Radio Sensor Detection of Interference to Satellite Earth Station in Frequency Spectrum Sharing

In recent years, the growing demand for wireless communications has led to the depletion of frequency resources. Frequency sharing technology is attracting attention as a solution to this problem. Dynamic frequency sharing is a mechanism whereby one frequency band is used by multiple systems in different time and space. Beyond5G is considering sharing the millimeter wave band with satellite communications, and if it becomes clear that this frequency resource can also be allocated and used for mobile communications systems, expectations for frequency sharing will increase. The expectation for frequency sharing will increase when it becomes clear that this frequency resource can be allocated and used for mobile communication systems. In the dynamic frequency sharing, the first priority is to protect existing systems that have already been issued radio station licenses. Technology is needed to ensure that radio waves emitted by the secondary system do not interfere with primary systems, and among these is sensing technology to detect interference from the secondary system. When the secondary system’s interference is detected by this technology, the administrator of the secondary system is notified and the transmission of the secondary system is stopped. Assuming that the new space exploration satellite communication is used for the primary system and the 5G system is used for the secondary system, the application of radio sensors to deep space exploration satellite communication is assumed.In this paper, focusing on the sensing technology of interference detection, we assume dynamic frequency sharing between space exploration communications and ground systems, and propose a radio sensor to detect interference from the ground system to the satellite exploration ground station.