Patents by Inventor James A. Womack

James A. 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: 8307250
    Abstract: A method is provided for associating initial transmissions and retransmissions in semi-persistent scheduling. The method includes providing a first initial transmission associated with a first assigned Hybrid Automatic Repeat Request (HARQ) process ID. The method further includes providing a second initial transmission associated with a second assigned HARQ process ID. The method further includes providing at least one retransmission associated with the first HARQ process ID. The second initial transmission occurs before the at least one retransmission, and the second assigned HARQ process ID is different from the first assigned HARQ process ID.
    Type: Grant
    Filed: June 5, 2009
    Date of Patent: November 6, 2012
    Assignee: Research In Motion Limited
    Inventors: Zhijun Cai, Yi Yu, James Womack, Takashi Suzuki
  • Patent number: 8289895
    Abstract: A method for preventing a relay node from missing a transmission from an access 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 access node to the relay node and an acknowledgement/negative-acknowledgement message (ACK/NACK) from the access node to the relay node equal to ten milliseconds. The method further includes, when a forty millisecond periodicity is used for MBSFN subframes, the access node sending the relay node an asynchronous grant for an uplink retransmission when a data packet is missed, and when the relay node receives the grant for the uplink retransmission, the relay node retransmitting the missed data packet.
    Type: Grant
    Filed: April 24, 2009
    Date of Patent: October 16, 2012
    Assignee: Research In Motion Limited
    Inventors: Yi Yu, Zhijun Cai, James Womack, Andrew Mark Earnshaw
  • Patent number: 8275230
    Abstract: An optical fiber retainer includes a first split band of material having a bottom, a top, a front and a back surrounding an interior passage, the front including a first portion depending from the top and having a bottom edge and a second portion extending from the bottom and including a top edge, the top edge and bottom edges comprising a first split of the first split band. The bottom includes an inner surface comprising a wall of the interior passage and an outer surface facing away from the interior passage, and the top includes an inner surface comprising a wall of the interior passage and an outer surface facing away from the interior passage. The bottom outer surface includes a first connector element, and the top outer surface includes a second connector element configured to releasably mate with another connector element of another split band.
    Type: Grant
    Filed: February 17, 2010
    Date of Patent: September 25, 2012
    Assignee: CommScope, Inc. of North Carolina
    Inventor: Wade James Womack
  • Patent number: 8254315
    Abstract: A method for packet data retransmission on Hybrid Automatic Repeat Request (HARQ) Transmission failure having the steps of: checking whether changes to HARQ transmission error performance characteristics are greater than a threshold and/or a deterioration of channel conditions is indicated or less than threshold; if yes, re-segmenting an RLC-SDU or RLC-PDU data into smaller PDU data sizes; and transmitting said re-segmented RLC-PDU data; and if not yes, transmitting previous RLC-PDU data.
    Type: Grant
    Filed: October 31, 2006
    Date of Patent: August 28, 2012
    Assignee: Research in Motion Limited
    Inventors: Takashi Suzuki, James Womack, Gordon Peter Young
  • Publication number: 20110305182
    Abstract: A method for indicating and interpreting robust MAC signaling, the indicating method having the steps of: checking whether a MAC-PDU contains control information; and if yes, providing an indication to use a robust configuration for a HARQ feedback transmission, and the interpreting method having the steps of: receiving a MAC-PDU; checking whether an indication for robust HARQ feedback transmission is provided; and if yes, utilizing robust HARQ feedback transmission.
    Type: Application
    Filed: August 22, 2011
    Publication date: December 15, 2011
    Applicant: RESEARCH IN MOTION LIMITED
    Inventors: Takashi Suzuki, Gordon Peter Young, James Womack
  • Publication number: 20110222469
    Abstract: Transmission of data from a portable communication device to a base station via a radio frequency signal uses a plurality of modulation and coding schemes and a protocol that has recurring frames. Each frame has a plurality of transmission slots, different numbers of which can be used to transmit data. When it is desired to transmit data a higher rate than was used previously, an attempt is made to increase the number transmission slots being used. If doing so, produces a transmission results in a specific absorption rate limit being exceeded, then the modulation and coding scheme is changed to one having a greater data coding rate. The power level and the number transmission slots then are set so that the data transmission does not exceed the specific absorption rate limit. The data is then transmitted by the portable communication device.
    Type: Application
    Filed: March 11, 2010
    Publication date: September 15, 2011
    Inventors: Shirook Ali, James Womack, Amin Mobasher, James Warden
  • Publication number: 20110038581
    Abstract: A fiber optic component includes a body having at least one receptacle configured to receive a fiber optic connector, a shutter base mounted to the body at a mounting location adjacent to the at least one receptacle, and a first shutter connected to the shutter base by a first hinge. The first shutter, first hinge and shutter base are unitarily formed, and the first shutter is shiftable from a first position biased against the body and covering the at least one receptacle to a second position biased to an angularly spaced position relative to the first position.
