[20220405]IF11251_第五代（5G）移动技术对国家安全的影响 .pdf

https:/crsreports.congress.gov Updated April 5, 2022National Security Implications of Fifth Generation (5G) Mobile Technologies The fifth generation (5G) of mobile technologies will increase the speed of data transfer and improve bandwidth over existing fourth generation (4G) technologies, in turn enabling new military and commercial applications. 5G technologies are expected to support interconnected or autonomous devices, such as smart homes, self-driving vehicles, precision agriculture systems, industrial machinery, and advanced robotics. 5G for the military could additionally improve intelligence, surveillance, and reconnaissance (ISR) systems and processing; enable new methods of command and control (C2); and streamline logistics systems for increased efficiency, among other uses. As 5G technologies are developed and deployed, Congress may consider policies for spectrum management and national security, as well as implications for U.S. military operations. Spectrum Management 5G technologies plan to use three segments of the electromagnetic spectrum (“the spectrum”): high band (also called millimeter wave, or MMW), which operates between around 24 and 300 GHz; mid band, which