Title :
Considerations on the mobile radio system architecture
Author :
Kinoshita, Kota ; Nakajima, Nobuo ; Horikawa, Izumi ; Kuramoto, Minoru
Author_Institution :
Radio Commun. Syst. Lab., NTT, Yokosuka, Japan
Abstract :
A basic architecture for a mobile radio network providing novel services and accommodating increasing subscribers is given. Three kinds of functional modules (mobility management, RF-transmission management, and call control) are introduced to facilitate system expansion, and examples of network architecture are shown. Functions and structures of information, control, and housekeeping channels are proposed to support lower-bit-rate ISDN (integrated services digital network) bearer service as well as usual voice service. Based on digital transmission techniques, such as QPSK (quadrature phase-shift keying) modulation, 8-kb/s speech codec, zone control slot, and multiple carrier amplifier, it has been shown that FDMA (frequency-division multiple-access) digital mobile systems can offer spectrum efficient and high-quality voice and data services
Keywords :
ISDN; digital radio systems; frequency division multiple access; mobile radio systems; 8 kbit/s; FDMA; QPSK; RF-transmission management; call control; digital mobile systems; digital transmission techniques; frequency-division multiple-access; integrated services digital network; lower-bit-rate ISDN; mobile radio system architecture; mobility management; multiple carrier amplifier; network architecture; quadrature phase-shift keying; speech codec; system expansion; zone control slot; Architecture; Control systems; Digital modulation; ISDN; Land mobile radio; Mobile radio mobility management; Modulation coding; Phase modulation; Phase shift keying; Quadrature phase shift keying;
Conference_Titel :
Vehicular Technology Conference, 1989, IEEE 39th
Conference_Location :
San Francisco, CA
DOI :
10.1109/VETEC.1989.40150
