Patents by Inventor Phong Nguyen

Phong Nguyen 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).

  • Publication number: 20160205680
    Abstract: According to an exemplary embodiment, a communications node for use in a communications system wherein the communications node is adapted to: transmit to user equipments (UEs) within a node coverage area a first uplink-downlink configuration within a first time interval; and transmit to selected user equipments (UEs) within the node coverage area secondary uplink-downlink configurations over a plurality of secondary time intervals within the first time interval, wherein the secondary uplink-downlink configurations contain information on reconfigurable subframes within the first uplink-downlink configuration which can be reconfigured by the communications node for use by one or more of the selected UEs.
    Type: Application
    Filed: August 30, 2013
    Publication date: July 14, 2016
    Inventors: Phong NGUYEN, Yuanrong LAN
  • Patent number: 9338781
    Abstract: A method for transmitting and receiving a carrier segment in a wireless communications system, including a base station and a user equipment, is disclosed. The carrier segment includes a first band having a first bandwidth and a second band having a second bandwidth, wherein a first segment gap is disposed in a frequency domain between the first band and the second band.
    Type: Grant
    Filed: September 5, 2012
    Date of Patent: May 10, 2016
    Assignee: NEC Corporation
    Inventors: Phong Nguyen, Satha Sathananthan
  • Publication number: 20160112858
    Abstract: A method is disclosed for use in device-to-device (D2D) discovery in a wireless communication network. The network includes at least one base station and a plurality of D2D capable user equipments (D2D-UEs). The network also supports cellular communication and direct communication between D2D-UEs. The method includes transmitting D2D discovery system information (D2D-SIB) from the base station to D2D-UEs, wherein the D2D-SIB indicates frame(s)/subframe(s) for D2D-UEs to transmit D2D discovery request signal(s) and frame(s)/subframe(s) for D2D-UEs to transmit D2D discovery response signal(s). The method also includes transmitting one or more D2D discovery request signal(s) from one D2D-UE, and upon receipt of a said D2D discovery request signal by another D2D-UE, transmitting from said other D2D-UE one or more D2D discovery response signal(s). The D2D discovery request signal(s) and D2D discovery response signal(s) are transmitted on the frame(s)/subframe(s) indicated in the D2D-SIB.
    Type: Application
    Filed: July 9, 2014
    Publication date: April 21, 2016
    Applicants: NEC CORPORATION, NEC CORPORATION
    Inventors: Phong NGUYEN, Pushpika WIJESINGHE
  • Publication number: 20160037322
    Abstract: A wireless communication system (100) is disclosed in which UEs (120a-120c) can operate in a cellular mode wherein data is transmitted from one UE to another via one or more access nodes in a cellular network, and at least some UEs (120c) are D2D-UEs which can also operate in a direct communication mode wherein a pair of D2D-UEs transmit data directly from one to the other, wherein D2D-UEs operating in the direct communication mode maintain control signaling connection with the network and periodically change to the cellular mode and send CSI to the network, and the network uses CSI and/or network available geographical location information for D2D-UEs in determining whether to cause D2D-UEs to operate in the direct communication mode or the cellular mode.
    Type: Application
    Filed: April 9, 2014
    Publication date: February 4, 2016
    Applicant: NEC CORPORATION
    Inventors: Phong NGUYEN, Pushpika WIJESINGHE
  • Publication number: 20160007360
    Abstract: A method is disclosed for PHICH resource allocation in a wireless communication system that supports flexible TDD UL-DL configuration and in which different TDD UL-DL configurations are available and the TDD UL-DL configuration used by first UEs which operate according to the flexible TDD configuration can be different to the TDD UL-DL configuration used by second UEs which operate according to a long term TDD UL-DL configuration. The method comprising allocating a PHICH resource for both first UEs and second UEs according to LTE timing rules applicable to the TDD UL-DL configuration in use by second UEs.
    Type: Application
    Filed: February 28, 2014
    Publication date: January 7, 2016
    Applicant: NEC Corporation
    Inventors: Phong NGUYEN, Yuanrong LAN
  • Publication number: 20150312936
    Abstract: According to an exemplary embodiment, a control signalling method in a wireless communications system for reducing false positives, the method comprising: lengthening cyclic redundancy check (CRC) information by assigning at least one predetermined value to at least one downlink control information (DCI) field. As a result, it is possible to reduce the probability of false positive.
    Type: Application
    Filed: August 30, 2013
    Publication date: October 29, 2015
    Inventors: Phong NGUYEN, Yuanrong LAN
  • Publication number: 20150305000
    Abstract: A signalling method is disclosed for use in an advanced wireless communication network that supports FDD-TDD carrier aggregation (CA). The signalling method comprises configuring the UE (by establishing radio resource control (RRC) connection with the network through the first access node) for data transmission between the UE and the network through the first access node on the first duplex mode carrier as a primary component carrier (PCell), configuring the UE (via dedicated RRC signalling on the PCell) for data transmission between the UE and the network through the second access node on the second duplex mode carrier as a secondary component carrier (SCell), and performing scheduling for data transmission on the aggregated SCell using either self-scheduling or cross-carrier scheduling.
