公开(公告)号：CA2691959C

公开(公告)日：2013-07-30

申请号：CA2691959

申请日：2005-08-30

Applicant: QUALCOMM INC

Inventor： BLACK PETER JOHN ,  KAPOOR ROHIT ,  SPINDOLA SERAFIN DIAZ ,  YAVUZ MEHMET

IPC: H04L7/00 ,  H04L49/9023 ,  H04L12/66 ,  H04L47/2416 ,  H04L47/30

Abstract: Adaptive De-Jitter Buffer for Voice over IP (VoIP) for packet switch communications. The de jitter buffer methods and apparatus presented avoid playback of underflows while balancing end-to-end delay. In one example, the de jitter buffer is recalculated at the beginning of each talkspurt. In another example, talkspurt packets are compressed upon receipt of all remaining packets.

公开(公告)号：CA2659197C

公开(公告)日：2013-06-25

申请号：CA2659197

申请日：2007-08-06

Applicant: QUALCOMM INC

Inventor： KAPOOR ROHIT ,  DIAZ SERAFIN

IPC: G10L21/04 ,  G10L19/02 ,  G10L19/12

Abstract: A method of communicating speech comprising time-warping a residual low band speech signal to an expanded or compressed version of the residual low band speech signal, time-warping a high band speech signal to an expanded or compressed version of the high band speech signal, and merging the time-warped low band and high band speech signals to give an entire time-warped speech signal. In the low band, the residual low band speech signal is synthesized after time-warping of the residual low band signal while in the high band, an unwarped high band signal is synthesized before time-warping of the high band speech signal. The method may further comprise classifying speech segments and encoding the speech segments. The encoding of the speech segments may be one of code-excited linear prediction, noise-excited linear prediction or 1/8 frame (silence) coding.

公开(公告)号：PL2135478T3

公开(公告)日：2013-01-31

申请号：PL08746165

申请日：2008-04-17

Applicant: QUALCOMM INC

Inventor： MOHANTY BIBHU P ,  GHOLMIEH AZIZ ,  YAVUZ MEHMET ,  RAUBER PETER H ,  KAPOOR ROHIT ,  SAMBHWANI SHARAD DEEPAK

IPC: H04W36/00 ,  H04W36/08

公开(公告)号：AU2009203958B2

公开(公告)日：2012-05-10

申请号：AU2009203958

申请日：2009-01-09

Applicant: QUALCOMM INC

Inventor： SAMBHWANI SHARAD DEEPAK ,  YAVUZ MEHMET ,  MOHANTY BIBHU P ,  OZTURK OZCAN ,  KAPOOR ROHIT

IPC: H04W72/02 ,  H04W72/04

Abstract: A base station can employ a shared resource, such as a control channel, for communication with a mobile device. The mobile device can be granted the exclusive access to the shared resource for a limited time. The exclusive access can be such that there is not a limit in message size that can be transferred across the shared resource. To improve operation, the exclusive grant can be applied until it is determined that appropriate packets are transferred.

公开(公告)号：AT544269T

公开(公告)日：2012-02-15

申请号：AT08746719

申请日：2008-04-23

Applicant: QUALCOMM INC

Inventor： KAPOOR ROHIT ,  SPINDOLA SERAFIN DIAZ

IPC: H04L12/56 ,  G10L21/04 ,  H04L49/9023

Abstract: Adaptive De-Jitter Buffer for Voice over IP (VoIP) for packet switched communications. The de-jitter buffer methods and apparatus presented modify the playback of packets dependent upon whether silence periods are detected inter-sentence or intra-sentence to optimize voice quality in a communication system. In one example, a de-jitter buffer determines the length of at least one silence period associated with a plurality of received packets and determines a time to transmit a portion of the packets based on the determined length of the silence period. In another example, a silence characterizer unit performs this function.

