Patent ID: 9379842
Filing Date: 2016-06-28
CPC Classification: H04L

Claim Text:
1. A method of adjusting an outer-loop adjustment value used for link adaptation in a wireless communication network having a plurality of Modulation and Coding Schemes, MCSs, the method comprising: determining an MCS from the plurality of MCSs for a User Equipment, UE; receiving a Transport Block, TB, feedback message at a base station; determining whether the TB feedback message indicates one of a successful transmission and an unsuccessful transmission; when the TB feedback message indicates the successful transmission, incrementing an acknowledgement counter corresponding to a modulation from the determined MCS, there being a dedicated acknowledgement counter for each modulation corresponding to an MCS from the plurality of MCSs; when the TB feedback message indicates the unsuccessful transmission, incrementing a non-acknowledgement counter corresponding to the modulation, there being a dedicated non-acknowledgement counter for each modulation corresponding to an MCS from the plurality of MCSs; calculating an estimated Block Error Rate, BLER, for the modulation based on the acknowledgement counter and the non-acknowledgement counter for the respective modulation; and calculating one of an upward step size and a downward step size for the modulation based on the respective estimated BLER, the outer-loop adjustment value using at least one of the upward step size and the downward step size to affect link adaptation.