| A-GNSS |
Assisted Global Navigation Satellite Systems |
[Brian_Rosen] |
2018-12-07 |
| A-GPS |
GPS with assistance |
[RFC4119] |
|
| AOA |
Angle of Arrival |
[James_Winterbottom] |
|
| best-guess |
The LIS cannot provide an accurate location. The value is its best guess, but may be very inaccurate. |
[Brian_Rosen] |
2012-01-11 |
| Cell |
Location of the cellular radio antenna |
[RFC4119] |
|
| DBH |
Device-Based Hybrid |
[Apple] |
2019-03-21 |
| DBH2 |
A Device-Based Hybrid system (typically on a
mobile device) produces a compound location that
includes a full or partial Civic Address in addition
to the Geodetic Location normally expected from
a DBH system. Distinct from RevGeo because,
even if the DBH system uses reverse-geocoding to
determine the Civic Location, the DBH system
determines and delivers the Civic Location, not a
downstream entity. |
[NENA-REQ-003.1-2022][Tom_Hsu] |
2022-09-15 |
| DBH_HELO |
Device-Based Hybrid using Apple Hybridized Emergency Location |
[Apple] |
2019-03-21 |
| Derived |
This value is intended to represent a location
object determined by geocoding or reverse geocoding
a location determined by some other method. |
[Brian_Rosen] |
2008-07-15 |
| Derived-RevGeo |
A full or partial Civic Location, which is not
validated against an LVF, is derived by reversegeocoding a Geodetic Location. The original
Geodetic Location MUST also be delivered with
the derived Civic Location. Used when a
downstream entity other than the calling device
reverse-geocodes a Geodetic Location it received
from an upstream entity, such as location
services/DBH. |
[NENA-REQ-003.1-2022][Tom_Hsu] |
2022-09-15 |
| DerivedRevGeo-LVF |
A full or partial Civic Location, which is validated
against an LVF, is derived by reverse-geocoding a
Geodetic Location. |
[NENA-REQ-003.1-2022][Tom_Hsu] |
2022-09-15 |
| Device-Assisted_A-GPS |
Device provides psuedo-ranges to a network element
that computes the location |
[James_Winterbottom] |
|
| Device-Assisted_EOTD |
Enhanced Observed Time Difference, device provides
measurements, network element computes location |
[James_Winterbottom] |
|
| Device-Based_A-GPS |
Network provides psuedo-ranges to the device and
the device computes its location |
[James_Winterbottom] |
|
| Device-Based_EOTD |
Enhanced Observed Time Difference, network element
provides measurements and device computes location |
[James_Winterbottom] |
|
| DHCP |
Provided by DHCP (used for wireline access
networks, see 802.11 below) |
[RFC4119] |
|
| E-CID |
Enhanced Cell Identifier |
[Brian_Rosen] |
2018-12-07 |
| ELS-BLE |
Civic Address representing the associated location of the
UE based upon the Bluetooth beacon from ELS |
[ATIS-0700028.v002][Roger_Marshall] |
2019-04-22 |
| ELS-WiFi |
Civic Address representing the associated location of the
UE based upon the referenced Wi-Fi Access Point from ELS |
[ATIS-0700028.v002][Roger_Marshall] |
2019-04-22 |
| GNSS |
Global Navigation Satellite Systems |
[Brian_Rosen] |
2018-12-07 |
| GPS |
Global Positioning System |
[RFC4119] |
|
| Handset_AFLT |
Advanced Forward Link Trilateration |
[James_Winterbottom] |
|
| Handset_BLE |
Bluetooth based X,Y position, using beacon proximity
with varying power and coverage levels |
[NENA-STA-010.3-2021][Brian_Rosen] |
2022-05-12 |
| Handset_EFLT |
Enhanced Forward Link Trilateration |
[James_Winterbottom] |
|
| Handset_WiFi |
WLAN based X,Y position, using beacon proximity or
ranging methods |
[NENA-STA-010.3-2021][Brian_Rosen] |
2022-05-12 |
| Hybrid_A-GPS |
Device provides psuedo-rangesto a network element
that computes the location in combination with
network measurements |
[James_Winterbottom] |
|
| hybridAGPS_AFLT |
Hybrid of Assisted GPS and Advanced Forward Link Trilateration |
[Brian_Rosen] |
2018-12-07 |
| hybridCellSector_AFLT |
Positioning based on combining information from multiple cells or sectors |
[NENA-STA-010.3-2021][Brian_Rosen] |
2022-05-12 |
| hybridCellSector_AGPS |
Hybrid of Cell/Sector based and Assisted GPS |
[Brian_Rosen] |
2018-12-07 |
| hybridOTDOA_A-GNSS |
Positioning based on the combination of OTDOA and multiple constellations (GPS, GLONASS, Galileo, etc.) |
[NENA-STA-034.1-2021][Brian_Rosen] |
