Patents by Inventor Sai Yiu Duncan Ho

Sai Yiu Duncan Ho 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: 9021144
    Abstract: Systems and methodologies are described that facilitate utilizing timers in conjunction with transmitting buffer status reports (BSR). A prohibit timer can be utilized to determine when BSRs can be transmitted to an eNB. The prohibit timer can be initialized or restarted upon transmitting a BSR to an eNB. A BSR retransmit timer can be used to determine when to retransmit a BSR. The BSR retransmit timer can be initialized upon transmitting a BSR to an eNB and restarted each time an uplink resource allocation is received from the eNB. Once the timer expires, if an uplink transmission buffer contains data (e.g., size>0), the BSR can be retransmitted to the eNB. Control data feedback can additionally be used to determine when to retransmit the BSR. In addition, in either case, the timer duration values can be provided by the eNB.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: April 28, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Aleksandar Damnjanovic, Sai Yiu Duncan Ho
  • Patent number: 8995421
    Abstract: This innovation relates to systems and methods for transmission of protocol data units, and more particularly to processing polling requests from a radio link control peer. A radio link control transmitter can poll a receiver to obtain a report regarding the status of a set of data packets, and the polls can be sent in-band with a data packet. The receiver can determine to wait before sending the status report based on one or more characteristics of the received data packets.
    Type: Grant
    Filed: August 6, 2009
    Date of Patent: March 31, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Sai Yiu Duncan Ho, Gang A. Xiao
  • Publication number: 20150085699
    Abstract: A network configurator can dynamically configure a device to couple network data between other devices in a wireless network. The devices can include two independent wireless transceivers that can each operate within different frequency bands, such as the 2.4 GHz and 5.0 GHz frequency bands. The configuration of the independent wireless transceivers can be based, at least in part, on device capabilities of the wireless transceivers, channel conditions, and a quality of service associated with the other wireless stations in the wireless network.
    Type: Application
    Filed: May 22, 2014
    Publication date: March 26, 2015
    Applicant: QUALCOMM Incorporated
    Inventors: Sai Yiu Duncan Ho, Peerapol Tinnakornsrisuphap, Qingjiang Tian, Eyal Hochdorf, Xuetao Chen
  • Publication number: 20150049616
    Abstract: A hybrid device can implement functionality to automatically configure itself to form a home network with other network devices. If it is determined that the hybrid device is the central access point of a hybrid network, operating parameters are determined for the central access point. The central access point can then operate in conjunction with other non-CAP hybrid devices of the hybrid device to determine how to configure the non-CAP hybrid device. The configuration of the non-CAP hybrid device can be determined based, at least in part, on a communication link performance measurement between the CAP and the non-CAP hybrid device. Furthermore, the hybrid network can also be monitored to ensure that the hybrid devices do not repeatedly or randomly switch between different configurations.
    Type: Application
    Filed: August 15, 2013
    Publication date: February 19, 2015
    Applicant: QUALCOMM Incorporated
    Inventors: Sai Yiu Duncan Ho, Peerapol Tinnakornsrisuphap, Etan Gur Cohen, Bibhu Prasad Mohanty, Brian Michael Buesker, Rajesh Kumar, Anthony James Cowan
  • Publication number: 20150052255
    Abstract: Access point functionality of a network device may be disabled, resulting in a coverage hole in a communication network and affecting performance of a client device. Various techniques can be implemented for detecting and minimizing coverage holes. In one embodiment, the network device can selectively establish a communication link with the client device depending on whether the client device is in a coverage hole and depending on whether the client device can detect another access point in the communication network. In some embodiments, the client device can determine that it is in a coverage hole in response to detecting a reserved SSID and can accordingly notify a central coordinator of the communication network. In some embodiments, the central coordinator can identify the network device (with disabled access point functionality) that can eliminate the coverage hole and can cause the network device to enable its access point functionality.
