Method and apparatus for controlling SCell state
AssigneeKt Corporation
InventorSung-pyo Hong
Life of this patent
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Abstract
Provided is a method and an apparatus for for changing or controlling a state of a secondary cell in carrier aggregation. The method includes receiving secondary cell (SCell) state indication information indicating a state for a SCell from a base station through an RRC message or an MAC control element, causing a state of the SCell to transition into a dormant state when the SCell state indication information indicates the dormant state, and transmitting channel state information reporting for the SCell in the dormant state according to an dormant state CQI report period parameter set separately from an activation state CQI report period parameter.
Claims16
An operation method of a wireless device, the method comprising:
- receiving, by the wireless device, secondary cell (SCell) state information for indicating a first state of a SCell through a radio resource control (RRC) message or a medium access control (MAC) control element;
- and
- transitioning, by the wireless device, the SCell into the first state based on the received SCell state information,
- wherein, based on the first state of the SCell:
- reporting, by the wireless device, channel state information for the SCell,
- wherein transmissions of i) a sounding reference signal (SRS) on the SCell, ii) an uplink shared channel (UL-SCH) on the SCell, iii) a random access channel (RACH) on the SCell, and iv) a physical uplink control channel (PUCCH) on the SCell, are not performed by the wireless device, and
- wherein a monitoring of a physical downlink control channel (PDCCH) on the SCell is not performed by the wireless device.
A device, comprising:
- a transmitter;
- a receiver;
- and
- a controller which controls the transmitter and the receiver thereby performing operations including:
- receiving secondary cell (SCell) state information for indicating a first state of a SCell through a radio resource control (RRC) message or a medium access control (MAC) control element;
- and
- transitioning the SCell into the first state based on the received SCell state information,
- wherein, based on the first state of SCell:
- reporting channel state information for the SCell,
- wherein transmissions of i) a sounding reference signal (SRS) on the SCell, ii) an uplink shared channel (UL-SCH) on the SCell, iii) a random access channel (RACH) on the SCell, and iv) a physical uplink control channel (PUCCH) on the SCell, are not performed, and
- wherein a monitoring of a physical downlink control channel (PDCCH) on the SCell is not performed.
A base station, comprising:
- a transmitter;
- a receiver;
- and
- a controller which controls the transmitter and the receiver thereby performing operations including:
- transitioning a SCell into a first state;
- and
- transmitting secondary cell (SCell) state information for indicating the first state of the SCell through a radio resource control (RRC) message or a medium access control (MAC) control element,
- wherein, based on the first state of the SCell:
- receiving channel state information for the SCell,
- wherein receptions of i) a sounding reference signal (SRS) on the SCell, ii) an uplink shared channel (UL-SCH) on the SCell, iii) a random access channel (RACH) on the SCell, and iv) a physical uplink control channel (PUCCH) on the SCell, are not performed.
Dependencies are inferred from the claim text.