Power line communication system
First Claim
1. A method for communication over a network of power lines, comprising:
- establishing a communication link within a selected frequency band over the network of power lines between a first transceiver coupled to the network and a second transceiver coupled to the network; and
transmitting a first signal over the link from the first transceiver to the second transceiver at a transmission power level that is sufficiently strong that the signal can be decoded by the second transceiver, but is attenuated sufficiently when it reaches a third transceiver coupled to the network so that the third transceiver can receive a second signal over the network in the selected frequency band substantially without interference by the first signal.
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Accused Products
Abstract
A method for communication over a network of power lines (34), including establishing a communication link within a selected frequency band over the network between a first transceiver (32B) coupled to the network and a second transceiver (32C) coupled to the network. The method further includes transmitting a first signal over the link from the first transceiver to the second transceiver at a transmission power level that is sufficiently strong that the signal can be decoded by the second transceiver, but is attenuated sufficiently when it reaches a third transceiver (32E) coupled to the network so that the third transceiver can receive a second signal over the network in the selected frequency band substantially without interference by the first signal.
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Citations
45 Claims
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1. A method for communication over a network of power lines, comprising:
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establishing a communication link within a selected frequency band over the network of power lines between a first transceiver coupled to the network and a second transceiver coupled to the network; and transmitting a first signal over the link from the first transceiver to the second transceiver at a transmission power level that is sufficiently strong that the signal can be decoded by the second transceiver, but is attenuated sufficiently when it reaches a third transceiver coupled to the network so that the third transceiver can receive a second signal over the network in the selected frequency band substantially without interference by the first signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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32. A transceiver, for communication over a network of power lines, comprising:
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a communication controller, adapted to establish a communication link over the network with a first receiver coupled to the network, and to generate a first signal for transmission over the link to the first receiver in a selected frequency band; and level-setting circuitry, adapted to control a power level of the first signal so that the first signal is sufficiently strong to be decoded by the first receiver, but is attenuated sufficiently when it reaches a second receiver, also coupled to the network, so that the second receiver can receive a second signal over the network in the selected frequency band substantially without interference by the first signal. - View Dependent Claims (33, 34, 35, 36, 37, 38)
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39. A method for communication over a network of power lines, between a plurality of transceivers of a data transmission network, in which each two transceivers can communicate through the power lines, comprising:
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transmitting a first signal over the power lines from a first transceiver to a second transceiver of the data network, in a selected frequency band; and transmitting a second signal over the power lines, from a fourth transceiver to a third transceiver of the data network, in the same selected frequency band, concurrently with the transmission of the first signal. - View Dependent Claims (40, 41, 42, 43, 44, 45)
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Specification