5G (Fifth Generation Mobile Communication Technology), also known as 5G, is a new generation of broadband mobile communication technology characterized by high speed, low latency, and large connectivity. It is the network infrastructure for realizing the interconnection of humans, machines, and things.
The International Telecommunication Union (ITU) has defined three major application scenarios for 5G, namely Enhanced Mobile Broadband (EMBB), Ultra Reliable Low Latency Communication (URLLC), and Massive Machine Class Communication (mMTC). Enhanced Mobile Broadband (EMBB) is mainly aimed at the explosive growth of mobile Internet traffic, providing more extreme application experience for mobile Internet users; Ultra high reliability low latency communication (URLLC) is mainly aimed at vertical industry applications with extremely high requirements for latency and reliability, such as industrial control, remote healthcare, and autonomous driving; Massive Machine Class Communication (MMTC) is mainly aimed at the application needs of sensing and data collection in smart cities, smart homes, environmental monitoring, and other fields.
To meet the diverse application scenarios of 5G, the key performance indicators of 5G are more diversified. ITU has defined eight key performance indicators for 5G, among which high speed, low latency, and large connectivity are the most prominent features of 5G. The user experience rate reaches 1Gbps, latency is as low as 1ms, and the user connection capacity reaches 1 million connections per square kilometer.