| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem that a frequency offset is determined by the shift of original oscillation before pull-in, when the mobile station side performs reception pull-in processing from asynchronous state and the probability of failing pull-in processing increases, when the frequency offset is large or when the temperature characteristics are varied due to aging of VCTCXO, and to provide a method for automatically correcting the shift of original oscillation due to aging. SOLUTION: When a mobile station is receiving a wave transmitted from a base station in synchronism therewith, frequency follow-up error is small. The correction of variation of original oscillation due to aging is realized, by storing the control information of original oscillation at receiving of a wave transmitted from a base station in synchronism therewith, by utilizing the original oscillation accuracy of the base station is fully high as a reference. |
