CPC H04B 7/0626 (2013.01) [H04B 7/0486 (2013.01); H04B 7/0632 (2013.01); H04L 1/0693 (2013.01); H04L 5/0057 (2013.01); H04W 24/08 (2013.01); H04W 24/10 (2013.01); H04W 72/54 (2023.01)] | 20 Claims |
1. An apparatus comprising:
a processor configured to cause a user equipment (UE) to:
establish a connection with a base station;
receive, from the base station, control information for reporting channel state information in a channel state information report;
determine a spatial basis, W1, for L vectors;
determine M basis vectors after compression from N3 frequency units in frequency domain;
determine a plurality of compressed combination coefficients of a matrix of size 2LM coefficients associated with the determined spatial basis and M basis vectors, wherein the plurality of compressed combination coefficients corresponds to a particular layer;
encode the channel state information report including:
a first part including rank indicator information, wideband channel quality indicator (CQI) information, sub-band CQI information, and one or more fields indicating a number of non-zero coefficients to be reported; and
a second part including a field indicating indices of non-zero coefficients to be reported within the plurality of compressed combination coefficients; and
transmit the encoded channel state information report to the base station.
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