Research And Implementation Of Internet Of Things Self Organizing Network Platform Based On 6LoWPAN

Wireless embedded devices,which have the characteristics of IP network technology,battery power supply,resource limited and low-power consumption,are one of the trends in the development of the Internet of things.They are typically deployed in a distributed way to form a wireless sensor network(WSN).Wireless communication technology currently used by WSN is mostly non IP technology,and its internal nodes cannot communicate with the IP network.Fortunately,The 6LoWPAN protocol realizes the conversion communication between the IEEE 802.15.4 protocol and the IPv6 protocol It can be implemented in battery powered,resource constrained,tow-power WSN wireless embedded devices to realize the communication between nodes and IPv6 networks.It is a potential point for the development of the Internet of things.However,the application of 6LoWPAN protocol is still in its initial stage,and there are not many related applications.Therefore,it is significant to study the design of the Internet of things self organizing network platform based on 6LoWPAN protocol.Firstly,the architecture and protocol stack of 6LoWPAN network are studied.According to the three 6LoWPAN network types of self-organized non IP network communication,basic IP network communication and IP network communication with local server links.A networking design of basic IP network communication based on self organizing network communication network is proposed.In the process of establishing a network according to the networking scheme,software and hardware design of nodes and gateway nodes is performed.Three hardware designs of the existing model are discussed.In order to reduce the cost and volume,a single chip model is used.In terms of software running on nodes,Contiki system is selected as node software.The popular border gateway implementation mode and corresponding software structure are analyzed.The software design of the gateway node is achieved by selecting 6LBR open source gateway software.Finally,the designed 6LoWPAN ad hoc network platform is tested.The test process contains the transplant test and the communication test.Transplant test verified the successful initialization of Contiki system kernel and protocol stack by printing information through the serial port.The communication test uses the client-server model to verify the success of the end to end communication and statistics for the parameters of the network by sending the quantity packets regularly.Through the way of Ping the gateway node and the node IP v6 address,using Wireshark software to analyze communication packets,using Firefox Copper plug-in to access gateway node CoAP services to verify the successful operation of the ad hoc network platform.The experimental results demonstrate that the 6LoWPAN Internet of things self organizing network platform designed in this paper can achieve the corresponding functions.