Method and apparatus of performing outer loop link adaptation operation

摘要

The present invention discloses a method and apparatus of performing outer loop link adaptation (OLLA) operation. This method may comprise: accelerating in an initial probing phase, increase of an OLLA scaling factor until obtaining a negative result regarding codeword selection; and fine modifying, in a fine modification phase, the scaling factor using an upturn factor and a downturn factor in response to the result regarding codeword selection so that a channel quality indication, which is modified using the scaling factor, is matched with its actual value. Compared with the prior art, the technical solution as provided in the present invention can quickly modify a CQI to match its actual value, thus this solution may effectively mitigate the CQI mismatch, improve the CQI feedback accuracy, and further enhance the cell throughput performance and frequency utilization.

主权项

1. A method of performing outer loop link adaptation OLLA operation by at least one hardware processor coupled to a computer storage storing program code, the at least one hardware processor configured to read said program code and programmed to execute the method comprising:
accelerating, in an initial probing phase, increase of a scaling factor for the OLLA operation until obtaining a negative result regarding codeword selection; fine modifying, in a fine modification phase, the scaling factor using an upturn factor and a downturn factor in response to the result regarding codeword selection so that a calculated value of a channel quality indication is modified using the scaling factor to match with an actual value of the channel quality indication, wherein the fine modification phase is entered when the scaling factor reaches an initial probing threshold during the initial probing phase; and updating the initial probing threshold to the modified scaling factor in the fine modification phase.