Thomas G Richardson

US Patent:

8005091, Aug 23, 2011

Filed:

Jul 1, 2008

Appl. No.:

12/165815

Inventors:

Xinzhou Wu - Monmouth Junction NJ, US
Junyi Li - Bedminster NJ, US
Saurabh Tavildar - Jersey City NJ, US
Thomas Richardson - South Orange NJ, US

Assignee:

QUALCOMM Incorporated - San Diego CA

International Classification:

H04L 12/28

US Classification:

3703953, 370207, 370208, 370345

Abstract:

An apparatus and method are disclosed for generating a transmission connection identifier (CID) for a transmitter/receiver pair in a wireless network. The CID may be selected from or mapped to a hybrid CID space comprising a first set of orthogonal CIDs and a second set of non-orthogonal (random or pseudo-random) CIDs. When a transmitter device wants to initiate a peer-to-peer connection with a receiver device, the transmitter and receiver devices attempt to obtain a CID to identify their connection within a traffic channel in a shared frequency space. The first and/or second device attempt to select a CID from the first set of orthogonal CIDs. However, if a CID collision is detected, the first and second devices select their CID from the second set of non-orthogonal CIDs. The selected transmission CID may be used during a time slot or interval to facilitate communications between the first and second devices.

US Patent:

8072917, Dec 6, 2011

Filed:

Nov 10, 2008

Appl. No.:

12/268175

Inventors:

Xinzhou Wu - Monmouth Junction NJ, US
Junyi Li - Chester NJ, US
Sanjay Shakkottai - Austin TX, US
Rajiv Laroia - Far Hills NJ, US
Saurabh Tavildar - Jersey City NJ, US
Thomas Richardson - South Orange NJ, US
Jay Kumar Sundararajan - Cambridge MA, US

Assignee:

QUALCOMM Incorporated - San Diego CA

International Classification:

H04B 7/185
H04B 7/204
H04W 4/00

US Classification:

370318, 370319, 370332, 455 134

Abstract:

Methods and apparatus relating to scheduling of air link resources, e. g. , traffic segments, in wireless communications are described. Various described methods and apparatus are well suited to wireless peer to peer networks in which traffic scheduling is decentralized, e. g. an ad hoc peer to peer network. A first wireless terminal receives a transmission request and quality of service information from a second wireless terminal corresponding to a connection. The first wireless terminal decides not to receiver yield, determines a request response transmission power level as a function of the received quality of service information, and transmits, at the determined power level, a generated request response signal. By controllably adjusting the transmission power level of a request response, transmitter yielding decisions of lower priority links are impacted, since lower priority links measure and use received power level information corresponding to request responses of higher priority links in their transmitter yielding decisions.

US Patent:

8249046, Aug 21, 2012

Filed:

Jun 3, 2009

Appl. No.:

12/477356

Inventors:

Xinzhou Wu - Monmouth Junction NJ, US
Thomas Richardson - South Orange NJ, US
Junyi Li - Chester NJ, US
Saurabh Tavildar - Jersey City NJ, US
Pramod Viswanath - Champaign IL, US

Assignee:

QUALCOMM Incorporated - San Diego CA

International Classification:

H04W 4/00
H04J 1/00

US Classification:

370343, 455 631, 455 6711

Abstract:

Aspects relate to interference management in a multiple-input-multiple-output peer-to-peer network utilizing connection scheduling. When channel side information is available at both transmitter and receiver, both devices determine transmit/receiver beamforming vectors. Transmitter sends a first transmission request signal with first transmit beamforming vector and a second transmission request signal with second transmit beamforming vector in a transmission request block. Receiver estimates SINRs of the MIMO channels associated with the receive beamforming vectors and determines whether to return request response signals. Based on received request response signals, transmitter decides to transmit streams of data using the corresponding transmit beamforming vectors in the data burst. When channel side information is available only at receiver, transmitter sends one transmission request signal. Receiver estimates the SINRs of the MIMO channels associated with receive beamforming vectors using MMSE and/or successive interference cancellation (SIC), and returns request response signals in the request response block.

US Patent:

8306689, Nov 6, 2012

Filed:

Sep 4, 2009

Appl. No.:

12/554147

Inventors:

Craig Koepping - Wall NJ, US
Russell Shannon - Ocean Gate NJ, US
Thomas Richardson - Sicklerville NJ, US

Assignee:

The United States of America as represented by the Secretary of the Navy - Washington DC

International Classification:

G01M 17/00
G06F 7/00
G06F 19/00
G06F 11/30
G07C 5/00

US Classification:

701 343, 701 291, 701 314, 701 316, 701 318

Abstract:

A net-centric avionics diagnostics and automated maintenance environment system includes a storage medium on which is stored diagnostic data concerning the operation of systems of an aircraft and diagnostic data of aircraft systems, including BIT data, an organizational level automated maintenance environment server to transport maintenance and diagnostic information throughout the automated maintenance environment. The system also includes an organizational level diagnostics avionics tester that has a processor to execute diagnostics software for gathering, storing, and processing avionics diagnostics information. The tester is linked to an interface device that includes data acquisition hardware, standard interfaces for an avionics unit under test, and instrumentation for troubleshooting the unit under test. The organizational level diagnostics avionics tester is in network communication with the organizational level automated maintenance environment server. The system also includes a common intermediate level tester for testing a plurality of avionics modular assemblies, and an intermediate level maintenance environment server that stores historical maintenance data for use by the common intermediate level tester and by the organizational level diagnostics avionics tester.

