DEVICES AND METHODS FOR EPDCCH MONITORING IN WIRELESS COMMUNICATION SYSTEMS

摘要

Devices and methods of reducing blind decoding attempts of user equipment (UE) suing carrier aggregation are generally described. The UE may determine at least one subframe in a modification period to monitor for a physical downlink control channel (PDCCH) formed in accordance with a Discontinuous Transmission Downlink Control Information (DTX DCI) format. The DTX DCI format may indicate whether the serving cell is in a DTX or non-DTX state. The UE may determine the DTX state of each serving cell from the DTX DCI format and monitor an enhanced PDCCH of each serving cell in the non-DTX state to provide a scheduling assignment for the UE, without monitoring each serving cell in the DTX state. The UE may receive higher layer signaling that indicates a repetition period and subframe offset for DTX DCI format transmissions or a bitmap of the DTX DCI format transmissions for subframes within each modification period.

主权项

1. User equipment (UE) comprising:
a transceiver configured to transmit and receive signals from a plurality of serving cells; and processing circuitry configured to:
determine at least one subframe to monitor for a physical downlink control channel (PDCCH) formed in accordance with a first Downlink Control Information (DCI) format, the first DCI format indicating a transmission state of the serving cells;configure the transceiver to receive the at least one subframe containing the first DCI format;determine the transmission state of the serving cells based on the received first DCI format; andconfigure the transceiver to monitor at least one of the PDCCH and an enhanced PDCCH (EPDCCH) of the serving cells determined to be in a first transmission state and refrain from monitoring the at least one of the PDCCH and EPDCCH of serving cells determined from the first DCI format to be in a second transmission state, the at least one of the PDCCH and EPDCCH of serving cells to be in the first transmission state configured to provide a scheduling assignments for the UE.