This document is an Internet-Draft. Note that other groups may also distribute working documents as Internet-Drafts. Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. Introduction One problem today is to find the geographical location of objects, such as friends, sattelites and airplanes. Furthermore the introduction of nomad technology, such as DHCP, W-LANs, mobile IP and roaming accounts has wired people and mobile objects.
Announcers somehow know and are able to provide the location of an object.
Providers can provide this information to third parties, such as other providers or to Subscribers. A container fright company might want to keep track of its containers, while they are at sea, on the road as well as at their customers. The container company might have a desire to share specific parts of the information with some of its customers. Sometimes the location of the object, as a space craft, is to be published and made known to a large number of users. A space organization could for example provide some icons and a nice backdrop or screen safer which displays latest mission happening live.