C o m m i ssion ing M anu al
E val u at i n g L i n k Q u al i t y
28.5. Generating Traffic to Measure Throughput
For measuring BER, RSSI (at the BSR), and throughput, you need to generate a
flood of traffic between the BSR and SPR. The following methods can be
implemented to generate traffic:
Iperf program:
You can use a third-party free firmware program such as
Iperf
(free download at
http://dast.nlanr.net/Projects/Iperf/
), which generates a flood of UDP packets to
measure throughput. Using this program, a simple batch file can be made for the
client side (behind the SPR) and for the Base Station side (behind the BSR) to
ease the throughput measurement procedure.
FTP:
An FTP session can be used to generate TCP packets to measure throughput.
Connect a PC to the SPR/IDR and run three to four simultaneous FTP sessions
to an FTP server that is physically connected to the BSR’s LAN port (e.g.
Microsoft IIS, and Linux FTP built-in servers). The few concurrent sessions
eliminate the Slow Start phenomenon (succinct explanation can be found in RFC
#2001). During the test, record the RSSI and BER levels for the BSR and
SPR/IDR. This information is useful to Airspan’s technical support team for
future diagnosis.
01040311-07
Airspan Networks Inc.
28-13
