Qing Gan Li

US Patent:

7869543, Jan 11, 2011

Filed:

Mar 13, 2008

Appl. No.:

12/048013

Inventors:

Ajit Kumar Reddy - Matawan NJ, US
Qing Li - Princeton Junction NJ, US
Walid Khairy Mohamed Ahmed - Tinton Falls NJ, US

Assignee:

Pine Valley Investments, Inc. - Las Vegas NV

International Classification:

H04K 1/02
H04B 1/04
H04L 25/49

US Classification:

375296, 375297, 4551143, 455126

Abstract:

A system is provided for processing a communication signal including a baseband amplitude component and a baseband phase component. The system includes an amplitude predictor configured for closed-loop pre-distortion of a baseband amplitude component, an amplitude lookup table configured for open-loop pre-distortion of the baseband amplitude component, and an amplitude interpolator configured to build up the amplitude lookup table during a closed-loop calibration period. The system also includes a phase predictor configured for closed-loop pre-distortion of a baseband phase component, a phase lookup table configured for open-loop pre-distortion of the baseband phase component, and a phase interpolator configured to build up the phase lookup table during a closed-loop calibration period.

US Patent:

7889810, Feb 15, 2011

Filed:

Dec 15, 2006

Appl. No.:

11/639999

Inventors:

Walid Khairy Mohamed Ahmed - Tinton Falls NJ, US
Qing Li - Bridgewater NJ, US

Assignee:

Pine Valley Investments, Inc. - Las Vegas NV

International Classification:

H04K 1/02
H04L 25/03
H04L 25/49
H04L 27/00

US Classification:

375296, 375295

Abstract:

A method and apparatus for a nonlinear feedback control system is disclosed, such as for electrical and electronic systems, for pre-distorting a nonlinear device. A nonlinear feedback control system includes a nonlinear device having a first input and a first output. A detection stage is in communication with the first output of the nonlinear device. A derivation stage is in communication with the detection stage, and the derivation stage is in communication with the first input of the nonlinear device.

US Patent:

8009765, Aug 30, 2011

Filed:

Mar 13, 2008

Appl. No.:

12/048022

Inventors:

Walid Khairy Mohamed Ahmed - Tinton Falls NJ, US
Qing Li - Princeton Junction NJ, US
Ajit Kumar Reddy - Matawan NJ, US
Eoin Carey - Cork, IE

Assignee:

Pine Valley Investments, Inc. - Las Vegas NV

International Classification:

H04K 1/02

US Classification:

375297

Abstract:

A digital polar transmitter includes a baseband processor configured to receive an input signal and to convert the input signal into a baseband amplitude component and a baseband phase component. The transmitter also includes a phase modulator in communication with the baseband processor. The phase modulator is configured to modulate an RF carrier signal based on the phase component and to generate a phase-modulated RF carrier signal. A power amplifier is provided in communication with the baseband processor and the phase modulator. The power amplifier is configured to amplify the phase-modulated RF carrier signal based on the baseband amplitude component and to generate an amplified RF signal. The transmitter also includes a digital feedback loop in communication with the power amplifier and the baseband processor. The digital feedback loop is configured to detect the amplified RF signal and to provide a digital amplitude feedback signal and a detected phase feedback signal to the baseband processor.

US Patent:

8233852, Jul 31, 2012

Filed:

Apr 4, 2008

Appl. No.:

12/098290

Inventors:

Walid K. M. Ahmed - Tinton Falls NJ, US
Eoin Carey - Cork, IR
Qing Li - Princeton Junction NJ, US
Ajit K. Reddy - Matawan NJ, US

Assignee:

Pine Valley Investments, Inc. - Las Vegas NV

International Classification:

H03C 1/62

US Classification:

4551151, 455 631, 455 6713, 455 6714, 455 6716, 4551143, 4551271, 4551272, 455126, 375296, 375297

Abstract:

An apparatus may include a non-linear module, a control module, and a calibration module. The non-linear module produces an output signal from an input signal. The control module selects, upon an occurrence of a calibration condition, a calibration operation from two or more calibration operations. Each of the two or more calibration operations may generate one or more correction values for the non-linear module. Further, each of the calibration operations produces the input signal from a pre-input signal. This selected calibration operation is performed by the calibration module. The two or more calibration operations include a first calibration operation and a second calibration operation. The first calibration operation produces the input signal from the pre-input signal according to a predictive technique. The second calibration operation produces the input signal from the pre-input signal according to a non-predictive technique.

