James D Tomcik

US Patent:

6418143, Jul 9, 2002

Filed:

Oct 26, 1999

Appl. No.:

09/427296

Inventors:

Ramin Rezaiifar - San Diego CA
Paul E. Bender - San Diego CA
James D. Tomcik - San Diego CA

Assignee:

QUALCOMM Incorporated - San Diego CA

International Classification:

H04Q 720

US Classification:

370394

Abstract:

A method and apparatus for extending the sequence numbering range for a selective repeat transmission protocol is described. In accordance with one embodiment of the invention, data frames are transmitted including an eight-bit sequence number and a one-bit retransmit flag. The one bit retransmit flag indicates whether the frame is newly transmitted or retransmitted due to a failed first transmission. The transmit and receive systems each maintain a twelve-bit sequence number referred to as âlong sequence numbersâ comprised of the eight-bit sequence number transmitted with each frame and a four-bit extension. The long sequence number is transmitted within control frames and the eight-bit sequence number is transmitted within the data frames.

US Patent:

6567388, May 20, 2003

Filed:

Mar 5, 1999

Appl. No.:

09/264220

Inventors:

James Tomcik - Carlsbad CA
Yu-Dong Yao - San Diego CA

Assignee:

Qualcomm, Incorporated - San Diego CA

International Classification:

H04B 7216

US Classification:

370335, 370342, 714748

Abstract:

A method and apparatus for efficient data retransmission in a voice-over-data communication system between a first wireless communication device and a second wireless communication device, without affecting existing infrastructure. When a data frame containing audio information is received in error by the first wireless communication device, n negative-acknowledgement messages are sent from the first wireless communication device to the second wireless communication device which sent the frame, each of the negative acknowledgement messages transmitted in close succession to each other. When a negative-acknowledgement message is received by the first wireless communication device from the second wireless communication device, n copies of the frame identified by the negative-acknowledgement message is transmitted by the first wireless communication device, each of the copies transmitted in close succession to each other.

US Patent:

6721280, Apr 13, 2004

Filed:

Apr 19, 2000

Appl. No.:

09/551920

Inventors:

Anthony Mauro - San Diego CA
James Tomcik - Carlsbad CA

Assignee:

Qualcomm Incorporated - San Diego CA

International Classification:

G01R 3108

US Classification:

370252, 370328, 370465

Abstract:

A method and apparatus for reducing voice latency in a voice-over-data wireless communication system. In a transmitter, audio information to be transmitted is first encoded using a voice encoder operating in a first mode of operation. At least one operating parameter in the transmitter is measured by a processor, the least one operating parameter proportional to a latency between the transmitter and receiver. If the at least one operational parameter exceeds a predetermined threshold, the voice encoder is instructed to operate in a second mode of operation. When the at least one operational parameter falls below a second predetermined threshold, the voice encoder is instructed to operate in the first mode of operation.

US Patent:

6785262, Aug 31, 2004

Filed:

Sep 28, 1999

Appl. No.:

09/406945

Inventors:

Yu-Dong Yao - San Diego CA
James Tomcik - Carlsbad CA
Matthew B. von Damm - Escondido CA
James M. Brown - San Diego CA

Assignee:

Qualcomm, Incorporated - San Diego CA

International Classification:

H04L 1266

US Classification:

370352, 370516

Abstract:

A method and apparatus for reducing voice latency in a voice-over-data wireless communication system. In a transmitter, data frames are created from audio information by a vocoder and stored in a queue. Prior to storage, some of the data frames are eliminated, or dropped, and are not stored in the queue. In a receiver, data frames are generated from received signals and stored in a queue. Prior to storage in the receiver queue, some of the data frames are dropped. Data frames are dropped either at a single fixed rate, a dual fixed rate, or a variable rate, generally depending on a communication channel latency. By dropping data frames at the transmitter, the receiver, or both, voice latency due to data frame retransmissions is reduced.

