PROGRESSIVE CHANNEL STATE INFORMATION

摘要

Embodiments of system, device, and method configurations for implementing a progressive channel state indicator (CSI) evaluation are disclosed herein. In one example, techniques for increasing the precision of channel feedback information by detecting a best beam index in a progressively scanning grid of beams is deployed in a Long Term Evolution (LTE) network. The use of a progressive CSI technique may be used to improve the robustness of beamforming in network configurations deploying multi-user multiple input multiple output (MU-MIMO) transmission modes.

主权项

1. A method performed by an evolved Node B (eNodeB) for conducting a progressive channel state indicator (CSI) operation, the method comprising:
scanning with a grid of beams, the grid of beams distributed by beamforming in a plurality of beam groups, wherein the grid of beams transmit respective reference signals among a distributed area; and determining, for a particular User Equipment (UE), a highest CSI in the grid of beams from progressively evaluating the respective CSI values produced from scanning with the grid of beams, the determining including:
receiving, from the UE, an indication of a best beam index in response to a strongest beam received at the UE from the grid of beams; andselecting the highest CSI in the grid of beams for the particular UE based on the best beam index.