Patents by Inventor An-swol C. Hu

An-swol C. Hu 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: 9668191
    Abstract: The present disclosure presents example methods and apparatuses for improved cell searching in a wireless communications environment. For example, the disclosure presents example methods that can include computing a predicted serving signal strength associated with a serving cell where a mobility state of a user equipment is one of a stationary state or a low mobility state. Furthermore, in an aspect, the example method can include ascertaining a search threshold based at least on the predicted serving signal strength and generating a search integration length based on at least the search threshold. In addition, some example methods may include scanning for one or more reselection candidate cells based on at least the search integration length, wherein each of the one or more reselection candidate cells has a cell signal strength greater than the search threshold.
    Type: Grant
    Filed: January 18, 2013
    Date of Patent: May 30, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Vansh Pal Singh Makh, An-swol C. Hu, Jittra Jootar
  • Patent number: 9113416
    Abstract: At least one feature pertains to a method of communication that comprises aligning a measurement task that utilizes a resource within a user equipment, such that at least a portion of the measurement task is performed during a time that the resource is enabled in the user equipment, and executing the measurement task during the time that the resource is enabled in the user equipment. In one example, the measurement task may be a searcher task, the resource may comprise receiver circuitry, and the time that the resource is enabled corresponds to a DRX monitoring interval of a downlink channel, such as a high speed shared control channel. By aligning and executing the searcher task during the time that the resource is enabled in the user equipment, searcher overhead may be reduced. Reducing searcher overhead allows the user equipment to save power by disabling the receiver circuitry.
    Type: Grant
    Filed: November 4, 2011
    Date of Patent: August 18, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Jimmy C. Chui, An-swol C. Hu, Jittra Jootar, Feng Lu, Yi Su
  • Patent number: 8989736
    Abstract: The present disclosure presents a method and apparatus for determining reselection parameters for detected cells. For example, the method may include receiving system information block (SIB) data associated with one or more cells in a neighbor cell list (NCL). In such example, the SIB data may include a ranking offset parameter associated with each of the NCL cells. Furthermore, such an example method may include detecting a cell that is not in the NCL, determining a reselection ranking value associated with each of the NCL cells, the detected cell and the serving cell. In addition, in some examples, such method may include ranking the one or more NCL cells, the detected cell and the serving cell in a ranking list based on the reselection ranking values. As such, reselection parameters for detected cells may be determined.
    Type: Grant
    Filed: March 6, 2013
    Date of Patent: March 24, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Fan Wang, An-Swol C. Hu, Sundaresan Tambaram Kailasam, Uzma Khan
  • Patent number: 8965444
    Abstract: A particular method includes transmitting a message corresponding to a reporting event detected at a mobile device, where the reporting event is associated with a network condition that decreases a likelihood of the mobile device successfully decoding a reply to the message. The method also includes, in response to transmitting the message, increasing a signal-to-interference ratio (SIR) target of the mobile device.
    Type: Grant
    Filed: January 10, 2012
    Date of Patent: February 24, 2015
    Assignee: Qualcomm Incorporated
    Inventors: Harish Venkatachari, An-swol C. Hu, Rajiv R. Nambiar, Venkata Chalapathi Rao S. Emani, Ravi Gopalan, Sunny Arora
  • Patent number: 8923865
    Abstract: Apparatus and method for wireless communication in a wireless communication network includes operating a wireless device on a first wireless communication technology. Aspects also include detecting a cell of a second wireless communication technology and determining the detected cell of the second wireless communication technology satisfies a first reselection criterion based on a first measurement. Still further the aspects includes expediting a determination of whether to perform cell reselection to the second wireless communication technology based on the detected cell of the second wireless communication technology satisfying the first reselection criterion. Additionally, aspects include determining to reselect to the detected cell of the second wireless communication technology when the at least one new measurement satisfies a second reselection criterion for the reselection time period.
    Type: Grant
    Filed: January 18, 2013
    Date of Patent: December 30, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Fan Wang, An-swol C. Hu, Uzma Khan, Sundaresan Tambaram Kailasam, Krishna Rao Mandadapu
  • Publication number: 20140038597
    Abstract: The present disclosure presents a method and apparatus for determining reselection parameters for detected cells. For example, the method may include receiving system information block (SIB) data associated with one or more cells in a neighbor cell list (NCL). In such example, the SIB data may include a ranking offset parameter associated with each of the NCL cells. Furthermore, such an example method may include detecting a cell that is not in the NCL, determining a reselection ranking value associated with each of the NCL cells, the detected cell and the serving cell. In addition, in some examples, such method may include ranking the one or more NCL cells, the detected cell and the serving cell in a ranking list based on the reselection ranking values. As such, reselection parameters for detected cells may be determined.
