Question: What is the initialisation value of the pseudo-random sequence generator for non-BL/CE UEs at the start of each subframe?
Option 1: c_init = N_ID_cell
Option 2: c_init = (N_ID_cell << 16) + floor(N_s / 2)
Option 3: c_init = (N_ID_cell << 16) + N_s
Option 4: c_init = (N_ID_cell << 16) + floor(N_s / 2) for EPDCCH and (N_ID_cell << 16) + N_s for SPDCCH
Explanation: According to the text, for non-BL/CE UEs, the pseudo-random sequence generator shall be initialised with c_init = (N_ID_cell << 16) + floor(N_s / 2) at the start of each subframe where N_s is the slot number. However, this value is replaced by (N_ID_cell << 16) + N_s for EPDCCH and (N_ID_cell << 16) + floor(N_s / 2) for SPDCCH. Therefore, option 4 is correct as it considers both cases.