1 / 10

Part J: Technology

Part J: Technology. Pasi Pekkinen pasi.pekkinen@navinova.com Navinova Oy . Key messages. Standardising positioning technologies and the interchange of data with other systems a great challenge LBS will be a part of personalised services Basic positioning is available: Cell ID

oprah-cline
Download Presentation

Part J: Technology

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. Part J:Technology Pasi Pekkinen pasi.pekkinen@navinova.com Navinova Oy

  2. Key messages • Standardising positioning technologies and the interchange of data with other systems a great challenge • LBS will be a part of personalised services • Basic positioning is available: Cell ID • More accurate methods will be available • require investments in devices and/or networks • Market will be limited until a clear choice

  3. Key messages (2) • Terminal-based solutions more accurate • Devices require modifications • implications on the size, complexity and power consumption • affects on the cost • If positioning solely within device, the role of the operator diminishes

  4. Technological implications • Sharing of information between operators, application and service providers and device vendors poses a major challenge • Different applications have different requirements • commerce transactions must be secure • navigational services near real-time

  5. Terminal-based technologies GPS • Measurement of signal from satellites • minimum 4 satellites need to be visible • Time of arrival of the signal used A-GPS • continuously operating GPS reference network provides assistance in speed and accuracy of first fix • GPS drawbacks • urban canyon effect • requires all handsets to be modified

  6. Terminal-based: E-OTD • Device measures signals from 3 base stations and observes the time difference • Device requires software update • Base stations need to be synchronised or location units need to be installed • Slightly slower response times than Cell ID • Active measurement by the device or base stations transmit their position and timing values by cell broadcast

  7. Network-based (1) • Cell ID • Fallback positioning method: no modifications required • Usually combined with TA  Cell ID+ • Time of Arrival (TOA) • measurement of the propagation time of a signal from device to 3 LMUs • high investment costs

  8. Technology comparison

  9. Standards bodies (1) • GSM Association • 01/2000 document on LBS service requirements • ETSI • ETSI standard GSM 03.71: functional description for location services • UMTS • 3GPP for third generation: Cell ID, GPS, IPDL-OTDOA

  10. Standards bodies (2) • WAP Forum • work underway for standard enabling LBS for WAP • LIF • founded by Ericsson, Motorola and Nokia in 09/2000 • to develop inter-operable LCS solution • generic interface for application developers • Bluetooth • defining local-positioning profile as part of future Bluetooth specification (target 2001)

More Related