/*! \brief Compute UL ACK subframe from DL subframe. This is used to retrieve corresponding DLSCH HARQ pid at eNB upon reception of ACK/NAK information on PUCCH/PUSCH. Derived from Table 10.1-1 in 36.213 (p. 69 in version 8.6)
@param frame_parms Pointer to DL frame parameter descriptor
LOG_D(PHY,"[UE %d] frame %d, subframe %d: received DCI %d with RNTI=%x (C-RNTI:%x, CBA_RNTI %x) and format %d!\n",ue->Mod_id,frame_rx,subframe_rx,i,dci_alloc_rx[i].rnti,