Transcript GSC-13 Draft Presentation Template

DOCUMENT #:
GSC13-GRSC6-20r1
FOR:
Presentation
SOURCE:
ATIS
AGENDA ITEM:
GRSC; Location Services; 4.1
CONTACT(S):
Don Zelmer ([email protected])
ATIS Wireless Location Services
(LS) Update
Submission Date:
July 16, 2008
Highlight of Current Activities (1)
• Communication User Location Services
– Most Needed and Wanted Services
• Public Safety
– Mobile Emergency Call Location (E-911 & E-112)
– Law Enforcement
• Other Services
– Navigation, Routing, and Direction of Movement
– Asset tracking/telemetry
– Billing based on location
– Alerts based on location (ex: Road Congestion Alerts)
– Tracking (ex: children)
– Social Networking
– Any other Service that is currently undefined or has not been thought
about or is currently not considered a viable business
– Privacy issues are non-trivial
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Highlight of Current Activities (2)
• A new SIM card was introduced in February 2008 which has
an embedded AGPS receiver
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Generally works with legacy phones without any modifications
Apparently complies with 3GPP & OMA Specifications
Supports, to some degree, backward compatible with legacy UE’s
Supports LBS on SIM for most wireless UE and Network applications
• EU - Galileo GPS Satellite System will be operational by 2013
– Approved in November 2007 by 27 EU members
– Will increase the TTFF when used in combination with US based
GPS system
• Current Wireless location topics being developed by the
industry:
– Home Node B
– VoIP
– Data
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Strategic Direction
• As time goes on, Location Services will become more
important for all users of wireless communications
• Technology is generally moving forward; however, location
accuracy requirements are becoming tougher to achieve
• Altitude will become more important
• Combinations of technologies that cover in-building, rural,
and urban canyon applications will become more important
• Tremendous resources are currently, and will in the future be
required to achieve better accuracy based on regulatory
requirements
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Challenges
• Continue to develop Location Services that achieve both
better accuracy along with reasonable complexity in
hardware, software, transport, and I/O of the devices that
does not severely impact capacity and complexity in the
wireless network.
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Next Steps/Actions
• Continue to work with the regulatory bodies that mandate
accuracy requirements
• Work to achieve robust specifications/standards for
implementations that will handle the anticipated increase in
demand for Location Services
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Proposed Resolution
• N/A
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Supplemental Slides
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Location Services (Wireless) Definitions
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API = Application Programming Interface
ESIF=Emergency Services Industry Forum
Galileo – European GPS System
GPS = Global Positioning System
IETF = Internet Engineering Task Force
LCS/LBS = Location Based Services
MAGIC = Mobile/Automotive Geo-Information Services Core (ETSI based)
NENA = National Emergency Number Association (US based)
NRIC7 = Network Reliability & Interoperability Council 7
OMA = Open Mobile Alliance
PS = Packet Switched
PSAP = Public Service Answering Points
RRLP = Radio Resource LCS (Location Services) Protocol
SIM = Subscriber Identity Module
SIP = Session Initiated Protocol
STK = SIM Tool Kit
TIA = Telecommuni9cations Industry Association
TTFF = Time to First Fix
UE = User Equipment
VoIP = Voice over Internet Protocol
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Location Services
(Wireless) Network Based
• Cell ID (CID)
– Network Based Solution-commonly used today
– Roaming is supported
– Accuracy dependent on density of cells
– Lowest complexity
• Enhanced Cell ID (E-CID)
– CID including Timing Advance & Network Management
Records
– Roaming is supported
– Accuracy dependent on density of cells
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Location Services (Wireless) (1/2)
UE and Network Based
• E-OTD*, O-TDOA, U-TDOA**
– Triangulation is used to calculate position
– Accuracy varies with density of cells
– Solutions that contain a bit more complexity
– Roaming is not universally supported
*Note: E-OTD is both Network and UE based
**Note: U-TDOA-Initially implemented in North America for
GSM
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Location Services (Wireless) (2/2)
UE and Network Based
• AFLT: (See Note 1 below)
– Based on the correlation of Test Drive RF Measurements
up-loaded into the network and UE real-time, Base
Station RF measurements, reported up to the network.
– Commonly used to complement A-GPS UE’s in Urban
canyon and in-building applications. Some call this a
hybrid approach
Note 1:
Advanced Forward Link Trilateration (AFLT). A handset-based position location
technology that doesn’t use A-GPS for location updates. The phone takes
measurements of RF signals from the closer base stations and reports the timing
(distance) readings up to the network which then calculates/correlates and
reports the approximate location of the handset. Currently, a minimum of three
surrounding base stations are required to get an optimal location.
