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Changes between Version 6 and Version 7 of WiMAX/30/05


Ignore:
Timestamp:
Feb 9, 2012, 5:44:21 PM (9 years ago)
Author:
Nilanjan Paul
Comment:

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  • WiMAX/30/05

    v6 v7  
    44This experiment runs oml2-iperf on two nodes and collects bandwidth measurements along with the controlled attenuator values. The RSSI seen by the wimax node interface is varied by controlling this attenuator value. At different attenuator values we can measure the down link throughput for the wimax interface.
    55
    6 This experiment script is geared towards nodes on sand box 4 which has nodes with wireless interfaces connected the base station via an rf attenuator matrix.
     6This experiment script is geared towards nodes on sand box 4 which has nodes with wireless interfaces connected the base station via an rf attenuator matrix. Using this experiment we also measure the throughout at different modulation-coding schemes (MCS) which is set prior to running the experiment script. For detail on changing MCS please refer to http://wimax.orbit-lab.org/wiki/WiMAX/17/13ainfo#BasicSupportServices
    77
    88== Hardware utilized ==
     
    11113. ''RF-attenuator matrix'': this used by the script to attenuate the air interface between the wimax base station and node.
    1212
    13 == Software requirements worth mentioning ==
     13== Software / scripts requirements worth mentioning ==
    14141. ''baseline-iperf.ndz'': disk image that's loaded onto the nodes. This image is loaded with oml2-iperf.[[BR]]
    15 2. ''oml2-server'': this is a server running on sandbox 4 which collects measurement data from oml2-iperf.[[BR]]
     152. ''oml2-server'': server running on sandbox 4 which collects measurement data from oml2-iperf and stores in a database file.[[BR]]
     163. ''sqlite3'': command line interface for accessing the contents in a database file.
     174. ''wimax-iperf-attn.rb'': the experiment script
    1618
    1719== Set up ==
     
    120122* Query the status of the nodes until node1-4 & node1-9 are in ''POWERON'' state: '''omf-5.2 stat'''
    121123
    122 * Now run the experiment script: '''omf-5.2 exec dl-iperf.rb'''
     124* Now run the experiment script: '''omf-5.2 exec wimax-iperf-attn.rb'''
    123125
    124126* After the experiment successfully runs, a database file, ''values.db'', is created. This file is populated with the following parameters for each iperf run:[[BR]]
    125  1. rf matrix attenuation value
    126  2. number of '''bytes''' transferred from iperf client to server.
    127  3. total time taken for iperf connection.
    128  4. throughput in kilobytes per second
     127 1. atten -----> rf matrix attenuation value
     128 2. nBytes ----> number of '''bytes''' transferred from iperf client to server.
     129 3. time ------> total time taken for iperf connection.
     130 4. kBperS ----> throughput in kilobytes per second
     131
    129132
    130133== Post process data ==
    131134
     135
     136
    132137== Trouble shooting & miscellaneous info ==