H - Electricity – 04 – Q
Patent
H - Electricity
04
Q
H04Q 7/38 (2006.01) H04Q 7/32 (2006.01)
Patent
CA 2315962
A wireless communications technique enables direct call set up and communication between wireless subscribers without involving network infrastructure. A mobile is modified to perform like a network base station during a local calling mode initiated by a user, thereby reversing transmit and receive frequency bands and allowing the mobile to set up and carry out a call as if it were a network base station. The mobile initially performs a communication channel or frequency sweep sequence to determine an idle traffic channel, thereby preventing interference with other subscribers. After a local call is established, the transceiver monitors call quality, and performs another communication channel or frequency sweep sequence to select a new traffic channel when call quality drops below a threshold level to ensure a certain level of call quality between the first and second mobiles.
Kirby Eades Gale Baker
Lucent Technologies Inc.
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