Communicating over power distribution media
First Claim
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1. A method, comprising:
- configuring a first communication module coupled to a Heating, Ventilation, and Air Conditioning (HVAC) power distribution medium to use signals that propagate between an Alternating Current (AC) domestic power distribution medium and the HVAC power distribution medium, wherein the signals are modulated according to a modulation scheme that enables direct uninterrupted propagation from the AC domestic power distribution medium to the HVAC power distribution medium;
configuring a modulation scheme of a second communication module coupled to the AC domestic power distribution medium and configured to provide signals used by the first communication module according to the modulation scheme that enables direct uninterrupted propagation from the AC domestic power distribution medium to the HVAC power distribution medium;
wherein said configuring the modulation scheme of the second communication module comprises selecting at least one pair of subcarrier frequencies for Frequency Shift Keying (FSK) modulation from a plurality of subcarrier frequencies used for Orthogonal Frequency Division (OFDM) modulation.
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Abstract
A system includes a first communication module to be coupled to a first transmission medium for distributing power using a voltage waveform having a first amplitude; and a second communication module to be coupled to a second transmission medium for distributing power using a voltage waveform having a second amplitude different from the first amplitude, the second transmission medium being coupled to the first transmission medium. Each of the first and second communication modules is configured to use signals that propagate between the first and second transmission media.
16 Citations
20 Claims
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1. A method, comprising:
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configuring a first communication module coupled to a Heating, Ventilation, and Air Conditioning (HVAC) power distribution medium to use signals that propagate between an Alternating Current (AC) domestic power distribution medium and the HVAC power distribution medium, wherein the signals are modulated according to a modulation scheme that enables direct uninterrupted propagation from the AC domestic power distribution medium to the HVAC power distribution medium; configuring a modulation scheme of a second communication module coupled to the AC domestic power distribution medium and configured to provide signals used by the first communication module according to the modulation scheme that enables direct uninterrupted propagation from the AC domestic power distribution medium to the HVAC power distribution medium; wherein said configuring the modulation scheme of the second communication module comprises selecting at least one pair of subcarrier frequencies for Frequency Shift Keying (FSK) modulation from a plurality of subcarrier frequencies used for Orthogonal Frequency Division (OFDM) modulation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method, comprising:
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configuring a first communication module coupled to a Heating, Ventilation, and Air Conditioning (HVAC) power distribution medium to use signals that propagate between an Alternating Current (AC) domestic power distribution medium and the HVAC power distribution medium, wherein the signals are modulated according to a modulation scheme that enables direct uninterrupted propagation from the AC domestic power distribution medium to the HVAC power distribution medium; configuring a modulation scheme of a second communication module coupled to the AC domestic power distribution medium and configured to provide signals used by the first communication module according to the modulation scheme that enables direct uninterrupted propagation from the AC domestic power distribution medium to the HVAC power distribution medium; configuring a third communication module coupled to the HVAC power distribution medium to use signals that propagate between the AC domestic power distribution medium and the HVAC power distribution medium; communicating in parallel between the first and second communication modules and between the first and third communication modules; wherein said configuring the modulation scheme of the second communication module comprises using a first pair of subcarrier frequencies for Frequency Shift Keying (FSK) modulation for communication with the first communication module and using a different second pair of subcarrier frequencies for Frequency Shift Keying (FSK) modulation for communication with the third communication module.
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19. A system, comprising:
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a first communication module coupled to a Heating, Ventilation, and Air Conditioning (HVAC) power distribution medium and configured to use signals that propagate between an Alternating Current (AC) domestic power distribution medium and the HVAC power distribution medium, wherein the signals are modulated according to a modulation scheme that enables direct uninterrupted propagation from the AC domestic power distribution medium to the HVAC power distribution medium; a second communication module coupled to the AC domestic power distribution medium and configured to provide signals used by the first communication module according to the modulation scheme that enables direct uninterrupted propagation from the AC domestic power distribution medium to the HVAC power distribution medium; wherein the second communication module configured to provide signals used by the first communication module according to the modulation scheme comprises the second communication module configured to select at least one pair of subcarrier frequencies for Frequency Shift Keying (FSK) modulation from a plurality of subcarrier frequencies used for Orthogonal Frequency Division (OFDM) modulation.
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20. A system, comprising:
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a first communication module coupled to a Heating, Ventilation, and Air Conditioning (HVAC) power distribution medium configured to use signals that propagate between an Alternating Current (AC) domestic power distribution medium and the HVAC power distribution medium, wherein the signals are modulated according to a modulation scheme that enables direct uninterrupted propagation from the AC domestic power distribution medium to the HVAC power distribution medium; a second communication module coupled to the AC domestic power distribution medium and configured to provide signals used by the first communication module according to the modulation scheme that enables direct uninterrupted propagation from the AC domestic power distribution medium to the HVAC power distribution medium; a third communication module coupled to the HVAC power distribution medium and configured to use signals that propagate between the AC domestic power distribution medium and the HVAC power distribution medium; wherein the second communication module configured to provide signals used by the first communication module according to the modulation scheme comprises the second communication module configured to use a first pair of subcarrier frequencies for Frequency Shift Keying (FSK) modulation for communication with the first communication module and using a different second pair of subcarrier frequencies for Frequency Shift Keying (FSK) modulation for communication with the third communication module, wherein the communications between the first and second communication modules and between the first and third communication modules are in parallel.
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Specification