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Global System for Mobile Communications GSM (Global System for Mobile communications) is an open standard system, since the investment business since 1992, GSM standards are constantly verify and steady development, is now available to the 2 + stage. This phase of the core issue is the data communications, including business and carrying 115 kbit / s packet-switched data services, and, GSM will become the most complex mobile telephone system - covering the entire Earth's satellite systems. GSM is constantly entering new application areas, such as the development of micro-cellular, pico cellular base stations, for the indoor business environment to provide seamless wireless access. GSM system from the beginning of digital design point of view, the system uses modular structure, if the need for new business, as long as a version upgrade, increasing part of the necessary modules, the system without major change, do not have to carry out The scale of the network re-planning, and it is very convenient.
In order to meet the Internet and multimedia communication development, with a wider bandwidth, higher rate of the third generation mobile communications came into being, the ITU will be called IMT2000. Third-generation technology, the use of WCDMA air interface, based on the GSM network, using their existing GSM infrastructure, providing fully compatible with the existing network of high-speed data services, so, GSM standard has a very bright future.
This article discusses the mobile communication network design. First of all, the paper introduced the GSM mobile communication system development of the status quo, and the prospects for the core technology of the system and then to the GSM mobile communication system and structure of the various components were also discussed and finally, the paper also introduced the GSM network coverage and system optimization .