| 摘要 |
PROBLEM TO BE SOLVED: To surely attain time division multiple access(TDMA) communication by avoiding erroneous detection of a deviation in a frame timing and occurrence of a disabled timing correction. SOLUTION: Time alignment control is conducted at the setting UP of re- synchronization when making communication mobile terminals 1a, 1b under the control of a mobile communication control station 3 through a radio base station 2 by a TDMA system. The mobile terminals 1a, 1b and the mobile communication control station 3 through the radio base station 2 set up synchronization for setting a communication channel. When re-synchronization is set up as a state of out-of-synchronism is detected during communication through a set communication channel, the mobile communication control station 3 detects a time alignment control variable. The time alignment control variable having been stored after synchronization establishment is updated by replacing it with a time alignment control variable which is detected at the setup of re- synchronization. |
