Cheng C Chen

US Patent:

20220394818, Dec 8, 2022

Filed:

Aug 15, 2022

Appl. No.:

17/888147

Inventors:

- Santa Clara CA, US
Carlos Cordeiro - Portland OR, US
Claudio Da Silva - Portland OR, US
Cheng Chen - Camas WA, US

International Classification:

H04W 88/10
H04B 7/06
H04B 7/0452
H04W 12/30
H04W 12/63

Abstract:

An access point (AP) configured for wireless local area network (WLAN) sensing is configured to encode a trigger frame (TF) for transmission. The trigger frame allocates resource units (RUs) for receiving high-efficiency (HE) trigger-based (TB) physical-layer protocol data units (PPDUs) (HE TB PPDUs) from a plurality of client devices (non-AP STAs). The trigger frame may solicit each of the client devices to transmit an HE TB PPDU in accordance with an UL OFDMA technique or an UL MU-MIMO technique. The AP may decode the HE TB PPDUs received from the client devices and may estimate channel state information (CSI) for a radio link associated with each of the client devices based on an HE-LTF of an associated one of the HE-TB PPDUs received from one of the client devices. In accordance with these embodiments, the AP may process changes in the CSI of the radio links over time for a WLAN sensing application.

US Patent:

20220286947, Sep 8, 2022

Filed:

May 23, 2022

Appl. No.:

17/751018

Inventors:

Dave A. Cavalcanti - Portland OR, US
Juan Fang - Portland OR, US
Mohammad Mamunur Rashid - Hillsboro OR, US
Carlos Cordeiro - Portland OR, US
Cheng Chen - Camas WA, US
Laurent Cariou - Milizac, FR
Javier Perez-Ramirez - North Plains OR, US
Dibakar Das - Hilsboro OR, US
Chittabrata Ghosh - Fremont CA, US

International Classification:

H04W 48/16
H04L 43/087
H04W 88/08
H04W 74/08
H04W 72/04
H04L 47/2416

Abstract:

An access point (AP) may be configured by processing circuitry to operate as a coordinator AP for performing BSS channel level coordination. The coordinator AP is configured to assign non-overlapping channels to one or more coordinated APs of overlapping BSSs to schedule time-sensitive traffic to help ensure bounded latency, jitter and reliability per BSS. In some embodiments, the AP may be configured for performing transmission level coordination and may initiate a coordinated transmission opportunity (TXOP) for resource assignment to control contention access among managed BSSs. To perform the BSS channel level coordination, the coordinator AP is configured to encode a multi-AP trigger frame (M-TF) to initiate the coordinated TXOP. The M-TF may be encoded to include a time-sensitive operation IE indicating how each STA is to access the channel within the coordinated TXOP.

US Patent:

20220236699, Jul 28, 2022

Filed:

Jan 28, 2022

Appl. No.:

17/586846

Inventors:

- San Ramon CA, US
Lauren A. FLORES - Katy TX, US
Cheng CHEN - Sugar Land TX, US

Assignee:

CHEVRON U.S.A. INC. - San Ramon CA

International Classification:

G05B 13/04
C02F 1/00

Abstract:

Embodiments of modelling a fluid treatment system are provided herein. One embodiment comprises obtaining synthetic data for a fluid treatment system from a data store. The fluid treatment system comprises a membrane and the fluid treatment system is configured to receive a stream of fluid for treatment. The embodiment comprises training a machine learning pressure prediction model using the synthetic data to predict a pressure for the membrane of the fluid treatment system. The trained pressure prediction model is combinable with an operator training simulator (OTS) model to update the OTS model to improve accuracy of simulation pressure output from the OTS model.

US Patent:

20230127717, Apr 27, 2023

Filed:

Dec 22, 2022

Appl. No.:

18/145763

Inventors:

Cheng CHEN - Camas WA, US
Dibakar DAS - Hillsboro OR, US
Carlos CORDEIRO - Camas WA, US

International Classification:

H04W 74/08
H04W 24/10

Abstract:

This disclosure describes systems, methods, and devices related to sensing measurement report. A device may generate a sensing measurement report frame comprising one or more fields to be sent to one or more station device (STA) responders. The device may cause to send the sensing measurement report frame to the one or more STA responders.

