Abstract: Provided is a method of subscribing, by a terminal, to a network as a router or an end device in a wireless network (WN) having a tree structure including routers and end devices. Each router receives, from a parent router thereof, addresses which are usable independently for child routers and child end devices thereof, and classifies the addresses into a general address and a special address. A terminal wishing to subscribe to a network may subscribe to the network by using a special address of an end device, only when the terminal is unable to subscribe to the network by using a general address of the end device, thereby reducing depletion of addresses to be used for terminal subscription and facilitating network subscription of the end device.

Abstract: Provided is a network self-construction method of connecting network devices to a specific network in a wireless application environment in which network devices must be divided into multiple networks in the same space. An access point (AP) controls network association of the network devices by transmitting a beacon signal into which information indicating association permission or non-permission of a network operated by the AP is inserted. A system manager associates the network devices with a specific network through the AP. When the network construction is completed, the system manager disables the AP from permitting additional network association. By repeating these steps, new networks are sequentially constructed. The system manager performs network construction by dividing the network devices into multiple networks in a desired structure and supports additional network association of network devices and transfer to other networks.

Abstract: Provided is data signal transmitting method and data signal receiving method in a wireless communication system. A method of transmitting and receiving data signal in a wireless communication system by changing a transmission speed and a payload size included in the data signal according to an operation environment is disclosed.