Characteristics of Wireless Network

Characteristics of Wireless Network

1. 1G

   • Used analog transmission(1981)

2. 2G

   • Used digital exchange(1992)

3. 3G

   • Mobile N/W & telecommu techno.Used in GPS & location based services,mobile services.Speed 200 kbit/s

4. 4G

   • Relesed after 3G.Same as 3G but speed requirement rate is 100 Mbit/s for high mobility like trains,buses & cars.1 Gbit for low mobility like walking & static persons

5. LTE(Long Term Evolution)

   • Is a 4G N/W and standard for wireless communication of high speed smartphones and mobile data terminals.Download rates as high as 300 Mbit/s and upload rates 75 bit/s

6. WIMAX

   • 4G N/w designed as alternative to DSL Cable and T1 Lines.It is a wireless commun.standard to provide 30 to 40 mbps data rate.New version:1 Gbit/s for fixed devices & 100 bit/s for various mobile devices. Setup lower than 3G since cables are not used.
   • Types
     • Line of Sight
     • Non Line of sight.
   • Advantage
     • Allows connectivity even in remote & isolated areas.

7. 5G

   • Tactile Internet.Not publically available.

8. Sensor N/Ws

   • Used to measure data and parameters like temp.sound.pressure .Sensors are placed in fixed locations & they are linked by wireless N/w to perform distributed sensing task