Patent ID: 7657368

Claim:
A method of operating a mobile vehicle communication system, comprising the steps of: (a) receiving a navigation request at a service provider, wherein the navigation request includes information regarding a current vehicle location, a desired vehicle destination, and a vehicle telematics unit memory capacity; (b) generating preliminary navigation instructions that generally provide directions for a route extending from the current vehicle location to the desired vehicle destination, wherein the preliminary navigation instructions include a plurality of data elements that each describes a different aspect of the route and has a predetermined priority; (c) producing modified navigation instructions by modifying one or more of the data elements according to its predetermined priority if the data size associated with the preliminary navigation instructions exceeds the vehicle telematics unit memory capacity; and (d) communicating the modified navigation instructions to the vehicle telematics unit in a single transmission, wherein the plurality of data elements includes elements selected from the group consisting of: secondary street names, after maneuver names, street name changes that do not change direction, destination address, compound names, street suffixes, interstate prefixes, and street names with directions.