Outdoor Mesh Wireless Networks


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Presentación de Esteban Almirón, de Logicalis Southern Cone, en las jornadas tecnológicas de Viedma. Noviembre de 2012.

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Outdoor Mesh Wireless Networks

  1. 1. Jornadas de actualización tecnológica en Viedma Noviembre 20121
  2. 2. Outdoor MeshWireless NetworksEsteban Almirónesteban.almiron@la.logicalis.com 2
  3. 3. Agenda1. Situación actual y tendencias2. ¿Qué es Outdoor Wireless?3. Arquitectura de la solución Outdoor Wireless Mesh3
  4. 4. 4
  5. 5. Esto es normal?5
  6. 6. El tráfico de datos móvil se duplica cada añoEl 70% es tráfico de video Fuente: Cisco Visual Networking Index (VNI) Global Mobile Data Forecast, 2011–2016 http://www.cisco.com/en/US/solutions/collateral/ns341/ns525/ns537/ns705/ns827/6 white_paper_c11-520862.html
  7. 7. Celdas pequeñas permiten mejorar la capacidad 26x Growth Macro 2G/3G/4G 1000 Macro CapacityGrowth 100 Spectrum 10 1 Consumer 1990 1995 2000 2005 2010 2015 Business Community Source: Agilent Wi-Fi complements 3/4G Networks Para satisfacer la demanda de Internet móvil, en el futuro próximo las redes deberán integrarse con arquitecturas de celdas pequeñas 7
  8. 8. Outdoor Wireless8
  9. 9. Qué entendemos por Oudoor Wireless?Dispositivos de Tecnologías de Broadbandusuario WiFi, HSxPA, HiperLan MaNet, LTE… ¿Qué es outdoorMovilidad wireless? Aplicaciones 9
  10. 10. Qué entendemos por Oudoor Wireless? Municipalidades Service Provider Empresas Transporte Ciudad Digital Opción de última Extensión de la Operaciones Aplicaciones milla cobertura indoor ferroviarias Municipales(CCTV, estacionamiento, 3G Offload (Univeridades, Serguridad sensotes) Industria y Logística, Servicios de valor etc) Servicio al cliente Comunidad agregado Conectada 10 Redes WiFi Outdoor como Plataforma
  11. 11. Beneficios – WiFi OutdoorBajo costo Estándar  Interoperabilidad entre Espectro no licenciado dispositivos y CPEs. Gran cantidad de proveedores  Vigente en el mercado (ej. Disponibilidad de clientes Seguridad)  Global. Mismas frecuencias ¿Por qué para todos. WiFiTecnología Madura Outdoors? Escalable & Fácil de usar Puede mitigar interferencias  Solo agregar nodos Amplio espectro no  Bajo impacto en nuevos sitioslicenciado (> 300 MHz)  Extensión outdoor de las Puede ofrecer ancho de wireless LAN clásicas.banda en cualquier lugar 11
  12. 12. Arquitectura Outdoor Wireless Mesh12
  13. 13. Cisco Outdoor Mesh architecture overview 2.4 GHz Access L3/L2 switch RAP MAP (Root AP) Backhaul 5GHz (Mesh AP) L2 switch Controller 5 GHz Access Backhaul 5GHz WGB Wired access MAP 5 GHz AccessMesh Deployment Flexibility: LAN-to-LAN connectivity Multiple hop backhaul 2.4 GHz and 5GHz wireless client access Ethernet Access to wired clients LAN-to-LAN in motion with Work Group Bridge (WGB)13
  14. 14. Cisco Outdoor Mesh architecture overview Autoconfiguración y autoadaptación Optimal parent selection selects the Neighbor RAP Controller path “ease” across each available Parent backhaul MAP Ease based on number of hops and link SNR (Signal Noise Ratio) AWPP uses a “Parent Stickiness” value to mitigate Route Flaps AWPP integrates 802.11h DFS (Dynamic Frequency Selection) for radar detection and avoidance From release 7.0.116 preferred parent can be configured Adaptive Wireless Path Protocol (AWPP) Establece el mejor camino hacia Root 14
  15. 15. Componentes de la Arquitectura Wireless Outdoor de Cisco • Access Points: Context Aware  802.11abgn Advanced  CleanAIr, ClientLink, etc. Wireless IPS  Outdoor enclosure, AC/DC power; PoE CleanAIr – Spectrum capable. Battery backup Intelligence WLAN Controller (WLC)  POE port for peripheral devices NetworkControl System (NCS) • Wireless LAN Controller (WLC): Indoor Hotspot  Handles RF algorithms and optimization Root AP IP (RAP) Backhaul  Seamless WiFi L3 mobility  Provides security at each Layer Mobility Service Engine (MSE)  Image and configuration Management Mesh • Prime NCS Metro Wi-Fi Network Mesht AP  Network-wide policy configuration and (MAP) device management  Design and deployment tools  Monitoring and troubleshooting • Mobility Service Engine (MSE) Client  Enables Mobility services (WIPS, Context Stadium / Large Venue aware) Residential CPE 15