US Patent:

20230130190, Apr 27, 2023

Filed:

Dec 22, 2022

Appl. No.:

18/145743

Inventors:

Cheng CHEN - Camas WA, US
Dibakar DAS - Hillsboro OR, US
Carlos CORDEIRO - Camas WA, US

International Classification:

H04W 24/10

Abstract:

This disclosure describes systems, methods, and devices related to enhanced sensing. A device of a sensing by proxy (SBP) initiator may cause to send an SBP request to an access point (AP) to perform a sensing procedure with a first non-AP station device (STA) or a list of non-AP STAs. The device may identify a SBP response received from the AP, wherein the SBP response comprises an indication of performing the sensing procedure. The device may identify a sensing measurement report received from the AP.

US Patent:

20230087820, Mar 23, 2023

Filed:

Sep 30, 2022

Appl. No.:

17/956983

Inventors:

Cheng Chen - Camas WA, US
Dibakar Das - Hillsboro OR, US
Carlos Cordeiro - Portland OR, US

International Classification:

H04W 24/10
H04W 52/02

Abstract:

For wireless local area network (WLAN) sensing, a non-access point (AP) station (STA) sends a Measurement Setup Query frame to an access point station (AP) to signal one or more preferred time windows of the STA indicating when the STA is available to perform WLAN sensing with the AP. The STA receives a Measurement Setup Request frame received from the AP in response to the Measurement Setup Query frame. The Measurement Setup Request frame may indicate a time-window that is either within one of the preferred time-windows of the STA or a new proposed time-window that is not within one of the preferred time-windows of the STA. The STA may send a Measurement Setup Response frame to the AP to indicate an acceptance when the indicated time-window is within one of the preferred time-windows. The STA may send the Measurement Setup Response frame to indicate a rejection when the indicated time-window is not acceptable to the STA for performing the WLAN sensing procedure.

US Patent:

20230033468, Feb 2, 2023

Filed:

Sep 29, 2022

Appl. No.:

17/955664

Inventors:

Cheng Chen - Camas WA, US
Carlos Cordeiro - Portland OR, US
Dibakar Das - Hillsboro OR, US

International Classification:

H04W 64/00
H04W 74/08

Abstract:

This disclosure describes systems, methods, and devices related to responder-to-responder Wi-Fi sensing between station devices. A device may cause to send, during a trigger frame sounding phase of a responder-to-responder Wi-Fi sensing, a sensing responder-to-responder sounding trigger frame to the first station device and the second station device, the sensing responder-to-responder sounding trigger frame associated with causing the first station device to send a responder-to-responder null data packet (NDP) to the second station device; cause to send, during a reporting phase of the responder-to-responder Wi-Fi sensing, a sensing report trigger frame to the second station device; and identify, during the reporting phase, a sensing measurement report from the second station device based on the sensing report trigger frame, wherein the sensing measurement report is indicative of measurements of the responder-to-responder NDP.

US Patent:

20230025029, Jan 26, 2023

Filed:

Sep 30, 2022

Appl. No.:

17/957338

Inventors:

Cheng Chen - Camas WA, US
Carlos Cordeiro - Portland OR, US
Dibakar Das - Hillsboro OR, US

International Classification:

H04W 52/02

Abstract:

Methods, apparatuses, and computer readable media for wireless local area network (WLAN) private control channel are disclosed. Apparatuses of a non-access point (AP) or station (STA) are disclosed, where the apparatuses comprise processing circuitry configured to: decode a broadcast sensing parameters element, decode a broadcast target wakeup time (TWT) element, the TWT element comprising an indication of a TWT service period (SP), decode, during the TWT service period (SP), a sensing null data packet announcement (NDPA) frame, and decode, a short interframe space (SIFS) after receiving the sensing NDPA frame, an initiator-to-responder (I2R) null data packet (NDP).