US Patent:

8208583, Jun 26, 2012

Filed:

Dec 16, 2010

Appl. No.:

12/969843

Inventors:

Ajit Kumar Reddy - Matawan NJ, US
Qing Li - Princeton Junction NJ, US
Walid Khairy Mohamed Ahmed - Tinton Falls NJ, US

Assignee:

Pine Valley Investments, Inc. - Las Vegas NV

International Classification:

H04L 25/03

US Classification:

375297

Abstract:

A system is provided for processing a communication signal including a baseband amplitude component and a baseband phase component. The system includes an amplitude predictor configured for closed-loop pre-distortion of a baseband amplitude component, an amplitude lookup table configured for open-loop pre-distortion of the baseband amplitude component, and an amplitude interpolator configured to build up the amplitude lookup table during a closed-loop calibration period. The system also includes a phase predictor configured for closed-loop pre-distortion of a baseband phase component, a phase lookup table configured for open-loop pre-distortion of the baseband phase component, and a phase interpolator configured to build up the phase lookup table during a closed-loop calibration period.

US Patent:

20130279373, Oct 24, 2013

Filed:

Apr 18, 2013

Appl. No.:

13/865792

Inventors:

Michael F. Starsinic - Newtown PA, US
Chonggang Wang - Princeton NJ, US
Kamel M. Shaheen - King of Prussia PA, US
Guang Lu - Montreal, CA
Dale N. Seed - Allentown PA, US
Qing Li - Princeton Junction NJ, US
Lijun Dong - San Diego CA, US

International Classification:

H04M 15/00

US Classification:

370259

Abstract:

A method and apparatus are described for providing triggering services over multiple access networks. A triggering service server (TSS) architecture includes a triggering identity function (TIF) which maintains a database of device and application identifier mappings across multiple access networks, triggering capabilities and triggering preferences. The TSS also includes a triggering decision function (TDF) that uses information from the TIF and determines how triggers should be performed towards a device and/or an application hosted on a particular device. The TSS also includes triggering gateways (T-GWs) that perform triggering in different domains. A “not-registered-triggerable” state may be used to indicate whether an entity, such as a device, application or user can receive triggers although it is not registered in a specific access network. Methods and apparatus are also described for implementing various unassisted triggering and assisted triggering procedures using wireless transmit/receive units (WTRUs), application servers (ASs) and service capability servers (SCSs).

US Patent:

20220394657, Dec 8, 2022

Filed:

Jun 3, 2021

Appl. No.:

17/338491

Inventors:

- San Diego CA, US
Kapil GULATI - Belle Mead NJ, US
Gabi SARKIS - San Diego CA, US
Qing LI - Princeton Junction NJ, US

International Classification:

H04W 64/00
H04W 8/24
H04L 5/00

Abstract:

Disclosed are techniques for wireless communication. In an aspect, a user equipment (UE) receives, from a network entity, a configuration message including at least one information element indicating whether the UE is permitted to initiate sidelink-based positioning sessions, and transmits a positioning reference signal (PRS) request to at least one UE based on the at least one information element indicating that the UE is permitted to initiate sidelink-based positioning sessions.

US Patent:

20220386081, Dec 1, 2022

Filed:

Aug 13, 2020

Appl. No.:

17/628761

Inventors:

- Wilmington DE, US
Pascal M. ADJAKPLE - Great Neck NY, US
Qing LI - Princeton Junction NJ, US
Guodong ZHANG - Woodbury NY, US
Yifan LI - Conshohocken PA, US
Joseph M. MURRAY - Schwenksville PA, US
Rocco DI GIROLAMO - Laval, CA

International Classification:

H04W 4/08
H04W 72/00

Abstract:

A Sidelink AS group management function is disclosed for a UE to discover group members and organize them into AS layer sub-groups based on the AS layer group context information. A centralized Sidelink AS group management is disclosed that the Sidelink AS Group Manager discovers group members and organizes them into AS layer sub-groups for a UE. A Subgroup formation and configuration procedure is disclosed that SL AS Group Manager organizes the ULG into AS layer sub-groups, configures UE-to-UE relays for each UE in the ULG and sends the AS group management information to the UE. A distributed Sidelink AS group management method is disclosed that each UE discovers its group members and organizes the ULG into AS layer sub-groups. New Layer 2 structures and procedures are disclosed to enhance bearer management for Sidelink groupcast communications.