Educational technology ,careers and future : 4G in India and Latest technologies associated

Wednesday, November 28, 2018

4G in India and Latest technologies associated

What is 4G and How it provide High speed of Data

The first 4G cellular standard was proposed by NTT Docomo in 2004 .Long term evolution (LTE) which is also called as 4G is based on MIMO-OFDM and continues to be developed by the 3rd Generation partnership project(3GPP) , which developed 3G earlier. LTE specifies downlink rates up to 300 Mbit/s, uplink rates up to 75 Mbit/s, and quality of service parameters such as low latency. LTE advanced adds support for picocells, femtocells, and multi-carrier channels up to 100 MHz wide. LTE has been embraced by both GSM/UMTS and CDMA operators.

The first LTE services were launched in Oslo and Stockholm by Telia Sonerain 2009.International Telecommunications Union-Radio communication sector(ITU-R) created a set of standards that networks must meet in orders to meet  the requirement of  true 4G called as International Mobile Telecommunications Advanced (IMT-Advanced) Communication.

4G Standards

4G uses IP packet switching and use OFMDA(Orthogonal frequency-division multiple access) multi carrier transmission methods or other frequency Domain Equalization(FDE).Th peak data rates must be 100Mbps on a mobile network and upto 1Gbps on local wireless network. 4G uses IPV6, thus providing large number of available IP addresses thus streamlining user experience.4 G technologies offers better handovers between different networks and better quality of services.

What is MIMO?

MIMO is multiple input multiple output. When signal are transmitted with single Antenna , considerable amount signal loss occurs due to interferences causing low speed and poor signal quality at the receiver end. MIMO refers to practical technique for sending and receiving more than one data signal simultaneously over the same radio channel by exploiting multipath propagation using Multiple antennas used at both the transmitting and receiving stations – which is at the heart of the current high speed 4G mobile systems .

LTE (4G) in India

Although 4G was launched by AIRTEL at Kolkata ,in India in 2012 the speed was not as much it was expected. With the launch of 4G by Reliance Jio in 2016 Indian mobile users experienced high speed data services. Since then all the major private operators 4G in India but Indian users couldn’t get the real 4G speed .Initially JIO has shown download speed upto 70 Mbps but slowly average speed has dropped upto 16 Mbps. With the rising customers speed has reduced to 2 Mbps in few areas.While IARTEL has considerably improved its data speeds and having more speed compared to RJIO.

 Recently AIRTEL started first round of deployment of state of the art MIMO technology in AIRTEL’s network in Bangalore and Kolkata and will expand to other parts of country.

Abhay Savargaonkar, Director – Networks, Bharti Airtel said, on September 26, 2017 “India is fast striding towards exponential and unprecedented data growth. Our latest deployment of Massive MIMO, will help us serve this demand and would also give an impetus to build a future ready network. The deployment gives us a strategic advantage to provide faster speeds and enhanced user experience for our customers, thereby translating into improved spectrum efficiency.”
Massive MIMO creates 3D beams both on horizontal and vertical planes towards users located within its coverage footprint. This helps in improving coverage and reducing interference across users in different beams, thereby improving signal quality (SNR) by 2-3dB. Serving multiple users by re-using same set of resource blocks (MU-MIMO) with improved signal quality helps in improving user experience, cell capacity and spectrum efficiency.

Source: Wikipedia, &

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