I played around with my smartphone a bit to get an idea of use cases and how those would affect strictly-LOS mobile communications.
When users are looking at their phones, in most situations the top 1inch would have LOS of the "sky" where cell towers would normally be located, for up to ~320 degrees - exceptions are the users' body and other people and obstacles; all of which will vary LOS quickly depending on movement When users are calling, phone against the head, in most situations the top rear 1inch would have LOS to 50% of the "sky" at most, again with the exception of other people and obstacles. In most cases when this is done, bandwidth usage is audio-only/minimal. A few small upward-directed 28Ghz+ panels, say 6-8, located at the top of the phone and designed to allow combined near-omnidirectional coverage, could communicate with 28GHz+ BSs often located straight up, say at conferences and large events. This would allow a huge offload from the standard cell network. but protocols would need to reliably switch between those systems within milliseconds. It's doable in most cases but would require some careful design and implementation, and likely fiber with a custom low-latency-assured protocol between the standard cell basestations and the 28Ghz+ BSs. On Sun, Jul 24, 2016 at 10:57 AM, Chuck McCown <[email protected]> wrote: > Yeah, I cannot see frequencies on hand held devices going too much higher > than they are now. Moreover the antenna’s gain will get killed by hands. > > *From:* Colin Stanners <[email protected]> > *Sent:* Sunday, July 24, 2016 9:45 AM > *To:* [email protected] > *Subject:* Re: [AFMUG] Telecom industry hails FCC move to open 5G > spectrum | Network World > > 28Ghz and higher? They'll need radios with very fast transitions between > those and NLOS-capable frequencies so as to keep stable communications when > hundreds of subscribers are walking around each other and LOS is extremely > variable. > > On Sun, Jul 24, 2016 at 10:06 AM, Jaime Solorza <[email protected] > > wrote: > >> >> http://www.networkworld.com/article/3095832/mobile-wireless/telecom-industry-hails-fcc-move-to-open-5g-spectrum.html?google_editors_picks=true >> > >
