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Author Topic: Question about link speed  (Read 1082 times)

Iru786

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Question about link speed
« on: December 20, 2018, 10:04:50 AM »

Hi All,

Brought DIR-878, updated it to the latest version and everything seems to be fine but i have a question about link speed.

The max connection link speed i get on a wireless N device is 300 Mbps while on new wireless AC devices (Phones, Tablet), the max link speed i am getting is 433Mbps (Connected to 5 Ghz). Should it not be more?

Thanks in advance.

Regards
Iru
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GreenBay42

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Re: Question about link speed
« Reply #1 on: December 20, 2018, 10:09:30 AM »

Depends on a lot of factors. Distance, link quality, interference, etc).  5Ghz is "faster" but does not go through walls as well as 2.4 so if you are going through walls, mirrors, fish tanks, floors, etc the signal does degrade and you will get slower speeds.

How are you measuring the speed?

What phones/OS and Tablet do you have? 
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Iru786

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Re: Question about link speed
« Reply #2 on: December 20, 2018, 10:29:13 AM »

In terms of measuring speed, i am checking the details on the device to see what the connection link speed is. Any suggestion on ways to measure it in a better way?

In regards to the devices / OS, details are as below.

Phones: Redmi note 4 /5 on Android OS 8.1, Iphone SE on latest IOS
Laptops: Windows 10
Tablet: Ipad Air on OS 11.13 , Surface pro on Windows 10

In terms of distance, The WiFi signal is OK all around the house but for the test, I am still right in front of the router.

Thanks
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GreenBay42

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Re: Question about link speed
« Reply #3 on: December 20, 2018, 11:17:03 AM »

The connection link speed is the PHY speed (similar in Windows when the Ethernet connection only states 10, 100, or 1000Mbps but in reality the speeds can and will be slower depending on environment, quality and length of the Ethernet cable). it is not super accurate.

You can use WiFi Analyzer (iOS and android) which will show you any interference.  You can also go to http://speedtest.net from your computer and mobile devices (app - speedtest by ookla). This will measure your actual speed.

I found this guide and it does a pretty good job explaining Wi-Fi speeds and connection types. Section 4 (2.4) and section 5 (5ghz) will explain max speeds depending on the modulation and coding of both the router and client.

https://www.duckware.com/tech/wifi-in-the-us.html
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FurryNutz

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Re: Question about link speed
« Reply #4 on: December 20, 2018, 11:24:32 AM »

I use WiFiSweetSpots on iPhone and Android to get connections rates from devices to routers wifi.  ;)
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Iru786

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Re: Question about link speed
« Reply #5 on: December 20, 2018, 12:19:00 PM »

Thanks guys. Appreciate your replies.

I have used wifi analyzer and adjusted the channels. I have also done the speed test and I am getting the internet speed what I am supposed to. So that all fine.

My main curiosity was around the spec of AC1900 and whether the connection link on 5 Ghz should be around 1300 rather than 433 I am getting now. May be my understanding is incorrect. That's the reason for question.
Thanks
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GreenBay42

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Re: Question about link speed
« Reply #6 on: December 20, 2018, 12:32:21 PM »

Since your phones and tablets are only 2x2, you will never get anything over 800.  In a vacuum with no other wifi signals you may get close to 866 right next to the router but in real ife you are probably looking at 650 max. You then have the processor of both the client and router working, the wifi overhead (encryption), etc.

You may want to turn off smart connect which you can then give each band its own SSID and wifi password. This will put less overhead on the router connecting to clients.
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Iru786

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Re: Question about link speed
« Reply #7 on: December 20, 2018, 01:17:27 PM »

I was just trying that at the moment  :)
For some reason no matter what combination I try, I cannot get link speeds of more that 433 on phones and 300 on laptop.

Can't understand why. :-\
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FurryNutz

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Re: Question about link speed
« Reply #8 on: December 21, 2018, 06:51:45 AM »

If your iPhone is an SE, then that maybe the max conn rate they do. SEs were pretty much low budget phones. I in law has one.
You would need to pull up the Mfr and model of the Laptop wireless adapter card and look at the specs for that card. Depending upon age and design, 300Mb maybe max Conn Rate for that card. I know my old Mac Book Pro 2008 Maxes out at 300 on 5Ghz and 130 on 2.4Ghz. I still use it.
I have a Samsung Tab S2, I only see about 144Mb on it's conn rate. It's a few years old.
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Iru786

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Re: Question about link speed
« Reply #9 on: December 21, 2018, 07:00:04 AM »

Hi Guys

Thanks for all your reply on this. As you all suggested, i did check the spec of the hardware and it seems that it's the limitation of the hardware chipset that's limiting the speed.

Thank you all again.

Irfan
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FurryNutz

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Re: Question about link speed
« Reply #10 on: December 21, 2018, 07:01:39 AM »

Enjoy.  ;)
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Cable:200mb/10Mb>NetGear C7800>DIR-882>DGS-1100>HP 24pt Gb Switch. COVR-3902/2202/1203,DIR-2680,890L,882,880L,868L,DNR-202L,DNS-345x2,DCS-933L,936L and 960L.
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