Patent ID: 8750237

Claim:
A method of indicating a Channel State Information (CSI) feedback, comprising: a base station configuring a User Equipment (UE) with a CSI feedback scheme; and the base station transmitting the configured CSI feedback scheme to the UE in configuration signaling to indicate the CSI feedback scheme to be adopted by the UE in aperiodic CSI reporting, wherein the base station configuring the UE with the CSI feedback scheme further comprises: the base station configuring the UE with the corresponding CSI feedback scheme dependent upon a carrier configuration condition of the UE, wherein the CSI feedback scheme configured for the UE by the base station comprises a joint feedback scheme and a second independent feedback scheme; and the joint feedback scheme is to put CSI of all the activated Downlink Component Carriers (DL CCs) of the UE over a Physical Uplink Shared Channel (PUSCH) scheduled by an Uplink Grant (UL grant) for feedback; and the second independent feedback scheme is to put CSI, of a DL CC having a system-level paired linking relationship with an Uplink Component Carrier (UL CC) scheduled by a UL grant, over a PUSCH scheduled by the UL grant for feedback.