2004-11-03 2012-01-11 First Come First Served These tokens are associated with the PIDF-LO object. A-GPS GPS with assistance AOA Angle of Arrival best-guess The LIS cannot provide an accurate location. The value is its best guess, but may be very inaccurate. Cell Location of the cellular radio antenna Derived This value is intended to represent a location object determined by geocoding or reverse geocoding a location determined by some other method. Device-Assisted_A-GPS Device provides psuedo-ranges to a network element that computes the location Device-Assisted_EOTD Enhanced Observed Time Difference, device provides measurements, network element computes location Device-Based_A-GPS Network provides psuedo-ranges to the device and the device computes its location Device-Based_EOTD Enhanced Observed Time Difference, network element provides measurements and device computes location DHCP Provided by DHCP (used for wireline access networks, see 802.11 below) GPS Global Positioning System Handset_AFLT Advanced Forward Link Trilateration Handset_EFLT Enhanced Forward Link Trilateration Hybrid_A-GPS Device provides psuedo-rangesto a network element that computes the location in combination with network measurements IPDL Idle Period Down Link 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. Manual Entered manually by an operator or user, e.g., based on subscriber billing or service location information MPL Measured Path Loss NMR Network Measurement Reports OTDOA Observed Time Difference of Arrival RFID Proximity to a Radio Frequency Identification beacon RSSI Received Signal Strength Indicator RSSI-RTT Combination of Received Signal Strength Indicator and Round Trip Time used to determine the location of the Target RTT Round Trip Time TA Timing Advance TA-NMR Timing Advance and Network Measurement Reports Triangulation Triangulated from time-of-arrival, signal strength or similar measurements UTDOA Uplink Time Difference of Arrival Wiremap Location determined using wiremap correlations to ciruit identifiers 802.11 802.11 access point (used for DHCP-based provisioning over wireless access networks) Brian Rosen mailto:br&brianrosen.net 2012-01-11 James Winterbottom mailto:james.winterbottom&andrew.com 2007-10-18 Peter Blatherwick mailto:peter_blatherwick&mitel.com 2006-07-19