4G communication technology concept
The fourth generation of mobile phone mobile communications standards (4G) refers to the fourth generation of mobile communications technology. It is a broadband access and distributed network with a download speed of 100 Mbps and an upload speed of 20 Mbps. It can not only provide high-quality imaging services to full-speed mobile users, but also achieve three. It can not only provide high-quality transmission of dimensional images, but also provide comprehensive functions such as positioning and timing, data collection, and telemedicine in addition to communication information.
4G communication technology characteristics
(1) Fast speed and wide spectrum. The target rate of the 4G system is significantly higher than that of 3G. For large-scale high-speed mobile users (trains or cars on highways, the general speed is <250km>
(2) Integration of multiple communication services. The high-speed mobile communication network based on IPv6 is mainly based on mobile data, changing the traditional concept of phone-based communication. 4G can be called “multimedia mobile communications”. It can not only seamlessly connect personal communications, information systems, entertainment and broadcasting services into a whole to meet the various needs of users, but also enable data, voice, video, etc. Large amounts of information are transmitted over high-bandwidth channels.
(3) Seamless roaming. The 4G system achieves a globally unified standard, enabling “seamless connections” between various media, mobile terminals and networks, integrating different modes of wireless communications, such as radio and television networks, cellular mobile networks, satellite networks, wireless LANs and Bluetooth, etc. are integrated together to truly enable a mobile phone to communicate anywhere in the world, providing a communication basis for transnational remote consultation.
(4) The 4G system will also have the characteristics of open interfaces, multi-network and multi-protocol coexistence, and smooth transition from 2G and 3G. Low-speed and high-speed users and various terminal devices can coexist and interoperate, allowing users to realize the transition to the 4G era with minimal investment. This provides an upgradeable interface for users currently using 3G remote consultation systems.
Keywords in this article: 4gdtu