    Type: Application
    Filed: August 14, 2013
    Publication date: February 19, 2015
    Applicant: QUALCOMM Incorporated
    Inventors: Yanjun Sun, Peerapol Tinnakornsrisuphap, Sai Yiu Duncan Ho, Bibhu Prasad Mohanty
  • Publication number: 20150036596
    Abstract: Systems and methodologies are described that facilitate employing a variety of medium access control (MAC) header formats in wireless communications. The MAC header formats can be specialized for a particular type of data included in a protocol data unit (PDU). In addition, the MAC headers can have a variable length to accommodate payloads of varying sizes without incurring unnecessary overhead. Further, mechanisms are provided to enable direct access and delivery of control PDUs to associated protocol layers to ensure better quality of service treatment.
    Type: Application
    Filed: October 17, 2014
    Publication date: February 5, 2015
    Inventor: Sai Yiu Duncan Ho
  • Patent number: 8942208
    Abstract: Providing for improved error control signaling in wireless communications is disclosed herein. By way of example, multiple transmissions can be conducted for a HARQ process prior to a scheduled feedback signal on the HARQ process, causing a receiving device to combine the multiple transmissions, rather than treat them as separate transmissions. In this manner, multiple transmissions can be employed to increase overall receive energy, without violating maximum transmit power constraints in a wireless communication. Further, these multiple transmissions can be configured based on prevailing signal strength at the receiving device, or based on processing capabilities of the receiving device, providing flexible protocols that can accommodate advanced as well as legacy UEs in wide range of wireless conditions.
    Type: Grant
    Filed: June 21, 2010
    Date of Patent: January 27, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Tao Luo, Durga Prasad Malladi, Xiaoxia Zhang, Juan Montojo, Sai Yiu Duncan Ho, Nathan Edward Tenny
  • Patent number: 8923814
    Abstract: Systems and methodologies are provided that facilitate security activation for wireless communications. In an aspect, a method for wireless communication is provided which includes determining a first security key for communicating with a source access point and receiving, from the source access point, a handover command that includes an indication of whether to apply a second security key upon handover. The method also includes handing over communication from the source access point to a target access point, where the second security key is applied for communicating with the target access point upon the handover when the handover command indicates to apply the second security key.
    Type: Grant
    Filed: November 12, 2012
    Date of Patent: December 30, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Masato Kitazoe, Sai Yiu Duncan Ho, Francesco Grilli, Nathan Edward Tenny
  • Patent number: 8917598
    Abstract: Systems and methodologies are described that facilitate providing flow control feedback for controlling downlink data transmission rates. Various schemes can be utilized to send the flow control feedback from an access terminal to a base station. For example, a control PDU (e.g., MAC control PDU, PDCP control PDU) can be generated based upon a level of resource utilization of the access terminal, and sent to the base station for controlling the downlink data transmission rate. Following this example, a type of control PDU, a value included within the control PDU, etc. can be selected as a function of the level of resource utilization. By way of another illustration, a CQI report that includes a value selected as a function of the level of resource utilization associated with the access terminal can be generated and transmitted to the base station for controlling the downlink data transmission rate.
    Type: Grant
    Filed: December 18, 2008
    Date of Patent: December 23, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Sai Yiu Duncan Ho, Arnaud Meylan, Etienne F. Chaponniere, Francesco Grilli, Shailesh Maheshwari, Thomas Klingenbrunn
  • Publication number: 20140362695
    Abstract: Systems and methodologies are described that facilitate providing flow control feedback for controlling downlink data transmission rates. Various schemes can be utilized to send the flow control feedback from an access terminal to a base station. For example, a control PDU (e.g., MAC control PDU, PDCP control PDU) can be generated based upon a level of resource utilization of the access terminal, and sent to the base station for controlling the downlink data transmission rate. Following this example, a type of control PDU, a value included within the control PDU, etc. can be selected as a function of the level of resource utilization. By way of another illustration, a CQI report that includes a value selected as a function of the level of resource utilization associated with the access terminal can be generated and transmitted to the base station for controlling the downlink data transmission rate.
