Evolved Universal Terrestrial Radio Access (E-UTRA); Radio Resource Control (RRC); Protocol specification的相关协议为()
UTRAN(UMTS Terrestrial Radio Access Network)执行RAN的功能,其外部接口包括().
The terrestrial system of GMDSS consists of().
The existing terrestrial radio system has a number of basic flaws which().
The existing terrestrial radio system has a number of basic flaws which().