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In-Building Cellular @ Northwestern University

Implementing a carrier-neutral, full carrier participation cellular network at Northwestern University, including agreements separate from cell site agreements, electronics in closets, and no carrier recurring costs to NU. This project also explores the possibility of incorporating WiFi and 700MHz options.

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In-Building Cellular @ Northwestern University

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  1. In-Building Cellular @ Northwestern University October 28, 2008 Holly King Northwestern University

  2. Requirements • Carrier Neutral • Full Carrier Participation • Agreement Separate from Cell Site Agreements • Electronics in Closets • No Carrier Recurring Costs to NU • Possibility of Incorporating WiFi and 700Mhz

  3. Options (early 2006) • Outside Distributed Antenna • Didn’t work well for large buildings with low E glass • Found limited connections by Carriers • Off-Air Distributed Antenna • Didn’t scale well • Outside Antenna Requirements • Base Station Distributed Antenna • Closet vs. In Ceiling electronics • Positioned for 700Mhz • Could add WiFi

  4. Rollout with MobileAccess • Phase 1 - 2006 • Kellogg School of Management • Conference Center • Establish Carrier Agreements • Carrot with Northwestern providing MA Equipment and Fiber from the Cell Site

  5. Rollout with MobileAccess • Phase 2 - 2008 • Residence Halls • Determined by RF Survey • Surveyed 65 Buildings • Installed in 7 Buildings • Bigger Carrot, Bid for Preferred Carrier for Mobile Communications

  6. Englehart Ryan South Ryan North Tech North Tech South ATT – GSM – 9 Sectors MA 330 Fiber Link 2 per Building MA 330 Fiber Link 2 per Building MA 330 Fiber Link 2 per Building T-Mob – GSM – 9 Sectors MA 330 Fiber Link 2 per Building MA 330 Fiber Link 2 per Building MA 330 Fiber Link 2 per Building MA 330 Fiber Link 2 per Building MA 330 Links Per total above MA 330 Fiber Link 2 per Building US Cell - 1 Sector Sprint - 2 Sectors Verizon – 3 Sectors MA 330 Fiber Link One per sector MA 330 Fiber Link One per sector MA Base Units MA Base Units MA Base Units MA RIU / BTSC Per Sectorization MA Base Units MA Base Units MA Base Units MA Base Units MA Base Units MA 330 Fiber Link One per sector MA 330 Fiber Link One per sector MA 330 Fiber Link One per sector Allen Slivka Bobb McCullough Hinman Fairchild East Fairchild West Career Serv Kemper Fiber out to remote Hub Units in closets Fiber out to remote Hub Units in closets Fiber out to remote Hub Units in closets Fiber out to remote Hub Units in closets Fiber out to remote Hub Units in closets Fiber out to remote Hub Units in closets Fiber out to remote Hub Units in closets Fiber out to remote Hub Units in closets Jacobs – Consolidation Head End MA Base Units Fiber out to remote Hub Units in closets MA 330 Fiber Link 2 per Building

  7. Typical Remote Carrier Site CARRIER EQUIPMENT # OF SECTORS DETERMINED BY E-911 REQUIREMENTS AND CAPACITY CALCS ATT – GSM @ 1900 1 PER BLDG SPRINT – iDen and PCS CDMA – 2 Sectors – North and South T-Mobile – GSM @ 1900 1 per BLDG US Cellular – PCS CDMA 1 Sector Verizon Cell and PCS CDMA 3 Sectors Coax Runs (Carrier Provided) MA 330 – Optical Link Quantity varies per location based On 1 link per unique signal / sector (NU Provided) Single Mode Fiber with APC Connectors To Consolidation Head End One strand utilized per link (NU Provided)

  8. Jacobs Consolidation Head End Single Mode Fiber with APC Connectors From Remote Carrier Site One strand utilized per link (NU Provided) MA 330 Units Linked to Remote Carrier Sites MA RIU Interface Unit Multiple Signal are grouped Unit # 1 – iDEN SMR PCS Nextel / Sprint / US Cell Unit # 2 – Cell PCS PCS Ver Cell / Ver PCS ATT / T Mobile Combines RF inputs from one or more cellular networks & up to 3 separate frequency conditioners can be contained in one chassis MA 410 Monitoring MA 330 Units Linked to Target Buildings Single Mode Fiber with APC Connectors To Remote Target Building One strand utilized per link

  9. Typical Coverage Remote Building Single Mode Fiber with APC connectors 1 Strand required per link MA 330 Units Linked to Jacobs Consolidation Head End MA Base Units Single Mode Fiber with APC connectors 2 strands required per active module ½” Helilax out to antennas MA 2000 Remote Cabinet

  10. Lessons Learned • E911 Considerations • RF Survey • Fiber Plant • Helps to have a bid for preferred vendor for mobile communications • Troubleshooting Procedures

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