Back to results
US 8,805,413 B2Granted
Methods and apparatuses for use in determining a location of a mobile device within a multi-level physical structure
AssigneeQUALCOMM Incorporated
InventorsRajarshi Gupta, Saumitra Mohan Das, Min-Wook Jeong
Life of this patent
Estimating the term…
Abstract
Methods and apparatuses are provided that may be implemented in a mobile device to determine that the mobile device is located within a particular level of a multi-level physical structure based, at least in part, on a comparison of measured wireless signals and stored measurements of wireless signals.
Claims20
A method comprising, at a mobile device:
- receiving stored measurements of wireless signals corresponding to at least two different levels within a multi-level physical structure, said measurements being indicative of a baseline set of parameters for wireless signals received from a plurality of transmitters assigned to specific levels of the multi-level physical structure, the baseline set of parameters comprising a baseline probability distribution;
- measuring wireless signals from two or more of the plurality of transmitters;
- determining a variation between the baseline set of parameters and at least one corresponding parameter for at least one of the measured wireless signals;
- and
- in response to a determination that the variation satisfies a threshold variation, determining that the mobile device is located within a particular level of the multi-level physical structure based, at least in part, on the variation.
2 more elements
An apparatus for use in a mobile device, the apparatus comprising:
- means for receiving stored measurements of wireless signals corresponding to at least two different levels within a multi-level physical structure, said measurements being indicative of a baseline set of parameters for wireless signals received from a plurality of transmitters assigned to specific levels of the multi-level physical structure, the baseline set of parameters comprising a baseline probability distribution;
- means for measuring wireless signals from two or more of the plurality of transmitters;
- means for determining a variation between the baseline set of parameters and at least one corresponding parameter for at least one of the measured wireless signals;
- and
- means for determining that the mobile device is located within a particular level of the multi-level physical structure, in response to a determination that the variation satisfies a threshold variation, based, at least in part, on the variation.
2 more elements
A mobile device comprising:
- a network interface;
- and
- a processing unit to:
- receive, via the network interface, stored measurements of wireless signals corresponding to at least two different levels within a multi-level physical structure, said measurements being indicative of a baseline set of parameters for wireless signals received from a plurality of transmitters assigned to specific levels of the multi-level physical structure, the baseline set of parameters comprising a baseline probability distribution;
- measure wireless signals via the network interface from two or more of the plurality of transmitters;
- determine a variation between the baseline set of parameters and at least one corresponding parameter for at least one of the measured wireless signals;
- and
- in response to a determination that the variation satisfies a threshold variation, determine that the mobile device is located within a particular level of the multi-level physical structure based, at least in part, on the variation.
5 more elements
An article comprising:
- a non-transitory computer readable medium having stored therein instructions executable by a processing unit in a mobile device to:
- receive stored measurements of wireless signals corresponding to at least two different levels within a multi-level physical structure, said measurements being indicative of a baseline set of parameters for wireless signals received from a plurality of transmitters assigned to specific levels of the multi-level physical structure, the baseline set of parameters comprising a baseline probability distribution;
- measure wireless signals from two or more of the plurality of transmitters;
- determine a variation between the baseline set of parameters and at least one corresponding parameter for at least one of the measured wireless signals;
- and
- in response to a determination that the variation satisfies a threshold variation, determine that the mobile device is located within a particular level of the multi-level physical structure based, at least in part, on the variation.
3 more elements
Dependencies are inferred from the claim text.