Method and apparatus for transmitting indoor context information
First Claim
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1. A method in a mobile device for determining a location of the mobile device using context information from a Home Secure User Plane Location (SUPL) Location Platform (H-SLP), the method comprising:
- determining, at the mobile device, a coarse estimate of the location of the mobile device, the determining the coarse estimate comprising;
determining that the mobile device has entered an indoor environment responsive to the mobile device being unable to acquire at least three signals from a satellite positioning system, andaccessing a position cache of the mobile device to obtain a previously determined location of the mobile device;
sending a request to the H-SLP for indoor context information, wherein the request comprises an indication of the location of the mobile device that comprises the coarse estimate of the location of the mobile device;
receiving the indoor context information from the H-SLP, wherein the indoor context information comprises an indoor map corresponding to locations of access points within an indoor environment;
measuring signal strength, timing, or combination thereof, of signals received from the access points; and
determining the location of the mobile device, based at least in part, upon the indoor map corresponding to the locations of the access points within the indoor environment and upon the measured signal strength, timing, or combination thereof, of the signals received from the access points.
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Abstract
The subject matter disclosed herein relates to a system and method for determining indoor context information relating to a location of a mobile device. Indoor context information may be utilized by a mobile device or a network element to obtain an estimate of a location of the mobile device within an indoor environment.
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Citations
28 Claims
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1. A method in a mobile device for determining a location of the mobile device using context information from a Home Secure User Plane Location (SUPL) Location Platform (H-SLP), the method comprising:
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determining, at the mobile device, a coarse estimate of the location of the mobile device, the determining the coarse estimate comprising; determining that the mobile device has entered an indoor environment responsive to the mobile device being unable to acquire at least three signals from a satellite positioning system, and accessing a position cache of the mobile device to obtain a previously determined location of the mobile device; sending a request to the H-SLP for indoor context information, wherein the request comprises an indication of the location of the mobile device that comprises the coarse estimate of the location of the mobile device; receiving the indoor context information from the H-SLP, wherein the indoor context information comprises an indoor map corresponding to locations of access points within an indoor environment; measuring signal strength, timing, or combination thereof, of signals received from the access points; and determining the location of the mobile device, based at least in part, upon the indoor map corresponding to the locations of the access points within the indoor environment and upon the measured signal strength, timing, or combination thereof, of the signals received from the access points. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A mobile device for determining location using context information from a Home Secure User Plane Location (SUPL) Location Platform (H-SLP), the mobile device comprising:
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means for determining, at the mobile device, a coarse estimate of the location of the mobile device, the means for determining the coarse estimate comprising; means for determining that the mobile device has entered an indoor environment responsive to the mobile device being unable to acquire at least three signals from a satellite positioning system, and means for accessing a position cache of the mobile device to obtain a previously determined location of the mobile device; means for sending a request to the H-SLP for indoor context information, wherein the request comprises an indication of the location of the mobile device that comprises the coarse estimate of the location of the mobile device; means for receiving the indoor context information from the H-SLP, wherein the indoor context information comprises an indoor map corresponding to locations of access points within an indoor environment; means for measuring signal strength, timing, or combination thereof, of signals received from the access points; and means for determining the location of the mobile device, based at least in part, upon the indoor map corresponding to the locations of the access points within the indoor environment and upon the measured signal strength, timing, or combination thereof, of the signals received from the access points. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A mobile device for determining location using context information from a Home Secure User Plane Location (SUPL) Location Platform (H-SLP), the mobile device comprising:
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a processor configured to determine a coarse estimate of the location for the mobile device by; determining that the mobile device has entered an indoor environment responsive to the mobile device being unable to acquire at least three signals from a satellite positioning system, and accessing a position cache of the mobile device to obtain a previously determined location of the mobile device; a transmitter configured to send a request to the H-SLP for indoor context information, wherein the request comprises an indication of the location of the mobile device that comprises the coarse estimate of the location of the mobile device; a receiver configured to receive the indoor context information from the H-SLP, wherein the indoor context information comprises an indoor map corresponding to locations of access points within an indoor environment; the processor further configured to measure signal strength, timing, or combination thereof, of signals received from the access points; and the processor further configured to determine the location of the mobile device, based at least in part, upon the indoor map corresponding to the locations of the access points within the indoor environment and upon the measured signal strength, timing, or combination thereof, of the signals received from the access points. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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22. A non-transitory computer-readable medium, having stored thereon computer-readable instructions for determining location using context information from a Home Secure User Plane Location (SUPL) Location Platform (H-SLP), comprising instructions to:
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determine a coarse estimate of a location of a mobile device by; determining that the mobile device has entered an indoor environment responsive to the mobile device being unable to acquire at least three signals from a satellite positioning system, and accessing a position cache of the mobile device to obtain a previously determined location of the mobile device; send a request to the H-SLP for indoor context information, wherein the request comprises an indication of the location of a mobile device that comprises the coarse estimate of the location of the mobile device; receive the indoor context information from the H-SLP, wherein the indoor context information comprises an indoor map corresponding to locations of access points within an indoor environment; measure signal strength, timing, or combination thereof, of signals received from the access points; and determine the location of the mobile device, based at least in part, upon the indoor map corresponding to the locations of the access points within the indoor environment and upon the measured signal strength, timing, or combination thereof, of the signals received from the access points. - View Dependent Claims (23, 24, 25, 26, 27, 28)
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Specification