Patent ID: 9615358
Date: 2017-04-04
CPC Classifications: H04J,H04L,H04W

Claim:
1. A method implemented in a base station used in a wireless communications system, the method comprising: transmitting a first uplink (UL)-downlink (DL) configuration indicating a first downlink (DL) association set for long-term configuration of a first type of user equipment (UE); transmitting a reference configuration for short-term configuration of a second type of user equipment (UE), the reference configuration corresponding to a second downlink (DL) association set; receiving from the second type of user equipment a hybrid automatic repeat request-acknowledgement (HARQ-ACK) signal according to a third DL association set determined by the first uplink (UL)-downlink (DL) configuration and the reference configuration; performing physical uplink control channel (PUCCH) resource allocation for the third DL association set by using a specified PUCCH offset, the specified PUCCH offset being user-specific and indicated by radio resource control (RRC)-signaling; and configuring an enhanced physical downlink control channel (EPDCCH) for DL transmission in flexible subframes for the second type of user equipment, wherein a PUCCH associated with an EPDCCH set is reserved for subframes with a higher probability of being used as DL subframes, followed by a PUCCH for subframes with a lower probability of being used as DL subframes, and the third DL association set includes the PUCCH resource allocation is performed independently for the first subset, the second subset, and the third subset.