backhauling small cells
DESCRIPTION
Check out Ulrich Kohn's presentation, "Backhauling Small Cells," from Broadband World Forum 2013.TRANSCRIPT
Broadband World Forum; Amsterdam, Oct 23rd
Ulrich Kohn – Director Technical Marketing
Backhauling Small Cells
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Innovation in Mobile Technologies
WCDMAHSPA(+)
Macro Cell
Small Cells
Femto Cells
EvolvedPacket Core
PDNGATEWAY
802.1acEDGE
802.1ad
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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
Increasing Coverage and Bandwidth:LTE and Higher Base Station Density
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Conventional Base Stations
• Time/Phase accuracy < 1.5µs
• Inter-RBS delay < 1ms
• Inter-RBS bandwidth: moderate
Spectral efficiency: moderate
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
Architectural Options
RU
BBU
RBS
RU
BBU
RBS
RU
BBU
RBS
MBH
X2 Interface
S1flexInterface
Fronthaul Network
RRHRRHRRH
RRHRRHRRH
RRHRRHRRH
Pool of Baseband Units
3
3
3
BBUBBU
BBU
BBUBBU
BBU
BBUBBU
BBU
BBUBBU
BBU
MBH
S1flexInterface
CPRI Interface
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Emerging Backhaul Architecture
BBU
BBU
BBU
BBUBBU
BBU
BBUBBU
BBU
Pool of Baseband Units
Edge Router/Security Gateway
Transparent optical transmission any mobile technology Lowest delay/jitter Scalability Reduced site cost: CAPEX, OPEX
IP connectivity over EPLs/EVLANs Time/Phase synchronization Scalability Security Automated provisioning/activation
Fronthaul Network Backhaul Network
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Solution suite for• Non-intrusive monitoring of fiber integrity
• Optical service assurance
• Automated configuration
Favorable Fronthaul Implementation
RRH
RRH
RRH
RRHRRH
BBU
BBU
BBU
BBUBBU
BBU
BBU
BBU
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DWDM Requirements
• Single Fiber 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
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Emerging Backhaul Architecture
BBU
BBU
BBU
BBUBBU
BBU
BBUBBU
BBU
Pool of Baseband Units
Edge Router/Security Gateway
Transparent optical transmission any mobile technology Lowest delay/jitter Scalability Reduced site cost: CAPEX, OPEX
IP connectivity over EPLs/EVLANs Time/Phase synchronization Scalability Security Automated provisioning/activation
Fronthaul Network Backhaul Network
© 2013 ADVA Optical Networking. All rights reserved. Confidential.99
BBU
RU
BBU
RBS
Phase Synchronization Enablement #1
PTP Grandmaster
Slave Clocks
Sync ProbeMini GM
• Assessment of PTP Performance• Boundary clock providing superior
clock recovery algorithm• Fallback with PTP Grandmaster
PTP traffic
GPS Antenna
Sync Probe / Mini GM
GPS Antenna
Sync Probe
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BBU
RU
BBU
RBS
Phase Synchronization Enablement #2
PTP Grandmaster
Slave Clocks
Time
Sync ProbeMini GM
• Reducing number of hops by transparent transport
• Side effect: adds network capacityTrans-
parencySync Probe
Mini GM
Sync ProbeMini GM
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BBU
RU
BBU
RBS
Phase Synchronization Enablement #3
PTP Grandmaster
Slave Clocks
• Complement with co-located BC/TC featuring SyncJack
• Sync performance managementTrans-
parencyIntelligent
complement
Co-located BC/TC
Co-located BC/TC
Time
Sync ProbeMini GM
Sync ProbeMini GM
Sync ProbeMini GM
© 2013 ADVA Optical Networking. All rights reserved. Confidential.1212
• 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
• End-to-end synchronization network management platform
Seamless Synchronization DeploymentSyncjack™ service assurance
Sync PortalSync Map
Sync Quality
Sync Path
Syncprobe
• Upgrading non-1588v2 enabled networks
• Tapping & parallel deployment modes
• Complete Syncjack™ implementation
© 2013 ADVA Optical Networking. All rights reserved. Confidential.1313
Small Cell BackhaulSummary
FronthaulNetwork
Synchronization Enablement
Comprehensive Portfolio
Best radio spectrum efficiency and relaxed
backhaul requirements
SynchronisationDWDM
Carrier EthernetAssurance
Investment protection and performance
assurance
ADVA Optical Networks protects your investment and paves the way to higher network performance
Are you in sync? Let`s do a sync game at our booth!
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