Robert C Love

US Patent:

6337983, Jan 8, 2002

Filed:

Jan 29, 2001

Appl. No.:

09/772226

Inventors:

Jeffrey D. Bonta - Arlington Heights IL
Robert T. Love - Barrington IL
Matthew J. Dillon - Oxfordshire, GB

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

H04Q 720

US Classification:

455437, 370335, 370336, 455436

Abstract:

A method and apparatus for handoff to a rescue channel is introduced without the need to send and receive handoff control messages. In the preferred embodiment of the present invention, coordination of the rescue procedure at the infrastructure and mobile station is provided first by disabling the mobile transmitter followed by subsequent detection of signal loss and frame erasures at the serving cells, then by enabling the mobile transmitter followed by subsequent detection of signal by a rescue cell, and finally by enabling the rescue cell channel transmitter followed by subsequent detection and reception of signal and frames by the mobile.

US Patent:

6414938, Jul 2, 2002

Filed:

Feb 14, 2000

Appl. No.:

09/504649

Inventors:

Robert John Corke - La Grange IL
Robert T. Love - Barrington IL
Ron Rotstein - Arlington Heights IL

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

H04J 314

US Classification:

370231, 370253, 370465, 370468

Abstract:

A method and system for retransmitting data packets in a communication system having variable data rates is disclosed. In a preferred embodiment, data packets are packetized to an atomic packet size equal to that of a lowest rate packet. If a data packet requires retransmission at a rate different than that at which the data packet was initially transmitted, the rate is dynamically changed based upon a multiple of the atomic packet size.

US Patent:

6725043, Apr 20, 2004

Filed:

Jul 20, 2001

Appl. No.:

09/910401

Inventors:

Jeffrey D. Bonta - Arlington Heights IL
Robert T. Love - Barrington IL
Matthew J. Dillon - Oxfordshire, GB

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

H04R 720

US Classification:

455437, 455436, 370335, 370336

Abstract:

A method and apparatus for handoff to a rescue channel is introduced without the need to send and receive handoff control messages. In the preferred embodiment of the present invention, coordination of the rescue procedure at the infrastructure and mobile station is provided first by disabling the mobile transmitter followed by subsequent detection of signal loss and frame erasures at the serving cells, then by enabling the mobile transmitter followed by subsequent detection of signal by a rescue cell, and finally by enabling the rescue cell channel transmitter followed by subsequent detection and reception of signal and frames by the mobile.

US Patent:

6728218, Apr 27, 2004

Filed:

Feb 14, 2000

Appl. No.:

09/504651

Inventors:

Robert John Corke - La Grange IL
Robert T. Love - Barrington IL
Ron Rotstein - Arlington Heights IL

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

G01R 3108

US Classification:

370252, 370335, 370469

Abstract:

A method and system for dynamic rate switching via medium access channel layer signaling is disclosed, wherein data rates for high data rate channels are automatically shifted up or down based on a predetermined metric. In a preferred embodiment, data rates are automatically shifted up or down based on transmit channel gain required to maintain a required signal to noise ratio.

US Patent:

6909707, Jun 21, 2005

Filed:

Nov 6, 2001

Appl. No.:

09/992614

Inventors:

Ron Rotstein - Arlington Heights IL, US
Yuda Yehuda Luz - Buffalo Grove IL, US
Robert T. Love - Barrington IL, US
Dennis Ray Schaefer - Buffalo Grove IL, US
Jiangnan (Jason) Chen - Darien IL, US
Colin Frank - Chicago IL, US

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

H04B007/216

US Classification:

370342, 370329, 370331, 370334, 370335, 370441

Abstract:

A method and apparatus for reuse of pseudo-random noise (PN) offsets within a cell of a wireless communication system such as a multi-sector CDMA system. Adaptive antenna arrays are employed to form the multiple sector areas within the CDMA cell. A forward link data channel is established between a mobile unit and a base station via sectors that share or reuse comment PN offsets, thereby providing desirable transmit diversity.

US Patent:

7006842, Feb 28, 2006

Filed:

Jan 30, 2001

Appl. No.:

09/774383

Inventors:

Hao Bi - Wheeling IL, US
Robert T. Love - Barrington IL, US

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

H04B 7/185

US Classification:

455522, 455 69, 370318, 370335, 370342, 370328

Abstract:

A method for adjusting an OLT for power control, which is capable of closely tracking a low tFER. The OLT is adjusted based on frame quality indicator FQI and channel quality metrics. FQI and channel quality metrics are generated at the receiver of a base transceiver station after reception of a frame. If FQI equal to a logic zero was generated, the OLT is adjusted upwards using a first stepsize. If FQI equal to a logic one was generated for a certain amount of consecutive frames, the OLT is adjusted downwards using a second stepsize. The OLT is also fine-tuned during the intervals between the transitions caused by applying the first stepsize or second stepsize. The first and second stepsizes and the amount of consecutive frames of FQI=1 before OLT is adjusted downwards are determined adaptively according to time-varying channel conditions and received frame quality indicator.

US Patent:

7706249, Apr 27, 2010

Filed:

Feb 8, 2006

Appl. No.:

11/351304

Inventors:

Hidenori Akita - Higashimurayama, JP
Kevin L. Baum - Rolling Meadows IL, US
Brian K. Classon - Palatine IL, US
Masaya Fukuta - Meguro-ku, JP
Hiroshi Hayashi - Nishitokyo, JP
Vijay Nangia - Algonquin IL, US
Robert T. Love - Barrington IL, US
Kenneth A. Stewart - Grayslake IL, US

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

H04J 11/00

US Classification:

370208, 370350, 455436

Abstract:

A method and apparatus is provided for transmitting an orthogonal frequency domain multiple access (OFDMA) signal including a synchronization channel signal transmitted within a localized portion of a bandwidth of the OFDMA signal (), the synchronization channel signal having predetermined time domain symmetry within the localized portion of the bandwidth (). The synchronization channel signal enables an initial acquisition and cell search method with low computational load which provides OFDMA symbol timing detection and frequency error detection by differential processing of sequence elements of the synchronization channel signal () and frame boundary detection and cell specific information detection () in an OFDMA system supporting multiple system bandwidths, both synchronized and un-synchronized systems, a large cell index and an OFDMA symbol structure with both short and long cyclic prefix length.

US Patent:

7729703, Jun 1, 2010

Filed:

Apr 27, 2006

Appl. No.:

11/412300

Inventors:

Jean-Aicard Fabien - Lincolnshire IL, US
Richard C. Burbidge - Hook, GB
Zhijun Cai - Euless TX, US
Robert T. Love - Barrington IL, US
Agnes M. Revel - Southampton, GB

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

H04W 72/00
H04W 36/00

US Classification:

4554522, 455436, 455437, 455439

Abstract:

A method in a wireless communication device and an apparatus, such as a wireless communication device, for reporting a channel quality indication to non-serving cells. The device can operate on a shared channel on a serving cell. The device can send a channel quality indicator message on a medium access control layer to multiple candidate cells in an active set of cells. The device can then switch from the serving cell to a new serving cell from the multiple candidate cells based on information in the channel quality indicator message.