Hello Experts.
Why TDD cannot support TTI bundling?
Because TTI bundling needs 4 consecutive TTIs.
So FDD has less mute and drops due to TTI bundling as compared to TDD.
Few TDD subframe structures can support TTI bundling.
But almost no one uses those frame structures, so no vendor develop it.
Its sply for VoLTE and all TDD operator uses invariably on VoLTE optimisation as it improves the drop / silent calls / mute.