| 摘要 |
Embodiments of the present invention provide a method and an apparatus for establishing a mapping relationship and a method and an apparatus for feeding back channel quality information. The methods are applicable to terminal equipment configured with a coordinated multiple-point feedback mode, the method for establishing a mapping relationship includes: determining, by terminal equipment, the number of bits for denoting differential channel quality information and mapping relationship between each of bit values of the differential channel quality information and an offset reference value according to a CoMP transmission mode, so as to feed back the differential channel quality information by using the mapping relationship; wherein in the mapping relationship, a plurality of offset reference values to which the bit values in an order from small to large correspond are a plurality of incremental integers. With the methods and apparatuses, reasonable CQI feedback is designed according to different improvements brought by different CoMP transmission technologies, thereby lowering overhead of feedback of CQI, and improving throughout of a user based on CoMP transmission. |
