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

Patent metadata

Field	Value
Publication number	US-10168161-B2
Application number	US-201313801509-A
Country	US
Kind code	B2
Filing date	Mar 13, 2013
Priority date	Oct 22, 2012
Publication date	Jan 1, 2019
Grant date	Jan 1, 2019

Abstract

In an embodiment, a user equipment (UE) tracks its location using a first positioning scheme (PS) (e.g., an indoor PS or outdoor PS) while operating inside or outside of an enclosed environment, whereby the UE maintains transition region information related to the enclosed environment that characterizes one or more outdoor-to-indoor (OI) and/or indoor-to-outdoor (IO) transition regions of the enclosed environment. If the UE determines it has entered a transition region of the enclosed environment based on its location tracking using the first PS, the UE begins to track its location using a second PS. When the quality of the second PS rises above a threshold (e.g., such as the UE moves further inside or outside of the enclosed environment), the UE can switch to the second PS and turn off the first PS.

First claim

What is claimed is:

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.

2. The method of claim 1 , wherein the UE continues the location tracking using the indoor positioning scheme after the location tracking using the outdoor positioning scheme is initiated.

3. The method of claim 2 , further comprising:
determining that a quality associated with the outdoor positioning scheme is above a quality threshold; and
stopping the location tracking using the indoor positioning scheme while continuing the location tracking using the outdoor positioning scheme in response to the determination.

4. The method of claim 2 , further comprising:
determining, based on the location tracking using the indoor positioning scheme, the location tracking using the outdoor positioning scheme or a combination thereof, that the UE has transitioned from the given indoor-to-outdoor transition region back to the indoor space; and
stopping the location tracking using the outdoor positioning scheme while continuing or resuming the location tracking using the indoor positioning scheme in response to the determination.

5. The method of claim 1 , further comprising:
stopping the location tracking using the indoor positioning scheme in conjunction with initiating the location tracking using the outdoor positioning scheme.

6. The method of claim 1 , wherein the outdoor positioning scheme corresponds to a satellite positioning system (SPS) scheme and the indoor positioning scheme corresponds to a WiFi-based positioning scheme based on WiFi access points (APs) serving the indoor space.

7. The method of claim 1 , further comprising:
reporting location information that characterizes a current location of the UE to a server,
wherein the obtaining obtains the transition region information from the server based on an association between the reported location information and a location of the given enclosed environment.

8. The method of claim 1 , wherein the location tracking of the UE using the outdoor positioning scheme is initiated based on the UE's detected entry into the given indoor-to-outdoor transition region irrespective of a quality level associated with the indoor or outdoor positioning schemes.

9. A method of operating a user equipment (UE), comprising:
obtaining, by the UE, transition region information that characterizes a set of outdoor-to-indoor transition regions between an indoor space and an outdoor space relative to a given enclosed environment and a set of indoor-to-outdoor transition regions between the indoor space and the outdoor space relative to the given enclosed environment that is separate from the set of outdoor-to-indoor transition regions, wherein the set of outdoor-to-indoor 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 outdoor-to-indoor transition regions includes a plurality of non-overlapping outdoor-to-indoor transition regions and the set of indoor-to-outdoor transition regions includes a plurality of non-overlapping indoor-to-out-door transition regions, 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, 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, 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 an outdoor positioning scheme based on a second wireless technology that is different than the first wireless technology while the UE is operating within the outdoor space;
detecting, by the UE based on the location tracking using the outdoor positioning scheme, that the UE has entered into a given outdoor-to-indoor transition region from the set of outdoor-to-indoor transition regions; and
initiating, by the UE, location tracking of the UE using the indoor positioning scheme in response to the detection.

10. The method of claim 9 , wherein the UE continues the location tracking using the outdoor positioning scheme after the location tracking using the indoor positioning scheme is initiated.

11. The method of claim 10 , further comprising:
determining that a quality associated with the indoor positioning scheme is above a quality threshold; and
stopping the location tracking using the outdoor positioning scheme while continuing the location tracking using the indoor positioning scheme in response to the determination.

12. The method of claim 10 , further comprising:
determining, based on the location tracking using the indoor positioning scheme, the location tracking using the outdoor positioning scheme or a combination thereof, that the UE has transitioned from the given outdoor-to-indoor transition region back to the outdoor space; and
stopping the location tracking using the indoor positioning scheme while continuing or resuming the location tracking using the outdoor positioning scheme in response to the determination.

13. The method of claim 9 , further comprising:
stopping the location tracking using the outdoor positioning scheme in conjunction with initiating the location tracking using the indoor positioning scheme.

14. The method of claim 9 , wherein the outdoor positioning scheme corresponds to a satellite positioning system (SPS) scheme and the indoor positioning scheme corresponds to a WiFi-based positioning scheme based on WiFi access points (APs) serving the indoor space.

15. The method of claim 9 , further comprising:
reporting location information that characterizes a current location

Assignees

• Qualcomm Inc

Inventors

• Park Young Shin

Classifications

• G01S5/015

  between indoor and outdoor environments · CPC title

• G01C21/206 Primary

  specially adapted for indoor navigation · CPC title

• G01S5/0045

  Transmission from base station to mobile station (G01S5/009 takes precedence) · CPC title

• G01S5/0294

  Trajectory determination or predictive filtering, e.g. target tracking or Kalman filtering · CPC title

• G01S19/48

  by combining or switching between position solutions derived from the satellite radio beacon positioning system and position solutions derived from a further system · CPC title