Abstract: Systems and methods for Wi-Fi sensing are provided. Wi-Fi sensing methods may be carried out by a networking device configured to operate as an access point (AP) within a mesh network. The AP may be configured to identify a reciprocal AP with which the AP has a reciprocal wireless link. The AP may be configured to determine a first AP role determination metric associated with the AP and receive a second AP role determination metric associated with the reciprocal AP. The AP may be configured to compare the first AP role determination metric to the second AP role determination metric to allocate a first sensing role to the AP based on the comparing and allocate a second sensing role to the reciprocal AP based on the comparing.

Abstract: Systems and methods for Wi-Fi network evaluation are provided. The methods may be carried out by a networking device operating within a Wi-Fi network including a plurality of stations and a plurality of access points. The networking device may identify a communication link topology of the Wi-Fi network defined by a plurality of communication links between an associated pair of stations and access points. The networking device may receive a plurality of sensing measurements measured according to the communication link topology. A proximity link topology of the Wi-Fi network may be determined based on the plurality of sensing measurements and used to adjust the Wi-Fi network.

Abstract: Systems and methods for Wi-Fi sensing using UL-OFDMA are provided. Wi-Fi sensing systems include sensing devices and sensing transmitters configured to communicate through radio-frequency signals. Initially, first channel resources are allocated to first expected transmissions from the sensing transmitters and first sensing trigger message to trigger first series of sensing transmissions from the sensing transmitters is transmitted. Further, a first series of sensing transmissions is received, and the first series of sensing measurements are generated. Thereafter, identification of feature of interest is obtained and a selection of sensing transmitters is determined. Second channel resources are allocated to second expected transmissions from the selection of sensing transmitters. A second sensing trigger message to trigger a second series of sensing transmissions from the selection of the sensing transmitters is provided.

Abstract: A method and system for Wi-Fi sensing are provided. A networking device is configured to operate as a sensing responder and includes at least one processor configured to execute instructions. The instructions cause the networking device to receive a sensing transmission transmitted from a sensing transmitter, perform a sensing measurement on the sensing transmission and obtain a received noise power measurement. The received noise power measurement is associated with the sensing measurement; and the sensing measurement and the received noise power measurement are transferred to a sensing initiator.

Abstract: Systems and methods for accommodating flexibility in sensing transmissions are provided. Wi-Fi sensing systems include sensing devices and remote devices configured to communicate through radio-frequency signals. Initially, a sensing device transmits a sensing configuration message to a remote device. The sensing device receives a sensing configuration response message in response to the sensing configuration message. In an example, the sensing configuration response message may include a transmission capability indication associated with the remote device. The transmission capability indication includes a flexibility indication that the remote device supports flexibility.

Abstract: Systems and methods for Wi-Fi sensing are provided. Wi-Fi sensing systems include sensing devices and remote devices configured to communicate through radio-frequency signals. Sensing devices and remote devices are configured to communicate with one another to establish sensing transmission configurations through established protocols. Sensing devices described herein are configured to provide Wi-Fi sensing measurements based on the reception of messages transmitted from remote devices according to established configurations.

Abstract: Systems and methods for accommodating flexibility in sensing transmissions are provided. Wi-Fi sensing systems include sensing devices and remote devices configured to communicate through radio-frequency signals. Initially, a sensing device transmits a sensing configuration message to a remote device. The sensing device receives a sensing configuration response message in response to the sensing configuration message. In an example, the sensing configuration response message may include a transmission capability indication associated with the remote device. The transmission capability indication includes a flexibility indication that the remote device supports flexibility.

Abstract: Systems and methods for Wi-Fi sensing using UL-OFDMA are provided. Wi-Fi sensing systems include sensing devices and sensing transmitters configured to communicate through radio-frequency signals. Initially, first channel resources are allocated to first expected transmissions from the sensing transmitters and first sensing trigger message to trigger first series of sensing transmissions from the sensing transmitters is transmitted. Further, a first series of sensing transmissions is received, and the first series of sensing measurements are generated. Thereafter, identification of feature of interest is obtained and a selection of sensing transmitters is determined. Second channel resources are allocated to second expected transmissions from the selection of sensing transmitters. A second sensing trigger message to trigger a second series of sensing transmissions from the selection of the sensing transmitters is provided.

Abstract: Systems and methods for Wi-Fi sensing by networking devices are provided. A sensing transmitter is configured to obtain timing information from an unassociated access point The sending transmitter is further configured to generate local timing information, according to the timing information and to receive a transmission request from the unassociated access point, the transmission request including a timing information update. The timing information update is used to update the local timing information. A transmission response including a timestamp based on updated local timing information is sent responsive to a transmission request.

Abstract: A method includes obtaining a set of motion indicator values associated with a time frame. The set of motion indicator values indicating motion detected from wireless links in a wireless communication network during the time frame. The method also includes generating a probability vector comprising values for the connected wireless communication devices and generating spatial coordinates for respective wireless communication devices. The spatial coordinates for each wireless communication device representing a location of the wireless communication device in space. The method also includes modifying the probability vector based on the spatial coordinates of each wireless communication device to generate a modified probability vector representing a probability of motion at the connected wireless communication device during the time frame. The method also includes using the modified probability vector to localize motion relative to the wireless communication device during the time frame.

