Wireless Mesh for OSP, Presented by Firetide at OSP Expo
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This document discusses the advantages of wireless mesh systems for outdoor surveillance projects. It reviews different wireless options and considerations for high-performance wireless networks. Wireless mesh networks can deploy virtually anywhere, extend wired infrastructure, and provide redundancy. However, they require more expertise than point-to-point or point-to-multipoint systems. The document examines wireless frequencies, topologies, throughput capabilities, security aspects, and best practices for planning and deploying a successful wireless mesh network for video surveillance and other applications.
Wireless Mesh for OSP, Presented by Firetide at OSP Expo
- 1. To Mesh or Not to Mesh for OSP? Advantages of Wireless Mesh Systems for OSP Environments Mike Intag, RCDD, Firetide 1
- 2. Objectives Understand wireless options and their differentiators in OSP environments Discuss considerations for high-performance wireless networks Review mesh applications, design approaches and best practices 2
- 3. Why High-performance Wireless for OSP? Property protection/ Mobility of workers & Security of remote Vandalism prevention equipment areas / Access control 3
- 4. Why Wireless Infrastructure? Deploy virtually anywhere Portability and mobility Extend, back-up, or replace wired infrastructure Cost savings vs wire 4
- 5. Wireless Challenges Availability of channels & spectrum RF interference Dynamic RF & physical environment “Trust but verify” attitude required 5
- 6. Wireless Options 6
- 7. Wireless Frequency Bands Licensed • Controlled by the FCC or other regulatory agencies • Can be sold or made commercially available to operators Unlicensed • Unregulated frequencies with predefined rules for hardware to mitigate interference 7
- 8. Wireless Frequency Bands Licensed? Line of site Advantage Disadvantage 900 MHz Unlicensed Not required Improved street-level Lower throughput penetration for video compared to other bands 2.4 GHz Unlicensed Required Better penetration Interference from compared to 5 GHz consumer devices 4.9 GH Licensed Required Reserved for public Requires frequency safety; less coordination with interference other agencies 5 GHz Unlicensed Required Better range and less Lower penetration interference than 2.4 GHz compared to 2.4 GHz 8
- 9. Point to Point Pros Dedicated connection Highest bandwidth for backhaul Cons Does not scale; no flexibility Single point of failure 9
- 10. Point-to-Point Firetide Confidential 10
- 11. Point to Multi-Point Pros May be cost effective if tall assets are available; bandwidth requirements are low Cons Limited scalability: bandwidth divided by # of subscribers LOS required to each subscriber unit Base station creates a single point of failure 11
- 12. Point-to-Multi-point 12
- 13. Multi-Point to Multi-Point (Mesh) Pros Reach & scalability with multi-hop connections Flexibility – can be deployed a PtP, PtMP or mesh Cons Variable performance from different vendors More expertise required vs PtP or PtMP 13
- 14. Mesh & Point-to-Point 14
- 15. Why is Redundancy Important? Radio equipment is very reliable…. …but they are frequently installed on light poles which aren’t 15
- 16. Not All ‘Wireless Mesh’ Created Equal 16
- 17. Imagine a Traditional Wired Switch Most efficient mesh utilizes L2 distributed wireless switch architecture (Wired Ethernet infrastructure) 17
- 18. Now, Give Each Port Wireless Capability (Wired Ethernet infrastructure) 18
- 19. Separate the Ports… Bingo, a Virtual Ethernet Switch! (Wired Ethernet infrastructure) 19
- 20. Key Requirements Voice Video High-bandwidth data High call capacity High throughput Low latency Low jitter (variation in latency) Multicast support End-to-end QoS & traffic prioritization 20
- 21. Wireless: How Good Is It? 21
- 22. What About Throughput? Point to point Up to 1 Gig+ Point to multi-point WiMAX: 20-30 Mbps total capacity (divided by # of subscribers) MIMO-based PtMP systems: 100-125 Mbps Wireless mesh Up to 250-300 Mbps in PtP mode or 100-150 Mbps sustained over multiple hops Varies by vendor: from 10-15 Mbps to 100-150 Mbps per radio Numbers listed are usable throughput, not theoretical data rate 22
- 23. Is Wireless Secure? Standards-based Encapsulation w/ Firetide Mesh Routing Protocol Radio layer encryption AES WPA2 Encryption FIPS 140-2 certification Packet Packet Propitiatory Filtering Filtering Encapsulation Digital certificates & MAC filtering VLANs 23
- 24. Wi-Fi Access vs Mesh Wi-Fi for client access Useful for live video in Wi-Fi ‘hot spots’ • Laptops, PDAs • Local and remote viewing Wi-Fi enabled Radio, AP & Camera patrol car 24
- 25. Can I Use Low-cost Point-to-Point? Low-cost PtP has a cost advantage, but: Only for a few outlying cameras / 1 hop Disadvantages beyond that: No scalability Complex to manage More real estate required 25
- 26. Limitations of PtP & PtMP Systems Rigid architecture Does not allow multi-hop Requires towers / tall buildings No infrastructure mobility Require backhaul for each base station: high costs of deployments Quickly run out of usable spectrum Transition to MIMO 40 MHz channels creates challenges Urban canyons a challenge to PtP & PtMP 26
- 27. Key Technology Differentiators Customer Infrastructure Mesh AP PtP PtMP Benefit Mesh Scalability for video Security Infrastructure Mobility Backhaul Every 10-15 hops Every 2-3 hops Every link Every base station requirement Investment Indoor and outdoor, Indoor and outdoor, Outdoor only, complex Outdoor only, Protection multiple applications access point based, network management, complex network (data, video, voice) data support only no scalability management, limited scalability 27
- 28. Design Considerations 28
- 29. Nested PtMP Mesh Design 29
- 30. Linear Loop Mesh Design 30
- 31. Linear Mesh Design 10 hops in both directions Multi-application: VoIP, video, Wi-Fi data 31
- 32. Infrastructure Mesh Applications 32
- 33. Wireless-Enabled Campus 33
- 34. Industrial Sites 34
- 35. Smart Grid; Utility WAN 35
- 36. Wi-Fi Hotspots 36
- 37. Cellular Base Station Interconnect 37
- 38. Mesh & Mobility 38
- 39. Planning & Deployment 39
- 40. Mesh Best Practices Combination of topologies Multi-mesh interconnected by wired or wireless backhaul Partial, linear or circular mesh with redundant drop-off points Be aware of trade-offs between redundancy, cost and performance 40
- 41. Planning a Successful System Business objectives Future System growth requirements Deployment Site survey RF/Network design 41
- 42. Design With Flexibility in Mind 42
- 43. Prepare for a Variety of Conditions 43
- 44. Future Growth Make sure the network can scale Evaluate new applications Cameras technology: ALPR, infrared, HD, megapixel Other services: Wi-Fi access, VoIP Mobility: real-time mobile video 44
- 45. Questions? Mike Intag, Firetide mintag@firetide.com partners@firetide.com www.firetide.com Presentation is available on SlideShare; Search for: Firetide OSP 45