我们怎样测试无线袖珍PC客户端

无题

How We Test - Wireless PocketPC Clients

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.

因为netlQ没有一个可运行在WinCE上的Qcheck/Chariot软件，我们不能使用这些工具来检验无线网络的表现。我们不得不改为使用可在WinCE/袖珍PC上运行的更有限的工具。

Here's a diagram of the test setup:

如下为一个测试设置框图：



Equipment Details:

设备详细资料：

·  Ethernet Client:

·  以太网客户端
     "Beige box" Celeron 300A, 128MB, Win98
                                          or
     "Compaq 5451, AMD K-6 500MHz, 92MB, Win98SE

·         Wireless Client:

·         无线客户端
     Compaq 1650 (Pentium 266), 64MB, Win98SE

·         Access Point:

·         无线接入点
SMC2655W (Chosen because it has no throughput degradation with WEP enabled and strong signal vs. distance performance.)

选择SMC2655W是因为它在WEP启用时没有吞吐量降级，和长距离时信号较强的性能。

How we Test

我们怎样测试

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

所有测试在4个不同地点或测试站进行：

·         Condition #1: AP and wireless client in same room, approximately 10 feet apart.

·         条件＃1：接入点和无线客户端在同一房间，大约分开10英尺。

·         Condition #2: Client in upper floor room directly above AP, approximately 15 feet apart.  No metal ductwork between AP and client.

·         条件＃2：无线客户端在接入点楼上正上方，大约分开15英尺，在接入点和客户端之间没有金属管道系统。

·         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.

·         条件＃3：无线客户端和接入点在同一层楼但在大约50英尺以外的另一房间，隔墙但在接入点和客户端之间没有金属管道系统。

·         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.

·         条件＃4：无线客户端在接入点楼上住房相对尽头，在大约55英尺以外，隔墙、地板，在接入点和客户端之间可能有金属管道系统。

What we Test

我们测试什么


TCP Response  

传输控制协议响应

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.

我们使用剑桥计算机公司的免费vxUtil软件包中的Ping命令。执行10次Ping，记录平均和最大的Ping时间。

TCP Transfer Rate (Throughput)  

传输控制协议传递速率（吞吐量）

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:

我们使用剑桥计算机公司的vxFTP软件的FTP客户端（免费30天评估后25美金）。我们多次从运行3Com公司免费3Cdaemon软件做FTP服务器的以太网上一台PC机上下载一个大约1MB的文件，记录每次vxFTP报告的时间和传输率。报告中的千字节/秒按下述方法转换成兆比特/秒。

Transfer rate (Mbits/sec)=
(Transfer rate in Kbytes x 8) / 1024

传输率（兆比特/秒）＝

（以千字节为单位的传输率×8）/1024

This test is usually run both with and without WEP enabled to check for WEP speed degradation.

此测试通常在WEP启用或不启用时各进行一次，以检测WEP速度降级。


NOTES

注意

·   vxFTP rounds transfer times to the nearest second

·   vxFTP运行传输时间近似到秒

·   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.

·   我们怀疑传输率方法可能在报告的实际最大传输率之下。如果你有进行这项测试的其他建议，请告诉我们。

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