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Real-World Wi-Fi Capacity / Interference Testing

2011. Real-World Wi-Fi Capacity / Interference Testing. Top (Undeniable) Takeaways. 1. LONG. MEDIUM. SHORT. Ruckus continues to deliver the best performance at long ranges Downlink represents 80%+ of today’s enterprise traffic mix, Ruckus excels

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Real-World Wi-Fi Capacity / Interference Testing

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  1. 2011 Real-World Wi-Fi Capacity / Interference Testing

  2. Top (Undeniable) Takeaways 1 LONG MEDIUM SHORT Ruckus continues to deliver the best performance at long ranges Downlink represents 80%+ of today’s enterprise traffic mix, Ruckus excels ZoneFlex deliversmore aggregate throughput for high-capacity client environments Ruckus is the only vendor to mitigate interference Airtime fairness is critical and works best with Ruckus Ruckus provides all around consistency across all tests 2 “ 3 THE BOTTOM LINE Ruckus puts forth the best effort in the largest number of tests [and does so] with a mere 2x2:2 design and through engineering attention to the factors necessary to provide a high-quality wireless experience in increasingly hostile RF conditions. 4 5 ” 6

  3. What was the Big Difference? THEM US Dynamic 1:manyrelationship between Wi-Fi radiosand antennas Fixed 1:1 relationship between Wi-Fi radios and antennas

  4. Tom’s Test Environment 70’ (21m) LoS 10’ (3m) LoS Device (AP) Under Test Single client test locations Clients used for capacity and interference testing DUT DUT • OFFICE BUILDING DETAILS • 20,000+square feet • 6” sheetrock interior walls, metal studs • Steel frame • Tilt-up concrete slab • 12” stucco exterior walls • 5’tall, 2” cubicle walls • Noise floor: -90dBm 100’ (30m) LoS

  5. A Real Wi-Fi Testbed

  6. Devices Under Test Default (out of box) configuration used for all DUTs

  7. Test Details • Tools used • IxChariot 7.0 server and endpoints • IxChariot default WLAN high throughput TCP script using 1MB file transfer • 300+ tests run (including client rotations) • Open: no encryption • Single client testing • Dell Latitude E6410 laptop (3x3:3) • Windows 7 Professional OS • Intel Core i7 2.67GHz with 4GB RAM • Intel Centrino Ultimate-N 6300 AGN (driver version 13.1.1.1) • Multi-client testing • 60 Dell Vostro laptops • Intel Core i3- 2.27 GHz with 3 GB RAM • MS Windows XP professional SP3 • DW1520 Wireless-N WLAN half-mini card (Broadcom) • Driver 5.60.48.35 INTERFERENCE SOURCES • Non-802.11n interference • 2.4GHz interference generator • Co-channel interference • 60 laptops (5GHz) continuously downloading 1MB file over same channel from different AP

  8. What Was Measured • 5 GHz downlink TCP performance at 10’ LoS (no interference) • 5 GHz uplink TCP performance at 10’ (3m) LoS (no interference) • 5 Ghzdownlink TCP performance at 70‘ (21m) LoS (no interference) • 5 GHz uplink TCP performance at 70‘ (21m) LoS (no interference) • 5 GHz TCP downlink performance at 70‘ (21m) LoS (with interference) • 5 GHz TCP uplink performance at 70‘ (21m) LoS (with interference) • 2.4 GHz downlink TCP performance at 100‘ (30m) NLOS (no interference) • 2.4 GHz uplink TCP performance at 100' (30m) NLOS (no interference) • 2.4 GHz downlink TCP performance at 100' (30m) (with interference) • 2.4 GHz uplink TCP performance at 100' (30m) (with interference) • 5 GHz TCP Uplink aggregate throughput (with 60 clients) • 5 GHz TCP downlink aggregate throughput (with 60 clients) • 5 Ghz TCP bi-directional aggregate throughput (with 60 clients)

  9. Non-802.11 Interference (2.4 GHz) Channel Utilization With No Tests Running Amplitude of RF transmission over time Interferer transmission TIME Channel utilization CHANNELS

  10. Non 802.11 Interference (2.4 GHz) Channel Utilization During Single Client Performance Tests RF interference + Wi-Fi client transmissions (-50dBm to -60dBm) Break between tests TIME 85% channel utilization CHANNELS

