Patents by Inventor Hsien Woo

Hsien Woo 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: 9686059
    Abstract: Multi-cell interference management (MCIM) for interference management among multiple cells in a wireless communication network is provided. In some embodiments, MCIM includes collecting data (e.g., CQI measurements and/or subband usage statistics) from a neighborhood of base stations; determining local and neighborhood system utility metrics; and determining interference managing directives (e.g., that can be communicated to the MAC layer of a base station in the neighborhood of base stations).
    Type: Grant
    Filed: July 7, 2015
    Date of Patent: June 20, 2017
    Assignee: AirHop Communications, Inc.
    Inventor: Hsien Woo
  • Patent number: 9686360
    Abstract: LTE and HSPA/UMTS deployments are trending towards high density, heterogeneous and ad-hoc deployments. These deployments can be managed through Self-Organizing Network (SON) schemas. Enabling SON generally involves the introduction of new software and/or hardware entities into the network that can interact with existing base station and network entities (e.g., Enhanced Packet Core, Element Management System, and/or other network entities). In one embodiment, these interactions include the development and deployment of interfaces (e.g., APIs) and protocols between the SON entities and various network entities. For example, data collected on either side of an interface or protocol can be post-processed before consumption (e.g., for both data integrity purposes as well as bandwidth reduction purposes).
    Type: Grant
    Filed: June 2, 2014
    Date of Patent: June 20, 2017
    Assignee: AirHop Communications, Inc.
    Inventors: Hanson On, Douglas McPherson, Zaijin Guan, Ramakrishna Akella, Hsien Woo, Yan Hui
  • Publication number: 20150365205
    Abstract: Multi-cell interference management (MCIM) for interference management among multiple cells in a wireless communication network is provided. In some embodiments, MCIM includes collecting data (e.g., CQI measurements and/or subband usage statistics) from a neighborhood of base stations; determining local and neighborhood system utility metrics; and determining interference managing directives (e.g., that can be communicated to the MAC layer of a base station in the neighborhood of base stations).
    Type: Application
    Filed: July 7, 2015
    Publication date: December 17, 2015
    Inventor: Hsien Woo
  • Patent number: 9106358
    Abstract: Multi-cell interference management (MCIM) for interference management among multiple cells in a wireless communication network is provided. In some embodiments, MCIM includes collecting data (e.g., CQI measurements and/or subband usage statistics) from a neighborhood of base stations; determining local and neighborhood system utility metrics; and determining interference managing directives (e.g., that can be communicated to the MAC layer of a base station in the neighborhood of base stations).
    Type: Grant
    Filed: December 17, 2013
    Date of Patent: August 11, 2015
    Assignee: AirHop Communications, Inc.
    Inventor: Hsien Woo
  • Publication number: 20140355481
    Abstract: LTE and HSPA/UMTS deployments are trending towards high density, heterogeneous and ad-hoc deployments. These deployments can be managed through Self-Organizing Network (SON) schemas. Enabling SON generally involves the introduction of new software and/or hardware entities into the network that can interact with existing base station and network entities (e.g., Enhanced Packet Core, Element Management System, and/or other network entities). In one embodiment, these interactions include the development and deployment of interfaces (e.g., APIs) and protocols between the SON entities and various network entities. For example, data collected on either side of an interface or protocol can be post-processed before consumption (e.g., for both data integrity purposes as well as bandwidth reduction purposes).
    Type: Application
    Filed: June 2, 2014
    Publication date: December 4, 2014
    Inventors: Hanson On, Douglas McPherson, Zaijin Guan, Ramakrishna Akella, Hsien Woo, Yan Hui
  • Publication number: 20140169200
    Abstract: Multi-cell interference management (MCIM) for interference management among multiple cells in a wireless communication network is provided. In some embodiments, MCIM includes collecting data (e.g., CQI measurements and/or subband usage statistics) from a neighborhood of base stations; determining local and neighborhood system utility metrics; and determining interference managing directives (e.g., that can be communicated to the MAC layer of a base station in the neighborhood of base stations).
    Type: Application
    Filed: December 17, 2013
    Publication date: June 19, 2014
    Inventor: Hsien Woo
  • Patent number: 7583633
    Abstract: A CDMA network dynamically generates hard handoff (HHO) target sets to support mobile station HHO. Dynamically identifying CDMA channels or cells as targets for HHO eliminates the need for statically configured HHO target sets. In an exemplary embodiment, a source BSS identifies a first set of channels corresponding to common neighbor cells of the cells associated with the active set pilots and/or reported PBU pilots. This first set may be adjusted by removing any common neighbor cells that include soft handoff target channels, and by adding selected vertical neighbor channels of the active set pilots and/or reported PBU pilots. Channels in the first set may be grouped by carrier frequency and evaluated based on CDMA channel type, BSS affiliation and characteristics, and the target's relationship to the active set to identify a preferred HHO target set. Such operations permit dynamic determination of whether to perform inter- or intra-BSS HHO.
