2G spectrum , GSM, CDMA, Broad Band, 4G, ISP, LAN, WAN, MAN etc meaning for writing essay for school stutents of class 1 to class 10.
Let first we know the abbreviation of these words.
GSM-The Global System for Mobile Communications (GSM)
2G stands for second generation wireless communication technology.
CDMA-Code Division Multiple Access
ISP-Internet Service Provider.
LAN-Local Area Network.
WAN- Wide Area Network.
MAN- Metropolitan Area Network.
Another important terms are given below:
GPRS-General Packet Radio Service.
EDGE: Enhanced Data for GSM Evolution.
UMTS- Universal Mobile Telecommunications System.
HSDPA-High Speed Download/Upload Packet Access .
2G cellular telecom networks were commercially launched on the GSM standard in Finland in 1991.
Advantage of 2G networks over their predecessors are:
1. Phone conversations were digitally encrypted;
2. 2G systems were significantly more efficient on the spectrum allowing for far greater mobile phone penetration levels.
3. It introduced data services for mobile, starting with SMS text messages.
In 3G, fast internet is also the part of mobile communication. 3rd generation mobile telecommunications is a generation of standards for mobile phones and mobile telecommunication services which fulfills the International Mobile Telecommunications-2000 (IMT-2000) specifications. This specification is set by the International Telecommunication Union.
IMT-2000 is a standard in which mininum speed is 2000 MBits/s. Many 3G providers provide more than this speed.
In 3G video confrence is also possible. But 3G didn't become as successful in India as 2G, due its higher cost and weak network signal support.
In India we are currently at 2.5G, which comes along with GPRS service, which is very slow internet compared to 3G.
Now 4G is in news because it is more gaster than 3G. Its speed will be near about 50 mbps. I knew this from news paper. As far as I know Reliance Industry is going to start 4G communication technology.
Rest will be made up to date.
Akbar Ali-Nkia E6