METHOD OF COMMUNICATION BETWEEN BASE STATION AND MOBILE STATION IN UMTS COMMUNICATION SYSTEM, COMMUNICATION SYSTEM, BASE STATION, AND, ALLOCATION METHOD FOR ALLOCATING SECONDARY SYNCHRONIZATION CODES TO BASE STATION IN UMTSCOMMUNICATION SYSTEM

摘要

PROBLEM TO BE SOLVED: To improve the performance of a synchronization process.SOLUTION: A base station transmits a primary synchronization code to a mobile station and transmits a subset of secondary synchronization codes belonging to twelve secondary synchronization codes selected from among sixteen available secondary synchronization codes. The twelve secondary synchronization codes have a best value in at least one of an off-peak maximum autocorrelation side lobe value (MAS), a square root of average of energy peak of autocorrelation function (RMS), a maximum cross-correlation peak (MCP) of cross-correlation function with primary synchronization codes (PSC), a square root of average of energy peak of cross-correlation function (RMS) with primary synchronization codes (PSC), a maximum cross-correlation peak (MCP) of cross-correlation function with all other secondary synchronization codes (SSC), and a square root of average of energy peak of cross-correlation function (RMS) with all other secondary synchronization codes.