Protocol and mechanism for centralized asset tracking communicat

Details Protocol and mechanism for centralized asset tracking communicat Protocol and mechanism for centralized asset tracking communicat

1995-06-07

1997-05-27

Hsu, Alpus H.

Multiplex communications

Communication over free space

Combining or distributing information via time channels

34082554, H04J 1302, H04B 7216

Patent

active

056338759

ABSTRACT:
A protocol and mechanism which provide for centralized asset tracking communications from a central station are based on a control/polling forward channel; i.e., a narrow band channel from the central station to tracking units affixed to the assets. A narrow band service channel is used by the asset tracking units to transmit to the central station to aid the central station in efficient scheduling of asset reporting, and a plurality of narrow band channels that are appropriately multiplexed are used for conveyance of data from the asset tracking units to the central station.

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John D. Spragins et al. "Telecommunications Protocals and Design", Feb. 1991 pp. 208-211.

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