Dr Sayan Kumar Ray

Staff profile

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Dr Sayan Kumar Ray

B.E., M.Tech, Ph.D

Position

Academic leader - curriculum and research

Teaching areas

Cyber Security; Cryptography; Network Infrastructure; Directory Services; Wireless Networks; Computer Networks; Internet of Things; Information Security; Software Engineering; Object-Oriented Programming; Application Programming

Biography

Sayan Ray is currently the Academic Leader (Curriculum and Research) of digital technologies.

He was the acting Associate Dean and acting Head of School of Digital Technologies in his previous roles. He was also the Programme Leader of new programme development and Programme Leader of Networking. He was actively involved in different international collaboration initiatives between the School (and the former Faculty of Business and IT) and other overseas institutes.

Sayan has a Ph.D degree in Computer Science from the University of Canterbury, New Zealand and Master of Technology and Bachelor of Engineering degrees in Computer Science and Engineering from the University of Calcutta and Gulbarga University, respectively, in India. He also completed the Summer Institute for Entrepreneurship (SIE) programme from the Graduate School of Business at Stanford University, USA, fully funded by the New Zealand Foundation for Research, Science and Technology.

As an active and PBRF ranked researcher, Sayan regularly publishes scholarly articles in quality-assured peer-reviewed conferences and journals (IEEE, ACM, Elsevier and Springer), and serves in the technical programme committees of multiple leading conferences worldwide. He frequently gets invited to give keynote and invited talks in conferences and industry gatherings. His papers have won four Best Paper Awards in leading conferences and journals.

Sayan extensively collaborates with researchers from different universities, and is an active member of the Network and Security Research Group in the School of Engineering, Computer and Mathematical Sciences at Auckland University of Technology. He was the associate supervisor for two completed Ph.D work at Auckland University of Technology, New Zealand and is a member of the supervisory committee for another ongoing Ph.D work at the same university.

Sayan’s research publications have received multiple best paper awards in reputed conferences and journals. Sayan is the Review Editor for the Frontiers in Communications and Networks journal and was the invited Guest Editor for a special issue on “Intelligent Green Communication Networks for IoT” in the Annals of Telecommunications journal. As an active network consultant, Sayan has provided consultancy support in projects related to wireless networks (LTE and WiMAX networks; heterogeneous handover and mobility; cloud) and location-based services (WiFi and iBeacon-based indoor location tracking and navigation).

Before joining MIT, Sayan was a design engineer with Tait Communications in New Zealand where his work involved analysing the performance of LTE base stations and 3GPP Evolved Packet Core, and researching on heterogeneous mobility. Before relocating to New Zealand, he worked in the software industry and in academia in India for multiple years.

Research interests

5G/6G Networks; Internet of Things (IoT) and its applications in healthcare and disaster management; Trust and Security of IoT; Dynamic Spectrum Management and Spectrum Sharing of Heterogeneous Technologies in Unlicenced and Licenced Bands (LTE-Unlicenced / LAA / MulteFire / WiFi / 5G NR-Unlicenced); Mobility and Handover Management in Vehicular Networks (LTE / WiMAX / 5G NR); Machine Learning and Artificial Intelligence in Networking.

