Breakout - Airheads Macau 2013 - Outdoor Wi-Fi

2. Agenda Aruba Outdoor Product Enhancements Antennas RF coverage Use Case: Access Use Case: Bridging Installation Best? PracticesCONFIDENTIAL Copyright 2013. Aruba Networks, Inc. All rights reserved2#airheadsconf

4. Aruba AirMesh Product FamilyMST200MSR4000 Outdoor Mesh Router Quad Radio, 802.11n Software configurable for 2.4, 5, or 4.9GHz MSR2000Outdoor Mesh Router Single Radio, 802.11n 5GHz Integrated MIMO antenna Outdoor Mesh Router Dual Radio, 802.11n Software configurable for 2.4, 5, or 4.9GHzMSR1200 Indoor Mesh Router Dual-Radio, 802.11n 2.4 or 5GHzAruba MeshOS Layer 3 Routing IntelligenceCONFIDENTIAL Copyright 2013. Aruba Networks, Inc. All rights reservedRF AwarenessVideo Optimization4Mobility#airheadsconf

6. Aruba (I)AP-175 802.11n Outdoor AP Performance Dual radios, 2.4-GHz and 5-GHz 300Mbps data rate per radio Purpose built IP66/67 and NEMA 4X rated POE, AC and DC versions Unprecedented Visibility Always-on visibility to noise sources Integrated wireless security on all radios Flexible Deployment Point-to-Point and Point-to-Multipoint Mesh for wireless backhaulCONFIDENTIAL Copyright 2013. Aruba Networks, Inc. All rights reserved6#airheadsconf

8. Outdoor Hardware Updates Number of incremental adds for outdoor MST200 AC powered unit added to March price list New power cables/accessories for this unit PC-OD-AC-P-INT AC Power Cord for MST200 AC International Version PC-OD-AC-P-NA AC Power Cord for MST200 AC International Version CKIT-OD-AC-P Connector for creating AC power assemblyNew flexible cables added as alternates ANT-CBL-1 Flexible 1m, low loss, RF cable assembly ANT-CBL-2 Flexible 2m, low loss, RF cable assembly2314/5314 Antennas 8CONFIDENTIAL Copyright 2013. Aruba Networks, Inc. All rights reserved8#airheadsconf

10. Goretex Vents These are being cut into all outdoor chasses They allow for air and vapor to pass but not liquid water or dust10CONFIDENTIAL Copyright 2013. Aruba Networks, Inc. All rights reserved10#airheadsconf

11. New Outdoor AntennasAruba has introduced two band specific antennas ANT-2x2-2314, 260x260x30 mm, 10.2x10.2x1.2 ANT-2x2-5314, 190x190x30 mm, 7.5x7.5x1.25 GHz antenna will be alternate to 5614 and should be the antenna of choice for P2P links Patterns are matched at 2.4 and 5 GHzCONFIDENTIAL Copyright 2013. Aruba Networks, Inc. All rights reserved11#airheadsconf

15. AP-LAR-24 Product Photo Suitable for direct mount 2.4 to 2.4835 GHz passbandFilters cellular, WiMAX 2.3 and 2.5 SURGE PROTECTION RATING 10kA IEC 61000-4-5 8/20s-40C to +85C/-40F to +185FIP66/67 rated Surge Side N type female Protected Side N type male15CONFIDENTIAL Copyright 2013. Aruba Networks, Inc. All rights reserved15#airheadsconf

18. Propagation Free Space Propagation -20*log(4*) 2.4 GHz you lose -40 dB in the first meter 5.8 GHz you lose -48 dB in the first meter Factors of 2 in distance are 6 dB Factors of 10 in distance are 20 dB Two Ray breakpoint model Propagation changes from R2 to R4 beyond this distance 4hthr ht: this is the height of the transmitter hr: this is the height of the receiver18CONFIDENTIAL Copyright 2013. Aruba Networks, Inc. All rights reserved18#airheadsconf

19. Fresnel Zone This is a football shaped area between two antennas that define the area needed to propagate the plane wave without excess power loss It reaches a maximum size half way across the link Distance Miles 0.25 0.5 1 2.5 519CONFIDENTIAL Copyright 2013. Aruba Networks, Inc. All rights reserved2.4 GHz Fresnel 0.6 Fresnel ft ft 11.6 7.0 16.5 9.9 23.3 14.0 36.8 22.1 52.0 31.2195 GHz Fresnel 0.6 Fresnel ft ft 7.5 4.5 10.7 6.4 15.0 9.0 23.7 14.2 33.5 20.1#airheadsconf

