Qwest Wireless E911 Phase II Deployment Status

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Qwest Wireless E-911 Phase IIDeploymentStatus

• April 09, 2003
• Presented by Travis Beard
• Product Manager E-911 and Regulatory Issues

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What are E-911 Phases

• Phase 0 Wireless carrier delivers voice only to
  appropriate PSAP.
• Phase I Wireless carrier delivers address of
  cell sector origination and call back number to
  appropriate PSAP.
• Phase II Wireless carrier delivers latitude and
  longitude of location of 911 call. Some carriers
  will also deliver uncertainty or confidence
  factor.

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Network Based Solutions
TDOA Time Difference of Arrival
AOA Angle of Arrival
TDOA/AOA
Calculates RF timing signals from at minimum 3
cell sites to locate position of wireless
handset.
Calculates angle of RF signals from at minimum 2
cell sites to locate position of wireless handset.
Calculates position of the wireless handset using
a combination of network based location
technologies. This technology will primarily be
used in rural highway fixes.
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Accuracy Requirements

• 100 M accuracy 67 of the time.
• 300 M accuracy 95 of the time.

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Pros and Cons

• Cons
• Poor accuracy in rural/suburban settings.
• Location messaging goes across separate network
  than voice call
• Expensive to implement.
• Zoning and Leasing requirements could slow/delay
  implementations.
• Privacy kept at network (carrier) level.

• Pros
• Works well in urban canyon settings.
• No handset upgrades needed.

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Carriers using Technology

• Manufacturers of Network Solutions
• Grayson Wireless
• True Position
• Carriers Implementing
• ATT
• Cingular
• T-Mobile (formerly Voice Stream
• Nextel (in some markets)
• Verizon (in some markets)
• And other medium and small sized carriers.

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Handset/Hybrid Solutions
Wireless Network
Wireless Carrier
GPS
Data
Voice Data
Reference GPS
Voice Data
SnapTrack Server
SnapTrack Client

• Emergency Help/PSAP

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Accuracy Requirements

• 50 M 67 of the time
• 150 M 95 of the time
• Handset sales requirements (medium sized carrier
  only dates)
• Begin selling A-GPS handsets by 03/01/03
• 25 of all new handset sales have A-GPS
  capability by 05/31/03.
• 50 of all new handset sales have A-GPS
  capability by 11/30/03.
• 100 of all new handset sales have A-GPS
  capability by 05/31/04.
• 95 total subscriber penetration of A-GPS
  handsets by 12/31/05.

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Pros and Cons

• Pros
• Works well in rural and suburban settings.
• Ability to use network timing for location fixes
  when GPS satellites can not be used.
• Privacy controlled at handset (exception for
  911).
• Messaging takes place as part of air interface.
• Supports mid-call location today!
• As handset technology advances so will location
  technology.
• Easy to implement

• Cons
• Location fixes occasionally take longer than 8
  seconds (Will be shortened in future S/W
  releases).
• GPS works extremely well, however initial network
  timing technology is not as accurate.
• Consumers are required to upgrade handsets.

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Carriers using Technology

• Sprint PCS
• Verizon (most markets)
• Alltel
• Nextell (Some markets)
• Cricket
• Qwest Wireless
• Most of the CDMA carriers have adopted this
  solution.

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Qwest Integration Trials (Pre-FOA)

• Qwest conducted a Pre-FOA trial in Colorado
  Springs CO in early 2002. Purpose of this trial
  was to
• Integrate E3, E5, E12 and E2 interfaces.
• Validate that all vendors compliant with
  J-STD-036 (MPC, PDE, MSC, BSC, ALI, PSAP CPE).
• Validate accuracy performance

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Qwest FOA and Accuracy Trials

• Conducted 2 end to end trials in Colorado
  Springs, CO (Lucent) and Pottawattamie County, IA
  (PCSAN).
• Testing included end to end 911 calls with PSAP.
• Validated accuracy and live 911 Phase II call
  scenarios.
• Both scenarios were focused on rural and suburban
  settings.
• Handset accuracy testing
• Conducted additional accuracy trial in Seattle
  Washington.
• Did not include PSAP
• Testing focused primarily on accuracy in Urban
  and Dense Urban settings.
• Included Water and tunnel scenarios.
• Handset accuracy testing.

