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Abstract

Methods for synchronizing PIM data between a wireless telephone and a synchronization server. A communication in interface is established between the telephone and the server, using a wireless network and the Internet. The telephone initiates the synchronization by placing a data call to the server and logging on to the server. A sync client within the telephone sends recent changes to its dataset to the server and requests an acknowledgement of these changes. In an acknowledgement message, the server specifies which changes were actually received. Based on this acknowledgment, the client continues resending changes until it receives confirmation that the server has received all of its changes. The server performs conflict and duplicate resolution between the changes received from the client and other changes of which the server is aware, and enters into its dataset those changes that survive the resolutions. The client also requests that the server send changes that have been made to the server's dataset. The server identifies all changes that should be sent to the client and that have survived the conflict and duplicate resolutions. The server then sends its changes to the client, requests acknowledgement, and resends changes until it confirms that the client has received all of the changes. The client enters the changes from the server into its dataset without any further conflict or duplicate resolution. The client then logs off of the server and ends the data call.

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