Multiaccess carrier sensing network communication protocol with priority messages
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United States of America Patent
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Jun 7, 1994
Grant Date -
N/A
app pub date -
Dec 3, 1990
filing date -
Dec 3, 1990
priority date (Note) -
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Abstract
An improved network for communication of message packets. The network of the present invention implements an improved collision avoidance, detection and backoff system for communication on a media between nodes. The apparatus calculates a time period P after detecting the media is idle using a formula F which is a function of a pseudo-random delay factor T. If the media remains idle during the time period P, the device may transmit a message. The apparatus further has the ability to assign messages as being either priority or non-priority messages. Priority messages may be transmitted during priority message slots preassigned to transmitting nodes. Non-priority message contend for the media during a period of time following the period set for transmission of priority messages.
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