MIMO: The problem no one is talking about
So, as a student of Electrical Engineering, I have to think about things like this occasionally and was wondering if anyone else had any ideas along these lines.
Way back in the 70's and 80's when the FCC started setting aside spectrum for cellular use, all the wireless bands were split in half and 50% of your spectrum was rated for "download" and 50% of the spectrum was rated for "upload." On top of that, the upload and download blocks that were "paired" together for cellular use are not even immediately adjacent to each other on the spectrum chart in most cases.
That makes sense in a voice-only environment where people doe almost as much talking as they do listening, but in a high data environment, download bandwidth need outstrips ...
(continues)
Way back in the 70's and 80's when the FCC started setting aside spectrum for cellular use, all the wireless bands were split in half and 50% of your spectrum was rated for "download" and 50% of the spectrum was rated for "upload." On top of that, the upload and download blocks that were "paired" together for cellular use are not even immediately adjacent to each other on the spectrum chart in most cases.
That makes sense in a voice-only environment where people doe almost as much talking as they do listening, but in a high data environment, download bandwidth need outstrips ...
(continues)
...
The telecom industry dealt with this issue years ago. If you have or had a "DSL" line in your home you most likely have a "ADSL" line which stands for 'Asynchronous Digital Subscriber Line' this has a much larger portion of the bandwidth set aside for download than it does for upload. The real problem is not really the bandwidth it is the utilization of the bandwidth. Even if you are downloading video you are still not downloading 100% of the time. A packet based network (IP, Ethernet, etc...) is much more efficient because data is carried in packets so when you are not sending or receiving a packet the 'backbone' bandwidth is free for someone else’s packets. I am hoping the 4th generation network (LTE) is a packet based network, I have...
(continues)
(continues)
...
The first thing you learn when you go to VZW's LTE hardware developer site for the 700 MHz C-Block is that all devices MUST operate on IPV6 in order to become certified. LTE is an all-IP infrastructure (which causes problems for SMS service- but I digress...)
Also, a good friend of mine has been working upper level DSL tech support for over 6 years now, and I'm well aware of how ADSL operates. The issue is taht with wires, the owner/operator can decide how much cable to devote to pload and how much to devote to download (as they should be), but in wireless, the FCC makes those decisions, which is the problem I'm speaking towards!
https://www.phonescoop.com/articles/article.php?a=18 ... »
The best solution as I see it would be fo...
(continues)
Also, a good friend of mine has been working upper level DSL tech support for over 6 years now, and I'm well aware of how ADSL operates. The issue is taht with wires, the owner/operator can decide how much cable to devote to pload and how much to devote to download (as they should be), but in wireless, the FCC makes those decisions, which is the problem I'm speaking towards!
https://www.phonescoop.com/articles/article.php?a=18 ... »
The best solution as I see it would be fo...
(continues)
...
