Multichannel multipoint network using time-division multiplexing incorporating a time offset for propagation delay
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United States of America Patent
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Aug 27, 1991
Grant Date -
N/A
app pub date -
May 24, 1989
filing date -
May 24, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Time-division multiplexing (TDM) is used for communications between each remote location and the central location of a multichannel, multipoint polling network. Each remote location transmits data in a TDM frame which has predetermined time intervals for each channel or application. The duration and order of these time intervals are the same for each remote location. However, to avoid collisions between arriving data at the central location, the TDM frame used at each remote location is offset relative to the TDM frame at the central location by a time interval equal to the propagation delay for communications between that remote location and the central location. As a result, data for each application arrives at the central location in nonoverlapping time intervals and data collision is avoided.
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