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 info that make 3G instant networking really paintings. In 3G instant Networks, specialists Clint Smith and Daniel Collins dissect severe problems with compatibility, internetworking, and voice/data convergence, giving you in-depth motives of the way key criteria and protocols intersect and interconnect. This consultant digs into the gritty information of day by day community operations, supplying you with an opportunity to appreciate the problems carrier companies will event in making the changeover from 2d iteration platforms (CDMS etc.) to 2.5 iteration structures like WAP and side and eventually to complete throttle 3G networks. It describes key criteria, digs deep into the heart of proper community protocols, and information the total variety of compatibility matters among the U.S. (CDMA 2000) and ecu (WCDMA) types of the normal. lots of name circulation diagrams express you precisely how the applied sciences paintings.

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Depending on the two cells in question, the handoff can be between two sectors on the same base station, between two BSCs, between two MSCs belonging to the same operator, or even between two networks. ) It is also possible to handoff a call between two channels in the same cell. This could occur when a given channel in a cell is experiencing interference that is affecting the communication quality. In such a case, the subscriber would be moved to another frequency that is subject to less interference.

As we progress through this book, we will introduce many other network elements and interfaces as we build from the fundamentals to the sophisticated technologies of third-generation networks. 2 Air Interface Access Techniques Radio spectrum is a precious and finite resource. 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.

Mobility implies that subscribers be able to move freely around the network and from one network to another. This requires that the network tracks the location of a subscriber to a certain accuracy so that calls destined for the subscriber may be delivered. Furthermore, a subscriber should be able to do so while engaged in a call. The basic approach is as follows. First, when a subscriber initially switches on his or her mobile phone, the device itself sends a registration message to the local MSC.

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