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I just junked a netgear router with misbehaving wireless and nabbed a new one (Linksys WRT120N if you're curious) with N capability last night. I was hoping to get my SGT to connect at N speeds but unfortunately it keeps wanting to connect at G speed (54mbps). I've tried setting the router to N-only mode and the tablet still sees the AP, but it attempts to connect for a moment then goes back to scanning for APs. Yes, I've got great signal strength since I am sitting ~5 feet from the AP (the SGT icon shows full blue icon, my dbm is -34 for those of you that understand what it means).
Is the tablet's N capability disabled? I double checked the specs of my SCH-I800 on Verizon and Samsung's site and both say that the tablet has b/g/n wifi capability.
If you're nosy and want to know why in the world I'd even need N speeds, I have half a dozen computers in my house and some of them (thank you Microsoft) can't see the others for file transfers, so I copy the files over to my tablet from the source, then to the target. Not the best solution but I'd rather not toss up applications on all the computers and I haven't bothered buying equipment for a NAS device yet.
So... any revelations?
Samsung product info page: http://www.samsung.com/us/mobile/galaxy-tab/SCH-I800BKAVZW-features
Verizon product info page: https://www.verizonwireless.com/b2c...tail&selectedPhoneId=5565&deviceCategoryId=12
Dunno, I've got mine running on N just fine... Some of the lower end linksys routers have issues with N. You might look into dd-wrt and see if your router is compatible..
Sent from my SPH-P100 using XDA App
I've got a Linksys E3000 running Tomato, and my Tab connects. Notably, however, the Tab only supports some of the 5GHz channels and not others.
manekineko said:
I've got a Linksys E3000 running Tomato, and my Tab connects. Notably, however, the Tab only supports some of the 5GHz channels and not others.
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Pretty sure it only supports the 2.4ghz range of N. I could be wrong, but I doubt they would have included the 5ghz range of N wireless capabilities..
pvtjoker42 said:
Pretty sure it only supports the 2.4ghz range of N. I could be wrong, but I doubt they would have included the 5ghz range of N wireless capabilities..
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No, it supports 5Ghz range as well, just not all channels as I stated. My router is dual radio, and I have one SSID running at 2.4 and one SSID running at 5, and the Tab is connected to the 5 one.
It noticeably scans the 2.4 range before the 5 range, so first the 2.4 access points appear, and then the 5.
My personal experience was that I was able to achieve much much better download speeds by setting my router (WRT310N) to G mode only.
Before hand, when it was set to mixed I was getting speeds of like 1mbps download tops. Now I get 15+.
manekineko said:
I've got a Linksys E3000 running Tomato, and my Tab connects. Notably, however, the Tab only supports some of the 5GHz channels and not others.
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Would you mind mentioning 'some' of these channels so I don't have to manually go through all of them one by one to see if it'll work with my SGT?
LycaonX said:
Would you mind mentioning 'some' of these channels so I don't have to manually go through all of them one by one to see if it'll work with my SGT?
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Sure, no prob, I've got mine working on channel 36.
You can also take a look at my other post on this topic:
http://forum.xda-developers.com/showthread.php?t=1158878
Until recently I was using Connectify to set up a home wifi hotspot for my phone (TMOUS HD7, running 7720 with the latest T-Mobile/HTC firmware) to use. Yesterday I installed a router instead, which has allowed me to play with more network settings.
If I set the router to 802.11n-only, my HD7 can see it but can't connect. If I set it to 802.11g-only, everything works fine. Has anyone actually confirmed that the HD7 can do "n"?
my home wifi network is "n" and both my hd7's connect to it fine.
I have forced the n-mode, no problems connecting
Yep, Wireless N works perfectly fine here
Which 802.11n are you talking about? 2.4Ghz works but 5Ghz won't. so it only does draft n not full 300mbps 5ghz 802.11n
You are comparing two different things, WLAN standard has nothing to do with frequency, HD7 follows IEEE802.11b/g/n standard operating on 2.4 GHz with 20/40MHz bandwidth, allowing maximum throughput of 150Mbps. It is capable of DSSS and OFDM modulation, and is also capable of operating in dualband mode, which allows it to connect to 2.4 GHz and 5GHz IEEE802.11a/b/g/n networks, this is however up to the OEM to enable this feature, this is not the case for HD7, or any WP7 device out there.