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Location Services (Wireless) (1/4)
Satellite-UE Based
• GPS (UE) solution
– Less accuracy in Urban Canyon areas and in-buildings
– Better accuracy in rural/wide-open spaces
– Supports roaming and altitude applications
• A-GPS (UE) solution
– Faster time to first fix (TTFF)
– UE Velocity starting to be implemented (2008)
– Supports roaming and altitude applications
– Some service providers are requiring all newly deployed
3G UE’s to incorporate A-GPS in 2008
– As Galileo satellites come on line TTFF should improve
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Location Services (Wireless) (2/4)
Satellite-UE Based A-GPS (OMA)
• Original implementation used signaling over the Control
Plane
• OMA implemented a Secure User Plane for Location (SUPL)
format which has the following advantages/disadvantages:
• +Uses standard TCP/IP connections (user plane) with no changes to the
GSM Network Architecture
• -Slower Time to First Fix (TTFF)
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Location Services Regulatory
Environment (FCC)
• FCC Mandated Requirements for 911 Call Location
– Network based
• Accuracy within 100 Meters 67% of the cases
• Accuracy within 300 Meters 95% of the cases
• Deployment Timelines for operators are in place
– Handset based
• Accuracy within 50 Meters 67% of the cases
• Accuracy within 150 Meters 95% of the cases
• Deployment Timelines for operators are in place
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Location Services Standardization
Activities - ATIS
• ATIS Emergency Services Industry Forum (ESIF)
– Mission: The mission of ESIF is to provide a forum to
facilitate the identification and resolution of technical
and/or operational issues related to the interconnection of
wireline, wireless, cable, satellites, Internet and
emergency services networks.
– ATIS ESIF and the National Emergency Number
Association (NENA) are working collaboratively to
develop protocols and network architecture for delivering
emergency calls to Public Safety Answering Points
(PSAPs).
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Location Services Standardization
Activities - ATIS
– In response to a request from the FCC’s Network
Reliability & Interoperability Council 7 (NRIC 7), Focus
Group 1A, ATIS ESIF developed the following standards:
– ATIS-0500010 - Maintenance Testing
• Defines requirements and testing procedures needed to perform
maintenance testing for accuracy, as well as the requirements and testing
procedures needed for maintenance testing of end-to-end functionality in
wireless E9-1-1 Phase 1 or Phase 2 systems.
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Location Services Standardization
Activities - ATIS
– ATIS-0500011 - Define Topologies & Data Collection
Methodology
• Defines the topologies in which representative location accuracy data
should be aggregated, and the methodology to accomplish this data
analysis. Once compiled, this information may provide guidance to the
Public Safety authorities on the typical performance in a given usage
environment (e.g., dense urban, urban, suburban, rural) of the various
location technologies currently in use by wireless carriers.
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Location Services Standardization Activities
3GPP (most current)
• 3GPP (3rd Generation Partnership Project)
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TS 22.071, Location Services (LCS) –R7 (UMTS) frozen and stable
TS 23.012v8.0.0 Location Management Procedures frozen and stable
TS 23.271v6.13.1, Stage 2 (LCS) – (UMTS) frozen and stable
TS 24.030v7.2.0 LCS Stage 3 –(UMTS) frozen-stable
TS 32.271v7.0.0 Telecommunication management; Charging management; Location
Services (LCS) charging frozen and stable
TS 43.059v8.0.0 GERAN Stage 2 – (GERAN) frozen-stable
TS 44.031v7.9.0 Location Services (LCS); Mobile Station (MS) - Serving Mobile
Location Centre (SMLC) Radio Resource LCS Protocol (RRLP) frozen and stable
TS 44.035v7.0.0 Location Services (LCS); Broadcast network assistance for Enhanced
Observed Time Difference (E-OTD) and Global Positioning System (GPS) positioning
methods frozen and stable
TS 44.071v7.0.0 GERAN Stage 3 – (GERAN) frozen-stable
TS 48.031v7.1.0 Location Services LCS: Serving Mobile Location Centre - Serving
Mobile Location Centre (SMLC - SMLC); SMLCPP specification frozen and stable
TS 48.071v8.0.0 Location Services (LCS); Serving Mobile Location Centre - Base
Station System (SMLC-BSS) interface; Layer 3 specification frozen and stable
TS 49.031v7.6.0 Location Services (LCS); Base Station System Application Part LCS
Extension (BSSAP-LE) frozen and stable
• 3GPP R8 & 9 – Work in process
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Location Services Standardization
Activities
• Internet Engineering Task Force (IETF)
– Currently developing a Session Initiation Protocol (SIP)
Extension to include Location Conveyance Protocol to
convey geographic location information from one SIP
entity to another SIP entity (PS)
– Probably will be completed in 2008
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Location Services Standardization
Activities
• ETSI/TISPAN work on Location
– Completed work February 2007
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Location Services Standardization
Activities
• Other activities under way:
– OMA (Open Mobile Alliance)
• Has developed Secure User Plane for Location (SUPL)
– TIA (Telecommunications Industry Association)
• Has developed specifications concerning intersystem operations
that enable a wireless systems to provide enhanced location
services
– MAGIC (Mobile/Automotive Geo-Information Services
Core)
• Working on three variants: Ambient-Awareness, Personalization,
and Adaptability
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