Develop Bugs

Wifi 802.11n limited to 65Mbps max?

I've stumbled across a number of postings that mentioned people get a maximum throughput of 65Mbps with the Wifi N mode on the Desire. That would make sense as it likely only utilizes 2.4GHz with limited internal antenna capabilities.
What it also means is that 802.11n is pretty pointless compared to 802.11g which already provides data rates of 54Mbps, and reportedly consumes less battery power.
It was also reported that the official Froyo release already activated 802.11n mode, which would make further modifications unnecessary.
My questions in the interest of throwing anything related to 802.11n out of the ROM:
1) does Froyo indeed include N support? (I don't have a N router and can not test it)
2) is N indeed limited to a max data rate of only 65 Mbps on the Desire?
Thanks for reading and hopefully feedback
Mac

I have an 802.11n router and gets a max of only 65 mbps transfer rate using Froyo. I have since disabled N support on my Desire to save some batt life.

Using Pays Froyo 1.9 with enabled N and connecting up to 72Mb/s.
Sent from my HTC Desire using XDA App

mmaacc said:
I've stumbled across a number of postings that mentioned people get a maximum throughput of 65Mbps with the Wifi N mode on the Desire. That would make sense as it likely only utilizes 2.4GHz with limited internal antenna capabilities.
What it also means is that 802.11n is pretty pointless compared to 802.11g which already provides data rates of 54Mbps, and reportedly consumes less battery power.
It was also reported that the official Froyo release already activated 802.11n mode, which would make further modifications unnecessary.
My questions in the interest of throwing anything related to 802.11n out of the ROM:
1) does Froyo indeed include N support? (I don't have a N router and can not test it)
2) is N indeed limited to a max data rate of only 65 Mbps on the Desire?
Thanks for reading and hopefully feedback
Mac
Click to expand...
Click to collapse
Not sure about anyone else, but with 802.11g the phone will connect at roughly half signal to my router, speeds of about 20-25mbps, when i connect via 802.11n the signal is much better and it connect at full 65mbps, though yeah i never get above 65mbps, i think this has to do with the antenna arangement, 802.11n had 3 antennas, and i think the desire only has 1 so the total speed is limited

i´m more interrested in the speed you transfer with on the diffrent modes since i get less than 20Mbit with G from local to local.. and i wonder if i sould invest in N ? does it give higher transferrates ? eg the speed of the filetransfer between comps..

sorry to ask
sorry to ask a noob question, but where again do you check to see the speed of your wireless, I did it once but can't remember how.

Phone *#*#4636#*#*. As to higher WiFi N speeds. We won't get higher speeds that 65-72Mbps because WiFi N mostly operates on the 5GHz band.

lollylost100 said:
Phone *#*#4636#*#*. As to higher WiFi N speeds. We won't get higher speeds that 65-72Mbps because WiFi N mostly operates on the 5GHz band.
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Click to collapse
Thank you.

amf said:
I have an 802.11n router and gets a max of only 65 mbps transfer rate using Froyo. I have since disabled N support on my Desire to save some batt life.
Click to expand...
Click to collapse
How did you disable N support on the Desire?

lollylost100 said:
Phone *#*#4636#*#*. As to higher WiFi N speeds. We won't get higher speeds that 65-72Mbps because WiFi N mostly operates on the 5GHz band.
Click to expand...
Click to collapse
what a brainfuck 802.11 works with up to 600mbps at 2.4 ghz like on 5 ghz
. i wrote exams about wifi.
i bet the desire uses 1 antenna so it can get a max of 150mbps symbol rate.
but i think it uses a channel bandwidth of 20 mhz instead of 40 mhz so it is limited to the half of 150!!!

