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Since netIQ 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 devices.

Here's a diagram of the test setup:

Wireless Testing Setup

Equipment Details:

  • Ethernet Client: 
         "Beige box" Celeron 300A, 128MB, Win98
                                              or
         "Compaq 5451, AMD K-6 500MHz, 92MB, Win98SE

  • Wireless Client: 
         Compaq 1650 (Pentium 266), 64MB, Win98SE

  • Access Point:
    SMC2655W (Chosen because it has no throughput degradation with WEP enabled and strong signal vs. distance performance.)

 

 

How we Test

All tests are run at four different locations or test sites:

  • 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

TCP Response 

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.


NOTES

  • vxFTP rounds transfer times to the nearest second

  • 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 this test.



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