Mobile radio communication device with enhanced connecting schem

Details Mobile radio communication device with enhanced connecting schem Mobile radio communication device with enhanced connecting schem

1998-02-03

2000-12-26

Vo, Nguyen

Telecommunications

Transmitter and receiver at separate stations

Plural transmitters or receivers

455525, H04B 726

Patent

active

061672815

ABSTRACT:
This is a mobile radio communication device having a base station and a mobile station that is connected by radio with this base station using time division multiple access, in which stable connection with the base station can be achieved and subsequently stable radio communication can be conducted. In the initial period of communication with the base station, the mobile station receives the signal from the base station asynchronously; under the condition that the field intensity of a signal transmitted by the base station exceeds a first threshold value, synchronization establishment control is performed in which a synchronization establishment operation is performed with the base station; after establishment of synchronization with the base station by the synchronization establishment operation, synchronization maintenance operation with this base station is performed under the condition that the field intensity from this base station exceeds a second threshold value that is smaller than the first threshold value.

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patent: 5535440 (1996-07-01), Clappier
patent: 5689504 (1997-11-01), Hashimoto
patent: 5774810 (1998-06-01), Sugi

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