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Optimizing Backhaul for Picocells in 4G Networks Amir Makleff President and CEO BridgeWave Communications

Optimizing Backhaul for Picocells in 4G Networks Amir Makleff President and CEO BridgeWave Communications. Cell Size Evolution. Distances and bit rates are still being debated The general trend of higher bit rates/shorter distances is widely recognized. 2. Small Cell Drivers.

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Optimizing Backhaul for Picocells in 4G Networks Amir Makleff President and CEO BridgeWave Communications

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  1. Optimizing Backhaul for Picocells in 4G Networks Amir Makleff President and CEO BridgeWave Communications

  2. Cell Size Evolution • Distances and bit rates are still being debated • The general trend of higher bit rates/shorter distances is widely recognized © BridgeWave Communications www.bridgewave.com | 1-866-577-6908 2

  3. Small Cell Drivers • Macro Network Holes • Network holes between Macro Base Stations, originate from geography, building layout or legacy network planning • These “holes” yield slow data rates and dropped calls • Solution: • Pinpoint deployment of picocells in the middle of the Macro holes, to light up hard to reach strategic locations.

  4. Small Cell Backhaul Challenges Dense urban areas Large number of nodes to achieve coverage Different types of nodes in a variety of locations: In buildings Roof tops Street-level Light or utility poles High capacity Propagation in urban canyons Aesthetic fit (inconspicuous) Cost-effective

  5. Small Cell Backhaul Requirements • Low cost of equipment + installation • Low Opex/recurrent fees (e.g. license) • Small deployed footprint • Aesthetic fit in urban environments • Bit rates expandable up to 1 Gbps • To support mesh and daisy chaining • Short deployment lead time © BridgeWave Communications www.bridgewave.com | 1-866-577-6908 5

  6. Millimeter Wave Backhaul Point-to-point millimeter wave radios have some unique advantages for mobile backhaul: Abundance of spectrum High capacities Attractive licensing & highly-directive transmission Natural immunity to interference High frequency reuse Minimal frequency planning Short wavelength Small size of hardware and integrated solutions Quick deployment Low CapEx / OpEx

  7. mmW Spectrum A relatively recent addition to fixed PTP frequencies: V-band (“60GHz”) 7GHz (57-64GHz) Unlicensed (e.g., USA, UK) E-band (“80GHz”) 10GHz (71-76GHz and 81-86GHz) Light-licensing (e.g., USA, UK) Full licensing (e.g., Germany, Ireland)

  8. mmW Propagation 60GHz: Absorption of O2 ~14dB/Km Also rain 1-2Km for 1Gbps links @5’9s 80GHz: Rain 2-4Km for 1Gbps links @5’9s Neither is impacted by: Multipath fading due to narrow beams and relatively short links Fog (<0.4dB/Km) 60 GHz Excessive rain150mm/h Heavy rain25mm/h Fog Drizzle0.25mm/h 80 GHz

  9. mmW Directivity High gain and narrow beam-width achieved with small antennas Typical examples: Implications: Security Low probability of detection (LPD) Low probability of intercept (LPI) High interference immunity High frequency reuse “No” multipath 5.8 GHz = 1,140’ wide @ 1 mi 60 GHz = 128’ wide @ 1 mi

  10. mmW Frequency Reuse Frequency reuse facilitated by: Narrow beam width Oxygen absorption at 60GHz. At 60GHz, an infinite linear cascading of links may be achieved using only one pair of FDD frequencies and 2 polarizations: E.g., d=300m -> u=1500m -> CCI -20dB

  11. The Aesthetics Challenge Traditional direct mount and parabolic antennas are OK for rooftop / mast deployment Street-level deployment requires a different approach: Aesthetic Concealed / disguised Small footprint

  12. Concept Testing Tier-1 carrier field trial over several months

  13. mmW Backhaul for Small Cell - Revisited Excellent scalability Scalable capacity >1Gbps Distance scalable from picocell to macrocell backhaul Fast and simple deployment Good frequency reuse Good interference immunity Minimal frequency planning Good fit for urban environment Aesthetic, “concealed” solution Small footprint Low Cost Low Total Cost of Ownership per bps Minimal OpEx and recurring fees (e.g. license) Challenges Limited applicability in rural environments and other long-link scenarios

  14. Conclusions Small cell backhaul requires a combination of multiple solutions: “Backhaul Toolbox” Including fiber, microwave, millimeter wave, etc. Millimeter Wave radios offer distinct advantages for small cell backhaul: High capacity links Abundance of spectrum Good urban fit Fast and inexpensive deployment 60GHz solutions ideal for small cell deployments and is a proven technology for similar applications © BridgeWave Communications www.bridgewave.com | 1-866-577-6908 1-408-567-6900

  15. Thank You Amir Makleff President & CEO BridgeWave Communications For more information: White Papers: http://www.bridgewave.com/solutions/whitepapers.cfm Case Studies: http://www.bridgewave.com/solutions/casestudies.cfm Data Sheets: http://www.bridgewave.com/products/default.cfm Sales: 1-866-577-6908Fax: 1-408-567-0775 sales@bridgewave.com www.bridgewave.com BridgeWave Communications, Inc.3350 Thomas RoadSanta Clara, CA 95054 BridgeWave Communications, Inc. 3350 Thomas Road Santa Clara, CA. 95054 U.S.A. Tel: +1 (408) 567-6900 Fax: +1 (408) 567-0775 www.bridgewave.com

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