Patent ID: 7158795

Claim:
A GSM (Global System for Mobile Communication) handset capable of deciding whether to analyze an entirety of a Paging Channel (PCH) message, by analyzing a first burst of the PCH message block, the handset comprising: a memory space for storing a first binary reference-vector, a second binary reference-vector, and a third binary reference-vector; a receiving facility for receiving the first burst of the PCH message block; a sampler for sampling and quantizing the first received burst into a plurality of data points; a processor for creating a first and a second binary received-vector whose every individual bit relates to one individual data point of the first burst; a processing facility for comparing bits of the first received-vector with the related bits of the first reference-vector, and related bits of the second received-vector with the bits of the second and the third reference-vectors; a computing element for computing a total number of matched pairs for each of the three vector comparisons, wherein the two compared bits of a matched pair are the same; a decision-making element for deciding that the handset should analyze the entire PCH message block, if the total number of the matched pairs of the first vector comparison is less than a first threshold value; a decision-making element for deciding that the handset need not consider the rest of the PCH message block, if the total number of the matched pairs of the first vector comparison is equal to or more than the first threshold value and the total number of the matched pairs of at least one of the other two vector comparisons is equal to or more than a second threshold value; and a decision-making element for deciding that the handset should consider the rest of the PCH message block, if the total number of the matched pairs of the first vector comparison is equal to or more than the first threshold value and the total number of the matched pairs of each of the other two vector comparisons is less than the second threshold value.