On 1/23/23 3:14 PM, Eric Kuhnke wrote:
The original and traditional high-cost way of how this is done for
MEO/LEO is exemplified by an o3b terminal, which has two active
motorized tracking antennas. The antenna presently in use for the
satellite that is overhead follows it until it's descending towards
the horizon, while at the same time the second antenna aims itself at
where the next 'rising' satellite is predicted to appear at the
opposite horizon, and forms a link to it. Make-before-break. If anyone
has seen photographs in their marketing material/videos of the Oneweb
beta test earth stations in Alaska they are operating using the same
general concept.
Oneweb has clearly positioned their market focus for telecoms and ISPs
and large enterprise end users, because their CPE equipment is
considerably larger, expensive and more power hungry. The beta test
sites I've seen installed on top of a telecom equipment shelter occupy
an area approximately 8 feet long x 4 feet wide including radomes and
mounting.
I'm trying to understand this so sorry if this comes off dumb. So does
the base station mediate all handoffs where the CPE is told when/what to
handoff? Or does the CPE have some part in it (other than receiving the
handoff)? Does the CPE accept control traffic (L2?) from any bird? Are
there cases where the CPE needs to de-dup packets due to handoffs?
This is pretty fascinating stuff.
Mike
