According to this page navigating between highlighted usages:
(source: jetbrains.com)
can be done using F3 or Ctrl+
Install the Identifier Highlighter plugin.
It's a must have plugin for IntelliJ, and is always the very first thing I do to a fresh IDEA installation. I can't understand why this hasn't become part of core IntelliJ yet.
F3 and Shift+F3 work just fine here. Highlighted usages do not differ from search occurrences in this context.
I've found on mac that Ctrl + G works for this purpose well. It actually selects the occurrence for you, which is fine for me. Shift + Ctrl + G for the previous occurrence.
On Windows/Linus this should be Alt + J and Shift + Alt + J respectively.
For linux key mapping setup in IDEA go to next occurrence are Ctrl+L. Alt+J is for selection for next occurrence.