Abstract: The invention is to provide a wireless digital communication system and method thereof using a first protocol layer, a second protocol and a third protocol layer for constructing a packet, wherein the first protocol layer is used to convert the packet into signals transmitted by a transmission medium, and the second protocol layer having addressing capability provides routing and switching functions necessary to move data from any two nodes in a network, and the third protocol layer is used to build a pairing mechanism between intermediary nodes in the network and between the original network with an external system on the packet. The three protocol layers of the present invention is designed according to a pairing mechanism such that the wireless product using the pairing mechanism can use the simplified protocol of the present invention instead of the conventional redundant communication protocol model.