Method for transmitting ACK/NACK signals, and base station and user equipment for the method

摘要

According to one aspect of the present invention, values which are specifically defined for each user equipment are reflected when resource allocation/mapping of downlink/uplink ACK/NACK channels is performed, so as to vary uplink/downlink ACK/NACK information transmitting resources for each user equipment allocated to the same downlink/uplink resource. According to another aspect of the present invention, nodes for transmitting uplink/downlink ACK/NACK information vary for each user equipment allocated to the same downlink/uplink resource. According to the present invention, even when downlink/uplink signals for a plurality of user equipment are transmitted from the same resource, uplink/downlink ACK/NACK signals of the plurality of user equipment are transmitted from different resources, thereby reducing interferences among ACK/NACK signals of the plurality of user equipment.

主权项

1. A method of transmitting, by a base station controlling at least one of a plurality of nodes, a ACKnowledgement/Negative-ACKnowledgement (ACK/NACK) signal to a user equipment being capable of simultaneously receiving signals from the plurality of nodes, the method comprising:
allocating a resource to an ACK/NACK channel carrying the ACK/NACK signal using an offset nDLoffset specific to the user equipment; and transmitting the ACK/NACK channel on the resource, wherein the offset nDLoffset is a value decided based on at least one from among a value defined by an upper layer with respect to the user equipment, an identifier of a node used in uplink transmission in response to which the ACK/NACK signal is transmitted, a type of the node used in the uplink transmission, an identifier of a node to be used in transmission of the ACK/NACK signal, a type of the node used in the transmission of the ACK/NACK signal, a pattern index of a reference signal allocated to the user equipment, or a multiplexing sequence of a resource used in the uplink transmission.