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.
Click to expand...
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.

"N" -vs- "G" wifi on Vibrant/Galaxy

I noticed when I was at a friend's place recently that the Vibrant supports N wifi networks as well as G. However, I did not have the opportunity to do any extended testing.
I have noticed that wifi transfers over the network using various file sharing tools tend to be slow, and buffering with Allshare can be slow at times. What I'm wondering is, has anybody compared actual speed of Wifi on the Vibrant or Galaxy when using an N network versus G? Is the speed of the phone itself more the limiting factor, or would I get much better speeds using an N network?
Reason is, I'm currently using a Buffalo WHR-54GS router. It is a bit old, but using DD-WRT firmware, it has been rock solid. It does not, however, support N networking. I'm wondering if I would see any improvement in speeds transferring files and buffering DLNA connections by upgrading to a Buffalo WHR-HP-GN which supports N networking.
The only reason I'd upgrade would be for the N based Wifi - so if there's no benefit on my phone, then I wouldn't need to upgrade. Any input?

I have not had a chance to do any benchmarking but I have done allshare over both a G and N network and it did seem noticibly faster over the N network. Especially when paired with a gigabit hard wire to whaterver your streaming to/from.
Actually I think the gigabit helped as much as the wireless N, of course those routers tend to be more expensive...

I got a linksys wrt160n with ddwrt. the n doesnt work great with ddwrt but the router is great. i also have another n wireless but i dont notice much diference at all. maybe internal network stuff but not internet stuff.

Can't say I've done side-by-side comparisons, but it does seem to get some boost from the N speeds. For a new router, I'd suggest the ASUS RT-N16. Just about the most powerful consumer router out there (RAM & CPU) and it runs Tomato (plus dd-wrt)

N is better for streaming.
The N network allows a faster streaming and file transfer over the wifi. Now this will not improve your internet speed. The limit on the router might be higher, the modem will still have its limits. If you use allshare alot, I'll recommend you get a N router, otherwise no reason to purchase something you won't use. I have a Netgear dualband router (WNDR 3300). It supports both N and G networks but I rarely use the N since most of my devices do not support N. The ones I have that do like the Vibrant supports at 2.4ghz frequency. The router can be switched to broadcast the N at 2.4ghz, but like I said, If you're not streaming, there's really no need for it. To put this in numbers, the G networks can only transfer data at the maximum of 50mbps while the N can transfer files at Maximum of ~400mbps (if not higher). If your internet service does not offer more than 50mbps speed, then your internet will remain the same whether on G or N. You have been schooled

Helpful, informative post. Up until the last sentence.

Unless you only set your router to n you wont get the full advantage of using n you will only get compatibility. Having g on slows down you n network to a like speed. At least that what happens on my router, I have a dlink, when I did a little Googling it confirmed it.
Sent from my SGH-T959 using XDA App

Only Loki said:
Unless you only set your router to n you wont get the full advantage of using n you will only get compatibility. Having g on slows down you n network to a like speed. At least that what happens on my router, I have a dlink, when I did a little Googling it confirmed it.
Sent from my SGH-T959 using XDA App
Click to expand...
Click to collapse
May be specific to your Dlink. My Asus does G & N, and the N devices ran significantly faster than the G laptop that I still had connected until recently. The G laptop never slowed anything else down.

tide1988 said:
You have been schooled
Click to expand...
Click to collapse
tide1988 said:
To put this in numbers, the G networks can only transfer data at the maximum of 50mbps while the N can transfer files at Maximum of ~400mbps (if not higher).
Click to expand...
Click to collapse
If you are going to try to school people, please do it right and quit misleading people.
The Vibrant is not MIMO capable, so we only get a theoretical 150Mbps on 802.11N. Due to security and WiFi error correction, realistic throughput is ~70Mb/s. That is 8.75MB/s, slightly faster than an AData 16G class 6 card, but significantly slower than a SanDisk 8G Class 6 card.
On 802.11G, again due to WiFi error correction and security, a realistic throughput number is around 20Mb/s. That is 2.5MB/s, barely faster than a crappy Class 2 SD card.
Keep in mind that these are all "optimal" numbers. The amount of time that your vibrant will ever see these (more realistic) maximum numbers are probably less than 10% of the time.

