Power line communication system with autonomous network segments
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United States of America Patent
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N/A
Issued Date -
May 13, 2004
app pub date -
Oct 25, 2002
filing date -
Oct 27, 2001
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A plurality of access units, each coupled to a different portion of a medium voltage power line, are also coupled to a broadband signal network for receiving, and supplying, broadband communication signals from and to the broadband network and for receiving, and supplying, communication signals from and to the power line as the transmission path between the access unit and repeaters coupled to the medium voltage power line and lower voltage power lines which supply electrical power to customers' premises. The access units can also receive and transmit electromagnetic energy, e.g. radio frequency, infrared and/or optical energy, modulated with the communication signals over a transmission path different from the medium voltage power line and at least some of the repeaters can receive and transmit the so-modulated electromagnetic energy. Preferably, controllers are provided at the access units and the at least some of the repeaters to activate the electromagnetic energy transmissions when the power line signal reception at the repeaters is significantly degraded.
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