Relative positioning
First Claim
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1. A method comprising:
- requesting, by an apparatus, and receiving, by the apparatus, from a first device information on barometric pressure at said first device;
converting, by the apparatus, said information on barometric pressure at said first device and information on barometric pressure at a second device into a difference in altitude between said first device and said second device, said first device and said second device being physically unconnected; and
using, by the apparatus, said difference in altitude between said first device and said second device in determining a position of said first device relative to said second device.
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Abstract
For supporting a relative positioning, information on barometric pressure at a first device and information on barometric pressure at a second device is converted into a difference in altitude between the first device and the second device. The difference in altitude between the first device and the second device is then used in determining a position of the first device relative to the second device.
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Citations
20 Claims
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1. A method comprising:
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requesting, by an apparatus, and receiving, by the apparatus, from a first device information on barometric pressure at said first device; converting, by the apparatus, said information on barometric pressure at said first device and information on barometric pressure at a second device into a difference in altitude between said first device and said second device, said first device and said second device being physically unconnected; and using, by the apparatus, said difference in altitude between said first device and said second device in determining a position of said first device relative to said second device. - View Dependent Claims (2, 3)
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4. An apparatus comprising a processor and a memory including computer program code, the at least one memory and the computer program code configured to, with the processor, cause an apparatus at least to perform:
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request and receive from a first device information on barometric pressure at said first device; convert said information on barometric pressure at said first device and information on barometric pressure at a second device into a difference in altitude between said first device and said second device, said first device and said second device being physically unconnected; and said processor being configured to use said difference in altitude between said first device and said second device in determining a position of said first device relative to said second device. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A non-transitory computer readable medium storing a computer program code, which causes an apparatus to perform the following when executed by a processor:
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requesting and receiving from a first device information on barometric pressure at said first device; converting said information on barometric pressure at said first device and information on barometric pressure at a second device into a difference in altitude between said first device and said second device, said first device and said second device being physically unconnected; and using said difference in altitude between said first device and said second device in determining a position of said first device relative to said second device. - View Dependent Claims (18, 19)
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20. An apparatus comprising:
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means, at least partly implemented in hardware, for requesting and receiving from a first device information on barometric pressure at said first device; means, at least partly implemented in hardware, for converting said information on barometric pressure at said first device and information on barometric pressure at a second device into a difference in altitude between said first device and said second device, said first device and said second device being physically unconnected; and means, at least partly implemented in hardware, for using said difference in altitude between said first device and said second device in determining a position of said first device relative to said second device.
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Specification