The present invention relates to estimating and reporting apparatus and method of the CINR in a wireless communication system, especially in a wireless communication system using multiple antennas, and estimating the CINR report to an apparatus and method. ; In the present invention, estimates a received signal-to-noise-interference ratio in a radio system using multiple antennas, and provides an apparatus and method for reporting it. ; According to an embodiment of the present invention includes: receiving from the terminal a signal-to-noise-interference ratio (CINR) report accepted for viewing and by estimating the CINR from the terminal of a wireless communication system for transmitting data to determine the coding and modulation level is adaptively to the device, at least comprising more than one antenna, to process the radio signals for each antenna and a wireless processing part for converting a signal of a baseband, and the switch for transmitting the output of the signal received by each antenna from the radio processing unit or block , the oN / oFF of the switch based on the effective CINR measurer and said diversity parameters received from the effective CINR measurer and outputting from the signal that is output via the switches measure the diversity parameters including the CINR values control, and control for generating a report message, using the diversity parameters And a unit, and a sending unit for sending the report message to the base station. ; Multiple antennas, CINR, reporting, CNIR estimation, antenna switching, the delay report
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