Research

Engineering Sciences

Title :	Energy efficient RF/VLC networks for IoT applications
Area of research :	Engineering Sciences
Focus area :	Wireless Communications and Networking
Principal Investigator :	Dr. Parul Garg, Netaji Subhas Institute Of Technology
Timeline Start Year :	2019
Timeline End Year :	2022
Contact info :	parul saini@yahoo.co.in

Details

Executive Summary :	The explosive growth in mobile data traffic has resulted in unprecedented energy consumption. The development of green technology and reduction in power consumption by the communication devices are the major requirements of 5G systems identified by the industries and academia. The proposal is an attempt made to implement self-sustainable communication systems with energy harvesting (EH) techniques to support novel concepts such as IoT and 5G wireless networks, without sacrificing desirable Quality of Service (QoS). In this project a two-tier heterogeneous network consisting of RF microcell tier and VLC atto-cells incorporating EH is proposed. The main motive of the project is to design a prototype that utilizes the existing infrastructure in an energy and cost efficient method. The user terminal (UT) is served by indoor VLC nodes which are connected to the base station (BS) through RF link. Decode and forward (DF) protocol relay is used to connect the RF and VLC links. The relay is assumed to have no embedded power supply and will harvest energy from the RF electromagnetic waves. The DF relay will consist of information buffer and thus buffer-aided relaying scheme is applied. The UT will harness the light energy emitted by the VLC nodes for uplink transmission. For ubiquitous coverage and uniform lighting multiple VLC access points (APs) are installed which will project multiple circular attocells. Based on the detection of number of active users in a particular cell, a VLC AP may be switched OFF (Sleep Mode) or ON (Active Mode). If the number of UT in a particular cell is less, then the controller will try to associate it to the neighbouring cell. This will minimize the average power consumption. The proposed project poses no health concerns and has no interference with existing RF technologies thus can easily be used in healthcare and aeronautical sectors. The proposed relay system can also solve the problem of weak or no RF signal in the basement parking. An important application of the designed prototype will be enhancing the communication standard in underground mines. The proposed system will not only provide high data rates but can also power the sensors installed for various purpose.
Co-PI:	Dr. Nikhil Sharma The Lnm Institute Of Information Technology,Rupa Ki Nangal, Post-Sumel, Via-Jamdoli,Rajasthan,Jaipur-302031
Total Budget (INR):	35,17,096
Publications :	5