I. Introduction oday, securing communication method is required at the emergency disaster. So, research and development of satellite/terrestrial integrated mobile communication system (STICS)[1] is performed to achieve secured and safe society. Also, this system can contribute effective use of frequency spectrum by common use of satellite and terrestrial band. Its system proposed to use high capacity geostationary satellite with 100 beams and large-scale deployable antenna (LDR) of 30m [1]. It has dual communication function that can be connected with both the terrestrial system and the satellite system is composed by using the common terminal with a handheld shape. This communication system will be especially useful for the emergency disaster such as large scale earthquake or Tsunami when terrestrial system is damaged. System concept is illustrates in Figure1.

1 fujino@ toyo. jp, nonmember. 2 yseki@ hotmail. co. jp, nonmember. 3 t. orikasa@ nict. go. jp, nonmember. 4 amane@ nict. go. jp, nonmember