Patents by Inventor Nikolai K. N. Leung

Nikolai K. N. Leung has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9083521
    Abstract: A system is provided for transmitting information through a speech codec (in-band) such as found in a wireless communication network. A modulator transforms the data into a spectrally noise-like signal based on the mapping of a shaped pulse to predetermined positions within a modulation frame, and the signal is efficiently encoded by a speech codec. A synchronization sequence provides modulation frame timing at the receiver and is detected based on analysis of a correlation peak pattern. A request/response protocol provides reliable transfer of data using message redundancy, retransmission, and/or robust modulation modes dependent on the communication channel conditions.
    Type: Grant
    Filed: June 3, 2009
    Date of Patent: July 14, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Christian Sgraja, Marc W. Werner, Christian Pietsch, Wolfgang Granzow, Nikolai K N Leung, Christoph A. Joetten, Pengjun Huang
  • Patent number: 8989075
    Abstract: Method and a system for multicast service notification in cellular telephone system to enable the cellular telephone systems to provide both multicast and point-to-point services are disclosed. Several embodiments describe the signaling interaction between an access network and subscriber stations belonging to a multicast group to allow the access network to properly notify the subscriber stations of a the multicast service. Such a signaling further allows the subscriber stations to recognize the multicast service notification to participate in the multicast service.
    Type: Grant
    Filed: June 12, 2012
    Date of Patent: March 24, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Ragulan Sinnarajah, Jun Wang, Nikolai K. N. Leung, Tao Chen
  • Patent number: 8964788
    Abstract: A system is provided for transmitting information through a speech codec (in-band) such as found in a wireless communication network. A modulator transforms the data into a spectrally noise-like signal based on the mapping of a shaped pulse to predetermined positions within a modulation frame, and the signal is efficiently encoded by a speech codec. A synchronization sequence provides modulation frame timing at the receiver and is detected based on analysis of a correlation peak pattern. A request/response protocol provides reliable transfer of data using message redundancy, retransmission, and/or robust modulation modes dependent on the communication channel conditions.
    Type: Grant
    Filed: June 3, 2009
    Date of Patent: February 24, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Nikolai K. N. Leung, Marc W. Werner, Christian Pietsch, Wolfgang Granzow, Christian Sgraja, Christoph A. Joetten, Pengjun Huang
  • Patent number: 8959230
    Abstract: A method and apparatus for negotiating capability information for a broadcast service in a communication system. In one embodiment, the generic capabilities are pre-configured in BSC, which provides the generic capability information to MS and to PDSN based on a listing of available BC services and the corresponding capabilities. Another embodiment pre-configures PDSN with the generic capability information. According to still another embodiment, PDSN is pre-configured with the generic capability information, wherein the MS queries the PDSN directly for generic capability information via a PPP connection. In yet another embodiment, the MS queries the PCF, which in turn queries all of the PDSN in the system. The PDSN responsible for the BC responds to the query. Where multiple PDSNs may support the BC, the first to respond using multicast addressing obviates the need for the others to respond.
    Type: Grant
    Filed: January 28, 2002
    Date of Patent: February 17, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Raymond T. Hsu, An Mei Chen, Jun Wang, Nikolai K. N. Leung, Nileshkumar J. Parekh, Ragulan Sinnarajah
  • Patent number: 8958441
    Abstract: A system is provided for transmitting information through a speech codec (in-band) such as found in a wireless communication network. A modulator transforms the data into a spectrally noise-like signal based on the mapping of a shaped pulse to predetermined positions within a modulation frame, and the signal is efficiently encoded by a speech codec. A synchronization sequence provides modulation frame timing at the receiver and is detected based on analysis of a correlation peak pattern. A request/response protocol provides reliable transfer of data using message redundancy, retransmission, and/or robust modulation modes dependent on the communication channel conditions.
    Type: Grant
    Filed: June 3, 2009
    Date of Patent: February 17, 2015
    Assignee: Qualcomm Incorporated
    Inventors: Marc W. Werner, Christian Pietsch, Christian Sgraja, Wolfgang Granzow, Nikolai K N Leung, Christoph A. Joetten, Pengjun Huang
  • Patent number: 8526394
    Abstract: A method and system for a handoff in a broadcast communication system is disclosed. A subscriber-assisted handoff is impractical in a broadcast communication system due to e.g., a high signaling load, a difficulty to synchronize the broadcast transmission. On the other hand, the small number of broadcast channels enables the subscriber station to perform the handoff autonomously. While performing a handoff between broadcast transmissions, a disruption of service occurs due to lack of synchronization among the broadcast transmissions. To reduce the service disruption, upon detecting a need for handoff, the lower layers inform the application layer about the forthcoming handoff. The application layer thus may take measures to reduce or prevent the disruption.
