Learn in the textbookMobile Wide-Area Communication and Transmission Performance
Definition5G is the fifth-generation mobile communication system that follows LTE (4G); besides high speed and large capacity, it features low latency and massive simultaneous connections.
ExplanationLatency (遅延) is the wait between sending data and its arrival at the other end, and a network with little of it suits uses that need an instant response, such as remote operation. A single base station area can also connect huge numbers of devices at once, so 5G is expected to serve as the communication base for IoT systems that use many sensors.
AnalogyLike a road with many more lanes, short waits at merges, and room for an enormous number of cars at once.
Memory hookThe G stands for Generation, not Giga. 5G simply means "fifth generation."