The present document specifies the characteristics of the physical layer procedures used for family G enhanced of the satellite component of UMTS (S-UMTS-G). It is based on the FDD mode of UTRA defined by TS 125 211 [4]@ TS 125 212 [i.1]@ TS 125 213 [i.2]@ TS 125 215 [i.3]@ TS 125 214 [5]@ TS 125 331 [i.4] and TS 125 433 [6] and adapted for operation over satellite transponders. Furthermore@ it specifies enhancing features optimizing the basic G family radio interface performances over satellite and new functions.