US Patent:

8331488, Dec 11, 2012

Filed:

Oct 13, 2009

Appl. No.:

12/578251

Inventors:

Cyril Measson - Somerville NJ, US
Alberto Vigato - Rome, IT
Saurabh Tavildar - Jersey City NJ, US
Junyi Li - Chester NJ, US
Thomas Richardson - South Orange NJ, US
Xinzhou Wu - Monmouth Junction NJ, US

Assignee:

QUALCOMM Incorporated - San Diego CA

International Classification:

H04L 27/04

US Classification:

375299, 375340, 375295, 375260, 370479, 370328, 370329, 370503

Abstract:

Non-coherent modulation is used to communicate coding information via pilot signals using a first subset of resources, and coherent modulation is used to generate data signals. This allows for a stronger global code while keeping individual signaling complexity low. First and second communications devices communicate information using a set of communications resources. By performing non-coherent demodulation on pilot signals received on a first subset of the set of communications resources coding information is recovered. First and second channel estimates are generated from the pilot signals received on the first subset of the communications resources. Coherent demodulation is performed on data signals received on a second subset of the set of communications resources using the first and second channel estimates and the coding information to recover information communicated by the first communications device and to recover separate information communicated by the second communications device.

US Patent:

8493956, Jul 23, 2013

Filed:

Oct 31, 2007

Appl. No.:

11/933009

Inventors:

Xinzhou Wu - Monmouth Junction NJ, US
Junyi Li - Bedminster NJ, US
Rajiv Laroia - Far Hills NJ, US
Thomas Richardson - South Orange NJ, US

Assignee:

QUALCOMM Incorporated - San Diego CA

International Classification:

H04B 7/212

US Classification:

370348

Abstract:

Methods and apparatus related to the communication of traffic in peer to peer communications are described. A peer to peer communications system includes traffic slots, and for a pair of devices having a connection a first transmission request resource and a second transmission request resource are associated with a traffic transmission interval of the traffic slot, the first request resource preceding the second request resource. The first request resource is used for the first device to communicate a request to transmit traffic to the second device. The second request resource is used to communicate a request from the second device to transmit traffic to the first device. One protocol calls for a second resource request to override a first resource request. In another protocol the second resource is used to communicate additional information corresponding to a first resource request, when a request is communicated in the first resource.

US Patent:

8526461, Sep 3, 2013

Filed:

Nov 10, 2008

Appl. No.:

12/268208

Inventors:

Xinzhou Wu - Monmouth Junction NJ, US
Junyi Li - Chester NJ, US
Sanjay Shakkottai - Austin TX, US
Saurabh Tavildar - Jersey City NJ, US
Thomas Richardson - South Orange NJ, US
Jay Kumar Sundararajan - Cambridge MA, US

Assignee:

QUALCOMM Incorporated - San Diego CA

International Classification:

H04L 12/413

US Classification:

370447, 370230, 370278, 370445

Abstract:

Methods and apparatus relating to scheduling of air link resources, e. g. , traffic segments, in a wireless communications system are described. Various described methods and apparatus are well suited to wireless peer to peer networks in which traffic scheduling is decentralized, e. g. an ad hoc peer to peer network. An individual wireless terminal corresponding to a peer to peer connection which desires to transmit traffic signals make transmitter yielding decisions on a traffic slot by traffic slot basis. The transmitter yielding decision, in some embodiments, includes comparing a link quality estimate corresponding to a higher priority link intending to use the same traffic segment concurrently, to a dynamically generated transmitter yielding threshold. The dynamically generated transmitter yielding threshold is determined based on at least one of: quality of service information corresponding to its own link and historical link quality information corresponding to the higher priority link.

US Patent:

8582492, Nov 12, 2013

Filed:

Nov 10, 2008

Appl. No.:

12/268186

Inventors:

Xinzhou Wu - Monmouth Junction NJ, US
Junyi Li - Chester NJ, US
Sanjay Shakkottai - Austin TX, US
Rajiv Laroia - Far Hills NJ, US
Saurabh Tavildar - Jersey City NJ, US
Thomas Richardson - South Orange NJ, US
Jay Kumar Sundararajan - Cambridge MA, US

Assignee:

QUALCOMM Incorporated - San Diego CA

International Classification:

H04B 7/14

US Classification:

370315, 455500, 4554353, 4552772, 455512, 455135

Abstract:

Methods and apparatus relating to scheduling of air link resources, e. g. , traffic segments, in a wireless communications system are described. Various described methods and apparatus are well suited to wireless peer to peer networks in which traffic scheduling is decentralized, e. g. an ad hoc peer to peer network. An individual wireless terminal corresponding to a peer to peer connection which desires to communicate traffic signals makes a receiver yielding decision. The receiver yielding decision, in some embodiments, includes comparing a link quality estimate corresponding to its own link, to a dynamically generated receiver yielding threshold. The dynamically generated receiver yielding threshold is determined based on at least one of: quality of service information corresponding to its own link and historical link quality information corresponding to its own link.