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: 9408232
    Abstract: Certain aspects of the present disclosure relate to a technique for managing contention-based uplink data transmissions. According to certain aspects, a base station may allocate a common contention-based resource to a plurality of user equipment (UEs). The plurality of UEs may utilize the contention-based resource to transmit uplink data without prior scheduling, which may result in transmission collisions. Certain aspects of the present disclosure provide a mechanism for determining which UE sent an uplink transmissions based on one or more transmission parameter signaled to the UEs.
    Type: Grant
    Filed: April 20, 2011
    Date of Patent: August 2, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Aleksandar Damnjanovic, Sai Yiu Duncan Ho, Wanshi Chen, Juan Montojo
  • Patent number: 9408162
    Abstract: A method, apparatus, and computer program product for wireless communication are provided in which a determination is made of a first power available for transmitting a first signal using a first radio access technology while simultaneously transmitting a second signal using a second radio access technology different from the first radio access technology. An uplink grant is received and a determination is made regarding a second power for transmitting the first signal on uplink using the first radio access technology based on the uplink grant. A determination is made regarding a difference between the first power and the second power. Information related to the difference is reported via the first radio access technology based on a trigger. The reporting information is triggered when the change of a power backoff from a last report exceeds a selected threshold.
    Type: Grant
    Filed: September 28, 2011
    Date of Patent: August 2, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Sai Yiu Duncan Ho, Peter Gaal
  • Patent number: 9401874
    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: Grant
    Filed: August 14, 2013
    Date of Patent: July 26, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Yanjun Sun, Peerapol Tinnakornsrisuphap, Sai Yiu Duncan Ho, Bibhu Prasad Mohanty
  • Patent number: 9392504
    Abstract: A delta configuration is transmitted to a UE requesting a handover wherein the delta configuration details changes that are required for the current UE configuration in order to execute the handover. The handover is initiated via a measurement report transmitted to a currently serving source eNode B from the UE. The measurement report can comprise one or more of current radio conditions, current UE configuration or a preferred target eNode B if the handover is a inter eNode B handover. In a inter eNB handover, the current UE configuration is forwarded to the preferred target eNode B by the source eNode B. The target eNode B generates the delta configuration and transmits it to the source eNode B in a transparent container which is subsequently forwarded to the UE.
    Type: Grant
    Filed: June 18, 2008
    Date of Patent: July 12, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Masato Kitazoe, Sai Yiu Duncan Ho
  • Patent number: 9370003
    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: Grant
    Filed: August 16, 2013
    Date of Patent: June 14, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Jelena M. Damnjanovic, Juan Montojo, Peter Gaal, Wanshi Chen, Sai Yiu Duncan Ho
  • Patent number: 9326191
    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 8, 2013
    Date of Patent: April 26, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Sai Yiu Duncan Ho, Arnaud Meylan
  • Publication number: 20160113017
    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: December 22, 2015
    Publication date: April 21, 2016
    Inventors: Jelena DAMNJANOVIC, Sai Yiu Duncan HO, Madhavan Srinivasan VAJAPEYAM
  • Publication number: 20160088521
    Abstract: With multiple communication channels available and range extenders, a number of paths may be available for communicating traffic in a wireless network. Traffic on paths in the wireless network may be load balanced to improve channel utilization and/or relieve an overloaded communication channel. To load balance the traffic, a first AP may determine candidate paths between a first AP and a client device, wherein at least one of the candidate paths traverses a second AP. The AP may determine available bandwidths of the candidate paths based, at least in part, on availability of communication channels of the candidate paths. The AP may steer a portion of the wireless network traffic of the client device to a first of the candidate paths based, at least in part, on the available bandwidths.
    Type: Application
    Filed: September 17, 2015
    Publication date: March 24, 2016
    Inventors: Sai Yiu Duncan Ho, Peerapol Tinnakornsrisuphap, Brian Michael Buesker, Hemanth Sampath
  • Patent number: 9295094
    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: Grant
    Filed: May 7, 2012
    Date of Patent: March 22, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Sai Yiu Duncan Ho, Gavin Bernard Horn, Miguel Griot
  • Patent number: 9271153
    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: Grant
    Filed: May 22, 2014
    Date of Patent: February 23, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Sai Yiu Duncan Ho, Peerapol Tinnakornsrisuphap, Qingjiang Tian, Eyal Hochdorf, Xuetao Chen
  • Patent number: 9264930
    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: Grant
    Filed: June 11, 2013
    Date of Patent: February 16, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Jelena Damnjanovic, Sai Yiu Duncan Ho, Madhavan Srinivasan Vajapeyam
  • Patent number: 9247440
    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: Grant
    Filed: August 15, 2013
    Date of Patent: January 26, 2016
    Assignee: 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: 20150382372
    Abstract: Certain aspects of the present disclosure relate to techniques and apparatus for efficient support of variable bit rate (VBR) voice traffic on LTE uplink. In an aspect, a base station may periodically schedule transmission resources for use by a user equipment (UE) for transmitting data on a logical channel, wherein the periodically scheduling grants the UE a fixed first transport block (TB) size of transmission resources at regular intervals, receive an indication from the UE of an amount of data for transmission on the logical channel, and adjust the fixed first TB size of the periodically scheduled transmission resources to a fixed second TB size based on the indicated amount of data. In another aspect, a base station may configure a UE to enable scheduling request masking (SR-masking) on a logical channel, and configure the UE with a threshold amount of data for the logical channel to dynamically disable SR-masking on the logical channel.
