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

摘要

The present invention relates to a transmission diversity technique for channel selection. According to the present invention, even if a transmission device transmits a signal using channel selection through a plurality of antenna ports, the overhead of a resource for channel selection, which occurs in proportion to the number of antennas, is reduced. Additionally, as the number of antenna ports participating in signal transmission is increased, multiplex capacity is reduced. According to the present invention, the degree to which the multiplex capacity is reduced according to the increase in the number of antenna ports is decreased.

主权项

1. A method for transmitting ACKnowledgement/Negative ACK (ACK/NACK) information to a base station by a user equipment including a plurality of antenna ports, comprising:
receiving, from the base station, information indicating a plurality of first resources for a first antenna port and information indicating a second resource for a second antenna port among the plurality of antenna ports; determining a first resource from the plurality of first resources, and a modulation symbol according to an ACK/NACK information for the plurality of first resources; transmitting the determined modulation symbol to the base station through the first antenna port on the determined first resource; and transmitting a signal corresponding to multiplication of information wC and the determined modulation symbol on the second resource to the base station through the second antenna port, wherein the information wC is ej2π(C/M) where M is the number of the plurality of first resources and C is an index number of the determined first resource among the plurality of first resources.