Snake. said:
You are comparing two different things, WLAN standard has nothing to do with frequency, HD7 follows IEEE802.11b/g/n standard operating on 2.4 GHz with 20/40MHz bandwidth, allowing maximum throughput of 150Mbps. It is capable of DSSS and OFDM modulation, and is also capable of operating in dualband mode, which allows it to connect to 2.4 GHz and 5GHz IEEE802.11a/b/g/n networks, this is however up to the OEM to enable this feature, this is not the case for HD7, or any WP7 device out there.
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Draft-n was 2.4ghz 150mbps was it not? where as full rate 802.11n is 300mbps and operates at 5ghz?!
Well, yes and no, 802.11n is capable of data rates up to 600 Mbit/s, those are achieved only with the maximum of four spatial streams using a 40 MHz-wide channel. However, when in 2.4 GHz enabling this option takes up to 82% of the unlicensed band, which in many areas may prove to be unfeasible. I don´t have device which is able to be set to achieve this limit (2.4GHz / 40MHz with 400ns Guard Interval), so I can´t test it. Do you have internet connection that requires such a high value?
Snake. said:
Well, yes and no, 802.11n is capable of data rates up to 600 Mbit/s, those are achieved only with the maximum of four spatial streams using a 40 MHz-wide channel. However, when in 2.4 GHz enabling this option takes up to 82% of the unlicensed band, which in many areas may prove to be unfeasible. I don´t have device which is able to be set to achieve this limit (2.4GHz / 40MHz with 400ns Guard Interval), so I can´t test it. Do you have internet connection that requires such a high value?
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lol personally now i don't my links is 17mbit but i like the 300mbps for video streaming and file transfers, if only i had an access point with a gigabit lan interface haha
In order to get my Chromecast working with the latest Merlin flash I had to Enable the following on the "LAN / IPTV" page of Merlin firmware:
"Enable efficient multicast forwarding (IGMP Snooping)"
(If you're not familiar with Merlin version of the firmware for this router - it is essentially like the Asus firmware with some goodies / upgrades tacked on and fixes applied.)
I DID NOT enable IGMP Snooping settings in the 2.4ghz "Wireless / Professional" tab if anyone was wondering about that setting. I have limited knowledge of what these settings actually do and was just troubleshooting via trial and error.
I did a REBOOT through the router interface after setting the enabled setting in LAN / IPTV mentioned above.
Just to let you guys know as I didn't see anyone completely address it here and I was really struggling with getting my Chromecast set up on a new flash until I found this particular setting change.
I am running a pair of RT-AC66U's. (I keep one off-line that I play around with flashing Merlin and/or DD-WRT firmware and put on-line for testing purposes if something goes wrong with a flash or setting).
My version of Merlin is the latest Beta I could download at:
https://www.mediafire.com/folder/bkfq2a6aebq68//Asuswrt-Merlin#lt9d2blv8a9uh
I am using "Firmware:3.0.0.4.374.36_beta1 (Merlin build)" according to my configuration page. This is the latest Beta dated 12-23-2013.
I'd be interested in finding out if anyone is using anything different with success on Chromecast with this router configuration or if this is the only configuration that works. Haven't done any network testings of any substance yet but everything seems to be running smoothly.
Pings to my internal LAN server seem to be tight anywhere from about 1-5msec.
I run rt-n66u's and haven't had any issues but I am also not running the latest merlin.
Thanks for the post so after I upgrade if I am having issues I know what to try first.
Sent from my Nexus 5 using Tapatalk
I'm running the latest Merlin and have no issues with my cc. I haven't tweaked many if any of the router settings.
ChromeCast and Merlin firmware
Warjcowski said:
I'm running the latest Merlin and have no issues with my cc. I haven't tweaked many if any of the router settings.
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My setup was working for a while - but after about a week or so, the setup above seemed to totally dog out my Internet connection and it was definitely something in the router as I was getting 30+ mbps download and 10-20 mbps upload which is consistent with what my ISP says they are providing to me. (Tested by hooking up my Ubuntu laptop directly to the cable modem.)
I literally couldn't run Chromecast with Netflix. Not sure why the router got so bogged down after a few weeks. So I hooked up the standard Asus firmware - this worked fine for providing Internet access at fully subscribed speeds - but now the Chromecast won't work with the most recent firmware that Asus has for the RT-AC66U. Tried IGMP snooping and it doesn't seem to matter.
I see there is a third Beta revision of the Merlin firmware - presently. I'm going to try that version on my backup version of this router and see if that presents any problem or not with the Chromecast.
