5G 802.11n HT40 problem

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yokic_2958136
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I am testing for certification using CYW43907 product.

I knew that this product is certified as 2.4G & 5G 802.11n

But It has problem for HT40 MCS.

What's the problem?

I set up device with following command.

wl4343WA1.exe --serial 5 down

wl4343WA1.exe --serial 5 mpc 0

wl4343WA1.exe --serial 5 phy_watchdog 0

wl4343WA1.exe --serial 5 country ALL

wl4343WA1.exe --serial 5 band a

wl4343WA1.exe --serial 5 5g_rate -h 0 -b 40

wl4343WA1.exe --serial 5 channel 36/40

wl4343WA1.exe --serial 5 mimo_txbw 4

wl4343WA1.exe --serial 5 scansuppress 1

wl4343WA1.exe --serial 5 phy_txpwrctrl 1

wl4343WA1.exe --serial 5 txpwr1 -1

wl4343WA1.exe --serial 5 phy_txpwrctrl 0

wl4343WA1.exe --serial 5 up

wl4343WA1.exe --serial 5 phy_forcecal 1

wl4343WA1.exe --serial 5 pkteng_start 00:11:22:33:44:55 tx 100 1024 0

Then I measured the TX radio.

The result is bad. that spectrum was only 20MHz band, not 40MHz.

I attached it.

The firmware & Wiced version of the device I used is as follows.

Starting WICED vWiced_006.001.000.0085

Platform MVT001A initialised

Started ThreadX v5.8

Initialising NetX_Duo v5.10_sp3

Creating Packet pools

WLAN MAC Address : 44:91:60:28:5A:3C

WLAN Firmware    : wl0: Feb 12 2018 23:35:27 version 7.15.168.108 (r683813) FWID 01-81fd72af

WLAN CLM         : API: 12.2 Data: 9.10.74 Compiler: 1.31.3 ClmImport: 1.36.3 Creation: 2018-02-12 23:30:46

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Hi:

I think you need to use chanspec for this setting.

wl4343WA1.exe --serial 5 channel 36/40

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5 Replies
Zhengbao_Zhang
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250 sign-ins First comment on KBA 10 questions asked

hello:

    wl4343WA1.exe  is not used by 43907 ,  I think you need to use

43xxx_Wi-Fi\libraries\test\wl_tool\wl43909B0.exe to have a try .

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Dear zhez.

I expected you with advice, but the results do not change either.

Attach the resulting spectral image and command.

Can I get a certified document?


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Hi:

I think you need to use chanspec for this setting.

wl4343WA1.exe --serial 5 channel 36/40

Hi zhez

Your advice has been tested and the problem has been resolved.

Thank you very much.

What is the difference between channel and chanspec ?

hello:

    "wl channel" is only designed to change  channel like changing  from channel 1 to channel 6,  but can't change bandwidth .