1 / 24

In-Building wireless, Going from Assumptions to Fact

In-Building wireless, Going from Assumptions to Fact. About PCTEL. Markets. Solutions. Our Capabilities. High Performance Application Specific Antennas & Accessories Custom Wireless Interconnect Solutions Scanning Receivers for RF Networks

brenna
Download Presentation

In-Building wireless, Going from Assumptions to Fact

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. In-Building wireless, Going from Assumptions to Fact

  2. About PCTEL Markets Solutions Our Capabilities • High Performance Application Specific Antennas & Accessories • Custom Wireless Interconnect Solutions • Scanning Receivers for RF Networks • Interference Management Systems • Manufacturing Locations in the USA and Asia • Top of the Line Stargate 24 Anechoic Antenna Test Chambers • The Latest in Electrical Simulation and Mechanical Design Software Tools • In-house Environmental Test Facilities • Wireless Planning and Installation Expertise

  3. About PCTEL In-Building Antennas Antennas & Accessories for Optimized Indoor Coverage • Frequency Options (900MHz-6GHz) • 6-Port and 3-Port MIMO Designs for Spatial Diversity Applications • Single Band, Wideband and Multi-Band Models • Ceiling, Wall and Surface Mount Designs • UL 94-V0 Materials and Plenum Cables • Attractive Low Profile Housings • Customized Cable Assemblies • NEMA-rated Insulated Enclosures

  4. The Journey Image we’re all going on a journey today. It’s the journey from assumptions to facts. At the beginning of the journey most of what we have to work with are assumptions At the end, through discovery (sometimes painful) we have known hard facts

  5. Scenario Through the contacts in your community you find yourself working with a electrical contractor that has the contract to do all electrical work in a new high rise office, hospital, parking garage or school. And building code requires a public safety repeater system.

  6. The Journey Begins Could be a site walk (be sure to bring your hardhat) Usually it’s just plans (after all, the building is only a hole in the ground at this time or perhaps only conceptual)

  7. What we do know • Floor plans • Frequency band or actual frequencies • If VHF/UHF we must have actual frequencies • Donor Signal Strength • If we don’t have this we’re really just guessing • Building Code Requirements

  8. What we don’t know • Fire wall locations and type • Riser locations • Must infer from the floor plans • Interior/exterior wall materials • Floor deck construction • Stair well construction/materials • What is above the suspended ceiling • Existing ambient signal from outside

  9. What we don’t know, cont. • Availability of cable mounting • Cabling requirements • Location of BDA • Cable routing to donor antenna/roof penetration • HVAC routing • Firewall penetration locations • Power availability

  10. There’s a lot we don’t know • So we make assumptions and bid the project • Then we wait, and wait some more. Often these take many months, not always • Then we hear we got the job and it’s time to start planning. Now we have the opportunity to start turning those assumptions that we bid on into facts

  11. First Steps • Review original design, compare with actual building • Check outdoor ambient signal inside • Confirm cable routing • Confirm donor antenna location and donor cable routing • Measure donor RSSI and azimuth • Confirm BDA location • Review changes with designer

  12. Do your paperwork • Is building permit required? • Do the plans require a PE stamp? • File plans with Fire Marshall/AHJ • Check cable fire rating requirements • This is where it’s handy to have a set of construction plans. Something the installer can follow that shows cable routing and component part numbers

  13. Installation tips • Keep cable reels small, 600-1000 ft • Make up a cart that can hold the reels and allow you to navigate hallways • Use cable prep tools to make the connector install quick and consistent • Follow the plans, especially couplers • If you have to deviate, compare with designer

  14. Anritsu E-Series Spectrum Master™, Cell Master ™, and Site Master ™ Spectrum Master Cell Master Site Master ™ Indoor Mapping The Anritsu E-Series Spectrum Master™, Cell Master™, and Site Master™ models are powerful battery operated instruments that can support a wide range of signal types. With the addition of option 431, Coverage Mapping users can easily make measurements and create detailed maps and reports of indoor coverage. This option supports both indoor and outdoor mapping needs. Both indoor and outdoor mapping features are particularly helpful for contractors, RF engineers, operators, public safety technicians and LMR personnel seeking to locate signal strength and coverage holes in “real-world” environments. By sampling received measurements from discreet locations, troubleshooting can be streamlined while network planning optimized. Learn more at www.anritsu.com

  15. CW Test First • Test everything • Connect signal generator to DAS input with level at calculated per channel power from BDA • At each antenna check signal level with analyzer • Eg… at 8ft @800Mhz free space loss is 38.6dB • If projected output at each antenna is -10dBm, should be seeing -48.6 on spec-an, give or take a couple dB • Walk to farthest, most shielded locations and check signal strength to make sure you have at least -95, generally the stairwells

  16. Commissioning and live signal test • Commission the BDA using manufacturers procedure • Be sure to filter out unwanted signals • Test the worst areas to verify before calling for inspection • Inspector usually does the 20 grid test • Only one can fail and that gives you 95% coverage • They can stand anywhere within that grid space

  17. Typical PS Code Requirements • Signal of -95 or better in at least 95% of the building • 100% coverage in areas determined by the fire department to be critical areas • Battery backup • 4, 8, 12 or even 24 hours • NEMA 4 rating in some localities • Amplifier failure alarms • Code does vary by municipality

  18. Critical Areas Defined • Exit Pathways • Stairwells • Usually the target we design to • Lobbies • Areas of public gathering in an emergency • Code compliance drawings shows this info • Fire and Pump Control Rooms • Where ever the fire inspector wants

  19. Cellular DAS? • Maybe best to partner with experienced VAR • Requires carrier coordination • Signal level (RSSI) is not the only measurement of quality

  20. CELLMAX-O-CPUSE Omni directional CELLMAX-D-CPUSE Directional Passive Components • 50Ω ½” Coax • N-Type Connectors • Plenum – Corrugated + Positive Stop • LSZH – Smooth wall + EZFit • RF Splitters/Combiners • Directional couplers / Taps • Antennas • Indoor and Outdoor Typical Coverage – 1400-1850 m2 (15K-20K ft2)

  21. What is Important for an In-Building Cable?

  22. Tools of the Industry • Extends coverage indoors • BDAs are basic amplifiers and filters • Repeaters demod-remod the signal BDAs and Repeaters • Cellular operators only • Single carrier solution • Does not scale well • Difficult to manage many devices Pico/Femto Cells • Can be configured to add capacity and coverage • Highly Scalable to large buildings and campuses Active DAS 22

  23. Our Toolbox Type – Repeater/BDA Uses – Medium office, manufacturing, 50k-150k sq ft Frequency bands – Cell, PCS, iDen, AWS, LTE, public safety > 700Mhz Cellular Specialties Axell, Andrew Type – Fiber DAS & Cat5 DAS Uses – Large office, hospitals, stadiums, arenas, airports, convention centers, hotels > 100k sq ft Frequency bands – 136 Mhz to 6 Ghz MobileAccess & Zinwave Type – Passive DAS components, optical fiber Uses – passive components to augment all types of in-building deployments CSI, Andrew, Microlabs & more 23

  24. Designs • Watch for upcoming webinar on how to do your own designs • For design assistance contact your account rep. They can put you in touch with me or one of our design team. 24

More Related