Patent ID: 7864658
Filing Date: 2011-01-04
Classification: H04B,H04L,Y02D

Abstract:
1. A multicarrier communication method using a balanced transmission line that interconnects sending terminal equipment and receiving terminal equipment, the multicarrier communication method comprising: measuring a balancing and an SN-ratio of the balanced transmission line; and controlling a communication mode in accordance with the measured balancing and the measured SN-ratio of the balanced transmission line, wherein the controlling of the communication mode includes controlling transmitting power for carriers to be used in a communication in accordance with the measured balancing and the measured SN-ratio of the balanced transmission line, the controlling of the communication mode includes comparing the measured balancing and the measured SN-ratio with predetermined first and second reference values, respectively, the first reference value being a balancing-related reference value and the second reference value being an SN-ratio-related reference value, and wherein (a) a carrier having balancing equal to or greater than the first reference value and an SN-ratio equal to or greater than the second reference value is used without a change in transmitting power for the carrier; (b) a carrier having balancing equal to or greater than the first reference value and an SN-ratio less than the second reference value is used with an increase in transmitting power for the carrier or excluded from the communication; (c) a carrier having balancing less than the first reference value and an SN-ratio equal to or greater than the second reference value is used with a decrease in transmitting power for the carrier; and (d) a carrier having balancing less than the first reference value and an SN-ratio less than the second reference value is excluded from communication.