"Geolocation Policy: A Document Format for Expressing Privacy Preferences for Location Information", Henning Schulzrinne, Hannes Tschofenig, John Morris, Jorge Cuellar, James Polk, 13-Jul-09. ( bytes)

This document defines an authorization policy language for controlling access to location information. It extends the Common Policy authorization framework to provide location-specific access control. More specifically, this document defines condition elements specific to location information in order to restrict access based on the current location of the Target. Furthermore, it offers location- specific transformation elements to reduce the granularity of the returned location information.

"A Document Format for Filtering and Reporting Location Notications in the Presence Information Document Format Location Object (PIDF-LO)", Rohan Mahy, Brian Rosen, Hannes Tschofenig, 27-Jul-09. ( bytes)

This document describes filters that limit asynchronous location notifications to compelling events, designed as an extension to RFC 4661 "An XML-Based Format for Event Notification Filtering". The resulting location information is conveyed in existing location formats wrapped in the Presence Information Document Format (PIDF-LO).

"GEOPRIV Layer 7 Location Configuration Protocol; Problem Statement and Requirements", Hannes Tschofenig, Henning Schulzrinne, 13-Jul-09. ( bytes)

This document provides a problem statement, lists requirements and captures design aspects for a Geopriv Layer 7 Location Configuration Protocol L7 (LCP). This protocol aims to allow an end host to obtain location information, by value or by reference, from a Location Information Server (LIS) that is located in the access network. The obtained location information can then be used for a variety of different protocols and purposes. For example, it can be used as input to the Location-to-Service Translation Protocol (LoST) or to convey location within SIP to other entities.

"HTTP Enabled Location Delivery (HELD)", Mary Barnes, James Winterbottom, Martin Thomson, Barbara Stark, 24-Jun-09. ( bytes)

A Layer 7 Location Configuration Protocol (L7 LCP) is described that is used for retrieving location information from a server within an access network. The protocol includes options for retrieving location information in two forms: by value and by reference. The protocol is an extensible application-layer protocol that is independent of session-layer. This document describes the use of HyperText Transfer Protocol (HTTP) and HTTP over Transport Layer Security (HTTP/TLS) as transports for the protocol.

"Requirements for a Location-by-Reference Mechanism", Roger Marshall, 26-Feb-09. ( bytes)

This document defines terminology and provides requirements relating to Location-by-Reference approach using a location URI to handle location information within signaling and other Internet messaging.

"Discovering the Local Location Information Server (LIS)", Martin Thomson, James Winterbottom, 7-May-09. ( bytes)

Discovery of the correct Location Information Server (LIS) in the local access network is necessary for devices that wish to acquire location information from the network. A method is described for the discovery of a LIS in the access network serving a device. Dynamic Host Configuration Protocol (DHCP) options for IP versions 4 and 6 are defined that specify a domain name. This domain name is then used as input to a URI-enabled NAPTR (U-NAPTR) resolution process.

"Dynamic Host Configuration Protocol (DHCP) IPv4 and IPv6 Option for a Location Uniform Resource Identifier (URI)", James Polk, 12-Jul-09. ( bytes)

This document creates a Dynamic Host Configuration Protocol (DHCP) Option for the downloading of a Location Uniform Resource Identifier (URI) of a client, to be dereferenced in a separate transaction. Once the location URI is received by an endpoint, it can be dereferenced by the client to learn its geographic location, or sent to another entity to learn this client's location.

"Implications of 'retransmission-allowed' for SIP Location Conveyance", Jon Peterson, Ted Hardie, John Morris, 9-Mar-09. ( bytes)

This document explores an ambiguity in the interpretation of the element of the Presence Information Data Format for Location Objects (PIDF-LO) in cases where PIDF-LO is conveyed by the Session Initiation Protocol (SIP). It provides recommendations for how the SIP location conveyance mechanism should adapt to these ambiguities. Documents standardizing the SIP location conveyance mechanisms will be standards-track documents processed according to the usual SIP process. This document is intended primarily to provide the SIP working group with a statement of the consensus of the GEOPRIV working group on this topic. It secondarily provides tutorial information on the problem space for the general reader.

"Considerations for Civic Addresses in PIDF-LO - Guidelines and IANA Registry Definition", Karl Wolf, Alexander Mayrhofer, 9-Jul-09. ( bytes)

This document provides a guideline for creating civic address consideration documents for individual countries, as required by RFC 4776. Furthermore, this document also creates an IANA Registry referring to such address consideration documents and registers such an address consideration for Austria.

"A Uniform Resource Identifier for Geographic Locations ('geo' URI)", Alexander Mayrhofer, Christian Spanring, 3-Jul-09. ( bytes)

This document specifies an Uniform Resource Identifier (URI) for geographic locations using the 'geo' scheme name. A 'geo' URI identifies a physical location in a two- or three-dimensional coordinate reference system in a compact, simple, human-readable, and protocol independent way. The default coordinate reference system used is WGS-84.

"Dynamic Host Configuration Protocol Option for Coordinate-based Location Configuration Information", James Polk, John Schnizlein, Marc Linsner, Bernard Aboba, 12-Jul-09. ( bytes)

This document specifies a Dynamic Host Configuration Protocol Option for the coordinate-based geographic location of the client. The Location Configuration Information (LCI) includes latitude, longitude, and altitude, with resolution indicators for each. The reference datum for these values is also included.

"An Architecture for Location and Location Privacy in Internet Applications", Richard Barnes, Matt Lepinski, Alissa Cooper, John Morris, Hannes Tschofenig, Henning Schulzrinne, 9-Jul-09. ( bytes)

Location-based services (such as navigation applications, emergency services, management of equipment in the field) need geographic location information about Internet hosts, their users, and other related entities. These applications need to securely gather and transfer location information for location services, and at the same time protect the privacy of the individuals involved. This document describes an architecture for privacy-preserving location-based services in the Internet, focusing on authorization, security, and privacy requirements for the data formats and protocols used by these services.

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