Modularize IPv6 Protocol Stack And Implement Ultra-lightweight One For Wireless Sensor Network

When IPv6 protocol stack is implemented in various embedded equipments of low cost network applications, it ought to tailor useless functions defined in IPv6 protocols. One maybe tailor some functions, and another maybe tailor else functions. So, IPv6 protocol stack must migrate to an embedded- equipments for every low cost network applications. In this paper, Firstly, the functions which are permitted to be cut are listed, and the reasons are given. Secondly, IPv6 protocol stack is modularized, and a frame easily to migrate is designed. Finally, an ultra-lightweight IPv6 protocol stack is implemented for wireless sensor network, and it prove that the frame is work.Communication node of wireless sensor network lacks hardware resources, such as memory spaces and power of MCU. And energy proved for it by battery is a very little. This paper study the feature of the node in wireless sensor network, such as tree topology and the functions of adaptation between IPv6 protocol stack and MAC defined by IEEE-802.15.4 standard, and design an ultra-lightweight IPv6 protocol stack which is greatly tailored for wireless sensor networks according to 6L0WPAN drafts. The functions tailored include some of IPv6 extension headers, some of ICMPv6 error messages and information messages, and some of functions of neighbor discovery protocol. Thus, the ultra-lightweight IPv6 protocol stack has maximally reduced the codes space and the overheads of the communication among the nodes just for IPv6 protocols, and it's fit for the communication node of wireless sensor network.More, the new neighbor discovery applied to adaptation is present after contrasting between the neighbor features of IPv6 neighbor discovery and the neighbor features of wireless sensor network. This technique can more reduce the codes space and the overheads of communication among the nodes just for network protocols, and it can't minify the node's IPv6 function.