Polled time-of-flight response
First Claim
Patent Images
1. An apparatus including circuitry to cause an initiating station to:
- transmit a time of flight (ToF) measurement request to a responding station, the ToF measurement request comprising a measurement request bit indicating a request to perform a ToF measurement;
receive an acknowledgment (ACK) from the responding station;
receive a response after reception of the ACK, the response including a status field to indicate if the request to perform the ToF measurement is accepted or not accepted;
receive ToF measurements from the responding station, the ToF measurements in a time of arrival (ToA) field and a time of departure (ToD) field; and
trigger a calculation for a determination of a location of the initiating station based on the ToF measurements.
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Abstract
Embodiments of a communication station and method for time-of-flight (ToF) location determination in a wireless network are generally described herein. In some embodiments, a responding communication station receives a ToF measurement request. The responding communication station transmits an acknowledgment of the ToF measurement request. The responding communication station also transmits a response to the ToF measurement request that includes an indication of a time period for an initiating communication station to poll the responding communication station for a ToF result.
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Citations
14 Claims
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1. An apparatus including circuitry to cause an initiating station to:
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transmit a time of flight (ToF) measurement request to a responding station, the ToF measurement request comprising a measurement request bit indicating a request to perform a ToF measurement; receive an acknowledgment (ACK) from the responding station; receive a response after reception of the ACK, the response including a status field to indicate if the request to perform the ToF measurement is accepted or not accepted; receive ToF measurements from the responding station, the ToF measurements in a time of arrival (ToA) field and a time of departure (ToD) field; and trigger a calculation for a determination of a location of the initiating station based on the ToF measurements. - View Dependent Claims (2, 3, 4, 5)
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6. An apparatus including circuitry to cause a responding station to:
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receive a time of flight (ToF) measurement request from an initiating station, the ToF measurement request comprising a measurement request bit indicating a request to perform a ToF measurement; transmit an acknowledgment to the initiating station; transmit a response after transmission of the acknowledgment, the response including a status field to indicate if the request to perform the ToF measurement is accepted or not accepted; and transmit a ToF measurement including a time of departure (ToD) measurement, and a time of arrival (ToA) measurement, the ToA measurement comprising a measurement of a time of arrival of an acknowledgment from the initiating station. - View Dependent Claims (7, 8, 9)
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10. A non-transitory computer-readable storage medium that stores instructions for execution by processing circuitry of a responding station to perform operations to configure the responding station to:
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process a time of flight (ToF) measurement request received from an initiating station, the ToF measurement request comprising a measurement request bit indicating a request to perform a ToF measurement; transmit, to the initiating station, an acknowledgment (ACK); transmit a response after transmission of the ACK, the response including a status field to indicate if the request to perform the ToF measurement is accepted or not accepted; and transmit a ToF measurement including a time of departure (ToD) measurement and a time of arrival (ToA) measurement, the ToA measurement comprising a measurement of a time of arrival of an ACK from the initiating station. - View Dependent Claims (11)
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12. A non-transitory computer-readable storage medium that stores instructions for execution by processing circuitry of an initiating station to perform operations to cause the initiating station to:
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transmit, to a responding station, a time of flight (ToF) measurement request, the ToF measurement request comprising a measurement request bit indicating a request to perform a ToF measurement; receive, from the responding station, an acknowledgement (ACK); receive a response after reception of the ACK, the response including a status field to indicate if the request to perform the ToF measurement is accepted or not accepted; receive from the responding station ToF measurements in a time of arrival (ToA) field and a time of departure (ToD) field; and trigger a calculation for a determination of a location of the initiating station based on the ToF measurements. - View Dependent Claims (13, 14)
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Specification