Digital mobile radio switching system

Author

Shinagawa, Noriteru ; Arita, Takemi ; Ishino, Fumiaki ; Yabusaki, Masami

Author_Institution

NTT Radio Commun. Syst. Lab., Tokyo, Japan

fYear

1990

fDate

2-5 Dec 1990

Firstpage

485

Abstract

A digital mobile communications system developed by NTT is described. This system offers various user services corresponding to ISDN services involving effective nonvoice services. It includes a nonvoice service adapter which converts modem output to baseband signals for transmission over narrowband digital radio links, and a hitless handover scheme which offers high-quality data communication services even under roaming conditions resulting from decreases in cell size. A mobile communication exchange (MCX) can be constructed by applying newly designed mobile signal equipment to the existing digital switching system

Keywords

digital radio systems; electronic switching systems; mobile radio systems; telephone exchanges; ISDN services; NTT; baseband signals; cell size; digital mobile communications; digital switching system; hitless handover scheme; mobile communication exchange; mobile radio switching system; modem output; narrowband digital radio links; nonvoice service adapter; roaming conditions; signal equipment; Baseband; Data communication; Digital communication; ISDN; Land mobile radio; Mobile communication; Modems; Narrowband; Signal design; Switching systems;

fLanguage

English

Publisher

ieee

Conference_Titel

Global Telecommunications Conference, 1990, and Exhibition. 'Communications: Connecting the Future', GLOBECOM '90., IEEE

Conference_Location

San Diego, CA

Print_ISBN

0-87942-632-2

Type

conf

DOI

10.1109/GLOCOM.1990.116559

Filename

116559