Multiplex communications – Communication over free space – Having a plurality of contiguous regions served by...
Patent
1996-08-09
1998-07-28
Olms, Douglas W.
Multiplex communications
Communication over free space
Having a plurality of contiguous regions served by...
370504, 370510, 455502, 375356, H04J 306
Patent
active
057870780
ABSTRACT:
The problem of pulse frame synchronization occurs for example in a telecommunications system with cordless terminals operating according to the DECT standard. To establish a radio connection between base station and a cordless terminal, the base station scans its radio cell in sequence with the available ten high-frequency carriers in the DECT frame rhythm. In a multiple cell environment, the synchronization of all base stations belonging to a cordless telecommunications installation is necessary, to enable all base stations to scan the same frequency at the same time. This is achieved by blanking the DECT multi-frame synchronization pulses. The pulse gap is evaluated by error detection circuits which are present anyway, and used for the PSCN Primary receiver Scan Number-synchronization.
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Geywitz Klaus
Veloso Artur
ALCATEL N.V.
Nguyen Chau T.
Olms Douglas W.
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