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Figure 11Ericsson's timeline for evolving CDMA tothird-generation capabilities.TRADEMARKScdmaOne is a registered trademark of theCDMA Development Group (CDG).Java is a trademark owned by SunMicrosysttems Inc. in the United States andother countries.JAMBALA is a trademark owned by TelefonaktiebolagetLM Ericsson, Sweden.can be logically separated into an MSC serverand a media gateway that supports ATMand IP transport.Ericsson's media gateway for thirdgenerationCDMA systems is based on thesame third-generation ATM/IP platformthat is being used for the BSC and the radiobase stations. Since the emerging ITU standardsfor the gateway control protocols(GCP) are open, Ericsson's media gatewaywill interface to any MSC. The media gateway,which is controlled remotely by theMSC using GCP, contains a full set of voiceand transport resources for converting protocolsbetween different networks. It alsoprovides signaling functionality for convertinglower layer control protocols. In athird-generation system, the media gatewayserves as the "edge" equipment for voice traffic;similarly, the PDSN becomes the mediagateway for data traffic. This is why edgeequipment in the layered architecture is labeledMGW/PDSN. Media gateways alsoserve as points of entry into the publicswitched telephone network (PSTN)—thecircuit-switched world—while routers withor without home agents serve as edge equipmentto the packet-switched world.In terms of transmission, the layered architectureallows transcoders to be locatedat the edge of the cellular network, whichyields gains in transmission efficiency. Intraditional CDMA networks, the transcodersare located at the BSC and restrictedby the IOS specification. Ericsson is workingwith standards bodies to promote optionaltranscoder locations, in order to exploitthe full potential of the layered architecture.Introduction timelineEricsson's timeline for Steps 1 through 5 isshown in Figure 11, where the X-axis indicatesthe introduction of commercial solutions—customerand field trials will occurprior to these dates. The Y-axis serves to remindoperators of the benefits they stand togain from each step in the evolution.End-to-end solutionsAlthough the focus of this article has beenon network elements that are specific to theevolution of systems based on IS-95 CDMA,it should be noted that Ericsson providesbackbone solutions to complement thisstrategy. Indeed, Ericsson can provide operatorswith end-to-end network solutions—including routers, ATM switches, and edgeand core network equipment—that meetcurrent and future demands. As a leader inIP and ATM solutions, Ericsson can provideturnkey solutions for every possible element66 Ericsson Review No. 2, 2000
cdma2000 3X7DS-41cdma2000 3X/DS-41Figure 12Ericsson's end-to-end solutions. Note:network elements are highlighted in blue.Ericsson can supply every element of athird-generation network.of an operator's telecommunications network(Figure 12).ConclusionThe market dynamics for cellular and PCSoperators is quickly changing. Competitionis increasingly being felt from wireline,ISPs, and VoIP providers. Through the acquisitionand development of industry-leadingCDMA expertise and resources, Ericssonhas demonstrated strong commitmentto the growth and evolution of IS-95-basedCDMA systems. Ericsson has a strong productoffering and a comprehensive five-stepplan for migrating CDMA systems intothird-generation systems.A key consideration for operators is theinstallation of high-capacity access equipmentthat is small, simple to deploy, easilyexpandable, and can be adapted to new technologies.Ericsson's compact RBS platformwas designed to fulfill these requirements.A second consideration is the support ofopen interfaces and standardized systemplatforms. Ericsson has a full portfolio ofIOS- and 3GPP2-compliant products.A third consideration is the establishmentof a packet core and switching platformthat is positioned for future multimediaand data services. Here, too, Ericssonhas the products operators need for earlymarket entry.A fourth consideration is the migration toa layered network architecture that paves theway for an all-IP network. Ericsson's endto-endsolutions enable operators to makethis transition at their own pace.As a strong participant in standardsrelatedactivities regarding the evolution ofthe air interface and wireless networks,Ericsson has a leading position relative tothe introduction of centralized control andto the development of a single-transmissionnetwork for customer services. Operatorswho currently deliver wireless services with,or who are planning to install, cdmaOnetechnology can rest assured that Ericsson hassolutions to all their current and future networkneeds.REFERENCES1 Curtin, P. and Whyte, B.: Tigris—A gatewaybetween circuit-switched and IP networks.Ericsson Review Vol. 76(1999):2, pp. 70-81.2 Jones, F.: Jambala—Intellience beyond digitalwireless. Ericsson Review Vol.75(1998):3, pp. 126-131.Ericsson Review No. 2, 2000 67
Page 1: Ericsson 2/2000REVIEWTHE TELECOMMUN
Page 4 and 5: ContributorsIn this issueLuis Barri
Page 6 and 7: Ericsson Review is also published o
Page 8 and 9: Evolving from cdmaOne to third-gene
Page 10 and 11: Figure 2Operators Harmonization Agr
Page 12 and 13: more features, and greater reliabil
Page 14 and 15: Figure 7Ericsson's third-generation
Page 18 and 19: Third-generation TDMAChristofer Lin
Page 20 and 21: TABLE 1 MODULATION AND CODING SCHEM
Page 22 and 23: Figure 3An example of a cell patter
Page 24 and 25: Figure 5Curves illustrating maximum
Page 26 and 27: TABLE 3. DYNAMIC PACKET DATA SIMULA
Page 28 and 29: erage can be achieved in existing c
Page 30 and 31: Business solutions for mobile e-com
Page 32 and 33: Figure 2Comparison of traditional a
Page 34 and 35: BOX B, THE E-COMMERCE TIMELINE1999E
Page 36 and 37: Figure 6Mobile e-Pay end-user servi
Page 38 and 39: Figure 8Access features with push-a
Page 40 and 41: AuthenticationTo verify that end-us
Page 42 and 43: BOX C, MARKET HARMONIZATIONOn Tuesd
Page 44 and 45: Figure 2The footprint of the RBS 22
Page 46 and 47: Communications security in an all-I
Page 48 and 49: BOX B, SYMMETRIC KEY SYSTEMSGood sy
Page 50 and 51: Figure 4Construction of an ESP-prot
Page 52 and 53: Figure 7An X.500 database structure
Page 54 and 55: Figure 9GPRS VPN scenarios.Figure 1
Page 56 and 57: TRADEMARKSRC4 and RC4 are registere
Page 58 and 59: HIPERLAN type 2 for broadband wirel
Page 60 and 61: Figure 3Typical usage of communicat
Page 62 and 63: Figure 6Mapping of higher layer pac
Page 64 and 65: TABLE 1PHYSICAL LAYER MODES OF HIPE
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Queen City WaterfrontEMERGING PROJE
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TABLE 2. IMPORTANT PARAMETERS FOR N
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Previous issuesNo. 1,2000IPv6—The
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