Transcript 6 - 38 GHz - MobilityTechzone
BridgeWave Communications
4GWE Keynote Session –
Small Cell Backhaul Options
September 13, 2011
New 4G Paradigm
Mobile networks up to 3G focused on coverage not capacity
Macro-cell approach was adequate, 3-5 km radius • Access = 100Mbps • Aggregation = 300 Mbps
4G is all about capacity
10-100 Mbps to handsets 170 Mbps per LTE sector Higher backhaul rates needed e.g. 1 Gbps Data rates to devices affected by distance from base station
Ubiquitous, high speed coverage requires divergence from macro-cell model 2 2
Small-Cell Drivers
To meet 4G capacity needs, higher base station densities are required
The only way to achieve this economically is to deploy small and inexpensive cells around the macro-cell
Small Cell Backhaul Challenges
Deployments required in diverse locations
Large number of nodes required due to coverage needs
Environment & Aesthetics
High capacity – up to 1 Gbps
Low cost (CAPEX & OPEX)
Short deployment lead time
Small Cell Backhaul Options
Fiber
Likely to address < 30% of small cell locations
Copper
Not enough copper pairs available to most locations
Wireless <6 GHz (NLOS)
Unlicensed (2.4/5.8 GHz) subject to interference Licensed – scarce and expensive resource (access)
Microwave frequency band (6 – 38 GHz)
Licensing and equipment cost Regulated min antenna size Limited capacity
….what about millimeter wave?
Spectrum for Backhaul
6 - 38 GHz (licensed)
Per link license typically $2K fee Long distance • 6 GHz up to 50 miles, 38 GHz up to 3 miles Optimized for speeds up to 350Mbps per channel
60 GHz unlicensed (free)
Excellent for short distances (1/2 to 1 mile) Gigabit speeds and urban environment friendly
70/80 GHz (lightly licensed)
Per link license <$100 Optimized for Gigabit speeds up to 2 miles Traditional MW Frequencies MMW Frequencies
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mmW Propagation
60GHz:
Absorption of O 2 ~14dB/Km 1-2Km for 1Gbps links @5’9s
80GHz:
2-4Km for 1Gbps links @5’9s
Neither is impacted by:
Selective fading (multipath) due to relatively short links Fog (<0.4dB/Km)
60 GHz
Excessive rain 150mm/h Heavy rain 25mm/h Fog Drizzle 0.25mm/h
80 GHz
mmW Directivity
High gain and narrow beam-width achieved with small antennas 5.8 GHz = 1,140’ wide @ 1 mi
Typical examples:
5” antenna
3dB / G A 10” antenna
3dB / G A
60GHz
5mm
1.0
/ 35dBi
0.5
/ 40dBi
Implications:
Security High interference immunity High frequency reuse
Comparison of beam width @ 1 mile:
5.8 GHz 24” 60 GHz 10”
60 GHz = 128’ wide @ 1 mi 8
The Aesthetics Challenge
Traditional parabolic antennas are OK for rooftop/tower/mast deployment
Street-level deployment requires a different approach:
Aesthetic Concealed / disguised Small footprint
Why 60 GHz for Small Cell Backhaul?
Ultra-High Capacity
Abundant spectrum available
Low Cost
Equipment enabled by new consumer indoor applications OpEx and recurring fees (e.g. license)
Robustness
O 2 effect Antenna directionality Excellent frequency reuse
Good fit for urban environment
Aesthetic, “concealed” solution Small footprint
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Picohaul Form Factor
4” diameter “pipe” delivers 1 GBps up to ½ mile
< 3 o beam width > 30 dBi gain Alignment hardware built-in Stackable Can incorporate RAN antenna
Future-proof design
Migrate to electronic alignment © BridgeWave Communications Confidential and Proprietary www.bridgewave.com | 1-866-577-6908 1-408-567-6900
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Mounting Options
Same Gbps backhaul solutions - multiple mounting options
A: Top of pole B: Side of pole C: BTS Top or inside D: Side of building (wall mount) www.bridgewave.com | 1-866-577-6908 COMPANY CONFIDENTIAL Confidential and Proprietary www.bridgewave.com | 1-866-577-6908 1-408-567-6900
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Usage Models
Macro-cell Level Rooftop Level Macro-cell Pico-Cell Level Street Level Pico-cell 13
What about line of sight?
30% of links in urban areas will not have LOS
NLOS solutions will be required
Millimeter wave superior when LOS is available
NLOS can be mitigated by planning • Daisy-chain, Mesh or Ring topologies © BridgeWave Communications www.bridgewave.com | 1-866-577-6908
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BridgeWave Communications
Focus: High-Capacity & 4G backhaul solutions
Founded in 1999
Privately held
100 Employees
Based in Silicon Valley, CA
Clearwire 4G Backhaul, NYC Corporate Headquarters: Santa Clara, CA, USA Metro DC Police – Video Surveillance Backhaul
Over 12,000 Systems Deployed in 60 Countries
Service Providers Municipalities Enterprise Government Healthcare Education
The High Capacity Market Leader
U.S. FCC 70/80 GHz Registrations
Data from 1/1/2011 thru 6/30/2011 based on FCC 70/80 GHz Registration Database
16.9%
© BridgeWave Communications Confidential and Proprietary
83.1%
www.bridgewave.com | 1-866-577-6908 1-408-567-6900 BridgeWave Others
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BridgeWave 4G Backhaul Solutions
Focused on solving tough backhaul challenges facing next-gen networks
Introduced FlexPort80 in 2009 – flagship carrier class product
Introduced GigE microwave (18 – 23 GHz) multi-channel products – Q4 2010
Introduced 3 Gbps FlexPort80 solution – Q1 2011
Introduced 60 GHz PicoHaul – small cell backhaul solution – Q1 2011
Millimeter Wave Microwave PicoHaul
Thank You
White Papers: Case Studies: Data Sheets: Amir Makleff President & CEO BridgeWave Communications
For more information:
http://www.bridgewave.com/solutions/whitepapers.cfm
http://www.bridgewave.com/solutions/casestudies.cfm
http://www.bridgewave.com/products/default.cfm
BridgeWave Communications, Inc.
3350 Thomas Road Santa Clara, CA 95054 Santa Clara, CA. 95054 U.S.A.
Tel: +1 (408) 567-6900 Fax: +1 (408) 567-0775
www.bridgewave.com
Sales: 1-866-577-6908 Fax: 1-408-567-0775 [email protected]
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