2022-05-12 |
| hybridOTDOA_AGPS |
Positioning based on the combination of OTDOA and AGPS measurements |
[NENA-STA-034.1-2021][Brian_Rosen] |
2022-05-12 |
| hybridRFPatternMatch_AGPS |
Network-centric positioning method based on a combination of radio link
measurements collected from the network and/or the device and AGPS |
[NENA-STA-010.3-2021][Brian_Rosen] |
2022-05-12 |
| hybridTDOA_A-GNSS |
Positioning based on the combination of TDOA and multiple constellations
(GPS, GLONASS, Galileo, etc.) |
[NENA-STA-010.3-2021][Brian_Rosen] |
2022-05-12 |
| hybridTDOA_AOA |
Hybrid of Time Difference of Arrival and Angle of Arrival |
[Brian_Rosen] |
2018-12-07 |
| hybridTDOA_AGPS |
Hybrid of Time Difference of Arrival and AGPS |
[Brian_Rosen] |
2018-12-07 |
| hybridTDOA_AGPS_AOA |
Hybrid of Time Difference of Arrival, Assisted GPS and Angle of Arrival |
[Brian_Rosen] |
2018-12-07 |
| hybridWiFi_AGPS |
Positioning in the network based on the combination of Wi-Fi and
AGPS measurements |
[NENA-STA-010.3-2021][Brian_Rosen] |
2022-05-12 |
| IPDL |
Idle Period Down Link |
[James_Winterbottom] |
|
| LLDP-MED |
Provided by Link Layer Discovery Protocol - Media
Endpoint Discovery (LLDP-MED) |
[Telecommunications Industry Association, "Link Layer Discovery
Protocol for Media Endpoint Devices", ANSI/TIA-1057, April 2006.][Peter_Blatherwick] |
|
| Manual |
Entered manually by an operator or user, e.g.,
based on subscriber billing or service location
information |
[RFC4119] |
|
| Manual-FIXED |
A Civic Location is derived by knowledge that the
calling device is connecting via a semi-static
small-cell device that is at a known, validated,
address, such as a pico/femtocell or that the
calling device is a fixed cellular device. |
[NENA-REQ-003.1-2022][Tom_Hsu] |
2022-09-15 |
| Manual-RESD |
A Civic Location is provided using knowledge that
the calling device is a static device at a known,
validated, residential address. |
[NENA-REQ-003.1-2022][Tom_Hsu] |
2022-09-15 |
| MBS |
Metropolitan Beacon System |
[NextNav] |
2017-05-25 |
| MPL |
Measured Path Loss |
[James_Winterbottom] |
2007-10-18 |
| NEAD-BLE |
Civic Address representing the provisioned location of a
Bluetooth beacon to support the dispatching of emergency services. |
[ATIS-0700028][Roger_Marshall] |
2016-05-12 |
| NEAD-WiFi |
Civic Address representing the provisioned location of a
Wi-Fi Access Point to support the dispatching of emergency services. |
[ATIS-0700028][Roger_Marshall] |
2016-05-12 |
| networkRFFingerprinting |
Network Based RF Fingerprinting |
[Brian_Rosen] |
2018-12-07 |
| networkTDOA |
Network Based Time Difference of Arrival |
[Brian_Rosen] |
2018-12-07 |
| networkTOA |
Network Based Time of Arrival |
[Brian_Rosen] |
2018-12-07 |
| NMR |
Network Measurement Reports |
[James_Winterbottom] |
|
| OTDOA |
Observed Time Difference of Arrival |
[James_Winterbottom] |
|
| Proximity |
A Civic Location is provided using knowledge that
the caller is at or near a specific registered
address for that person’s identity and/or their
device, such as determining by analyzing the
caller’s Geodetic Location that they are at their
registered home address or that they are placing
a call from their home Wi-Fi. |
[NENA-REQ-003.1-2022][Tom_Hsu] |
2022-09-15 |
| RFID |
Proximity to a Radio Frequency Identification
beacon |
[James_Winterbottom] |
|
| RSSI |
Received Signal Strength Indicator |
[James_Winterbottom] |
2007-10-18 |
| RSSI-RTT |
Combination of Received Signal Strength Indicator
and Round Trip Time used to determine the location
of the Target |
[James_Winterbottom] |
2007-10-18 |
| RTT |
Round Trip Time |
[James_Winterbottom] |
|
| TA |
Timing Advance |
[James_Winterbottom] |
|
| TA-NMR |
Timing Advance and Network Measurement Reports |
[James_Winterbottom] |
|
| Triangulation |
Triangulated from time-of-arrival, signal strength
or similar measurements |
[RFC4119] |
|
| UTDOA |
Uplink Time Difference of Arrival |
[James_Winterbottom] |
|
| Wiremap |
Location determined using wiremap correlations to
ciruit identifiers |
[James_Winterbottom] |
|
| 802.11 |
802.11 access point (used for DHCP-based
provisioning over wireless access networks) |
[RFC4119] |
|