Publications
Journals
  1. E. Ndashimye, N. I. Sarkar, Sayan K. Ray, “A Multi-criteria Based Handover Algorithm for Vehicle-to-Infrastructure Communications”, accepted for publication in Elsevier Computer Networks, Vol. 186, Feb 2021 [Impact Factor: 3.11] [Q1; Core Rank: A] https://doi.org/10.1016/j.comnet.2020.107652
  2. H. A. Jaber, F. Thabtah, Sayan K. Ray, “Improving Screening Systems of Autism by Machine Learning with Data Sampling”, in Technology and Health Care (IOS), Jan 2021; pp. 1-13 [Impact Factor: 0.806]; https://doi.org/10.3233/thc-202538
  3. A. Ullah, S. M. S. Siddiquee, M. A. Hossain, Sayan K. Ray, “An Ethereum Blockchain-based Technology for Data Security of Regulated Electricity Market”, in Inventions (MDPI), Vol. 5, Issue 4, Nov 2020; [Q2]; https://doi.org/10.3390/inventions5040058
  4. M. A. Hossain, Sayan K. Ray, J. Lota, “SmartDR: A Device-to-Device Communication for Post-Disaster Recovery”, accepted for publication in Elsevier Journal of Network and Computer Applications (JNCA), Vol. 1, Dec 2020 [Impact Factor: 5.57] [Q1; Core Rank: A]; https://doi.org/10.1016/j.jnca.2020.102813
  5. E. Ndashimye, N. I. Sarkar, Sayan K. Ray, “A Network Selection Method for Handover in Vehicle-to-Infrastructure Communications in Multi-Tier Networks”, in Wireless Networks Journal (Springer), Vol. 26, Jan 2020, pp. 387-401; [Impact Factor: 2.65]; [Q2; CORE Rank: B]; https//doi.org/10.1007/s11276-018-1817-x
  6. A. Gramaje, F. Thabtah, N. Abdelhamid and Sayan K. Ray, “Patient Discharge Classification using Machine Learning Techniques”, in Annals of Data Science (Springer), June 2019, https://doi.org/10.1007/s40745-019-00223-6
  7. D. Airehrour, J. Gutierrez, Sayan K. Ray, “SecTrust-RPL: A Secure Trust-Aware RPL Routing Protocol for Internet of Things”, in Elsevier Future Generation Computer Systems (FGCS), Vol. 93, Apr 2019, pp. 860-876 [Impact Factor: 6.125]; [Q1; CORE Rank: A]; https://doi.org/10.1016/j.future.2018.03.021
  8. 4.D. Airehrour, J. Gutierrez, Sayan K. Ray, “A Trust-based defence Scheme for Mitigating Blackhole and Selective Forwarding Attacks in the RPL Routing Protocol”, in Australian Journal of Telecommunications and the Digital Economy (AJTDE), Volume 6, No 1, 2018, pp. 41-49 [Invited Paper]; doi:10.18080/ajtde.v6n1.138
  9. D. Airehrour, J. Gutierrez, Sayan K. Ray, “A Trust-Aware RPL Routing Protocol to Detect Blackhole and Selective Forwarding Attacks”, in Australian Journal of Telecommunications and the Digital Economy (AJTDE), Vol 5, Issue No 1, March 2017, pp. 50-69 [Invited Paper]; https://doi.org/10.18080/jtde.v5n1.88
  10. E. Ndashimye, Sayan K. Ray, N. I. Sarkar, J. Gutierrez, “Vehicle-to-Infrastructure Communication over Multi-Tier Heterogeneous Networks: A Survey”, in Elsevier Computer Networks Journal, Vol. 112, January 2017, pp. 144-166 [Impact Factor: 3.11]; [Q1; CORE Rank: A]; https://doi.org/10.1016/j.comnet.2016.11.008
  11. F. Beltran, Sayan K. Ray, J. Gutierrez, “Understanding the Current Operation and Future Roles of Wireless Networks: Co-existence, Competition and Co-operation in the Unlicenced Spectrum Bands”, in IEEE Journal on Selected Areas in Communications (JSAC), Volume 34, No 11, Nov 2016, pp. 2829-2837 [Impact Factor: 11.42]; [Q1; CORE Rank: A] [in IEEE Xplore]; DOI:10.1109/JSAC.2016.2614951
  12. D. Airehrour, J. Gutierrez, Sayan K. Ray, “Secure Routing for Internet of Things: A Survey”, in Elsevier Journal of Network and Computer Applications (JNCA), Volume 66, May 2016, pp. 198-213 [Impact Factor: 5.57]; [Q1; CORE Rank: A]; https://doi.org/10.1016/j.jnca.2016.03.006
  13. Sayan K. Ray, K. Pawlikowski, H. Sirisena, "Handover in Mobile WiMAX Networks: The State of Art and Research Issues", IEEE Communications Surveys and Tutorials Magazine, Vol 12, No 3, August 2010, pp.376-399 [Impact Factor: 23.7]; [Q1; CORE Rank A] [in IEEE Xplore]; DOI: 10.1109/SURV.2010.032210.00064
  14. Sayan K. Ray, I. S. Misra, "Fourth Generation (4G) Networks: Roadmap-Migration to the Future", IETE Technical Review Journal, Vol. 23, No. 4, pp. 253-265, July-Aug 2006 [Best Paper Award], [Impact Factor: 1.61]; [Q2]; https://doi.org/10.1080/02564602.2006.11657953
