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Energy efficient roaming of a mobile device

  • US 9,179,263 B2
  • Filed: 12/22/2011
  • Issued: 11/03/2015
  • Est. Priority Date: 12/22/2011
  • Status: Expired
First Claim
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1. A method comprising:

  • activating a radio in a mobile device by a processor of the mobile device, the radio configured to communicate with a wireless network;

    provisioning the mobile device with at least one pre-determined environment profile, wherein the at least one pre-determined environment profile comprises conditions under which the radio is unable to connect with the wireless network;

    sensing, by a sensor of the mobile device, an environmental condition of the mobile device to generate a sensor signal;

    generating, by the processor of the mobile device, an environmental profile of the mobile device based at least on the sensor signal;

    comparing, by the processor of the mobile device, the environmental profile of the mobile device with the at least one pre-determined environmental profile;

    deactivating, by the processor of the mobile device, the activated radio when the comparing indicates that the environmental profile is above a threshold of the pre-determined environmental profile for a first period of time; and

    reactivating, by the processor of the mobile device, the deactivated radio when the comparing indicates that the environmental profile is below a threshold of the pre-determined environmental profile for a second period of time,wherein the sensor is an altimeter and the wireless network comprises an IEEE 802.11 wireless communication system, and wherein the environmental profile further comprises a rate of change in altitude of the mobile device, and wherein the threshold indicates that the mobile device is within a building, whereupon the radio is activated.

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