  11. 802.11n Co-Channel Interference (5 GHz) Channel Capacity During Multi Client Performance Tests Wi-Fi transmissions (-50dBm) Test begins TIME 95% channel utilization CHANNELS

  12. Rate/Range Comparison (2.4GHz) Apple AirPort Extreme Aruba AP125 Cisco Aeronet 3502i HP E-MSM460 Meraki MR24 Ruckus ZoneFlex 7363

  13. Rate/Range Comparison(5GHz) Apple AirPort Extreme Aruba AP125 Cisco Aeronet 3502i HP E-MSM460 Meraki MR24 Ruckus ZoneFlex 7363

  14. 10’ (3m) Throughput Testing (5GHz) LEGEND Channel: 36 (40 MHz wide) Distance: 10 feet line of sight Interference: None Client: Single 802.11n client (3 stream capable)

  15. 70’ (21m) Throughput Testing (5GHz) Mbit/s LEGEND Channel: 36 (40 MHz wide) Distance: 70feet line of sight Interference: None Client: Single 802.11n client (3 stream capable)

  16. 70’ (21m) Throughput Testing (5GHz) Mbit/s LEGEND Channel: 36 (40 MHz wide) Distance: 70 feet line of sight Interference: Co-channel (60 clients to different AP) Client: Single 802.11n client (3 stream capable)

  17. 100’ (30m) Throughput Testing(2.4GHz) Mbps Mbps LEGEND Channel: 1 (20 MHz wide) Distance: 100 feet non line of sight Interference: None Client: Single 802.11n client (3 stream capable)

  18. 100’ (30m) Throughput Testing (2.4GHz) Mbps Mbps LEGEND Channel: 1 (20 MHz wide) Distance: 100 feet non line of sight Interference: 2.4 GHz interference generator Client: Single 802.11n client (3 stream capable)

  19. High Capacity Wi-Fi Testing (5GHz) IxChariot Aggregate TCP Throughput: Continuous 1MB Download from 60 Clients TCP Downlink TCP Uplink Failed to finish Failed to finish Mbps

  20. More Downlink Capacity (5GHz) IxChariot Aggregate TCP Throughput: Continuous 1MB Download from 60 Clients Ruckus 7363 111 HP E-MSM460 88 76 Aruba AP125 Meraki 24* 47 38 Cisco 3502i AirPort Extreme* 4 *Meraki and Apple unable to complete test runs

  21. More Uplink Capacity (5GHz) IxChariot Aggregate TCP Throughput: Continuous 1MB Download from 60 Clients 96 Ruckus 7363 77 HP E-MSM460 Aruba AP125 69 Cisco 3502i 62 42 Meraki 24* 54 AirPort Extreme* *Unable to complete test runs

  22. High Capacity Wi-Fi Testing (5GHz) IxChariot Aggregate TCP Throughput: iPads and Laptops

  23. Airtime Fairness Matters More Now • Proliferation of different devices • Widely varying 11n capabilities: • Peak iPad throughput = 13 Mbps • Good .11n laptop > 100 Mbps • User revolt with any disproportional impact on bandwidth from growing quantities and variety

  24. Not All ATF Approaches are Fair Test: Single AP to 10 iPads + 1, 10, or 60-count 802.11n laptops Proportionality of Traffic Impact from Laptop Additions Starves iPads 100% Perfectly Proportional Impact Starves Laptops 100% Fails to support client count Ruckus Apple Aruba Cisco HP Meraki

  25. What’s Behind Tom’s Results? • Patented technology that combines: • Smart antenna arrays • Best path selection algorithms • Advanced quality of service engine • Smart mesh RF routing • Centralized Wi-Fi management • Adapts to real-time changes in environmental conditions • Extends Wi-Fi coverage 2 to 3 times • Radically simplifies deployment Interference

  26. Adaptive Wi-Fi Control Patented adaptive antenna array combined with expert (best path) signal control software Directional, high-gain multi-element smart antenna Continually picks the best signal path to clients Adaptive antenna switching and dynamic beamsteering

  27. And Clever Networking, Too…

  28. Redefining WLAN Price/Performance Indoor/outdoor802.11n APs • 1. • Deploy inhalf the time at half the cost Scalable WLANcontrollers out of data path Simple, robust remote management of APs and WLANs • 2. • 100% performance increase over any other 802.11n WLANs SmarterWLAN applications Remote Wi-Fi systems management

  29. Unrivaled Consistency

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