    Type: Application
    Filed: August 26, 2014
    Publication date: December 11, 2014
    Inventors: Sai Yiu Duncan Ho, Arnaud Meylan, Etienne Francois Chaponniere, Francesco Grilli, Shailesh Maheshwari, Thomas Klingenbrunn
  • Publication number: 20140362776
    Abstract: An application may be associated with an application endpoint that is accessed via a wireless local area network. In this disclosure, a wireless station may select and associated with one of a plurality of access points that provides better application throughput to the application endpoint. The application throughput may be based upon a combination of the wireless link rate (between the wireless station and the access point) as well as a measured application data rate (from the access point to the application endpoint). An access point may measure and advertise application data rates for a plurality of application endpoints, including one or more servers coupled to the local area network, a gateway to a wide area network, and/or a server coupled to the wide area network.
    Type: Application
    Filed: June 7, 2013
    Publication date: December 11, 2014
    Inventors: Qingjiang Tian, Peerapol Tinnakornsrisuphap, Sai Yiu Duncan Ho, Bibhu Mohanty, Arnaud Meylan
  • Patent number: 8908581
    Abstract: Systems and methodologies are described that facilitate operating an access terminal in an LTE based wireless communication environment utilizing extended microsleep. While in non-DRX mode, an access terminal can operate in on state for a first period of time and in extended microsleep state for a second period of time. Further, the first and second periods of time can form a repeating pattern where these periods of time alternate. Thus, the access terminal can turn on its receiver for the first period of time (e.g., decode downlink information while in on state) and turn off its receiver for the second period of time (e.g., inhibit decoding of downlink information while in extended microsleep state). Further, the first period of time in the repeating pattern can be one TTI (e.g., 1 ms) and the second period of time in the repeating pattern can be a plurality of TTIs (e.g., 5 ms).
    Type: Grant
    Filed: April 30, 2008
    Date of Patent: December 9, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Sai Yiu Duncan Ho, Aleksandar Damnjanovic
  • Patent number: 8902927
    Abstract: Systems and methodologies are described that facilitate employing a variety of medium access control (MAC) header formats in wireless communications. The MAC header formats can be specialized for a particular type of data included in a protocol data unit (PDU). In addition, the MAC headers can have a variable length to accommodate payloads of varying sizes without incurring unnecessary overhead. Further, mechanisms are provided to enable direct access and delivery of control PDUs to associated protocol layers to ensure better quality of service treatment.
    Type: Grant
    Filed: September 30, 2008
    Date of Patent: December 2, 2014
    Assignee: QUALCOMM Incorporated
    Inventor: Sai Yiu Duncan Ho
  • Patent number: 8873471
    Abstract: Systems and methodologies of reducing overhead by designating various fields in an optimized Radio Link Control header. Depending on communication type (e.g., VoIP, non-VoIP) such fields include a combination of a Segment Indicator (SI—which indicates presence of a whole SDU at beginning or at an ending), a Sequence Number (SN), a Length Indicator (LI—which indicates length of a service data unit); a length for the length indicator (LLI—to enable a variable size for the LI and notify a receiver regarding such varying size); a Segment Offset (SO—to designate resegmented packets for lost protocol data units); a length indicator for the SO (LSO—to enable a variable size for the SO); and Last Segment Flag (LSF—for resegmentation of RLC protocol data units).
    Type: Grant
    Filed: September 30, 2008
    Date of Patent: October 28, 2014
    Assignee: QUALCOMM Incorporated
    Inventor: Sai Yiu Duncan Ho
  • Patent number: 8873513
    Abstract: A method used in a wireless communication system including a plurality of cells, the method includes transmitting to a mobile device from a source enhanced node B, and sending a Packet Data Convergence Protocol (PDCP) status report to a target enhanced node B. Another method includes transmitting to a mobile device from a source enhanced node B, and sending a Packet Data Convergence Protocol (PDCP) status report to the source enhanced node B prior to a re-pointing to a target enhanced node B.
