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IT284 Unit 2 Glossary of Terms
Terms for Unit 2- IT284
12
Computer Science
Undergraduate 2
08/22/2010

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Term
AMPS (Advanced Mobile Phone Service)
Definition
An analog cellular radio standard that serves as the foundation for the U.S. cellular industry. AMPS represents the first generation of wireless networks.
Term
BSC (Base Station Controller)
Definition
The part of the wireless system's infrastructure that controls one or multiple cell sites' radio signals, thus reducing the load on the switch. Performs radio signal management functions for base transceiver stations, managing functions such as frequency assignment and handoff.
Term
BSS (Base Station)
Definition
The central radio transmitter/receiver that maintains communications with mobile radiotelephone sets within a given range (typically a cell site).
Term
BTS (Base Transceiver Station)
Definition
The name for the antenna and radio equipment necessary to provide wireless service in an area. Also called a base station or cell site.
Term
DCS (Digital Cellular System)
Definition
A global system for mobile communications-based PCS network used outside of the U.S.
Term
DTMF (Dual Tone Multi Frequency)
Definition
Signal to the phone company that you generate when you press an ordinary telephone's touch keys. In the United States and perhaps elsewhere, it's known as "Touchtone" phone (formerly a registered trademark of AT&T).
Term
GSM (Global System for Mobile communication)
Definition
Also known as PCS 1900, GSM 1900 is a digital network working on a frequency of 1900 MHz. It is used in the US and Canada and is scheduled for parts of Latin America and Africa.
Term
HLR (Home Location Register)
Definition
A database residing in a local wireless network that contains service profiles and checks the identity of a local subscriber.
Term
PCS (Personal Communications Services)
Definition
A second-generation digital voice, messaging and data cell phone system in the 2GHz range. PCS is supported mostly by GSM. PCS systems use a different radio frequency (1.9 GHz band) than cellular phones and generally use all digital technology for transmission and reception.
Term
PDC (Personal Digital Cellular)
Definition
The Japanese cellular standard.
Term
TACS (Total Access Communication System)
Definition
European analog cellular.
Term
TDMA (Time Division Multiple Access)
Definition
A method of digital wireless communications transmission allowing a large number of users to access a single radio-frequency channel without interference. Each user is given a unique time slot within each channel. SMS Mobile Originate has now gone live on several TDMA networks around the world including Telecom New Zealand, Midwest Wireless USA, Algar Telecom Brazil and Cellcom Israel. Other TDMA network operators such as AT&T Wireless in the U.S. have launched SMS nationally.
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