1. WiMAX range and throughput measurement setup at BBN Technologies, Cambridge, MA
NEC base station:
Operation at 2590MHz
Antennas approximately 90 ft above ground
NEC 120-degree sector antenna: tilt -10deg, -6deg, …
Omni-directional antenna
Anritsu spectrum analyzer
Parameters for WiMAX measurements?
Good for evaluating path loss
Linux laptop with Intel 6250 WiMAX modem as mobile station (MS):
Internal 6250 with internal antenna
External (USB-connected) 6250 with omni antenna
Evaluate connection between MS to server in testbed network, using script in MS, and measurements from BTS: RSSI; ping packet loss; iperf RT throughput

2. Neighborhood of BBN Technologies, Cambridge, MA

3. Photo of BBN base station and Concord Ave measurement points 41 - 48
(0 mi,
90 ft up)
BBN
Base
Station
Antenna 41
(0.058 mi)
Center Parking Lot 42
(0.085 mi)
Social Security
Entrance 43
(0.090 mi) NE
Fawcett-
Concord 44
(0.097 mi) SE 45
(0.153 mi)
T (Bus)
Stop 46
(0.200 mi) S
Wheeler- 47
(0.221 mi)
West edge
rotary 48
(0.254 mi)
East edge
BBN
Base
Station 41 42 43 44 45 46 47 48

4. Evaluation of connection between mobile station and BBN base station
(MS)
Base Station
(BTS)
.bbn.dataplane.geni.net
public
Internet
BTS
ODU/IDU
ASNGWsalamis
GREtunnel
WiMAX modem
“argos” test host
Servers
internal Intel 6250
USB-connected Intel 6250
Logmon
GEO netmon
Servers
Range/throughput experiment script
ping
iperf
ftpsrv
httpsrv
VLC video
Ekiga VoIP
Scan/connect
RSSI
Ping
iperf
download file
HTTP web interface
Video
VoIP