Conferences
  1. A. Sarkar, Sayan K. Ray, “A Data Driven Decision Making and Contact Tracing App for Organizations to Combat COVID-19”, in Proc. of IEEE International Conference on Computing, Networking, Telecommunications & Engineering Sciences Applications (IEEE CoNTESA 2020), 9-10 Dec 2020, Tirana, Albania
  2. A. Hossain, Sayan K. Ray, R. Shahamiri, D. Ahmad, G. Singh, R. Arts, “An End-to-End Medical Emergency Response System to Support Elderly People”, in Proc. of 16th International Telecommunication Networks and Applications Conference (IEEE ITNAC 2020), 25-27 Nov 2020, Melbourne, New Zealand [IEEE Co-Sponsored]
  3. A. Mwangi, E. Ndashimye, Sayan K. Ray, B. Karikumutima, “An IoT-Alert System for Chronic Asthma Patients”, in Proc. of 11th Annual IEEE Information Technology, Electronics and Mobile Communication Conference (IEEE IEMCON 2020), 4-7 Nov 2020, Vancouver, Canada [Best Paper Award]
  4. A-J Clark, M. Modi, A. Hossain, Sayan K. Ray, G. Singh, “A Medical Emergency Response System for Elderly People”, in Proc. of 33rd Computing and Information Technology Research and Education New Zealand conference (CITRENZ 2020), 7-8 Oct 2020, New Zealand
  5. A. Sarkar, Sayan K. Ray, “Smart Contract-based Electric Vehicle Charging: A Practice-based Economy of Things Application”, in Proc. of The Pacific Asia Conference on Information Systems (PACIS 2020), 20-24 June 2020, Dubai, UAE [CORE Rank: A]
  6. F. Al-Ali, T. Gamage, H. Nanayakkara, F. Mehdipour, Sayan K. Ray, “Novel Implementation and Benchmarking of AlexNet for Edge Computing: From CPU and GPU to FPGA”, in Proc. of IEEE 33rd Canadian Conference of Electrical and Computer Engineering (IEEE CCECE 2020), 30 Aug-1 Sep 2020, Ontario, Canada [CORE Rank: C]
  7. A. Hossain, Sayan K. Ray, R. Shahamiri, “A Context-Aware and Technology-Assisted Informal Caregiver Selection Method to support Medical Emergency”, in Proc. of 15th International Telecommunication Networks and Applications Conference (IEEE ITNAC 2019), 27-29 Nov 2019, Auckland, New Zealand [IEEE Co-Sponsored]
  8. F. Al-Ali, T. Gamage, H. Nanayakkara, F. Mehdipour, Sayan K. Ray, “'Supercomputer Networks in the Datacenter: The Evolution of Communication Granularity from Macroscale down to Nanoscale”, in Proc. of 15th International Telecommunication Networks and Applications Conference (IEEE ITNAC 2019), 27-29 Nov 2019, Auckland, New Zealand [IEEE Co-Sponsored]
  9. F. Al-Ali, T. Gamage, H. Nanayakkara, F. Mehdipour, Sayan K. Ray, “Benchmarking a Machine Vision Image Classifier Implementation on FPGA Using  Binarized Neural Networks”, in Proc. of 32nd Computing and Information Technology Research and Education New Zealand conference (CITRENZ 2019), 9-11 Oct 2019, Nelson, New Zealand [Alison Young Best Paper Award]
  10. M. Kamruzzaman, N. I. Sarkar, J. Gutierrez, Sayan K. Ray, “A Mode Selection Algorithm for Mitigating Interference in D2D Enabled Next-Generation Heterogeneous Cellular Networks”, in Proc. of 33rd International Conference on Information Networking (IEEE ICOIN 2019), 9-11 Jan 2019, Kuala Lumpur, Malaysia [IEEE Co-Sponsored]
  11. A. Hossain, Sayan K. Ray, “A Technology-Assisted Framework For Medical Emergencies Involving Formal and Informal Caregivers”, in 17th IEEE International Conference Ubiquitous Computing and Communication (IEEE IUCC 2018), 11-13 December 2018, Melbourne, Australia [IEEE Co-Sponsored]
  12. M. G. A. Malik, Sayan K. Ray, Z. Bashir, A. Mughal, “'Selecting Ubiquitous Services in Future Heterogeneous Wireless Networks Using Multi-Attributes Decision Making”, in 11th International Conference on Mobile Computing and Ubiquitous Network (IEEE ICMU 2018), 5-8 Oct, 2018, Auckland, New Zealand [IEEE Co-Sponsored]
  13. F. Beltran, Sayan K. Ray, J. Gutierrez, “Dynamic Spectrum Management in 5G: Lessons from Technological Breakthroughs in Unlicenced Bands Use”, in 3rd EAI International Conference on Smart Grid and Innovative Frontiers in Telecommunications (EAI Smartgift 2018), 23-25 April, 2018, Auckland, New Zealand
