doesn't have a Qcheck/Chariot endpoint for WinCE, we can't use
those tools to check out wireless performance. Instead we've
had to use the more limited tool set that is available for WinCE/PocketPC
Here's a diagram of the test setup:
"Beige box" Celeron 300A,
"Compaq 5451, AMD K-6 500MHz,
Compaq 1650 (Pentium 266), 64MB,
SMC2655W (Chosen because
it has no throughput degradation with WEP enabled and strong
signal vs. distance performance.)
All tests are run at four different locations or
Condition #1: AP and wireless client
in same room, approximately 10 feet apart.
Condition #2: Client in upper floor room
directly above AP, approximately 15 feet apart. No metal
ductwork between AP and client.
Condition #3: Client on same floor as
AP but in another room approximately 50 feet away. Walls,
but no metal ductwork between the client and AP antennas.
Condition #4: Client on upper floor at
opposite end of residence, approximately 55 feet away.
Walls, floor, and probable metal ductwork between AP and client.
What We Test
We use the Ping utility that's part of Cambridge
Computer Corporation's free vxUtil package. 10
pings are done and the average and maximum ping times recorded.
TCP Transfer Rate (Throughput)
We use Cambridge
Computer Corporation's vxFTP FTP Client ($25 after free
30 day evaluation). We download an approximately 1MB file
from a PC on the Ethernet LAN that's running 3Com's
free 3CDaemon as an FTP server multiple times and record
the time and transfer rate reported by vxFTP for each download.
The reported Kbytes/second is converted to Mbits/second as follows:
Transfer rate (Mbits/sec)=
(Transfer rate in Kbytes x 8) / 1024
This test is usually run both with and without WEP enabled
to check for WEP speed degradation.
vxFTP rounds transfer times to the nearest
We suspect that the Transfer Rate method may
be under-reporting the actual maximum Transfer Rate. Let
us know if you have other suggestions for performing