    Type: Grant
    Filed: August 31, 2006
    Date of Patent: September 3, 2013
    Assignee: QUALCOMM Incorporated
    Inventor: Nikolai K. N. Leung
  • Patent number: 8295190
    Abstract: An improved method and system for determining round-trip time (RTT) during a radio link protocol (RLP) wireless communication link. The RTT estimate is negotiated by both sides of the RLP communication link without the need for the 3-way handshake generally required for RLP synchronization. The method includes techniques used by both sides of the RLP communication link to dynamically update and refine their initial, negotiated RTT estimates.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: October 23, 2012
    Assignee: QUALCOMM Incorporated
    Inventors: Nischal Abrol, Nikolai K. N. Leung
  • Publication number: 20120257563
    Abstract: Method and a system for multicast service notification in cellular telephone system to enable the cellular telephone systems to provide both multicast and point-to-point services are disclosed. Several embodiments describe the signaling interaction between an access network and subscriber stations belonging to a multicast group to allow the access network to properly notify the subscriber stations of a the multicast service. Such a signaling further allows the subscriber stations to recognize the multicast service notification to participate in the multicast service.
    Type: Application
    Filed: June 12, 2012
    Publication date: October 11, 2012
    Applicant: QUALCOMM INCORPORATED
    Inventors: Ragulan Sinnarajah, Jun Wang, Nikolai K.N. Leung, Tao Chen
  • Patent number: 8243644
    Abstract: Method and a system for multicast service notification in cellular telephone system to enable the cellular telephone systems to provide both multicast and point-to-point services are disclosed. Several embodiments describe the signaling interaction between an access network and subscriber stations belonging to a multicast group to allow the access network to properly notify the subscriber stations of a the multicast service. Such a signaling further allows the subscriber stations to recognize the multicast service notification to participate in the multicast service.
    Type: Grant
    Filed: April 1, 2005
    Date of Patent: August 14, 2012
    Assignee: QUALCOMM Incorporated
    Inventors: Ragulan Sinnarajah, Jun Wang, Nikolai K. N. Leung, Tao Chen
  • Patent number: 8077679
    Abstract: Method and apparatus for providing broadcast overhead information interleaved with a broadcast session in a transmission on a broadcast channel of a wireless communication system. In one embodiment, the information is stored at the receiver to provide quick updating when a user changes to an alternate broadcast channel. In one embodiment, the content server provides an identifier SDP_ID to distinguish among sets of protocol options description sets.
    Type: Grant
    Filed: October 24, 2001
    Date of Patent: December 13, 2011
    Assignee: QUALCOMM Incorporated
    Inventor: Nikolai K. N. Leung
  • Patent number: 7881242
    Abstract: An apparatus for providing frame re-transmission in a broadcast communication system. Frame re-transmission is accomplished only when a predetermined number of negative acknowledgement messages are received with respect to one or more data frames. The predetermined number may vary in accordance with various operating parameters, such as the latency of the transmission and/or the number of wireless communication devices currently receiving a broadcast transmission.
    Type: Grant
    Filed: September 14, 2005
    Date of Patent: February 1, 2011
    Assignee: QUALCOMM Incorporated
    Inventors: Tao Chen, Nikolai K. N. Leung, Edward G. Tiedemann, Ragulan Sinnarajah
  • Patent number: 7796631
    Abstract: Method and a system for multicast service notification in cellular telephone system to enable the cellular telephone systems to provide both multicast and point-to-point services are disclosed. Several embodiments describe the signaling interaction between an access network and subscriber stations belonging to a multicast group to allow the access network to assign a channel conveying the multicast service between the access network and the subscriber stations.
    Type: Grant
    Filed: July 9, 2002
    Date of Patent: September 14, 2010
    Assignee: Qualcomm Incorporated
    Inventors: Ragulan Sinnarajah, Jun Wang, Nikolai K. N. Leung, Tao Chen
  • Patent number: 7701963
    Abstract: Micro-tunnels are used to provide multiple data service sessions to the same mobile node in a wireless communications system. Further, the flexibility of the micro-tunnels optimizes the resources of the system. On request for a data service, an encapsulation configuration record is generated. An encapsulation header is created in response to the encapsulation configuration. The encapsulation header includes a packet service identifier and a micro-tunnel identifier.
    Type: Grant
    Filed: October 14, 2003
    Date of Patent: April 20, 2010
    Assignee: QUALCOMM Incorporated
    Inventors: Ramin Rezaiifar, Nikolai K. N. Leung, Paul E. Bender, Rajesh K. Pankaj
  • Patent number: 7697523
    Abstract: Method and apparatus for data packet transport in a wireless transmission system supporting broadcast transmissions. A multicast tree is built between nodes through neighboring routers. The multicast tree forms a tunnel through which the broadcast content is transmitted. The broadcast message is encapsulated in an Internet Protocol packet for transmission through the multicast tree. At least one multicast tree is formed between the Internet portion of the system and the wireless portion of the system, such as the Access Network. In one embodiment, an external multicast tree is formed between a content source and a packet data service node, and an internal multicast tree is formed between the packet data service node and a packet control function node.