Wish there was a good troubleshooting guide for CC and this router. So many settings and very little information as to what works and what doesn't when using CC with the RT-AC66U router.
Haven't had my chromecast working for months with this router now. Kind of given up. Actually not sure how I even got it set up the first time.
Must have been sheer blind luck.
A lot easier just to hook up the laptop with display port or HDMI connection and stream to the TV.
Somewhat related but I have the N66U with Tomato FW and cc not connecting for some reason. Was fine on Merlin FW
I have a RT-N66U running Merlin 374.41 build. My Chromecast was working fine until a recent Chromecast update to the 16664 firmware. Unfortunately, I did upgrade the router sometime in the same timeframe, so I don't know which is the ultimate problem. Also, I checked my "efficient multicast forwarding" setting mentioned in the OP, and it was not enabled. I will try that and see if that changes anything.
To be clear, the Chromecast seems to connect to the wireless network, but it looks like the protocol traffic is getting lost since none of the other Chromecast enabled devices on the network can see the Chromecast. To fix it, I've been having to do a factory reset on the Chromecast and go through the setup procedure every time I want to use the Chromecast.
IGMP Snooping allows/tells the router to analyze the IGMP group information of packets and handle them based on that.
This allows for more-intelligent multicast packet forwarding to specific ports rather than flooding all ports.
It's very much akin to how a network switch remembers which addresses are connected to each port and sends packets destined for that address only to that port whereas a network hub will send every incoming packet to all ports, quickly flooding available bandwidth.
Quick example case - say you have two pairs of devices communicating, A->B and C->D, all on 100 Mbps (Fast Ethernet) connection.
On a switch (assuming full switching fabric), A's traffic to B will only go to the port B is on. The same is true for C's traffic to D.
Thus, A->B traffic will have full 100 Mbps bandwidth and C->D traffic will have full 100 Mbps bandwidth (minus overhead, of course).
On a hub, A's traffic to B will still "clog the pipe" on all ports, the same with C's traffic to D.
Thus, instead of A->B having a full 100 Mbps and C->D having a full 100 Mbps, the combined traffic shares 100 Mbps.
If things are equally balanced, A->B gets 50 Mbps and C->D gets 50 Mbps, but in reality this is rarely the case.
You can also think of this like having a dynamically-created VLAN memberships for multicast traffic.
However, the potential downsides are decreased throughput and increased latency for other traffic since some processing time is required to snoop the packets. Also, if the multicast client does not properly register, or router/switch has a bug, the client might get entirely ignored and "miss" the multicast packets entirely. That's why one of the troubleshooting steps is to toggle IGMP Snooping (it's usually disabled by default, but sometimes not) to see if there is an inadvertent shunning going on.
Ok, it looks like I needed to turn TKIP back on for the 2.4GHz network. Once I switched to AES+TKIP, the Chomecast shows up again on my mobile devices.
troycarpenter said:
Ok, it looks like I needed to turn TKIP back on for the 2.4GHz network. Once I switched to AES+TKIP, the Chomecast shows up again on my mobile devices.
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Interesting situation. I run AES-only but I've seen router "quirks" like this in the past.
On some old routers I had "creeping" configuration issues where after repeated configuration changes the router would eventually lose its mind and I had to reset the configuration and apply settings by hand again. Sometimes in the "lost its mind" configuration it would do very strange things.
Now would be a good time to back up your router configuration, just in case you have an issue like I had in the past.
I have a chromecast running with rt-ac66u router with dd-wrt. if I forget which atm but the chromecast had issue with either tkip or aes. I changed it to the other and it now works flawlessly.
Hi
I have a dual band router, and i prefer to have as many devices on 5ghz, as it performs A LOT better in my apartment.
Of course i know that the chromecast is 2.4ghz only.
I have this issue: When i start something (netflix, youtube, deezer) from a device on the 5ghz network, it starts fine, but when the tablets go to idle mode, very often they stop seeing the chromecast and i lose control of the content playing (although it is still playing). This is not an issue if i run the tablets on 2.4ghz.
Any ideas?
May have set the tablet to to only use 2.4ghz when you are using the CC. Settings are under advance I think under WiFi.
I know with my phones in the house we have to limit it to 2.4 instead of 5ghz or we don't even see the CC since the our router has 2 separate ids for 2.4 & 5
rekids said:
May have set the tablet to to only use 2.4ghz when you are using the CC. Settings are under advance I think under WiFi.
