CONFIGURATION OF COORDINATED MULTIPOINT TRANSMISSION HYPOTHESES FOR CHANNEL STATE INFORMATION REPORTING

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 for improving link adaptation in a wireless communications system, the method performed at a User Equipment, UE, and comprising:
receiving a configuration message from an eNodeB, wherein the configuration message specifies at least one Channel State Information, CSI, report specifying 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; estimating interference according to the specified interference hypothesis, and estimating properties of the effective channel; determining at least one CSI report based on the interference estimation and the estimated properties of the effective channel; and transmitting the at least one CSI report to the eNodeB.