Ipad can't get maximum of 802.11n (40 Mhz channel, 300 Mbps)

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deemona Author

Level 1

9 points

Ipad can't get maximum of 802.11n (40 Mhz channel, 300 Mbps)

Hi, Gens!

I have TP-Link 1043 with OpenWRT. My WiFi is 802.11n with 20 MHz width at 2,4 GHz and 40Mhz width at 5,2 MHz.

Encryption is WPA2 with AES

My laptop connects at follwoing RX/TX rates:

180.0 Mbit/s, MCS 12, 40MHz

270.0 Mbit/s, MCS 14, 40MHz

We can see everything goes fine and 40 MHz wide frequency rage is consumpted

At the same time, Ipad connect only at

24.0 Mbit/s, MCS 0, 20MHz

104.0 Mbit/s, MCS 13, 20MHz

And Iphone 5 - even worse - at

24.0 Mbit/s, MCS 0, 20MHz

52.0 Mbit/s, MCS 5, 20MHz

I looked a lot of discussions but I can not figure out what to do, to make my Iphone work fgaster than 65Mbits and Ipads - faster than 130Mbits... It is a maximum in my conditions and I dunno what to fix...

iPad mini (Retina) Wi-Fi, Cellular, iOS 7.0.4, the same with Ipad Air

Posted on Feb 22, 2014 1:47 PM

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Answer 1

Best reply

deemona Author

Level 1

9 points

Feb 22, 2014 2:27 PM in response to deemona

Sorry, I have 40Mhz at 2,4. My router has no 5GHz. Anyway, the question is still persistent

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Answer 2

brice42

Level 1

4 points

Mar 14, 2014 3:23 AM in response to deemona

Hi deemona,

Everything appears to be normal on your wireless network. It all comes down to what WiFi standards each device supports. On 2.4GHz the iPhone 5 only supports a max of 72Mpbs (20MHz, 1 stream). The new iPad (mini/Air) supports a max of 150Mbps (20Mhz, 2 streams).

On 5GHz things change slightly where both the iPhone 5 and new iPads support 40Mhz channel bonding allowing each to support higher speeds, the iPhone 5 150Mbps and new iPads 300Mbps.

Hope this helps!

Brice

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Answer 3

deemona Author

Level 1

9 points

Mar 14, 2014 6:31 AM in response to brice42

Thanks a lot for your responce!

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Answer 4

Aug 22, 2014 6:08 PM in response to brice42

Ok so then what about the iPhone 5s and iPhone 6? Can you tell us about the wireless standard they use please?

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