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).

  • Publication number: 20140126542
    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: Application
    Filed: January 10, 2014
    Publication date: May 8, 2014
    Applicant: QUALCOMM INCORPORATED
    Inventors: Etienne F. Chaponniere, Sai Yiu Duncan Ho
  • Publication number: 20140126399
    Abstract: Uplink reporting and logical channel prioritization in multiflow operation is described. In some embodiments, uplink reporting for multiflow operation utilizes bearer level splitting where the UE associates bearers or logical channel groups (LCGs) with cells for uplink reporting. In some embodiments, uplink reporting for multiflow operation utilizes packet level splitting where the UE groups buffers for all LCGs into a common pool for uplink reporting. In packet level splitting embodiments, the UE may perform uplink reporting based on the total amount of data available for transmission in the common buffer pool or by applying scaling coefficients associated with the serving cells. Some embodiments manage mapping of logical channel payloads to uplink grants for multiflow operation.
    Type: Application
    Filed: June 11, 2013
    Publication date: May 8, 2014
    Inventors: Jelena DAMNJANOVIC, Sai Yiu Duncan HO, Madhavan Srinivasan VAJAPEYAM
  • Patent number: 8699487
    Abstract: Systems and methodologies are described that facilitate signaling and/or utilizing uplink delay budget related feedback in a wireless communication environment. A lowest delay budget associated with a most urgent Radio Link Control (RLC) service data unit (SDU) retained in a buffer of an access terminal can be determined. Further, a portion of a Medium Access Control (MAC) header (e.g., two reserved bits, . . . ) can be configured to carry a code related to a delay threshold corresponding to the lowest delay budget. Moreover, the MAC header can be transferred to a base station. The base station can detect the code carried by the portion of the MAC header, and a delay threshold can be determined as a function of the detected code (e.g., utilizing a radio bearer specific mapping). According to an example, the access terminal can be scheduled for uplink transmission as a function of the delay threshold.
    Type: Grant
    Filed: February 3, 2009
    Date of Patent: April 15, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Aleksandar Damnjanovic, Sai Yiu Duncan Ho
  • Patent number: 8687591
    Abstract: Systems and methodologies are described that facilitate providing user plane support for internet protocol (IP) relays. Service data units (SDU) received at a radio communication layer can be provided to an upper communication layer, such as a packet data convergence protocol (PDCP) layer, without regard to sequence numbers. The upper communication layer can handle reordering of the received protocol data units. Since communications related to a plurality of devices through one or more IP relays can be mapped over a single bearer, allowing reordering at the upper communication layer can mitigate delay caused where a donor or other upstream access point is delayed in providing a sequential SDU related to one of a plurality of devices downstream. In this regard, SDUs related to other devices can be processed by the upper communication layer while waiting for the sequential SDU.
    Type: Grant
    Filed: April 20, 2010
    Date of Patent: April 1, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Sai Yiu Duncan Ho, Parag Arun Agashe, Faith Ulupinar
  • Publication number: 20140064192
    Abstract: Systems and methodologies are described that segment or concatenate radio link control (RLC) service data units (SDUs) into RLC protocol data units (PDUs). In accordance with various aspects set forth herein, systems and/or methods are provided that receive a first RLC SDU, partition the first RLC SDU into a first RLC PDU and a second RLC PDU, set a length indicator (LI) field associated with the second RLC PDU to indicate the size of information contained in the second RLC PDU, concatenate the second RLC PDU with a third RLC PDU associated with a second RLC SDU to form a concatenated RLC PDU, and dispatch the first RLC PDU, the concatenated RLC PDU, and a fourth RLC PDU associated with the second RLC SDU.
    Type: Application
    Filed: November 8, 2013
    Publication date: March 6, 2014
    Applicant: QUALCOMM Incorporated
    Inventors: Sai Yiu Duncan Ho, Arnaud Meylan
  • Patent number: 8660085
    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: December 3, 2007
    Date of Patent: February 25, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Etienne F. Chaponniere, Sai Yiu Duncan Ho
  • Patent number: 8656239
    Abstract: Techniques for controlling data transmission in a wireless communication system based on hybrid automatic retransmission (HARQ) are described. In one design, a user equipment (UE) may determine the number of HARQ processes (Z) supported by the UE, e.g., based on the amount of resources available at the UE. The UE may send information indicative of the number of HARQ processes supported by the UE to a Node B. The UE may thereafter receive data from the Node B on up to Z HARQ processes. In one design, the UE may receive data for non-guaranteed bit rate (non-GBR) traffic on up to Z HARQ processes and may receive data for guaranteed bit rate (GBR) traffic on up to all HARQ processes available in the system. In another design, the UE may receive data for both GBR traffic and non-GBR traffic on up to Z HARQ processes.
