Patent ID: 8189652

Claim:
A method of detecting whether a mobile terminal is in a high-mobility state or not, comprising steps of: estimating a channel impulse response (CIR) based on received signal samples, wherein the received signal samples correspond to a relevant time slot of a mobile communication system transmission; performing channel equalization based on (i) said received signal samples and (ii) the estimated channel impulse response, wherein performing the channel equalization minimizes an Inter-Symbol-Interference (ISI) present in the received signal samples to provide equalized signal samples; computing at least one characteristic value for a particular region of the relevant time slot based on the equalized signal samples, wherein computing the at least one characteristic value includes (a) extracting, from the equalized signal samples, samples belonging to a guard period of the relevant time slot to form (i) one matrix or (ii) a plurality of matrixes, and (b) processing (i) the matrix or (ii) the plurality of matrixes to generate one matrix index or more than one matrix index, respectively, wherein the matrix index or the more than one matrix index are used as the characteristic value or values, respectively, for the guard period of the relevant time slot; and deciding if said at least one characteristic value satisfies a predetermined condition set for mobile terminals that are in a high-mobility state, to detect whether said mobile terminal is in a high-mobility state or not, wherein if the at least one characteristic value satisfies the predetermined condition set for mobile terminals that are in a high-mobility state, then detecting that the mobile terminal is in a high-mobility state, otherwise, detecting that the mobile terminal is in a low-mobility state.