In a wireless communication network, a node communicates with a central communication unit via at least one access point. An operating method of the communication node includes receiving, at the node, a wireless signal from the access point; determining, by the node, channel quality information based on the received wireless signal; and determining, by the node, an order of active channels ranked according to the determined channel quality. The operating method further includes selecting, by the node, an active channel for transmitting wireless signals in accordance with the determined order; and transmitting, by the node, wireless signals on the selected, active channel. The access point is configured to filter a message. When operating the access point in a beacon transmit mode, the access point transmits wireless beacon data to the node. In a listening mode, the access point relays data received from the node to the central communication unit.