    Type: Grant
    Filed: February 10, 2009
    Date of Patent: February 18, 2014
    Assignee: QUALCOMM Incorporated
    Inventor: Sai Yiu Duncan Ho
  • Patent number: 8639997
    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: September 1, 2009
    Date of Patent: January 28, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Aleksandar Damnjanovic, Sai Yiu Duncan Ho
  • Patent number: 8638699
    Abstract: Systems and methodologies are described that segment or concatenate radio link control (RLC) service data units (SDUs) into RLC protocol data units (PDUs). In accordance with various aspects set forth herein, systems and/or methods are provided that receive a first RLC SDU, partition the first RLC SDU into a first RLC PDU and a second RLC PDU, set a length indicator (LI) field associated with the second RLC PDU to indicate the size of information contained in the second RLC PDU, concatenate the second RLC PDU with a third RLC PDU associated with a second RLC SDU to form a concatenated RLC PDU, and dispatch the first RLC PDU, the concatenated RLC PDU, and a fourth RLC PDU associated with the second RLC SDU.
    Type: Grant
    Filed: November 9, 2009
    Date of Patent: January 28, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Sai Yiu Duncan Ho, Arnaud Meylan
  • Patent number: 8638773
    Abstract: Certain embodiments of the present disclosure propose methods for supporting multicarrier in a radio link control (RLC) communication layer. The proposed methods reduce the processing required when scheduling information for each carrier becomes available by generating protocol data units (PDUs) in advance, and storing the PDUs in buffers associated with each carrier.
    Type: Grant
    Filed: January 26, 2010
    Date of Patent: January 28, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Sai Yiu Duncan Ho, Rajat Prakash, Parag A. Agashe, Fatih Ulupinar, Jelena M. Damnjanovic
  • Patent number: 8619752
    Abstract: A data packet communication system employs radio link control (RLC) transmission between a transmitter and a receiver with an Automatic Repeat Request (ARQ) arrangement whereby polling of the receiver is accomplished with reduced amount of redundantly transmitted data, such as between an access node and terminal. Upon a polling event, such as emptying of a transmission buffer of the transmitter, expiration of a polling timer, or reaching a radio link control (RLC) protocol data units (PDUs) count threshold, the transmitter sends a polling command to the receiver. This polling command is smaller than any of the RLC PDUs, which are conventionally resent with a polling bit set to evoke a STATUS PDU from the receiver. With evolving communication standards tending toward larger PDUs, such as in excess of a kilobyte for HSPA+ (High-Speed Packet Access Evolution) and 3GPP LTE (Long Term Evolution), this inefficiency can be of increasing impact.
    Type: Grant
    Filed: March 13, 2008
    Date of Patent: December 31, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Arnaud Meylan, Sai Yiu Duncan Ho, Etienne F. Chaponniere
  • Publication number: 20130336260
    Abstract: Systems and methodologies are described that facilitate selecting an uplink carrier for random access within a wireless environment having multiple carriers. Selection of an uplink carrier for random access can be randomly selected from a set of available uplink carriers. Additionally, the uplink carrier for random access can be selected based upon which uplink carrier is paired with an anchor carrier. Further, the uplink carrier for random access can be identified based upon a bandwidth related to the user equipment (UE). Reference signals can also be employed in order to identify an uplink carrier to perform random access.
    Type: Application
    Filed: August 16, 2013
    Publication date: December 19, 2013
    Applicant: QUALCOMM Incorporated
    Inventors: Jelena M. Damnjanovic, Juan Montojo, Peter Gaal, Wanshi Chen, Sai Yiu Duncan Ho
  • Publication number: 20130322418
    Abstract: An access point selector can implement functionality for selecting an access point that should establish a communication link with a client device attempting to join a communication network. The access point selector can receive notifications from access points, in response to the client device's button being activated. Information in the received notifications can be analyzed and one of the access points (that transmitted the notifications) can be selected to establish the communication link with the client device. In some embodiments, prior to selecting an access point that should establish the communication link with the client device, the access point selector can attempt to identify a designated access point (DAP) in the communication network. The access point selector may execute operations for selecting the access point only if the DAP cannot be identified in the communication network.
    Type: Application
    Filed: May 30, 2013
    Publication date: December 5, 2013
    Inventors: Sai Yiu Duncan Ho, Bibhu Prasad Mohanty, Etan Gur Cohen
  • Patent number: 8594031
    Abstract: Methods and apparatuses are provided that facilitate providing quality of service for similar priority logical channels at least in part by assigning dynamic priority levels to the logical channels to allow certain logical channels to be assigned resources before other logical channels. Dynamic priority levels can be assigned based at least in part on a total accumulated used bytes of a given logical channel scaled by a prioritized bit rate of the logical channel. Thus, logical channels with a lower number of total accumulated used bytes scaled by the prioritized bit rate can be assigned higher priority to ensure resources are assigned to the logical channels. Moreover, the dynamic priority levels can be normalized to align the dynamic priority levels within certain values so as not to interfere with other logical channels of different assigned priority.
