Patents by Inventor James Earl Womack

James Earl Womack 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: 10321436
    Abstract: Methods, devices and systems for a wireless communication system using multiple-serving nodes are provided. In one embodiment, a method of wireless communication comprises sending from a wireless device an uplink control signal to a first node via a second node using a second communication link; receiving by said wireless device a downlink control signal from said first node using a first communication link; sending from said wireless device another uplink control signal to said second node using said second communication link; and receiving by said wireless device another downlink control signal from said second node via said first node using said first communication link.
    Type: Grant
    Filed: May 8, 2015
    Date of Patent: June 11, 2019
    Assignee: BlackBerry Limited
    Inventors: Yi Yu, Rose Qingyang Hu, Zhijun Cai, James Earl Womack
  • Publication number: 20190174388
    Abstract: Methods of combining semi-persistent resource allocation and dynamic resource allocation are provided. Packets, such as VoIP packets, are transmitted on the uplink and downlink using respective semi-persistent resources. For each mobile device, awake periods and sleep periods are defined. The semi-persistent resources are aligned with the awake periods so that most of the time the mobile device can turn of its wireless access radio during the sleep periods. In addition, signalling to request, and to allocate, resources for additional packets are transmitted during the awake periods, and the resources allocated for the additional packets are within the awake windows.
    Type: Application
    Filed: February 6, 2019
    Publication date: June 6, 2019
    Applicant: BlackBerry Limited
    Inventors: Zhijun Cai, James Earl Womack
  • Patent number: 10313970
    Abstract: Methods and apparatus for controlling discontinuous reception on a mobile device and in particular to control a short discontinuous reception timer in response to receipt of a medium access control control element. The methods and apparatus include stopping, restarting or maintaining the short discontinuous reception timer. Methods and apparatus for limiting or stopping a retransmission timer by providing user equipment with a maximum retry value for transmissions, by providing a maximum redundant version value, or by providing a medium access control control element to stop or prevent the start of a retransmission timer.
    Type: Grant
    Filed: August 13, 2015
    Date of Patent: June 4, 2019
    Assignee: BlackBerry Limited
    Inventors: Zhijun Cai, James Earl Womack, Takashi Suzuki, Gordon Peter Young, Yi Yu
  • Patent number: 10299209
    Abstract: A system and method are disclosed for providing uplink timing synchronization during DRX operation in a wireless communication system.
    Type: Grant
    Filed: June 15, 2018
    Date of Patent: May 21, 2019
    Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventors: James Earl Womack, Yi Yu, Zhijun Cai
  • Patent number: 10299208
    Abstract: A system and method are disclosed for providing uplink timing synchronization during DRX operation in a wireless communication system.
    Type: Grant
    Filed: June 15, 2018
    Date of Patent: May 21, 2019
    Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventors: James Earl Womack, Yi Yu, Zhijun Cai
  • Patent number: 10299207
    Abstract: A system and method are disclosed for providing uplink timing synchronization during DRX operation in a wireless communication system.
    Type: Grant
    Filed: June 15, 2018
    Date of Patent: May 21, 2019
    Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventors: James Earl Womack, Yi Yu, Zhijun Cai
  • Patent number: 10299206
    Abstract: A system and method are disclosed for providing uplink timing synchronization during DRX operation in a wireless communication system.
    Type: Grant
    Filed: June 15, 2018
    Date of Patent: May 21, 2019
    Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventors: James Earl Womack, Yi Yu, Zhijun Cai
  • Patent number: 10212638
    Abstract: Methods of combining semi-persistent resource allocation and dynamic resource allocation are provided. Packets, such as VoIP packets, are transmitted on the uplink and downlink using respective semi-persistent resources. For each mobile device, awake periods and sleep periods are defined. The semi-persistent resources are aligned with the awake periods so that most of the time the mobile device can turn off its wireless access radio during the sleep periods. In addition, signalling to request, and to allocate, resources for additional packets are transmitted during the awake periods, and the resources allocated for the additional packets are within the awake windows.
    Type: Grant
    Filed: June 13, 2013
    Date of Patent: February 19, 2019
    Assignee: BlackBerry Limited
    Inventors: Zhijun Cai, James Earl Womack
  • Publication number: 20190053225
    Abstract: A method for informing a relay node when to receive data. The method includes the relay node being informed of a fixed point in a subframe of data when an access node will begin transmitting relevant data over a physical downlink shared channel. The method further includes the relay node beginning to receive data at approximately the fixed point.