    Type: Application
    Filed: June 26, 2015
    Publication date: October 22, 2015
    Applicant: NEC Corporation
    Inventors: Phong NGUYEN, Yuanrong LAN
  • Publication number: 20150296497
    Abstract: A method according to the present invention is implemented in a base station used in a wireless communications system that supports flexible-TDD (flexible-time division duplex) UL-DL (uplink-downlink) configuration. The method includes configuring a first type of user equipment (UE) with a first type of configuration; configuring a second type of UE with a second type of configuration; and receiving from a user equipment a HARQ-ACK (hybrid automatic repeat request-acknowledgement) signal according to a DL association set. The DL association set includes: a first DL association set for a UL-DL TDD configuration used by the first type of UE; and a second DL association set for a reference UL-DL TDD configuration including a third DL association set for PUCCH resource mapping used by the second type of UE.
    Type: Application
    Filed: June 24, 2015
    Publication date: October 15, 2015
    Inventors: Phong NGUYEN, Yuanrong LAN
  • Publication number: 20150263829
    Abstract: There is provided methods for use in control signaling in advanced wireless communication systems that support flexible allocation of TDD UL-DL configurations. Where HARQ-ACK bundling is used, PDCCH/EPDCCH transmissions indicating DL SPS release and PDSCH transmissions with corresponding PDCCH/EPDCCH are scheduled only on DL and/or special subframes in a DL association set which are not after the subframe in the DL association set carrying an UL grant. Where HARQ-ACK multiplexing is used, the value of the DL assignment index (VDAIUL) is set to the number of subframes in the DL association set. Cross-subframe scheduling is also used.
    Type: Application
    Filed: May 29, 2014
    Publication date: September 17, 2015
    Applicant: NEC CORPORATION
    Inventors: Phong Nguyen, Yuanrong Lan
  • Publication number: 20150245379
    Abstract: There is provided a wireless communications system (1000) including a wireless device (100) and a wireless communications node (300). The wireless communications node (300) transmits in a reference signal sequence to the wireless device (100) a first code sequence (485) and a second code sequence (486). The first code sequence (485) carries information identifying a physical resource block that carries an enhanced physical downlink control channel (ePDCCH) and the second code sequence (486) carries information identifying a control format indicator.
    Type: Application
    Filed: February 18, 2013
    Publication date: August 27, 2015
    Inventor: Phong Nguyen
  • Publication number: 20150244485
    Abstract: A method is implemented in a base station used in a wireless communications system that supports flexible-TDD (flexible-time division duplex) UL-DL (uplink-downlink) configuration. The method includes configuring a first type of user equipment (UE) with a first type of configuration; configuring a second type of UE with a second type of configuration; and receiving from a user equipment a HARQ-ACK (hybrid automatic repeat request-acknowledgement) signal according to a DL association set. The DL association set includes: a first DL association set for a UL-DL TDD configuration used by the first type of UE; and a second DL association set for a reference UL-DL TDD configuration including a third DL association set for PUCCH resource mapping used by the second type of UE.
    Type: Application
    Filed: January 7, 2014
    Publication date: August 27, 2015
    Inventors: Phong Nguyen, Yuanrong Lan
  • Publication number: 20150230249
    Abstract: There is provided a method in a wireless base station (300), the method comprise transmitting, to a wireless device (100) having a reduced data bandwidth or a reduced control and data bandwidth, control and data signalling within a first bandwidth, in respective control and data regions, wherein signalling within the data region intended for the wireless device (100) is constrained within a second bandwidth which is narrower than the first bandwidth.
    Type: Application
    Filed: February 8, 2013
    Publication date: August 13, 2015
    Applicant: NEC Corporation
    Inventors: Phong Nguyen, Aziz Rahman, Kevin Lin
  • Publication number: 20150154876
    Abstract: A method and system for using Threat Imaging Projection (TIP) technology, and the operator testing data that it generates, in order to certify x-ray inspection system operators and thereby assure an acceptable and uniform level of operator performance. In a preferred configuration, the operator views x-ray images of objects on a screening system equipped with TIP technology. When the operator believes that a threat item image appears on the screening system, the operator indicates such via an indicating means. The system is capable of recording, storing and transmitting individual operator performance data relating to proper detections, missed detections, and false alarms, i.e., when an operator indicates that a threat item image appears when no such image actually appears on the screening system. The system preferably contains a library of various threat item images, e.g., guns, bombs, knives, etc., which are classified according to type of threat and difficulty of detection.
