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tetecko
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802.11n NV2 not more than 65Mbps/65Mbps

Sun Mar 24, 2013 11:39 am

I have 802.11n RB433AH+DBii-F50N-PRO on AP and client is Groove or RB411+R52Nm ..
NV2, 20MHz .. ROS 6.0rc11

Why is not connected more than 65Mbps/65Mbps? It looks like it use only long guard interval, why it not support short GI and then go to 72.2Mbps/72.2Mbps?

I try to search forum, somewhere is written, that NV2 not support short GI, somewhere that support short GI.

thanks in advance...
 
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ohara
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Re: 802.11n NV2 not more than 65Mbps/65Mbps

Sun Mar 24, 2013 12:08 pm

This post from Uldis confirms Nv2 wireless protocol supports short guard interval.
http://forum.mikrotik.com/viewtopic.php ... 18#p320792

On both AP and client use channel width: 20/40MHz, HT Guard Interval: any, protocol: nv2
and you should get tx/tx rate of 150Mbps/150Mbps
 
hipro5
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Re: 802.11n NV2 not more than 65Mbps/65Mbps

Sun Mar 24, 2013 12:20 pm

What is the signal that you get and the quality CCQ Tx/Rx at the speed that you are locked (65Mbps)?

Nv2 SUPPORTS and works better (as for me at least) with Sort GI cofig.
 
tetecko
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Re: 802.11n NV2 not more than 65Mbps/65Mbps

Sun Mar 24, 2013 7:00 pm

What is the signal that you get and the quality CCQ Tx/Rx at the speed that you are locked (65Mbps)?

Nv2 SUPPORTS and works better (as for me at least) with Sort GI cofig.
How can I set short GI ? I have HT Guard Interval = Any

this is same on Metal 5SHPn as AP .. which I send screenshot for some clients. Config is ...


name="ap_1" mtu=1500 mac-address=XXXXX arp=enabled disable-running-check=no interface-type=Atheros AR92xx
radio-name="XXXXXXX_AP1" mode=ap-bridge ssid="XXXXXXXXX" area="" frequency-mode=superchannel country=XXXXXXX
antenna-gain=0 frequency=5540 band=5ghz-a/n channel-width=20mhz scan-list=5470-5720 wireless-protocol=nv2 rate-set=default
supported-rates-a/g=6Mbps,9Mbps,12Mbps,18Mbps,24Mbps,36Mbps,48Mbps,54Mbps basic-rates-a/g=6Mbps max-station-count=2007 distance=dynamic
tx-power=19 tx-power-mode=all-rates-fixed noise-floor-threshold=default nv2-noise-floor-offset=default periodic-calibration=default
periodic-calibration-interval=60 dfs-mode=none wds-mode=disabled wds-default-bridge=none wds-default-cost=100 wds-cost-range=50-150
wds-ignore-ssid=no update-stats-interval=disabled bridge-mode=enabled default-authentication=yes default-forwarding=no
default-ap-tx-limit=0 default-client-tx-limit=0 proprietary-extensions=post-2.9.25 wmm-support=disabled hide-ssid=no
security-profile=default disconnect-timeout=3s on-fail-retry-time=100ms preamble-mode=both compression=no allow-sharedkey=no
station-bridge-clone-mac=00:00:00:00:00:00 ht-ampdu-priorities=0 ht-guard-interval=any
ht-supported-mcs=mcs-0,mcs-1,mcs-2,mcs-3,mcs-4,mcs-5,mcs-6,mcs-7,mcs-8,mcs-9,mcs-10,mcs-11,mcs-12,mcs-13,mcs-14,mcs-15,mcs-16,mcs-17,mcs-
18,mcs-19,mcs-20,mcs-21,mcs-22,mcs-23
ht-basic-mcs=mcs-0,mcs-1,mcs-2,mcs-3,mcs-4,mcs-5,mcs-6,mcs-7 ht-txchains=0 ht-rxchains=0 ht-amsdu-limit=8192 ht-amsdu-threshold=8192
tdma-period-size=4 nv2-queue-count=2 nv2-qos=default nv2-cell-radius=10 nv2-security=disabled nv2-preshared-key="" hw-retries=7
frame-lifetime=0 adaptive-noise-immunity=none hw-fragmentation-threshold=disabled hw-protection-mode=none hw-protection-threshold=0
frequency-offset=0 rate-selection=advanced multicast-helper=default multicast-buffering=enabled


