Internet Of Things In Lightweight Tcp / Ip Protocol Stack Design And Realization

With the current development of network technology, the concept of the Internet of Things attracted widespread attention. The internet of things has many features make it widely used in various industries, such as transport logistics, intelligent health care, intelligent environments, social applications and future applications. It has completely changed the enterprise or work unit efficiency, management mechanism and the way people live and conduct mode. Although there are a lot of organizations studying on it, they have given the different architecture and the hierarchy is not very clear, so it's very difficult to achieve mutually compatible. Therefore, it is imminently to set a compatible architecture of the Internet and the Internet of Things.This paper proposes a compatible architecture of the next generation of Internet and the Internet of Things on the basis of existing work of IETF and IEEE working groups. This architecture has the compatibility, intelligence, simplicity and efficiency. The layer of this architecture is similar to the original Internet architecture which has a five-layer structure (the physical layer, data-link layer, network layer, transport layer and application layer), but changes in the layers are:physical layer and data-link layer use 802.15.4 standards; network layer uses the IPv6 protocol so as to ensure that each node of The Internet of Things at least has one IP address, it also adds the RPL routing protocol which is used in The Internet of Things, in addition, the most important improvement in network layer is the introduction of 6Lowpan protocol, when the system needed, it can make packet fragmentation and header compression; transport layer uses a simplified TCP/UDP protocols to meet the special needs of transfer of The Internet of Things; and the application layer uses CoAP protocol which is more concise and efficient compared with the original application layer protocol.This paper is unfolded rounding the research of the lightweight TCP/IP protocol stack of The Internet of Things, gives the research background and the research situation, analysis and design a unified architecture of lightweight TCP/IP protocol stack toward to the Internet and The Internet of Things, and implements a lightweight TCP/IP protocol stack based on 6LoWPAN.It implements a 6LoWPAN star network topology on the IRIS hardware platform with theTinyOS2.1 system. The network was tested through setting up the experimental test environment. Tests show that the lowpower node can normally exchange data with external IPv6.