3G Wireless Networks by Daniel Collins, Clint Smith

By Daniel Collins, Clint Smith

Real-world guideline within the layout and deployment of 3G networks Pin down the technical information that make 3G instant networking really paintings. In 3G instant Networks, specialists Clint Smith and Daniel Collins dissect serious problems with compatibility, internetworking, and voice/data convergence, supplying you with in-depth reasons of the way key criteria and protocols intersect and interconnect. This advisor digs into the gritty information of day by day community operations, providing you with an opportunity to appreciate the problems carrier services will adventure in making the changeover from 2d new release structures (CDMS etc.) to 2.5 new release structures like WAP and part and eventually to complete throttle 3G networks. It describes key criteria, digs deep into the center of appropriate community protocols, and information the total variety of compatibility concerns among the USA (CDMA 2000) and eu (WCDMA) types of the normal. lots of name movement diagrams express you precisely how the applied sciences paintings.

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Unlike other transmission media such as copper or fiber facilities, it is not possible to simply add radio spectrum when needed. Only a certain amount of spectrum is available and it is critical that it be used efficiently, and be reused as much as possible. Such requirements are at the heart of the radio access techniques used in mobile communications. 1 Frequency Division Multiple Access (FDMA) Of the common multiple access techniques used in mobile communications systems, FDMA is the simplest.

The cell site radio equipment is connected to the Antenna Interface Frame (AIF), which provides the receiver and transmit filtering. The AIF is then con- First Generation (1G) 33 Figure 2-3 General cell site configuration. Figure 2-4 Radio transmission equipment for a cellular base station. nected to the antennas on the monopole through use of the coaxial cables, which are located next to the AIF bay. The cell site is also connected to the MTSO through the Telco bay. The Telco bay either provides the T1/E1 leased line or the microwave radio link connection.

The biggest problem that led to the introduction of 2G technology was the fact that the 1G systems had limited system capacity. This became a serious issue as the popularity of mobile communications grew to a level that far exceeded anyone’s expectations. Other problems included the fact that the technologies in question addressed only the air interface, and other interfaces in the network were not specified (at least not initially), which meant limited roaming, particularly between networks that were supplied by different vendors.

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