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Using Device-Provided Location-Related Measurements in Location Configuration Protocols
RFC 7105

Internet Engineering Task Force (IETF)                        M. Thomson
Request for Comments: 7105                                       Mozilla
Category: Standards Track                                J. Winterbottom
ISSN: 2070-1721                                             Unaffiliated
                                                            January 2014

          Using Device-Provided Location-Related Measurements
                  in Location Configuration Protocols

Abstract

   This document describes a protocol for a Device to provide location-
   related measurement data to a Location Information Server (LIS)
   within a request for location information.  Location-related
   measurement information provides observations concerning properties
   related to the position of a Device; this information could be data
   about network attachment or about the physical environment.  A LIS is
   able to use the location-related measurement data to improve the
   accuracy of the location estimate it provides to the Device.  A basic
   set of location-related measurements are defined, including common
   modes of network attachment as well as assisted Global Navigation
   Satellite System (GNSS) parameters.

Status of This Memo

   This is an Internet Standards Track document.

   This document is a product of the Internet Engineering Task Force
   (IETF).  It represents the consensus of the IETF community.  It has
   received public review and has been approved for publication by the
   Internet Engineering Steering Group (IESG).  Further information on
   Internet Standards is available in Section 2 of RFC 5741.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   http://www.rfc-editor.org/info/rfc7105.

Thomson & Winterbottom       Standards Track                    [Page 1]
RFC 7105                  Location Measurements             January 2014

Copyright Notice

   Copyright (c) 2014 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1. Introduction ....................................................4
   2. Conventions Used in This Document ...............................5
   3. Location-Related Measurements in LCPs ...........................6
   4. Location-Related Measurement Data Types .........................7
      4.1. Measurement Container ......................................7
           4.1.1. Time of Measurement .................................8
           4.1.2. Expiry Time on Location-Related Measurement Data ....8
      4.2. RMS Error and Number of Samples ............................9
           4.2.1. Time RMS Error ......................................9
      4.3. Measurement Request .......................................10
      4.4. Identifying Location Provenance ...........................11
   5. Location-Related Measurement Data Types ........................13
      5.1. LLDP Measurements .........................................13
      5.2. DHCP Relay Agent Information Measurements .................14
      5.3. 802.11 WLAN Measurements ..................................15
           5.3.1. WiFi Measurement Requests ..........................18
      5.4. Cellular Measurements .....................................18
           5.4.1. Cellular Measurement Requests ......................22
      5.5. GNSS Measurements .........................................22
           5.5.1. GNSS: System Type and Signal .......................23
           5.5.2. Time ...............................................24
           5.5.3. Per-Satellite Measurement Data .....................24
           5.5.4. GNSS Measurement Requests ..........................25
      5.6. DSL Measurements ..........................................25
           5.6.1. L2TP Measurements ..................................26
           5.6.2. RADIUS Measurements ................................26
           5.6.3. Ethernet VLAN Tag Measurements .....................27
           5.6.4. ATM Virtual Circuit Measurements ...................28

Thomson & Winterbottom       Standards Track                    [Page 2]
RFC 7105                  Location Measurements             January 2014

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