Patent ID: 8248966
Filing Date: 2012-08-21
Classification: H04L,H04W,Y02D

Abstract:
1. An address assignment method of a mobile node, for hierarchical routing in a low-power wireless personal area network (LoWPAN), comprising: (a) classifying a plurality of fixed nodes in a hierarchy; (b) designating a management node and a head node among the fixed nodes, the head node having a lower level than the level of the management node; (c) determining if a mobile node can communicate, with the head node; and (d) assigning an address to the mobile node through a neighboring head node, which can communicate with the mobile node, when the mobile node cannot communicate with the head node, wherein the address assignment method further comprises the following steps when the mobile node can communicate with the head node in step (c): allowing the mobile node to request network participation approval from the head node; allowing the head node to request an address of the mobile node from the management node; allowing the management node to assign the address of the mobile node to the head node; and allowing the head node to approve network participation of the mobile node.