Radio pager sync acquisition timing arrangement for battery savi

Details Radio pager sync acquisition timing arrangement for battery savi Radio pager sync acquisition timing arrangement for battery savi

1995-11-24

1998-04-14

Eisenzopf, Reinhard J.

Telecommunications

Transmitter and receiver at separate stations

455343, 34082544, 370311, H04B 708

Patent

active

057405174

ABSTRACT:
In a selective calling radio pager for receiving a paging signal of a superframe structure comprising a recurrent series of frames, each containing a series of burst signals containing a synchronization field, a short warm-up period and a short time-out period are established before each burst signal of an assigned frame of a first superframe is received. A long warm-up period and a long time-out period are established before the burst signals of the assigned frame of a second superframe as received. The receiver is activated at the start of the short warm-up period advanced from the start of each burst signal and a determination is made whether synchronization is established within the subsequent short time-out period. A long warm-up period and a long time-out period are then established and the receiver is deactivated. The receiver is reactivated at the start of the long warm-up period advanced from the start of the assigned frame of a second superframe, and determination is made whether synchronization is established within the long time-out period.

REFERENCES:
patent: 4086537 (1978-04-01), Asakawa et al.
patent: 4961073 (1990-10-01), Drapac et al.
patent: 5376975 (1994-12-01), Romero et al.
patent: 5382949 (1995-01-01), Mock et al.
patent: 5530911 (1996-06-01), Lerner et al.

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