Well im currently connected at 72 using LeeDroid

lollylost100 said:
Phone *#*#4636#*#*. As to higher WiFi N speeds. We won't get higher speeds that 65-72Mbps because WiFi N mostly operates on the 5GHz band.
Click to expand...
Click to collapse
ye this just shows your connected speed..
to get the actual speed you need to transfer a file between computers locally.
those 2 speeds vary alot since it depends on noise and interferrence and loss.
bongmaster2 said:
what a brainfuck 802.11 works with up to 600mbps at 2.4 ghz like on 5 ghz
. i wrote exams about wifi.
i bet the desire uses 1 antenna so it can get a max of 150mbps symbol rate.
but i think it uses a channel bandwidth of 20 mhz instead of 40 mhz so it is limited to the half of 150!!!
Click to expand...
Click to collapse
Souns like that could be the reason..

Murd0ck said:
ye this just shows your connected speed..
to get the actual speed you need to transfer a file between computers locally.
those 2 speeds vary alot since it depends on noise and interferrence and loss.
Souns like that could be the reason..
Click to expand...
Click to collapse
the max payload data rate is 40 % of the symbol data rate

bongmaster2 said:
what a brainfuck 802.11 works with up to 600mbps at 2.4 ghz like on 5 ghz
. i wrote exams about wifi.
i bet the desire uses 1 antenna so it can get a max of 150mbps symbol rate.
but i think it uses a channel bandwidth of 20 mhz instead of 40 mhz so it is limited to the half of 150!!!
Click to expand...
Click to collapse
OK, that explains it. So we have a physical limit here for the throughput.
How about the better signal strength for N? This may be the result of the coding scheme. And more importantly, does the stock Froyo already provide 802.11n, so we could get rid of all the firmware and module hacks?

Bongmaster is right, you have different speeds for wireless N devices.
The desire is 1T1R (1 transmitter 1 receiver), and therefore can only only get 150mbps as a max theoretical speed. 2T2R is required for 300mbps operation.
However as mentioned, this only works with 40mhz channel bandwidth, 20mhz will cut it in half again.
Can someone force 40mhz channel bandwidth on their router and post results? Most Wireless N routers seem to come with 20mhz as the default setting.

Let me bump this again, there is one important question that was not answered yet:
Does the stock Froyo release (OTA) support Wifi 802.11n or not? I can not test it as I don't have access to a N router.
Thanks!

Everything I have read says yes.
Sent from my HTC Desire using XDA App

mmaacc said:
Let me bump this again, there is one important question that was not answered yet:
Does the stock Froyo release (OTA) support Wifi 802.11n or not? I can not test it as I don't have access to a N router.
Thanks!
Click to expand...
Click to collapse
+1 need to know also.
BUMP.

eXDee said:
Bongmaster is right, you have different speeds for wireless N devices.
The desire is 1T1R (1 transmitter 1 receiver), and therefore can only only get 150mbps as a max theoretical speed. 2T2R is required for 300mbps operation.
However as mentioned, this only works with 40mhz channel bandwidth, 20mhz will cut it in half again.
Can someone force 40mhz channel bandwidth on their router and post results? Most Wireless N routers seem to come with 20mhz as the default setting.
Click to expand...
Click to collapse
I did this and it made no difference, 72Mbps was the maximum it showed.
To be honest, I'm not sure the Desire is even capable of handling anywhere near this speed anyway. When connected to my home wireless at this speed, the actually download speed I get via speedtest.net is somewhere around 15-20Mbps and I have a 50Mbit connection.

Don't know what's up with all yours but mine is running at 425.9 MBPS.. IT is lightening fast, much faster than my 128mbps stick.
the actually download speed I get via speedtest.net is somewhere around 15-20Mbps and I have a 50Mbit connection.
Click to expand...
Click to collapse
That's all your getting from your ISP then when you tested, try it again at 2am or something when there's less people in your area sharing your bandwidth.

[Q]5Ghz Wifi?

Anyone been able to connect to a 5GHz WiFi network witht the Galaxy Nexus?
Forcing the "Wi-Fi Frequency band" setting to 5GHz only just results in an empty list of available networks, despite the phone being sat underneath a very decent enterprise-grade dual band AP (Ruckus 7363, Atheros chipsets). Have tried a bunch of different channels on the Ruckus AP (in both the 36-64 and 100-136 range) and switched between 20 and 40Mhz channel widths to no avail.
As far as I can tell, the Galaxy Nexus uses a BCM4330 chipset should have a 5GHz amp, would be ashame if there's no 5GHz antenna for it?!
Chris.

