Patent ID: 9306736
Filing Date: 2016-04-05
CPC Classification: H04B,H04L,Y04S

Claim Text:
1. For use in a power-line communication system, a method performed by data processing electronic circuitry, the method comprising: receiving a plurality of symbols from a plurality of endpoint circuits and over a plurality of communications channels on power lines in the power-line communication system; obtaining respective and different decryption keys from an encryption table that lists the respective and different decryption keys and corresponding assignments to the plurality of endpoint circuits; decrypting a first symbol of the plurality of symbols using a first decryption key that is assigned to a first endpoint circuit; computing, from the first symbol as decrypted using the first decryption key, a first measure of error that includes a first bit error rate; decrypting the first symbol using a second decryption key that is assigned to a second endpoint circuit; computing, from the first symbol as decrypted using the second decryption key, a second measure of error that includes a second bit error rate; comparing the first and second bit error rates to a threshold error measure; identifying, in response to the first bit error rate exceeding the threshold error measure, the first symbol as a valid symbol from the first endpoint circuit; and logging the first symbol as valid relative to the first endpoint circuit.