[20200601]IN11414_FCC批准的Ligado网络和国防部使用GPS的潜在技术问题.pdf

CRS INSIGHT Prepared for Members and Committees of Congress INSIGHTINSIGHTi i The FCC-Approved Ligado Network and Potential Technical Issues for DOD Use of GPS June 1, 2020 On April 20, 2020, the Federal Communications Commission (FCC) unanimously authorized an application by Ligado Networks LLC (Ligado) to “deploy a low-power 9.8 decibel watts (dBW) terrestrial nationwide network in the 1526-1536 MHz, 1627.5-1637.5 MHz, and 1646.5-1656.5 MHz bands of the electromagnetic spectrum that will primarily support Internet of Things (IoT) services.” These frequency bands are traditionally used for satellite operations. The Department of Defense (DOD) opposed this decisionalong with the Departments of Homeland Security, Transportation, the Interior, and Justice; the Federal Aviation Administration; and othersdue to concerns that Ligados proposed network could interfere with signals from satellites to Global Positioning System (GPS) receivers. Congress may consider the FCCs decision, as well as DOD and other federal agency concerns about the decision, as it conducts oversight of the FCC. Congress may also consider broader issues related to fifth generation (5G) mobile technologies, such as