GM 9 • PTP traffic Assessment of PTP Performance Boundary clock providing superior clock recovery algorithm Fallback with PTP Grandmaster © 2013 ADVA Optical Networking. All rights reserved. Confidential.
- 10. Phase Synchronization Enablement#2 Sync Probe Mini GM BBU Slave Clocks RBS RU PTP Grandmaster BBU Sync Probe Mini GM • Sync Probe Mini GM Transparency • Reducing number of hops by transparent transport Side effect: adds network capacity Time 10 © 2013 ADVA Optical Networking. All rights reserved. Confidential.
- 11. Phase Synchronization Enablement#3 Sync Probe Mini GM Co-located BC/TC BBU Slave Clocks RBS RU PTP Grandmaster BBU Sync Probe Mini GM Sync Probe Mini GM Co-located BC/TC TransIntelligent parency complement • Complement with co-located BC/TC featuring SyncJack • Sync performance management Time 11 © 2013 ADVA Optical Networking. All rights reserved. Confidential.
- 12. Seamless Synchronization Deployment Syncjack™service assurance Sync Portal Sync Map Sync Quality Sync Path • Toolbox for synchronization delivery and assurance • • • Performance assessment of network and/or RBS Slave Clock IEEE1588 PTP slave/boundary clock Passive tapping, active probing and testing mode • Superior timing recovery algorithm with fallback to Mini Grand Master Syncprobe • Upgrading non-1588v2 enabled networks • End-to-end synchronization network management platform • Tapping & parallel deployment modes • Complete Syncjack™ implementation 12 © 2013 ADVA Optical Networking. All rights reserved. Confidential.
- 13. Small Cell Backhaul Summary Fronthaul Network Synchronization Enablement Comprehensive Portfolio Bestradio spectrum efficiency and relaxed backhaul requirements Investment protection and performance assurance Synchronisation DWDM Carrier Ethernet Assurance ADVA Optical Networks protects your investment and paves the way to higher network performance 13 © 2013 ADVA Optical Networking. All rights reserved. Confidential.
- 14. Are you insync? Let`s do a sync game at our booth! ukohn@advaoptical.com 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.