Re: 5G roadblock: labor

[Mike Hammett <nanog () ics-il net>]

https://lmgtfy.com/?q=5G+NR 




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Mike Hammett 
Intelligent Computing Solutions 
http://www.ics-il.com 

Midwest-IX 
http://www.midwest-ix.com 

----- Original Message -----

From: "Brandon Martin" <lists.nanog () monmotha net> 
To: nanog () nanog org 
Sent: Monday, December 30, 2019 6:19:06 PM 
Subject: Re: 5G roadblock: labor 

On 12/30/19 6:31 PM, Ca By wrote: 
> is is still a physics thing. Most purest will says 5G = new radio (NR). NR can run in any band. And, the distance is 
> a function of the band. Tmobile is big on 600mhz NR, Sprint is big on 2500mhz NR and VZW has 28ghz NR. 

Is/are there defined standard(s) for this NR? I was of the impression that we were basically just tweaking the LTE-A 
MAC and OFDM[A] PHY for wider bandwidth (mid-band and mmwave) or newly available low-band (600MHz) spectrum 
deployments. AFAIK, there's no new PHY tricks going on for "5G" that aren't already being used for "4G" LTE-A 
deployments on existing mainstream spectrum. Aside from the new bands, what's the burden on the handset vs. base? A lot 
of tricks (beamforming, multi-site MIMO, etc.) can be done without real changes to the handset, and we can thankfully 
mostly upgrade the OFDM PHY to support e.g. denser modulation constellations in a somewhat incremental manner. 

I already see lots of outdoor small cells on fiber in dense retail, academic, business, etc. areas even in suburbs. I 
assume they're quite common in urban areas, though I don't get to do much work in those environments. Deployment of 
these started well before any 5G hype I was aware of even on the network operator side (think 6+ years ago). 

All that is to say, what's the magic secret sauce that makes "5G" any real different from "modern 4G"? I really don't 
want to go diving down the 3GPP document hole... 
-- 
Brandon Martin