Hybrid positioning mechanism for wireless communication devices
First Claim
1. A method comprising:
- detecting, at a communication device of a wireless communication network, a request message and a corresponding response message exchanged between a master access point of the wireless communication network and a target access point of the wireless communication network;
determining, at the communication device, time difference of arrival (TDOA) information based, at least in part, on the request message and the corresponding response message exchanged between the master access point and the target access point;
receiving, from the master access point, an indication of round-trip time (RTT) measurement information determined by the master access point based, at least in part, on the request message and the corresponding response message exchanged between the master access point and the target access point; and
calculating position information associated with the communication device based, at least in part, on the TDOA information and the RTT measurement information.
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Abstract
A wireless communication device can determine its position in accordance with a hybrid positioning mechanism to minimize bandwidth and power consumption at the wireless communication device. The wireless communication device can detect one or more request messages and one or more corresponding response messages exchanged between a master access point and one or more target access points, and can accordingly determine TDOA information associated with the one or more target access points. The wireless communication device can receive, from the master access point, RTT measurement information determined by the master access point based, at least in part, on the one or more request messages and the one or more corresponding response messages exchanged between the master access point and the one or more target access points. The wireless communication device can calculate its position information based, at least in part, on the TDOA information and the RTT measurement information.
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Citations
23 Claims
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1. A method comprising:
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detecting, at a communication device of a wireless communication network, a request message and a corresponding response message exchanged between a master access point of the wireless communication network and a target access point of the wireless communication network; determining, at the communication device, time difference of arrival (TDOA) information based, at least in part, on the request message and the corresponding response message exchanged between the master access point and the target access point; receiving, from the master access point, an indication of round-trip time (RTT) measurement information determined by the master access point based, at least in part, on the request message and the corresponding response message exchanged between the master access point and the target access point; and calculating position information associated with the communication device based, at least in part, on the TDOA information and the RTT measurement information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A communication device comprising:
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a processor; a network interface coupled with the processor; and a positioning unit coupled with the processor and with the network interface, the positioning unit operable to; detect a request message and corresponding response message exchanged between a master access point of a wireless communication network and a target access point of the wireless communication network; determine time difference of arrival (TDOA) information based, at least in part, on the request message and the corresponding response message exchanged between the master access point and the target access point; receive, from the master access point, an indication of round-trip time (RTT) measurement information determined by the master access point based, at least in part, on the request message and the corresponding response message exchanged between the master access point and the target access point; and calculate position information associated with the communication device based, at least in part, on the TDOA information and the RTT measurement information. - View Dependent Claims (16, 17, 18, 19)
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20. One or more machine-readable storage media having instructions stored therein, which when executed by one or more processors causes the one or more processors to perform operations that comprise:
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detecting, at a communication device of a wireless communication network, a request message and a corresponding response message exchanged between a master access point of the wireless communication network and a target access point of the wireless communication network; determining time difference of arrival (TDOA) information based, at least in part, on the request message and the corresponding response message exchanged between the master access point and the target access point; receiving, from the master access point, an indication of round-trip time (RTT) measurement information determined by the master access point based, at least in part, on the request message and the corresponding response message exchanged between the master access point and the target access point; and calculating position information associated with the communication device based, at least in part, on the TDOA information and the RTT measurement information. - View Dependent Claims (21, 22, 23)
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Specification