ATIS Wireless Location Services (LS) Update

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ATIS Wireless Location Services (LS) Update
DOCUMENT GSC13-GRSC6-20r1
FOR Presentation
SOURCE ATIS
AGENDA ITEM GRSC Location Services 4.1
CONTACT(S) Don Zelmer (don.zelmer_at_att.com)
Submission DateJuly 16, 2008
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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
• Generally works with legacy phones without any
  modifications
• Apparently complies with 3GPP OMA
  Specifications
• Supports, to some degree, backward compatible
  with legacy UEs
• 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

• API Application Programming Interface
• ESIFEmergency 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

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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 UEs 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
  doesnt 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 UEs 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 FCCs 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)
• 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