Video Description

Types of Wireless Networks- Frequency Range (Bandwidth)

  • Covered Area (Distance)

    • Radio and television

    • Satelite

    • GMDSS

    • Police and army

    • Aero planes (civil/military)

    • GSM

    • Bluetooth

    • Infrared

    • WiMax (WAN)

    • WiFi (LAN)

Frequency Ranges- Licensed band

  • ISM brand

    • Industrial

    • Scientific

    • Medical

  • Regulatory authority

    • Spectrum management

    • Quality monitoring

    • Rules and regulations

    • R&D

GSM: Global System Mobile GSM Generations- 1G

  • Basic voice service

  • Analog-based protocols

  • 2G

    • Designed for voice

    • Improved coverage and capacity

    • First digital standards (GSM, CDMA)

  • 3G

    • Designed for voice with some data consideration (multimedia, text, internet)

    • First mobile broadband

  • 4G and LTE

    • Designed primarily for data

    • IP-based protocols (LTE)

    • True mobile broadband

  • 5G

Bluetooth- Wireless technology standard for short distances

  • Uses short wavelength UHF in ISM band

  • Personal area network PAN technology

  • Managed by Bluetooth Special Interest Group (SIG)

  • IEEE Standard 802.15

  • Susceptible to barriers and walls

Infrared- Electromagnetic radiation (EMR)

  • Longer wavelength than visible light

  • Short range communication

  • Used by Remote Controls

  • Susceptible to barriers and walls

WiMAX- Worldwide interoperability for microwave access

  • WAN technology

  • IEEE 802.16

  • Last mile wireless broadband

  • Competing with LTE

  • Managed by WIMAX forum

  • Provides triple play communication

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