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

nachricht Tile Based DASH Streaming for Virtual Reality with HEVC from Fraunhofer HHI
03.01.2017 | Fraunhofer-Institut für Nachrichtentechnik Heinrich-Hertz-Institut

All articles from Communications Media >>>

The most recent press releases about innovation >>>

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

Im Focus: Breakthrough with a chain of gold atoms

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

Im Focus: DNA repair: a new letter in the cell alphabet

Results reveal how discoveries may be hidden in scientific “blind spots”

Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...

Im Focus: Dresdner scientists print tomorrow’s world

The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.

The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...

Im Focus: Mimicking nature's cellular architectures via 3-D printing

Research offers new level of control over the structure of 3-D printed materials

Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...

Im Focus: Three Magnetic States for Each Hole

Nanometer-scale magnetic perforated grids could create new possibilities for computing. Together with international colleagues, scientists from the Helmholtz Zentrum Dresden-Rossendorf (HZDR) have shown how a cobalt grid can be reliably programmed at room temperature. In addition they discovered that for every hole ("antidot") three magnetic states can be configured. The results have been published in the journal "Scientific Reports".

Physicist Dr. Rantej Bali from the HZDR, together with scientists from Singapore and Australia, designed a special grid structure in a thin layer of cobalt in...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Booth and panel discussion – The Lindau Nobel Laureate Meetings at the AAAS 2017 Annual Meeting

13.02.2017 | Event News

Complex Loading versus Hidden Reserves

10.02.2017 | Event News

International Conference on Crystal Growth in Freiburg

09.02.2017 | Event News

 
Latest News

From rocks in Colorado, evidence of a 'chaotic solar system'

23.02.2017 | Physics and Astronomy

'Quartz' crystals at the Earth's core power its magnetic field

23.02.2017 | Earth Sciences

Antimicrobial substances identified in Komodo dragon blood

23.02.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>