removing shower screen from tiles

I'm thinking about replacing the shower wall tiles.
The small shower screen (looks a few years old/patterned glass) is sitting on (attached) a raised tiled step-over section.
The side edge is attached to the shower wall tiles, where they end.
There is a silicon bead/strip at these edges, but I don't know how the metal screen strips/edges are attached to the tiles.

The opposite end of the shower screen has a shower curtain metal rod, which is attached to the wall.

I would like to be able to remove the screen and rod, then re-install it, once the new tiles are in place.
Any ideas how to remove it?

There will be a receiver, a U shaped channel that is fitted to the wall that the screen sits in.
There may be some small screws or pop rivets holding the screen into the receiver. Remove these cut the silicone that holds the screen at the bottom and remove the screen.
There will be screws inside the receiver holding it to the wall, remove these cut the silicone and pull it off.