  14. A. Hossain, Sayan K. Ray, “A Smartphone and IoT-Assisted Post-Disaster Communication and Recovery Method”, in 3rd EAI International Conference on Smart Grid and Innovative Frontiers in Telecommunications (EAI Smartgift 2018), 23-25 April, 2018, Auckland, New Zealand
  15. D. Airehrour, J. Gutierrez, Sayan K. Ray, “SecTrust: A Trust and Recommendation System for Peer-to-Peer Networks”, in Proc. of 11th International Conference on Information Resources Management (Conf-IRM 2018), 4-6 June 2018, Ningbo, China [CORE Rank: B]
  16. D. Airehrour, J. Gutierrez, Sayan K. Ray, “A Testbed Implementation of a Trust-Aware RPL Routing Protocol”, in Proc. of International Telecommunication Networks and Applications Conference (IEEE ITNAC 2017), 22-24 Nov 2017, Melbourne, Australia [in IEEE Xplore]
  17. E. Ndashimye, N. I. Sarkar, Sayan K. Ray, “A Mobility-Aware Network Selection Method for Vehicle-to-Infrastructure Communication over LTE-A Multi-tier Networks”, in Proc. of 31st International Conference on Information Networking (IEEE ICOIN 2017), 11-13 Jan 2017, Da Nang, Vietnam [Best Paper Award] [in IEEE Xplore]
  18. Z. Kamruzzaman, N. I. Sarkar, Sayan K. Ray, “A Study of IoT-based Post-Disaster Management”, in Proc. of 31st International Conference on Information Networking (IEEE ICOIN 2017), 11-13 Jan 2017, Da Nang, Vietnam [in IEEE Xplore]
  19. A. Hossain, Sayan K. Ray, R. Sinha, “A Smartphone-assisted Post-Disaster Victim Localization Method”, in Proc. of 18th IEEE International Conference on High Performance Computing and Communications (IEEE HPCC 2016), 12-14 Dec 2016, Sydney, Australia [CORE Rank: B] [in IEEE Xplore]
  20. D. Airehrour, J. Gutierrez, Sayan K. Ray, “Securing RPL Routing Protocol from Blackhole Attacks Using a Trust-based Mechanism”, in Proc. of 13th International Telecommunication Networks and Applications Conference (IEEE ITNAC 2016), 7-9 Dec 2016, Dunedin, New Zealand [IEEE Co-Sponsored] [Best Session Paper] [in IEEE Xplore]
  21. E. Ndashimye, N. I. Sarkar, Sayan K. Ray, “A Novel Network Selection Mechanism for Vehicle-to-Infrastructure Communication”, in Proc. of 14th IEEE International Conference on Pervasive Intelligence and Computing (IEEE PiCom 2016), 8-12 August 2016, Auckland, New Zealand [in IEEE Xplore]
  22. D. Airehrour, J. Gutierrez, Sayan K. Ray, “A Lightweight Trust Design for IoT Routing”, in Proc. of 14th IEEE International Conference on Pervasive Intelligence and Computing (IEEE PiCom 2016), 8-12 August 2016, Auckland, New Zealand [in IEEE Xplore]
  23. D. Airehrour, J. Gutierrez, Sayan K. Ray, “Greening and Optimizing Energy Consumption of Sensor Nodes in the Internet of Things through Energy Harvesting: Challenges and Approaches”, in Proc. of International Conference on Information Resources Management (Conf-IRM 2016), 18-20 May 2016, Cape Town, South Africa [CORE Rank: B]
  24. D. Airehrour, J. Gutierrez, Sayan K. Ray, "GradeTrust: A Secure Trust Based Routing Protocol for MANETs", in Proc. of 12th International Telecommunication Networks and Applications Conference (IEEE ITNAC 2015), 18-20 Nov 2015, Sydney, Australia [ERA Rank B] [in IEEE Xplore]
  25. Sayan K. Ray, R. Sinha, S. K. Ray, "A Smartphone-based Post-Disaster Management Mechanism using WiFi Tethering", in 10th IEEE Conference on Industrial Electronics and Applications (IEEE ICIEA 2015), 15-17 June 2015, Auckland, New Zealand [ERA Rank A] [in IEEE Xplore]
  26. S. R. Shahamiri, Sayan K. Ray, "On the Use of Array Learners Towards Automatic Speech Recognition for Dysarthria", in 10th IEEE Conference on Industrial Electronics and Applications (IEEE ICIEA 2015), 15-17 June 2015, Auckland, New Zealand [ERA Rank A] [in IEEE Xplore]
  27. Sayan K. Ray, N. I. Sarkar, D. Deka, S. Ray, "LTE-Advanced based Handover Mechanism for Natural Disaster Situations", in Proc. of 29th International Conference on Information Networking (IEEE ICOIN 2015), Siem Reap, Cambodia, 12-14 Jan 2015 [in IEEE Xplore]
