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
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
Residence Halls
Determined by RF Survey
Surveyed 65 Buildings
Installed in 7 Buildings
Bigger Carrot, Bid for Preferred Carrier for Mobile Communications

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

7. Typical Remote Carrier Site
CARRIER EQUIPMENT
# OF SECTORS DETERMINED BY E-911 REQUIREMENTS AND CAPACITY CALCS
ATT – PER BLDG
SPRINT – iDen and PCS CDMA – 2 Sectors – North and South
T-Mobile – 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)
Jacobs Consolidation Head End
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. MA2000 Link Budget Calculations- Cell / PCS Frequency 860 935 1930.0
880
1930
MHz
Technology/# Channels
IDEN/12
SMR/12
CDMA/6
TDMA/8
GSM/8
UMTS/1
Protocol
MRC/AP Output
-1.00
12.50
0.00
6.00
12.00
5.50
9.50
dBm
X-Way Splitter/combiner Losses (if appl.)
-3.5 dB
Wireless Lan Module (MA850)
0.0
1/2-inch Cable Length (ft)
200.0
ft.
1/2-inch Cable Loss (dB)
-5.0
-7.6
Antenna Gain (dBi)
2.0
3.0
dBi
MRC Antenna Output
-7.5
4.4
-6.5
-2.1
3.9
-1.0
1.4
Distance (Radius)
45.0
Path Loss
53.9
54.6
60.9
54.1
Body Loss
-2.0
Wall/Clutter Loss
-10.0
-12.0
Fade Margin
RSSI Level
-78.0
-79.0
-76.0
-82.0
-72.0
75% Loading (CDMA only) -
-84.0
-85.0
Ant Area Covered InBuilding
4,455
Sq.ft.

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