    Type: Application
    Filed: February 16, 2010
    Publication date: February 17, 2011
    Inventors: Ronald Mudd, Joseph Livingston, Brad Billman, Thomas Crain, Aly Fahd, Gary Gibbs, Jeffrey Dale Nielson, Gil Ruiz, Wade James Womack
  • Publication number: 20110034135
    Abstract: Transmission of data from a portable communication device to a station via a radio frequency signal uses a protocol that has recurring frames, each having a plurality of transmission slots, different numbers of which can be used to transmit the data. When the portable communication device desires to send a data transmission, a first value is selected for either a power level for the radio frequency signal or the number of transmission slots to use. Then the first value is used to select a second value for the other one of the power level and the number of transmission slots. The first and second values are selected so that the data transmission at the selected power level using the selected number of transmission slots does not result in a specific absorption rate that is greater than a specific absorption rate limit.
    Type: Application
    Filed: August 5, 2009
    Publication date: February 10, 2011
    Inventors: Shirook Ali, James Womack, Houssam Kanj, Amin Mobasher
  • Publication number: 20100271999
    Abstract: A method for preventing a relay node from missing a transmission from an access 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 access node to the relay node and an acknowledgement/negative-acknowledgement message (ACK/NACK) from the access node to the relay node equal to ten milliseconds. The method further includes, when a forty millisecond periodicity is used for MBSFN subframes, the access node sending the relay node an asynchronous grant for an uplink retransmission when a data packet is missed, and when the relay node receives the grant for the uplink retransmission, the relay node retransmitting the missed data packet.
    Type: Application
    Filed: April 24, 2009
    Publication date: October 28, 2010
    Applicant: RESEARCH IN MOTION CORPORATION
    Inventors: Yi Yu, Zhijun Cai, James Womack, Andrew Mark Earnshaw
  • Publication number: 20100255835
    Abstract: A method of DRX signaling in a long-term evolution infrastructure between an evolved node B (eNB) and user equipment (UE), the method having the steps of providing a DRX value in a header of a medium access control protocol data unit (MAC-PDU); acknowledging the MAC-PDU; and activating, deactivating or reconfiguring DRX based on the provided DRX value.
    Type: Application
    Filed: June 18, 2010
    Publication date: October 7, 2010
    Inventors: Takashi Suzuki, James Womack, Gordon Young
  • Publication number: 20100207498
    Abstract: A fiber management shelf includes a housing having an opening, a door shiftable between open and closed positions, and a hinge connecting the door to the housing. The hinge includes a hinge pin and a receiver configured to receive and rotatably support the hinge pin. The receiver includes a channel having first and second sides defining a channel opening having a first channel width and at least one boss on the first or second channel side so that the channel has a second width at the boss less than the first channel width. The hinge pin has a first portion with a first width in a first direction and a second width in a second direction less than the first hinge pin width, and the first hinge pin width is greater than the second channel width and the second hinge pin width is less than the second channel width.
    Type: Application
    Filed: February 17, 2010
    Publication date: August 19, 2010
    Inventors: Wade James Womack, Gil Ruiz
  • Publication number: 20100209065
    Abstract: An optical fiber management shelf includes a housing having a first opening and a fiber optic termination module mounted to the fiber management shelf. A first door is pivotably mounted on the housing and pivotable about an axis from a first position substantially covering the first opening to a second position allowing access to the first opening. A first projection is on the first door, and a first receiver is on the housing configured to receive and selectively retain the first projection to releasably secure the first door to the housing. The first receiver includes a latch configured to retain the first projection when the first projection is initially inserted or pushed into the first receiver. The first receiver is also configured to release the first projection when the first projection is subsequently pressed or pushed toward the first receiver after the initial insertion into the first receiver.
    Type: Application
    Filed: February 17, 2010
    Publication date: August 19, 2010
    Inventors: Gil Ruiz, Wade James Womack
  • Publication number: 20100209068
    Abstract: An optical fiber retainer includes a first split band of material having a bottom, a top, a front and a back surrounding an interior passage, the front including a first portion depending from the top and having a bottom edge and a second portion extending from the bottom and including a top edge, the top edge and bottom edges comprising a first split of the first split band. The bottom includes an inner surface comprising a wall of the interior passage and an outer surface facing away from the interior passage, and the top includes an inner surface comprising a wall of the interior passage and an outer surface facing away from the interior passage. The bottom outer surface includes a first connector element, and the top outer surface includes a second connector element configured to releasably mate with another connector element of another split band.
