Patent ID: 9491715
Filing Date: 2016-11-08
CPC Classification: G06F,H04B,H04W

Claim Text:
1. A method in a radio base station for handling a thermal noise power floor in a thermal noise power floor estimation process, comprising: determining a change or a rate of change of a thermal noise power floor estimate relative to a previous thermal noise power floor estimate; and when the change or rate of change exceeds a threshold value, performing one or more of the following: setting a limitation of the change or rate of change to be below the threshold value; adjusting a scaling power; and reducing an estimated mean power level with a quantity dependent on a reduction of the thermal noise power floor estimate, wherein, in case the change or rate of change is a reduction of the thermal noise power floor estimate that is larger than the threshold value, the estimated mean power level is reduced with a quantity dependent on the reduction of the thermal noise power floor estimate, and at least one of the following actions is performed: re-initiating an estimated probability density function of the thermal noise power floor at a level indicated by the estimated mean power level; and re-initiating an estimated cumulative probability density function of the thermal noise power floor, at a level indicated by the estimated mean power level.