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US 9,288,634 B2Granted
Determining the position of a mobile device in an indoor environment
AssigneeEmpire Technology Development LLC
InventorArvind Vijay Keerthi
Life of this patent
Estimating the term…
Abstract
Technologies and implementations for determining the location of a device in an indoor environment are generally disclosed.
Claims19
A method, comprising:
- receiving, via a mobile device, a wide-band transmission transmitted from at least one base station of three or more base stations, wherein the wide-band transmission includes distributed traffic symbol portions, distributed pilot symbol portions, and intermittent punctured pilot symbol portions, wherein the intermittent punctured pilot symbol portions include pilot symbols transmitted randomly throughout the wide-band transmission;
- determining, via the mobile device, a first path portion of the wide-band transmission based at least in part on the intermittent punctured pilot symbol portions, wherein the first path portion of the wide-band transmission is associated with a first time delay and a second path portion of the wide-band transmission is associated with a second time delay;
- determining, via the mobile device, a distance between the mobile device and the at least one base station based at least in part on the first time delay;
- and
- determining, via the mobile device, a location of the mobile device based at least in part on the determined distance;
- wherein the wide-band transmission has a power-delay profile at the mobile device;
- and
- wherein determining the first path portion includes evaluating a first part of the power-delay profile that is earlier than a second part of the power-delay profile that relates to the second path portion.
5 more elements
A mobile handset apparatus, comprising:
- a housing;
- an antenna located within the housing;
- a first analog-to-digital converter operably coupled to the antenna;
- a second analog-to-digital converter operably coupled to the antenna, wherein the second analog-to-digital converter has an operating speed greater than the first analog-to-digital converter;
- and
- a processor operably coupled to the first and second analog-to-digital converters;
- wherein the processor is configured to:
- switch between the first and second analog-to-digital converters so as to process distributed traffic symbol portions and/or distributed pilot symbol portions of a wide-band transmission transmitted from at least one base station of three or more base stations via the first analog-to-digital converter, and so as to process intermittent punctured pilot symbol portions of the wide-band transmission, including pilot symbols transmitted randomly throughout the wide-band transmission, via the second analog-to-digital converter.
5 more elements
Dependencies are inferred from the claim text.