The internet of things (IoT) is the network of physical devices, vehicles, buildings and other items—embedded with electronics, software, sensors, and network connectivity that enables these objects to collect and exchange data.In 2013 the Global Standards Initiative on Internet of Things (IoT-GSI) defined the IoT as "the infrastructure of the information society." The IoT allows objects to be sensed and controlled remotely across existing network infrastructure, creating opportunities for more direct integration of the physical world into computer-based systems, and resulting in improved efficiency, accuracy and economic benefit when IoT is augmented with sensors and actuators, the technology becomes an instance of the more general class of cyber-physical systems, which also encompasses technologies such as smart grids, smart homes, intelligent transportation and smart cities. Each thing is uniquely identifiable through its embedded computing system but is able to interoperate within the existing Internet infrastructure.
OTA (over the air)is a data-value-added service that enables users to obtain personalized information services by dynamically downloading, deleting, and updating the business menus in the SIM card through a mobile terminal or a server(online). OTA service (Over-the-Air Technology) is a technology face of mobile communication (GSM or CDMA).
The air interface can use WAP, GPRS, CDMAlX and SMS technology. Through the OTA download technology, mobile phone users can download various service menus provided by the network to the mobile phone according to personal preferences, and can also customize the specific service according to their own wishes.