MOBILE COMMUNICATION

Mobile communication lets people communicate with one another across different locations without needing any physical connection such as wires or cables, allowing transmission over a wide area and letting a user communicate regardless of whether they are at the office, at home, or anywhere else, including otherwise remote areas. A key feature is roaming: a user can physically move from one place to another during a call or connection without the communication being interrupted, and the installation and ongoing maintenance cost of a mobile communication network is comparatively cheap. Applications include personal communication generally, with cellular phones offering both voice and high-speed data connectivity; near-instant transmission of news across the globe within seconds; the use of the Internet of Things (IoT) to control a range of different devices from a single device, such as controlling home appliances remotely from a mobile phone (home automation); and, in education, enabling smart classrooms, online availability of study notes, and monitoring of student activity. The technology itself has evolved through successive generations -- 2G, 3G, 4G, 5G, along with WiMAX, Wibro, EDGE and GPRS -- each increasing the achievable speed of communication and the geographic range of coverage, while connectivity issues have steadily decreased thanks to more reliable, more secure connections. The Global Positioning System (GPS) and the Global System for Mobile communication (GSM) both play an important supporting role within mobile communica …