20. Antenna Basic Physics When the charges oscillate the waves go up and down with the charges and radiate away With a single element the energy leaves uniformly. Also known as omnidirectionally20CONFIDENTIAL Copyright 2013. Aruba Networks, Inc. All rights reserved20#airheadsconf

21. Building Arrays: 2 Elements By introducing additional antenna elements we can control the way that the energy radiates 2 elements excited in phase 9012060Linear Plot150301800105 210330907512060135/2240300 2704515030165151800195345210dB Plot330 225315 240300 25521CONFIDENTIAL Copyright 2013. Aruba Networks, Inc. All rights reserved21270285#airheadsconf

22. Building Arrays: 4 Elements By introducing additional antenna elements we can control the way that the energy radiates 4 elements excited in phase 9012060Linear Plot Equal amplitude1503018001059075330 1202106013524045300 15030270 165151800195345210dB Plot330 225315 240300 25522CONFIDENTIAL Copyright 2013. Aruba Networks, Inc. All rights reserved22270285#airheadsconf

23. Building Arrays: 4 Elements By shaping the amplitude we can control sidelobes 4 elements excited in phase 9012060Linear Plot Amplitude 1, 3, 3, 11503018001052109075330 1206013524045300 15030270 165151800195345210dB Plot330 225315 240300 25523CONFIDENTIAL Copyright 2013. Aruba Networks, Inc. All rights reserved23270285#airheadsconf

24. Building Arrays: 4 Elements Phase By altering phase we can alter the direction that the energy travels 4 elements excited with phase slope 9012060Linear Plot Even amplitude1503018001052109075330 1206013524045300 15030270 165151800195345210dB Plot330 225315 240300 25524CONFIDENTIAL Copyright 2013. Aruba Networks, Inc. All rights reserved24270285#airheadsconf

26. Reading Antenna Pattern Plots - Sector -3 dB Front-3 dBSide Back Backlobe AzimuthSidelobes ElevationSector Antenna (Logarithmic View) 26CONFIDENTIAL Copyright 2013. Aruba Networks, Inc. All rights reserved26#airheadsconf

28. Ant-2x2-2005 Antenna Patterns Model Measured105907512060a 1354515030165151800195345210330225315 240300 255CONFIDENTIAL Copyright 2013. Aruba Networks, Inc. All rights reserved28a 2702855 dB per division#airheadsconf

34. Ant-2x2-5010 Antenna Patterns Model Measured105907512060a 1354515030165151800195345210330225315 240300 25534CONFIDENTIAL Copyright 2013. Aruba Networks, Inc. All rights reserved34a 2702855 dB per division#airheadsconf

35. Ant-2x2-5010 Simple projection 901057512060a 135451503016515180019534521033022550m200 m 100 m315 240300a2552700m28520m5 dB per divisionAssuming 20m install height35CONFIDENTIAL Copyright 2013. Aruba Networks, Inc. All rights reserved35#airheadsconf

36. Analysis The heatmaps are shown across 100m by 100m and 1000m by 1000m areas These are flat earth models and the antenna is straight up above the plane 2 ray propagation effects are not included36CONFIDENTIAL Copyright 2013. Aruba Networks, Inc. All rights reserved36#airheadsconf

43. Customer Requirements Association capacity = 3,000 devices Dual band (2.4 GHz and 5 GHz) client access Heterogeneous mix of make / model / WNIC devices Active Users = 33% of associated devices Leverage existing controllers & AirWave Minimize interference with the indoor networkCONFIDENTIAL Copyright 2013. Aruba Networks, Inc. All rights reserved43#airheadsconf

45. 3D Model of RF Coverage Solution 12 APs mounted to parapets of 3 buildings Highly directional D607 sector antennas 60H x 60E Combined mechanical & electrical tilt = 30 3D model on right shows -55dBm cell edge CONFIDENTIAL Copyright 2013. Aruba Networks, Inc. All rights reserved45#airheadsconf

