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EricssonREVIEWTHE TELECOMMUNICATIONSTECHNOLOGY JOURNALThe purpose of Ericsson Review is toreport on the research, development andproduction achievements made in telecommunicationstechnology at Ericsson.The journal is distributed to readers inmore than 130 countries.Address:Telefonaktiebolaget LM EricssonSE-126 25 Stockholm, SwedenPhone: +46 8 719 00 00Fax: +46 8 681 27 10Internet:http://www.ericsson.com/reviewContentsNew subscriptions:http://www.ericsson.com/reviewAddress changes and distribution:Phone: +46 8 799 63 28Fax: +46 8 28 59 74ER @pressdata.seAddress: PressDataBox 3263SE-103 65 Stockholm, SwedenPublisher: Jan UddenfeldtEditorial board: Per O. Andersson, FredrikDahlgren, Thomas C. Eriksson, UrbanFjellstad, Magnus Frodigh, Jan Gabrielsson,Lars-Goran Hansson, Peter Lancia,Magnus Madfors, Eric Peterson, HelenaSchytt, Ulf Westin, Johan AkessonEditor: Eric PetersonProduction manager: Eva Karlsteineva.karlstein@lme.ericsson.seLayout: Paues Media, StockholmIllustrations: Claes-Goran Andersson, HaraPrinter: JMS Rulloffset i Koping ABISSN: 0014-0171Volume: 80, 2003© Telefonaktiebolaget LM EricssonHandover between WCDMA and GSMHandover between WCDMA and GSM allows the GSM network to be used to givefallback coverage for WCDMA technology. This means that subscribers can experienceseamless service, which is of importance to the commercial launches in 2003.6OMA—Changing the mobile standards gameThe role of the OMA in the value chain is meant to differ from that of previousstandards organizations. Its approach focuses mainly on interoperating services insteadof protocol stacks. The idea is to offer enabling technologies for deliveringrelevant, end-to-end, high-performance services. 12The service network framework—An architecturalblueprint for the service networkThe emergence of the Mobile Internet has focused special attention on the servicenetwork, which is where network operators can expect to develop, launch and billfor new services in a streamlined way. 18Realizing the operator's service network: Ericsson'ssystems integrationEricsson's systems integration gives operators the means of evolving their servicenetworks, enabling them to realize the true potential of the service network andmove toward fully third-generation-ready networks. 26Advanced baseband technology in third-generationradio base stationsBeing the kernel in WCDMA, the baseband platform must be able to efficientlyhandle the entire life cycle of an RBS. Moreover, it must do so while networks areevolving and expanding. New radio network functions and features will also beadded through base station hardware and software to perfect the WCDMA system.32Ericsson Review No. 1, 2003 1