Fortunately, Georgia Tech College of Computing researchers have developed a possible solution. It’s an innovative wireless system called LifeNet designed to help first responders communicate after disasters. LifeNet is a mobile ad-hoc network designed for use in highly transient environments that requires no infrastructure such as Internet, cell towers or traditional landlines.
“It’s an independent network you can join,” said Santosh Vempala, Georgia Tech distinguished professor of computer science in the College of Computing.
“It doesn’t need wires, antennas, cell towers and so on, and it works across platforms like laptops and smart phones. We imagine relief agencies would be able to set up a network right away and communicate about what’s needed.”
Vempala and his graduate student, Hrushikesh Mehendale, will demonstrate the LifeNet system at the ACM SIGCOM conference from 3:30 p.m. to 6 p.m. today in Toronto, Canada.
The standard for post-disaster communications is the satellite phone, which, at $600 or more per unit, can be expensive to own and, at 50 cents per text, costly to use.
LifeNet, however, bridges connectivity between a satellite phone or other Internet gateway and a WiFi-based network on the ground. It extends the coverage of a satellite phone or a service such as SMS from one computer with access to the entire independent network in the field. Essentially, that means several people in the field who may not have satellite phones but have smart phones or laptops with WiFi capability can connect to the LifeNet network, communicate with each other with no other infrastructure and use the Internet as long as any one of them has access.
“Currently available options such as satellite communication are expensive and have limited functionality,” Mehendale said. “If you use LifeNet, the cost savings per text message is 100 times less than a satellite phone.”
LifeNet is also easy to set up. The network starts as soon as a node is put in place. Each LifeNet-enabled computer acts as both a host client and a router, able to directly route data to and from any other available wireless device. Nodes can be moved from location to location as needed, and the network remains intact.
The software developed by Vempala and Mehendale for LifeNet provides basic communications that are low bandwidth and reliable. It doesn’t allow users to stream video, for example, but it can send text messages for basic communication needs.
“It’s a trade-off of performance for reliability,” Vempala said. “Reliability is really what you need the most in these situations.”
During the demo at SIGCOMM, conference attendees will be able to see the Atlanta-based LifeNet network via a web-based interface in Toronto. They will be able to log into the network, send messages, move nodes and see how communication is affected.
Georgia Tech researchers are currently ready to deploy LifeNet for field testing and are looking to expand beyond crisis communications.
Vempala’s team recently partnered with Tata Institute of Social Sciences India, which has a disaster management center. Together, the researchers identified cyclone-affected areas without communications infrastructure that could benefit most from LifeNet. As a result, researchers will be deploying LifeNet in the Mohali region of India over the next several months.
“In an area without any other connectivity, we will establish a set up that could be used daily and could also be specifically helpful during a disaster,” Mehendale said. “We need to make the solution a part of their daily lives since people cannot afford costly equipment like satellite phones in third-world regions.”
The researchers also hope to pitch LifeNet as a package to FEMA, the Red Cross and other U.S. relief agencies soon.
“There are many recent situations, like the Mississippi floods this summer, where this would have been valuable,” Vempala said. “People were trapped. Cell phones were not working, the Internet is down and people don’t have a way to communicate. . . . LifeNet can be the solution.”
Liz Klipp | Newswise Science News
Cutting edge research for the industries of tomorrow – DFKI and NICT expand cooperation
21.03.2017 | Deutsches Forschungszentrum für Künstliche Intelligenz GmbH, DFKI
Molecular motor-powered biocomputers
20.03.2017 | Technische Universität Dresden
Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.
The results will be published on March 22 in the journal „Astronomy & Astrophysics“.
Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...
Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.
Ubiquitin is a small protein that can be linked to other cellular proteins, thereby controlling and modulating their functions. The attachment occurs in many...
In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...
Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to simulate these confined natural conditions in artificial vesicles for the first time. As reported in the academic journal Small, the results are offering better insight into the development of nanoreactors and artificial organelles.
Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to...
20.03.2017 | Event News
14.03.2017 | Event News
07.03.2017 | Event News
24.03.2017 | Materials Sciences
24.03.2017 | Physics and Astronomy
24.03.2017 | Physics and Astronomy