| 3GPP | 3rd Generation Partnership Project |
| 5G | fifth generation |
| ACT | ancillary terrestrial component |
| AWS | advanced wireless services |
| BAS | broadcast auxiliary service |
| CAC | Center for Advanced Communications |
| CRADA | cooperative research and development agreement |
| CRPL | Central Radio Propagation Laboratory |
| CTL | Communications Technology Laboratory |
| DARPA | Defense Advanced Research Projects Agency |
| DHS | Department of Homeland Security |
| DOC | Department of Commerce |
| DOD | Department of Defense |
| DOE | Department of Energy |
| DSRC | Dedicated Short Range Communication |
| ETRI | Electronics and Telecommunications Research Institute |
| FCC | Federal Communications Commission |
| FirstNet | First Responder Network Authority |
| IEEE | Institute of Electrical and Electronics Engineers |
| IETF | Internet Engineering Task Force |
| INS2I | Institute for Information Sciences and Technologies |
| IoT | Internet of Things |
| ISO | International Standards Organization |
| ITS | Institute for Telecommunication Sciences |
| ITU | International Telecommunication Union |
| LAN | local area network |
| LTE | long-term evolution |
| MAN | metropolitan area network |
| MIMO | multiple input, multiple output |
| mm-wave | millimeter wave |
| NASCTN | National Advanced Spectrum and Communications Test Network |
| NICT | National Institute of Information and Communications Technology |
| NIST | National Institute of Standards and Technology |
| NOAA | National Oceanic and Atmospheric Administration |
| NSA | National Security Agency |
| NTIA | National Telecommunications and Information Administration |
| OSM | Office of Spectrum Management |
| PCAST | President’s Council of Advisors on Science and Technology |
| PML | Physical Measurement Laboratory |
| PMW | propagation modeling website |
| PNT | positioning, navigation, and timing |
| PSCR | Public Safety Communications Research Program |
| QAM | quadrature amplitude modulation |
| R&D | research and development |
| RF | radio frequency |
| SDARS | Satellite Digital Audio Radio Service |
| SDO | Standards Development Organizations |
| U-NII | unlicensed national information infrastructure |
| USGS | U.S. Geological Survey |
| VCAT | Visiting Committee on Advanced Technology |
| Wi-Fi | Wireless Fidelity |
| WLAN | wireless local area network |
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