    Type: Grant
    Filed: October 3, 2001
    Date of Patent: April 13, 2010
    Assignee: Qualcomm Incorporated
    Inventors: Nikolai K. N. Leung, Nileshkumar J. Parekh, Raymond T. Hsu
  • Patent number: 7693508
    Abstract: Methods and apparatus for providing broadcast overhead information interleaved with a broadcast session in a transmission on a broadcast channel of a wireless communication system. In one embodiment, the information identifies parameters and a protocol stack for processing broadcast content. In one embodiment, the information is stored at the receiver to provide quick updating when a user changes to an alternate broadcast channel.
    Type: Grant
    Filed: August 20, 2001
    Date of Patent: April 6, 2010
    Assignee: QUALCOMM Incorporated
    Inventors: Nikolai K. N. Leung, Ragulan Sinnarajah
  • Publication number: 20090304058
    Abstract: A system is provided for transmitting information through a speech codec (in-band) such as found in a wireless communication network. A modulator transforms the data into a spectrally noise-like signal based on the mapping of a shaped pulse to predetermined positions within a modulation frame, and the signal is efficiently encoded by a speech codec. A synchronization sequence provides modulation frame timing at the receiver and is detected based on analysis of a correlation peak pattern. A request/response protocol provides reliable transfer of data using message redundancy, retransmission, and/or robust modulation modes dependent on the communication channel conditions.
    Type: Application
    Filed: June 3, 2009
    Publication date: December 10, 2009
    Applicant: QUALCOMM Incorporated
    Inventors: Nikolai K. N. Leung, Marc W. Werner, Christian Pietsch, Wolfgang Granzow, Christian Sgraja, Christoph A. Joetten, Pengjun Huang
  • Publication number: 20090304057
    Abstract: A system is provided for transmitting information through a speech codec (in-band) such as found in a wireless communication network. A modulator transforms the data into a spectrally noise-like signal based on the mapping of a shaped pulse to predetermined positions within a modulation frame, and the signal is efficiently encoded by a speech codec. A synchronization sequence provides modulation frame timing at the receiver and is detected based on analysis of a correlation peak pattern. A request/response protocol provides reliable transfer of data using message redundancy, retransmission, and/or robust modulation modes dependent on the communication channel conditions.
    Type: Application
    Filed: June 3, 2009
    Publication date: December 10, 2009
    Applicant: QUALCOMM Incorporated
    Inventors: MARC W. WERNER, CHRISTIAN PIETSCH, CHRISTIAN SGRAJA, WOLFGANG GRANZOW, NIKOLAI K.N. LEUNG, CHRISTOPH A. JOETTEN, PENGJUN HUANG
  • Patent number: 7593408
    Abstract: A method and apparatus for resolving ambiguity in reception of multiple retransmitted frames includes ascertaining for each data frame received from a transmitter whether the frame is a retransmitted frame. If the frame is a retransmitted frame, the frame may be stored in a resequencing buffer. If an abort timer associated with the second round of retransmission has been set for the retransmitted frame, an associated negative-acknowledgment-list (NAK-list) entry is not removed from a NAK list until the abort timer has expired. If the abort timer has not been set for the retransmitted frame, the associated NAK-list entry is removed from the NAK list. The method and apparatus may reside in a transport function in which a transmitter sends data frames to a receiver in accordance with the Radio Link Protocol interface. The transport function may reside in, e.g., a data-capable cellular or satellite-based base station and subscriber unit.
    Type: Grant
    Filed: April 18, 2006
    Date of Patent: September 22, 2009
    Assignee: QUALCOMM Incorporated
    Inventors: Ramin Rezaiifar, Nikolai K. N. Leung
  • Patent number: 7502385
    Abstract: Techniques for retransmitting data via RLP in a CDMA (e.g., cdma2000) system with a first retransmission mechanism provided by the RLP and a second retransmission mechanism provided by an HARQ-CF. In one method, missing RLP frames are first detected (e.g., by a receiver RLP). A dynamic timer is then maintained (e.g., by a receiver HARQ-CF) for each RLP frame detected to be missing. The dynamic timers are event-driven and have variable time durations. Each dynamic timer is updated based on events known to the receiver HARQ-CF. Fixed timers with fixed time durations may also be maintained (e.g., by the receiver RLP) for the missing RLP frames. Whether or not a missing RLP frame is lost is determined based on the dynamic timer and the fixed timer (if any) maintained for the RLP frame. A NAK may be issued for retransmission of each RLP frame deemed to be lost.
    Type: Grant
    Filed: March 8, 2005
    Date of Patent: March 10, 2009
    Assignee: QUALCOMM Incorporated
    Inventors: Yongbin Wei, Sai Yiu Duncan Ho, Nikolai K. N. Leung
  • Patent number: 7471658
    Abstract: Systems and techniques are disclosed relating to communications. The systems and techniques involve supporting communications between a base station and a plurality of users by establishing an overhead channel between one of the users and the base station, and transmitting data from said one of the users to the base station on the overhead channel in response to a message having a threshold value related to a loading on the base station by the users. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or the meaning of the claims.
    Type: Grant
    Filed: December 4, 2002
    Date of Patent: December 30, 2008
    Assignee: QUALCOMM, Incorporated
    Inventors: Sivaramakrishna Veerepalli, Nikolai K. N. Leung