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Qwest Deployments

• Currently have deployed Phase II with the
  following PSAPs
• El Paso/Teller County, CO (2 PSAPs)
• City and County of Denver, CO (1 PSAP)
• Boulder County, CO (3 PSAPs)
• Larimer County, CO (2 PSAPs)
• King County, Washington (5 PSAPs) (most of
  Seattle Metro area)
• Minneapolis Metro Area (20 PSAPs)

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Key Learning's from Deployments

• PSAP should be concerned about CAD and ALI format
  changes.
• PSAP must have Rebid functionality programmed
  within CPE.
• Audio break up at call set-up and during rebid.
• Accuracy of Cell site data impacts accuracy of
  location fixes.
• Cell site calibration used to enhance network
  timing and hybrid fixes shortened from 6-8 hours
  per cell site to 20 minutes.
• PSAP readiness must be completed before a carrier
  can deploy.

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Qwest Communications 30W ALI Format
[phone] WPH2 01/20 0800 Qwest
Wireless
P206-555-1234 123 Main Street SW 2063876678
27 00311 Seattle
TELQwest 38.830790 -104.825148
33 PSAPWSP - - Wireless Verify Verify Verify
Class of Service descriptions WRLS or MOBL or
CELL Non-Phase 2 carrier making a 911 Phase I
call. No Phase 2 information will be
available. WPH1 Phase 2 carrier making a 911
call. Phase 2 data was not available at call
set-up, however rebid will provide Phase 2 data.
Note Rebid will only work for calls that utilize
an A-GPS handset WPH2 Phase 2 information
either provided at call set-up or at the time of
rebid. Dispatcher can continue to rebid as long
as call is still set-up. (Phase 2 fix can not be
provided if call has been disconnected).
Latitude and Longitude of Location provided by
PDE Displayed in Decimal format.
Uncertainty Factor This number is displayed in
Meters. The number tells the 911 operator how
many meters the latitude and longitude provided
is within the actual fix. For GPS fixes this
number will be very small and for AFLT and hybrid
fixes this number will be medium to large.
Default Phase 1 data should always display as
77778. This data may be different at time of
deployment, however shortly after a default range
will be used.
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Phase II Call Flow

• Wireless Subscriber will dial 911
• PSAP will receive voice call and data on ALI as
  E-911 Phase 1 format.
• PSAP call taker will rebid ALI 15 seconds after
  call set-up and Phase 2 data will repopulate ALI
  with Latitude, Longitude and Uncertainty Factor
• For easy reference, during our trial the
  uncertainty for a P1 data stream always displayed
  77778 in addition to the COS displayed as
  WRLS
• When Phase 2 data is acquired, the uncertainty
  level will be much lower (lower the number the
  better results) and the COS will change to
  WPH2.
• The PSAP call taker can continue to rebid the ALI
  if they desire location fixes for a moving
  vehicle. The caveat to this is that the rebid
  activity can only occur every 15-20 seconds.
• NOTE It is currently anticipated that the call
  flow will change in 2Q03-3Q03 when PDE version
  5.0 is implemented. Quick fix feature will
  provide capability to provide a location fix
  within 8 seconds. This software has not been
  tested in a commercial environment and could be
  delayed.

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A-GPS Phone examples
Motorola T720 (NOW SELLING)
Kyocera 2325 (NOW SELLING)
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Handset Sales

• Qwest began selling its first A-GPS capable
  handset on 01/31/03.
• Initial sales of handsets is between 10-20 of
  all new handset sales with minimal marketing or
  education to sales force.
• A-GPS handsets being sold in all markets.
• Multiple handsets offerings need to be offered to
  meet 50 and higher benchmarks.
• On target to achieve all FCC benchmarks regarding
  handset sales.

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Challenges and Issues

• Accuracy improvements using AFLT and hybrid
  technology.
• Routing and providing Phase 2 information at
  call set-up versus requiring PSAP to pull
  Phase 2 information after the call has been
  routed. (PDE software release 5.0 should provide
  this functionality)
• PSAPs requesting service from QW must align CPE
  upgrades within six months of request. If these
  upgrades do not happen, QW will be in a position
  to deploy in other areas where the upgrades have
  been completed delaying deployment.
• Processes will need to continue to be improved
  upon to improve efficiencies of resources that
  are required to enable deployment.
• Handset sales will need to be monitored on a
  monthly basis to assure penetration metrics can
  be achieved.
• Removal of Latitude and Longitude on a WPH1
  ALI record.

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Questions and Answers