APPARATUS AND METHOD FOR NEIGHBOR CELL SIGNAL MEASUREMENT IN PORTABLE TERMINAL

摘要

An apparatus and a method for measuring neighbor cell signals in a mobile terminal are provided to minimize the power consumption and increase the duration of the battery by preventing unnecessary neighbor cell signal measurement in measuring neighbor cell signals for cell reselection. A UE(User Equipment) receives system information, and acquires "Qqualmin", the minimum required quality level, "Sintrasearch", a reference threshold for intra frequency measurement, "Sintersearch", a reference threshold for inter frequency measurement, and "Ssearch.RAT(GSM)", a reference threshold for inter RAT frequency measurement(310). Then the UE calculates a measured cell quality value "Qualmeas" at CPICH(Common Pilot CHannel) Ec/No or CPICH RSCP(Received Signal Code Power)(320). If a cell selection quality value "Squal", obtained through the subtraction of "Qqualmin" from "Qualmeas", is smaller than or equal to "Sintrasearch + Sstart_measure" during "Tstart_measure"(330), the UE starts neighbor cell measurement for intra cell reselection(340).