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Clemson University WiMAX Activities Update for the AATG

9/7/2007

J. Martin, M. WestallSchool of Computing Clemson University

jim.martin/westall@cs.clemson.edu

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M/A-COM Equipment Airlink:

IEEE 802.16e function – although just supports Fixed/Nomadic clients

5MHz channels at 4.9GHz OFDM 256 FFT 27dBm output power TDD operation, 10ms frame time, variable US/DS split Supported modulation methods: BPSK (1/2, 3/4), 16

QAM(1/2,3/4), 64QAM(1/2,3/4) Interfaces:

RJ-45 Ethernet 24 V DC Power 4.9 GHz RF and GPS Antenna

Managed by M/A-COM UAS Admin software

M/A-COM Base Station

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Testbed: Lab Network

Wireless channelBase Station192.168.90.252

130.127.49.x 192.168.90.254Internet GatewayNTD, DHCP

192.168.90.1UAS laptop

Linux host192.168.90.12

Subscriber Station192.168.90.251

Linux host192.168.90.11Linux host

192.168.90.10TCP source/Siink

100/1000Switch 100/1000

Switch

100/1000Switch

Linux host192.168.90.13

192.168.90.x

Subscriber Station192.168.90.251

Linux host192.168.90.1xVoIP/Video source/Siink

ClemsonNetwork130.127/16

Window hostIndigo Video Mgt Software

Linux Host“CommandCenter”

Private net - putlic net NAT translationPublic net - private net reverse NAT map: 130.127.x.x to 192.168.90.x 130.127.x.x to 192.168.90.x

Campus Deployment

Validation Test 1DS modulation

US modulation

US/DS throughput(single flow)

Rss at the SS

64QAM 2/3(capacity: 15.36Mbps)

64QAM 2/3 UDP:US:4.8MbpsDS:4.8Mbps

16QAM1/2(capacity: 7.68Mbps

16QAM1/2

64QAM2/3 16QAM1/2 TCPUS: 2 MbpsDS: 4.3 Mbps

64QAM3/4 16QAM1/2

64QAM3/4 QPSK1/2

64QAM3/4 BPSK1/2

WiMAXNetwork

Linux host192.168.90.11

Linux host192.168.90.254

Validation Test 2

WiMAXNetwork

Linux host192.168.90.11

Linux host192.168.90.254

•192.168.90.254 sends 210 bytes every 15 ms•Obtain a trace

•1: packets sent by 254•2:packets received by 11•3:packets sent by 11•4:packets received by 254

•Obtain the PDF of interpacket departure and arrival times•Provides a visualization of the dynamics of WiMAX

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Validation test 2

0 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

PD

F

Values 0 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.1

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

PD

F

Values

0 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

PD

F

Values 0 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

PD

F

Values

1. At 254 - sender 2. At 11 -receiving

3. At 11 – sending the echo 4. At 254 – receiving the echo

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Validation Applications

TCP/UDP network performance test tools VoIP using Asterisk Video streaming

IndigoVision surveillance camera Plan to order high end, rugged Pelco analog PTZ

camera (SpectraIV) with IndigoVision 9000E Encoder (with analytics and video mgt software)

Camcorder Web Cams