Qing 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:

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.

US Patent:

20220279393, Sep 1, 2022

Filed:

Aug 27, 2020

Appl. No.:

17/637600

Inventors:

- Wilmington DE, US
Pascal M. ADJAKPLE - Great Neck NY, US
Zhuo CHEN - Claymont DE, US
Qing LI - Princeton Junction NJ, US
Guodong ZHANG - Woodbury NY, US
Joseph M. MURRAY - Schwenksville PA, US

International Classification:

H04W 36/00
H04W 36/08
H04W 72/02
H04W 72/10

Abstract:

UEs' mobility may have a significant impact on sidelink communications and Uu mobility procedures of UEs participating in SL communication or SL Group Communication. Methods devised to optimize handover procedures, cell reselection procedures, and transition to RRC_IDLE and RRC_INACTIVE for UEs with ongoing SL communications. Methods are disclosed herein for PLMN selection for UEs requiring sidelink communication or with active sidelink communication, as well as, methods to provide priority-based resource allocation while using exceptional transmit resource pools. Also, provided are SL group management procedures to deal with impacts of UE mobility.

US Patent:

20220272760, Aug 25, 2022

Filed:

Aug 4, 2020

Appl. No.:

17/628748

Inventors:

- Wilmington DE, US
Pascal M. ADJAKPLE - Great Neck NY, US
Lakshmi R. IYER - King of Prussia PA, US
Mohamed AWADIN - Plymouth Meeting PA, US
Patrick SVEDMAN - Stockholm, SE
Qing LI - Princeton Junction NJ, US
Allan Y. TSAI - Boonton NJ, US
Yifan LI - Conshohocken PA, US
Rocco DI GIROLAMO - Laval, CA
Zhuo CHEN - Claymont DE, US
Guodong ZHANG - Woodbury NY, US

International Classification:

H04W 74/08

Abstract:

A first apparatus in a wireless communication system, the first apparatus including circuitry configured to trigger a Random Access Channel (RACH) procedure; select a two-step RACH procedure from among a plurality of RACH procedures as a RACH type to be performed; select a MsgA transmission resource; transmit a MsgA; and monitor for a network response from a second apparatus.