| 摘要 |
Disclosed are a power control method, apparatus, and system. The method comprises: obtaining, by using a vectoring control entity, a power control factor Dii k of an ith transmit end on a kth subcarrier, the ith transmit end being a transceiver of M transceivers located at a central office, 1≤k≤Κ, and k indicating the number of subcarriers; and sending the power control factor Dii k to the ith transmit end, so that if it is determined that the power control factor is less than a power gain factor gi k, on the kth subcarrier, of a signal currently sent by the ith transmit end, the ith transmit end modifies, according to the power control factor Dii k, the power gain factor gi k of the currently sent signal, so that a power gain factor g'i k after modification is less than or equal to the power control factor Dii k. Therefore, problems of complex control and decrease in signal transmission performance of an entire line in a conventional power control method can be solved. |
