All IP in 3G CDMA Networks: The UMTS Infrastructure and by Jonathan P. Castro

By Jonathan P. Castro

All IP in 3G CDMA Networks covers the entire key features of UMTS and its implementation from either the engineering fashion designer and the operator and repair services' standpoint. It addresses the basic initiatives desirous about the UMTS community deployment in new areas and inside of latest 2G/2.5G networks.Key features:Presents options for the combination and coexistence of 2G and 3G structures and highlights the seamless interoperability features 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 pace obtain Packet Access.Provides an entire photograph of broadband instant via UMTS, while describing functions enabler systems and the factors for 3G companies that improve the person 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 companies companies. Likewise, Technical and advertising Executives and bosses in instant communications or similar parts, and enterprise or revenues channels representatives, will reap the benefits of this concise quantity in 3G networks and prone enablers. educational programmes in Telecommunications and data know-how segments at senior or postgraduate point, also will locate priceless contributions during this booklet.

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The latter greatly simplifies frequency band assignment and adjacent cell interference. In addition, capacity improvements with DSSS (or more commonly referred to as DS-CDMA,2 resulting from the voice activity factor) cannot apply effectively to FDMA or TDMA. g. 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.

4 and 5 MHz, depending on the interference situation between the carriers. The FDD has a self-timing point of reference through the operation of asynchronous BSs, and it uses coherent detection in the uplink and downlink based on the use of pilot reference symbols. g. multi-user detection and smart adaptive 1 The maximum bit per channel remains fixed and low. Direct-sequence code division multiple access. g. 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.

G. R4 and R5, brought newer functions and new building blocks to the core side. In addition, it also has an impact on the service configuration options. e. services, air interface, core-network access and the enhancements for long-term evolution. 1 UMTS Services Aspects The scope of services can be largely focused on different issues like service management, charging and billing, terminals, network management, quality of service and security. Here, however, we will be looking at services from the principle side in order to establish a framework to present the UMTS air interface.

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