When UE faces poor UL channel quality then ENB can enable this , TTI bundling is sending same TB in multiple TTI. This enables recovering data without delaying . Here delaying means HARQ delay.
Will ENB sends 4 ack/nack or how this will be handled?
In normal case HARQ re- transmission will be 4 in UL, But What should be the ideal value if TTI bundling is enabled?
Is TTI bundling enabled by default or on a specific condition enabled ?
On what parameter basis, eNodeB changes its current transmission mode to different transmission mode for an UE ?
What parameters are considered to take decision on transmission mode ? Does the eNodeB inform to UE about the selected TM ?