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IoT Communications

IoT Communications

  1. Professional Mobile Radio (PMR): 
    • PMR network is a wireless network.
    • PMR network is not accessible to the general public.
    • PMR network frequency and the associated bandwidth is allocated for a user in the given period.
    • Frequency bands in PMR are 40MZ, 80MZ, 150MZ, 400MZ.
    • In the PMR network, both analog and digital technologies are used and cover area form 30km up to wide-area coverage. 
  2. 2.5G / 3G / 4G: 
    • These are the public networks.
    • The coverage area is broad.
    • 2.5G throughput is 8 to 40kbps (GPRS or EDGE)
    • 3G throughput is 2Mbps (Moving) or 383kbps (Not Moving)
    • 4G throughput is 100Mbps or more (LTE)
  3. Satellite Communication:
    • In satellite communication, network communication can be done through Geostationary Orbits (36,000 km above the earth) and Low Earth Orbit.
  4. Zig Bee:
    • This network is managed by the Zigbee Alliance.
    • It is a low power network.
    • The coverage area range is up to 10 meters.
    • Mesh network topology is used.
  5. Z Wave:
    • This network is managed by the Z wave Alliance for home automation.
    • It is also a low power network.
    • It can cover up to 30 meters range area.
    • Mesh network topology is used.
  6. Leased Lines:
    • In this network, there is a permanent connection established between two locations.
    • Analog or digital data can be sent.
  7. PSTN:
    • The full form of PSTN is the Public Switching Telephone Network.
    • PSTN requires Modem i.e. Modulator and Demodulator.
    • The data rating is up to 56kbps.
    • The cost is proportional to duration.
    • Setup time is long.
  8. WI-FI:
    • Wi-Fi is the name of a wireless networking technology that uses radio waves to provide wireless high-speed Internet and network connections.
    • A common misconception is that the term Wi-Fi is short for "wireless fidelity," however this is not the case.
    • Wi-Fi is simply a trademarked phrase that means IEEE 802.11x.
    • Wi-Fi alliance owns the brand range usually up to 100 meters outdoors.
  9. Bluetooth:
    • Originally designed to replace serial cables.
    • Bluetooth is a wireless technology standard used for exchanging data between fixed and mobile devices over short distances.
    • The range is less than 100 meters.
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