Assistant Professor Prabal Dutta, along with co-authors from University of California, Berkeley and Johns Hopkins University, has won the
Best Paper Award at the 8th ACM Conference on Embedded Networked Sensor Systems (SenSys 2010), which took place November 3-5, 2010, in
Zurich, Switzerland. Sensys is the premier conference on wireless, embedded, and networked sensing.
The paper, entitled "Design and Evaluation of a Versatile and Efficient Receiver-Initiated Link Layer for Low-Power Wireless," introduces A-MAC, a receiver-initiated link layer for low-power wireless networks that supports several services under a unified architecture, and does so more efficiently and scalably than prior approaches.
In the paper, the authors detail A-MAC's ability to concurrently support unicast, broadcast, wakeup, and pollcast services. Despite its generality, A-MAC achieves high channel efficiency, is resilient to a wide range of external interference and noise, offers high packet delivery ratios across a wide range of workloads including n-to-1 incast and multiple parallel flows, offers lower power than prior receiver-initiated protocols, and leverages multichannel optimizations. The authors achieve these results using existing radios in novel ways, but note that performance would improve with even a modicum of hardware support.
This work establishes that there is still plenty of room at the MAC layer to improve duty cycles, achieve predictable operation, offer high channel efficiency, and provide better support for bursty workloads. This work paves the way for new research in the design of radio hardware, MAC sublayer primitives, MAC-layer services, and performance studies to assess the utility and performance of this approach for emerging needs.
Prof. Dutta's research interests straddle the hardware/software interface and include
systems, networking, and architecture. Recent focus areas include energy management,
wireless networking, and embedded systems. He is also interested in emerging mobile
sensing, building-scale sensing, and healthcare applications that cut across all of
Posted: November 8, 2010