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System and method for pushing information from a host system to a mobile data communication device in a wireless data network

  • US 8,516,055 B2
  • Filed: 08/29/2001
  • Issued: 08/20/2013
  • Est. Priority Date: 05/29/1998
  • Status: Active Grant
First Claim
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1. A method operable at a store-and-forward server associated with a wide area packet network and an Internet Protocol (IP)-based wireless network, the method comprising:

  • maintaining, at the store-and-forward server, a mapping between a temporary Internet Protocol (IP) address of a mobile data communication device and a unique permanent identifier of the mobile data communication device;

    maintaining, at the store-and-forward server, a mapping between the unique permanent identifier of the mobile data communication device and a phone number associated with the mobile data communication device;

    receiving a message redirected from a message server over the wide area packet network, the message contained in an envelope that includes the unique permanent identifier of the mobile data communication device; and

    upon determining that the temporary IP address of the mobile data communication device is invalid, performing the following;

    transmitting a connection request command to the phone number of the mobile data communication device to instruct the mobile data communication device to acquire an IP address;

    receiving from the mobile data communication device a new IP address assigned to the mobile data communication device; and

    using the new IP address received from the mobile data communication device, transmitting the message to the mobile data communication device over the IP-based wireless network.

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