Patent ID: 9712308
Date: 2017-07-18
CPC Classifications: H04L,H04W

Claim:
1. An inter-site carrier aggregation (CA) method performed in a terminal interworking with a first base station and a second base station, the method comprising: receiving physical downlink control channels (PDCCHs) or enhanced physical downlink control channels (EPDCCHs) for scheduling physical downlink shared channels (PDSCHs) of cells constituting a primary cell group (PCG) from the first base station, the PCG comprising a first primary cell and one or more secondary cells; receiving PDCCHs or EPDCCHs for scheduling PDSCHs of cells constituting a secondary cell group (SCG) from the second base station, the SCG comprising a second primary cell and one or more secondary cells; receiving the PDSCHs by using the cells constituting the PCG; receiving the PDSCHs by using the cells constituting the SCG; transmitting physical uplink control channels (PUCCHs) including acknowledgment information for the PDSCHs received by using the cells constituting the PCG through the first primary cell; and transmitting PUCCHs including acknowledgement information for the PDSCHs received by using the cells constituting the SCG through the second primary cell.