RADIO TERMINAL WITH TRANSMISSION TIMING CORRECTION FUNCTION AND ITS MANUFACTURE

摘要

PROBLEM TO BE SOLVED: To conduct transmission timing control with high accuracy by allowing the radio terminal with the transmission timing correction function to correct dispersion in delays for each terminal generated in a transmission system and a reception system. SOLUTION: A prescribed reference signal is fed to a transmission means 107, a delay amount measurement means 110 counts a time outputted from a demodulation means 103 via the transmission means 107, and an antenna multicoupler means 102 based on a reference frequency signal from a clock signal circuit 104 and the count result is set stored in a memory 108. In the case of transmission, a transmission timing control means 109 corrects the count by a correction count number stored in the memory 108 to decide on a transmission timing and a transmission timing control signal is fed to a transmission data generating means 106.