Method and apparatus for transmitting control signaling

摘要

The present invention discloses a method and an apparatus for transmitting control signaling. The method includes: determining that a physical downlink shared channel PDSCH transmission scheme for a non-backward compatible component carrier is a user equipment-specific reference signal UE RS-based non-precoding matrix indicator Non-PMI feedback transmission scheme or a UE RS-based up to 8 layer transmission scheme; and sending downlink control information DCI to a UE, where the DCI is used to indicate the determined PDSCH transmission scheme. The apparatus includes a determining module and a first sending module. The method and apparatus in embodiments of the present invention can expand application scenarios of the non-backward compatible component carrier, increase spectrum utilization of the system, and avoid a system capacity decrease problem caused by limitations on the application scenarios of the non-backward compatible component carrier.

主权项

1. A method for transmitting, by a network node, control signaling, comprising:
determining that a physical downlink shared channel (PDSCH) transmission scheme for a component carrier accessed by a user equipment (UE) is:
a user equipment-specific reference signal (UE RS) based non precoding matrix indicator (Non-PMI) feedback transmission scheme by determining antenna ports corresponding to the UE RS wherein a Non-PMI feedback transmission scheme is a transmission scheme where no PMI is fed back by a UE; and notifying the UE of the determined PDSCH transmission scheme by sending, by the network node, downlink control information (DCI) to the UE, where the format of the DCI is DCI format 1A, DCI format 1, or DCI format 2C, and wherein a disabled transport block in the DCI carries signaling used to indicate the determined antenna ports corresponding to the UE RS.