Methods for detecting and polling downstream modems
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United States of America Patent
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N/A
Issued Date -
Apr 24, 2003
app pub date -
Jul 25, 2002
filing date -
Aug 3, 2001
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method of finding the address of a previously undiscovered client modem first detects the presence of a previously undiscovered client modem on a tree and branch network then uses an efficient method to discern the address for the newly discovered client modem. The method can be coupled with a group polling method for efficiently polling client modems that minimizes the time wasted by polling a modem without data to transmit. In group polling, a broadcast message is sent to all modems (or a selected subset of modems). Each modem requiring service responds with a short burst of energy in its predefined time slot. These time slot responses are recorded and then normal poll messages are sent out to only the modems requesting service. The disclosure contains variations of these methods. This abstract is provided for patent searches, and not as a limitation on the scope of the claims.
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