    Type: Grant
    Filed: January 10, 2014
    Date of Patent: October 28, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Etienne F. Chaponniere, Sai Yiu Duncan Ho
  • Patent number: 8867440
    Abstract: A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus maintains at least one PHR trigger for triggering communication of a PHR for a plurality of component carriers. In addition, the apparatus communicates the PHR for at least one of the component carriers upon the at least one PHR trigger being triggered. The communicated PHR may be an aggregated PHR that includes power headroom information on the PCC and activated SCCs. The communicated PHR may further include an index associating information in the PHR to a corresponding component carrier. The communicated PHR may further include information indicating use of a PUSCH reference for computing the PHR for the at least one of the component carriers on which there is no PUSCH transmission.
    Type: Grant
    Filed: May 25, 2011
    Date of Patent: October 21, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Sai Yiu Duncan Ho, Jelena M. Damnjanovic, Aleksandar Damnjanovic, Wanshi Chen, Peter Gaal
  • Patent number: 8831004
    Abstract: Techniques for delivering data recovered by a HARQ entity in proper order to higher layers in a CDMA system. In a method, packets are received from the HARQ entity by the re-ordering entity and missing packets among the received packets are detected. Packets may be transmitted in a sequential order based on transmission sequence numbers (TSNs) assigned to the packets, and missing packets may be detected based on the TSNs of the received packets. Delivery of received packets later than the missing packets are stalled because higher layers expect data in-order. A determination is thereafter made whether each missing packet is (1) subsequently received from the HARQ entity or (2) lost, by successively eliminating HARQ channels that may be used to send the missing packet. Received packets previously stalled by each missing packet are delivered after the missing packet is determined to be lost or received.
    Type: Grant
    Filed: May 8, 2008
    Date of Patent: September 9, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Alkinoos Hector Vayanos, Durga Prasad Malladi, Sai Yiu Duncan Ho
  • Patent number: 8819435
    Abstract: Security keys are typically needed to communicate with various network communication protocols of a mixed communication network. Herein, a protocol-specific key for a particular network communication protocol is generated based upon a result of a hash operation that includes a network key associated with the mixed communication network and information corresponding to the particular network communication protocol. Interoperability of multiple devices in the mixed communication network is made possible when the multiple devices generate (i.e. derive) protocol-specific keys using the same network key and common information corresponding to particular network communication protocols.
    Type: Grant
    Filed: September 11, 2012
    Date of Patent: August 26, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Sai Yiu Duncan Ho, Roy Franklin Quick, Jr., Bibhu Prasad Mohanty, Etan Gur Cohen
  • Patent number: 8787242
    Abstract: Methods and apparatuses are provided that facilitate compressing packet headers for communicating among access points. An access point can advertise compression profiles to one or more disparate access points, and the one or more disparate access points can select at least one compression profile for compressing/decompressing packets related to the one or more disparate access points and/or devices communicating therewith. The one or more disparate access points can notify the access point of the selected compression profile, a compression context identifier, and/or static data related to identifying associated packets. In this regard, the access point can compress packets that have the associated static data according to the compression profile and compression context identifier. Similarly, the access point can decompress packets from the one or more disparate access points based on the compression context identifier.
    Type: Grant
    Filed: September 28, 2010
    Date of Patent: July 22, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Sai Yiu Duncan Ho, Fatih Ulupinar, Parag Arun Agashe
  • Patent number: 8774231
    Abstract: Systems and methods for addressing the de-synchronization of the cryptosync between the network and the mobile stations (eNB) that can occur at mobility are addressed. De-synchronization is resolved by forwarding HFN and PDCP Sequence Number(s) from the source eNB to the target eNB. In order to avoid re-use of a cryptosync for a given key, a backward offset from the initial COUNT value is used by the target eNB. These approaches do not require an over-the-air signaling and the COUNT value handling in the network is transparent to the mobile station.
    Type: Grant
    Filed: May 25, 2012
    Date of Patent: July 8, 2014
    Assignee: Qualcomm Incorporated
    Inventors: Masato Kitazoe, Sai Yiu Duncan Ho