Projects

Current Projects

  • CAREER: Synergistic Cross-IoT N-Way Sensing using Wireless Traffic in the Edge.[Project Website]
  • SWIFT: Effective Spectrum Coexistence among Active, Semi-passive, and Passive IoT Devices.[Project Website]

 

Accomplished Research Projects

  • Real-Time Indoor and Outdoor Simultaneous Localization and Mapping.[Project Website]
  • SpecEES: Collaborative Research: A Spectrum-Efficient and Secure Communication Architecture for Smart Cities.[Project Website]

 

Selected Accomplished Research Projects

    • Energy [Energy Sharing & Distribution (eShare)]

      Outdoor Indoor Mobile Phone
      Outdoor Indoor Mobile Phone

      eShare supports the concept of energy sharing among multiple devices by providing designs for energy routers (i.e., energy storage and routing devices) and related energy access and network protocols. In a nutshell, energy routers exchange energy sharing control information using their data network while sharing energy freely among connected devices using their energy network. We extensively evaluate our system under six real-world settings and the result has been reported in ACM SenSys 2010[PDF].
      (Best Paper Award Candidate)

 

    • Systems [Leakage-Aware Sustainable Systems (LASS)]


      Outdoor Indoor Mobile Phone
      Outdoor Indoor Mobile
      Backpack

      Sustainable Systems harvest energy from environments, use ultra-capacitors as the only energy storage units, and aim to guarantee aliveness of devices between two consecutive recharging cycles using leakage-aware feedback control. It supports many long-term applications such as mobile and pervasive computing. The system has been evaluated under three typical real-world settings-outdoor, indoor, and mobile backpack (shown above). It has been reported in ACM MobiSys 2009[PDF].

 

    • Communications & Networking [Collective Flooding (CF)]

      Bridge
      Collective Flooding (CF) exploits the link correlation to achieve flooding reliability using the concept of collective ACK. CF requires only 1-hop information from a sender, making the design highly distributed and scalable with low complexity. It has been evaluated in three different types of testbeds: a single hop network with 20 MICAz nodes, a multi-hop network with 37 nodes, and a linear outdoor network with 48 nodes along a 326-meter-long bridge (shown above). This system has been reported in USENIX NSDI 2010 [PDF].