[Make-wifi-fast] Fwd: [IP] LTE can mooch off of Wi-Fi spectrum with new Qualcomm chipset

[Dave Taht <dave.taht@gmail.com>]

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or we could try to make wifi better.

---------- Forwarded message ----------
From: Dave Farber <dave@farber.net>
Date: Sun, May 17, 2015 at 6:20 AM
Subject: [IP] LTE can mooch off of Wi-Fi spectrum with new Qualcomm chipset
To: ip <ip@listbox.com>



---------- Forwarded message ----------
From: Hendricks Dewayne <dewayne@warpspeed.com>
Date: Sun, May 17, 2015 at 7:45 AM
Subject: [Dewayne-Net] LTE can mooch off of Wi-Fi spectrum with new
Qualcomm chipset
To: Multiple recipients of Dewayne-Net <dewayne-net@warpspeed.com>


LTE can mooch off of Wi-Fi spectrum with new Qualcomm chipset
By Stephen Lawson
Feb 26 2015
<
http://www.pcworld.com/article/2889792/lte-can-mooch-off-of-wifi-spectrum-with-new-qualcomm-chipset.html
>

A chipset Qualcomm is introducing at Mobile World Congress next week is
likely to make mobile operators happy and some Wi-Fi fans nervous.

Amid a scramble for spectrum among cellular carriers, Qualcomm will
demonstrate a chipset that lets LTE cells operate in a radio band used by
Wi-Fi networks. The new silicon could double the amount of spectrum
subscribers can use in certain areas, and it’s just the first in a family
of chipsets that may eventually tap into five times as much.

The FSM 99xx chipset for small cells, along with a matching transceiver
that will go into mobile devices, are among the first products coming for
so-called Licensed Assisted Access. LAA, sometimes called LTE-Unlicensed,
is one of several emerging techniques to take advantage of the large amount
of spectrum available in unlicensed bands used by Wi-Fi. Verizon Wireless,
T-Mobile USA and SK Telecom all have shown interest in using LAA. Combining
unlicensed spectrum with traditional carrier frequencies will be a major
trend on display at MWC.

The benefit of unlicensed spectrum is that it’s free for anyone to use, so
carriers can tap into it without paying billions in an auction or going
through a long licensing process. But that’s also what makes it risky,
according to the Wi-Fi Alliance. The industry group fears that without the
right safeguards, LTE networks could hurt Wi-Fi performance. It’s working
with the 3GPP cellular standards group on future rules to prevent
interference.

'Good neighbor'

Qualcomm says its product is ready to be a good neighbor. Tests at Qualcomm
showed that putting up a cellular base station built with the new chipset
won’t affect nearby Wi-Fi users any more than adding another Wi-Fi access
point would, said Mazen Chmaytelli, senior director of business development
at Qualcomm. It plans to offer products with future safeguards once they’re
finished but says they aren’t needed to keep Wi-Fi safe.

LAA uses the 5GHz band, the biggest one for Wi-Fi. The system won’t let
carriers set up LTE networks that just use unlicensed spectrum. It’s
designed to add some spectrum to a regular licensed network where
necessary, and only for downstream traffic. All the data going out to the
Internet from the phone still goes over LTE.

Qualcomm says LAA a better alternative to the Wi-Fi hotspots that many
carriers install to offload traffic in busy areas. For one thing, Qualcomm
tests have shown it’s at least twice as efficient, said Mazen Chmaytelli,
senior director of business development at Qualcomm. LTE can carry more
data with the same amount of spectrum than Wi-Fi can, so it can give users
a bigger performance boost. Also, subscribers stay on the cellular network
while they use LAA, so they don’t have to go through a handoff to a
different network, Chmaytelli said.

[snip]

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-- 
Dave Täht
Open Networking needs **Open Source Hardware**

https://plus.google.com/u/0/+EricRaymond/posts/JqxCe2pFr67

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