US 8,509,332 B2 · Method for generating codebook, method and apparatus for data transmission

Abstract

A method for generating a codebook and a method and an apparatus for data transmission are provided. The method includes: receiving a label of a codeword sent by a User Equipment (UE); selecting the codeword identified by the label from the codebook for eight-antenna; and coding data to be sent by using the codeword. The codebook for eight-antenna includes at least one rank-8 codeword for eight-antenna. The rank-8 codeword for eight-antenna is generated by multiplying an inverse matrix of a rotation matrix for eight-antenna with an eight-dimensional matrix formed by rank-4 codewords for four-antenna; or generated by extending rank-4 codewords for eight-antenna, where the rank-4 codeword for eight-antenna is generated according to codewords for four-antenna. Therefore, the codeword in the codebook for eight-antenna is applicable to scenarios including dual-polarization strong correlation, dual-polarization weak correlation, single-polarization strong correlation, and single-polarization weak correlation, etc.

Claims12

Dependent claims

A base station apparatus, comprising

a storage unit configured to store a codebook for an eight-antenna configuration, the codebook for the eight-antenna configuration comprising at least one rank-8 codeword for the eight-antenna configuration, the rank-8 codeword for the eight-antenna configuration being generated by extending rank-4 codewords for the eight-antenna configuration;
a receiver configured to receive a label of a codeword from a user equipment (UE);
a searching unit configured to select the codeword identified by the label from the codebook for the eight-antenna configuration;
a coding unit configured to code data to be sent using the codeword selected by the searching unit;
and
a transmitter configured to send the coded data,
wherein each rank-4 codeword for the eight-antenna configuration is generated by creating a matrix by multiplying the rank-4 codeword for a four-antenna configuration with a diagonal matrix and concatenating the rank-4 codeword for the four-antenna configuration and the matrix.

4 more elements

Dependencies are inferred from the claim text.

Method for generating codebook, method and apparatus for data transmission

Life of this patent

Method for generating codebook, method and apparatus for data transmission

Life of this patent

Abstract

Claims12