Patent ID: 9596000
Date: 2017-03-14
CPC Classifications: H04B

Claim:
1. A method for selecting an optimal central controller in a power line network, the method being applicable to a power line network comprising at least a terminal device, at least a network device, and a plurality of controllers, the controllers being respectively connectable to the terminal device and/or the network device, the controllers being electrically connected through at least a power line so that the controllers can communicate with one another through the power line, each said controller being installed with a central controller evaluation and selection software, the controllers negotiating with one another during formation of the power line network in order to determine a central controller, wherein the central controller can be any said controller and is able to execute the central controller evaluation and selection software, the method comprising the steps, to be performed by the central controller via the central controller evaluation and selection software, of: detecting and calculating connected states of the controllers in the power line network according to a plurality of parameter conditions stored in the central controller evaluation and selection software; selecting an optimal controller from the controllers according to the connected states thereof when it is determined that all the connected states of the optimal controller corresponding to all the parameter conditions are better than those of the other controllers, wherein the central controller evaluation and selection software further stores a priority sequence of the parameter conditions and, when it is determined that none of the controllers has all the connected states corresponding to all the parameter conditions better than those of the other controllers, the optimal controller is selected and assigned as the central controller according to the priority sequence of the parameter conditions, so as to let the central controller best suit the intended use of the power line network; assigning the optimal controller as the central controller; and informing other said controllers that the optimal controller serves as the central controller.