Methods and systems for enhanced round trip time (RTT) exchange
First Claim
Patent Images
1. A method comprising, at a first wireless transceiver device:
- receiving a fine timing measurement request message from a second wireless transceiver device, the fine timing measurement request message comprising at least one field specifying at least one physical signal characteristic of one or more fine timing measurement messages requested for transmission from the first wireless transceiver device in response to the fine timing measurement request message; and
in response to receipt of the fine timing measurement request message, transmitting one or more bursts of fine timing measurement messages to the second wireless transceiver device based, at least in part, on the at least one field, the one or more bursts of fine timing measurement messages utilized to calculate a round trip time (RTT) measurement for use in a positioning operation of the second wireless transceiver device.
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Abstract
Disclosed are systems, methods and devices for obtaining round trip time measurements for use in location based services. In particular implementations, a fine timing measurement request message wirelessly transmitted by a first transceiver device to a second transceiver device may permit additional processing features in computing or applying a signal round trip time measurement. Such a signal round trip time measurement may be used in positioning operations.
32 Citations
14 Claims
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1. A method comprising, at a first wireless transceiver device:
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receiving a fine timing measurement request message from a second wireless transceiver device, the fine timing measurement request message comprising at least one field specifying at least one physical signal characteristic of one or more fine timing measurement messages requested for transmission from the first wireless transceiver device in response to the fine timing measurement request message; and in response to receipt of the fine timing measurement request message, transmitting one or more bursts of fine timing measurement messages to the second wireless transceiver device based, at least in part, on the at least one field, the one or more bursts of fine timing measurement messages utilized to calculate a round trip time (RTT) measurement for use in a positioning operation of the second wireless transceiver device. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A first wireless transceiver device, comprising:
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a transceiver to transmit messages to and receive messages from a wireless communication network; and one or more processors to; obtain a fine timing measurement request message received at the transceiver from a second wireless transceiver device, the fine timing measurement request message comprising at least one field specifying at least one physical signal characteristic of one or more fine timing measurement messages requested for transmission from the first wireless transceiver device in response to the fine timing measurement request message; and in response to receipt of the fine timing request measurement message, initiate transmission of one or more bursts of fine timing measurement messages through the transceiver to the second wireless transceiver device based, at least in part, on the at least one field, the one or more bursts of fine timing measurement messages utilized to calculate a round trip time (RTT) measurement for use in a positioning operation of the second wireless transceiver device. - View Dependent Claims (8, 9, 10, 11, 12)
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13. An article comprising:
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a non-transitory storage medium comprising machine-readable instructions stored thereon which are executable by a special purpose computing apparatus of a first wireless transceiver device to; obtain a fine timing measurement request message received from a second wireless transceiver device, the fine timing measurement request message comprising at least one field specifying at least one physical signal characteristic of one or more fine timing measurement messages requested for transmission from the first wireless transceiver device in response to the fine timing measurement request message; and in response to the fine timing request measurement message, initiate transmission of one or more bursts of fine timing measurement messages to the second wireless transceiver device based, at least in part, on the at least one field, the one or more bursts of fine timing measurement messages utilized to calculate a round trip time (RTT) measurement for use in a positioning operation of the second wireless transceiver device.
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14. A first wireless transceiver device comprising:
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means for receiving a fine timing measurement request message from a second wireless transceiver device, the fine timing measurement request message comprising at least one field specifying at least one physical signal characteristic of one or more fine timing measurement messages requested for transmission from the first wireless transceiver device in response to the fine timing measurement request message; and means for transmitting one or more bursts of fine timing measurement messages to the second wireless transceiver device in response to receipt of the fine timing request measurement message based, at least in part, on the at least one field, the one or more bursts of fine timing measurement messages utilized to calculate a round trip time (RTT) measurement for use in a positioning operation of the second wireless transceiver device.
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Specification