My bad. Think I was changing channels on the wrong AP when testing out 5GHz earlier.
The Galaxy Nexus does indeed support 5GHz, albeit on a limited number of channels (connecting at a 65MBps maximum datarate):
36
40
44
48

Just to finish up on this: After a bit of testing with an iPhone 4s (which also uses the same BCM4330 chipset and has no problems with any 5GHz channels), I'd guess that the GN's apparent limited support for 5GHz wifi is down to a software issue.
Basically the channels it supports are the ones that don't require DFS (Dynamic Frequency Selection) to be enabled on the AP, for use in the US (Europe apparently doesn't care about DFS).
I'd guess that the driver as is doesn't support interop with DFS (which I'd assume should be an AP-side function anyway) and rather than trust me that I'm in Europe, it just prevents those channels from being used.
Ashame, as it means 5GHz support is basically broken when it comes to using it with 'enterprise-grade' kit (not sure if consumer APs generally support DFS or not).

it should work with 5 Ghz WiFi
even the SGS2 works with 5 Ghz WiFi
at home i can connect using my 5 Ghz WiFi

chriscole said:
Just to finish up on this: After a bit of testing with an iPhone 4s (which also uses the same BCM4330 chipset and has no problems with any 5GHz channels), I'd guess that the GN's apparent limited support for 5GHz wifi is down to a software issue.
Basically the channels it supports are the ones that don't require DFS (Dynamic Frequency Selection) to be enabled on the AP, for use in the US (Europe apparently doesn't care about DFS).
I'd guess that the driver as is doesn't support interop with DFS (which I'd assume should be an AP-side function anyway) and rather than trust me that I'm in Europe, it just prevents those channels from being used.
Ashame, as it means 5GHz support is basically broken when it comes to using it with 'enterprise-grade' kit (not sure if consumer APs generally support DFS or not).
Click to expand...
Click to collapse
Hmmm...there's something odd going on with my GN with 5Ghz Wifi - I have a couple of Netgear routers 802.11N running on channels 36 and 44 and the GN connected no problems for the first few hours, but now it just won't grab an IP address. I've resorted to the G channels on 2.4Ghz, but have no idea why the handset suddenly won't pick up an IP on the 5Ghz even though I'm getting 'excellent' reception.
Any ideas? I've rebooted the phone and the network. The Mac and the iPad are the other devices on the 5Ghz and they're fine...

chriscole said:
I'd guess that the driver as is doesn't support interop with DFS (which I'd assume should be an AP-side function anyway) and rather than trust me that I'm in Europe, it just prevents those channels from being used.
Click to expand...
Click to collapse
Have you check if it's not just your Regulatory domain settings that are wrong? I don't have a GN yet so I can't check but used to be under Advanced in Wifi settings.

chingf0rd said:
Hmmm...there's something odd going on with my GN with 5Ghz Wifi - I have a couple of Netgear routers 802.11N running on channels 36 and 44 and the GN connected no problems for the first few hours, but now it just won't grab an IP address. I've resorted to the G channels on 2.4Ghz, but have no idea why the handset suddenly won't pick up an IP on the 5Ghz even though I'm getting 'excellent' reception.
Any ideas? I've rebooted the phone and the network. The Mac and the iPad are the other devices on the 5Ghz and they're fine...
Click to expand...
Click to collapse
Works fine on my Netgear WNDR3700, weird.

animaleyes76 said:
Works fine on my Netgear WNDR3700, weird.
Click to expand...
Click to collapse
It's very strange (I've got older DNDR3300 and WNDR3300 in the house) - it can see the SSIDs for 5Ghz, but just won't allocate me an IP address...I've looked at the wifi diagnostics through the *#*#info#*#* and there's nothing I can really do. I'm taking the thing back to '3' tomorrow.