this is setting on last client from registration table screenshot

name="uplink_1" mtu=1500 mac-address=XXXXXX arp=enabled disable-running-check=no interface-type=Atheros AR92xx
radio-name="XXXXXXX" mode=station-bridge ssid="XXXXXXXXX" area="" frequency-mode=superchannel country=XXXXXX
antenna-gain=0 frequency=5180 band=5ghz-a/n channel-width=20mhz scan-list=5470-5725 wireless-protocol=nv2-nstreme-802.11 rate-set=default
supported-rates-b=1Mbps,2Mbps,5.5Mbps,11Mbps supported-rates-a/g=6Mbps,9Mbps,12Mbps,18Mbps,24Mbps,36Mbps,48Mbps,54Mbps basic-rates-b=1Mbps
basic-rates-a/g=6Mbps max-station-count=2007 distance=dynamic tx-power=15 tx-power-mode=all-rates-fixed noise-floor-threshold=default
nv2-noise-floor-offset=default periodic-calibration=default periodic-calibration-interval=60 dfs-mode=none wds-mode=disabled
wds-default-bridge=none wds-default-cost=100 wds-cost-range=50-150 wds-ignore-ssid=no update-stats-interval=disabled bridge-mode=enabled
default-authentication=yes default-forwarding=yes default-ap-tx-limit=0 default-client-tx-limit=0 proprietary-extensions=post-2.9.25
wmm-support=disabled hide-ssid=no security-profile=default disconnect-timeout=3s on-fail-retry-time=100ms preamble-mode=short
compression=no allow-sharedkey=no station-bridge-clone-mac=00:00:00:00:00:00 ht-ampdu-priorities=0 ht-guard-interval=any
ht-supported-mcs=mcs-0,mcs-1,mcs-2,mcs-3,mcs-4,mcs-5,mcs-6,mcs-7,mcs-8,mcs-9,mcs-10,mcs-11,mcs-12,mcs-13,mcs-14,mcs-15,mcs-16,mcs-17,mcs-18,
mcs-19,mcs-20,mcs-21,mcs-22,mcs-23
ht-basic-mcs=mcs-0,mcs-1,mcs-2,mcs-3,mcs-4,mcs-5,mcs-6,mcs-7 ht-txchains=0 ht-rxchains=0 ht-amsdu-limit=8192 ht-amsdu-threshold=8192
tdma-period-size=2 nv2-queue-count=2 nv2-qos=default nv2-cell-radius=30 nv2-security=disabled nv2-preshared-key="" hw-retries=7
frame-lifetime=0 adaptive-noise-immunity=none hw-fragmentation-threshold=disabled hw-protection-mode=none hw-protection-threshold=0
frequency-offset=0 rate-selection=advanced multicast-helper=default multicast-buffering=enabled
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Last edited by tetecko on Sun Mar 24, 2013 7:14 pm, edited 3 times in total.
 
tetecko
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Re: 802.11n NV2 not more than 65Mbps/65Mbps

Sun Mar 24, 2013 7:02 pm

This post from Uldis confirms Nv2 wireless protocol supports short guard interval.
http://forum.mikrotik.com/viewtopic.php ... 18#p320792

On both AP and client use channel width: 20/40MHz, HT Guard Interval: any, protocol: nv2
and you should get tx/tx rate of 150Mbps/150Mbps
And if I don't want to use 40MHz channel width?
 
hipro5
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Re: 802.11n NV2 not more than 65Mbps/65Mbps

Sun Mar 24, 2013 7:26 pm

a. From the above screenshot with worst case -64db signal strenth, WHY do you lock at those LOW speeds? :?

b. Why don't you just pick as for the card's output Tx power its default settings?

c. How many clients are on this AP?

d. I see that you use "preamble-mode=short" as for the client, why's that?
 
tetecko
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Re: 802.11n NV2 not more than 65Mbps/65Mbps

Sun Mar 24, 2013 7:44 pm

a. From the above screenshot with worst case -64db signal strenth, WHY do you lock at those LOW speeds? :?

b. Why don't you just pick as for the card's output Tx power its default settings?

c. How many clients are on this AP?

d. I see that you use "preamble-mode=short" as for the client, why's that?
A) Don't sure for what you want to ask me for? :) Outdoor instalation - 20MHz, Metal 5SHPn = 1x1 MIMO
B) Outdoor is regulated here, we need to use maximal E.I.R.P, so I need to set maximal tx-power.
C) 20 registered clients right now, vary from 18 to 20 ...
D) Maybe it is lost configuration from past :)
 
hipro5
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Re: 802.11n NV2 not more than 65Mbps/65Mbps

Sun Mar 24, 2013 8:39 pm

Maybe the AP "shows" the worst shenario of - let's say - 13Mbps/39Mbps from a client, and doesn't autochange to short GI config.

But why does a client lock at THAT LOW speed with -60/-63dB signal?........It should lock at the MAXIMUM speed.... :? The CCQ is very bad of it and that's the reason it locks LOW. :(
Why that low CCQ?....Isn't the client "shows" directly the AP?
B) Outdoor is regulated here, we need to use maximal E.I.R.P, so I need to set maximal tx-power.
At what maximum EIRP level you're obliged to transmit at your place?
 
tetecko
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Re: 802.11n NV2 not more than 65Mbps/65Mbps

Sun Mar 24, 2013 11:36 pm

Maybe the AP "shows" the worst shenario of - let's say - 13Mbps/39Mbps from a client, and doesn't autochange to short GI config.

But why does a client lock at THAT LOW speed with -60/-63dB signal?........It should lock at the MAXIMUM speed.... :? The CCQ is very bad of it and that's the reason it locks LOW.
Why that low CCQ?....Isn't the client "shows" directly the AP?
B) Outdoor is regulated here, we need to use maximal E.I.R.P, so I need to set maximal tx-power.
At what maximum EIRP level you're obliged to transmit at your place?
It is not problem with client you interested in :) if I start bandwidth test to him, rate will rise up :) EIRP here is 30dBm maximum. but rate never rise more than 65/65.

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