Research and Design of IOT Gateway
Dawei Xu, LiPing Yang, Jiang Li · Advances in computer science research · 2015
Things gateway can perceive protocol conversion between networks and communications networks and different types of networks, both wide-area connectivity, local interconnect can be achieved.Research and design of Things embedded gateway implementations, is to build the entire architecture of Things crucial step.Gateway is built on top of the network layer protocol converters, and embedded systems with a dedicated and strong, real-time, high reliability, low power consumption, small size and low cost, thus greatly increasing the use of embedded gateway application flexibility and reduces costs. IOT ArchitectureThings layered network communication system architecture, including the perception of extension systems, transmission systems, operations management systems and applications, supporting different communication protocols on different levels.Perception extension system includes sensing and control technology, as well as by the perception extends layer device gateways support a variety of network -aware extension includes Lonworks, UPnP, Zigbee and other communication protocols, including [1].Sensing devices can be connected by a variety of access technologies to a core network, remote transmission of data.Operations management system for the facility within the scope of things, including the applications and business management support systems [2].Application metering system provides statistics for end users, remote monitoring and control, intelligent interaction and other types of business expansion.Business management support system to achieve user management, security, authentication, authorization, and accounting functions. IOT Gateway HierarchyThings gateway supports multiple communication protocols perception extends between devices and data types, to achieve a variety of sensing devices convert data communication between an extended formats for uploading unified data format, while the lower reaches of the acquisition or extension of the network -aware control commands are mapped to produce messages that meet specific device communication protocol.Things gateway device perception extends unified control and management , to the upper shield the underlying heterogeneity of perception extend the network is divided into four layers , namely, the business service layer , standard message constitute layer protocol adaptation layer and extending layer perception. A. Business Services layerAnd a message sending module receiving module consists message.Standard message receiving module receives a message from IOT operations management system, will deliver the message to the standard message of the constituent layers.Messaging module is responsible for the operations management system to reliably deliver sensing data collected extended network.This layer receives the message format and the message sent must meet the standards [3]. B. Standard message constituent layersBy the message parsing module and a message conversion module.Standard message parsing module parse messages from the business services layer, call the message conversion module