Method and device for channel measurement and feedback of multi-dimensional antenna array

Abstract

An embodiment of the invention relates to a method and a device for channel measurement and feedback of a multi-dimensional antenna array as a whole. Specifically, according to the embodiment, the technical scheme includes that a base station equipped with the multi-dimensional antenna array is allowed to be equipped with more than one kind of CSI-RS, and each kind of CSI-RS is measured by channels in different dimensions for the antenna array at user equipment (UE). The base station then sends generated configuration information to the UE, therefore the UE is allowed to execute channel measurement specific to different dimensions, for example, the UE selects different codebooks for channel measurement in different dimensions, the channel measurement accuracy of the multi-dimensional antenna array can be improved, the measurement feedback expense can be reduced, and system performances are further improved. The related method and the device on the base station side and the UE side are described in detail.

Description

technical field [0001] Embodiments of the present invention generally relate to the field of wireless communication, and more particularly, to methods and devices for channel measurement and feedback of multi-dimensional antenna arrays. Background technique [0002] Currently, the standards and systems of the Long Term Evolution (LTE) / Long Term Evolution Advanced (LTE-A) of the Third Generation Partnership Project (3GPP) (for example, the LTE-A R10 system) usually target one-dimensional antenna arrays (such as uniform linear array ) to define and design. In such standards and systems, usually only the azimuth angles of departure and arrival of antenna signals on the horizontal plane are considered. In other words, in existing solutions, the design of system channel measurement and feedback is only based on the assumption of a single-dimensional antenna array, and only the horizontal signal propagation directivity is taken into consideration. [0003] However, in a practica...

AI Technical Summary

Problems solved by technology

However, the current 3GPP LTE / LTE-A standard only supports the CSI feedback strategy of a single-dimensional antenna array, that is, returning the PMI codeword for the single-dimensional antenna array CSI in each channel feedback subframe

The current channel measurement and feedback standards of the system cannot feed back multi-dimensional channel state information using multi-dimensional antenna arrays to the base station equipment

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