Wireless transmission synchronization using a power line signal
First Claim
1. A method for synchronizing transmissions of a plurality of faulted circuit indicators (FCIs), comprising:
- determining a time delay from a zero crossing of a power line signal;
obtaining network information from at least one FCI from the plurality of FCIs;
identifying a proximate FCI, which is closest to a gateway based on at least one link parameter;
assigning the determined time delay to the proximate FCI; and
receiving confirmations that at least one FCI received the determined time delay, and has synchronized transmissions based on the determined time delay and the zero crossings of the power signal.
1 Assignment
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Accused Products
Abstract
A gateway may be configured to synchronize transmissions of a plurality of faulted circuit indicators (FCIs). The gateway may determine a time delay from a zero crossing of a power line signal and obtain network information from the at least one FCI from the plurality of FCIs. The gateway may identify a proximate FCI that is closest to a gateway based on at least one link parameter, and assign the determined time delay to the proximate FCI. The gateway may receive confirmations that at least one FCI received the determined time delay, and has synchronized transmissions based on the determined time delay and the zero crossings of the power signal.
153 Citations
25 Claims
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1. A method for synchronizing transmissions of a plurality of faulted circuit indicators (FCIs), comprising:
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determining a time delay from a zero crossing of a power line signal; obtaining network information from at least one FCI from the plurality of FCIs; identifying a proximate FCI, which is closest to a gateway based on at least one link parameter; assigning the determined time delay to the proximate FCI; and receiving confirmations that at least one FCI received the determined time delay, and has synchronized transmissions based on the determined time delay and the zero crossings of the power signal. - View Dependent Claims (2, 3, 4, 5)
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6. A gateway, comprising:
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a communication interface; a memory configured to store instructions; and a processor, coupled to the communications interface and memory, configured to execute the instructions stored in the memory to; determine a time delay from a zero crossing of a power line signal, obtain network information from the at least one Faulted Circuit Indicator (FCI) from the plurality of FCIs, identify a proximate FCI, which is closest to a gateway based on at least one link parameter, assign the determined time delay to the proximate FCI, and receive confirmations that at least one FCI received the determined time delay, and has synchronized transmissions based on the determined time delay and the zero crossings of the power signal. - View Dependent Claims (7, 8, 9, 10)
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11. A method to synchronize transmissions, comprising:
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receiving a request for network information from a gateway; transmitting network information in response to the received request; receiving a time delay from an adjacent fault condition indicator (FCI) or gateway; synchronizing transmissions according to the received time delay and a frequency based on zero crossings of a power line signal; and providing fault condition information over the synchronized transmissions. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A faulted circuit indicator (FCI), comprising:
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a power line sensor; a digital interface coupled to the power line sensor; a wireless communication interface; a memory configured to store instructions; a processor, coupled to the digital interface, the communications interface, and the memory, configured to execute the instructions stored in the memory to; receive a request for network information from a gateway, transmit network information in response to the received request, receive a time delay from an adjacent FCI or gateway, synchronize transmissions according to the received time delay and a frequency based on zero crossings of a power line signal, and provide fault condition information over the synchronized transmissions; and a backup power source coupled to the processor, the memory, the power line sensor, the digital interface, and the wireless communication interface. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25)
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Specification