최근 다양한 무선통신 서비스가 출현함에 따라 무선호출 서비스의 경쟁력이 요구된다. 본 논문에서는 가격 및 기술 경쟁력을 높이기 위해 양방향 무선호출 위성지구국 시스템을 제안하였고 위성링크를 설계하였으며 무궁화위성을 이용한 무선호출망에 대해 설명하였다. 또한 단말국의 비용을 줄이기 위해 중심국과 단말국의 크기를 다르게 설계하였고, 인바운드와 아웃바운드의 전력배당 방법을 제안하였으며 본 위성링크설계에 이용하였다. 링크설계 결과 강우시간율 0.043%에서 중심국과 단말국의 안테나 크기는 3.7m와 1.2m이고 HPA 크기는 10.37W와 2.0W이며 아웃바운드와 인바운드의 전력배당은 84%와 16%로 설계되었다. 또한 강우시간율 0.02%에서 중심국과 단말국의 안테나 크기는 3.7m와 1.8m 그리고 아웃바운드와 인바운드의 전력배당은 63%와 37%로 설계되었다.
Recently, appearing of various wireless telecommunications services, the competitive power of paging service is requested. In this paper, two-way paging earth station for satellite was proposed and designed to enhance the competitive power of cost and technique, and the link budget of this two-way paging networks using Koreas at was discussed. To reduce the cost of remote station, the antenna and HPA size of Hub and remote station were differently designed, and an idea of power allocations of inbound and outbound carriers was proposed and utilized in this link budget of two-way earth station for using satellite. The results of this link budget were follows. At the 0.043% time rate of rain, antenna size of Hub and remote station were 3.7m and 1.2m, the HPA size of Hub and remote station were 10.37W and 2.0W, and power allocations of outbound and inbound were 84% and 16% respectively. At the 0.02% time rate of rain, the antenna size of Hub and remote station were 3.7m and 1.8m and power allocations of outbound and inbound were 63% and 37% respectively.