I know with my phones in the house we have to limit it to 2.4 instead of 5ghz or we don't even see the CC since the our router has 2 separate ids for 2.4 & 5
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That's weird, I have my 2.4 and 5Ghz networks with different SSIDs and I can see the Chromecast from either from both my tablet and Nexus phone regardless of which frequency they're on.
Really? Hmm with our moto maxx's and both RAZR M (all unlocked and rooted running newest firmware). When we have them in only 5ghz mode we can't see the CC
Are you sure the problem is actually related to using 5 GHz? I've seen the same problem on my 2.4 GHz devices - loss of connection to the Chromecast a few minutes after starting a stream, and difficulty of re-establishing it to control the stream. Maybe something else has changed, or you're just noticing the problem now.
DJames1 said:
Are you sure the problem is actually related to using 5 GHz? I've seen the same problem on my 2.4 GHz devices - loss of connection to the Chromecast a few minutes after starting a stream, and difficulty of re-establishing it to control the stream. Maybe something else has changed, or you're just noticing the problem now.
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Mines started doing it the last few days as well on 2.4ghz only, only some apps do it, youtube been one.
it's been my experience that CC can only be seen across 5 & 2.4GHz when channel width settings match across bands.
having said that, i've resorted to isolating the 2.4 band for CC traffic only, keeping all other devices (except tablet doing the mirroring) on the 5GHz band. ever since making the change, CC streaming has been relatively flawless.
It's probably a WiFI signal reception issue in general.
Case-in-point, I also have a dual-band router with different SSIDs on 2.4 GHz and 5 GHz APs (you really should use different SSIDs except in special cases).
When my phone has strong medium to signal, I have no problem using Chromecast while connected to 5 GHz. Phone sleeps, wakes, still connected.
However, I just moved my workstation to another room where 5 GHz is weak. 2.4 GHz is still strong (lower frequencies travel better), though.
With my phone on 5 GHz, control of Chromecast was sluggish. Chromecast's playback was fine because it's still getting good 2.4 GHz signal.
My phone went to sleep, and when it woke it "forgot" it was controlling Chromecast - in fact, it could not longer see any Chromecasts.
I switched over to the 2.4 GHz network and Chromecast was visible once more. I rather use 5 GHz on my phone and leave the 2.4 GHz band uncluttered, so I might have to relocate/reorient/reconfigure my router now...
When I'm streaming and tab casting from a laptop, I connect it to 5 and everything runs smoother because the data stream is divided over two frequencies. However I find that the Nexus 5 screen casting feature is not as content to operate if I'm connected to 5 GHz.
Sent from my Nexus 5 using Tapatalk
Hi all
I couldn’t find detail benchmarks of S5 implementation of Broadcom BCM4354 2x2 MIMO 5G WiFi 802.11ac module and in the end decided to take u plunge and purchased Asus ac68u router. Went thru setting up 5G ac wireless network and current results look like this:
S5 connects to 5G ac network with link speed of 866Mbps
File copy from:
Gigabit LAN wired PC to Routers attached USB 2.0 HDD 29MBps (240Mbps) - bottleneck usb 2.0 interface
5G ac WiFI S5 internal storage to Routers attached USB 2.0 HDD 11 MBps (90Mbps)
5G ac WiFI S5 sandisk 128GB microSD card to Routers attached USB 2.0 HDD 11 MBps (90 Mbps)
I have 100/100Mbps broadband internet connection and S5 on speed test performs as follows:
72Mbps DL / 75Mbps UL (same connection via wired PC benchmarks at 94Mbps DL / 95Mbps UL)
I haven’t managed to achieve transfers speeds above 100Mbps from or to S5 in any combination. Can you please share your experience of S5 wifi ac 5G network performance
Related : thread by xenokc about S5 performance on 802.11ac network
Thanks
Kreso
can you test with no encryption? wep/wpa completely off.
Isriam said:
can you test with no encryption? wep/wpa completely off.
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Yes, i have tried that, but there was no change. Router firmware is upgraded to the latest version / wireless test were done in close proximity (1 meter) to the router without any physical obstacles between (clear line of sight)
I'm really on a mission to achieve transfers speed in a range of 350Mbps-400Mbs on local LAN (which should be doable) but i cannot get pas 100Mbps!!
i'll try to test as i know AC should be able to do it.
