| 摘要 |
An arrangement comprises a number of units that can communicate with each other via at least one wireless connection system for the transmission of messages. The connection system works with first and second reception areas. A time slot system is established in a first reception area, in which system the units have access to the transmission media in question in allocated and sequential time intervals, during which the units are activated for their respective transmissions and receptions using time information executed in the time slot system, which time information refers to one or more reference times utilized in the time slot system. The means for effecting the time slot system and the respective unit concerned which is located outside the reception area can receive the said time information signals determining the reference time or reference times, which time information signals are obtained from a master time generation system with the second reception area which is larger or smaller than the first reception area. In this way, the said unit can receive the said time information signal and prepare itself completely or partially for tuning to the said time slot system before it enters into or is covered by the first reception area.
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