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MikeP688
MikeP688
11/29/2015 | 4:05:09 AM
Couldn't Help But Wonder....
..what would Qualcomm's answer be to "Li Fi" that was commented on here with it emerging as an interesting (although as I see it not a necessarily viable) alternative to Wi-Fi.    

Fascinating times..no question...

 
sherifhanna
sherifhanna
9/10/2015 | 5:27:28 PM
Re: the great LTE-U debate
And not just Qualcomm results - independent testing backs up the claim that LTE-U has no more of an impact on Wi-Fi than Wi-Fi does (and many times, less impact).

 

Here's the new test resutls:

goo.gl/Uowc6t
kq4ym
kq4ym
9/10/2015 | 5:18:48 PM
Re: the great LTE-U debate
Is it a bit unusual for such an objection in the unlicensed spectrum? Or just a big stalling move by the wifi folks? Even with two sides to the issues it does appear there's no real concern for interference, or is Qualcomm overly optimistic? 
sherifhanna
sherifhanna
9/1/2015 | 6:06:39 PM
Re: the great LTE-U debate
You can see the test results in this Qualcomm FCC filing:

goo.gl/uOTV9F

The hardcore data starts on page 27. 
CraigPlunkett
CraigPlunkett
9/1/2015 | 10:07:42 AM
Re: the great LTE-U debate
Can anyone provide a Qualcomm link for the test setup of the first point in the article?
  • LTE-U has already been extensively tested, and not only does it not interfere with WiFi, WiFi performance actually improves slightly in some cases if you replace a single WiFi access point with LTE-U on a wireless network containing multiple access points.

It would be interesting to see the configuration of this test Wi-Fi network and how coexistence will impact the design of WiFi APs and networks going forward.
Sarah Thomas
Sarah Thomas
8/31/2015 | 4:54:02 PM
Re: the great LTE-U debate
I tend to agree there. They don't believe Qualcomm and friends no matter how many lab trials, demos and deployments in which they show it working well with WiFi. It'll take real-world deployments to prove it, but I doubt they'll be happy then. I'm sure it comes down more to money and business relationships than technology in the end.
Mitch Wagner
Mitch Wagner
8/31/2015 | 10:48:32 AM
Re: the great LTE-U debate
Sarah - My knowledge of this subject is incredibly one-sided. But it does seem to me that the WiFi side of this doesn't really have a case, and is trying to use the FCC to delay competition. 
Joe Stanganelli
Joe Stanganelli
8/30/2015 | 11:28:52 PM
Re: the great LTE-U debate
Indeed, the Alliance's argument is a bit like saying, "Millions of Americans are Bell customers so it is of critical importance for regulators to be satisfied that new telephone companies will coexist fairly before approving their existence."
Sarah Thomas
Sarah Thomas
8/28/2015 | 10:28:12 AM
the great LTE-U debate
I've never seen a debate as contentious -- and beginning to be circuituitous -- as this one in our industry. WiFi-first MVNOs like Republic Wireless are speaking out now too. I would think they would be the most effected, since they rely so heavily on WiFi. But, otherwise, I don't really see the wireless operators' objection at this point -- it's been shown not to interfere with WiFi (whether they believe it or not), so what are they worried about -- just new competition?


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