Method, apparatus and system for transmitting channel state information

摘要

An apparatus and a system for transmitting channel state information acquires channel state information of a channel between a mobile terminal and two or more cooperative base stations. The apparatus quantizes the channel state information separately by using a preset single-cell codebook used for quantizing the channel between the mobile terminal and each one of the two or more cooperative base stations. The apparatus acquires united codeword indexes of the quantized channel state information in the single-cell codebook; and transmits the united codeword indexes of the quantized channel state information in the single-cell codebook.

主权项

1. A method of transmitting channel state information comprising:
acquiring channel state information of a channel between a mobile terminal and two or more cooperative base stations; quantizing the channel state information separately by using each single-cell codebook used to quantize the channel state information of the channel between the mobile terminal and each of the two or more cooperative base stations; acquiring united codeword indexes of the quantized channel state information in the single-cell codebook; and transmitting the united codeword indexes of the quantized channel state information in the single-cell codebook, wherein acquiring the channel state information of the channel between the mobile terminal and the two or more cooperative base stations comprises: acquiring an aggregated channel matrix and path loss between the mobile terminal and the two or more cooperative base stations; acquiring a normalized aggregated channel matrix by normalizing the aggregated channel matrix using the path loss; and acquiring the channel state information of the channel between the mobile terminal and the two or more cooperative base stations according to the normalized aggregated channel matrix.