METHOD FOR TRANSFER OF CHANNEL INFORMATION, TERMINAL, BASIC STATION AND IMPROVED LONG-TERM EVOLUTION SYSTEM

摘要

1. A method of transmitting channel information, characterized in that it includes: receiving channel information by a mobile terminal; determining in the codebook space, according to the channel information, a rank indicator (RI) and a precoding matrix indicator (PMI) corresponding to channel, and the transmission of RI and PMI indicators to the base station. 2. The method according to claim 1, characterized in that after the step of transmitting the RI and PMI indicators to the base station, the method also includes receiving the RI and PMI indicators by the base station and performing a downlink precoding operation in accordance with the RI and PMI indicators. The method according to claim 2, characterized in that the codebook space is stored in the mobile terminal and the base station. The method according to claim 1, characterized in that when the RI indicator is 8, the R codebook space is created by selecting any 2, 4, 8 or 16 matrices from the following set: 5. The method according to claim 1, characterized in that when the RI indicator is 7, the codebook space R is created by selecting any 2, 4, 8 or 16 matrices from the following set: where Z and Z matrices are 4 × 3, Z is made up of any 3 columns in X and Z is made up of any 3 columns in X, 6. The method according to claim 1, characterized in that when the RI indicator is 6, the R codebook space is created by selecting any 2, 4, 8 or 16 matrices from the following set: where Z and Z matrices are 4 × 3, Z is made up of any 3 columns in X, and Z is composed of any 3 columns in X, Z is composed of any 3 columns in X, and Z is composed of any 3 columns in X, 7. The method according to claim 1, characterized in that when the RI indicator is 5, the R codebook space is created by selecting any 2, 4, 8 or 16 matrices from the following