Portable electronic device positioning based on multipath characterization information associated with wireless network transmitting devices
First Claim
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1. A method comprising:
- determining an expected distance between a portable electronic device and a wireless transmitting device based, at least in part, on an initial position of said portable electronic device and a position of said wireless transmitting device;
determining an experienced distance between said portable electronic device and said wireless transmitting device based, at least in part, on at least one parameter associated with at least one wireless signal transmitted between said portable electronic device and said wireless transmitting device, wherein said at least one parameter associated with said at least one wireless signal comprises at least one of;
a propagation time, a code delay or shift, or a phase delay or shift;
characterizing said wireless transmitting device as being at least one of a multipath source or a non-multipath source with respect to a current position of said portable electronic device based, at least in part, on said expected distance and said experienced distance;
storing one or more electronic signals representing characterization information associated with at least said current position of said portable electronic device; and
determining a current estimated location of said portable electronic device based, at least in part, on wireless signals received from a plurality of wireless transmitting devices, wherein at least one of said plurality of wireless transmitting devices has been characterized through corresponding characterization information as being said multipath source with respect to said current position.
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Abstract
Techniques are provided which may be implemented in various methods and/or apparatuses to allow a portable electronic device to characterize and/or otherwise identify that certain wireless signals may be multipath signals and/or non-multipath signals. Given such signal/environment characterization information, a portable electronic device may select particular wireless signals for use in signal-based location estimation process and/or other communication processes.
7 Citations
47 Claims
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1. A method comprising:
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determining an expected distance between a portable electronic device and a wireless transmitting device based, at least in part, on an initial position of said portable electronic device and a position of said wireless transmitting device; determining an experienced distance between said portable electronic device and said wireless transmitting device based, at least in part, on at least one parameter associated with at least one wireless signal transmitted between said portable electronic device and said wireless transmitting device, wherein said at least one parameter associated with said at least one wireless signal comprises at least one of;
a propagation time, a code delay or shift, or a phase delay or shift;characterizing said wireless transmitting device as being at least one of a multipath source or a non-multipath source with respect to a current position of said portable electronic device based, at least in part, on said expected distance and said experienced distance; storing one or more electronic signals representing characterization information associated with at least said current position of said portable electronic device; and determining a current estimated location of said portable electronic device based, at least in part, on wireless signals received from a plurality of wireless transmitting devices, wherein at least one of said plurality of wireless transmitting devices has been characterized through corresponding characterization information as being said multipath source with respect to said current position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An apparatus comprising:
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means for determining an expected distance between a portable electronic device and a wireless transmitting device based, at least in part, on an initial position of said portable electronic device and a position of said wireless transmitting device; means for determining an experienced distance between said portable electronic device and said wireless transmitting device based, at least in part, on at least one parameter associated with at least one wireless signal transmitted between said portable electronic device and said wireless transmitting device, wherein said at least one parameter associated with said at least one wireless signal comprises at least one of;
a propagation time, a code delay or shift, or a phase delay or shift;means for characterizing said wireless transmitting device as being at least one of a multipath source or a non-multipath source with respect to a current position of said portable electronic device based, at least in part, on said expected distance and said experienced distance; means for storing one or more electronic signals representing characterization information associated with at least said current position of said portable electronic device; and means for determining a current estimated location of said portable electronic device based, at least in part, on wireless signals received from a plurality of wireless transmitting devices, wherein at least one of said plurality of wireless transmitting devices has been characterized through corresponding characterization information as being said multipath source with respect to said current position. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. An apparatus for use in a portable electronic device, the apparatus comprising:
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memory; a wireless interface; and at least one processing unit to; determine an expected distance between said portable electronic device and a wireless transmitting device based, at least in part, on an initial position of said portable electronic device and a position of said wireless transmitting device, wherein said at least one parameter associated with said at least one wireless signal comprises at least one of;
a propagation time, a code delay or shift, or a phase delay or shift;determine an experienced distance between said portable electronic device and said wireless transmitting device based, at least in part, on at least one parameter associated with at least one wireless signal transmitted between said portable electronic device and said wireless transmitting device via said wireless interface; characterize said wireless transmitting device as being at least one of a multipath source or a non-multipath source with respect to a current position of said portable electronic device based, at least in part, on said expected distance and said experienced distance; store one or more electronic signals representing characterization information associated with at least said current position of said portable electronic device to said memory; and determine a current estimated location of said portable electronic device based, at least in part, on wireless signals received from a plurality of wireless transmitting devices, wherein at least one of said plurality of wireless transmitting devices has been characterized through corresponding characterization information as being said multipath source with respect to said current position. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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36. An article comprising:
a non-transitory computer readable medium having stored thereon computer-executable instructions being executable by one or more processing units of a portable electronic device to; determine an expected distance between said portable electronic device and a wireless transmitting device based, at least in part, on an initial position of said portable electronic device and a position of said wireless transmitting device, wherein said at least one parameter associated with said at least one wireless signal comprises at least one of;
a propagation time, a code delay or shift, or a phase delay or shift;determine an experienced distance between said portable electronic device and said wireless transmitting device based, at least in part, on at least one parameter associated with at least one wireless signal transmitted between said portable electronic device and said wireless transmitting device; characterize said wireless transmitting device as being at least one of a multipath source or a non-multipath source with respect to a current position of said portable electronic device based, at least in part, on said expected distance and said experienced distance; store characterization information associated with at least said current position of said portable electronic device; and determine a current estimated location of said portable electronic device based, at least in part. on wireless signals received from a plurality of wireless transmitting devices, wherein at least one of said plurality of wireless transmitting devices has been characterized through corresponding characterization information as being said multipath source with respect to said current position. - View Dependent Claims (37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47)
Specification