IPv6 over low power wireless personal area network (6LoWPAN) neighbor discovery-based tree routing method

Abstract

The invention discloses an IPv6 over low power wireless personal area network (6LoWPAN) neighbor discovery-based tree routing method, which relates to the field of wireless sensor networks and comprises the following steps of: a, when a 6LoWPAN sensor node is added into the network, establishing a root node of tree topology, and configuring the basic information of the network to the root node; b, adding other ordinary nodes into the network; and c, forming routing. Moreover, the step c comprises the following steps of: under any one of the three conditions of leaf node invalidation or leaving, non-leaf node invalidation or leaving and node movement, triggering a routing restoring process; and under any one of the three conditions of no leaf node invalidation or leaving, no non-leaf node invalidation or leaving and no node movement, finishing the processing. In the 6LoWPAN neighbor discovery-based tree routing method, an additional routing protocol message is not required to be transmitted and received, so the bandwidth and the routing calculation overhead are reduced, energy consumption produced in the message transmission of the nodes is saved, and the energy consumption and routing overhead of the whole network are further reduced.

Description

technical field [0001] The invention relates to the field of wireless sensor networks, in particular to a tree routing method based on 6LoWPAN neighbor discovery. Background technique [0002] The Internet Engineering Task Force (IETF) established the 6LoWPAN (IPv6overLow power Wireless Personal Area Networks, IPv6 protocol stack on low-power wireless personal area network) working group in 2004. A series of technologies and standards for running the IPv6 protocol stack on the personal area network. Compared with the traditional Internet TCP / IP protocol architecture, 6LoWPAN has an additional adaptation layer in the hierarchical structure. 6LoWPAN uses the MAC (media access control sublayer) and physical layer of IEEE 802.15.4 in the lower layer, while in the The network layer and above use IETF's IPv6 protocol stack. Since the IPv6 protocol stack cannot run directly on top of 802.15.4, the purpose of the 6LoWPAN adaptation layer is to achieve seamless connection between I...

AI Technical Summary

Problems solved by technology

Although HiLow reduces the overhead, the routing efficiency is not high, because it is possible that even two adjacent nodes communicate through multiple hops through the parent node, and once some key nodes, such as the parent node fail, may cause large The network reconstruction of the area makes the overhead increase significantly

Images