Patent ID: 6847809
Filing Date: 2005-01-25
Classification: H04L

Abstract:
1. A signal-to-interference-and-noise ratio (SINR) prediction method for dynamic rate selection in a wireless data communications system, comprising: detecting a periodic mean SINR component in a regularly measured SINR process based on a received signal from a base station; activating, after said detecting, a periodic mean SINR estimation; subtracting the estimated periodic mean SINR estimation from the measured SINR process to obtain an intermediate SINR; performing intermediate prediction on the intermediate SINR to obtain an intermediate predicted SINR; adding, after a delay period, an average of the estimated mean periodic SINR to the intermediate SINR prediction to obtain a final SINR prediction; applying a dynamically determined backoff amount based on the final SINR prediction to control the packet error rate in said wireless data communications system.