| 摘要 |
In a TDMA cellular communication network, one of the cell sites is a reference station for establishing a time reference in response to a timing signal from a mobile switching office, and each of the other cell sites is a subordinate station. Each subordinate station establishes a time slot in response to the timing signal from the mobile switching system and receives a signal from a mobile station located in the area of the reference station for detecting a time lapse between the time slot and the signal from the mobile station. A delay time is introduced to the time slot according to the time lapse so that the time slot is synchronized to the time reference of the reference station. In a second embodiment, each subordinate station transmits a signal indicative of the detected time lapse to the mobile switching system, where a delay time value is derived from those signals received from a chain of subordinate stations and returned to each subordinate station for performing the time slot adjustment. The delay time value is a modulo tau summation of the time lapses received from such chain of subordinate stations, where tau is the duration of the time slot. |
