| 摘要 |
A system and method for providing an eNodeB with the flexibility to configure a Channel State Information (CSI) report to match a specific Coordinated Multipoint (CoMP) transmission hypothesis, which is a candidate for a downlink transmission to a User Equipment (UE) is disclosed. A UE receives, from the eNodeB, a configuration message that specifies a CSI report. The CSI report is specified by a particular interference hypothesis and a particular desired signal hypothesis corresponding to data transmission over at least one effective channel characterized by a specific reference signal. The UE estimates interference according to the interference hypothesis, and/or estimates at least one effective channel by performing measurements on the specific reference signal, and determines a CSI report based on the interference estimation and on the estimated effective channel. The UE also transmits the CSI report to the eNodeB. |
| 主权项 |
1. A method performed at a User Equipment, UE, comprising:
receiving at least one radio resource control (RRC) configuration message from an eNodeB, wherein the at least one configuration message specifies a plurality of Channel State Information (CSI) reports each matching a different coordinated multipoint (CoMP) transmission hypothesis which is a candidate for downlink transmission to the UE, wherein each CoMP transmission hypothesis corresponds to a transmission scheme selected from a group consisting of a dynamic point blanking scheme, a dynamic point selection scheme, a coordinated beamforming scheme, and a joint transmission scheme, and wherein each of the CSI reports specifies an interference hypothesis and a desired signal hypothesis corresponding to a hypothetical data transmission over an effective channel that is characterized by a reference signal, the interference hypothesis and the desired signal hypothesis being specified, at least in part, by a Channel State Information-Interference Measurement, CSI-IM, configuration, and a Channel State Information-Reference Signal, CSI-RS configuration, respectively; and for each of the specified CSI reports: estimating interference according to the specified interference hypothesis, and estimating properties of the effective channel; determining a CSI report based on the interference estimation and the estimated properties of the effective channel; and transmitting the CSI report to the eNodeB. |