  28. Sayan K. Ray, J. Gutierrez, "On Applications and Profiles for Policy-based Pricing of Ubiquitous Services", in Proc. of 25th Australasian Conference on Information Systems (ACIS 2014), 8-10 December 2014, Auckland, New Zealand [ERA Rank A]
  29. V. Samaras, S. Daskapan, R. Ahmad, Sayan K. Ray, "An Enterprise Security Architecture for Accessing SaaS Cloud Services with BYOD", in Proc. of 11th Australasian Telecommunication Networks and Applications Conference (IEEE ATNAC 2014), 26-28 Nov 2014, Melbourne, Australia [ERA Rank B] [in IEEE Xplore]
  30. J. Gutierrez, Sayan K. Ray, "Policy-based Pricing for Pervasive Services in Future Heterogeneous Wireless Access Network", in Proc. of 29th International Conference on Information Networking (IEEE ICOIN 2014), 10-12 Feb 2014, pp. 181-185, Phuket, Thailand [in IEEE Xplore]
  31. E. T. Yezdi, A. Moravejosharieh, Sayan K. Ray, "Study of Target Tracking and Handover in Mobile Wireless Sensor Network", in Proc. of 29th International Conference on Information Networking (IEEE ICOIN 2014), 10-12 Feb 2014, pp. 120-125, Phuket, Thailand [in IEEE Xplore]
  32. Sayan K. Ray, W. Liu, H. Sirisena, D. Deka, S. K. Ray, "An Energy Aware Mobile-Controlled Handover Method for Natural Disaster Situations", in Proc. of 10th Australasian Telecommunication Networks and Applications Conference (IEEE ATNAC 2013), 20-22 Nov 2013, pp. 130-135, Christchurch, New Zealand [ERA Rank B] [in IEEE Xplore]
  33. Sayan K. Ray, H. Sirisena, D. Deka, "LTE-Advanced Handover: An Orientation Matching-based Fast and Reliable Approach", in Proc of 38th IEEE Conference on Local Computer Networks (IEEE LCN 2013), 21-24 Oct 2013, Sydney, [CORE Rank A] [in IEEE Xplore]
  34. Sayan K. Ray, "On the Design of Fast Handovers in Mobile WiMAX Networks", Ph.D Thesis, University of Canterbury, 2012.
  35. Sayan K. Ray, H. Sirisena, D. Deka, "Fast and Reliable Target Base Station Selection Scheme for Mobile WiMAX Handover", in Proc. of 9th Australasian Telecommunication Networks and Applications Conference (IEEE ATNAC 2012), 7-9 Nov 2012, Brisbane, Australia [ERA Rank B] [in IEEE Xplore]
  36. M. Haque, K. Pawlikowski, Sayan K. Ray, "Challenges to Development of Multipurpose Global Federated Testbed for Future Internet Experimentation", in Proc. of 9th ACS/IEEE International Conference on Computer Systems and Applications (AICCSA 2011), 27-30 December 2011, pp. 289-292, Sharm El-Sheikh, Egypt [CORE Rank: C] [in IEEE Xplore]
  37. Sayan K. Ray, S. K. Ray, K. Pawlikowski, A. McInnes, H. Sirisena, "A Fast and Simple Scheme for Mobile Station-Controlled Handover in Mobile WiMAX", in Proc. of 5th International Conference on Access Networks (Accessnets 2010), 3-5 November 2010, pp. 32-44, Budapest, Hungary
  38. Sayan K. Ray, S. K. Ray, K. Pawlikowski, A. McInnes, H. Sirisena, "Self-Tracking Mobile Station Controls Its Fast Handover in Mobile WiMAX", in Proc. of IEEE Wireless Communications and Networking Conference (IEEE WCNC 2010), 18-21 April 2010, pp. 1-6, Sydney, Australia [ERA Rank A] [in IEEE Xplore]
  39. Sayan K. Ray, K. Pawlikowski, H. Sirisena, "A Fast Predictive Handover Mechanism for IEEE 802.16e Systems", in 7thNew Zealand Computer Science Research Student Conference (NZCSRSC 2009), 6-9 April 2009, Auckland, New Zealand
  40. Sayan K. Ray, K. Pawlikowski, H. Sirisena, "A Fast MAC-Layer Handover for an IEEE 802.16e-Based WMAN", in Proc. of LNCS 3rd International Conference on Access Networks (AccessNets 2008), 15-17 Oct 2008, Las Vegas, USA. Published as LNCS Book Chapter for Accessnets, vol 6, pp. 102-117, 2009, ISSN: 1867-8211 (Print) 1867-822X (Online)
  41. Sayan K. Ray, A. Mandal, K. Pawlikowski, H. Sirisena, "Hybrid Predictive Base Station (HPBS) Selection procedure in IEEE 802.16e-Based WMAN", In Proc. of 4th Australasian Telecommunication Networks and Applications Conference (IEEE ATNAC 2007), pp. 93-98, 2-5 Dec 2007, Christchurch, New Zealand [in IEEE Xplore]
  42. S. K. Ray, R. Bhattacharya, Sayan K. Ray, "Wordlength-Programmable Auto-Configured Memory Unit", In Proc. of International Conference on Recent Trends in Information Systems (IRIS 2006), 6-8 Jan 2006, Tamil Nadu, India.
Scholarly activities

