Today's Internet needs to support untethered communications, mobility, quality of service, sensing and actuation, user-programmability and, most importantly, sustainability through the use of renewable energy. My research aims to meet those needs from the networking protocols perspective, addressing the needs of 5G networks, the Internet of Things and other machine-type communications technologies, encompassing both long-range communications (LTE-A, Narrowband IoT) as well as, short range technologies (IEEE802.15.4, 6LoWPAN, RPL, etc.)
As a member of the Wireless Networks Research Group (WiNe), my latest research on the Internet of Things focuses on Industrial IoT, Wireless Sensor Networks Powered by Ambient Energy Harvesting (WSN-HEAP), wireless sensor networks for structural health monitoring, wireless multi-hop networks and mobility-enhanced protocols and algorithms for smart networked sensing applications. Critical issues being addressed include quality of service (QoS) support for multimedia traffic, environmentally-friendly (green) technology for wireless communication networks, and application of software defined networking in the Internet of Things.
I have worked for more than 16 years in mission-oriented research, taking ideas from theory to prototypes. You can read more about my research and also access some of my papers from my personal web page.
Intuitive Sensing and Actuation using Biological, Environmental and Physical Signals
Robust End-to-End Wireless Networking Protocols for Harsh Environments
Wireless Sensor Networks Powered by Ambient Energy Harvesting (WSN-HEAP)
Environmentally-Friendly (Green) Protocols for Wireless Communications Networks
Restoration and Rehabilitation of the Natural Environment using Info-Communication Technologies
For some details on the above, you can refer to the here. If you wish to work on the security aspects of the above topics, you can also contact me to discuss how the security issues can fit within the broader area of Network Anomaly Detection.
For details of VUW's postgraduate studies and process of applying for admission, please refer to the Prospective Postgraduates webpage.
Keynote and invited lectures on IoT, 2017~2018
Title: Making Sense out of IoT Non-Sense (slides - hi-res 18MB; med-res 5.2MB)
Synopsis: The Internet has transformed from its original form that connects computers utilized by humans to one that connects objects, sensors, and any foreseeable device in everyday life, giving rise to the “Internet of Things”. Coined by Kevin Ashton in 1999, the term “Internet of Things” (IoT) refers to this new Internet where devices generate data and communicate, interacting often without any human intervention. Industry and academia alike have exploited IoT in marketing and securing grants respectively, purporting numerous new futuristic IoT products and research as far-fetched as IoT storytelling!!! This talk aims to put some context into the different definitions of IoT, the research challenges, and hopefully make some sense out of IoT “non-sense”.
Presentation to VUW Alumni in Singapore and Malaysia, May 2013
Title: Vic Engineering -- Addressing the Digital ICT Age (slides - pdf 66 MB).
Invited Lecture at National Taiwan University and Hong Kong Polytechnic University, 2011
Title: Information & Communication Technology (ICT) Powered by Energy Harvesting
Synopsis: Communication networks have become an integral part of our society. While we have become unconnected by wires for our communication needs, we are still "connected" by the need for the energy that powers the various communication devices. The enormous amounts of energy consumed by the communication networks has become a hotly debated issue with respect to the harm it is causing to our environment. This has opened up new research areas that look into ways of reducing energy consumption and alternative forms of renewable energy sources. In this talk, we will first briefly talk about general trends in environmentally friendly ICT. Then, we will focus on the research on wireless sensor networks powered by ambient energy harvesting. In this aspect, we will discuss some of the latest research efforts and developments on networking protocol design and conclude with a summary of the open research problems.
You can download the slides(pdf document - 4 MB).
Inaugural Lecture on May 11, 2010
Title: Wireless Communication Networks in Extreme Environments : Trends and Challenges.
Synopsis: The use of wireless communications is swiftly extending beyond networks for the average person to networks for embedded devices, sensors and autonomous systems, as well as networks for personnel in extreme environments—underground, underwater and in disaster situations. Many existing wireless networking technologies have not been designed to handle conditions presented by such environments and may not operate up to expectations. Some may even fail totally. This lecture discusses the challenges of designing robust wireless networks for communications in these extreme environments as well as issues to be addressed in order for research to be implemented and deployed in a realistic environment.
You can download the slides (pdf document - 23.3 MB). Podcast of the lecture is available here.