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Changes between Initial Version and Version 1 of WiMAX/30/02

May 5, 2011, 2:37:34 PM (10 years ago)


  • WiMAX/30/02

    v1 v1  
     1= A guide to wimax measurement application: wimax_gps_oml2 =
     2== Description ==
     3Collects Wimax radio link parameters with corresponding GPS coordinates and sends to OML server.
     4The following parameters are recorded and sent to the OML server: Center frequency, RSSI, CINR, Transmit power, Time from GPS, Latidute, Longitude, Altitude.
     6== Software Requirements ==
     71. ''wimaxcu'' : Wimax radio utility. Must be installed on machine to operate wimax radio.
     92. ''oml2-server'': OML measurement collection server. Note: this server may be locally installed on the mobile.
     113. ''gpsd'': GPS service daemon running locally. Information on ''gpsd'' can be found on
     134. ''wimax_gps_oml2'': Wimax measurement application.
     15== Hardware Requirements ==
     161. ''GPS receiver'': for example a Garmin USB Receiver -  model#: GPS18x-5Hz. Other compatible GPS models can be found on
     18== Installation / setup procedures ==
     191. Edit the '''/etc/apt/sources.list''' and add the following line:
     21deb jaunty main
     22deb maverick/
     252. Update information based on the changed sources.list.
     27sudo apt-get update
     303. Install the wimaxcu utility if not already installed, then reboot the machine
     32sudo apt-get install wimaxcu-1.0
     364. Run the following commands to start wimax daemon service, and operate wimax radio
     38wimaxd -i wmx0 -b
     40wimaxcu ron
     41wimaxcu scan
     42wimaxcu connect network 51
     455. Install the Wimax measurement application (wimax_gps_oml2) and the GPS Daemon (gpsd)
     47sudo apt-get install wimax-gps-oml2
     506. If measurements are to be collected locally install the oml2-server otherwise this step may be skipped.
     52sudo apt-get install oml2-server
     557. Attach GPS receiver to mobile. At this point please refer to and verify that GPS is able to send data and also able to talk to ''gpsd''.
     58== Usage ==
     591. Refer to and verify the GPS receiver is able to send data and also able to talk to ''gpsd''.
     612. Verify ''oml2-server'' is running
     63ps -elf | grep oml2-server
     66If needed restart oml2-server:
     68/etc/init.d/oml2-server restart
     713. Verify ''gpsd'' is running
     73ps -elf | grep gpsd
     76If needed restart gpsd. Note: /dev/tty* name may be different. Refer to gpsd troubleshooting to find correct /dev/tty* name. This will start gpsd as a daemon.
     78gpsd /var/run.gpsd.sock /dev/ttyUSB0
     814. Run ''wimax_gps_oml2'' collection application.
     83./wimax_gps_oml2 --oml-id 4 --oml-exp-id exp4 --oml-server localhost:3003
     85This will create an sqlite database file (exp4.sq3) on the oml server.
     87== Troubleshooting GPS Service Daemon ==
     88Please refer to troubleshooting ''gpsd'' please refer to
     90== Sample data ==
     91Here's a snapshot of drive data collected around the Wimax BS at Rugters Winlab. This is the RSSI drive data.
     95The following is the CINR drive data.
     100== Post processing data ==
     101After the application is run, it'll create an sql file on the oml server. Processing this file to extract the measured data can be done in several ways. The steps outlined here can be used to generate the image shown above.
     1031. Process the sql file into delimited ascii text.
     105sqlite3 exp4.sq3 "select * from wimax_measurements;" > exp4.dat
     1082. Extract the rssi field from delimited ascii text file. This was done via awk script: [ rssi.awk]
     110awk -f rssi.awk exp4.dat > exp4_rssi.dat
     1133. Use [ gpsvisualizer] to plot exp4_rssi.dat.
     115 * Under ''Upload your GPS data files'' for ''File #1'' select exp4_rssi.dat.
     116 * Under ''Track options'' for ''Colorize by'' select ''custom field'' from the pull down. Once the ''Custom colorization field'' appears enter ''rssi''.
     117 * Finally click ''Draw the map''