    Type: Application
    Filed: July 2, 2013
    Publication date: June 4, 2015
    Inventors: Peter Modica, Khai Le, Phong Nguyen
  • Patent number: 8932495
    Abstract: Embodiments of the invention generally provide hydrogen-doped and/or fluorine-doped transparent conducting oxide (TCO) materials and processes for forming such doped TCO materials. In one embodiment, a method for fabricating a doped TCO on a substrate surface includes forming a TCO material on a substrate, exposing the TCO material to a hydrogen plasma while forming a hydrogen-doped TCO material during an atmospheric pressure plasma (APP) process, wherein the hydrogen-doped TCO material contains atomic hydrogen at a concentration within a range from about 1 at % (atomic percent) to about 30 at %, and exposing the hydrogen-doped TCO material to a thermal annealing process. In another embodiment, the method includes exposing the TCO material to a fluorine plasma while forming a fluorine-doped TCO material during the APP process, wherein the fluorine-doped TCO material contains atomic fluorine at a concentration within a range from about 1 at % to about 30 at %.
    Type: Grant
    Filed: March 12, 2012
    Date of Patent: January 13, 2015
    Assignee: Clearist, Inc.
    Inventors: Paul Phong Nguyen, Scott Allen Jewhurst
  • Publication number: 20150009813
    Abstract: There is provided a method of controlling machine-type communications (MTC) in a wireless communications network (500). The method includes assigning (610) network identification to a first MTC device (20) of a specified access class. The specified access class substantially simultaneously requests network access to the wireless communications network (500) when a trigger event occurs.
    Type: Application
    Filed: January 24, 2013
    Publication date: January 8, 2015
    Applicant: NEC Corporation
    Inventor: Phong Nguyen
  • Publication number: 20140348090
    Abstract: There is provided a method implemented in a base station (11) of providing control information to a UE (13) over a wireless communications system (10). This method includes: scrambling (32) an E-PDCCH including the control information; modulating the E-PDCCH; mapping (34) the E-PDCCH on an allocated PRB; and transmitting (12) the E-PDCCH to the UE (13). The UE (13) communicates over the wireless communications system (10) according to the control information.
    Type: Application
    Filed: November 6, 2012
    Publication date: November 27, 2014
    Applicant: NEC CORPORATION
    Inventors: Phong Nguyen, Satha Sathananthan
  • Publication number: 20140341141
    Abstract: In a wireless communications network providing a machine-type communications (MTC) service, a portion of a frequency spectrum is allocated to a MTC device to communicate between a base station and other MTC devices. MTC system information is transmitted/received from/to the MTC device through the portion of the frequency spectrum and may include channel information. The portion of the frequency spectrum may be used for a Long Term Evolution (LTE) wireless communication network.
    Type: Application
    Filed: November 8, 2012
    Publication date: November 20, 2014
    Applicant: NEC Corporation
    Inventors: Phong Nguyen, Satha Sathananthan
  • Publication number: 20140301232
    Abstract: A method of measuring Channel State Information (CSI) in a multiple input/multiple output (MIMO) communication system including at least one base station (eNodeB) and at least one User Equipment (UE), the method including: receiving a Channel State Information Reference Signal (CSI-RS) carried in a sub-frame of a radio frame of the communication system at the at least one UE from the at least one eNodeB over at least one downlink. channel therebetween; extracting CSI-RS Resource Elements (RE) from the CSI-RS sub-frame; and using the extracted CSI-RS REs to perform downlink channel estimations for active pairs of receiving and transmitting antennas of the UE and the eNodeB respectively to derive the CSI.
    Type: Application
    Filed: September 19, 2012
    Publication date: October 9, 2014
    Applicant: NEC CORPORATION
    Inventors: Chaitanya Rao, Kevin Lin, Satha Sathananthan, Phong Nguyen
  • Publication number: 20140285866
    Abstract: Embodiments of the invention generally provide electrochromic devices and materials and processes for forming such electrochromic devices and materials. In one embodiment, an electrochromic device contains a lower transparent conductor layer disposed on a substrate, wherein an upper surface of the lower transparent conductor layer has a surface roughness of greater than 50 nm and a primary electrochromic layer having planarizing properties is disposed on the lower transparent conductor layer. The upper surface of the primary electrochromic layer has a surface roughness less than the surface roughness of upper surface of the lower transparent conductor layer, such as about 50 nm or less.
    Type: Application
    Filed: June 3, 2014
    Publication date: September 25, 2014
    Inventor: Paul Phong NGUYEN
  • Publication number: 20140226610
    Abstract: A method for transmitting and receiving a carrier segment in a wireless communications system, including a base station and a user equipment, is disclosed. The carrier segment includes a first band having a first bandwidth and a second band having a second bandwidth, wherein a first segment gap is disposed in a frequency domain between the first band and the second band.
    Type: Application
    Filed: September 5, 2012
    Publication date: August 14, 2014
    Applicant: NEC CORPORATION
    Inventors: Phong Nguyen, Satha Sathananthan