CPC H04B 7/0626 (2013.01) [H04B 7/0632 (2013.01); H04B 7/0634 (2013.01); H04L 5/0094 (2013.01)] | 16 Claims |
1. A method for reporting channel state information (CSI), comprising:
dividing M subbands to be reported into two sets, wherein a first set comprises N of the M subbands, M is a positive integer greater than 1, N is a positive integer greater than or equal to 1, and M−N≥1;
determining a relative value between CSI of each subband in a second set and CSI of a reference subband corresponding to the each subband in the second set; and
reporting CSI of each subband in the first set and the relative value of the each subband in the second set to a base station;
wherein dividing the M subbands to be reported into two sets comprises:
calculating a channel quality indicator (CQI) value of each of the M subbands;
selecting first N subbands having CQI values from high to low as subbands in the first set; and
using remaining subbands among the M subbands other than the N subbands as subbands in the second set.
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