A wireless local loop system based on wideband CDMA technology

Author

Young Ki Yoon ; Ulema, Mehmet

Author_Institution

IMT-2000 Syst. Dev. Group, Daewoo Telecom´´s R&D Centre, South Korea

Volume

37

Issue

10

fYear

1999

fDate

10/1/1999 12:00:00 AM

Firstpage

128

Lastpage

135

Abstract

This article describes a wireless local loop system based on wideband CDMA technology. The unique features of CDMA technology make it a formidable alternative for fixed wireless telephone applications. The W-CDMA technology used by this WLL system is selected to provide primarily ISDN-like services and data rates to subscribers. This technology also provides a smooth transition into the third generation wireless technology. The air interface used in this WLL system is an interim TTA standard, which specifies a CDMA-based protocol operating in the 2.30-2.40 GHz band. The standard allows two types of bandwidth (5 and 10 MHz). The WLL system described in this article includes the WLL gateway switch, the radio port controller and the radio interface unit. The gateway switch connects the radio system to the PSTN and ISDN. The RPC provides concentration and control functions to a number of base stations called RPs. The RIU is comprised of the fixed units attached to the residential or commercial buildings. Also included are the radio port operation and maintenance (RPOM) unit, which is responsible for maintaining and managing the radio network elements, and the interworking function unit, which is used as a gateway to data services such as the Internet and PSPDN

Keywords

B-ISDN; access protocols; code division multiple access; data communication; internetworking; maintenance engineering; network interfaces; radio access networks; telecommunication control; telecommunication network management; telecommunication standards; 10 MHz; 2.3 to 2.4 GHz; 5 MHz; CDMA-based protocol; ISDN-like services; Internet; PSPDN; PSTN; RPC; W-CDMA; WLL gateway switch; WLL system; air interface; bandwidth; base stations; commercial buildings; concentration functions; control functions; data rates; data services; fixed units; interim TTA standard; interworking function unit; radio interface unit; radio network elements management; radio port controller; radio port operation and maintenance unit; residential buildings; third generation wireless technology; wideband CDMA technology; wireless local loop system; Bandwidth; Base stations; Control systems; ISDN; Multiaccess communication; Protocols; Radio control; Switches; Telephony; Wideband;

fLanguage

English

Journal_Title

Communications Magazine, IEEE

Publisher

ieee

ISSN

0163-6804

Type

jour

DOI

10.1109/35.795603

Filename

795603