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, supplying you with in-depth motives of ways key criteria and protocols intersect and interconnect. This consultant digs into the gritty information of daily 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 platforms like WAP and side and eventually to complete throttle 3G networks. It describes key criteria, digs deep into the center of appropriate community protocols, and information the entire variety of compatibility concerns among the USA (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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Real-world guide within the layout and deployment of 3G networks Pin down the technical info 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, supplying you with in-depth reasons of ways key criteria and protocols intersect and interconnect.
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Extra info for 3G Wireless Networks
It is important to note that analog systems utilize digital signaling in many aspects of their network, Chapter 2 28 including the air interface. However, the analog reference applies to the method that the information content is transported over; that is, no CODEC is involved. 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.
The HLR does, however, do more that just hold subscriber data; it also plays a critical role in mobility management—that is, the tracking of a subscriber as he or she moves around the network. In particular, as a subscriber moves from one MSC to another, each MSC in turn notifies the HLR. When a call is received from the PSTN, the MSC that receives the call queries the HLR for the latest information regarding the subscriber’s location so that the call can be correctly routed to the subscriber. Note that, in some implementations, HLR functionality is incorporated within the MSC, which leads to the concept of a “home MSC” for a given subscriber.
5kHz 20kHz (b) 10kHz (m) Number Channels 832 2496 1000 200 1999 222(b) 444(m) CODEC NA NA NA NA NA NA Spectrum Allocation 50MHz 50MHz 50MHz 10MHz 50MHz 10MHz First Generation (1G) 29 NAMPS is an analog radio system that is very similar to AMPS, with the exception that it utilized 10-kHz-wide voice channels instead of the standard 30-kHz channels. The obvious advantage with this technology is the capability to deliver, under ideal conditions, three times more capacity of a system over that of regular AMPS.
3G Wireless Networks by Daniel Collins, Clint Smith