    Type: Application
    Filed: February 17, 2010
    Publication date: August 19, 2010
    Inventor: Wade James Womack
  • Publication number: 20100085901
    Abstract: The present disclosure is directed to a system and method for operating a user agent (UA) and access device located within a communications cell according to a half-duplex (HD), frequency-division duplexing (FDD) protocol. The system and method are designed to accommodate a guard period (GP) between downlink (DL) and uplink (UL) communications from the UA, while addressing the loss of at least part of the DL communication before a subsequent UL subframe to accommodate the GP.
    Type: Application
    Filed: September 28, 2009
    Publication date: April 8, 2010
    Inventors: James Womack, Zhijun Cal, Wei Wu, Yi Yu
  • Publication number: 20090307556
    Abstract: A method is provided for associating initial transmissions and retransmissions in semi-persistent scheduling. The method includes providing a first initial transmission associated with a first assigned Hybrid Automatic Repeat Request (HARQ) process ID. The method further includes providing a second initial transmission associated with a second assigned HARQ process ID. The method further includes providing at least one retransmission associated with the first HARQ process ID. The second initial transmission occurs before the at least one retransmission, and the second assigned HARQ process ID is different from the first assigned HARQ process ID.
    Type: Application
    Filed: June 5, 2009
    Publication date: December 10, 2009
    Applicant: RESEARCH IN MOTION LIMITED
    Inventors: Zhijun Cai, Yi Yu, James Womack, Takashi Suzuki
  • Publication number: 20090307555
    Abstract: A method is provided for reuse of one of a plurality of hybrid automatic repeat request (HARQ) Process ID. The method includes receiving signaling used to associate at least one of the plurality of HARQ Process IDs with semi-persistent scheduling. The method further includes determining an activation of a semi-persistent resource. The method further includes associating the at least one of the plurality of HARQ Process IDs with the semi-persistent resource. The method further includes receiving a non-semi-persistent data communication utilizing the at least one of a plurality of HARQ Process IDs.
    Type: Application
    Filed: June 5, 2009
    Publication date: December 10, 2009
    Applicant: Research In Motion Limited
    Inventors: Zhijun Cai, Yi Yu, James Womack, Takashi Suzuki
  • Publication number: 20080167089
    Abstract: A method of DRX signaling in a long-term evolution infrastructure between an evolved node B (eNB) and user equipment (UE), the method having the steps of providing a DRX value in a header of a medium access control protocol data unit (MAC-PDU); acknowledging the MAC-PDU; and activating, deactivating or reconfiguring DRX based on the provided DRX value.
    Type: Application
    Filed: January 9, 2007
    Publication date: July 10, 2008
    Inventors: Takashi Suzuki, James Womack, Gordon Young
  • Publication number: 20080101312
    Abstract: A method for packet data retransmission on Hybrid Automatic Repeat Request (HARQ) Transmission failure having the steps of: checking whether changes to HARQ transmission error performance characteristics are greater than a threshold and/or a deterioration of channel conditions is indicated or less than threshold; if yes, re-segmenting an RLC-SDU or RLC-PDU data into smaller PDU data sizes; and transmitting said re-segmented RLC-PDU data; and if not yes, transmitting previous RLC-PDU data.
    Type: Application
    Filed: October 31, 2006
    Publication date: May 1, 2008
    Inventors: Takashi Suzuki, James Womack, Gordon Peter Young
  • Publication number: 20060083193
    Abstract: A communication unit (CU) (109, 111) network controller (113) and corresponding methods (603-609) are described that facilitate selectively routing calls. The CU includes a transceiver (403) suitable to support an air interface with a local area network (LAN) (101) and with a wide area network (WAN) (105) and a controller (405) that is coupled to and controlling the transceiver. These are each and collectively configured to determine when a bearer leg within the WLAN will not support a call attempt over the bearer leg and responsive to so determining, initiate the call over another bearer leg, e.g. within the LAN or the WAN. The determining includes, for example, receiving a message (703, 707, 713) that indicates or implies that the call can not be supported.
    Type: Application
    Filed: October 18, 2004
    Publication date: April 20, 2006
    Inventors: James Womack, Jheroen Dorenbosch, Niranjan Segal
  • Publication number: 20050276237
    Abstract: An access point (102) conveys (202) to communication units (104) of a plurality of multicast groups, a first indication that the access point supports a method for sending a multicast message. The access point receives (204) a multicast message directed to a receiving one of the plurality of multicast groups, and determines (206) that the communication units belonging to the receiving one of the plurality of multicast groups also support the method. The access point signals (208) a second indication to selectively awaken the communication units belonging to the receiving one of the plurality of multicast groups, and transmits (210) the multicast message to the receiving one of the plurality of multicast groups in a manner that allows (212) at least one communication unit not belonging to the receiving one of the plurality of multicast groups to remain asleep during the transmitting.
    Type: Application
    Filed: June 15, 2004
    Publication date: December 15, 2005
    Inventors: Niranjan Segal, Jheroen Dorenbosch, James Womack, Peter Drozt