| 摘要 |
A method for time synchronizing base stations in an asynchronous cellular communication system via multi-communications mode user equipment is described. The method includes receiving time-of-day in a synchronous cellular communication signal with the user equipment operable in a synchronous cellular communications mode. Alternatively, time-of-day is received from a non-cellular system signal with user equipment that is operable to receive signals from the non-cellular system. After time-of-day is received the user equipment is switched to operate in an asynchronous cellular communications mode. Then a frame boundary of a received asynchronous cellular communication signal is time-tagged. Timing information is then transmitted to an entity of the asynchronous cellular communication system to determine time-of-day at the entity. |
