Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Location-based services for teenagers

22.01.2002


Mobile phones can do more than communicate voice and data. The ability to determine the physical location of a mobile phone enables a broad range of mobile services to be offered, including location tracking of users, customised local service information and navigation. A recent EURESCOM study explored the communication needs of teenagers, how they could be met by location-based services, and which location technology is best suited.



In the EURESCOM study WOMBAT (Where are the Other Mobile Buddies Around Town?) researchers from major European telecoms companies developed real-life user scenarios for teenagers to see how well the different location-based technologies could serve young people’s needs.

EURESCOM project supervisor Uwe Herzog, who is responsible for the study, gives a concrete example: "Imagine a group of teenagers who arranged to meet in town before going to a concert. One is already there and wants to know if he has enough time to do some shopping before his friends arrive. He checks his mobile device to see where they are and realises that one is passing a nearby shop. So he decides to wait for the close-by friend before going to the shop.“


The researchers identified among others, three major communication needs: to know where their peers are, to let their peers or their parents know where they are and to arrange and rearrange schedules for social events at short notice.

To make this work several requirements must be fulfilled:
- The accuracy should be better than 20 meters, both inside and outside buildings, in urban and in rural areas,
- the location information has to be up-to-date and
- more than one person at a time can be located.
After defining the needs and requirements the EURESCOM researchers compared location-based technologies to find out which suits the purpose best.

Four technologies were taken into account:

1. The Cell of Origin (COO) and the

2. Time of Arrival (TOA) are both network-based technologies, which do not require phone modifications and are not user-controlled. The first pinpoints the cell around a base station in which a mobile phone is located, with an accuracy of 150 m to 30 km depending on the cell size. The second method measures the time it takes the radio signal to reach at least three base stations from the mobile phone, localising it with an accuracy of 50 m to 200 m.

The two other methods are hybrids between phone-based and network-based technologies, thus improving user control.

3. The Enhanced Observed Time Difference (E-OTD) is based on the time measurement for signals from at least three mobile network antennas to the mobile phone and allows the phone to be located within 50 m to 125 m.

4. The Assisted Global Positioning System (A-GPS) is based on a combination of the mobile network and the satellite positioning system GPS, which is also used in the automotive sector. A-GPS allows the highest accuracy of 5 m to 100 m, but indoor operation can not be guaranteed.

The research concluded that, while the accuracy requirements they identified could be completely covered by existing technologies, it is feasible to introduce these location-based services for teenagers that either use the E-OTD method or the TOA technology today.

Uwe Herzog is convinced the introduction of UMTS will make location-based services even more attractive. He explains that “Multimedia information via UMTS, for instance, will increase the usability of navigation services”. But there are still a lot of technological and security issues to solve, he says: “We have to ensure a high accuracy in locating people, but at the same time they must be given the opportunity to choose who is allowed to track them.”

Milon Gupta | alphagalileo
Further information:
http://www.eurescom.de/public/projects/P1000-series/p1045/

More articles from Communications Media:

nachricht New Technologies for A/V Analysis and Search
13.04.2017 | Fraunhofer-Institut für Digitale Medientechnologie IDMT

nachricht On patrol in social networks
25.01.2017 | Fraunhofer-Institut für Arbeitswirtschaft und Organisation IAO

All articles from Communications Media >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Can we see monkeys from space? Emerging technologies to map biodiversity

An international team of scientists has proposed a new multi-disciplinary approach in which an array of new technologies will allow us to map biodiversity and the risks that wildlife is facing at the scale of whole landscapes. The findings are published in Nature Ecology and Evolution. This international research is led by the Kunming Institute of Zoology from China, University of East Anglia, University of Leicester and the Leibniz Institute for Zoo and Wildlife Research.

Using a combination of satellite and ground data, the team proposes that it is now possible to map biodiversity with an accuracy that has not been previously...

Im Focus: Climate satellite: Tracking methane with robust laser technology

Heatwaves in the Arctic, longer periods of vegetation in Europe, severe floods in West Africa – starting in 2021, scientists want to explore the emissions of the greenhouse gas methane with the German-French satellite MERLIN. This is made possible by a new robust laser system of the Fraunhofer Institute for Laser Technology ILT in Aachen, which achieves unprecedented measurement accuracy.

Methane is primarily the result of the decomposition of organic matter. The gas has a 25 times greater warming potential than carbon dioxide, but is not as...

Im Focus: How protons move through a fuel cell

Hydrogen is regarded as the energy source of the future: It is produced with solar power and can be used to generate heat and electricity in fuel cells. Empa researchers have now succeeded in decoding the movement of hydrogen ions in crystals – a key step towards more efficient energy conversion in the hydrogen industry of tomorrow.

As charge carriers, electrons and ions play the leading role in electrochemical energy storage devices and converters such as batteries and fuel cells. Proton...

Im Focus: A unique data centre for cosmological simulations

Scientists from the Excellence Cluster Universe at the Ludwig-Maximilians-Universität Munich have establised "Cosmowebportal", a unique data centre for cosmological simulations located at the Leibniz Supercomputing Centre (LRZ) of the Bavarian Academy of Sciences. The complete results of a series of large hydrodynamical cosmological simulations are available, with data volumes typically exceeding several hundred terabytes. Scientists worldwide can interactively explore these complex simulations via a web interface and directly access the results.

With current telescopes, scientists can observe our Universe’s galaxies and galaxy clusters and their distribution along an invisible cosmic web. From the...

Im Focus: Scientists develop molecular thermometer for contactless measurement using infrared light

Temperature measurements possible even on the smallest scale / Molecular ruby for use in material sciences, biology, and medicine

Chemists at Johannes Gutenberg University Mainz (JGU) in cooperation with researchers of the German Federal Institute for Materials Research and Testing (BAM)...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Plants are networkers

19.06.2017 | Event News

Digital Survival Training for Executives

13.06.2017 | Event News

Global Learning Council Summit 2017

13.06.2017 | Event News

 
Latest News

Touch Displays WAY-AX and WAY-DX by WayCon

27.06.2017 | Power and Electrical Engineering

Drones that drive

27.06.2017 | Information Technology

Ultra-compact phase modulators based on graphene plasmons

27.06.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>