Our Vision:

In Project MANTIS, we are building hardware, software, tools, networking protocols and security algorithms to assist in creating next-generation wireless sensor networks (WSNs).  We are working towards a unified framework where well-designed WSNs seamlessly connect into a context-aware smart space.  Today, we already see a proliferation of sensors that track motion, temperature, sound, light/vision, humidity, and a host of other activities.  These sensors are rapidly becoming embedded into everyday spaces such as the home, office, and public spaces.  [I am offering a graduate seminar on sensor networks in Fall 2003].

Our Research: 

• MANTIS Embedded OS and Hardware Systems:
  • H. Abrach, S. Bhatti, J. Carlson, H. Dai, J. Rose, A. Sheth, B. Shucker, J. Deng, R. Han, "MANTIS: System Support for MultimodAl NeTworks of In-situ Sensors", 2nd ACM International Workshop on Wireless Sensor Networks and Applications (WSNA) 2003, pp. 50-59.
  • Earlier version: H. Abrach, J. Carlson, H. Dai, J. Rose, A. Sheth, B. Shucker, R. Han, "MANTIS: System Support For MultimodAl NeTworks of In-situ Sensors", Technical Report CU-CS-950-03, Department of Computer Science, University of Colorado, April 2003.
• Secure sensor networks
  • J. Deng, R. Han, S. Mishra, "Security Support for In-Network Processing in Wireless Sensor Networks", First ACM Workshop on the Security of Ad Hoc and Sensor Networks (SASN) 2003, held in conjunction with the ACM Conference on Computer and Communication Security (CCS).  (to appear)
  • M. Gruteser, G. Schelle, A. Jain, R. Han, D. Grunwald, "Privacy-Aware Location Sensor Networks", USENIX 9th Workshop on Hot Topics in Operating Systems (HOTOS IX) 2003, pp. 163-167.
  • J. Deng, R. Han, S. Mishra, "A Performance Evaluation of Intrusion-Tolerant Routing in Wireless Sensor Networks," IEEE 2nd International Workshop on Information Processing in Sensor Networks (IPSN '03), 2003, Palo Alto, California, pp. 349-364.
  • Earlier version: J. Deng, R. Han, S. Mishra, "INSENS: INtrusion-tolerant routing in wireless SEnsor NetworkS,"  Technical Report CU-CS-939-02, Department of Computer Science, University of Colorado, November 2002.
  • J. Deng, R. Han, S. Mishra, "Enhancing Base Station Security in Wireless Sensor Networks", Technical Report CU-CS-951-03, Department of Computer Science, University of Colorado, April 2003.
• Sensor-enabled user interfaces
  • J. Carlson, R. Han, S. Lao, C. Narayan,  S. Sanghani, "Rapid Prototyping Of Mobile Input Devices Using Wireless Sensor Nodes", 5th IEEE Workshop On Mobile Computing Systems and Applications (WMCSA) 2003, pp. 21-29.
• Communication protocols for wireless sensor networks
  • Low-complexity multicast for WSNs
    • A. Sheth, B. Shucker, R. Han, "VLM²: A Very Lightweight Mobile Multicast System for Wireless Sensor Networks", IEEE Wireless Communications and Networking Conference (WCNC) 2003, pp. 1936-1941.
  • Load balancing in WSNs
    • H. Dai, R. Han, "A Node-Centric Load Balancing Algorithm For Wireless Sensor Networks", IEEE GLOBECOM - Wireless Communications, 2003 (to appear).
• Time synchronization and/or calibration for sensor networks
  • H. Dai, R. Han, "“TSync : A Lightweight Bidirectional Time Synchronization Service for Wireless Sensor Networks”, to appear in Mobile Computing and Communications Review.

• Low power wireless networking
  • Adaptive transmit power control for 802.11b.  We are working on extending these concepts to WSNs.
    • A. Sheth, R. Han, "Adaptive Power Control and Selective Radio Activation For Low-Power Infrastructure-Mode 802.11 LANs",  IEEE Workshop on Mobile and Wireless Networks (MWN), 2003, pp. 812-818.  Held in conjunction with ICDCS 2003.
• Location-aware sensor networking and localization
  • Location determination using 802.11b.  We are working on extending these algorithms into WSNs.

One team of students is working on each of these problems.  As time permits, we will provide updates here.