Patent ID: 6088593
Filing Date: 2000-07-11
Classification: G08B,H01Q,H04B,H04L,H04W

Abstract:
A paging network capable of transmitting short messages to and receiving short replies from portable paging units comprising:a control site having means for controlling transmitter and receiver sites and sending information thereto and receiving information therefrom;at least one transmitter site for transmitting short messages addressed to individual paging units;at least two receiving sites each including:plural antennas connected to respective receive channel signal processing units which convert received signals to corresponding sequences of complex numbers;a synchronization mechanism for receiving a synchronization indication from said control site to control said receive channel processing unit and converting activity in time relation to said transmitter site's transmissions;memory means for storing said complex number sequences and forwarding said complex number sequences to said control site;processing means for processing complex numbers received at said control site using different postulates of pager location to produce combined complex number sequences corresponding to enhanced reception from different locations; andcorrelation means for correlating said combined sequences with a predetermined signal pattern to produce a detection indication and a location indication.