Thanks Ron for these corrections and updates.
Do you know if the fixed wireless trials are using proprietary technology, or
if they will ultimately become compatible with the 5G standards?
Regards
Craig
On Nov 5, 2017, at 6:14 PM, Ron Economos <w6rz@xxxxxxxxxxx> wrote:
Some corrections in-line.
On 11/05/2017 03:49 AM, Craig Birkmaier wrote:3gpp 5G standardization has been accelerated. Initial standards should be
So Bert is all hung up about the so called 5G fixed wireless broadband that
AT&T and Verizon are testing. Never mind that the 5G cellular standards will
not be published for 2-3 years. To Bert, is is clear that this stuff is NOT
REALLY 5G.
ready in 2018 for deployment in 2019. Another good Rohde and Schwarz video.
https://www.youtube.com/watch?v=eE_b7vWbkoI
He’s right!Millimeter frequencies are 30 to 300 GHz, although the 24 and 28 GHz bands
These trials could easily be conducted using off the shelf directional
antennas and existing Wi-Fi routers, especially those that support the
newest 802.11n and 802.11ac standards that operate in the millimeter wave
frequencies (2.4 and 5 GHz).
are usually included. 2.4 GHz is technically UHF (300 to 3000 MHz).
Here’s a company that offers such antennas and related gear. In some casesLong range WiFi hs been around for a while. Distance record is 189 miles.
it is possible to set up Wi-Fi links at distances of up to FIVE MILES.
https://www.radiolabs.com/products/wireless/directional-wireless-antenna.php
https://en.wikipedia.org/wiki/Long-range_Wi-Fi
The Wi-FI standards do not currently support Gigabit speeds, topping out atThe 802.11ac standard is capable of 3.5 Gbps with 4x4 MIMO. Even a single
about 300 Mbps. But there are plenty of levers to adjust to achieve higher
data rates as we saw in the example of the Samsung trial. We can use
slightly higher power levels, higher frequency and/or wider bands, or
multiple links to increase the data rate.
spatial stream is capable of 866 Mbps with a 160 MHz channel.
Routers are labeled with a speed specification. For example, my fairly old
Asus AC-RT66U is a AC1750 router. It's capable of 1.3 Gbps at 5 GHz and 450
Mbps at 2.4 GHz. AC5000 routers are being sold today.
https://en.wikipedia.org/wiki/IEEE_802.11ac
There is a WiFi band at 57 to 71 GHz (just recently expanded from 57 to 64
GHz). The standard is 802.11ad and it's mostly used for low-latency
(uncompressed) HDMI links. Range is a single room (no wall penetration).
https://en.wikipedia.org/wiki/Wireless_Gigabit_Alliance
This is not rocket science...or even military comms science. The massive----------------------------------------------------------------------
investments in wireless networking technologies over the past two decades
have provided the commercial building blocks needed to create optimized
solutions across a wide range of usage scenarios.
5G is just one class of such usage scenarios, which in reality are still in
the early phases of standardization. This does not prevent the telcos from
deploying “non-standard” technologies where the application does not require
such standards. Such is the case for fixed wireless, where it is relatively
easy to control the technology used at both ends of the data link.
Regards
Craig
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