Saiboogu said:
May be specific to your Dlink. My Asus does G & N, and the N devices ran significantly faster than the G laptop that I still had connected until recently. The G laptop never slowed anything else down.
Click to expand...
Click to collapse
Try a file transfer on N with the compatibility mode off (N Only) versus in B/G/N mode. You should see a speed increase on N only. However, with everything RF, you might have interfering neighbors that will influence testing.

Some of the wireless routers will slow down. it has to do with the router only having one band. In a dual simultaneous router, one band can be slowed to G speeds, such as my PS3 or my dad's 2nd gen iPod touch. My vibrant, however is automatically positioned on a completely seperate stream from the G devices.

i have a Cisco E3000
and i do see a small difference
about a minute difference in downloading a 600mb file

[Q] Fastest Link Speed you've seen over Wi-fi?

Forgetting all external speeds, what is the best link speed you've seen? I can't seem to get over 65Mbps on the GNex. I've got a 300Mbps 5gHz router that I am connected to and it will never connect at over 65Mbps.
Has anyone gotten higher? Yes, I know that is faster than most internet speeds but I'm interested in certain streaming at home and I'd like to get the best connection possible.

I'm connected at 65mbit too, it is N speed since regular wireless is 54mbit though. I haven't seen any specs other then it supports N networks.
Sent from my Galaxy Nexus using Tapatalk

And you need more than 65mbps why?

I bet the hardware is limited around that speed of 65Mbps...mobile cpu/ram is bottleneck.

Yup 65mbps is the max connection you will get - same as the iPad 2
Cant be bothered digging up details on why, because it wont change anything

Same here but with a net connection of 20Mbps then I don't think I'd often benefit from faster. Usually do file tranfers over wires as well

Laptop gets 50mbps down, GN2 only 25?

So, not having run a speedtest on my laptop in a while, I actually thought my roommate was lying to me when he said we should be getting faster internet. Apparently he's not. Question being, with the speeds people are pulling on LTE, why can't I pull the same speeds from my wifi on my laptop as my GN2? My laptop is getting 50mbps down, while my Note tops out around 25mbps although yesterday I pulled a couple over 30mbps which has never happened before. Can anyone explain why I'm topping out like that when so much more is capable?

It can be a number of factors, buildings , wind , weather, static interference, anything could be a factor. It won't always be consistent.
Sent from my SGH-T889 using Tapatalk 2

horr1blek1tten said:
It can be a number of factors, buildings , wind , weather, static interference, anything could be a factor. It won't always be consistent.
Sent from my SGH-T889 using Tapatalk 2
Click to expand...
Click to collapse
Those factors have nothing to do with wifi or why my phone wont go over 25mbps when it can go way higher than that.

It could be the type of wifi antenna that we have on the phone. Max speed is achieved using MIMO streams which required multiple wifi antennas. I suspect that GN2 wifi have only one antenna, one stream up or down.

erm1001 said:
It could be the type of wifi antenna that we have on the phone. Max speed is achieved using MIMO streams which required multiple wifi antennas. I suspect that GN2 wifi have only one antenna, one stream up or down.
Click to expand...
Click to collapse
Just seems odd that it maxes out at that speed on wifi yet with LTe its capable of double that. Does anyone else get more than 25mbps on their wifi?

Mobile app might not use as much data. Not as much time to optimize the connection and really fly.
The pc site may be allowed more bandwidth to get a speedy connection with.
My two cents.
Hastily spouted for your befuddlement

LTE and wifi are not using the same antenna. MINO is the basic for wifi (N) to achieve higher speed. If you go out and by wireless adaptor. Usually there 2 type of Wifi (N) offer 150N and 300N. The 150N has only one attenna, and the 300N usually has at least 2 or more.

So... still curious, what are others getting on their home wifi?

