Connect Internet with Sensors by 6LoWPAN
Yang Xu, Ruochen Tan, Shuai Wu, Qilin Tang · Journal of Networks · 2013
In home network design, sensors are implemented based on IEEE 802.15.4 specification , which is a standard for low-rate wireless personal networks, and use 6LoWPAN as its network protocol, which is necessary to translate its internal IPv6 address into an external IPv4 address. In order to connect home networks with the Internet, a simplified framework of mapping protocol stacks and assigning logical addresses is proposed in this paper, in which the most important is a Hush function for matching IPv6 and IPv4 addresses. In addition, we design a dynamic address protocol and a port-mapping model to handle with frequent network structure change caused by sensor regular movement or energy exhaustion. For experiment, we have built a home sensor network gateway to show the feasibility of the model and the experiment results show that our gateway has low delay time and can act quick ly in respon se to sensor movement, taking less message switching process to restructure the home network. The framework is effective and robust, even if the home network is unstable and dynamic.