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 truly paintings. In 3G instant Networks, specialists Clint Smith and Daniel Collins dissect serious problems with compatibility, internetworking, and voice/data convergence, giving you in-depth factors of ways key criteria and protocols intersect and interconnect. This advisor digs into the gritty information of day by day community operations, supplying you with an opportunity to appreciate the problems provider companies will event in making the changeover from 2d new release platforms (CDMS etc.) to 2.5 new release platforms 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 info the total diversity of compatibility concerns among the united states (CDMA 2000) and eu (WCDMA) models of the traditional. lots of name circulate diagrams exhibit you precisely how the applied sciences work.
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Additional info for 3G Wireless Networks
In general, however, the ITU recommendations are mainly a set of requirements and do not specify the detailed technical solutions to meet the requirements. To address the technical solutions, the ITU has solicited technical proposals from interested organizations, and then selected/approved some of those proposals. In 1998, numerous air interface technical proposals were submitted. These were reviewed by the ITU, which in 1999 selected five technologies for terrestrial service (non-satellite based).
Cellular communication, referred to as 1G, is one of the most prolific voice communication platforms that has been deployed within the last two decades. Overall, cellular communication is the form of wireless communication that enables several key concepts to be employed, such as the following: ■ Frequency reuse ■ Mobility of the subscriber ■ Handoffs The cellular concept is employed in many different forms. Typically, when referencing cellular communication, it is usually associated with either the Advanced Mobile Phone System (AMPS) or Total Access Communication Services (TACS) technology.
Table 2-1 represents the popular 1G wireless mobility service offerings that have been deployed. As mentioned previously, the two most prolific 1G systems deployed in the world are AMPS and TACS. All of the 1G systems shown in the table utilize a Frequency Division Multiple Access (FDMA) scheme for radio system access. However, the specific channel bandwidth that each use is slightly different, as is the typical spectrum allocations for each of the services. The channel bandwidths are as follows: ■ AMPS is the cellular standard that was developed for use in North America.