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$ASTS satellite #BlueWalker3 in orbit testing is ongoing.
It is the cutting edge of 5g Non-Terrestrial-Network NTN, Direct-To-Handset, DTH, technology.
It has a lot of interesting design choices.
Selected, in tech, standard and regulatory terms as it was purpose built.
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It is the cutting edge of 5g Non-Terrestrial-Network NTN, Direct-To-Handset, DTH, technology.
It has a lot of interesting design choices.
Selected, in tech, standard and regulatory terms as it was purpose built.
1/n
Previous schematic of the transparent satellite AST uses is one of two NTN DTH architectures supported by the global 3GPP 5g standard.
The alternative AST opted out of has parts, or all, of the base-station placed onboard the satellite, whereas ASTs is on earth.
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The alternative AST opted out of has parts, or all, of the base-station placed onboard the satellite, whereas ASTs is on earth.
2/n
Starlink DTH is an add-on functionality to an existing architecture built for another purpose. It uses the other architecture.
This has several implications.
For handoff and multi connectivity.
But importantly ..
3/n
This has several implications.
For handoff and multi connectivity.
But importantly ..
3/n
