Establishment of operational parameters for sensing measurement exchanges of a WLAN sensing measurement session

1 . An apparatus of a station (STA) configured for wireless local area network (WLAN) sensing, the apparatus comprising: processing circuitry; and memory, the processing circuitry to configure the STA to:

exchange sensing measurement request and response frames to establish operational parameters for one or more sensing measurement exchanges of a sensing measurement session;

perform the one or more sensing measurement exchanges, the one or more sensing measurement exchanges comprising null-data packet (NDP) transmissions and NDP receptions, the NDP transmissions and NDP receptions comprising NDPs configured in accordance with the operation parameters established for the sensing measurement session; and

estimate features of objects in an area of interest based on sensing measurements obtained during the one or more sensing measurement exchanges.

2 . The apparatus of claim 1 , wherein the sensing measurements comprise measurements of channel state information (CSI), and

wherein the processing circuitry is configured to decode one or more sensing measurement reports comprising an indication of variation of the CSI.

3 . The apparatus of claim 2 , wherein in response to the STA operating as a sensing initiator in the sensing measurement session, the processing circuitry is configured to:

encode a Sensing Measurement Request frame for transmission to other STA operating as a sensing responder, the Sensing Measurement Request frame encoded to include requested sensing measurement session parameters for the one or more sensing measurement exchanges of the sensing measurement session; and

decode a Sensing Measurement Response frame received from the other STA in response to transmission of the Sensing Measurement Request frame,

wherein the Sensing Measurement Response frame indicates SUCCESS in response to the sensing responder accepting the requested sensing measurement session parameters.

4 . The apparatus of claim 3 , wherein the Sensing Measurement Response frame indicates a rejection with suggested changes in response to the sensing responder declining the requested sensing measurement session parameters and includes proposed sensing measurement session parameters in the Sensing Measurement Response frame.

5 . The apparatus of claim 4 , wherein the Sensing Measurement Response frame indicates a rejection in response to the sensing responder declining the requested sensing measurement session parameters without including proposed sensing measurement session parameters in the Sensing Measurement Response frame.

6 . The apparatus of claim 5 , wherein to exchange sensing capabilities, the processing circuitry is configured to decode a sensing capabilities element received from the other STA, the sensing capabilities element including sensing capabilities of the other STA,

wherein in response to the other STA being an unassociated STA, the sensing capabilities element is received in a sensing measurement query frame, and

wherein in response to the other STA being an associated STA, the sensing capabilities element is received in an association request frame.

7 . The apparatus of claim 6 , wherein the processing circuitry is configured to encode the Sensing Measurement Request frame to include a Sensing Measurement Parameters Element to indicate the requested sensing measurement session parameters for the one or more sensing measurement exchanges of the sensing measurement session,

the Sensing Measurement Parameters Element to include a Sensing Measurement Parameters field and a Sensing Subelements field,

wherein the Sensing Measurement Sensing Parameters field is encoded to include a bandwidth (BW) field, one or more fields for a number of space-time streams (STS), one or more fields for a number of long-training field (LTF) repetitions, and a measurement session expiry field that indicates a time that the sensing measurement session is terminated.

8 . The apparatus of claim 7 , wherein the Sensing Subelements field is encoded to include a sub-element indicating whether one or more of the sensing measurement exchanges of the sensing measurement session is for a non-trigger based (non-TB) sensing measurement exchange or is for a trigger based (TB) sensing measurement exchange,

wherein for the TB sensing measurement exchange, the Sensing Subelements field is encoded to include at least an identify assigned to the sensing responder and an Availability Window field, and

wherein for the non-TB sensing measurement exchange, the Sensing Subelements field is encoded to include at least a minimum time between non-TB measurement exchanges in units of 100 microseconds.

9 . The apparatus of claim 8 , wherein the bandwidth field is encoded to indicate a requested bandwidth to be used for the NDPs of the NDP transmissions and NDP receptions comprising NDPs for one or more sensing measurement exchanges of the sensing measurement session.

10 . The apparatus of claim 9 , wherein the bandwidth field encoded to indicate one of 20 MHz, 40 MHz, 80 MHZ, 160 MHZ, and 320 MHz.

