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Wi Fi RF Test Commands for Linux

:::info 文档信息

页数：21　·　语言：英文

原始文档：Wi-Fi RF Test Commands for Linux-v03.pdf

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Version information​

VersionDateAuthor
0.32018/06/02Terence Hsieh
0.12013/04/02Bart Lin

Continuous Modulation/Single-Tone Tx Configuration​

The following procedure describes how to analyze the 802.11a/b/g/n Tx Packet using IQview and WL commands.

Set up the IQview for Modulation/Single-Tone Tx​

Step1. Execute IQview.exe and the GUI shows below.

Set up the IQview for Modulation/Single-Tone Tx​

For IQMIMO (For analyze 802.11a/g/n mode) For IQsignal (For analyze 802.11a/b/g mode)

Set up Wi-Fi in your device for RF Test​

If Wi-Fi driver is built a kernel module(bcmdhd.ko): 1) Pull BT_REG_ON to Low 2) insmod /system/lib/modules/bcmdhd.ko iface_name=wlan0 firmware_path=/etc/firmware/fw_bcmdhd_mfg.bin nvram_path=/etc/firmware/nvram.txt 3) ifconfig wlan0 up 4) wl ver  Check firmware name and should include (WLTEST) string

If Wi-Fi driver is built in kernel 1) Pull BT_REG_ON to Low 2) echo /system/etc/firmware/fw_bcmdhd_mfg.bin > /sys/module/bcmdhd/parameters/firmware_path 3) ifconfig wlan0 up 4) wl ver  Check firmware name and should include (WLTEST) string

Continuous Modulation Tx – 802.11a​

Modulationnraterateset
BPSK66b
BPSK99b
QPSK1212b
QPSK1818b
16-QAM2424b
16-QAM3636b
64-QAM4848b
64-QAM5454b

wl down wl band a wl mpc 0 wl nrate -r 54 wl rateset 54b wl country ALL wl up wl channel 36 wl scansuppress 1 wl txpwr1 -1 wl pkteng_start 00:11:22:33:44:55 tx 100 1000 0 wl phy_forcecal 1

Bandchannel
5GHz Band 1(5150~5250)36, 40, 44, 48
5GHz Band 2(5250~5350)52, 56, 60, 64
5GHz Band 3(5475~5725)100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140, 144
5GHz Band 4(5725~5850)149, 153, 157, 161, 165

Continuous Modulation Tx – 802.11b​

Modulationnraterateset
DBPSK11b
DQPSK22b
DQPSK5.55.5b
DQPSK1111b

wl down wl band b wl mpc 0 wl nrate -r 11 wl rateset 11b wl country ALL wl up wl channel 1 wl scansuppress 1

Bandchannel
2.4GHz (2400~2483)1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13

wl txpwr1 -1 wl pkteng_start 00:11:22:33:44:55 tx 100 1000 0 wl phy_forcecal 1

Continuous Modulation Tx – 802.11g​

Modulationnraterateset
BPSK66b
BPSK99b
QPSK1212b
QPSK1818b
16-QAM2424b
16-QAM3636b
64-QAM4848b
64-QAM5454b

wl down wl band b wl mpc 0 wl nrate -r 54 wl rateset 54b wl country ALL wl up wl channel 1 wl scansuppress 1

Bandchannel
2.4GHz (2400~2483)1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13

wl txpwr1 -1 wl pkteng_start 00:11:22:33:44:55 tx 100 1000 0 wl phy_forcecal 1

Continuous Modulation Tx – 802.11n​

Modulationnrate (MCS)
BPSK0
QPSK1
QPSK2
16-QAM3
16-QAM4
64-QAM5
64-QAM6
64-QAM7

wl down wl band b Set band: a = 5G, b = 2.4G wl mpc 0 wl nrate -m 7 wl rateset 54b wl country ALL wl up wl channel 1 wl scansuppress 1 wl txpwr1 -1 wl pkteng_start 00:11:22:33:44:55 tx 100 1000 0

Bandchannel
2.4GHz (2400~2483)1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13
5GHz Band 1(5150~5250)36, 40, 44, 48
5GHz Band 2(5250~5350)52, 56, 60, 64
5GHz Band 3(5475~5725)100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140, 144
5GHz Band 4(5725~5850)149, 153, 157, 161, 165

wl phy_forcecal 1

Continuous Single-Tone Tx​

Set band: a = 5G, b = 2.4G wl band b wl out wl fqacurcy 1

Bandfqacurcy
2.4GHz (2400~2483)1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13
5GHz Band 1(5150~5250)36, 40, 44, 48
5GHz Band 2(5250~5350)52, 56, 60, 64
5GHz Band 3(5475~5725)100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140, 144
5GHz Band 4(5725~5850)149, 153, 157, 161, 165

Continuous Modulation/Single-Tone Tx​

Select desired channel

Path loss Click Start to analyze packets Output power

EVM

Symbol clock Freq. Tolerance

Continuous Rx Configuration​

The following procedure shows the setup for OFDM 54 Mbps signal sequence with a 1000 packet count and describes how to calculate the RX Packet Error Rate using IQview and WL commands.

Set up the IQview VSG function for Continuous Rx​

Step1. Execute IQview.exe and the GUI shows below.

Step2. From the GUI, select Tools and then click Vector Signal Generator.

Set up the IQview VSG function for Continuous Rx​

Step3. The Vector Signal Generator GUI shows below.

Step4. Select File and click Open Generator File to load the wave-form.

Set up the IQview VSG function for Continuous Rx​

Step5. From the Open Signal File, select the desired wave-form file and click Open.

For test 802.11b(11M), please select CCK_11.mod 802.11a/g(54M), please select OFDM_54.mod 802.11n(mcs7), please select mcs7_HT20.mod (IQ MIMO)

Set up the IQview VSG function for Continuous Rx​

Click Start to sent packets Select desired channel

Set the number of data packets=1000

Set the desired output power

Continuous Rx​

wl down wl band auto wl mpc 0 wl country ALL wl scansuppress 1 wl channel 7 wl bi 65535

Bandfqacurcy
2.4GHz (2400~2483)1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13
5GHz Band 1(5150~5250)36, 40, 44, 48
5GHz Band 2(5250~5350)52, 56, 60, 64
5GHz Band 3(5475~5725)100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140, 144
5GHz Band 4(5725~5850)149, 153, 157, 161, 165

wl up wl counters

Continuous Rx​

Step2. Enter the ./wl counters command and note the number following the rxdfrmocast (9957).

Continuous Rx​

Step3. Click the Start button and then enter the ./wl counters command .

Step4. After enter the ./wl counters command and note the number following the rxdfrmocast (10905).

Continuous Rx​

Step5. The RX PER

= (Total lost packets at receiver / Total sent packets from the VSG)*100%

In this example:

Total packets received = 10905-9957=948.

So, the Total lost packets at receiver = 1000-948 = 52.

Thus, the RX PER = 52/1000 = 5.2% for -70dBm, OFDM 54Mbps