Patent ID: 8812013

Claim:
A mobile device, comprising: a radio component that establishes peer-to-peer communication with an additional mobile device using a plurality of radio technologies concurrently; and a localization component that: estimates a first physical distance between the mobile devices based at least in part on first localization data associated with a first of the plurality of radio technologies; estimates a second physical distance between the mobile devices that is more accurate than the first physical distance based at least in part on second localization data associated with using concurrently the first of the plurality of radio technologies and a second of the plurality of radio technologies, wherein the second localization data is different than the first localization data and the second physical distance is estimated subsequent to the estimation of the first physical distance; detects a relative position of the mobile device with respect to the additional mobile device based at least in part upon the second physical distance; and determines a global physical location of the mobile device by combining a global physical location of the additional mobile device determined by the additional mobile device via infrastructure localization with the relative position of the mobile device.