gNB can intiate RACH procedure for PDCCH order. But If UE is configured with NUL and SUL , then How UE comes to know for which UL carrier it has to initiate PDCCH order.
if cross carrier scheduling is enabled then primary cell can schedule the secondary ENB, then will UE monitor the PDCCH of secondary cell? if yes Why it is required?
UE used NDI bit to decide the transmission is new or re transmission .When UE ignores this bit and continue.
Pcell will be expecting the HARQ feedback of Scell but UE failed to decode the Scell PDCCH . This case UE doesn't send the CA HARQ and uses different PUCCH format But PCELL will be expecting different format to receive the feedback. How to overcome this issue.
