Sponsored by the National Science Foundation1 The Poly WiMAX deployment The BS (server, IDU) have...
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Transcript of Sponsored by the National Science Foundation1 The Poly WiMAX deployment The BS (server, IDU) have...
Sponsored by the National Science Foundation 1
The Poly WiMAX deployment
• The BS (server, IDU) have been installed in the network room of the Library in the ECE Dept Building (5 Metrotech Center)
• The outdoor parts (sector antenna, GPS antenna, ODU) have been installed on the roof of the ECE Dept Building (5 floor building)
• We have got 2 experimental licenses from FCC to operate the WiMAX BS for 2 years
Sponsored by the National Science Foundation 2
Current Status
• The testbed is up and running since September 2010 in a regular basis
• WiMax connectivity on the nodes is tested using different devices such as Wimax Dongle, HTC EVO phones and Wimax laptops
• The signal levels are tested (RSSI and SINR) to map the coverage area around the campus
• Extensive throughput and delay measurements underway
• Video conferencing is tested using the HTC EVO 4G phones.
Sponsored by the National Science Foundation 3
Base Station Installation
• Sector antenna and GPS antenna installation
Sponsored by the National Science Foundation 4
Base Station Installation
• ODU installation
Sponsored by the National Science Foundation 5
Server Installation
• Server installation
Sponsored by the National Science Foundation 6
Clients
Beceem USB clients (Windows) HTC EVO phones
Dell Inspiron Mini 1012 (Linux) Intel Centrino Advanced-N 6250
Sponsored by the National Science Foundation 7
Base Station Installation
• Poly’s location (Downtown Brooklyn)
Sponsored by the National Science Foundation 8
Measurements
• Coverage range (20dBm)
Sponsored by the National Science Foundation 9
Measurements
• Coverage range (3dBm)
Sponsored by the National Science Foundation
Dell Netbook 1012Linux 10.0.4Intel6250 CentrinoInternal antenna
Test Host
Public Internet
Base Station
NYU-Poly
NECWiMAXBS
GRE Tunnel
11
22
33
• Indoors and outdoors measurements on throughput and delay (iperf)
• Many variations in urban area• Throughput from 0.5 to 12Mbps• Asymmetry on the uplink and
downlink
Measurements
Sponsored by the National Science Foundation 11
Experiment 1
WiMAX broadcasting
WiMAX
WiMAX
WiMAX
WiMAX
Communication from the WiMAX interface
Devices may experience data losses due to heterogeneous wireless channel conditions
• Implementation of a WiMAX/WiFi cooperative recovery protocol– .
Sponsored by the National Science Foundation 1212
Experiment 1
Transmitter
Video Client 1
Video Client 2
Recovery Node
wimax
wimax
wimax
wifi
wifiWiMAXbroadcatsing
TCP
Distortion Producer
CoopCluster
Communication from the WiFi interface
Devices run a Cooperative Recovery protocol to dynamically form a cooperative recovery (ad hoc) network and recover the lost multicast data packets from other peers
Sponsored by the National Science Foundation 13
• Development of a campus based power meter infrastructure based on the WiMAX deployment
• Current solutions use Zigbee and USB connections, very low range
Experiment 2ZigBee
30-40 feet
USB
ZigBee30-40 feet
Internet
Sponsored by the National Science Foundation 14
• The data collected in the cloud can then be seen on a web browser or a smartphone.
Experiment 2
Sponsored by the National Science Foundation 15
• Use of the WiMAX deployment for transmitting the measuring data from the measuring points to the internet
Experiment 2ZigBee
30-40 feet
WiMAX
ZigBee30-40 feet
Internet