Greg
GregBurdett
Burdett
Director,
Director,Business
BusinessDevelopment
Development
Geometrix
GeometrixMobile
MobileLocation
LocationCenter
Center
[email protected]
[email protected]
How to Deploy Location-based
Services Now and in the Future
© ANDREW CORPORATION 4/07
Andrew Corporation is the foremost
global supplier of one-stop, end-to-end
radio frequency (RF) subsystem
solutions.
© ANDREW CORPORATION 4/07
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.
© ANDREW CORPORATION 4/07
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 ©
1996
Norther n
T elec om
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
© ANDREW CORPORATION 4/07
Location Technology Characteristics
Typical Accuracy
(approx)
Yield/
Reliability
Scalability
Handset
Participation
Cost
Cell ID
1000s Meters
High
High
No
Low
Enhanced
Cell ID
300m to 1000s
Meters
High
High
No
Moderate
U-TDOA
50 to 300m
High
Low
No
High
A-GPS
10 to 50m
Moderate
High
Yes
Moderate
Hybrid
10 to 100’s
A-GPS
Meters
High
High
Yes
Moderate
Location
Method
© ANDREW CORPORATION 4/07
Location Solutions in a 3GPP/OMA Context
Lh
HLR
ALI
GMLC
GMLC/ /
SLP
SLP
Lc
SCF
E2 (ESP)
Lg
Core
Le (MLP)
SMLC
SMLC
Lup
Ls
Lb
SGSN
MSC
A
Gb
Applications
and
Emergency
MSC
Iu
Iu
Lbis
BSC
User
Plane
UTDOA
UTDOA
server
server
Abis
BTS
LMU
LMU
LMU
Iupc
RNC
GERAN UTRAN
Iub
Stand
Stand
Alone
Alone
SMLC
SMLC
UTDOA
UTDOA
server
server
Node B
LMU
LMU
LMU
© ANDREW CORPORATION 4/07
SMLC : Cell and Enhanced Cell Positioning
Sector
Information
Sector
Information
Legacy
Handset
Serving Base
Station
(Cell Identity)
Legacy
Handset
Serving Sector
Information
Timing
Advance
Serving Base
Station
(Cell Identity)
RXLEVs
RXLEV1
Neighbor
Base Station
1
RXLEV2
Timing
Advance
Legacy
Handset
Serving
Base
Station
Neighbor
Base Station
2
© ANDREW CORPORATION 4/07
SMLC : A-GPS Functionality
Reference
Server*
WARN
Location
Server
PerformLocationResponse
SS7A
RRLP-MeasurePosition +
GPS assistance data
RRLP- Position Info
MSC
PerformLocationRequest
BSC/RNC
Periodic request for GPS
assistance data for defined grids
GPS Data
Collector
A-GPS
PCF
SMLC
Cell & Grid Data
• BTS Lat/Lon
• Grid extent and
element size
Cell & Grid
Database
© ANDREW CORPORATION 4/07
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
© ANDREW CORPORATION 4/07
Focus on:
Hybrid A-GPS
Periodic request for GPS
assistance data for defined
grids
WARN*
Network Measurement
Requests
Network Measurements
MeasurePositionRequest + GPS
acquisition assistance data
GPS Data
Collector
GPS + Network Measurements
Hybrid A-GPS
Positioning Function
SMLC
•
•
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)
© ANDREW CORPORATION 4/07
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
© ANDREW CORPORATION 4/07
A lead application – emergency services for VoIP
NENA defined (i2) migratory architecture
Emergency network
Call Handling
911
Call
Call
Server
Server
Location
Location
Server
Server
Geodetic &
Civil loc,n
ESGW
ESGW
VoIP
VoIP
Positioning
Positioning
Center
Center
Selective
Selective
Router
Router
ISUP
IP
call
ALI
locn
E2+
Civic addr
MSAG validation
PAM
Local
ALI
Global ESZ
boundary data
CAMA
ERDB
National
VDB
© ANDREW CORPORATION 4/07
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)
Location technology
today is diverse,
complex, and powerful
Cell and Rx
level info
RF survey DB
Radio Camera
The future even more so.
Andrew Corporation
will be there!
© ANDREW CORPORATION 4/07
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
© ANDREW CORPORATION 4/07
Thank you
Copyright © 1996 Northern Telecom
© ANDREW CORPORATION 4/07
ANDREW CORPORATION
One Company. A World of Solutions.
© ANDREW CORPORATION 4/07