Qualcomm Incorporated

James D Tomcik

Yu-Dong Yao

Dan Vassilovski

Edward George Tiedemann, Jr

Paul E Bender

Ramin Rezaiifar

James M Brown

Matthew B Von Damm

Eric Carl Rosen

Mark Maggenti

Anthony P Mauro

Stephen S Carter

Maria Marshall

Edward G Tiedemann

Yu Dong Yao

Ramin c/o Qualcomm Incorporated Rezaiifar

Anthony Mauro

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.

Method and apparatus for reducing transmission overhead in a communication system

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.

Method and apparatus for voice latency reduction in a voice-over-data wireless communication system

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.

Method and apparatus to facilitate a transparent service option transition

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.

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.

Method and apparatus for efficient data retransmission in a voice-over-data communication system

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 &ldquo;long sequence numbers&rdquo; 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.

Extended range sequence numbering for selective repeat data transmission protocol

A method and apparatus for rejecting a request for call initialization a device capable of multi-mode communications. A user of the multi-mode wireless communication device enters one or more desired communication modes into the wireless communication device, where an indication of the selected mode(s) are stored in a memory. When a page message is received by the wireless communication device, it is examined to determine if a communication mode of an incoming call associated with the page message matches the indication of the selected communication mode(s) as stored in the memory. If a match is determined, the incoming call is accepted by the wireless communication device. If the communication mode of the incoming call does not match the indication of the selected communication mode(s), the call is rejected by the wireless communication device without interrupting the user or a call already in progress.

Method and apparatus for rejecting an over-the-air request for call initialization

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 a 'long sequence numbers' 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.

Growing community of inventors

San Diego, CA, United States of America

James D Tomcik