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 truly 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 causes 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 companies will adventure in making the changeover from 2d new release structures (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 center of appropriate community protocols, and information the total variety of compatibility concerns among the united states (CDMA 2000) and eu (WCDMA) models of the normal. lots of name stream diagrams convey you precisely how the applied sciences paintings.
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Note that in certain implementations, the BSC may be physically and logically combined with the MSC. Connected to the BSC is the Mobile Switching Center (MSC). The MSC, also known in some circles as the Mobile Telephone Switching Office (MTSO), is the switch that manages the setup and teardown of calls to and Figure 1-6 Basic Network Architecture. Home Location Register (HLR) Base Station Controller (BSC) Base Station Controller (BSC) other networks Mobile Switching Center (MSC) Wireless Communications 15 from mobile subscribers.
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.
The cell site acts as a conduit for the information transfer converting the radio energy into another medium. The cell site sends and receives information from the mobile and the mobile telephone system office (MTSO). The MTSO is connected to the cell site either by leased T1/E1 lines or through a microwave system. The cellular system is made up of many cell sites that all interconnect back to the MTSO. First Generation (1G) 31 Figure 2-1 General 1G system. Cell Site A Cell Site B MTSO/MSC Public switch Cell Site C The MTSO processes the call and connects the cell site radio link to the Public Service Telephone Network (PSTN).