Channel quality information transmission method based on the differential method

摘要

Channel quality information transmission method based on the [challenge] differential method is started. According to the present invention comprises, given subband number when transmitting channel quality information for the sub-band a predetermined number of the receiving end is selected in the frequency selective channel, and transmits the average channel information of a whole, said selected The transmission in the form of sub-band difference information between the average channel information, at this time, channel information for the sub-band difference information can be represented in the form of a specific value of the difference value range having only positive values. Furthermore, when transmitting channel quality information of two or more in a multiple antenna system, and transmits the channel quality information for one channel, and transmitted in the form of a spatial difference information is channel quality information for other channels, at this time, spatial difference information can be transmitted in a specific value of the differential value range is set to have a range that does not symmetrically around a 0. [Selection Figure 7