chingf0rd said:
It's very strange (I've got older DNDR3300 and WNDR3300 in the house) - it can see the SSIDs for 5Ghz, but just won't allocate me an IP address...I've looked at the wifi diagnostics through the *#*#info#*#* and there's nothing I can really do. I'm taking the thing back to '3' tomorrow.
Click to expand...
Click to collapse
have you tried allocating it an ip address manually in the router, basically forcing dhcp to allocate a specific one? Did you try connecting with no encryption as well (def worth a go)

animaleyes76 said:
have you tried allocating it an ip address manually in the router, basically forcing dhcp to allocate a specific one? Did you try connecting with no encryption as well (def worth a go)
Click to expand...
Click to collapse
Yup - did all that. turned off encryption, added guest networks, turned off DHCP and entered manual IPs. The GN picks up the G and obtains the IP address no problem, but it just won't with the N...

chingf0rd said:
Yup - did all that. turned off encryption, added guest networks, turned off DHCP and entered manual IPs. The GN picks up the G and obtains the IP address no problem, but it just won't with the N...
Click to expand...
Click to collapse
Bummer. assumed you would have had done all that..

Just to add to the body of knowledge surrounding this. I have an Airport Extreme (Gen2), which had a recent firmware upgrade. This set it's automatic channel selection to use channel 100 - which my GN could not see. It took a downgrade from 7.6 to 7.4.2 for it to use channel 36 - and now I'm happy and connected. (I have other b/g APs in the house, but its nice to be on the fastest!)

clotheyes said:
Just to add to the body of knowledge surrounding this. I have an Airport Extreme (Gen2), which had a recent firmware upgrade. This set it's automatic channel selection to use channel 100 - which my GN could not see. It took a downgrade from 7.6 to 7.4.2 for it to use channel 36 - and now I'm happy and connected. (I have other b/g APs in the house, but its nice to be on the fastest!)
Click to expand...
Click to collapse
Was it a case that the GN could not see your network at all before?
I mean, my GN can 'see' the N networks, it just won't grab an IP - it just says 'Saved, secured WPA2 etc...' and will not obtain an IP.
I'm gonna replace the handset soon anyway with the volume 2g problem.

For reference: The 5Ghz spectrum isn't required to use N-based routing. It'll give you a bit more distance and speed, but not very much (think in the range of an extra ~10%). It's a misconception that 5Ghz is the only way to use the N-band.
As far as distance goes, that shouldn't really matter for your phone unless you're on the absolute fringe of the range. As for speed, you'll absolutely never notice a difference using a phone. The only time you'd notice a difference in speed is when transferring large files from computer to computer (or if your data connection is upwards of 25Mbps, but this wouldn't matter for the phone, either).

OK, if this is just for reference, we'd best get it right ;-) All slightly off topic, but it goes someway to explaining why having the GN support for all the 5GHz channels would be useful.
Signal propagation at 5GHz is generally worse than at 2.4GHz. All other things being equal (xmit power, antenna gains, interference, etc) a 5GHz signal will actually have less range than a 2.4GHz one.
The 2.4GHz/5GHz issue isn't so much about range or relative throughput in the best case scenario. It's about the worst case scenario - what happens to your speed when there's interference.
The 2.4GHz band has three, useful, non-overlapping 20MHz channels (1,6 and 11). 5GHz has around 19 non overlapping 40MHz channels (of which the Galaxy Nexus supports a measly four) *and* a scheme for dynamically avoiding interference on-the-fly (DFS).
This translates into significantly more stable performance on 5GHz compared to a congested 2.4GHz band (as it is in most built up urban areas - eg I see about 30APs broadcasting on 2.4Ghz now from my home in central London).
TLDR; If you live in a field - 2.4GHz is fine. If you live in a city, 5GHz is the future.
I'd suggest the following for a good bit of background on WiFi, along with some useful benchmarks showing just why most domestic APs/Wifi routers are crap in any case:
http://www.tomshardware.com/reviews/wi-fi-performance,2985.html
http://www.tomshardware.com/picturestory/571-wi-fi-beamforming-networking.html

Setting my Linksys 610 DDWrt router to channel 36 with a channel width of 40MHZ did the trick. Thanks!

chriscole said:
The 2.4GHz band has three, useful, non-overlapping 20MHz channels (1,6 and 11). 5GHz has around 19 non overlapping 40MHz channels (of which the Galaxy Nexus supports a measly four) *and* a scheme for dynamically avoiding interference on-the-fly (DFS).
Click to expand...
Click to collapse
Does anyone know if the "measly four" is a mistake by the firmware, a regulatory thing or just a hardware limitation?
My router performs best at channel 161 (it's a DD-WRT firmware thing) which means I can't see it on my phone, but I'm fine to access it on both my netbook and laptop.

