Method for operating user equipment in wireless communication system, and device therefor
Provided are a method for operating user equipment (UE) having multiple serving cells set therefor in a wireless communication system and UE using the method. The method comprises: receiving a higher-level signal indicating a mapping between the values of the serving cell index (ServingCellID) of a serving cell and a carrier index field (CIF); and identifying the serving cell on the basis of the higher-level signal.
1. A method for operating a base station (BS) in a wireless communication system, the method comprising:
transmitting a higher layer signal indicating a carrier index field (CIF) value, wherein the CIF value is used in a scheduling cell to indicate scheduling information applicable for a serving cell; and
transmitting downlink control information (DCI) through a physical downlink control channel (PDCCH) for the serving cell based on the CIF value indicated by the higher layer signal,
wherein a number of candidates of the CIF value is smaller than a number of candidates of a serving cell index of the serving cell.
2. The method of claim 1 , wherein a carrier index field (CIF) included in the DCI comprises 3 bits.
3. The method of claim 1 , wherein the higher layer signal is a radio resource control (RRC) message.
4. The method of claim 1 , wherein the scheduling information is a grant or assignment applicable for the serving cell.
5. A method for operating a user equipment (UE) in a wireless communication system, the method comprising:
receiving a higher layer signal indicating a carrier index field (CIF) value, wherein the CIF value is used in a scheduling cell to indicate scheduling information applicable for a serving cell; and
receiving downlink control information (DCI) through a physical downlink control channel (PDCCH) for the serving cell based on the CIF value indicated by the higher layer signal,
wherein a number of candidates of the CIF value is smaller than a number of candidates of a serving cell index of the serving cell.
6. The method of claim 5 , wherein a carrier index field (CIF) included in the DCI comprises 3 bits.
7. The method of claim 5 , wherein the higher layer signal is a radio resource control (RRC) message.
8. The method of claim 5 , wherein the scheduling information is a grant or assignment applicable for the serving cell.
9. A user equipment (UE) in a wireless communication system, the UE comprising:
a transceiver; and
a processor operatively connected to the transceiver and adapted to:
receive a higher layer signal indicating a carrier index field (CIF) value, wherein the CIF value is used in a scheduling cell to indicate scheduling information applicable for a serving cell; and
receive downlink control information (DCI) through a physical downlink control channel (PDCCH) for the serving cell based on the CIF value indicated by the higher layer signal,
wherein a number of candidates of the CIF value is smaller than a number of candidates of a serving cell index of the serving cell.
10. The UE of claim 9 , wherein a carrier index field (CIF) included in the DCI comprises 3 bits.
11. The UE of claim 9 , wherein the higher layer signal is a radio resource control (RRC) message.
12. The UE of claim 9 , wherein the scheduling information is a grant or assignment applicable for the serving cell.