    Type: Grant
    Filed: February 28, 2003
    Date of Patent: September 1, 2009
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Hsien Woo, Felicia Tsui, Viswanath Nagarajan
  • Patent number: 7522919
    Abstract: Noise is measured at one or more base stations in a mobile communication system during periodic silence periods. A periodic silence period is defined for at least one carrier that is independent of reverse link channel frame boundaries. The radio base stations transmits silence parameters defining the periodic silence period to mobile stations, which stop transmitting during the periodic silence periods. A time reference is provided to the mobile stations to synchronize the silence periods for all mobile stations.
    Type: Grant
    Filed: February 27, 2004
    Date of Patent: April 21, 2009
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Young C. Yoon, Wanshi Chen, Hsien Woo, Anthony C. K. Soong, Srinivasan Balasubramanian, Thawatt Gopal, Long Duan, Shiau-He Shawn Tsai
  • Publication number: 20080075003
    Abstract: A method for controlling communications traffic on an inter-access-network link includes receiving a request for transmission of a traffic flow and determining a priority queue associated with the traffic flow. If the priority queue corresponds to the one of a first plurality of priority levels, the method further includes determining whether one or more predetermined criteria for the traffic flow are satisfied. If yes, the method additionally admitting the traffic flow, storing information associated with the traffic flow in the queue, and transmitting information associated with the traffic flow from the queue based on at least a strict priority process. If the queue corresponds to the one of a second plurality of priority levels, the method further admitting the traffic flow, storing information associated with the traffic flow in the queue, and transmitting information associated with the traffic flow from the queue based on at least an arbitrated priority process.
    Type: Application
    Filed: September 19, 2007
    Publication date: March 27, 2008
    Applicant: FutureWei Technologies, Inc.
    Inventors: Kuo-Chun Lee, Mazin Al-Shalash, Shuqing Xing, Jun Hu, Qing Lin, Ted Olawuyi, Hsien Woo, Thawatt Gopal
  • Publication number: 20050013283
    Abstract: Noise is measured at one or more base stations in a mobile communication system during periodic silence periods. A periodic silence period is defined for at least one carrier that is independent of reverse link channel frame boundaries. The radio base stations transmits silence parameters defining the periodic silence period to mobile stations, which stop transmitting during the periodic silence periods. A time reference is provided to the mobile stations to synchronize the silence periods for all mobile stations.
    Type: Application
    Filed: February 27, 2004
    Publication date: January 20, 2005
    Inventors: Young Yoon, Wanshi Chen, Hsien Woo, Anthony Soong, Srinivasan Balasubramanian, Thawatt Gopal, Long Duan, Shiau-He Tsai
  • Publication number: 20040179525
    Abstract: An apparatus and method provide MAC logic enabling the use of two or more reverse link rate controls at the same time in one or more sectors of a radio base station. That enables the base station to control reverse link loading via reverse link rate control, while assigning mobile stations to the type of reverse link rate control best suited to their needs. For example, the base station MAC logic may implement both a common rate controller that generates per-sector rate control commands, and a dedicated rate controller that generates per-user rate control commands and assign mobile stations having relatively lax reverse link service needs to the common rate controller, while assigning mobile stations having more demanding reverse link service requirements to the dedicated rate control. More than two rate controls can be implemented, and exemplary choices include per-user, per-sector, per-group, and scheduled rate control in any combination.
    Type: Application
    Filed: January 9, 2004
    Publication date: September 16, 2004
    Inventors: Srinivasan Balasubramanian, David Reeves Comstock, Long L. Duan, Ralph Gholmieh, Thawatt Gopal, Patrick Ahamad Hosein, Seong-Jun Oh, Anthony C.K. Soong, Shiau-He Shawn Tsai, Rath Vannithamby, Jonas L. Wiorek, Hsien Woo, Tao Wu, Young C. Yoon
  • Publication number: 20040170136
    Abstract: A CDMA network dynamically generates hard handoff (HHO) target sets to support mobile station HHO. Dynamically identifying CDMA channels or cells as targets for HHO eliminates the need for statically configured HHO target sets. In an exemplary embodiment, a source BSS identifies a first set of channels corresponding to common neighbor cells of the cells associated with the active set pilots and/or reported PBU pilots. This first set may be adjusted by removing any common neighbor cells that include soft handoff target channels, and by adding selected vertical neighbor channels of the active set pilots and/or reported PBU pilots. Channels in the first set may be grouped by carrier frequency and evaluated based on CDMA channel type, BSS affiliation and characteristics, and the target's relationship to the active set to identify a preferred HHO target set. Such operations permit dynamic determination of whether to perform inter- or intra-BSS HHO.
    Type: Application
    Filed: February 28, 2003
    Publication date: September 2, 2004
    Inventors: Hsien Woo, Felicia Tsui, Viswanath Nagarajan