Note for Cellular Mobile Communication - CMC By Praveen Raju Prathikantam

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Cellular Mobile Communications [CMC] [IV th Year, Ist SEM – 2017-18] Prepared by : Mr P.Praveen Raju Associate Professor ECE Department Sreyas Institute of Engineering and Technology [SIET], Nagole, Hyderabad, TS

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IEEE IS – 95 IFS Institute of Electrical And Electronics Engineers A group consisting of professional engineers that has specialized societies whose committers prepare standards in member’s area of specialty. One of the dominant second generation cellular telephone standards in North America. Interim Standard 95 Interface Space In wireless LAN’s a time interval between two frames to control access to the channel ISO International Organization For Standardization A worldwide organization that defines and develops standards on a variety of topics. ITU GPS International Telecommunication Union Global Positioning System. An MEO public satellite system consisting of 24 satellites and used for land and sea navigation GPS is not used for communication. GSM Global System For Mobile Communication A 2nd generation cellular phone system used in Europe GPRS Global Star General Packet Radio Service A LEO satellite system with 48 satellites in 6 polar orbits with each orbit hosting 8 satellites LEO Low Earth Orbit A polar satellite orbit with attitude between 500 to 2000 kM with rotation period of 90 to 120 mn/s MEO Medium Earth Orbit A satellite orbit positioned between the 2 van Allen belts. It takes 6 hours to circulate earth. SIM MAC Subscriber Identity Module Message Authentication Code An MDC that can span a geographical area of the city size MPEG MIME NRZ Motion Picture Experts Group Multipurpose Internet Mail Extensions Non – Return To Zero A digital – to digital polar encoding method in when the signal level is always either at +ve or –ve but never at zero AMPS Advanced Mobile Phone Service

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GLOSSARY AP Access Point – a central base station in a BSS ACK Acknowledgment – a response sent by the receiver to indicate the successful receipt of data. Advanced Encryption Standard. An asynchronous block cipher adapted by NIST to replace DES Advanced Mobile Phone System. A North American analog cellular phone system using FDMA Advanced Network And Services A nonprofit organization created by IBM, merit and MCI to build a high speed back bone The Network Created By ANS AES AMPS ANS ANSNET ARPA ARPANET ALOHA ANSI AM ATM IMEI EIR Advanced Research Project Agency. A government agency that funded ARPANET, which later found global internet Advanced Research Projects Agency Network. The packet switching NW found by ARPA, used for internet working research. The original random multiple access method in which a station can send a frame any time it has one to send [MA] American National Standards Institute A national standards organization that defines standards in USA Amplitude Modulation An analog conversion method in which the carrier signals amplitude varies wrt modulating signal. Asynchronous Transfer Mode A wide area protocol featuring high data rates and equal – sized packets text, audio and video data. International Mobile Equipment Identity A unique number behind every mobile battery Equipment Identity Register TAC Type of approval code Represents Country Code & Other are Assembly Codes Baud Rate Blue Tooth Manufactures Code 01 & 02 – AEG 07 & 40 – Motorola 10 & 20 – Nokia 41 & 44 – Siemens 51 - Sony Eriksson The number of signal elements transmitted per second. A signal element consists of one or more bits. A wireless LAN technology designed to connect devices of different functions such as mobiles, laptops etc.. In a small limited room

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Bridge CGI Cookie DES A network device operating at the first 2 layers of the internet model with filtering and forwarding capabilities Common Gate Way Interface A standard for communication between HTTP servers and executable programs CGI is used in crating dynamic programs A string of characters that holds some information about the client and must be returned to the server untouched. Data Encryption Standard A symmetric key block cipher using rounds of festal ciphers and standardized by NIST Datagram In packet switching an independent data unit Decibel (dB) A measure of the relative strength of two signal points Delta Modulation An analog to digital conversion technique in which the value of the digital DCT DNS Server DNS EIA GEO SONET STS FM signal is based on the difference between the current and previous sample values. Discrete Cosine Transforms A compression technique in which the signal representation of data is changed from a time or space domain to frequency domain. A computer that holds information about the name space A TCP /IP application service that converts user frequently names to IP addresses Electronics Industries Association An organization that promotes Electronics Manufacturing concerns. Geostationary Earth Orbit A Satellite orbit positioned above the upper Van Allen belt, It looks stationary to the people. Synchronous Optical Network A standard developed by ANSI for fiber optic technology that can transit high speed – data, it is used to deliver Text, Audio, Video Synchronous Transport Signal A signal in the SONET hierarchy. Frequency Modulation. An Analog to Digital Modulation method in which the carrier frequency varies with Amplitude of the Modulating signal. FSK Frequency Shift Keying A Digital to Analog encoding method in which the Frequency of the carrier signal is varied to rep 0 or 1 FDMA Frequency Division Multiple Access An Access Method technique in which multiple sources use assigned bandwidth in a Data Communication band. Frequency Division Multiplexing FDM FHSS Frequency Hopping Spread Spectrum A Wireless Transmission method in which sender transmits at one Carrier Frequency for a short period of time then Hops to another Carrier Frequency for same amount of time, again hops for some time ….etc After same Hops .. cycle repeats TDM Time Division Multiplexing