GSM Interview Questions and Answers - GSM FAQs

Short form of Global System for Mobile Communications, is a wireless network system.......
The maximum data rate supported by a GSM system is 9.6 kbps. However there are extensions to GSM standard to improve throughput.......
a.) Sectorization of a cell - Sectorization is a process to cut down equipment costs in a cellular network. It influences in traffic load and cell size........
a.) GSM – 900: Uplink spectrum is 890.2–914.8 and downlink spectrum is 935.2–959.8.........
a.) Equalisation: - An adaptive equalizer is employed by a GSM receiver for overcoming the impact of non-ideal channel characteristics which are caused by multipath propagation....
Frequency Reuse: Frequency Reuse is one of the techniques for improving capacity and spectral efficiency.......
a.) BTS and MS - Base station subsystem is a segment of cellular telephone network that is responsible for setting signals and traffic between mobile phone sets and network switching subsystems.............
a.) Cell Splitting - The process of dividing the radio coverage of a cell site within a wireless telephone system into new cell sites is known as Cell Splitting.......
a.) Synthesised Frequency Hopping - The GSM’s number of frequencies is 124. When the operators do not have enough frequencies, the range to be used is CDS 1800.......
a.) HSN - Hopping sequence number is utilized, to spread the interference between all cells that uses the same hopping TCHs.......
a.) Erlangs - Total traffic volume per hour / 3600 seconds is described by erlang.........
a.) Location Area - Location Area is a group of cells, The subscriber is paged in this area, One or more base station controllers are used to serve each Location Area but by a single MSC....
a.) IMSI - International Mobile Subscriber Identity – a unique identification that is associated with all GSM and UMTS network mobile phones.......
Absolute Radio Frequency Channel Number, a code to specify a pair of physical radio carriers and channels within the spectrum that is allocated for cellular mobile communications.......
Power control is the intelligent selection of transmit power in a communication system for achieving best performance within the system.......
a)FDD - Frequency Division Duplex is one of the techniques, in which one frequency band is utilized for transmitting and another used for receiving......
Extended cell feature enables the operators for extending the coverage without installing new cell cites. Extended cell feature is designed specifically for providing covering in rural areas, where density of population is low and installation of additional cell sites.......