  16. 16. APs Cisco Serie 1550 Características Beneficios• Outdoor 802.11n Access Point • RF Excellence: better coverage,• Dual-Radio APs (2.4 & 5 GHz) Integrated spectrum intelligence• CleanAir & ClientLink (beamforming) • Unified Mode: Authentication,  Dual-band Antennas Security, Mobility,..• Integrated; Low-Profile • Flexible Deployment: Access or• Backhaul mesh network, extension of an  DOCSIS 3.0 / EuroDOCSIS 3.0 Ethernet network, Fiber,  Fiber Wireless or Cable backhaul  Ethernet • High Performance: Multipurpose  Mesh network with low CAPEX & OPEX16
  17. 17. Características de 802.11n Packet Backward MIMO 40MHz Channels Aggregation Compatibility MIMO (Multiple Input, Multiple Output) With Beam Forming Transmissions Arrive in Phase, Increasing Signal Strength Without Beam Forming Transmissions Arrive out of Phase and signal is weaker Performed by Ensures Signal Increases Works with Transmitter Received in Receive non-MIMO (Talk Better) Phase Sensitivity Clients Beam Forming Maximal Ratio Combining Spatial Multiplexing17 Beam Forming gives a gain of 4+ dB in DL
  18. 18. Características de 802.11n Packet Backward MIMO 40MHz Channels Aggregation Compatibility MIMO (Multiple Input, Multiple Output) Without MRC With MRC Multiple Signals Sent; Multiple Signals Sent and Combined One Signal Chosen at the Receiver Increasing Fidelity MIMO AP Performance Performed by Combines Increases Works with Receiver Multiple Received Receive non-MIMO and (Hear Better) Signals Sensitivity MIMO Clients Beam Forming Maximal Ratio Combining Spatial Multiplexing MRC gives a gain of 4.7 dB in UL for all Data Rates18 MRC Gain is added in Rx Sensitivity number
  19. 19. Características de 802.11n Packet Backward MIMO 40MHz Channels Aggregation Compatibility MIMO (Multiple Input, Multiple Output) Information is Split and Transmitted on Multiple Streams stream 1 MIMO AP stream 2 Performance Transmitter and Concurrent Increases Requires MIMO Receiver Transmission on Bandwidth Client Participate Same Channel Beam Forming Maximal Ratio Combining Spatial Multiplexing19 AP1550 has the capability of 2 X 3 MIMO
  20. 20. MIMO + BeamformingMejoras para todos los clientes20
  21. 21. Tecnología CleanAir Monitoring, Locate Mitigate NCS, MSE Wireless LAN Controller POOR GOOD• Classification processed on Access Point Maintain Air Quality• Interference impact and data sent to WLC for real- time action• NCS and MSE store data for location, history, and Visualize and troubleshooting CH 1 CH 11 Troubleshoot AIR QUALITY PERFORMANCE Visibility of the Cisco CleanAir RF Spectrum 21
  22. 22. CleanAir: Visibilidad de la red Map – Air Quality View Zone of Impact Interferer DetailsContext Aware Services enable NCS to show Interferer’s location22
  23. 23. Planificación y Diseño23
  24. 24. Planificación y Diseño 180 meters (cell radius) at 2.4 Ghz MAP RAP MAP 1 square km, 10 Cells Recommendations  Assumptions:  Consider your weak link (client -  100% coverage needed smartphone)  APs are at 10 m; client at 1 m height  AP to AP distance = double AP to client  Data rate of 9 Mbps to estimate range AP1552C/I: 360 m  Throughput @ client >= 1 Mbps AP1552E/H: 360 m  LoS or Near LoS  Flat Terrain Environment  Decreasing AP to AP improves coverage 24
  25. 25. Planificación y DiseñoConsideraciones generales 1 km • In real world scenario you need to take in consideration obstacles; add more MAP APs to have Line of Sight (LOS) RAP • At 2.4Ghz MAPs’ distance is given by the coverage you want for clients • Client type (smart phones, tablets, etc): weakest link typically would be the Uplink on a smart phone • The number of MAPs per RAP should be less than 32 but really depends on the application and bandwidth you want! • Max hop count is 8. Four hops recommended..again throughput!25
  26. 26. Planificación y DiseñoLatencia y Throutghput Típico en el Backhaul Avg 2-3 msec latency per hops HOPS RAP One Two Three Four MAX Throughput 112 Mbps 83 Mbps 41 Mbps 25 Mbps 15 Mbps (20MHz BH) MAX Throughput 206 Mbps 111 Mbps 94 Mbps 49 Mbps 35 Mbps (40MHz BH) Numbers are average of US and DS  Latency: 10 ms per Hop, 0.3-1 milliseconds typical  Hops: Outdoor: code supports 8 Hops; 3–4 Hops are recommended  Nodes: 20 MAPs per RAP are recommended26
  27. 27. Planificación y DiseñoSectorización (Bridge Group)3 Hops 2 Hops  Logically groups APs and controls the association of the radios 1 Hop  For adding capacity we recommend that you have more than one RAP in the same sector, with the same BGN, but on different channels  Having multiple RAPs with same BGN in an area is good for redundancy: when a RAP goes down its MAPs will join a different sector with same name RAP  A factory default BGN is empty (NULL VALUE). It allows the MAP to do the first association MAP MAP 27
  28. 28. Implementación y relevamiento Equipment Inside28
  29. 29. Gracias!29