H - Electricity – 04 – B
Patent
H - Electricity
04
B
H04B 1/38 (2006.01) H04B 7/26 (2006.01) H04Q 7/38 (2006.01) H04Q 7/32 (2006.01)
Patent
CA 2077095
The present invention is directed to a cellular mobile radio telephone system in which mobile stations may select either analog or digital control channels. Analog and dual-mode mobile stations are equipped to become multi-mode mobile stations which monitor both analog and digital control channels depending on the selected mode. Downlink multi-mode mobile stations, while required to use analog control channels for call access, may nonetheless scan digital control and paging channels to receive downlink control and paging communications from the land-based system. Bi- directional multi-mode mobile stations have the same capabilities as downlink mobiles but also are equipped to transmit control information to the land station over the uplink digital control channel. If no digital control channel is available, the multi-mode mobile stations scan primary and secondary sets of analog control channels. In this way, analog and dual-mode mobile stations may benefit from the advantages of monitoring digital control channels and digital paging channels including multiple pages per channel and battery-saving capabilities.
Dahlin Jan Erik Ake Steiner
Ghisler Walter
Mueller Walter Gerhard Alois
Marks & Clerk
Telefonaktiebolaget Lm Ericsson
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