Enhanced positioning assistance data for reduced signaling
First Claim
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1. A method for determining a location estimate of a mobile device, the method comprising:
- receiving extended assistance data, while in a first geographical area, wherein the extended assistance data comprises assistance data applicable in a second geographical area and inapplicable in the first geographical area;
saving the extended assistance data to memory;
obtaining location information, while in the second geographical area, using the assistance data applicable in the second geographical area; and
providing the location information to determine the location estimate of the mobile device.
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Abstract
Apparatus and methods for determining a location estimate of a mobile device based on an extended set of assistance data are presented. The extended assistance data includes assistance data for base stations, such as cellular base stations and access points, not expected to be viewable by the mobile device in a (current) first geographical area but expected to be viewable by the mobile device in a (future) second geographical area. By seeding the mobile device with assistance data expected to be useful in the future, the network reduces messaging between the network and mobile device and battery consumption by the mobile device.
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Citations
36 Claims
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1. A method for determining a location estimate of a mobile device, the method comprising:
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receiving extended assistance data, while in a first geographical area, wherein the extended assistance data comprises assistance data applicable in a second geographical area and inapplicable in the first geographical area; saving the extended assistance data to memory; obtaining location information, while in the second geographical area, using the assistance data applicable in the second geographical area; and providing the location information to determine the location estimate of the mobile device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 36)
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18. A mobile device for determining a location estimate of the mobile device, the mobile device comprising a base station receiver, a base station transmitter, a processor and memory comprising code to:
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receive extended assistance data, while in a first geographical area, wherein the extended assistance data comprises assistance data applicable in a second geographical area and inapplicable in the first geographical area; save the extended assistance data to memory; obtain location information, while in the second geographical area, using the assistance data applicable in the second geographical area; and provide the location information to determine the location estimate of the mobile device. - View Dependent Claims (19, 20, 21, 22, 23)
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24. A mobile device for determining a location estimate of the mobile device, the mobile device comprising:
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means for receiving extended assistance data, while in a first geographical area, wherein the extended assistance data comprises assistance data applicable in a second geographical area and inapplicable in the first geographical area; means for saving the extended assistance data to memory; means for obtaining location information, while in the second geographical area, using the assistance data applicable in the second geographical area; and means for providing the location information to determine the location estimate of the mobile device.
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25. A mobile device for determining a location estimate of the mobile device, the mobile device comprising a processor and memory comprising instructions to:
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receive extended assistance data, while in a first geographical area, wherein the extended assistance data comprises assistance data applicable in a second geographical area and inapplicable in the first geographical area; save the extended assistance data to memory; obtain location information, while in the second geographical area, using the assistance data applicable in the second geographical area; and provide the location information to determine the location estimate of the mobile device.
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26. A non-transitory computer-readable storage medium comprising program code stored thereon for a mobile device for determining a location estimate of the mobile device, the program code including code to:
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receive extended assistance data, while in a first geographical area, wherein the extended assistance data comprises assistance data applicable in a second geographical area and inapplicable in the first geographical area; save the extended assistance data to memory; obtain location information, while in the second geographical area, using the assistance data applicable in the second geographical area; and provide the location information to determine the location estimate of the mobile device.
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27. A method of preparing extended assistance data, by a network, for a mobile device in a first geographical area, the method comprising:
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determining base stations to identify thereby defining a second geographical area; preparing the extended assistance data, wherein the extended assistance data comprises assistance data applicable in the second geographical area and known inapplicable in the first geographical area; and sending the extended assistance data to the mobile device while the mobile device is in the first geographical area. - View Dependent Claims (28, 29, 30, 31, 32)
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33. A network entity for preparing extended assistance data for a mobile device in a first geographical area, the network entity comprising:
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means for determining base stations to identify thereby defining a second geographical area; means for preparing the extended assistance data, wherein the extended assistance data comprises assistance data applicable in the second geographical area and known inapplicable in the first geographical area; and means for sending the extended assistance data to the mobile device while the mobile device is in the first geographical area.
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34. A network entity for preparing extended assistance data for a mobile device in a first geographical area, the network entity comprising a processor and memory comprising code to:
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determine base stations to identify, for the mobile device in a first geographical area, thereby defining a second geographical area; prepare the extended assistance data, wherein the extended assistance data comprises assistance data applicable in the second geographical area and known inapplicable in the first geographical area; and send the extended assistance data to the mobile device while the mobile device is in the first geographical area.
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35. A non-transitory computer-readable storage medium comprising program code stored thereon for a network entity for determining a location estimate of a mobile device, the program code including code to:
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determine base stations to identify, for the mobile device in a first geographical area, thereby defining a second geographical area; prepare the extended assistance data, wherein the extended assistance data comprises assistance data applicable in the second geographical area and known inapplicable in the first geographical area; and send the extended assistance data to the mobile device while the mobile device is in the first geographical area.
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Specification