    Type: Application
    Filed: March 6, 2013
    Publication date: February 6, 2014
    Applicant: QUALCOMM Incorporated
    Inventors: Fan Wang, An-Swol C. Hu, Kailasam Sundaresan Tambaram, Uzma Khan
  • Publication number: 20130331106
    Abstract: The present disclosure presents example methods and apparatuses for improved cell searching in a wireless communications environment. For example, the disclosure presents example methods that can include computing a predicted serving signal strength associated with a serving cell where a mobility state of a user equipment is one of a stationary state or a low mobility state. Furthermore, in an aspect, the example method can include ascertaining a search threshold based at least on the predicted serving signal strength and generating a search integration length based on at least the search threshold. In addition, some example methods may include scanning for one or more reselection candidate cells based on at least the search integration length, wherein each of the one or more reselection candidate cells has a cell signal strength greater than the search threshold.
    Type: Application
    Filed: January 18, 2013
    Publication date: December 12, 2013
    Applicant: Qualcomm Incorporated
    Inventors: Vansh Pal Singh MAKH, An-swol C. Hu, Jittra Jootar
  • Publication number: 20130244657
    Abstract: Apparatus and method for wireless communication in a wireless communication network includes operating a wireless device on a first wireless communication technology. Aspects also include detecting a cell of a second wireless communication technology and determining the detected cell of the second wireless communication technology satisfies a first reselection criterion based on a first measurement. Still further the aspects includes expediting a determination of whether to perform cell reselection to the second wireless communication technology based on the detected cell of the second wireless communication technology satisfying the first reselection criterion. Additionally, aspects include determining to reselect to the detected cell of the second wireless communication technology when the at least one new measurement satisfies a second reselection criterion for the reselection time period.
    Type: Application
    Filed: January 18, 2013
    Publication date: September 19, 2013
    Applicant: QUALCOMM Incorporated
    Inventors: Fan WANG, An-swol C. Hu, Uzma Khan, Sundaresan Tambaram Kailasam, Krishna Rao Mandadapu
  • Patent number: 8358604
    Abstract: The described apparatus and methods may include a receiver configured to receive a signal, the signal being a combination of physical channel signals that each correspond to a different one of a plurality of physical channels, and a controller configured to capture signal energy from at least two of the physical channel signals, and detect a cell based on the captured signal energy.
    Type: Grant
    Filed: December 23, 2009
    Date of Patent: January 22, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: An-swol C. Hu, Jittra Jootar, Parvathanathan Subrahmanya
  • Publication number: 20130012254
    Abstract: A particular method includes transmitting a message corresponding to a reporting event detected at a mobile device, where the reporting event is associated with a network condition that decreases a likelihood of the mobile device successfully decoding a reply to the message. The method also includes, in response to transmitting the message, increasing a signal-to-interference ratio (SIR) target of the mobile device.
    Type: Application
    Filed: January 10, 2012
    Publication date: January 10, 2013
    Inventors: Harish Venkatachari, An-swol C. Hu, Rajiv R. Nambiar, Venkata Chalapathi Rao S. Emani, Ravi Gopalan, Sunny Arora
  • Publication number: 20120294169
    Abstract: At least one feature pertains to a method of communication that comprises aligning a measurement task that utilizes a resource within a user equipment, such that at least a portion of the measurement task is performed during a time that the resource is enabled in the user equipment, and executing the measurement task during the time that the resource is enabled in the user equipment. In one example, the measurement task may be a searcher task, the resource may comprise receiver circuitry, and the time that the resource is enabled corresponds to a DRX monitoring interval of a downlink channel, such as a high speed shared control channel. By aligning and executing the searcher task during the time that the resource is enabled in the user equipment, searcher overhead may be reduced. Reducing searcher overhead allows the user equipment to save power by disabling the receiver circuitry.
    Type: Application
    Filed: November 4, 2011
    Publication date: November 22, 2012
    Applicant: QUALCOMM INCORPORATED
    Inventors: Jimmy C. Chui, An-swol C. Hu, Jittra Jootar, Feng Lu, Yi Su
  • Publication number: 20110149757
    Abstract: The described apparatus and methods may include a receiver configured to receive a signal, the signal being a combination of physical channel signals that each correspond to a different one of a plurality of physical channels, and a controller configured to capture signal energy from at least two of the physical channel signals, and detect a cell based on the captured signal energy.
    Type: Application
    Filed: December 23, 2009
    Publication date: June 23, 2011
    Applicant: QUALCOMM Incorporated
    Inventors: An-swol C. Hu, Jittra Jootar, Parvathanathan Subrahmanya
  • Publication number: 20100304744
    Abstract: Techniques for performing searches by a user equipment (UE) equipped with multiple receive antennas are described. In an aspect, the UE may support multiple receive diversity (R×D) search modes. Each R×D search mode may be different from each remaining R×D search mode in how correlation is performed, how correlation results are combined, and/or how search results are reported for the multiple receive antennas. The UE may select an R×D search mode from among the multiple R×D search modes and may perform at least one step of a search in accordance with the selected R×D search mode. In another aspect, the UE may perform a search with interference cancellation to detect cell(s). The UE may determine multiple complex weights for multiple receive antennas such that signals from interfering cells can be attenuated. The UE may perform a search to detect cell(s) using the complex weights.
    Type: Application
    Filed: May 27, 2010
    Publication date: December 2, 2010
    Applicant: QUALCOMM Incorporated
    Inventors: An-Swol C. Hu, Jittra Jootar