Gsm communication system
They also noted that some carriers do not encrypt the data i. This book starts with the system components and basic services that the GSM system can provide.
Listed below are the features of GSM that account for its popularity and wide acceptance.
Gsm communication system
It will likely take some time; however, as Macau is the first region planning to decommission an existing GSM network in the early June of This percentage includes more than five billion consumers in more than territories and countries making GSM the most used standard for all cellular technologies. Within a GSM network, there are five cell sizes that have varying coverage areas based on the implementation environment: micro, macro, pico, umbrella, and femto. The channel data rate for all 8 channels is EFR brought a If you are in Europe or Asia and using a mobile phone, then most probably you are using GSM technology in your mobile phone. Base station subsystem — the base stations and their controllers Network and Switching Subsystem — the part of the network most similar to a fixed network, sometimes just called the "core network" GPRS Core Network — the optional part which allows packet-based Internet connections Operations support system OSS — network maintenance Base station subsystem[ edit ] GSM cell site antennas in the Deutsches Museum , Munich , Germany GSM is a cellular network , which means that cell phones connect to it by searching for cells in the immediate vicinity.
Described are key functional sections of a GSM network and how they communicate with each other. Originally, two codecs, named after the types of data channel they were allocated, were used, called Half Rate 6. As a result, the European GSM network was able to see much more rapid deployment than previously thought possible.
In a large urban area, there will potentially be a large number of base transceiver stations deployed, thus the requirements for a base transceiver station are ruggedness, reliability, portability and minimum cost.
Macro cells can be regarded as cells where the base station antenna is installed on a mast or a building above average rooftop level.
Inthe total number of GSM subscribers across the world exceeded one billion users. These eight radio timeslots or burst periods are grouped into a TDMA frame. It has an ability to carry 64 kbps to Mbps of data rates. Half-rate channels use alternate frames in the same timeslot.
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