Then UE starts to feedback the serving cell with the measurement set which is the RSRP measurements received from all cells in the network. Serving cell selects a set of cells with highest RSRP in measurement set as a CCS. Similarly, a set of cells with highest RSRP in CCS will be then selected by the serving cell as the CTP. After the CTP selection is finalized, serving cell
will request all cells in the CTP to start transmitting packets to the UE