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h1. AirOS



http://en.wikipedia.org/wiki/List_of_WLAN_channels

http://wireless.kernel.org/en/developers/Regulatory

http://wireless.kernel.org/en/developers/Regulatory/Database

<pre>

Band [MHz] Max BW [MHz] Flags Max antenna gain [dBi] Max EIRP [dBm (mW)]

2402.000 - 2482.000 40.000 N/A 20.00 (100.00) => 80 MHz



5170.000 - 5250.000 40.000 N/A 20.00 (100.00) => 80 MHz

5250.000 - 5330.000 40.000 DFS N/A 20.00 (100.00) => 80 MHz

5490.000 - 5710.000 40.000 DFS N/A 27.00 (501.19) => 220 MHz

(total 5 GHz 380 MHz, 5600-5650 = radar = 50 MHz)

</pre>



http://www.ubnt.com/wiki/RF_Compliance



For example, if you select 5805 MHz (40 MHz channel) and Below, the radio will use (5775 to 5795 MHz) + (5795 to 5815 MHz),

but if you select 5805 MHz (40 MHz channel) and Above, the radio will use (5795 to 5815 MHz) + (5815 to 5835 MHz).



ath9k http://wenku.baidu.com/view/ac0523f57c1cfad6195fa7f4.html



Ubnt founder: http://www.forbes.com/forbes/2012/0116/entrepreneurs-robert-pera-computer-hardware-apple.html



h2. v5.3.5



http://wiki.ubnt.com/AirOS_5.3



Channel width 5/10/20/40



TX power min max dBm

Loco 4 23

NS 8 27

NB 4 23

Rocket -4 27



LocoM2 5/10/20/40 dBm 5-23



h2. Comparaison



5.3.5 vs 5.5



Linux version 2.6.15-5.2 (buildd@builder) (gcc version 4.1.2) Mon Dec 19 20:46:46 EET 2011 (janvier 2006)

Linux version 2.6.32.54 (buildd@builder) (gcc version 4.1.2) Fri Apr 6 14:56:27 EEST 2012 (decembre 2009)



6842240 May 19 17:07 XM-v5.3.5.build11245.bin

6472831 May 19 17:07 XM-v5.5.build12536.bin



h2. v5.5



http://www.ubnt.com/download#doc

http://www.ubnt.com/downloads/guides/airOS/airOS_UG_V55_3-20-12.pdf



Country Compliance Mode Frequency 4920 Mhz a 6100 MHz

Channel width 3/5/8/10/20/25/30/40



TX power min max dBm

Loco 4 23

NS -4 27

NB -8 23

Rocket -4 27



LocoM2 3/5/8/10/20/25/30/40 dBm 5-23 Freq 2312 a 2732 MHz (France 5/8/10/20/30/40 et 2412-2472)



IPv6 supported in command line ping6 fe80::xxx%br0 works



h2. Tagger les 2 ports ethernet sur firmware 5.5:

NB:La NS doit déjà fonctionner sans VLAN en mode bridge.

Onglet Network:

-> Configuration Mode: Advanced

Dans "VLAN Network":
-> Ajouter le LAN0 avec VLANID 12
-> Ajouter le LAN1 avec VLANID 12

Dans "Bridge Network" pour le "Bridge0":
-> Supprimer LAN0
-> Supprimer LAN1
-> Ajouter LAN0.12
-> Ajouter LAN1.12

Et appliquer la configuration.

Voila il reste plus qu'à configurer la machine/router pour utiliser ce vlan.

Exemple avec linux:
# ip link add link eth0 name eth0.12 type vlan id 12
# ip link set eth0.12 up
# ping6 fe80::31%eth0.12
PING fe80::31%eth0.12(fe80::31) 56 data bytes
64 bytes from fe80::31: icmp_seq=1 ttl=64 time=23.5 ms
^C
--- fe80::31%eth0.12 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 23.519/23.519/23.519/0.000 ms

h2. AirView test



References:

* http://forum.ubnt.com/showthread.php?t=52560

* ETSI EN 301 893 v1.7.0 (2012-01)

* http://www.etsi.org/deliver/etsi_en/301800_301899/301893/01.07.00_40/en_301893v010700o.pdf

** See diagram page 17 of the ETSI PDF



Lab on table same room compliance mode 5.5

- one NSM5 AP WDS

- one LocoM5 STA WDS 1 meter from the NSM5

- one NBM5 head (without dish) right in between Loco and NS running AirView



Steps for each graph

# associate NS and Loco with new frequency and width

# clear airview

# launch 300 second iperf client between netbook behind NSM5 to iperf server on locoM5

# after iperf is done save airview screenshot

# go back to step 1



h3. First batch testing narrow channels 5240 with 5200-5300 airview:



* 3 MHz

!5240-3.png!

* 5 MHz

!5240-5.png!

* 8 MHz

!5240-8.png!

* 10 MHz

!5240-10.png!

* 20 MHz

!5240-20.png!



h3. Second batch testing large channels 5300 with 5200-5400 airview:



* no emission to verify noise

!5300-0b.png!

* 10 MHz

!5300-10b.png!

* 20 MHz

!5300-20b.png!

* 30 MHz

!5300-30b.png!

* 40 MHz

!5300-40b.png!