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Changing a position determination scheme used by a user equipment during a transition between indoor and outdoor spaces relative to an enclosed environment

  • US 10,168,161 B2
  • Filed: 03/13/2013
  • Issued: 01/01/2019
  • Est. Priority Date: 10/22/2012
  • Status: Active Grant
First Claim
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1. A method of operating a user equipment (UE), comprising:

  • obtaining, by the UE, transition region information that characterizes a set of indoor-to-outdoor transition regions between an indoor space and an outdoor space relative to a given enclosed environment and a set of outdoor-to-indoor transition regions between the indoor space and the outdoor space relative to the given enclosed environment that is separate from the set of indoor-to-outdoor transition regions, wherein the set of indoor-to-outdoor transition regions is defined based on measurements that indicate an availability of an indoor positioning scheme based on a first wireless technology, wherein the set of indoor-to-outdoor transition regions includes a plurality of non-overlapping indoor-to-outdoor transition regions and the set of outdoor-to-indoor transition regions includes a plurality of non-overlapping outdoor-to-indoor transition regions, wherein each non-overlapping indoor-to-outdoor transition region includes and/or is in proximity to a different point of exit out of the given enclosed environment, wherein each non-overlapping outdoor-to-indoor transition region includes and/or is in proximity to a different point of entry into the given enclosed environment, and wherein at least one of the different points of exit is the same as at least one of the different points of entry;

    tracking, by the UE, a location of the UE using the indoor positioning scheme while the UE is operating within the indoor space;

    detecting, by the UE based on the location tracking using the indoor positioning scheme, that the UE has entered into a given indoor-to-outdoor transition region from the set of indoor-to-outdoor transition regions; and

    initiating, by the UE, location tracking of the UE using an outdoor positioning scheme based on a second wireless technology that is different from the first wireless technology in response to the detection.

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