Access technique of channel hopping communications system

Details Access technique of channel hopping communications system Access technique of channel hopping communications system

1996-12-23

1999-08-17

Ghebretinsae, Temesghen

Pulse or digital communications

Repeaters

Testing

455 383, 34082573, 370311, H04B 1713

Patent

active

059404310

ABSTRACT:
Establishing a connection between a paging unit and a standby unit in a channel hopping communications system includes activating the standby unit for an activation time period out of every standby time period. During each activation time period, the standby unit monitors a selected channel for receipt of a paging message. The selected channel is selected from a plurality of channels, and, for each subsequent activation time period, the selected channel is a subsequent one of the plurality of channels as specified by a hopping sequence and an internal clock. A page train is repeatedly transmitted from the paging unit to the standby unit, until a response is received from the standby unit. Each page train includes a plurality of paging messages, each paging message being transmitted on a different one of a subset of the plurality of channels. Selection of a page train for transmission by the paging unit may be based on an estimate of the standby unit's internal clock.

REFERENCES:
patent: 4578816 (1986-03-01), Rabain et al.
patent: 4677617 (1987-06-01), O'Connor et al.
patent: 5353341 (1994-10-01), Gillis et al.
patent: 5430775 (1995-07-01), Fulghum et al.
patent: 5432814 (1995-07-01), Hasegawa
patent: 5528623 (1996-06-01), Foster, Jr.

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