Location-to-Service Translation (LoST) Protocol Extensions, December 2011
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An important class of location-based services answers the question, "What instances of this service are closest to me?" Examples include finding restaurants, gas stations, stores, automated teller machines, wireless access points (hot spots), or parking spaces. Currently, the Location-to-Service Translation (LoST) protocol only supports mapping locations to a single service based on service regions. This document describes an extension that allows queries of the type "N nearest", "within distance X", and "served by". This document defines an Experimental Protocol for the Internet community.
For the definition of Status, see RFC 2026.
For the definition of Stream, see RFC 4844.