1 / 11

Mapping the GSM landscape

Mapping the GSM landscape. SVG Open 2005. Goal. Location determination Best effort Automatic Take whatever is available: GPS Accurate, but requires hardware and has limited battery life Wifi / Bluetooth Cheap, but ad hoc

devin
Download Presentation

Mapping the GSM landscape

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Mapping the GSM landscape SVG Open 2005

  2. Goal • Location determination • Best effort • Automatic • Take whatever is available: • GPSAccurate, but requires hardware and has limited battery life • Wifi / BluetoothCheap, but ad hoc • Mobile networks (operator based)No extra hardware, but operator dependency and expensive • Mobile networks (central registry)Operator independent and cheap, but limited coverage.

  3. Cell-id database • Central data source with cell information • Converts cell-id into location • Based on multiple measurements • All automatic GPS measurements • Free to use, but expect new cells in return • User is also contributor • Easy access via web services • Focus area: western Europe • Alternatives: • cellspotting.com • placelab.org

  4. July 2005 statistics • 10389 cells of • 35 operators, • 264051 measurements in • 14 countries, • 57 provinces, and • 229 postal code regions • And growing every day…

  5. Possible applications • The well-known Friend Finder • Add location information to instant messaging • Like MSN adds the now-playing-track from MediaPlayer to the contact/buddy details • Speech recognition of street and city names • Limit the degrees of freedom in the solution space • Voice gateway • Call a fixed number to get information about items in your vicinity (attractions, ATMs, toilets, history,…) • Bad connection marker • Predict bandwidth drops in advance for streaming application

  6. Searching for a new home • With one click an overview of all homes in the vicinity • Without GPS but based on GSM cell location • Integrated with Funda.nl

  7. Where are my friends and colleagues? • Exchange context information with relations • Reason with context information • Frequently visited places • Predict destination • Business travelling • In a meeting • In or out the office Demo!

  8. An impression…

  9. If you want to use the cell-id database An easy 4-step process: • Get an impression of what is there:http://www.lab.telin.nl/~koolwaaij/showcase/gsmcells • Sign a license and get the credentials from:koolwaaij@telin.nl • Access the webservice to convert cell-id into lat-long:http://client140.lab.telin.nl:8080/wasp/services/CellStoreService?wsdl • Generate the client stubs and use them in your application, use standard HTTP authentication

  10. Code sample in C# • Create a new project • Add a web reference to the cell store service • Call the web service:CellStoreService myService = new CellStoreService(); myService.Url = "http://server.nl/service";myService.listCells(204,8,false); • Returns a CellData[] with all cells for operator 8 (KPN) in country 204 (The Netherlands). It is as easy as that!

  11. Thank you! http://www.telin.nl Johan Koolwaaij koolwaaij@telin.nl August 2005

More Related