SYSTEM AND METHOD FOR COOPERATIVE POSITIONING
First Claim
1. A mobile wireless device, comprising:
- a navigation satellite receiver configured to receive positioning signals from positioning satellites;
a wireless local area network (WLAN) transceiver; and
a cooperative positioning system configured to;
receive positioning measurements from a cooperating mobile wireless device via the WLAN transceiver, the received positioning measurements derived from satellite positioning signals received by the cooperating mobile wireless device;
determine a position of the mobile wireless device based on the positioning measurements received from the cooperating mobile wireless device, positioning measurements provided by the navigation satellite receiver, and a focal measurement that is a function of at least one of the position and the clock bias of both the mobile wireless device and the cooperating mobile wireless device.
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Accused Products
Abstract
Apparatus and method for cooperatively positioning a mobile wireless device. In one embodiment a mobile wireless device includes a navigation satellite receiver, a WLAN transceiver, and a cooperative positioning system. The navigation satellite receiver is configured to receive positioning signals from positioning satellites. The cooperative positioning system is configured to receive positioning measurements from a cooperating mobile wireless device via the WLAN transceiver. The received positioning measurements are derived from satellite positioning signals received by the cooperating mobile wireless device. The cooperative positioning system is also configured to determine a position of the mobile wireless device based on the positioning measurements received from the cooperating mobile wireless device, positioning measurements provided by the navigation satellite receiver, and a focal measurement that is a function of at least one of the position and the clock bias of both the mobile wireless device and the cooperating mobile wireless device.
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Citations
23 Claims
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1. A mobile wireless device, comprising:
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a navigation satellite receiver configured to receive positioning signals from positioning satellites; a wireless local area network (WLAN) transceiver; and a cooperative positioning system configured to; receive positioning measurements from a cooperating mobile wireless device via the WLAN transceiver, the received positioning measurements derived from satellite positioning signals received by the cooperating mobile wireless device; determine a position of the mobile wireless device based on the positioning measurements received from the cooperating mobile wireless device, positioning measurements provided by the navigation satellite receiver, and a focal measurement that is a function of at least one of the position and the clock bias of both the mobile wireless device and the cooperating mobile wireless device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method, comprising:
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receiving, by a first mobile wireless device, positioning signals transmitted by positioning satellites; deriving, by the first mobile wireless device, positioning measurements from the positioning signals; receiving, by the first mobile wireless device, positioning measurements from a second mobile wireless device via a wireless local area network; determining, by the first mobile wireless device, a position of the first mobile wireless device based on the positioning measurements from the second mobile wireless device, the positioning measurements derived by the first mobile wireless device, and a focal measurement that is a function of at least one of the position and the clock bias of both the first mobile wireless device and the second mobile wireless device. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A wireless device positioning system, comprising:
a processor configured to; receive satellite positioning measurements from a host wireless device that includes the processor; receive satellite positioning measurements from a cooperating wireless device; determine a position of the host wireless device based on the positioning measurements from the cooperating mobile wireless device, the positioning measurements from the host wireless device, and a focal measurement that is a function of at least one of the position and the clock bias of both the host wireless device and the cooperating mobile wireless device. - View Dependent Claims (18, 19, 20, 21, 22, 23)
Specification