Method for receiving and transmitting ACK/NACK information, user equipment, and base station

摘要

The present invention provides a method and an apparatus for mitigating/eliminating interference between adjacent cells by configuring a subframe subset, in which the downlink transmission/reception of a specific cell to be user equipment-specific is limited. According to the present invention, the transmission/reception of a downlink signal for a specific user equipment in the subframe in which the downlink transmission/reception of the specific cell is limited, thereby mitigating/eliminating interference from an uplink of a different cell with the downlink of the specific cell from a base station to the specific user equipment.

主权项

1. A method for receiving, by a user equipment operating in a time division duplex (TDD) mode, acknowledgement/negative acknowledgement (ACK/NACK) information from a base station, the method comprising:
receiving a Downlink-Uplink (DL-UL) configuration of the base station from the base station; receiving a neighboring DL-UL configuration of a neighboring base station from the base station; determining one or more collision subframes based on the DL-UL configuration and the neighboring DL-UL configuration, wherein the one or more collision subframes are one or more downlink subframes of the base station corresponding to one or more uplink subframes of the neighboring base station; receiving, from the base station, an information bitmap indicating at least one restricted subframe of the one or more collision subframes, wherein the information bitmap is specifically configured to the user equipment; and receiving the ACK/NACK information at a first downlink subframe according to the DL-UL configuration, wherein the first downlink subframe is a downlink subframe of the base station other than the at least one restricted subframe, and wherein a physical downlink control channel, a physical downlink shared channel, and a physical hybrid automatic retransmit request indicator channel are restricted to be received at the user equipment in the at least one restricted subframe.