3G is a wireless communication technology, third generation of wireless communication standards, following the earlier 2G technology that operates on various frequency bands, enabling widespread connectivity across different regions.

Specifications: 3G vs 2G

Specification

2G Network

3G Network

What is 3G speed for data transfer

Up to 384 Kbps

200 Kbps (moving devices)

384 Kbps (stationary devices)

What is Network Architecture

GSM (Global System for

Mobile Communications)

UMTS (Universal Mobile

Telecommunications System)

3G Voice Calls

Circuit-switched

Circuit-switched

or Voice over IP (VoIP)

Internet Access within 3G

Basic web browsing

and limited data services

Faster web browsing,

email, multimedia streaming

Advanced Features in 3G

N/A

Video calling, mobile internet

access, multimedia streaming,

enhanced security

Application in IoT

  • Smart Metering: accurate billing, remote monitoring, and efficient energy management.

  • Asset Tracking: logistics operations, supply chains.

  • Environmental Monitoring: monitoring pollution levels, optimizing resource usage, and ensuring a sustainable environment.

  • Healthcare: wearable devices, virtual consultations, and timely medical assistance.

Structure and Functionality of 3G

The structure of 3G networks involves base stations, mobile devices, and core network components. Here's how it works:

  • Base stations or Node B are access points for mobile devices to connect to the 3G network. They get and transfer data signals, providing seamless communication between devices and the network.

  • 3G-enabled devices, such as smartphones, tablets, and IoT sensors, utilize the 3G network to access the internet, make calls, and transmit data. These devices are equipped with SIM cards that authenticate and authorize network access.

  • Core Network implies various elements, including the mobile switching center (MSC), serving GPRS support node (SGSN), and gateway GPRS support node (GGSN) enable call routing, data transfer, and network management.

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