US Patent:

6990119, Jan 24, 2006

Filed:

Feb 7, 2001

Appl. No.:

09/779016

Inventors:

Dan Vassilovski - Del Mar CA, US
James Tomcik - Carlsbad CA, US
Stephen Carter - Rancho Santa Fe CA, US
Yu-Dong Yao - San Diego CA, US
Maria Marshall - Oceanside CA, US

Assignee:

Qualcomm, Inc. - San Diego CA

International Classification:

H04J 15/00

US Classification:

370464, 37914218, 380270

Abstract:

A method and apparatus for allowing a transparent service option transition between at least two wireless communication devices (WCDs). A first communication between a first WCD and a second WCD is established using a first service option. At some point during the first communication, a transition to a second service option, such as an asynchronous data service option, is initiated. At least one of the WCDs provides an identification code to the other WCD using a signaling protocol over the first service option. The first communication is then terminated. A second communication using the second service option is then initiated by one of the WCDs, resulting in a seamless transition to the second service option.

US Patent:

7110357, Sep 19, 2006

Filed:

Jul 8, 2004

Appl. No.:

10/888630

Inventors:

Yu-Dong Yao - San Diego CA, US
James Tomcik - Carlsbad CA, US
Matthew B. von Damm - Escondido CA, US
James M. Brown - San Diego CA, US

Assignee:

QUALCOMM, Incorporated - San Diego CA

International Classification:

H04J 3/14
H04L 12/66
H04L 12/56

US Classification:

370230, 370352, 370516

Abstract:

A method and apparatus for reducing voice latency in a voice-over-data wireless communication system. In a transmitter, data frames are created from audio information by a vocoder and stored in a queue. Prior to storage, some of the data frames are eliminated, or dropped, and are not stored in the queue. In a receiver, data frames are generated from received signals and stored in a queue. Prior to storage in the receiver queue, some of the data frames are dropped. Data frames are dropped either at a single fixed rate, a dual fixed rate, or a variable rate, generally depending on a communication channel latency. By dropping data frames at the transmitter, the receiver, or both, voice latency due to data frame retransmissions is reduced.

US Patent:

7215684, May 8, 2007

Filed:

Sep 20, 2000

Appl. No.:

09/665743

Inventors:

Eric Rosen - Solana Beach CA, US
Mark Maggenti - San Diego CA, US
James Tomcik - Carlsbad CA, US
Dan Vassilovski - Del Mar CA, US

Assignee:

QUALCOMM Incorporated - San Diego CA

International Classification:

H04J 3/18

US Classification:

370477

Abstract:

A method and apparatus for reducing transmission overhead in a wireless communication system. In one embodiment, the apparatus is directed to a communication device comprising a processor for transmitting a data origination message, the data origination message initiating a data communication with a receiving station. Information needed to construct datagrams are also transmitted by the apparatus to the receiving station. The receiving station receives the data origination message and the information needed to construct datagrams and configures a packet data generator for sending datagrams to a destination device. Data network header information is constructed from information provided by the information needed to construct datagrams.

US Patent:

20020103004, Aug 1, 2002

Filed:

Jan 31, 2001

Appl. No.:

09/773402

Inventors:

Dan Vassilovski - Del Mar CA, US
James Tomcik - Carlsbad CA, US

International Classification:

H04M001/00

US Classification:

455/553000, 455/552000, 455/426000

Abstract:

Method and apparatus for providing fast mobile-to-mobile connectivity comprising a processor and a storage device coupled to the processor. The storage device contains a set of executable computer instructions for determining if an initial communication from a first wireless communication device operating in a wireless communication system comprises a request to initiate an asynchronous data communication and to identify if a second wireless communication device is operating within the same communication system as the first wireless communication device. If the first wireless communication device has requested an asynchronous communication and the second wireless communication device is operating within the same communication system, the processor routs the asynchronous data communication directly to the second wireless communication device without the use of a modem, thereby eliminating a modem training time.