But is it practical in large scale? I know that satellites can be used but in times of war when maybe a hundred drones are operating, how to use satellite?
I found some nice info regarding WGS or any wide band satellite, Because of phased array they WGS satellite can do a spot beam which can focus on a particular area to provide more bandwidth.
This video show and talks about communication and drone feed in real time on WGS and use of spot beam (WGS are GEO by the way)
This video show concept to avoid jamming in WGS network.
yesterday I sent you link which was talking about issue they had with seamless transition from one spot beam to another
"An unmanned military aircraft in mid-August took off from a test facility in North Dakota on a 1,075 nautical mile trip. Its mission was to show whether it could travel seamlessly across spot beams on a satellite without losing contact.
Why is this noteworthy? Military surveillance drones typically communicate via satellites that have wide beam coverage so the aircraft always stays in the same footprint. Newer satellites have multiple high-powered spot beams, each covering narrow geographic areas. The challenge for the unmanned airplane was to switch beams in flight at about the 600 mile-point.
The beam-switching test was organized by unmanned aircraft manufacturer General Atomics Aeronautical Systems and communications satellite operator Intelsat. It took place near the Grand Forks Air Force Base. A MQ-9 Reaper (also known as Predator B) switched between two spot beams on an Intelsat EpicNG high-throughout satellite."