Abstract: Systems and methods for Wi-Fi sensing are provided. Wi-Fi sensing systems include sensing devices and remote devices configured to communicate through radio-frequency signals. Sensing devices and remote devices are configured to communicate with one another to establish sensing transmission configurations through established protocols. Sensing devices described herein are configured to provide Wi-Fi sensing measurements based on the reception of messages transmitted from remote devices according to established configurations.

Abstract: In a general aspect, a set of observed frequency-domain channel responses is filtered to remove noise or distortions that are not related to changes in the physical environment. In some aspects, for each frequency-domain channel response, a time-domain channel response is generated based on the frequency-domain channel response; and a filtered time-domain channel response is generated based on a constraint applied to the time-domain channel response. Additionally, a reconstructed frequency-domain channel response is generated based on the filtered time-domain channel response. An error signal is also generated, and a determination is made as to whether the error signal satisfies a criterion. The error signal can be indicative of a difference between the frequency-domain channel response and the reconstructed frequency-domain channel response. In response to each of the error signals satisfying the criterion, motion of an object in a space is detected based on the set of frequency-domain channel responses.

Abstract: Systems and methods for Wi-Fi sensing are provided. Wi-Fi systems include a plurality of networking devices including a plurality of sensing capable devices and an access point. The Wi-Fi systems are configured for identifying a candidate set of the plurality of networking devices, establishing a plurality of candidate sensing links between the plurality of candidate devices and the access point, monitoring sensing transmissions transmitted via the plurality of candidate sensing links, identifying a sensing link set according to the sensing transmissions, establishing the plurality of selected sensing links between selected devices of the plurality of candidate devices and the access point. Wi-Fi systems are further configured for updating sensing links according to detected sensing transmissions.

Abstract: Systems and methods for Wi-Fi sensing are provided. A method for Wi-Fi sensing carried out by a sensing decision unit in operation on at least one processor configured to execute instructions. Measured channel state information (M-CSI) representing a sensing measurement and receiver front end state information (RFE-SI) are received. According to the RFE-SI, sensing decision input information is determined.

Abstract: Systems and methods for Wi-Fi sensing is provided. A networking device configured to operate as a sensing receiver and including at least one processor may operate as a system to carry out the Wi-Fi sensing method. The sensing receiver may obtain timing information from an unassociated access point not associated with the sensing receiver and operating as a sensing transmitter. The sensing receiver may generate local timing information according to the timing information. The sensing receiver may receive a sensing transmission from the unassociated access point. The sensing receiver may perform a sensing measurement on the sensing transmission and may associated the sensing measurement with a timestamp based on the local timing information. The sensing receiver may transmit the sensing measurement and the timestamp to the unassociated access point.

Abstract: In a general aspect, a method for determining a location of motion detected by wireless communication devices in a wireless communication network includes obtaining motion data associated with a first time frame. The motion data includes a set of motion indicator values. The method also includes generating a first probability vector based on the set of motion indicator values and obtaining a second probability vector generated from motion data associated with a prior time frame. The method additionally includes obtaining a transition probability matrix that includes transition values and non-transition values. The method further includes determining, by operation of a data processing apparatus, a location of the motion detected from the wireless signals exchanged during the first time frame.

Abstract: A method is described for Wi-Fi sensing. The method is carried out by a networked device operating as a sensing receiver. The networked device includes at least one processor configured to execute instructions. Initially, a series of time domain pulse sets determined from a series of sensing measurements based on a series of sensing transmissions transmitted by a sensing transmitter and received by the networked device over a time interval is obtained. Thereafter, a signature pulse occurring in the time domain pulse sets is identified. A series of amplitudes of the signature pulse in the time domain pulse sets are recorded. Further, a waveform frequency signature of a small motion occurring in a sensing space corresponding with the networked device is identified based on the series of amplitudes of the signature pulse.

Abstract: A method is described for Wi-Fi sensing. The method is carried out by a networking device configured to operate as a sensing initiator and includes at least one processor configured to execute instructions. Initially, a multiway sensing trigger message is transmitted via a transmitting antenna of the networking device. A plurality of sensing transmissions from a plurality of sensing responders responsive to the multiway sensing trigger message is simultaneously received by the networking device via a receiving antenna. A sensing measurement is performed on at least one of the plurality of sensing transmissions.

Abstract: A method is described for Wi-Fi sensing. The method is carried out by a networking device configured to operate as a station (STA) and includes at least one processor configured to execute instructions. The STA is associated with an original access point (AP) of an original basic service set (BSS) to establish an original association between the STA and the original AP. The STA and the original AP have an original communication link and an original sensing link established therebetween, the original communication link being established for data transmissions and the original sensing link being established for sensing transmissions. A transition management request identifying a preferred communication link between the STA and a preferred AP of a preferred BSS different than the original communication link with the original AP is received. Further, transmission of a transition preference indicating a preference to preserve the original sensing link is caused.

Abstract: A method for Wi-Fi sensing carried out by networked device is described. Initially, first set of time domain pulses is obtained from first channel representation information determined from first sensing measurement based on first sensing transmission transmitted by sensing transmitter and received by sensing receiver. A first amplitude attenuation is detected between first selected time domain pulse of first set of time domain pulses and first corresponding time domain pulse. Further, second set of time domain pulses is obtained from second channel representation information determined from second sensing measurement based on second sensing transmission transmitted by sensing transmitter and received by sensing receiver. A second amplitude attenuation is detected between second selected time domain pulse of second set of time domain pulses and second corresponding time domain pulse.