Research

• Senior Research Fellow, Indian Institute of Information Technology Guwahati (IIITG), India. (April'19 to March'20)

• Junior Research Fellow, Indian Institute of Information Technology Guwahati (IIITG), India. (Mar'17 to March'19)

Development of MAC associated schemes for large IEEE 802.15.4 based networks. (sponsored by SERB)

• Project Fellow, Indian Institute of Technology, Guwahati (IITG) , India

Design, develop and test a framework and application to enable effective teaching, learning and increase interaction in large classrooms using ICT solutions. (sponsored by DeitY)

Duration : Nov’14 to Jan’16. 

 PROJECTS

• Beacon scheduling, duty cycle management in cluster tree network topology for Low-Rate Wireless 

Personal Area Networks (LR-WPAN) (since Jan’ 2016)

This is my on-going Ph.D. research work. LR-WPAN are used for low-rate, low-power, lossy communication connecting physical things with embedded technology to sense, monitor, measure and communicate data. The IEEE 802.15.4 standard designed for LR-WPAN, suffers from several limitations for large-scale implementation. The efficiency of these networks depends up on the effective implementation of MAC layer tasks. In pursuit of improving their network performance when deployed over larger areas, following issues pertaining to energy consumption are to be carefully investigated that are not specified in the standard. a) Develop a distributed beacon synchronization mechanism, b) develop an adaptive duty cycling approach considering the dependencies with synchronization, c) develop an adaptive cluster-head selection process to increase the network lifetime, d) study the impact of the selection of MAC layer parameters on duty-cycle and network performance and e) implementation of the complete framework on a real test-bed set up. 

The developed mechanisms can be integrated into the MAC layer of IEEE 802.15.4 standard. This would enable all Low-Rate Personal Area Networks (LR-PAN) including LR-WPAN, to communicate more effectively consuming lower energy and can significantly improve network performance and increase network lifetime.

• Smart Transportation (19-25 Jun’ 2016)

The project was undertaken at IoT summer school, organized by Microsoft Research India. The objective was to address the road safety using IoT as a technology, measure different observations of road condition, driving and behavior of the driver. Also, we measured sharp brakes, improper turns, trip time, waiting time, speed profile

• ICT-based framework to enhance the teaching and learning experience in a large classroom (Nov’14-Dec15)

The project work dealt with enhancing teaching and learning in a large classroom using ICT tools. A system was developed for students to use their smartphones (BYOD) in the classroom to view slides, audio, take notes and interact with the teacher with anonymity. Moreover, the system is able to keep a record of the activity of the student with the system. 

• Enabling Priority Based Scheme For Enhancing ZigBee Tree Based Routing Protocol (May’13-Apr’14) 

ZigBee is a standard based on the IEEE 802.15.4 standard for wireless personal networks. Opnet simulator was used to enhance the ZBR protocol to improve routing, distribute the load in the network and minimize delay in the intermediate nodes. The work proposes an improved ZigBee algorithm by employing neighbor tables and link quality indicator (LQI). Keeping in mind the low complexity of traditional ZigBee protocol, priority based approach has been implemented by using two reserved bits as priority bits in route selection.

• Study of QoS issues for Routing Protocols in IEEE 802.11s (Oct’11-Apr’12) 

Implemented and compared the QoS of the two routing protocols recommended by IEEE 802.11s, i.e., HWMP and RA-OLSR and evaluated their energy usage for different topologies. ns3 was used for the simulation purpose.