Archive for the ‘wsn-papers’ Category
We are happy to announce the open-source release of the Low-power Wireless Bus (LWB), a communication protocol for low-power wireless embedded systems. By mapping all communication onto network-wide Glossy floods, LWB lets low-power wireless nodes communicate as if they were connected to a shared bus, thus hiding the complexity of the underlying multi-hop topology from upper layers.
You may find the LWB and Glossy code on https://github.com/ETHZ-TEC/LWB including instructions on running an LWB demo application. We also outline the current code status and layout and provide references for further reading.
The system includes a revised implementation of LWB as described in the original SenSys’12 paper, based on a minimal subset of Contiki. While LWB itself is mostly platform-independent, the underlying Glossy code is platform-specific. There is a new port of Glossy for the CC430 SoC platform, which features an 868/915 MHz radio and an MSP430 microcontroller on one chip. In the future, we intend to incorporate also the first Glossy port for the TelosB platform. In the meantime, you may find this port at http://sourceforge.net/p/contikiprojects/code/HEAD/tree/ethz.ch/glossy/
We would like to invite the community to check out the code and to get in touch with us if you have comments, suggestions, bug reports, or would like to get involved and submit your code contributions to LWB and Glossy. We particularly welcome the contribution of Glossy ports to other state-of-the-art platforms.
The SenSys 2014 Doctoral Colloquium seeks to provide a friendly, supportive, and constructive environment where PhD students can present their research in progress for an open discussion guided by a panel of experienced researchers and practitioners.
The DC will be structured as a series of short presentations by the students followed by individual discussions, feedback, and advise. The student presentations will be interleaved with speeches by leading researchers, who will provide their own perspectives on current and future research trends in networked sensing, as well as on how to best purse a Ph.D. in this field. Participating students will also have the opportunity to present a poster during the main conference to leverage further interaction with SENSYS attendees.
Submission deadline: September 2nd, 2014
Notification of acceptance: September 15th, 2014
Ph.D. Forum: November 6th, 2014
OSDI 2012 has an interesting paper on the evolution of TinyOS over the past 10+ years. It looks at both technical and social decisions that contributed to the success of TinyOS. The paper also looks back and evaluates what worked, what didn’t, and why. It’s rare to see papers at technical conferences talking about the non-technical aspects of large software development projects, so should be an interesting read. You can find the paper here.
Multi-hop wireless networks can provide data access for large and unconventional spaces, but they have long faced significant limits on the amount of data they can transmit. Now researchers from North Carolina State University have developed a more efficient data transmission approach that can boost the amount of data the networks can transmit by 20 to 80 percent.
“Our approach increases the average amount of data that can be transmitted within the network by at least 20 percent for networks with randomly placed nodes – and up to 80 percent if the nodes are positioned in clusters within the network,” says Dr. Rudra Dutta, an associate professor of computer science at NC State and co-author of a paper on the research. The approach also makes the network more energy efficient, which can extend the lifetime of the network if the nodes are battery-powered.
Multi-hop wireless networks utilize multiple wireless nodes to provide coverage to a large area by forwarding and receiving data wirelessly between the nodes. However, these networks have “hot spots” – places in the network where multiple wireless transmissions can interfere with each other. This limits how quickly the network can transfer data, because the nodes have to take turns transmitting data at these congested points.
Data can be transmitted at low power over short distances, which limits the degree of interference with other nodes. But this approach means that the data may have to be transmitted through many nodes before reaching its final destination. Or, data can be transmitted at high power, which means the data can be sent further and more quickly – but the powerful transmission may interfere with transmissions from many other nodes.
Dutta and Ph.D. student Parth Pathak developed an approach called centrality-based power control to address the problem. Their approach uses an algorithm that instructs each node in the network on how much power to use for each transmission depending on its final destination.
The algorithm optimizes system efficiency by determining when a powerful transmission is worth the added signal disruption, and when less powerful transmissions are needed.
The paper, “Centrality-based power control for hot-spot mitigation in multi-hop wireless networks,” is published online by the journalComputer Communications, and is in press for a print version of an upcoming issue of the journal. Pathak is lead author. The research was supported in part by the U.S. Army Research Office.
The CPS Week 2012 (Cyber-Physical Systems Week) in Beijing will include a workshop and tutorial day on April 16, 2012. Each workshop will provide an arena for presentations and discussions about a special topic of relevance to CPS Week. Each tutorial will present in-depth content in a mini-course format aimed primarily at students, researchers, or attendees from industry.
Proposals: If you are interested in organising a workshop or a tutorial at CPS Week 2012, please send a proposal (maximum 2-page PDF file) containing information about the following:
* Workshop or tutorial title,
* Abstract (maximum 200 words),
* The topic of the workshop/tutorial and how it relates to CPS Week,
* The organisers behind the workshop/tutorial including contact information, and short bio and affiliation,
* Proposed Program Committee,
* Planned review procedures,
* In the case of a workshop what the intended format will be (invited presentations, submitted presentations, panels, etc),
* Expected sponsorships (if any),
* Profile of a typical attendee (academic researcher, student or industry participant),
* A rough estimate of the number of participants,
* In case the workshop/tutorial has been previously held, provide information on the conference, date, and number of attendees.
Please send the proposal to the CPSWeek 2012 workshop and tutorial chair, Thiemo Voigt, [thiemo AT-symbol sics.se] – with subject “[CPSWEEK 2012] Workshop and Tutorial Proposal”.
Registration to workshops will be handled in connection with registration to the conference part of CPS Week. The CPS Week 2012 reserves the right to cancel non-viable workshops/tutorials.
* October 30, 2011: Submission of workshop and tutorial proposals
* November 10, 2011: Notification of acceptance
* April 16, 2012: Workshop and Tutorial day
3rd ACM Workshop On Embedded Sensing
Systems For Energy-Efficiency In Buildings
Seattle, WA, USA
November 1, 2011
Co-located with ACM SenSys 2011
The World is increasingly experiencing a strong need for energy consumption reduction and a need for efficient use of scarce natural resources. Official studies report that buildings account for the largest portion of World’s energy expenditure and have the fastest growth rate. Wireless sensor networks (WSNs) play a key role in enabling energy-saving systems in buildings and surrounding spaces by providing a reliable, cost-effective and extensible solution that can be placed in existing as well as new structures and can be controlled via the Internet.
* Paper submission deadline: July 30, 2011
* Notification of acceptance: August 31, 2011
* Camera Ready Due: September 15, 2011
* Workshop date: November 1, 2011
*** New this year: Demo session! ***
We solicit both papers AND demos that focus on new techniques and technologies capable of improving the global energy efficiency of buildings leveraging connected sensing systems, networks, and devices. Technical papers will be presented on November 1, 2011, and the demo session will be co-located with ACM SenSys on November 3, 2011.
For more info, go to the workshop webpage