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Method and apparatus for performing a handoff of a data communication session from one network to another network

  • US 8,918,051 B1
  • Filed: 02/03/2010
  • Issued: 12/23/2014
  • Est. Priority Date: 06/18/2007
  • Status: Expired due to Fees
First Claim
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1. A mobile device, comprising:

  • a first interface module configured tointerface the mobile device to a cellular network, andreceive, from a transmitting device, data transmitted over the cellular network to the mobile device, wherein the data originates at the transmitting device;

    a second interface module configured tointerface the mobile device to a wireless local area network, andreceive, from the transmitting device, data transmitted over the wireless local area network to the mobile device, wherein the data transmitted over the wireless local area network corresponds to the data transmitted over the cellular network; and

    a control module configured tocompare (i) a first time stamp associated with the data received from the transmitting device over the cellular network to (ii) a second time stamp associated with the data received from the transmitting device over the wireless local area network,determine, based on the comparison of the first time stamp to the second time stamp, when the first time stamp matches the second time stamp,in response to a determination that the first time stamp matches the second time, switch a communication link to the transmitting device from the cellular network to the wireless local area network, andin response to, and subsequent to, the communication link to the transmitting device being switched from the cellular network to the wireless local area network, transmit a message to the transmitting device, wherein the message informs the transmitting device not to transmit the data to the mobile device over the network.

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