Method for transmitting channel quality information, user equipment, method for transmitting multi-user data, and base station

摘要

The present invention relates to a wireless communication system. More particularly, the present invention relates to a method and apparatus which indicate, using multiple CQIs, channel quality in the event multiple users are scheduled in the same time/frequency area, and to a method and apparatus which estimate a channel state using said multiple CQIs. According to the embodiments of the present invention, a channel state can be estimated in a more accurate manner in a multi-user MIMO system.

主权项

1. A method for transmitting channel quality indication information by a user equipment (UE) among a plurality of UEs in a wireless communication system, the plurality of UEs capable of simultaneously receiving signals transmitted from a base station (BS), the method comprising:
receiving a reference signal from the BS; generating channel quality indication information indicating a channel quality of the UE estimated based on the reference signal; and transmitting the generated channel quality indication information to the BS, wherein the channel quality indication information includes at least one channel quality indicator calculated assuming that multiple UEs are allocated to a resource area and based on a number of the multiple UEs, wherein the method further comprises receiving information indicating a maximum number of channel quality indicators, and wherein the number of the multiple UEs is predetermined according to the maximum number of channel quality indicators.