11 . A non-transitory computer-readable storage medium that stores instructions for execution by processing circuitry of a station (STA) configured for wireless local area network (WLAN) sensing, the processing circuitry to configure the STA to:

exchange sensing measurement request and response frames to establish operational parameters for one or more sensing measurement exchanges of a sensing measurement session;

perform the one or more of sensing measurement exchanges, the one or more sensing measurement exchanges comprising null-data packet (NDP) transmissions and NDP receptions, the NDP transmissions and NDP receptions comprising NDPs configured in accordance with the operation parameters established for the sensing measurement session; and

estimate features of objects in an area of interest based on sensing measurements obtained during the one or more sensing measurement exchanges.

12 . The non-transitory computer-readable storage medium of claim 11 , wherein the sensing measurements comprise measurements of channel state information (CSI), and

wherein the processing circuitry is configured to decode one or more sensing measurement reports comprising an indication of variation of the CSI.

13 . The non-transitory computer-readable storage medium of claim 12 , wherein in response to the STA operating as a sensing initiator in the sensing measurement session, the processing circuitry is configured to:

encode a Sensing Measurement Request frame for transmission to other STA operating as a sensing responder, the Sensing Measurement Request frame encoded to include requested sensing measurement session parameters for the one or more sensing measurement exchanges of the sensing measurement session; and

decode a Sensing Measurement Response frame received from the other STA in response to transmission of the Sensing Measurement Request frame,

wherein the Sensing Measurement Response frame indicates SUCCESS in response to the sensing responder accepts accepting the requested sensing measurement session parameters.

14 . The non-transitory computer-readable storage medium of claim 13 , wherein the Sensing Measurement Response frame indicates a rejection with suggested changes in response to the sensing responder declining the requested sensing measurement session parameters for the one or more sensing measurement exchanges and includes proposed sensing measurement session parameters for the one or more sensing measurement exchanges in the Sensing Measurement Response frame.

15 . The non-transitory computer-readable storage medium of claim 14 , wherein the Sensing Measurement Response frame indicates a rejection in response to the sensing responder not accepting the requested sensing measurement session parameters without including proposed sensing measurement session parameters in the Sensing Measurement Response frame.

16 . The non-transitory computer-readable storage medium of claim 15 , wherein to exchange sensing capabilities, the processing circuitry is configured to decode a sensing capabilities element received from the other STA, the sensing capabilities element including sensing capabilities of the other STA,

wherein in response to the other STA being an unassociated STA, the sensing capabilities element is received in a sensing measurement query frame, and

wherein in response to the other STA being an associated STA, the sensing capabilities element is received in an association request frame.

17 . The non-transitory computer-readable storage medium of claim 16 , wherein the processing circuitry is configured to encode the Sensing Measurement Request frame to include a Sensing Measurement Parameters Element to indicate the requested sensing measurement session parameters for the one or more sensing measurement exchanges of the sensing measurement session,

the Sensing Measurement Parameters Element to includes a Sensing Measurement Parameters field and a Sensing Subelements field,

wherein the Sensing Measurement Sensing Parameters field is encoded to include a bandwidth (BW) field, one or more fields for a number of space-time streams (STS), one or more fields for a number of long-training field (LTF) repetitions, and a measurement session expiry field that indicates a time that the sensing measurement session is terminated.

18 . The non-transitory computer-readable storage medium of claim 17 , wherein the Sensing Subelements field is encoded to include a sub-element indicating whether one or more of the sensing measurement exchanges of the sensing measurement session is for a non-trigger based (non-TB) sensing measurement exchange or is for a trigger based (TB) sensing measurement exchange,

wherein for the TB sensing measurement exchange, the Sensing Subelements field is encoded to include at least an identify assigned to the sensing responder and an Availability Window field, and

wherein for the non-TB sensing measurement exchange, the Sensing Subelements field is encoded to include at least a minimum time between non-TB measurement exchanges in units of 100 microseconds.

19 . A method performed by processing circuitry of a station (STA) configured for wireless local area network (WLAN) sensing, the method comprising:

exchanging sensing measurement request and response frames to establish operational parameters for one or more sensing measurement exchanges of a sensing measurement session;

performing the one or more of sensing measurement exchanges, the one or more sensing measurement exchanges comprising null-data packet (NDP) transmissions and NDP receptions, the NDP transmissions and NDP receptions comprising NDPs configured in accordance with the operation parameters established for the sensing measurement session; and

estimating features of objects in an area of interest based on sensing measurements obtained during the one or more sensing measurement exchanges.

20 . The method of claim 19 , wherein the sensing measurements comprise measurements of channel state information (CSI), and

wherein method further comprises decoding one or more sensing measurement reports comprising an indication of variation of the CSI.