Current and past research projects (in collaboration with researchers from other institutes):

Mental Health Disorders among Elderly People in Community: How can Technology Support in their Well-being

Mental illness, particularly, moderate to strong level of anxiety, depression, dementia and Alzheimer’s, can severely impact on people’s lives. A recent survey on Mental health found that almost one-third of people in New Zealand have a personal experience of mental distress [1]. Such problems are more evident among the elderly population and especially for those living alone and less socially engaged. Loneliness and social isolation are reported to occur in approximately one-third or more of older adults. Mental health problems are under-identified by health-care professionals and older people themselves, and the stigma surrounding these conditions makes people reluctant to seek help or ask for immediate support even from near and dear ones or from the community.

The focus of this research work is elderly people suffering from dementia and Alzheimer’s. The work will survey how technology can help them manage their activities and well-being, will explore options of how to detect and predict falls and wandering, which are the two most common symptoms among the dementia and Alzheimer’s patients, and finally will propose a community-based system to help out such patients in need.

Technology-Assisted System to Support Medical Emergency Situations of Elderly People

This research work aims to design and develop a technology-assisted medical emergency system that will integrate a layer of informal caregivers (friends, family, neighbours) with the existing formal caregivers, like ambulance and paramedics, to create an end-to-end emergency response system. The informal caregivers will act as the first responders to attend the elderly patients before the arrival of the ambulance. A context-aware recommendation system will be developed to shortlist and select the most appropriate informal caregiver for a medical emergency situation based on different contextual parameters. This work will use IoT and Machine Learning algorithms.

Dynamic Spectrum Sharing and Management between heterogeneous Technologies in the Unlicenced Bands

This project work is studying the effect of dynamic spectrum sharing between technologies like LTE, WiFi, IoT, 5G-NR in the different unlicenced bands. The aim is to propose dynamic spectrum sharing and management techniques for the coexistence of the heterogeneous technologies in unlicenced bands.

IoT and Cellular Networks-based Natural Disaster Management

This project focuses on mechanisms of energy-aware network congestion-control, tracking of people and effective traffic offloading after the occurrence of natural disaster incidents. IoT and cloud-based disaster management infrastructures are explored.

