Downlink signal receiving method and user equipment, and downlink signal transmitting method and base station
AssigneeLG Electronics Inc.
InventorsEunsun Kim, Suckchel Yang, Kijun Kim
Life of this patent
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Abstract
In a control region of a first subframe, first downlink control information (DCI) for a second subframe may be transmitted to a user equipment. The user equipment monitors DCI in a control region of the second subframe. The user equipment operates on the basis of the second DCI if the second DCI for the second subframe is detected in the control region of the second subframe, and can receive downlink data or transmit uplink data in a data area of the second subframe on the basis of the first DCI if the second DCI is not detected.
Claims12
A method of receiving a downlink (DL) signal by a user equipment (UE), the method comprising:
- receiving, in a control region of a first time interval, first DL control information (DCI) that schedules transmissions in a second time interval;
- monitoring, in a control region of the second time interval, for a second DCI that schedules transmissions in the second time interval;
- and
- in response to detecting the second DCI in the control region of the second time interval, performing a first operation in the second time interval based on the detected second DCI;
- and
- in response to not detecting the second DCI in the control region of the second time interval, performing a second operation in the second time interval based on the first DCI, wherein the first and second operations are different, wherein the second DCI includes information for informing that the first DCI is valid for scheduling a third time interval after the second time interval.
A user equipment (UE) for receiving a downlink (DL) signal, the UE comprising:
- a radio frequency (RF) module including a transceiver, and a processor configured to control the RF module,
- wherein the processor:
- controls the RF module to receive, in a control region of a first time interval, first DL control information (DCI) that schedules transmissions in a second time interval;
- monitors, in a control region of the second time interval, a second DCI that schedules transmissions in the second time interval;
- in response to detecting the second DCI in the control region of the second time interval, controls the RF module to perform a first operation,
- based on the second DCI;
- and
- in response to not detecting the second DCI in the control region of the second time interval, controls the RF module to perform a second operation in the second time interval based on the first DCI,
- wherein the first and second operations are different,
- wherein the second DCI includes information for informing that the first DCI is valid for scheduling a third time interval after the second time interval.
A base station (BS) for transmitting a downlink (DL) signal, the BS comprising:
- a radio frequency (RF) module;
- and
- a processor configured to control the RF module,
- wherein the processor:
- controls the RF module to transmit, to a user equipment (UE) in a control region of a first time interval, first DL control information (DCI) that schedules transmissions in a second time interval;
- determine whether to transmit, to the UE in a control region of the second time interval, a second DCI, wherein the second DCI schedules transmissions in the second time interval,
- in response to determining to transmit the second DCI to the UE in the control region of the second time interval, controls the RF module to:
- transmit the second DCI to the UE in the control region of the second time interval, and
- perform a first operation in the second time interval, wherein the first operation is based on the second DCI;
- and
- in response to determining to not transmit the second DCI to the UE in the control region of the second time interval, controls the RF module to perform a second operation in the second time interval based on the first DCI, wherein the first and second operations are different,
- wherein the second DCI includes information for informing that the first DCI is valid for scheduling a third time interval after the second time interval.
Dependencies are inferred from the claim text.