“…In 1927, at the ITU Congress held in Washington, DC, for the first time, all kinds of radio services were divided into dedicated frequency bands to prevent and reduce mutual interference. Subsequently, radio regulations were formulated and revised at subsequent radio administrative conferences, which are still in use today (Ahmad et al, 2022). It has relevant permanent bodies, among which the Consultative Committee on International To promote the wireless communication business, and even the entire communication business to develop faster and better, to meet the wireless users, especially the urgent increase of mobile users, wireless services of all kinds of increasing needs, human beings must make full use of frequency resources.…”