| 摘要 |
The present invention provides a method involving a mobile unit, a location server, a location-based application client, and a location-based application server configured to provide location-based applications. The method includes receiving, at the location server and from the location-based application server, a request from location-based application client for a current location of the mobile unit and attempting, at the location server, to determine the current location of the mobile unit. The method also includes providing, from the location server to the location-based application server, information indicating a previous location of the mobile unit when the attempt to determine the current location of the mobile unit is unsuccessful.
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