Network system for communication with plural channels, node device and concentrator for use therein, and communication method for said network system

摘要

In a network system providing communication through a multi-channel transmission path with n channels, N buffers in each of plural node devices temporarily store signals for transmission through the n channels. A channel control device alters the channels through which the signals from the buffers are sent so that the signals from plural buffers cannot be sent concurrently to the same channel. A buffer control device controls the read out of signals from the buffers through the n channels selected for signal transmission synchronously with the channel alteration. A node device receiving signals from another node device includes reception devices that receive signals from the n channels, respectively.