| CPC H04B 7/0456 (2013.01) [H04L 5/0051 (2013.01)] | 20 Claims |
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1. A method for a user equipment (UE), the method comprising:
receiving, at the UE from a base station, an indication of parameter settings of a port selection codebook, the port selection codebook comprising a port selection matrix W1, a combinational coefficient matrix W2, and a frequency basis selection matrix Wf;
based at least in part on the parameter settings, selecting, at the UE:
for the port selection matrix W1, L channel state information reference signal (CSI-RS) ports out of P CSI-RS ports configured for measuring and reporting CSI, wherein L is a first value indicated in the parameter settings;
for the frequency basis selection matrix Wf, Mv frequency basis from a window of N consecutive frequency basis, wherein Mv is a second value indicated in the parameter settings; and
for the combinational coefficient matrix W2, up to beta*L*Mv entries per layer, wherein beta is a third value indicated in the parameter settings and corresponds to a percentage of the L*Mv entries per layer configured by the parameter settings; and
reporting, from the UE to the base station, one or more of the port selection matrix W1, the up to beta*L*Mv entries in the combinational coefficient matrix W2 per layer, and the frequency basis selection matrix Wf.
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