By Jonathan P. Castro
All IP in 3G CDMA Networks covers all of the key facets of UMTS and its implementation from either the engineering dressmaker and the operator and repair companies' standpoint. It addresses the fundamental projects occupied with the UMTS community deployment in new areas and inside of current 2G/2.5G networks.Key features:Presents options for the combination and coexistence of 2G and 3G platforms and highlights the seamless interoperability capabilities among GSM and UMTS.As a part of the evolution in the direction of All IP mobile networks, it outlines the IP Multimedia Subsystem - IMS and the packet optimized Radio entry community, together with excessive velocity obtain Packet Access.Provides a whole photo of broadband instant via UMTS, while describing purposes enabler systems and the standards for 3G prone that increase the consumer experience.By delivering one built-in resource in UMTS and its evolution, All IP in 3G CDMA Networks represents a useful source for layout engineers, operators and providers services. Likewise, Technical and advertising Executives and bosses in instant communications or comparable components, and enterprise or revenues channels representatives, will make the most of this concise quantity in 3G networks and companies enablers. educational programmes in Telecommunications and data know-how segments at senior or postgraduate point, also will locate worthwhile contributions during this booklet.
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Extra info for All IP in 3G CDMA Networks: The UMTS Infrastructure and Service Platforms for Future Mobile Systems
ROADMAP TO BROADBAND WIRELESS MULTIMEDIA 5 infrastructure. This is the convergence of single networks into a multi-purpose backbone network. The next section covers this step, which will also have an impact on the implementation of UMTS radio-access technology. e. the closer inter-working between ﬁxed and mobile telecommunications, although has long been a buzzword in the telecom market, is now coming into reality. As Ericsson puts it , ﬁxed and mobile convergence includes everything from new services to the integration of nodes, networks and operating systems.
Adjacent micro-cells share the same frequencies, whereas interference in FDMA and TDMA does not allow this. Other beneﬁts and features can be found in [6–8]. Here we focus on the WCDMA or FDD mode and TDMA/CDMA or TDD mode of the UTRA solution. 1 illustrates some of the UTRA Frequency Division Duplex (FDD) characteristics. This mode uses wide-band Direct-Sequence Code Division Multiple Access (DS-CDMA), denoted as WCDMA. To support bit rates up to 2 Mbps, it utilises a variable spreading factor and multi-code links.
1 10 ms Time The UTRA WCDMA or FDD mode characteristics. antennas. In addition, it will seamlessly co-exist with GSM networks through its intersystem handover functions of WCDMA. 4 The UTRA TDD Mode: TD/CDMA The second UTRA mode results from the combination of TDMA and FDMA and exploits spreading as part of its CDMA component. It operates in time division duplexing using the same frequency channel. In this mode, the MSs can only access a Frequency Division Multiplexing (FDM) channel at speciﬁc times and only for a speciﬁc period of time.