..
fffft said:
802.11 ac provides a theoretical maximum stream speed of 433 Mbps or 900 MB/s across eight streams. That is under ideal conditions - maximum signal strength, zero interference, zero processing overhead and zero packet overhead. Many router 802.11ac chipsets only support four streams and due to real life channel contention, you aren't likely to see more than two or three 160 Mhz channels chopping that maximum speed to about 250 MB/s. All of those speeds assume channel bonding and quite a few routers can't bond 80 Mhz channels cutting that speed in half again (125 MB/s). Then you have real world losses due to signal attenuation, antenna inefficiencies and interference.
The S5 was the first smartphone to support two MIMO streams. But two is not three, so lop another third off our speed figure (or lop two thirds off for the iPhone 6 which only supports one stream). You simply won't achieve your goal with the S5 or any other current smartphone. 350 Mbps is the upper end of the maximum speed you might expect to see from a high end MIMO PC card under ideal conditions in the same room.
In real life and through a wall, you should expect considerably slower transfers. And the type of traffic matters too e.g. TCP traffic overhead often reduces speeds three fold over UDP streams in router speed tests.
.
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Thanks for detailed feedback, but then there is no benefit from implementing ac standard or 2 spatial streams suporrted by broadcom chipset when performance is comperable to WiFi n standard? But then again how did those guys here managed to pull of such results:
382MbpsDL
or
436Mbps
whit same hardware setup?
..
what kind of latency differences did you see between the wifi phone and your pc to the same server? i'm assuming speedtest.net or something like that?
This is strange as for my G900I I've been able to run an Internet speedtest at over 11 MBps (88mbps) over wifi on wireless N at my university which I imagine would have multiple connected devices. Wireless AC should be able to at least match the 88 mbps I had achieved.
Isriam said:
can you test with no encryption? wep/wpa completely off.
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No, don't do this. You must setup a WPA2 security encription to get maximum rates on WiFi N and AC.
Then, remove storage bottlenecks. Don't use a external HDD connected to a USB2 port. Much less on the same router, since USB performance is much lower on those devices. You will need to use 2 devices on the same LAN. One wired for maximum throughput tests. A ramdisk or a SSD on the host would help too, since HDDS are limited to 120-80Mb/s transfer speeds.
If you are going to use a file copy as measure, make sure you make it into the internal SD card of the phone, since external will be limited to around 8-12mb writes depending on the card quality.
To test networks you would need ramdisk to ramdisk copies, but I don't know how to setup this on android.
This is rather interesting to follow
iPerf is available on android.
Quick measurement gave me ~110-169 Mbits/sec using default values on 40mhz WiFi N 5ghz setup.
drapos said:
iPerf is available on android.
Quick measurement gave me ~110-169 Mbits/sec using default values on 40mhz WiFi N 5ghz setup.
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Thumbs up. Finding someone that uses IPERF for measuring proper network performance is golden. It irritates the heck out of me to find video's of people using ookla to measure their network speed, or like the OP, measuring against USB2. That's like measuring the speed of your new 600MB/s SSD installed on a SATA 1 controller and wondering why you are not seeing a significant improvement.
iperf is a little more complex than ookla though, and thats usually why. same reason most of us dont compile our own custom roms
really, there isn't much need to get over 100mbs on wifi for 90% of the public.
Isriam said:
iperf is a little more complex than ookla though, and thats usually why. same reason most of us dont compile our own custom roms
really, there isn't much need to get over 100mbs on wifi for 90% of the public.
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Just picked up the s5 because no store will sell me the note 4 retail price.
Linksys WRT1900ac stock firmware, 5Ghz a/c connected @ 300Mbit
From the phone to wired linux box @ 1000Mbit
187 Mbit up 207 Mbit down but of course it fluctuates. I don't use wifi for anything that requires that much bandwidth anyway, but I do get my full internet speed of 175/30 using the phone.
This post is rather old, but some of us may still be interested.
I was looking for an alternative to usb cable to transfer files fast between a pc and galaxy S5..
I've used a wifi-300 stick connected to usb port on PC: TL-wn821N, and configured my S5 as a mobile access point.
An ftp server is running on the phone and an ftp client on PC. i am accessing the AP via AirmoreAP hotspot, with wpa encryption.
I am watching the download rate via crystal internet meter for windows.
And this is the result: 64mbps/56 mbps (DL/UL) UL reading a microsd card on phone and writing to sata2 internal disk on pc.
I am wondering if I can reach much faster speed with a wifi-ac stick.