1. A time division multiple network access method, from the perspective of a communication device comprising at least one protocol stack having a physical layer and a medium access control (MAC) layer, and at least one application unit for performing communication through the protocol stack, the method comprising: applying a first parameter to the protocol stack and a first attribute to the application unit; accessing a first network for a first hour after the applications; switching the first parameter into a second parameter and the first attribute into a second attribute; and accessing a second network for a second hour after the switching.