52. Bridging for Campus LANs Simple products and simple installations MST-200 (AirMesh) installed by todays integrators Typically - mounting rights require no extra permissions Bridging transparently extends ArubaOS Outdoor network is transparent to Aruba controllers and APs Role based users and existing policies simply extended Spanning Tree Algorithm used to prevent broadcast loopsCONFIDENTIAL Copyright 2013. Aruba Networks, Inc. All rights reserved52#airheadsconf

55. Simple Outdoor Point to Multi-Point Portable Classrooms require network access Trailers change location and number yearly - wireless is a fit! CONFIDENTIAL Copyright 2013. Aruba Networks, Inc. All rights reserved55#airheadsconf

57. Main School Portal Installation Simple products and simple installations MST-200 (AirMesh) can be installed by todays integrators Key Design Considerations Channel assignment / re-useCONFIDENTIAL Copyright 2013. Aruba Networks, Inc. All rights reserved57#airheadsconf

59. Simple Outdoor Point to Point Use Buildings to isolate RF for channel re-use Portals face trailers but below roof-line to avoid ACI / CCI CONFIDENTIAL Copyright 2013. Aruba Networks, Inc. All rights reserved59#airheadsconf

60. Capacity Planning For maximum capacity we need channels Use 20 MHz channels not 40 MHz - more channels available Example of 20 trailers in one area: ~80 Mbps of TCP good put out to a several hundred yards ~80 / 20 = Four Trailers per channel = ~20 Mbps per trailer Node to node contention factors Consider one portal and four remote trailers = 5 nodes The 20 Mbps per trailer now drops 20% = ~70 Mbps At 10 nodes per channel expected throughput = ~60 MbpsCONFIDENTIAL Copyright 2013. Aruba Networks, Inc. All rights reserved60#airheadsconf

63. Improperly Aimed Omni AntennasOmni antennas MUST be mounted perpendicular to the ground.CONFIDENTIAL Copyright 2013. Aruba Networks, Inc. All rights reservedOmnis are NOT yagis (or magic wands!) You do NOT point them at the target. 63#airheadsconf

64. Connecting Only 1 Antenna The previous photos also show only 1 antenna connected to the radio. Aruba regularly is asked by customers whether it is really necessary to hook up both antennas. Especially when upgrading old SISO gear to MIMO gear. MIMO systems are designed to have 2 (or more) active radio chains for both TX and RX. TX power is cut in half by not connecting an antenna on the 2nd radio chain. This reduces range by 30% and coverage area by 50%. CONFIDENTIAL Copyright 2013. Aruba Networks, Inc. All rights reserved64#airheadsconf

65. Correct Omni Antenna Installation Omnis must be installed perpendicular to the ground. Both antenna chains MUST have an antenna connected. For max performance you MUST use one H-pol and one V-pol omni antenna. These are sold in pairs by Aruba. CONFIDENTIAL Copyright 2013. Aruba Networks, Inc. All rights reserved65#airheadsconf

66. Improperly Aimed Sector Antennas The example on the left has the antenna aiming straight at the post, blocking the signal! The example on the right has the antenna aimed at the sky instead of the ground where clients are. CONFIDENTIAL Copyright 2013. Aruba Networks, Inc. All rights reserved66#airheadsconf

67. Bending / Damaging RF Cable Many cabling companies do not have experience with low-loss RF cable such as LMR or Heliax This installer bent the cable at 45 degrees at a building penetration. ANY damage to the geometry of a coaxial cable reduces its performance and increases loss. CONFIDENTIAL Copyright 2013. Aruba Networks, Inc. All rights reserved67#airheadsconf

68. Improper Antenna SeparationOmni antennas should not be placed directly against walls. This results in adverse changes to the pattern, as well as wasted signal absorbed into the structure.CONFIDENTIAL Copyright 2013. Aruba Networks, Inc. All rights reserved68When co-locating multiple antennas in an array, minimum horizontal and vertical separation distances MUST be computed to avoid having adjacent-channel interference take out all of the links #airheadsconf

69. Water Ingress Antenna radomes are not usually sealed. They have holes at the bottom designed to vent condensation and other water accumulation. NEVER face the weep holes straight up the antenna will fill with water the first time it rains! NEVER face a panel antenna straight down for the same reason (unless it is designed for this such as the AP-ANT-90) CONFIDENTIAL Copyright 2013. Aruba Networks, Inc. All rights reserved69#airheadsconf

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Breakout - Airheads Macau 2013 - Outdoor Wi-Fi