Method and apparatus for generating codebooks and associated data in a network device

摘要

A method and apparatus for generating a codebook and the associated data in a network device are provided in the invention. The method comprises the steps of generating a first row sub-matrix corresponding to a first group of antennas respectively for the respective ranks of the codebook to be generated; generating a second row sub-matrix corresponding to a second group of antennas respectively for the respective ranks based on an amount of the phase adjustment of the second group of antennas with respect to the first group of antennas; and generating a second codebook in accordance with the first row sub-matrix and the second row sub-matrix. As some embodiments of the method of the invention comprise the implementation of adjustment of the phase offset and the amplitude difference between the first and the second groups of antennas, the phase offset and the relative amplitude difference among the cross-polarized linear antennas array is guaranteed when the network device uses the downlink data generated therefore for transmission, such that the receiving quality of the transmitted data may be improved, and the system performance may be improved effectively.

主权项

1. A method for generating data in a network device, the network device comprising a cross-polarized linear antenna array, the cross-polarized linear antenna array comprising cross-polarized first and second groups of antennas, the method comprising:
receiving first codebook information from a user equipment; determining a first codebook and a first codeword therein in accordance with the first codebook information; and generating a first data in accordance with the first codeword; wherein the first codeword corresponds to a first matrix, and first and second row sub-matrices of the first matrix correspond to the cross-polarized first group of antennas and the cross-polarized second group of antennas respectively; wherein with respect to the first row sub-matrix, the second row sub-matrix reflects an amount of phase adjustment of the cross-polarized second group of antennas with respect to the cross-polarized first group of antennas; and respective column vectors of the first matrix are orthogonal; wherein the first codebook information comprises a rank indication and a codeword indication; the first matrix is a matrix normalized in accordance with the rank indication; wherein determining further comprises:
determining the first codebook in accordance with the rank indication; anddetermining the first codeword from the first codebook in accordance with the codeword indication.