<html><head><style type='text/css'>p { margin: 0; }</style></head><body><div style='font-family: arial,helvetica,sans-serif; font-size: 10pt; color: #000000'><span style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: small; white-space: pre; background-color: rgb(255, 255, 255);">https://lmgtfy.com/?q=5G+NR</span><br><br><div><span name="x"></span><br><br>-----<br>Mike Hammett<br>Intelligent Computing Solutions<br>http://www.ics-il.com<br><br>Midwest-IX<br>http://www.midwest-ix.com<span name="x"></span><br></div><br><hr id="zwchr"><div style="color:#000;font-weight:normal;font-style:normal;text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt;"><b>From: </b>"Brandon Martin" <lists.nanog@monmotha.net><br><b>To: </b>nanog@nanog.org<br><b>Sent: </b>Monday, December 30, 2019 6:19:06 PM<br><b>Subject: </b>Re: 5G roadblock: labor<br><br>On 12/30/19 6:31 PM, Ca By wrote:<br>> 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. <br><br>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.<br><br>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).<br><br>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...<br>-- <br>Brandon Martin<br></div><br></div></body></html>