Radio channel quality estimation

摘要

A method of and an apparatus for estimating the quality of service of a radio channel in a radio communications system. The bit error rate for each of a set of plural samples of a signal on a radio channel is estimated. The number of bit error values in the set falling within each of a plurality of particular bit error rate ranges is determined. The determined distribution of the bit error rate values in the sampled set is then compared with predetermined reference bit error rate distributions which each represent a different channel service quality. The quality of the sampled signal is determined to be the quality of the reference distribution that the sampled signal bit error rate value distribution most closely matches. Also mentioned is a method of estimating service quality using an estimation algorithm which is chosen according to the speed of a mobile radio unit.