Mobility

Incremental Route Refinement for GPS-Enabled Cellular Phones

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Executive Summary

This paper proposes significant route identification; the concept is to combine the locations acquired by the GPS module of the user's cellular phone. Significant routes are those that the user most frequently passes along. The proposal overcomes the two main weaknesses of cellular phones. One is that GPS data is acquired infrequently in order to reduce the phone's power consumption, and the other is the poor spatial accuracy of the cellular phone's commercial GPS module. In order to overcome these weaknesses, the proposed approach incrementally refines the stored routes whenever the user passes along them. In more detail, the system compares the newly acquired GPS points to the stored points and appends the new data so as to decrease route ambiguity.

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