Just want to thank the OP for this truly excellent thread. I also uncovered that the GN can also connect to the UNII-3 and the 5.8 ISM bands (channels 149-165), which are also non-DFS.

BinkXDA said:
Just want to thank the OP for this truly excellent thread. I also uncovered that the GN can also connect to the UNII-3 and the 5.8 ISM bands (channels 149-165), which are also non-DFS.
Click to expand...
Click to collapse
Seconded, I must have missed this post originally. I was pleasantly surprised to find that my GN connected to my Linksys E3000 running DD-WRT on channel 161 (40 MHz width).

chriscole said:
My bad. Think I was changing channels on the wrong AP when testing out 5GHz earlier.
The Galaxy Nexus does indeed support 5GHz, albeit on a limited number of channels (connecting at a 65MBps maximum datarate):
36
40
44
48
Click to expand...
Click to collapse
Thank you very much. Simple, concise, worked perfectly. Cheers mate.

[Q] 802.11n in 2.4 GHz -- short guard interval not supported?

I have recently configured my notebook as a WiFi access point for my GN (plus other devices owned by others). The wireless adapter on the notebook is a RTL8188CE which only works in the 2.4 GHz frequency band, but supports IEEE 802.11n on top of b/g. The spec says the highest bit rate supported is 72.2 Mbps (MCS index 7 with short guard interval [SGI] enabled). I've configured my access point with SGI, and checked the adapter capabilities that MCS #7 is indeed supported.
However, the GN phone seems unable to use the SGI mode, and reports "link speed" of 65 Mbps, which coincides with MCS index 7 without SGI, or MCS index 6 with SGI. Either case, the full speed is not utilized.
I'm fairly certain that my wireless AP configuration is correct, though haven't checked. I wonder whether this is a GN-specific issue? I can live with 65 Mbps; it's already better than what we can get from 802.11g mode, and my usage pattern does not demand very high throughput. Actually most of the bandwidth stays idle most of the time. I'm just curious whether this is a limitation of the phone hardware, or an Android issue.
And of course, perhaps I've never put the notebook's wifi into the highest-throughput mode ever, but that's quite unlikely.. but I'll check.
Ref: 802.11n data rates from Wikipedia https://en.wikipedia.org/wiki/802.11n#Data_rates

Added information: I tested the access point on a Windoze box and it reported 72 Mbps link speed. So now it seems an Android issue.

Fastest WiFi speed?

Hello,
I have just switched fiber provider at my place (FTTH) and I am now getting a whopping 1000 Mbps on my connection via gigabit ethernet.
My ISPs internet "box" luckily comes with 4 gigabit ports but only 2.4 Ghz WiFi (...). Which means that what actually reaches my portable devices is somewhere between 20 to 70 mbps, depending on my location in the house.
So, I ordered a Netgear R6220 to connect to my ISPs box, whose WiFi I will disable, hoping to get the most out of my fiber connection.
I see that this router supports simultenous Dual Band (300 + 867) which should exceed my ISPs downstream bitrate. But I wonder whether the 835 on my P2XL will be able to benefit from the simultaneous Dual Band transmission.
According to the specs it should (https://www.qualcomm.com/products/snapdragon-835-mobile-platform):
Wi-Fi
Wi-Fi Standards: 802.11ad, 802.11ac Wave 2, 802.11a/b/g, 802.11n
Wi-Fi Spectral Bands: 2.4 GHz, 5 GHz, 60 GHz
Peak speed: 867 Mbps
Channel Utilization: 20/40/80 MHz
MIMO Configuration: 2x2 (2-stream)
Peak QAM: 256 QAM
Wi-Fi Features: MU-MIMO, Multi-gigabit Wi-Fi, Dual-band simultaneous (DBS), Integrated baseband
Click to expand...
Click to collapse
But since the Peak speed is listed as 867 mbps, I'm not sure...
Anyone was ever able to max out the P2XLs WiFi speed?
Thanks!

