Multi-antenna transmission method and apparatus

摘要

The present invention relates to the field of communications technologies and provides a multi-antenna transmission method and apparatus, which can reduce interference and improve system throughput. In the solutions provided in embodiments of the present invention, a reference signal RS configuration set sent by an eNB is received, CSI corresponding to each RS configuration in the RS configuration set is acquired based on the RS configuration set, the CSI set is sent to the eNB, then a signal sent by the eNB according to the CSI set is received, and data processing is performed. The solutions provided in the embodiments of the present invention apply to multi-antenna signal transmission.

主权项

1. A multi-antenna transmission method, comprising: receiving, by a user equipment (UE), a reference signal (RS) configuration set sent by an evolved base station (eNB), and
acquiring, by the UE, based on the RS configuration set, each channel state information (CSI) corresponding to each RS configuration in the RS configuration set, based on no existence of interference from antenna ports corresponding to part or all of the RS configurations in the RS configuration set, or cancelation of interference from the antenna ports corresponding to the part or all of the RS configurations, wherein the RS configuration set comprises at least two RS configurations; sending, by the UE, a CSI set to the eNB through a physical uplink control channel (PUCCH), wherein the CSI set comprises the each CSI corresponding to each RS configuration in the RS configuration set; receiving, by the UE, a signal sent by the eNB according to the CSI set, and performing data processing; and wherein sending, by the UE, the CSI set to the eNB through the PUCCH comprises: dividing, by the UE, a bit sequence of CSI in the CSI set to be transmitted into two parts; separately encoding, by the UE, the two parts of the CSI bit sequence by using (32,0) RM codes to obtain 32 bits for each of the two parts, and removing 8 bits from the end of the 32 bits of each part to obtain 24 encoding bits for each part; performing quadrature phase shift keying (QPSK) modulation, by the UE, on the obtained 24 encoding bits for each part to obtain 12 QPSK modulation symbols for each part; and sequentially mapping, by the UE, the obtained 12 QPSK modulation symbols for each part onto two timeslots of the PUCCH and transmitting the obtained 12 QPSK modulation symbols for each part to the eNB.