    Type: Grant
    Filed: October 1, 2010
    Date of Patent: November 26, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Bao V. Nguyen, Srividhya Krishnamoorthy, Vanitha A. Kumar, Sai Yiu Duncan Ho
  • Patent number: 8594069
    Abstract: Techniques for performing in-order data delivery during handover in a wireless communication system are described. A user equipment (UE) may perform handover from a source base station to a target base station. The target base station may start a timer after a data path from a gateway to the UE has been switched from the source base station to the target base station. The target base station may receive forwarded packets for the UE from the source base station and may receive new packets for the UE from the gateway. The target base station may send the forwarded packets received prior to expiration of the timer to the UE before any new packets. The target base station may send the forwarded packets to the UE without waiting for the timer to expire and may send the new packets to the UE after the timer expires.
    Type: Grant
    Filed: August 5, 2008
    Date of Patent: November 26, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Sai Yiu Duncan Ho, Francesco Grilli, Masato Kitazoe
  • Patent number: 8588138
    Abstract: Systems and methodologies are described that facilitate compressing headers for relay nodes. In particular, a plurality of internet protocol (IP) headers, tunneling protocol headers, and/or other routing headers in a packet can be compressed to facilitate efficient communications of packets between relay nodes and/or a donor access point. A donor or other upstream access point can be provided with a filter mask, bit stream, and filter mask identifier generated by a related relay node for packets having given static header data. Thus, the donor or other upstream access point can apply the filter mask to incoming packet headers, and where a resulting bit stream matches the received bit stream, can replace at least a portion of the packet headers with the filter mask identifier. The relay node can subsequently decompress the packet headers based on the filter mask identifier. Similar functionality can be used for compressing uplink communications.
    Type: Grant
    Filed: June 18, 2010
    Date of Patent: November 19, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Sai Yiu Duncan Ho, Fatih Ulupinar, Parag Arun Agashe, Rajat Prakash
  • Publication number: 20130297810
    Abstract: Techniques are provided for efficiently reestablishing connection between peer-to-peer devices. For example, there is provided a method for peer-to-peer (P2P) connection reestablishment by a mobile device. The method may involve caching at least one of a Radio Resource Control (RRC) context and a session management (SM) context for a previous P2P session with a peer mobile device. The method may further involve establishing a connection with the peer mobile device based at least in part on at least one connection context identifier (CC ID) associated with the previous P2P session. The method may further involve reestablishing a previous session state based on the at least one of the RRC context and the SM context.
    Type: Application
    Filed: May 7, 2012
    Publication date: November 7, 2013
    Applicant: QUALCOMM INCORPORATED
    Inventors: Sai Yiu Duncan Ho, Gavin Bernard Horn, Miguel Griot
  • Publication number: 20130294337
    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: Application
    Filed: June 28, 2013
    Publication date: November 7, 2013
    Inventors: Aleksandar Damnjanovic, Sai Yiu Duncan Ho
  • Patent number: 8565205
    Abstract: Uplink transmission power adjustment is provided by a mobile device receiving an uplink transmission grant from a serving base station. The mobile device determines a maximum power reduction for uplink transmissions and a SAR-related power reduction. The mobile device compares these values and adjusts transmission power according to the SAR-related power reduction in response to the SAR-related power reduction exceeding the maximum power reduction. A power headroom report is generated when the determined SAR-related power reduction exceeds a previous SAR-related power reduction. This power headroom report is transmitted from the mobile device to the serving base station under various conditions.
    Type: Grant
    Filed: November 2, 2011
    Date of Patent: October 22, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Sai Yiu Duncan Ho, Valentin Alexandru Gheorghiu, Peter Gaal
  • Publication number: 20130254519
    Abstract: A configuration device is disclosed for configuring a network device in a communication network. The configuration device initiates pairing operations with the network device via a short-range communication connection. The configuration device determines whether the network device is in a registered state or an unregistered state. If the configuration device determines that the network device is in the unregistered state, the configuration device establishes a secure short-range communication channel between the configuration device and the network device. The configuration device transmits a network key to the network device via the secure short-range communication channel for configuring the network device to communicatively connect to the communication network. If the configuration device determines that the network device is in the registered state, the configuration device determines whether to unregister the network device.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 26, 2013
    Applicant: QUALCOMM INCORPORATED
    Inventors: Olivier Jean Benoit, Anand Palanigounder, Sai Yiu Duncan Ho, Aram Perez