It's called grid trading. I do it with a bot on eth_btc. And I can tell you that in two sentences, or three if you count this one.
You can call it whatever you want, including uncle bob, if you chose not to explain specifics, which had included applying practice to theory and also responding to issues/questions raised by someone else on a forum.
And, by the way, you are welcome.

Fine, if you want specifics: I use a Classical 1, 4, 9 MacNeill-Schumann hybrid for the main engine, sinewave recursion on the re-entry and a modified Gauss to calculate relative oscillation weight to maximise profits on the downside. I didn't bother stating this in my previous post because I knew you wouldn't understand it. Still 3 sentences though.