    Type: Application
    Filed: October 15, 2018
    Publication date: February 14, 2019
    Inventors: Yi Yu, Zhijun Cai, James Earl Womack
  • Patent number: 10135517
    Abstract: A method for preventing a first network node from missing a transmission from a second network node. The method includes, when a ten millisecond periodicity is used for Multicast/Broadcast Single Frequency Network (MBSFN) subframes, setting a time between an uplink grant from the second network node to the first network node and an acknowledgement/negative-acknowledgement message (ACK/NACK) from the second network node to the first network node equal to ten milliseconds. The method further includes, when a forty millisecond periodicity is used for MBSFN subframes, the second network node sending the first network node an asynchronous grant for an uplink retransmission when a data packet is missed, and when the first network node receives the grant for the uplink retransmission, the first network node retransmitting the missed data packet.
    Type: Grant
    Filed: August 26, 2016
    Date of Patent: November 20, 2018
    Assignee: BlackBerry Limited
    Inventors: Yi Yu, Zhijun Cai, James Earl Womack, Andrew Mark Earnshaw
  • Patent number: 10129812
    Abstract: A method for providing user agent data. The method includes an access node receiving an indicator sent from a relay node as an indication that the relay node has received data from the user agent.
    Type: Grant
    Filed: November 3, 2015
    Date of Patent: November 13, 2018
    Assignee: BlackBerry Limited
    Inventors: Zhijun Cai, Chandra Sekhar Bontu, Yi Yu, Mo-Han Fong, Sophie Vrzic, James Earl Womack, Andrew Mark Earnshaw, Yi Song
  • Patent number: 10111211
    Abstract: A method for informing a relay node when to receive data. The method includes the relay node being informed of a fixed point in a subframe of data when an access node will begin transmitting relevant data over a physical downlink shared channel. The method further includes the relay node beginning to receive data at approximately the fixed point.
    Type: Grant
    Filed: March 11, 2010
    Date of Patent: October 23, 2018
    Assignee: BlackBerry Limited
    Inventors: Yi Yu, Zhijun Cai, James Earl Womack
  • Publication number: 20180302855
    Abstract: A system and method are disclosed for providing uplink timing synchronization during DRX operation in a wireless communication system.
    Type: Application
    Filed: June 15, 2018
    Publication date: October 18, 2018
    Inventors: James Earl Womack, Yi Yu, Zhijun Cai
  • Publication number: 20180295575
    Abstract: A system and method are disclosed for providing uplink timing synchronization during DRX operation in a wireless communication system.
    Type: Application
    Filed: June 15, 2018
    Publication date: October 11, 2018
    Inventors: James Earl Womack, Yi Yu, Zhijun Cai
  • Publication number: 20180295576
    Abstract: A system and method are disclosed for providing uplink timing synchronization during DRX operation in a wireless communication system.
    Type: Application
    Filed: June 15, 2018
    Publication date: October 11, 2018
    Inventors: James Earl Womack, Yi Yu, Zhijun Cai
  • Publication number: 20180295577
    Abstract: A system and method are disclosed for providing uplink timing synchronization during DRX operation in a wireless communication system.
    Type: Application
    Filed: June 15, 2018
    Publication date: October 11, 2018
    Inventors: James Earl Womack, Yi Yu, Zhijun Cai
  • Patent number: 10085210
    Abstract: A system and method are disclosed for providing uplink timing synchronization during DRX operation in a wireless communication system.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: September 25, 2018
    Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS, CORP., LTD
    Inventors: James Earl Womack, Yi Yu, Zhijun Cai
  • Patent number: 10075915
    Abstract: A system and method are disclosed for providing uplink timing synchronization during DRX operation in a wireless communication system.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: September 11, 2018
    Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventors: James Earl Womack, Yi Yu, Zhijun Cai
  • Patent number: 10075916
    Abstract: A system and method are disclosed for providing uplink timing synchronization during DRX operation in a wireless communication system.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: September 11, 2018
    Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventors: James Earl Womack, Yi Yu, Zhijun Cai
  • Patent number: 10039153
    Abstract: A system and method are disclosed for providing uplink timing synchronization during DRX operation in a wireless communication system.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: July 31, 2018
    Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventors: James Earl Womack, Yi Yu, Zhijun Cai