Section 1 Introduction; Introduction - Pantech G800 Service Manual

G800 Service Manual
SECTION 1. Introduction
1.1. An Introduction of GSM Digital Cellular Mobile Communication System
GSM (Global System for Mobile communication) concluded that digital technology working in
the Time Division Multiple Access (TDMA) mode would provide the optimum solution for the
future system. Specifically , a TDMA system has the following advantage
► Offers a possibility of channel splitting and advanced speech coding ,resulting in improved
spectrum efficiency.
► Offers much greater variety of service than the analog
► Allows considerable improvements to be made with regards to the protection of information.
The GSM system is basically designed as a combination of three major subsystem;
The network subsystem, the radio subsystem, and the operation support system.
The functional architecture of a GSM system can be divided into the Mobile Station (MS), the Base Station
(BS), and the Network Subsystem (NS). The MS is carried by the subscriber, the BS subsystem controls the
radio link with the MS and the NS performs the switching of calls between the mobile and other fixed or mobile
network users as well as mobility management. The MS and the BS subsystem communicate across the Um
interface also known as radio link
The specifications relating to MS are as follows:
TS 100 607-1 : Digital cellular telecommunication system(Phase2+)Mobile Station (MS) con
Formance specification Part1:Conformance specification
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