4G
is the fourth generation of wireless standards.The system of 4G is expected to provide a comprehensive and secure all - IP based mobile broadband solution to laptop computer wireless modems, smartphones, and other mobile devices.It is characterized by higher speed of data transfer and improved quality of sound. Although not yet defined by the International Telecommunications Union.
The industry identifies the following as 4G technologies:
- Worldwide Interoperability for Microwave Access or WiMAX.
- 3rd Generation Partnership Project Long Term Evolution or 3GPP LTE .
- Ultra Mobile Broadband or UMB.
- Fast Low-latency Access with Seamless Handoff Orthogonal Frequency Division Multiplexing or Flash-OFDM.
These mechanisms are essential to accommodate applications that utilize large bandwidth such as the following..............
- Wireless Broadband Internet Access.
- MMS/Multimedia Messaging Service.
- Video Chat.
- Mobile Television.
- HDTV/High Definition TV.
- DVB/Digital Video Broadcasting.
- Real Time Audio.
- High Speed Data Transfer.
There are published specifications for the development of following gadgets aimed to add 4G connectivity.
- Video Camera.
- Gaming Devices.
- Vending Machines.
- Refrigerators.

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