Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Patent
1998-04-15
2000-12-19
To, Doris H.
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
455432, 455528, 455565, 455456, H04Q 720
Patent
active
061636959
ABSTRACT:
A mobile communication system and mobile communication method are capable of avoiding call-interruption while calling attention of the user who calls to be moved before entering transmission-stop zone. In the mobile communication method, it causes a base station ID to be received while retrieving all frequencies, thus judging whether or not there exists base station ID of "transmission-stop" instruction. When there is the base station ID of the "transmission-stop" instruction, it is judged that a mobile station exists in a transmission control zone, it comes into a state in which transmission is stopped, before coming into reception state. While when there is no the base station ID of the "transmission-stop" instruction, it is judged that a mobile station exists out of a transmission control zone, thus being selected a transmission destination. There is judged whether or not warning information is incorporated in base station ID of the transmission destination base station. When the warning information exists, the warning information/warning sound is generated, followed by shifting to normal operation. While when no warning information exists in the base station ID of the transmission destination, transmission is started to the transmission destination base station while shifting to the normal operation.
REFERENCES:
patent: 5442805 (1995-08-01), Sagers et al.
patent: 5905950 (1999-05-01), Anell
"Conventional Local Area Radio Coverage System", by K. Weiss, et al., Motorola Technical Developments, vol. 13, Jul. 1, 1991, pp. 67-69.
NEC Corporation
To Doris H.
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