| 摘要 |
<p>A WLL communication system sharing a frequency or time slot, including WLL used by both a time division CDMA system and a TDMA system, and a mobile communication system. Grouping is effected according to the scale of transmitted power, different time slots are allotted to different groups, the frame synchronism between base stations is established on the basis of emitted radio waves, and a cellular communication system and a PCS system of different time slot lengths are operated synchronously with the same system, i.e. the same frame.</p> |