What is your link speed. My usually at home SD shows 39 or 52 mbit but I have seen 72 too. I dont have internet service fast enough to see if phone is the bottleneck.
Sent from my SGH-T889 using xda app-developers app

darekz said:
What is your link speed. My usually at home SD shows 39 or 52 mbit but I have seen 72 too. I dont have internet service fast enough to see if phone is the bottleneck.
Sent from my SGH-T889 using xda app-developers app
Click to expand...
Click to collapse
When I look at the network in the task manager on windows I believe its actually like 130? Im at work now, have to check when I get home? Is that the correct way to find out?

computer - 32
phone - 27

At home I have 40/20MB and on my phone I get 38/19 at work I have 100/100MB and on my phone I get 85/80MB.
Uploaded from the black hole of my pocket with the Galaxy Note 2

So my link speed right now is actually 144 mbps, though during busy times it might go down to 130. It definitely seems like we are supposed to have better internet because I remember a couple months ago it was only 72. Anyways, what exactly am I doing wrong? Shouldn't I be getting even better than 50mbps on my laptop, at least? Also, my router came from Comcast, do I need to upgrade it to get the full effect or are my laptop and phone somehow limited? At home I'm getting better than 50 on my laptop so shouldn't I be getting 35 or 40 then, no problem, on my Note? It would be aggravating if Comcast was charging me for faster internet but not telling me I needed a new modem to take advantage of it. Actually, more like stupid than aggravating.

tony yayo said:
So my link speed right now is actually 144 mbps, though during busy times it might go down to 130. It definitely seems like we are supposed to have better internet because I remember a couple months ago it was only 72. Anyways, what exactly am I doing wrong? Shouldn't I be getting even better than 50mbps on my laptop, at least? Also, my router came from Comcast, do I need to upgrade it to get the full effect or are my laptop and phone somehow limited? At home I'm getting better than 50 on my laptop so shouldn't I be getting 35 or 40 then, no problem, on my Note? It would be aggravating if Comcast was charging me for faster internet but not telling me I needed a new modem to take advantage of it. Actually, more like stupid than aggravating.
Click to expand...
Click to collapse
Yes you will always loose some throughput over wireless unless you have a beast of a router but plugged in with the hardwire should give you full speed. I would test by hard wiring to the router with your laptop and running a speed test then hard wire to the modem and do a speed test. If both router and modem are the same. Then its a wireless issue.
Uploaded from the black hole of my pocket with the Galaxy Note 2

gforceriders said:
Yes you will always loose some throughput over wireless unless you have a beast of a router but plugged in with the hardwire should give you full speed. I would test by hard wiring to the router with your laptop and running a speed test then hard wire to the modem and do a speed test. If both router and modem are the same. Then its a wireless issue.
Uploaded from the black hole of my pocket with the Galaxy Note 2
Click to expand...
Click to collapse
Well, I'm obviously not going to hardwire my laptop or Note. Would simply spending 50 bucks on a router from best buy, also avoiding a rental fee from comcast, improve my optimal speeds for my laptop and N2?

tony yayo said:
Well, I'm obviously not going to hardwire my laptop or Note. Would simply spending 50 bucks on a router from best buy, also avoiding a rental fee from comcast, improve my optimal speeds for my laptop and N2?
Click to expand...
Click to collapse
That's just to trouble shoot if it is your router or modem that is bad so you don't buy a new one when that was not the problem.
Uploaded from the black hole of my pocket with the Galaxy Note 2

gforceriders said:
That's just to trouble shoot if it is your router or modem that is bad so you don't buy a new one when that was not the problem.
Uploaded from the black hole of my pocket with the Galaxy Note 2
Click to expand...
Click to collapse
Well it's just the normal router that comcast gave us but I believe this was actually the second time we've updated so couldn't it be possible our comcast issued router is outdated? I've never been able to get better on any public wifi. I've just always had this creeping feeling that my account is just old enough to be on a weird plan where I am throttled overall no matter where I'm at opposed to other people. I've just never been able to duplicate the speeds on any phone that other people in my same exact area have. Like I'm handicapped for some reason., I mean, I basically get the same speeds on my N2 that I got on my Sensation, if not lower sometimes, and that just makes no damn sense whatsover. Don't we have a kikass radio over the Sensation?

