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Signaling over cellular networks to reduce the Wi-Fi energy consumption of mobile devices

  • US 8,358,975 B2
  • Filed: 12/26/2007
  • Issued: 01/22/2013
  • Est. Priority Date: 04/05/2007
  • Status: Active Grant
First Claim
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1. A method comprising:

  • receiving, by a server device, data sent by a first mobile device directed to a second mobile device;

    sending, by the server device, a wake-up signal to the second mobile device, wherein the wake-up signal is sent by way of a cellular network;

    receiving, by the server device, an Internet Protocol (IP) address associated with the second mobile device from the second mobile device in response to sending the wake-up signal; and

    initiating, by the server device, direct communication between the first mobile device and the second mobile device via a wireless IP-based network by sending credentials of the second mobile device to the first mobile device in conjunction with receiving the data from the first mobile device.

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