Cheng C Chen

US Patent:

7676467, Mar 9, 2010

Filed:

Dec 6, 2005

Appl. No.:

11/294750

Inventors:

Maciek Kozyrczak - Bothell WA, US
Cheng C. Chen - Bellevue WA, US
Basem Nayfeh - Mercer Island WA, US

Assignee:

AudienceScience Inc. - Bellevue WA

International Classification:

G06F 17/30

US Classification:

707 6, 707102

Abstract:

A facility for identifying users that have an interest in a selected subject is described. For each of a number of actual users, the facility establishes a user behavior record describing the behavior of the actual user. The facility also establishes a user behavior record describing behavior of a virtual user. The behavior described by the user behavior record for the virtual user is made up of actions each tending to indicate an interest in the selected subject. The facility identifies a proper subset of the actual users whose user behavior records are most similar to the user behavior record of the virtual user as interested in the selected subject.

US Patent:

7809752, Oct 5, 2010

Filed:

Dec 6, 2005

Appl. No.:

11/294756

Inventors:

Maciek Kozyrczak - Bothell WA, US
Cheng C. Chen - Bellevue WA, US
Basem Nayfeh - Mercer Island WA, US

Assignee:

AudienceScience Inc. - Bellevue WA

International Classification:

G06F 17/30

US Classification:

707790

Abstract:

A facility for analyzing user behavior information is described. The facility receives a stream of user behavior information. The facility augments a representation of user behavior in accordance with the received stream of user behavior information. The representation augmented by the facility is a sparse matrix of user behavior facts. The facility analyzes the sparse matrix to obtain an analysis result for the received stream of user behavior.

US Patent:

8117202, Feb 14, 2012

Filed:

Dec 17, 2009

Appl. No.:

12/640900

Inventors:

Maciek Kozyrczak - Bothell WA, US
Cheng Che Chen - Bellevue WA, US
Basem Nayfeh - Mercer Island WA, US

Assignee:

AudienceScience Inc. - Bellevue WA

International Classification:

G06F 17/30

US Classification:

707736, 707749, 707758

Abstract:

A facility for identifying users that have an interest in a selected subject is described. For each of a number of actual users, the facility establishes a user behavior record describing the behavior of the actual user. The facility also establishes a user behavior record describing behavior of a virtual user. The behavior described by the user behavior record for the virtual user is made up of actions each tending to indicate an interest in the selected subject. The facility identifies a proper subset of the actual users whose user behavior records are most similar to the user behavior record of the virtual user as interested in the selected subject.

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:

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.