Feedback method and system of channel quality indicatior

摘要

A method of CQI feedback comprises: in a CoMP system, a terminal feeding back a CQI corresponding to a comprehensive channel formed between the terminal and all transmission nodes in a CATS or each CQI corresponding to each channel between the terminal and each transmission node. A system of CQI feedback; in the system is also disclosed, a feedback unit at the terminal side is used in the CoMP system to calculate and feed back the CQI corresponding to the comprehensive channel formed between the terminal and all the transmission nodes in the CATS or each CQI corresponding to each channel between the terminal and each transmission node. With the method and system of the present invention, not only the CQI feedback in the CoMP system can be realized, but also the difference between the CQI feedback in the control channel and that in the traffic channel can be avoided.

主权项

1. A method of channel quality indicator feedback, comprising: in a multi-point coordinated transmission and reception (CoMP) system, a terminal feeding back a channel quality indicator corresponding to a comprehensive channel formed between the terminal and all transmission nodes in a CoMP active transmission point set, or each channel quality indicator corresponding to each channel between each transmission node and the terminal;
further comprising: in the CoMP active transmission point set, different transmission nodes applying the same modulation and encoding method.