October 30, 2020

IT Voice September 2016 Edition

New network 4G in India
Recent developments by India’s telcos suggest they are beginning to focus more on bringing 4G wireless technology to the country, possibly by next year. However, the high upfront cost of deploying the next-generation wireless broadband tech and lack of cheap LTE-enabled mobile devices remain stumbling blocks.
Interest in 4G LTE (long-term evolution) technology and in faster mobile Internet connections in general is growing, as more Indians expect to do more on their smartphones . The means of communication not until recently has been only voice and text. Voice and SMS services were given top priority by telecom networks. But, the Internet has provided many other services like electronic file sharing, online gaming, e-commerce and getting access to any information by just goggling which appeal to people as these services are cost effective and also reduces burden on the human part.
Making these services available on mobile devices has far more benefits and interesting situations. However, today’s internet through cables and wireless limits connectivity only to a small region called Local Area Network (LAN) and Wireless Local Area Network (WLAN) hot spot respectively.
Also getting an advanced service support to today’s voice dominated telecom mobile networks is not an easy task either. Globally there is a perception that IP is the protocol that will enable new possibilities for telecom sector in future.
4G fourth-generation wireless defines the stage of broadband mobile communications that supersede the third generation 3G, 4G used orthogonal frequency-division multiplexing – OFDM instead of time division multiple access – TDMA or code division multiple access – CDMA are increasingly marketing their services as being 4G, even when their data speeds are not as fast as the International Telecommunication Union (ITU) specifies. According to the ITU, a 4G network requires a mobile device to be able to exchange data at 100 Mbit/sec. A 3G network, on the other hand, can offer data speeds as slow as 3.84 Mbit/sec.
The factors that drive from 3G to 4G will be services that offer better quality (e.g. video and sound), more sophistication in association of a large quantity of information, and improved personalization.
A number of technologies currently exist to provide users with high-speed digital wireless connectivity; examples are Bluetooth and 802-11. Standards provided by 802.11 are very high speed toward network connections over short distances, typically in the tens of meters. Wireless networks facilitators & Cellular providers look to increase speed on their long range networks. The goal of 4G (fourth-generation) wireless system is the same for long-range, high-speed wireless.
4G uses advances protocol spectrum up to 4 times as effective & efficiently as 3G systems, have better ways of handling dynamic load changes, creating more bandwidth than 3G systems.
India was late to enter 3G era, 3G is still not a good business case for operators as well as for consumers mostly due to high tariff and moderate coverage. Also operators are not pushing 3G, as they do have only 5 MHz spectrum more 3G users may lead to network choked. Handset pricing is another issue for 3G adoption. India operators chose LTE over WiMAX. Currently most operators worldwide are commited to LTE deployment as the natural upgrade path from GSM/UMTS and CDMA.
As coverage of LTE in India is expected to be poor at this stage, smartphones will not do good. Even if only 3G & 4G compatiable phones are offered it will not do good as no operators has pan India 3G spectrum and 3G coverage is still poor. Also TD-LTE requires more power than FDD-LTE. So tablets and dongles are the safe bet right now. Dongles must be multimode (2G/CDMA/3G/LTE) supported.