Method and user equipment for receiving downlink signal

A user equipment (UE) for receiving downlink signals, the UE comprising:

• a radio frequency (RF) unit;
• and
• a processor configured to control the RF unit, the processor configured to:
• control the RF unit to receive semi-persistent scheduling (SPS) configuration information on N SPS resource configurations, where N is an integer larger than 1;
• control the RF unit to receive an SPS command to activate or deactivate each of multiple SPS resource configurations among the N SPS resource configurations;
• control the RF unit to transmit SPS status information on the N SPS resource configurations in response to the SPS command;
• and
• control the RF unit to perform downlink reception or uplink transmission in an SPS resource corresponding to an SPS resource configuration among activated SPS resource configurations,
• wherein the SPS command includes information indicating each of the multiple SPS resource configurations and information indicating whether a corresponding SPS resource configuration is activated or deactivated,
• wherein the SPS status information includes information on whether the N SPS resource configurations are active or not in the UE, respectively, and
• wherein the SPS status information is transmitted on a first SPS resource of a union of the activated SPS resource configurations.