Motorola Corporation

David Stephen Saewert

James A Stephens

Vijay K Kapoor

Donald J Sabourin

James Morris Tooker

Kenneth W Hines

David Jesus Garcia

Jerry Shihkuo Tang

Bradley T Sanders

A method ( ) for parameterizing a predetermined geographic area ( ) serviced by a satellite communication system ( ) into a number of equally shaped sub-partitions ( ) is discloseed. The satellite communication system ( ) has a processor ( )for generating data elements and a memory ( ) for storing the data elements in data structure. The method ( ) includes the step ( ) of determining a total latitude side length dimension and a total longitude side length dimension of the predetermined geographic area ( ) from latitude and longitude values representative of the geographic area. The steps ( ) also include determining the area of a sub-partition based upon the total latitude side length, the total longitude side length, and the number of equally shaped sub-partitions. Each of the sub-partitions ( ) are substantially square and have the same area. The steps also include determining ( ) an actual side latitude dimension ( ) of the sub-partition ( ) and storing the side latitude dimension ( ) in the data structure, and determining ( ) an actual side longitude dimension ( ) of the sub-partition ( ) and storing the side longitude dimension ( ) in the data structure. The satellite communication system ( ) generates a grid from the actual side latitude dimension ( ) and the actual side longitude dimension ( ) and superimposes the grid over the predetermined geographic area ( ).

Method for rectangular parameterization of a geographic area using a geolocation algorithm

A method (50) reconstructs messages from segments (30) which are received in an unknown order and at different times. Each segment (30) comprises a header (31) and payload information (38). The method (50) reconstructs messages from the received segments (30) by reassembling the order as specified in the header (31) of the segment (30). Once the message is reconstructed, the message is delivered. This method (50) is especially important in satellite-based communications where no guarantee exists that the messages will be received in a sequential order or at a specified time.

Method of reconstructing and delivering segmented messages

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David Stephen Saewert