Method of network subscription in a wireless network

A method of constructing, in a distributed manner, a tree-structured wireless network (WN) comprising routers and end devices, where a router is a network device that can have child devices and an end devices is a network device that cannot have any child device, wherein a network device requests a router for network subscription as a child device after receiving a beacon signal transmitted from neighboring routers, which contains network synchronization and networking information, and the router accepts network subscription of the network device by allocating the network device an address in an address space allocated to the router for subscription of child devices, the method comprising:

• (A) by a router, dividing an address space allocated to the router for subscription of child devices into an address space for subscription of child routers and an address space for subscription of child end devices, and respectively dividing each address space for subscription of child routers and child end device into a general address space and a special address space;
• (B) determining, by the router, a general address or a special address for child end devices, which is allocated to the router for subscription of the child end devices based on a request for network subscription, and in response to determining a general address or a special address for the child end devices by the router, accepting a network subscription of a network device, based on whether the network device requests network subscription as a child end device for the first time or a network re-subscription as a child end device due to network disconnection after network subscription;
• (C) determining, by the router, a general address and a special address for child routers, which is allocated to the router for subscription of a child router based on a request for network subscription, and in response to determining a general address and a special address for the child end router, by the router, accepting a network subscription of a network device, based on whether the network device requests network subscription as a child router for the first time or network re-subscription as a child router due to network disconnection after network subscription;
• and
• (D) by the router, converting some of child end devices of the router to child routers of the router for provision of network scalability.