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 ?
Based on RI indicator eNodB will take decision. i.e if eNodB in tm4 mode and using spatial multiplexing and current TTI UE reported RI=1 then it will change transmitting mode spatial multiplexing to transmit diversity.
Is TTI bundling enabled by default or on a specific condition enabled ?