METHODS AND APPARATUSES FOR CHANNEL MEASUREMENT AND FEEDBACK OF MULTI-DIMENSIONAL ANTENNA ARRAY

摘要

Embodiments of the present invention generally relate to methods and apparatuses for the channel measurement and feedback of a multi-dimensional antenna array. Specifically, according to embodiments of the present invention, the primary inventive idea is to allow a base station equipped with a multi-dimensional antenna array to configure more than one class of CSI-RS, wherein each class of CSI-RS is for use in a channel measurement at the UE for a different dimension of the multi-dimensional antenna array. The base station then transmits the generated configuration information to the UE so that the UE may perform channel measurement specific to different dimensions, for example, by selecting different codebooks for the channel measurement for different dimensions. In this way, it is possible to increase the channel measurement precision of the multi-dimensional antenna array, reduce the measurement feedback overhead and improve the system performance.