Patent ID: 9392595
Filing Date: 2016-07-12
CPC Classification: H04B,H04L,H04W

Claim Text:
1. A control information transmission method, comprising: obtaining a data channel transmission mode configured by a base station; determining a downlink control information (DCI) format set corresponding to the transmission mode, wherein the DCI format set comprises a first DCI format, and the first DCI format comprises single-codeword control information; detecting, according to the DCI format set, control signaling sent by the base station and corresponding to the DCI format set; when the control signaling corresponding to the first DCI format is detected, receiving or sending, according to antenna configuration information comprised in the first DCI format, the data channel scheduled in the first DCI format, wherein the data channel scheduled in the first DCI format uses a closed loop MIMO transmission manner, and the antenna configuration information comprises at least one of codeword information, antenna port information, reference signal scrambling code identifier information, precoding matrix identifier information, and information about the number of space layers; determining, according to the control signaling corresponding to the first DCI format, that data transmitted over the data channel scheduled in the first DCI format is a retransmitted codeword; and determining, according to the antenna configuration information, that the number of layers occupied by the retransmitted codeword is greater than or equal to two layers, or that the number of layers occupied by the retransmitted codeword is equal to the number of layers occupied by an initially transmitted codeword corresponding to the retransmitted codeword, wherein the DCI format set further comprises a second DCI format, the second DCI format comprises dual-codeword control information, and a data channel scheduled based on the first DCI format and the second DCI format uses a closed loop MIMO transmission manner that is precoded based on channel information and comprised of one or more layers.