This is mine today, I have seen higher from my wifi but this is right now.

This is the best speed i got using the 2XL
1Gbit line using a Asus RT-AX88U router.

Xeoc2 said:
This is the best speed i got using the 2XL
1Gbit line using a Asus RT-AX88U router.
Click to expand...
Click to collapse
Wow, this is impressive! I didn't think our Pixels could reach that level of performance!
I guess that the bottleneck for me will still be on the router, then, since I'm not getting anything quite like yours (smaller budget).
I'm getting from Amazon an R6220 and a couple of Tp Links (archer c7 - 1750 and archer c1200), the best one gets to stay! ?

You should be able to reach decent speeds with any of those routers the only reason I bought this one is so i don't need to buy another rooter any time soon.

https://amplifi.com/
There you can find fast access point for low price with high quality, I use only these

A70 wifi network speed

Is this max network speed for a70?
This is screenshoot form wifi settings.
On other phones i get 130mbps.

mine says 65. Ultra slow downloads. Heard some people talkin about using the 5 Ghz band of certain equipped routers or n band. It is just so slow downloading from my wlan I figured it must have something greater wrong with it. Like hackers again...who knows.

This is what mine says

On mine is 72mbps network speed and cant get over 49mbps download speeed on speedtest.net

433Mpbs on 802.11AC for me

I get a picture 130 mbps on my oreo device but both pie devices say 65 mBps.
My 1000/100/10 switch connects ethernet to various devices which easily shuttle the expected 80-130 actual MB/s around of large filetypes.
I don't have any sort of 5 Ghz router just the crappy device that the company sent out. And on that the MAC filter keeps getting disabled which increases my paranoia. Till 2 weeks ago I used the same crappy standard gateway/router for 6 years and frankly it was equal or better experience. At least that one started up reasonably fast. And its MAC filter was always on. But that could just indicate that the neighborhood brats had an easy backdoor to that one and didn't have to brute force off the MAC filter.
In my opinion the MAC filter getting disabled (now a few different times it has happened) indicatives a much much larger problem
I have been intending to get my own personal router for a while but there are too many options so I haven't had the scope to choose one yet.
Other phone in network displays 117mbps and is a Pie.

On same network 2.4ghz on s8,s7 i get 130mbps and on a70 72mbps max.
Just tried 5ghz on same network and got 150mbps it is a little faster.
But on 2.4ghz 72mbps is max.

hi guys
i have also same problem . cannot connect more than 72mbps , with 5ghz 150mbps max . something wrong but i could not find what is the problem .
you guys found any solution ?

mine has 72mb on 2.4 and 433mb on 5g...

Tactman said:
mine has 72mb on 2.4 and 433mb on 5g...
Click to expand...
Click to collapse
i think all a70 phones are like that

I just tested and got 158Mbs with a 5Ghz wifi connection, although only around 60Mps on 2.4Ghz.
Andre

I'll check mine later and see if I can figure out what's happening

Right next to the router I can see 96mbps in 2.4Ghz

Must be something wrong. I got 433mbps.

Nothing is wrong.
The Snapdragon 675 supports 2x2 chains on WiFi, but the A70 only has a 1x1 antenna so it connects at half the speed.
Link speeds on the A70 are as follows:
2.4 GHz = 72 Mbps
2.4 GHz (with 256 QAM) = 96 Mbps
5 GHz = 433 Mbps
On all devices with 2x2 on WiFi, the speeds above will be doubled on those.
These are in ideal network conditions with great signal strength and low interference. These numbers could reduce if you are far from the router.
This is not abnormal. A lot of mid-range devices only have 1x1 for WiFi.