Grouping of spread spectrum acknowledgement pagers to minimize t

Details Grouping of spread spectrum acknowledgement pagers to minimize t Grouping of spread spectrum acknowledgement pagers to minimize t

1994-12-22

1999-02-09

Chin, Stephen

Pulse or digital communications

Repeaters

Testing

34082544, 455 311, H04B 1500, H04K 100, H04L 2730

Patent

active

058704264

ABSTRACT:
An acknowledgment paging system is described which fits within the existing infrastructure of a paging network and which provides low cost manufacture and low power operation while still enabling the acknowledgment paging over long distances. The acknowledgment paging system consists of a standard paging transmitter and a plurality of remote paging units which respond to a page using frequency-hopped spread-spectrum differential bi-phase shift keying communications. The plurality of pagers are assigned to groups with each group being assigned a separate starting location in a common, repeating pseudo-random noise code which determines the frequency hops. The grouping of pagers minimizes the collisions of acknowledgment transmissions between groups and the enables a large number of paging units to operate within a single geographic area.

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