10/5 Mhz channel width is possible ?

10/5 Mhz channel width is possible ?

[Waldek]

Hi,

I have linux kernel version 3.19 and iw tool v3.17. I have use USB WIFI WN722N which use ATH9k_htc driver from kernel
I would like setup channel width 5 MHZ form my ad-hoc Mesh network base on olsrd

I have try setup in following

iw wlan0 set type ibss
ip link set wlan0 up
iw wlan0 ibss join MYNet 2447 5MHZ

but I have message:

command failed: Invalid argument (-22)

when I use 
iw wlan0 ibss join MYNet 2447

no error message but channel width is 20 Mhz

I have see syntax iw tools:

 iw   dev <devname> ibss join <SSID> <freq in MHz> [HT20|HT40+|HT40-|NOHT|5MHZ|10MHZ] [fixed-freq] [<fixed bssid>] [beacon-interval <TU>] [basic-rates <rate in Mbps,rate2,...>] [mcast-rate <rate in Mbps>] [key d:0:abcde]

it is look that in ibss mode I can set 10 or 5 Mhz width channel but don't work

I have local network which working on OpenWRT with UBNT devices with channel width 5 Mhz
I would like get access to my local network from my laptop with Linux and use USB WIFI WN722N

What is wrong ??

Thank you for help and any suggestion

Waldek

Re: 10/5 Mhz channel width is possible ?

[Oleksij Rempel]

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Am 16.02.2015 um 10:51 schrieb Waldek:
> 
> Hi,
> 
> I have linux kernel version 3.19 and iw tool v3.17. I have use USB WIFI WN722N which use ATH9k_htc driver from kernel
> I would like setup channel width 5 MHZ form my ad-hoc Mesh network base on olsrd
> 
> I have try setup in following
> 
> iw wlan0 set type ibss
> ip link set wlan0 up
> iw wlan0 ibss join MYNet 2447 5MHZ
> 
> but I have message:
> 
> command failed: Invalid argument (-22)
> 
> when I use 
> iw wlan0 ibss join MYNet 2447
> 
> no error message but channel width is 20 Mhz
> 
> I have see syntax iw tools:
> 
>  iw   dev <devname> ibss join <SSID> <freq in MHz> [HT20|HT40+|HT40-|NOHT|5MHZ|10MHZ] [fixed-freq] [<fixed bssid>] [beacon-interval <TU>] [basic-rates <rate in Mbps,rate2,...>] [mcast-rate <rate in Mbps>] [key d:0:abcde]
> 
> it is look that in ibss mode I can set 10 or 5 Mhz width channel but don't work
> 
> I have local network which working on OpenWRT with UBNT devices with channel width 5 Mhz
> I would like get access to my local network from my laptop with Linux and use USB WIFI WN722N
> 
> What is wrong ??
> 
> Thank you for help and any suggestion
> 
> Waldek

Theoretically it should be possible, but i we need some changes in the
firmware.

-- 
Regards,
Oleksij


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