METHOD FOR SELF-LEARNING OF CROSS-FREQUENCY BAND POWER LINE COMMUNICATION FREQUENCY

摘要

The present invention relates to a method for cross-frequency band power line communication, in particular to a method for self-learning of a cross-frequency band power line communication frequency. The frequency range applied in the method is 150 kHz-12 MHz. The method comprises: (1) determining a default working frequency set; (2) using a leading sequence to conduct a preselection in the default working frequency set, screening out default working frequencies incapable of correctly detecting the leading sequence, while using the default working frequencies capable of correctly detecting the leading sequence as potential working efficiencies; (3) at the potential working efficiencies, transmitting a control packet between a master station and a slave station to determine an optimal working frequency. The method of the present invention enables self-learning of the optimal frequency (a central frequency point and bandwidth) within a wide frequency spectrum range, so as to enable self-adaption to the frequency and data rate of a channel according to the actual channel condition, thus improving effectiveness, expanding the coverage area, and reducing human intervention.