公开(公告)号：AT515172T

公开(公告)日：2011-07-15

申请号：AT08836485

申请日：2008-10-01

Applicant: QUALCOMM INC

Inventor： SAMBHWANI SHARAD DEEPAK ,  MOHANTY BIBHU ,  GRILLI FRANCESCO ,  MONTOJO JUAN ,  YAVUZ MEHMET ,  KAPOOR ROHIT

IPC: H04W74/08

Abstract: Techniques for supporting operation with enhanced uplink in inactive state are described. A user equipment (UE) may send an access preamble for random access while in an inactive state and may receive a message containing resources allocated to the UE. The allocated resources may be selected by a Node B from a pool of resources pre-allocated to the Node B for the enhanced uplink. The UE may send information (e.g., scheduling information and/or its UE identity) to the Node B using the allocated resources. The UE may receive an acknowledgement addressed to the UE based on the UE identity. The UE may remain in the inactive state and continue to use the allocated resources until they are de-allocated. Alternatively, the UE may transition to an active state and either continue to use the allocated resources or receive an allocation of new resources for the active state.

公开(公告)号：AT488838T

公开(公告)日：2010-12-15

申请号：AT05794150

申请日：2005-08-30

Applicant: QUALCOMM INC

Inventor： BLACK PETER JOHN ,  KAPOOR ROHIT ,  SPINDOLA SERAFIN DIAZ ,  YAVUZ MEHMET

IPC: G10L19/00 ,  H04L49/9023 ,  H04L12/56 ,  H04L47/2416 ,  H04L47/30

Abstract: Adaptive De-Jitter Buffer for Voice over IP (VoIP) for packet switch communications. The de-jitter buffer methods and apparatus presented avoid playback of underflows while balancing end-to-end delay. In one example, the de-jitter buffer is recalculated at the beginning of each talkspurt. In another example, talkspurt packets are compressed upon receipt of all remaining packets.

公开(公告)号：AU2006222963B2

公开(公告)日：2010-04-08

申请号：AU2006222963

申请日：2006-03-13

Applicant: QUALCOMM INC

Inventor： KAPOOR ROHIT ,  SPINDOLA SERAFIN DIAZ

IPC: G10L19/14 ,  G10L21/04

Abstract: In one embodiment, the present invention comprises a vocoder having at least one input and at least one output, an encoder comprising a filter having at least one input operably connected to the input of the vocoder and at least one output, a decoder comprising a synthesizer having at least one input operably connected to the at least one output of the encoder, and at least one output operably connected to the at least one output of the vocoder, wherein the encoder comprises a memory and the encoder is adapted to execute instructions stored in the memory comprising classifying speech segments and encoding speech segments, and the decoder comprises a memory and the decoder is adapted to execute instructions stored in the memory comprising time-warping a residual speech signal to an expanded or compressed version of the residual speech signal.

公开(公告)号：CA2713072A1

公开(公告)日：2009-08-20

申请号：CA2713072

申请日：2009-02-12

Applicant: QUALCOMM INC

Inventor： SAMBHWANI SHARAD DEEPAK ,  MOHANTY BIBHU ,  YAVUZ MEHMET ,  KAPOOR ROHIT ,  CHANDE VINAY

IPC: H04W72/04 ,  H04L5/00 ,  H04W72/12 ,  H04W74/08

Abstract: Providing for improved wireless communications for user equipment (UE) in a semi-active state is described herein. By way of example, a base station can employ particular wireless channel resources, monitored by a UE in a CELL_FACH state for instance, to trigger channel feedback information from the UE. The trigger can comprise an explicit order instructing the UE to provide data in response, or can include a portion of downlink traffic targeting the UE, where the UE is configured to respond in a suitable manner to receipt of traffic data. The UE can maintain the CELL_FACH state in receiving to and responding to the trigger, and can further receive subsequent traffic data in such state. Accordingly, the subject disclosure provides for improved efficiency and reliability in semi-active state wireless communications.

公开(公告)号：AT439728T

公开(公告)日：2009-08-15

申请号：AT05853445

申请日：2005-12-07

Applicant: QUALCOMM INC

Inventor： AGASHE PARAG ARUN ,  HAIPENG JIN ,  KAPOOR ROHIT

IPC: H04L47/43

Abstract: Techniques for header decompression in a communications system are discussed. The techniques comprise first determining if decompression of a packet header succeeds and then determining if a User Datagram Protocol (UDP) checksum in the packet header passes. If it is determined that the decompression succeeds and the UDP checksum passes, context information used for decompression is updated and the decompressed packet is delivered to an upper layer.