tony yayo said:
So, not having run a speedtest on my laptop in a while, I actually thought my roommate was lying to me when he said we should be getting faster internet. Apparently he's not. Question being, with the speeds people are pulling on LTE, why can't I pull the same speeds from my wifi on my laptop as my GN2? My laptop is getting 50mbps down, while my Note tops out around 25mbps although yesterday I pulled a couple over 30mbps which has never happened before. Can anyone explain why I'm topping out like that when so much more is capable?
Click to expand...
Click to collapse
I'm seeing similar to what you're seeing. I just had Verizon replace my router with a new Actiontec MI424WR which has gigabit & 802.11n. I have FiOS 50/25.
On a laptop running Windows 7 with an Intel 6300n wireless adapter one room away from the router I get 48-55 down. Sitting next to the laptop with the GN2 running ParanoidAndroid 3.15 with the LTE updated modem I get no more than 20 down. If I hold the phone 12 inches from the router in the other room, my Speedtest result hits as high as 33 down. If I take the laptop into the room and run the test next to the router, I consistently see 58 down.
Edit: Prior to getting my router replaced, I had the old Actiontec with 802.11g and if I recall, the laptop & GN2 both got around 12-15 down. Never better. Replacing the router made a huge difference but the laptop saw a high max down.

Slow Wifi

I am getting low speeds when using wifi on GS3 compared to my computer and brothers nexus 4. In my room which is the room next to the living room with the router I get about 16-20 mbps on 2.4 ghz and about 8-10 on 5ghz. My brother was getting about 40mbps on his nexus and my computer about 46 mbps.
What can I do to fix?

aamir123 said:
I am getting low speeds when using wifi on GS3 compared to my computer and brothers nexus 4. In my room which is the room next to the living room with the router I get about 16-20 mbps on 2.4 ghz and about 8-10 on 5ghz. My brother was getting about 40mbps on his nexus and my computer about 46 mbps.
What can I do to fix?
Click to expand...
Click to collapse
You could try on the ROM to set for one frequency band only instead of Auto. For example, 2.4 and not 5ghz. Also, your Router's admin page could give preference to a particular device with QoS settings.
Maybe reboot the router and cable modem/dsl to see if that might help.
It's a possibility you could try to change the wifi channel you are connecting on as well. It may be set as auto but may get interference. I would only caution, the laptops seems to have higher powered antennas and our phones usually aren't terribly high power so they may have the possibility of being susceptible to more interference whereas the laptop is not.

Get inSSIDer from the play store. It will help you find the best wifi channel.
Sent from my SGH-T999L using xda premium

TomTcom said:
You could try on the ROM to set for one frequency band only instead of Auto. For example, 2.4 and not 5ghz. Also, your Router's admin page could give preference to a particular device with QoS settings.
Maybe reboot the router and cable modem/dsl to see if that might help.
It's a possibility you could try to change the wifi channel you are connecting on as well. It may be set as auto but may get interference. I would only caution, the laptops seems to have higher powered antennas and our phones usually aren't terribly high power so they may have the possibility of being susceptible to more interference whereas the laptop is not.
Click to expand...
Click to collapse
I turned QoS off, speeds on every other device are great except for the phone itself. Like I said my bro standing next to me and my laptop in my room got around 40mbps (nexus 4) and my laptop got around 46-48 mbps while my S3 was only able to pull near 20mbps. I've tried limiting my frequency scans to 2.4ghz or 5ghz only and have not noticed any differences. Actually 5ghz seems to be slower which is weird since my bro and my phone are the only ones able to connect to that band. You guys think changing wifi drivers would make a difference in my phone? I know different kernels have different wifi drivers built in.
DocHoliday77 said:
Get inSSIDer from the play store. It will help you find the best wifi channel.
Sent from my SGH-T999L using xda premium
Click to expand...
Click to collapse
I used wifi analyzer to set the channel.
any other help from anyone would be appreciated.