QoS in Next-Generation Vehicle-to-Infrastructure (V2I) Communication in Multi-Layered and Multi-Radio Network Environments

This project is on novel context-aware and QoS-oriented V2I mobility and handover mechanisms in 5G multi-cell multi-layered heterogeneous environment consisting of LTE-A / Mobile WiMAX and WiFi networks.

Secured Routing in IoT

This project work was about the secured routing of data through IoT networks. A trust-based framework was developed that can be applied to secure IoT routing protocols.

Policy-based Pricing for Ubiquitous Services in Heterogeneous Networks

This project aimed to develop new customer-centric, policy-based pricing schemes and models for different ubiquitous services for next-generation (5G) heterogeneous networks.

PhD supervisions

At Auckland University of Technology and Taylor's University:

  • 2014 – 2017: David Airehrour (Graduated), "A Secure Routing Framework for Internet of Things (IoT)" (Role: Associate Supervisor)
  • 2014 – present: Emmanuel Ndashimye (Graduated), "Achieving Quality of Service for Vehicle-to-Infrastructure Communications over Heterogeneous Wireless Networks" (Role: Associate Supervisor)
  • 2015 – present: Md Kamruzzaman, "IoT and Cloud-based Framework for Managing Traffic Congestion for Base Stations in Post-Disaster Situations" (Role: Associate Supervisor)
  • 2019 - present: “Secure Dynamic Routing for FANETs and IoT in Smart Farming” (Role: Co-Supervisor; Taylor’s University, Malaysia).
Recent achievements
  • 2020: Sayan and two other co-authors were invited to be members of International Telecommunication Union’s (ITU) Focus Group on Vehicular Multimedia (ITU-T FG-VM) to contribute to the standardization activities of vehicular multimedia networks
  • 2020: Invited speaker at Smart Devices Symposium 2020, Osaka, Japan
  • 2019:
  • Given an invited keynote speech (in the 5G/6G and SDN/NFV session) on “Dynamic Spectrum Management in 5G and Beyond: Technological Breakthroughs in Unlicenced Bands Use” at the6th Annual World Congress of InfoTech-2019, 10-11 May 2019, Nanjing, China
  • 2017: Sayan and two other co-authors were invited to be members of IoT Alliance Workstream (IoT Alliance Australia) to contribute on IoT security guidelines for industry
  • 2016: Given an invited keynote talk on “Spectrum Sharing Initiatives in Unlicenced Bands: Advancements towards 5G” at the 6th International Conference on Advances in Computing & Communications (ICACC-2016), 6-8 Sept 2016, Kochi, India [IEEE Co-Sponsored]
  • 2014: Research idea selected for New Zealand Return on Science programme for 'research commercialization' (competitive selection)
  • 2013: Successfully completed the Icehouse Hatchery Programme for Entrepreneurship in 2014
  • 2010: Successfully completed the Summer Institute for Entrepreneurship (SIE) course offered by Graduate School of Business, Stanford University in 2010 (selection was highly competitive).
Technical program committee memberships

IEEE APWiMob 2021; IEEE Cloud Summit 2020, IEEE Globecom workshop 2020; ITNAC 2020; ICCAIS 2020; CSNT 2020; ICOIN 2019; APWiMob 2019; APCC 2019; CICN 2019; IEEE ICC 2018; CoCoNET 2018; CSNT 2018; ARiEET 2017; IEEE SCOReD 2017; IEEE ICC 2017; IEEE APCC 2016; IEE ICC 2016; IEEE MCSoC 2016; CoCoNet 2015; IEE ICC 2015; IEEE MCSoC 2015; TAFGEN 2015; IEEE ICC 2014; IEEE ISWTA 2014; IEEE ICC WS-SDN 2014; IEEE MCSoC 2014; IEEE ICCVE 2013; IEEE ICWiSe 2013; IEEE ISWTA 2013; IEEE PIMRC 2012; IEEE ISWTA 2012; IEEE APACE 2012.

Journal reviewer
  • IEEE Sensors 2021
  • IEEE Access 2021, 2020, 2019, 2018;
  • Elsevier Computer Networks 2021, 2020, 2019, 2018;
  • Elsevier Ad-Hoc Networks 2020, 2019;
  • Journal of Information and Knowledge Management 2020, 2019;
  • Elsevier International Journal of Disaster Risk Reduction 2020, 2019, 2018;
  • IEEE Transactions on Industrial Electronics 2019, 2018;
  • IEEE Communications Magazine 2021, 2020, 2019, 2018, 2017, 2016;
  • Elsevier Journal of Network and Computer Applications 2020, 2019, 2018, 2017, 2016, 2015, 2014;
  • Sensors Journal 2020, 2019, 2018, 2017, 2015;
  • Hindawi International Journal of Distributes Sensor Networks 2014;
  • IEEE Transactions on Vehicular Technology 2013, 2012;
  • IEEE Transactions on Wireless Communications 2012, 2011, 2010;
  • Elsevier Computer Communications 2012;
  • International Journal of Wireless and Mobile Computing 2012;
  • ACM/Springer Wireless Networks Journal 2011
Book authored

"Complete Reference to Computer Organization and Architecture" (9th Edition), published by Matrix Educare, Kolkata, India.

