| 摘要 |
<p>A satellite-based, world-wide cellular messaging system (5) transmits paging messages to pagers via multiple beams (30). A message unit (2) monitors a multi-frequency, TDMA paging transmission and, in response to the number of transmission frequencies in use during a given time, switches to a predetermined one of the frequencies, dependent upon the contents of a reprogrammable table stored in the message unit. Information within the paging transmission specifies what frequencies will be used and when a paging transmission will be directed at a particular pager's cell.</p> |