    Type: Application
    Filed: June 25, 2015
    Publication date: December 31, 2015
    Inventors: Madhavan Srinivasan VAJAPEYAM, Min WANG, Sai Yiu Duncan HO, Aleksandar DAMNJANOVIC
  • Patent number: 9185666
    Abstract: A method, an apparatus, and a computer program product for wireless communication are provided in which a difference between a previous power management maximum power reduction (P-MPR) and a current P-MPR is determined. The previous P-MPR is the P-MPR when an indication is communicated that a power backoff is applied due to the previous P-MPR. A power headroom report (PHR) is triggered when the difference is greater than a threshold and the current P-MPR is greater than a sum of a maximum power reduction (MPR) and an additional MPR (A-MPR). Moreover, an apparatus is provided in which whether and how a P-MPR has changed is indicated in a PHR, and the PHR is transmitted. An apparatus is also provided in which a request is received from an evolved Node B (eNodeB) to report a P-MPR, and a PHR is transmitted including information related to the P-MPR.
    Type: Grant
    Filed: April 24, 2012
    Date of Patent: November 10, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Sai Yiu Duncan Ho, Peter Gaal
  • Patent number: 9130702
    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: August 26, 2014
    Date of Patent: September 8, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Sai Yiu Duncan Ho, Arnaud Meylan, Etienne Francois Chaponniere, Francesco Grilli, Shailesh Maheshwari, Thomas Klingenbrunn
  • Publication number: 20150223160
    Abstract: A wireless network may have a plurality of access points (APs). A network device may select a first AP from the plurality of APs for a wireless client device to access the wireless network. The first AP may be selected based at least in part on network performance between the wireless client device and the network device. The network device may cause the wireless client device to associate with the first AP.
    Type: Application
    Filed: September 18, 2014
    Publication date: August 6, 2015
    Inventors: Sai Yiu Duncan Ho, Vishwanatha Sastry Katariki, Peerapol Tinnakornsrisuphap, Brian Michael Buesker
  • Patent number: 9100382
    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: Grant
    Filed: March 15, 2013
    Date of Patent: August 4, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Olivier Jean Benoit, Anand Palanigounder, Sai Yiu Duncan Ho, Aram Perez, Bibhu Prasad Mohanty, Etan Gur Cohen
  • Patent number: 9100179
    Abstract: Systems and methodologies are described herein that facilitate techniques for managing respective original transmissions and re-transmissions of information within a wireless communication system. Various mechanisms are described herein for processing a new data indicator (NDI) associated with respective transmissions conducted for one or more Hybrid Automatic Repeat Request (HARQ) processes. For example, for a HARQ process shared between distinct scheduling schemes, an NDI associated with a latter transmission can be regarded as toggled irrespective of the value of the NDI upon recognizing that a utilized scheduling scheme (e.g., as indicated via a radio network temporary identifier (RNTI) or the like) has changed between successive transmissions (e.g., from semi-persistent scheduling to dynamic scheduling), thereby allowing processing of the latter transmission as a transmission of new data.
    Type: Grant
    Filed: September 8, 2009
    Date of Patent: August 4, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Sai Yiu Duncan Ho, Arnaud Meylan
  • Patent number: 9084209
    Abstract: Methods, systems, devices, and computer program products are disclosed which facilitate the transmission and reception of power headroom reports for component carriers in a multi carrier wireless communication system. A mobile device may determine available power headroom in a multicarrier configuration through a calculation of a maximum transmit power associated with a first component carrier (CC) in a subset of the CCs. The calculation can account for increases in transmit power of other component carriers in the subset by proportionally increasing transmit powers for each of the subset of CCs. A power headroom may be identified for one or more of the CCs based on a result of the calculation, and a power headroom report (PHR) may be generated that includes the power headroom available for the first CC.
    Type: Grant
    Filed: November 8, 2011
    Date of Patent: July 14, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Peter Gaal, Valentin Alexandru Gheorghiu, Sai Yiu Duncan Ho, Jelena M. Damnjanovic
  • Patent number: 9066286
    Abstract: A hybrid device can be configured to execute operations to select singleton coordinating functionality in a hybrid communication network. In one embodiment, a single master device (e.g., a hybrid device configured as both a registrar and a central access point (CAP)) can be selected. The hybrid device can transmit search messages to detect an existing master device and/or to identify other hybrid devices contending to become the master device. The hybrid device with the preferred device identifier is selected as the master device. In another embodiment, operations for selecting the coordinating functionality are split into two independent stages—a CAP selection stage and a registrar selection stage. In the CAP selection stage, the hybrid device with a preferred device weight (or a preferred device weight and a preferred device identifier) is configured as the CAP. In the registrar selection stage, similar operations can be executed to select the registrar.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: June 23, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Brian Michael Buesker, Ajay Kumar Vundyala, Sai Yiu Duncan Ho, Etan Gur Cohen, Rajesh Kumar, Peerapol Tinnakornsrisuphap