Thesis examined
  • 2020: “Security Test Penetration and Digital Forensic Research of SPA Devices”
  • 2019: “Teaching Staff Awareness and use of Infographic Technology in the School of Engineering, Computer and Mathematical Sciences”
  • 2016: “Emergency Broadcast System – A Reverse 911 Tsunami Information Dissemination System Prototype: The case of Indonesia”
  • 2015: “A Feasibility Study of WiFi-Based Vehicular Ad Hoc Network in the Westfield Shopping Mall Parking Lot using Field Trial Measurements and Simulation”
  • 2014: "Policy-Based Management Approach for Energy Efficient Cloud Computing Infrastructure"
  • 2013: "Trust-based Energy-Aware Geographical Routing for Smart Grid Communications Networks"
  • 2013: "Energy Efficient Scheduling Manager for Cloud-based Mobile Applications".
Seminars and talks
  • “A Data Driven Decision Making and Contact Tracing App for Organizations to Combat COVID-19” – in CoNTESA 2020 conference, Tirana, Albania
  • “An End-to-End Medical Emergency Response System to Support Elderly People” – in ITNAC  2020 conference, Melbourne, Australia
  • “Smart Contract-based Electric Vehicle Charging: A Practice-based Economy of Things Application” – in PACIS 2020 conference, Dubai, UAE
  • “A Context-Aware and Technology-Assisted Informal Caregiver Selection Method to support Medical Emergency” – in IEEE ITNAC 2019 conference, Auckland, New Zealand
  • “Dynamic Spectrum Management in 5G and Beyond: Technological Breakthroughs in Unlicenced Bands Use” – in InfoTech 2019 conference, Nanjing, China
  • “Spectrum Sharing in Unlicenced Bands in 5G and Beyond 5G Wireless Systems” – in 2019 IEEE NZ Wireless Workshop, Hamilton, New Zealand
  • “A Technology Assisted Framework For Medical Emergencies Involving Formal and Informal Caregivers” – in IEEE IUCC 2018 conference, Melbourne, Australia
  • “Dynamic Spectrum Management in 5G: Lessons from Technological Breakthroughs in Unlicenced Bands Use” – in EAI Smartgift 2018 conference, Auckland, New Zealand
  • “A Study of IoT-based Post-Disaster Management” – in IEEE ICOIN 2017 conference, Da Nang, Vietnam
  • “A Mobility-Aware Network Selection Method for Vehicle-to-Infrastructure Communication over LTE-A Multi-tier Networks” – in IEEE ICOIN 2017 conference, Da Nang, Vietnam
  • “A Smartphone-assisted Post-Disaster Victim Localization Method” – in IEEE HPCC 2016 conference, Sydney, Australia
  • "Spectrum Sharing between LTE and Wi-Fi: An Exploratory Study" – in 2015 IEEE NZ Wireless Workshop, University of Auckland, New Zealand
  • "A Smartphone-based Post-Disaster Management Mechanism using WiFi Tethering" – in IEEE ICIEA 2015 conference, Auckland, New Zealand
  • "LTE-Advanced based Handover Mechanism for Natural Disaster Situations" – in ICOIN 2015 conference, Siem Reap, Cambodia
  • "Policy-based Pricing for Pervasive Services in Future Heterogeneous Wireless Access Network" – in ICOIN 2014 conference, Phuket, Thailand
  • "Study of Target Tracking and Handover in Mobile Wireless Sensor Network" – in ICOIN 2014 conference, Phuket, Thailand
  • "Energy Aware Mobile-Controlled Handover Method for Natural Disaster Situations" – in ATNAC 2013 conference, Christchurch, New Zealand
  • "Energy Aware Mobile-Controlled Handover Method for Natural Disaster Situations" – in IEEE NZ Wireless Workshop 2013, Wellington, New Zealand
  • "Fast and Reliable Target Base Station Selection Scheme for Mobile WiMAX Handover" – in ATNAC 2012 conference, Brisbane, Australia
  • "Fast and Reliable Target Base Station Selection Scheme for Mobile WiMAX Handover" – in IEEE Wireless Workshop 2012, AUT, Auckland, New Zealand
  • "An Unique Charging System for Electric Cars" – Graduate School of Business, Stanford University, USA, 2010
  • "A Fast and Simple Scheme for Mobile Station-Controlled Handover in Mobile WiMAX" – in Accessnets 2010 conference, Budapest, Hungary
  • "Self-Tracking Mobile Station Controls Its Fast Handover in Mobile WiMAX" – in IEEE WCNC 2009, Sydney, Australia
  • "A Fast Predictive Handover Mechanism for IEEE 802.16e Systems" – in NZCSRSC 2009, Auckland, New Zealand
  • "A Fast MAC-Layer Handover for an IEEE 802.16e-Based WMAN" – in Accessnets 2008, Las Vegas, USA
  • "A New Handover Scheme for Mobile WiMAX Networks" - Dept. of Computer Sc and Software Engineering, University of Canterbury, 2008
  • "Hybrid Predictive Base Station (HPBS) Selection procedure in IEEE 802.16e-Based WMAN" – in IEEE NZ Workshop 2007, Wellington, New Zealand
  • "A Hybrid Base Station Selection Scheme for Mobile WiMAX Handover" - Dept. of Computer Sc and Software Engineering, University of Canterbury, 2007
  • "WiMAX Interworking Scenarios: Migration towards 4G Systems" - Dept. of Computer Sc and Software Engineering, University of Canterbury, 2006
  • "Checkpointing and Roll-Back Recovery Technique in Distributed Systems" – Dept. of Computer Science and Engineering, University of Calcutta, 2002
LinkedIn and Google scholar profiles:
Awards and grants
Awards
  • Best Paper Award at 11th IEEE IEMCON 2020 conference in Vancouver, Canada (Nov 2020)
  • Recipient of Manukau Institute of Technology’s Research Excellence Award in 2019
  • Alison Young Best Paper Award at CITRENZ 2019 Conference in New Zealand
  • Best Paper Award at 31st ICOIN 2017 conference in Vietnam (Jan 2017)
  • Best Session Paper Award at 13th ITNAC 2016 conference in New Zealand (Dec 2016)
  • Recipient of Manukau Institute of Technology Outstanding Achievement (Performance) Award (for all-round teaching, research and strategic contribution) in 2015
  • Recipient of Manukau Institute of Technology Teaching Excellence Award in 2015
  • University of Canterbury contestable conference travel grant to Budapest in 2010
  • New Zealand Foundation for Research, Science and Technology (FRST) funding (competitive) to attend the Summer Institute for Entrepreneurship (SIE) at the Graduate Business School, Stanford University, USA in 2010
  • University of Canterbury contestable conference travel grant to Sydney in 2010
  • New Zealand BuildIT Conference Travel Award (contestable) to Las Vegas in 2008
  • University of Canterbury Doctoral Scholarship in 2006
  • Gowri Memorial Award in 2006 for best research paper in IETE Journal.
Comprehensive research grants
  • 2021: NZ$ 18,607 from Manukau Institute of Technology for project, “Mental Health Disorders among Elderly People in Community: How can Technology Support in their Well-being?” – Role: Principal Investigator
  • 2021: NZ$ 10,219 from Manukau Institute of Technology for project, “An Investigation on Implementing IoT based intelligent malware analysis system using deep learning” – Role: Co-Investigator
  • 2020: NZ$ 28,480 from Manukau Institute of Technology for project, “Design and Development of a Technology-Assisted System to Support Medical Emergency Situations of Elderly People” – Role: Principal Investigator
  • 2020: NZ$ 18,600 from Manukau Institute of Technology for project, “Developing an Innovative Predictive Policing AI System for Crime Prevention in South Auckland.” – Role: Co-Investigator
  • 2019: NZ$ 22,026.54 from Manukau Institute of Technology for project, “Context-Aware Design of an Informal Caregiver Framework for Medical Emergency Situations” – Role: Principal Investigator
  • 2019: NZ$ 15,000 from Manukau Institute of Technology for project, “Deep Neural Network-based Speaker Identification to Increase Smart Devices Security” – Role: Co-Investigator
  • 2018: NZ$ 14K from Manukau Institute of Technology for project, “Crowdsourced framework for neighbour assisted medical emergency system” - Role: Principal Investigator
  • 2017: NZ$8K from Manukau Institute of Technology for project, “Handheld Device-assisted Post-Disaster Victim Localization System” – Role: Principal Investigator
  • 2016: NZ$10K from Manukau Institute of Technology for project, “Mixed Criticality-based Post Disaster Management System” – Role: Principal Investigator
  • 2015: NZ$9K from Manukau Institute of Technology for project, "Smartphone-based natural disaster management system" – Role: Principal Investigator
  • 2014: NZ$5K from Manukau Institute of Technology for project, "Personalized pricing framework for users in a heterogeneous network environment" – Role: Principal Investigator
  • 2013: NZ$15K from Auckland University of Technology for project, "Congestion-control framework for cellular networks in natural disaster"– Role: Co-Investigator
Industry activities
  • 2015-2020: Maintains active engagement (meetings, discussions) with industries. This includes supervising students' industry projects in their final year of study.
  • 2014: Involved with Stqry NZ Ltd as the Wireless Technology Expert for indoor location tracking project. My responsibility was to research on indoor location tracking techniques and design WiFi and iBeacon-based location tracking mechanisms for smart phones.
  • 2013-2014: Involved in research commercialization initiative (supported by Icehouse and Return on Science, Auckland)
Memberships and affiliations
  • IEEE Computer Society
  • IEEE Communication Society
  • Association for Information Systems (AIS)
  • Institute of IT Professionals (IITP), New Zealand
Research collaborations

Sayan collaborates with researchers from the following institutes:

  • Auckland University of Technology, New Zealand
  • Auckland University, New Zealand
  • Massey University, New Zealand
  • Ara Institute of Canterbury, New Zealand
  • University of East London, UK
  • Sejong University, South Korea
  • Taylor’s University, Malaysia
  • Jadavpur University, India.