4G basically refers to the fourth generation of the mobile telecommunication technology. The capabilities of 4G have been defined by ITU in IMT Advanced. All the potential and current applications include access to mobile web, gaming, mobile HD TV, video conferencing, etc. 4G service was set at 100 megabits per second for higher mobility in communication and 1 gigabit per second for lower communication. 4G is very different from other generations, since it does not support traditional circuit switched telephony service and all internet protocol is based on communication like IP telephony.
The nomenclature of generations refers to the change in fundamental nature of service, compatible transmission technology, higher bit rates, frequency band and wide frequency bandwidth as well as higher capacity for simultaneous data transfers.
4G in India
In India, Bharti Airtel had launched its first 4G service by using LTE technology in Kolkata. Prior to their launch, a group that consisted of China Mobile, SoftBank Mobile and Bharti Airtel came together to form Global TD LTE initiative in Spain. The 4G network of Bharti Airtel does not support mainstream 4G phones like Samsung Galaxy Note 3 and many others. Their service is available in places like Kolkata, Pune, Hyderabad, and Chandigarh, to name a few. It has now expanded to cities like Amritsar, Patiala, Jalandhar and other such cities.
RIL launched 4G services through its subsidiary in Jamnagar. At the moment, Reliance is also planning to rollout in Delhi, Mumbai and Kolkata. Aircel has also launched its 4G service in four places – Andhra Pradesh, Odisha, Assam and Bihar. Tikona Digital Network has broadband wireless access spectrum and it has 2300 MHz band and it is appropriate time and maturity before making place in the space. Tikona has been licensed in northwest India region. It covers five main circles – Gujarat, U.P., Himachal Pradesh and Rajasthan.
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