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Current
Projects Information for
students: Assistantship is available to Master or PhD students. Refer here for application instructions.
Optimized
Autonomous Space In-Situ Sensorweb
[Funded by NASA Advanced
Information System Technology Program, $1.6M for 3 years, with B. Shirazi, S. Chien, R. LaHusen, S. Kedar
and F. Webb]
Funded by NASA, a
multidisciplinary team involving computer scientists (Washington State University), space
scientists (JPL), and Earth scientists (USGS Cascade Volcano Observatory (CVO)), will
develop a prototype dynamic and scaleable hazard monitoring sensor-web and apply it to
volcano monitoring. The combined Optimized Autonomous Space - In-situ Sensor-web (OASIS)
will have two-way communication capability between ground and space assets, use both space
and ground data for optimal allocation of limited power and bandwidth resources on the
ground, and use smart management of competing demands for limited space assets.
 |
We propose to develop a prototype
real-time Optimized Autonomous Space - In-situ Sensor-web, with a focus on volcano hazard
mitigation and with the goals of: 1. Integrating complementary space and in-situ elements
into an interactive, autonomous sensor-web. 2. Advancing sensor-web power and
communication resource management technology. 3. Enabling scalability and seamless
infusion of future space and in-situ assets into the sensor-web.
Figure 1: Optimized Autonomous Space - In-situ Sensor-web concept: 1. In-situ sensor-web
autonomously determines topology node bandwidth and power allocation. 2. Activity level rises causing self-organization
of in-situ network topology and a request for re-tasking of space assets. 3. High-resolution remote-sensing data is acquired
and fed back to the control center. 4. In-situ
sensor-web ingests remote sensing data and re-organizes accordingly. Data are publicly available at all stages. |
Smart Sensor Networks for Mine Safety and Guidance
The low cost smart mine safety and guidance system is based on the cutting edge self-organizing
and self-healing wireless sensor network technologies. The system consists of infrastructure nodes on
the ceiling of tunnel walls and mobile nodes with miners. It provides safety alert, safety guidance,
emergency escape and rescue functions. The control center can monitor the tunnel's environment situations
and the miners' locations in the tunnel in real time.
The proposed system can provide the following functions:
(1) Mine Communications. Mesh networking of infrastructure and mobile nodes can enable awareness of real-time tunnel situations
at control center or miners at the tunnel. It also supports text messaging between miners in the tunnel.
(2) Mine Tracking. The location of miners who are equipped with a mobile node can be tracked by the control
at real-time. This is extremely important when rescue are necessary.
(3) Mine Escape. In case there is an explosion, sustained mine fire, equipment fire or gas or water inundation,
the system can detect that and locate those regions, and intelligently calculate an escape route to exit.
The escape route will be marked with LED display attached on infrastructure nodes.
(4) If some miners are trapped in the tunnel, the rescuers can drill a hole and drop down a temporary node, which
will then reconnects the trapped miners to the ground. A precise rescue plan can be devised thereafter.
Gas Tracking and Monitoring Network
Details under construction ...
Smart sensor network for volcano monitoring
[Funded by WSU Vancouver Research
Mini-grant ]
-- Given an deployed sensor networks for environmental
monitoring application, we are concerning how to gather information to sink in both energy
and time efficient way, and how to deploy a sensor network such that the information
gathering is most efficient.
-- Currently, in collaboration with geologists,
we are developing a self-configuring/self-healing remote volcano monitoring network
in erupting volcano - Mount St. Helens.
Distributed content sharing system
-- If we don't know where our interested information is, how can we find it?
Google? It helps, but can we find real-time information through it? No way at this time.
The fundamental reason is that it is based on web model, which is more like a static
library of digital books only.
-- This project is concerning how to organize information in a distributed content-based
routing model and enable efficient information sharing in networks.
Research Motivation: Networking technology was born to enable efficient
information sharing at anywhere during anytime. It boosted the golden age of IT
industry in the past decade. However, the key goals are still not reached yet: how to find
our interested information immediately if we don't know where it is? how to
share/collect information efficiently in/from an unattended environment? My
research work is largely motivated by those needs of real-time and ubiquitous information
gathering and sharing.
Past Projects
Network Protocol and Algorithm Design
Maximize Network Lifetime of Two-tiered
Sensor Networks
-- Wireless sensor networks are expected to largely deployed due to its various
applications such as monitoring environments. In many applications, the sensor network
consists of base stations, actor sensors and many small sensors, organized in a
hierarchical way. My ongoing research is investigating how to assign small sensors to
actor sensor and place the base stations into the network such that the network lifetime
is maximized.
Energy Efficiency and Network Capacity in Wireless Ad hoc
Networks
-- Energy efficiency and network performance are two most critical issue in wireless
networks. I proposed the strategies for each wireless device to select communication
neighbors and its transmission range, only according to its neighborhood information,
while maintaining a global network topology to support energy efficient routings. The
topology can be locally updated to dynamic changes.We also studied spectrum reuse problem
to further improve network capacity.
Efficient Self-routing Bluetooth Scatternet
-- While several solutions and commercial products have been introduced for
one-hop Bluetooth communication, the Bluetooth specification does not indicate any method
for scatternet formation. I proposed an efficient method to form scatternet with
self-routing property, i.e., zero-size routing tables. In addition, a scalable piconet MAC
assigning and scheduling mechanism is embedded to provide efficient routings.
Content Based Routing Service over Internet Backbone
-- Internet becomes the main medium for information sharing. However, it lacks
of an efficient mechanism to locate resources in real-time, because all routing protocols
are based on address. Internet backbone needs information-directed routing mechanism to
sustain the future intelligent applications. I proposed an architecture to enable
real-time information sharing over Internet.
Network System Design
Wireless System Snapshot Tools, Lucent Technologies,
Naperville IL, USA
-- Designed a framework for automatically gathering, analyzing and
presenting system snapshot data from Mobile Switching Center (MSC). These tools are
currently used in Indian Reliance Projects deployment and proved to be a time saver. [See Demo]
Multi-Service Access Platform, Alcatel Shanghai Bell,
Shanghai, China
-- Participated in the software system design and development for
Industrial-level Telecom Equpment integrated various Internet access services (including
Dial-up, ISDN) and value-added services (including VPDN, callback, AODI) into a robust
platform.
Visual Computing
ViewMorphing: Generate Panoroma from Uncalibrated Cameras
-- The research of visual computing based on projective geometry suggest that we may
recover the partial 3D information from a sequence of photos. I developed programs to
generate panaroma from a pair uncalibrated cameras. |
