Greg Greg Burdett Burdett Director, Director, Business Business Development Development Geometrix Geometrix Mobile Mobile Location Location Center Center Greg.Burdett@Andrew.com Greg.Burdett@Andrew.com How to Deploy Location-based Services Now and in the Future
Andrew Corporation is the foremost global supplier of one-stop, end-to-end radio frequency (RF) subsystem solutions.
Mobile Location Geo-Location applications on the mobile network Gateway MLC Internet Serving MLC Mobile Network LCS has turned wireless networks, beyond purely communication networks, into an instrument for locating mobile devices and their users.
1996 Northern Telecom Location Based Services by application There are three principal categories of locationenhanced services: Copyright 1996 Northern Telecom 1. Commercial Enterprise and Consumer Services - Require or are enhanced by knowledge of a mobile s position to answer questions such as "Where's my delivery truck?, "Where's my child?, asset tracking, roadside assistance, driving directions, etc. Copyright 1996 Northern Telecom Copyright 2. Public Safety - Provide the location of wireless callers to emergency service centers such as 112, 911, etc. 3. Security - Locate and track specific individuals or items of interest
Location Technology Characteristics Location Method Typical Accuracy (approx) Yield/ Reliability Scalability Handset Participation Cost Cell ID 1000s Meters No Low Enhanced Cell ID 300m to 1000s Meters No Moderate U-TDOA 50 to 300m Low No A-GPS 10 to 50m Moderate Yes Moderate Hybrid A-GPS 10 to 100 s Meters Yes Moderate
Location Solutions in a 3GPP/OMA Context HLR Lh Lc GMLC GMLC / / SLP SLP E2 (ESP) ALI SCF Lg Core Le (MLP) SMLC SMLC Ls MSC SGSN MSC Applications and Emergency Lup User Plane Lbis UTDOA UTDOA server server Lb LMU LMU LMU A BSC Abis BTS Gb GERAN Iu UTRAN Iu RNC Iub Node B LMU LMU LMU Iupc Stand Stand Alone Alone SMLC SMLC UTDOA UTDOA server server
SMLC : Cell and Enhanced Cell Positioning Sector Information Sector Information Legacy Handset Serving Base Station (Cell Identity) Serving Sector Information Timing Advance Legacy Handset Serving Base Station (Cell Identity) RXLEV s RXLEV 1 Neighbor Base Station RXLEV 1 2 Legacy Handset Timing Advance Serving Base Station Neighbor Base Station 2
SMLC : A-GPS Functionality Periodic request for GPS assistance data for defined grids Reference Server* WARN Location Server SS7A PerformLocationRequest PerformLocationResponse RRLP-MeasurePosition + GPS assistance data RRLP- Position Info MSC BSC/RNC GPS Data Collector SMLC A-GPS PCF Cell & Grid Data BTS Lat/Lon Grid extent and element size Cell & Grid Database
Secure User Plane Location Assumes measurements come from device (SET) Bypasses signaling control plane to communicate with SET SUPL session occurs over IP on user plane Network-initiated requests stimulated by SMS or WAP data push Device provides serving Cell-ID in start message SLP needs cell database to, e.g., generate suitable GPS assistance data Lead SUPL application is for A-GPS used for LBS purposes SET* MLS Application/ SUPL Agent Llp * SET SUPL Enabled Terminal
Focus on: Hybrid A-GPS Periodic request for GPS assistance data for defined grids WARN* Network Measurement Requests Network Measurements GPS Data Collector MeasurePositionRequest + GPS acquisition assistance data GPS + Network Measurements SMLC Hybrid A-GPS Positioning Function Cell & Grid Data BTS Lat/Lon Grid extent and element size Cell & Grid Database * Wide Area Reference Network (WARN) of fixed GPS receivers used to determine assistance data for the area of coverage. Hybrid AGPS combines GPS measurements with other range measurements Range measurements obtained from network e.g. Timing advance, Round trip time, Uplink time difference of arrival measurements, etc. Handset measurements, other than GPS, also used e.g. Downlink time of arrival measurements Use assumed altitude for Cell sites. Yield improvements are the primary benefit in environments of poor GPS acquisition (eg indoor, dense urban, etc)
What will the future bring? The rise of IP, VoIP, IMS and network convergence Multi-access IP location architecture - Need to locate subscribers beyond 3GPP/2 access - WiFi / WiMAX Access Cell-id : Similar to GSM/UMTS, a Cell-id based location can be determined Network-based measurements : Use of WiMAX network information to determine a more accurate location than Cell-id. A-GPS : Use SUPL to locate A-GPS enabled WiFi/WiMAX devices - Fixed Access Locating subscribers on DSL, Cable or within Enterprises IP Location Applications - VoIP 911 - Converged Location Based Services, including IMS - Security applications
A lead application emergency services for VoIP NENA defined (i2) migratory architecture Emergency network Call Handling 911 Call Call Server Server IP ESGW ESGW call ISUP Selective Selective Router Router CAMA Location Server Server VoIP VoIP Positioning Center Center locn E2+ ALI Local PAM Geodetic & Civil loc,n Global ESZ boundary data ALI National ERDB Civic addr MSAG validation VDB
Summarizing the future More of the same evolving approaches to location measurement and determination Location technologies for WiMAX, WiFi, DSL, Cable,.. More architectures pulling things together under the forces of convergence (VoIP 911, IMS, etc) Cell and Rx level info Location technology today is diverse, complex, and powerful RF survey DB Radio Camera The future even more so. Andrew Corporation will be there!
Andrew s location technology products Geometrix MLC User Plane and Control Plane Solutions - SMLC, GMLC, SAS, and SUPL Location Platform - SLP Provides Any Location Technology - CID, E-CID, U-TDOA, A-GPS, Hybrid A-GPS Vendor-Preferred, Operator-Preferred
Thank you Copyright 1996 Northern Telecom
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