Importance

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Abstract

An economical, compact wireless data telemetry system 100 includes a transceiver 117 coupled with a portable computing device 118 to provide a mobile data messaging and location information delivery system. The wireless data telemetry system 100 is well suited for use in many possible applications, one application, vehicle location, provides an exemplary embodiment. In broadest terms, the system utilizes a plurality of analog RF channels for transmitting Mobile Data Packet Protocol (MDPP) packets between a tower site controller or remote base 124 and number of mobile data units 117. The radio links between the tower site 124 and the mobile data units 117 are full duplex analog RF data transmission links utilizing full duplex receivers and transmitters at each installation. The operation of the combination of elements is the novel focus of the present invention. Particularly, the mobile data unit 117 includes a main unit comprising RF and data circuits with a GPS receiver 120 and an RF antenna 122 for transmission of time-stamped location and data telemetry packets to a base station 130. The base or dispatch station 130 receives data in MDPP format from a plurality of mobile units 117 and organizes that information into a database that is stored and manipulated in a central web site server 112 for access by users or customers.

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First Claim