DIGITAL TELEPHONY USING CONTROL MESSAGES TRANSMITTED IN TIME SLOTS FOR RF FREQUENCY ALLOCATION
摘要
In a system in which control messages are transmitted in predetermined time slots within fixed length time frames from a first transmitting and receiving unit to a second transmitting and receiving unit, the second unit listens on a selected RF carrier frequency for an incoming message, the selected RF carrier frequency being selected from the class of RF frequencies available and preferred for use, the RF frequencies being classified dependent on whether communications on previously selected carrier frequencies have been successful.
申请公布号
WO9717772(A1)
申请公布日期
1997.05.15
申请号
WO1996GB02750
申请日期
1996.11.08
申请人
IONICA INTERNATIONAL LIMITED;MARTIN, PAUL, MAXWELL;GOODINGS, RUPERT, LESLIE, ALEXANDER;SHORE, CHRISTOPHER, JOHN
发明人
MARTIN, PAUL, MAXWELL;GOODINGS, RUPERT, LESLIE, ALEXANDER;SHORE, CHRISTOPHER, JOHN