Patent ID: 11950188
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 6:
7. A wireless communication method of a receiver, the wireless communication method comprising:
performing a first determination of whether to decode a control channel of a current transmission time interval (TTI) based on control channel information of a previous TTI;
decoding the control channel of the current TTI based on a result of the first determination;
performing a second determination of whether a data channel is included in the current TTI based on a result of the decoding;
performing a third determination of whether to deactivate a communication interface configured to process a received signal based on a result of the second determination;
receiving beamforming information about whether a beamforming characteristic applied to the previous TTI is same as a beamforming characteristic applied to the current TTI from a transmitter; and
requesting the transmitter to transmit a control channel demodulation reference signal (DMRS) mapped to resources throughout an entire band,
wherein the beamforming information is provided to the receiver from the transmitter through radio resource control (RRC) signaling or downlink control information (DCI) transmission,
wherein the first determination comprises:
checking whether resource mapping of a control channel DMRS of the previous TTI is same as resource mapping of a control channel DMRS of the current TTI; and
determining whether to reuse the control channel information of the previous TTI based on the beamforming information and a result of the checking,

wherein the checking is performed based on whether the control channel DMRS of the previous TTI and the control channel DMRS of the current TTI are mapped to resources throughout the entire band, and
wherein, based on the beamforming characteristic applied to the previous TTI being same as the beamforming characteristic applied to the current TTI and the resource mapping of the control channel DMRS of the previous TTI being same as the resource mapping of the control channel DMRS of the current TTI, whether to reuse the control channel information of the previous TTI is determined based on whether channel characteristic maintenance time has ended.