Codebook subset restriction based on codebook grouping

摘要

A method and apparatus are provided for an apparatus. The apparatus includes at least one memory including computer program code, and at least one processor. The at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to receive an indication of a set of codeword groups to be included in a codebook, and to select a precoding matrix index based on the indicated set of codeword groups in the codebook. The apparatus is also cause to transmit the precoding matrix index to a network node.

主权项

1. An apparatus, comprising:
at least one memory including computer program code; and at least one processor, wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to:
receive an indication of a set of codeword groups to be included in a codebook;select a precoding matrix index based on the indicated set of codeword groups in the codebook; andtransmit the precoding matrix index to a network node,wherein at least one codeword group of the set of codeword groups is defined for an antenna setup in a communication system,wherein the antenna setup comprises at least one of uncorrelated or diversity antenna setup, cross-polarized antenna setup, and uniform linear array antenna setup,wherein the at least one memory and the computer program code are further configured, with the at least one processor, to cause the apparatus at least to transmit the precoding matrix index to the network node to enable the network node to perform at least one of precoding, link adaptation, and single or multi-user scheduling for an antenna setup of the communication system.