Method for reporting channel state information, user equipment and base station

1. A method for reporting channel state information in a Coordinated multipoint (CoMP) scheme, comprising:

receiving, by a user equipment, a Radio Resource Control (RRC) signaling transmitted by a base station, the RRC signaling comprising measurement set information associated with identification information, and when the identification information is two bits, the RRC signaling comprising measurement set information associated with identification information “01”, “10” and “11” respectively, the RRC signaling is used to change the association between measurement set information with the identification information “01”, “10” and “11” when report of information needed to be changed based on a reporting signal;

receiving, by the user equipment, Downlink Control Information (DCI) transmitted by the base station, the DCI comprising identification information for triggering an aperiodic report of channel state information;

determining a measurement set to which the aperiodic report of the channel state information corresponds according to the identification information and the measurement set information associated with identification information, the measurement set configured to allow information on one or more transmission points of the user equipment from among all coordinated transmission points which correspond to the user equipment including a primary transmission point and a secondary transmission point within one same base station; and

reporting corresponding channel state information to the base station according to the measurement set.

2. The method according to claim 1 , wherein when the identification information is one bit, the determining a measurement set to which the report of the channel state information corresponds according to the identification information comprises:

configuring one or more transmission points from among all the transmission points to which the user equipment corresponds into the measurement set by a higher layer signaling.

3. The method according to claim 1 , further comprising: receiving a second RRC signaling transmitted by the base station, the second RRC signaling comprising information to configure the measurement set as information on one or more transmission points from among all the transmission points to which the user equipment corresponds.

4. User equipment in a Coordinated multipoint (CoMP) scheme, comprising:

a signaling receiver, configured to receive a Radio Resource Control (RRC) signaling transmitted by a base station, the RRC signaling comprising measurement set information associated with identification information, and when the identification information is two bits, the RRC signaling comprising measurement set information associated with identification information “01”, “10” and “11” respectively, the RRC signaling is used to change the association between measurement set information with the identification information “01”, “10” and “11” when report of information needed to be changed based on a reporting signal;

the signaling receiver is further configured to receive Downlink Control Information (DCI) transmitted by the base station, the DCI comprising identification information for triggering an aperiodic report of channel state information;

a processing circuit configured to determine a measurement set to which the aperiodic report of the channel state information corresponds according to the identification information and the measurement set information associated with identification information, the measurement set configured to allow information on one or more transmission points of the user equipment from among all coordinated transmission points which correspond to the user equipment including a primary transmission point and a secondary transmission point within one same base station; and

a transmitter configured to transmit corresponding channel state information to the base station according to the measurement set.

5. The user equipment according to claim 4 , wherein when the identification information is one bit, the processing circuit is configured to configure one or more transmission points from among all the transmission points to which the user equipment corresponds into the measurement set by a higher layer signaling.

6. The user equipment according to claim 4 , wherein the signaling receiver is further configured to receive a second RRC signaling transmitted by the base station, the second RRC signaling comprising information to configure the measurement set as information on one or more transmission points from among all the transmission points to which the user equipment corresponds.

7. A base station in a Coordinated multipoint (CoMP) scheme, comprising:

a signaling transmitter, configured to transmit Radio Resource Control (RRC) signaling to a user equipment, the RRC signaling comprising measurement set information associated with identification information, and when the identification information is two bits, the RRC signaling comprising measurement set information associated with identification information “01”, “10” and “11” respectively, the RRC signaling is used to change the association between measurement set information with the identification information “01”, “10” and “11” when report of information needed to be changed based on a reporting signal;

the signaling transmitter is further configured to transmit Downlink Control Information (DCI) to the user equipment, the DCI comprising identification information for triggering an aperiodic report of channel state information, the identification information indicates a measurement set configured to allow information on one or more transmission points of the user equipment from among all coordinated transmission points which correspond to the user equipment including a primary transmission point and a secondary transmission point within one same base station; and

an information receiver, configured to receive channel state information reported by the user equipment, the channel state information being obtained by the user equipment according to the measurement set determined on the basis of the identification information and the measurement set information associated with identification information.

8. The base station according to claim 7 , wherein the signaling transmitter is further configured to transmit a second RRC signaling to the user equipment, the second RRC signaling comprising information to configure the measurement set as information on one or more transmission points from among all the transmission points to which the user equipment corresponds.

9. User equipment in a Coordinated multipoint (CoMP) scheme, comprising:

a signaling receiver, configured to receive a Radio Resource Control (RRC) signaling transmitted by a base station, the RRC signaling comprising measurement set information associated with identification information, and when the identification information is two bits, the RRC signaling comprising measurement set information associated with identification information “01”, “10” and “11” respectively, the RRC signaling is used to change the association between measurement set information with the identification information “01,” “10” and “11” when report of information needed to be changed based on a reporting signal;

the signaling receiver is further configured to receive Downlink Control Information (DCI) transmitted by the base station, the DCI comprising identification information for triggering an aperiodic report of channel state information; and

a processing circuit configured to:

determine a measurement set to which the aperiodic report of the channel state information corresponds according to the identification information and the measurement set information associated with identification information, the measurement set configured to allow information on one or more transmission points of the user equipment from among all coordinated transmission points which correspond to the user equipment including a primary transmission point and a secondary transmission point within one same base station; and

report corresponding channel state information to the base station according to the measurement set.

10. The user equipment according to claim 9 , wherein the signaling receiver is further configured to receive a second RRC signaling transmitted by the base station, the second RRC signaling comprising information to configure the measurement set as information on one or more transmission points from among all the transmission points to which the user equipment corresponds.

11. A base station in a Coordinated multipoint (CoMP) scheme, comprising:

a transmitter;

a receiver; and

a processing circuitry to provide Radio Resource Control (RRC) signaling, the RRC signaling comprising measurement set information associated with identification information, and when the identification information is two bits, the RRC signaling comprising measurement set information associated with identification information “01”, “10” and “11” respectively, the RRC signaling is used to change the association between measurement set information with the identification information “01,” “10” and “11” when report of information needed to be changed based on a reporting signal,

the transmitter configured to transmit the RRC signaling provided by the processing circuitry to a user equipment,

the processing circuitry further configured to provide identification information for triggering an aperiodic report of channel state information, the identification information indicates a measurement set configured to allow information on one or more transmission points of the user equipment from among all coordinated transmission points which correspond to the user equipment including a primary transmission point and a secondary transmission point within one same base station,

the transmitter further configured to transmit a signal comprising the identification information provided by the processing circuitry; and

the receiver configured to receive channel state information reported by the user equipment, the channel state information being obtained by the user equipment according to a measurement set determined on the basis of the identification information and the measurement set information associated with identification information.

12. The base station according to claim 11 , wherein the processing circuitry is further configured to instruct the transmitter to transmit a second RRC signaling to the user equipment, the second RRC signaling comprising information to configure the measurement set as information on one or more transmission points from among all the transmission points to which the user equipment corresponds.