Patents by Inventor Lei Du

Lei Du 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).

  • Access control of relay node with closed subscriber group
    Patent number: 9338655
    Abstract: There are provided measures for access control of a relay node with a closed subscriber group, said measures exemplarily comprising retrieval of setting information relating to a closed subscriber group of a base station function of a relay node, said relay node requesting access to a relay-enhanced cellular system via a donor base station, acquisition of setting information relating to a closed subscriber group of the donor base station, and execution of access control of the base station function of the relay node based on the setting information relating to the closed subscriber groups of the base station function of the relay node and the donor base station.
    Type: Grant
    Filed: December 28, 2010
    Date of Patent: May 10, 2016
    Assignee: Nokia Solutions and Networks Oy
    Inventors: Shun Liang Zhang, Simone Redana, Bernhard Raaf, Lei Du
  • Methods and apparatus for radio resource control
    Patent number: 9338736
    Abstract: Improved systems and techniques for controlling access to network resources. A base station broadcasts extended access barring (EAB) and access class barring (ACB) information. Upon a determination by a user equipment that the user equipment requires service from the base station, the user equipment determines its EAB category and call type. The user equipment receives the EAB and ACB information broadcast by the base station and determines if it is subject to EAB based on its EAB category. If the user equipment is not subject to EAB, the user equipment determines if its call type is subject to ACB and, if the call type is subject to ACB, applies access class barring based on its call type.
    Type: Grant
    Filed: February 2, 2015
    Date of Patent: May 10, 2016
    Assignee: CELLULAR COMMUNICATIONS EQUIPMENT LLC
    Inventors: Yi Zhang, Robert Zaus, Woonhee Hwang, Lei Du, Devaki Chandramouli
  • Access Node Dormancy
    Publication number: 20160066264
    Abstract: A technique including determining that a first access node serving a communication device is currently in a dormant, first state in which said first access node is not receiving radio transmissions; and controlling a radio transmitter or radio transceiver at said communication device to transmit a radio signal that triggers at least one second access node to alert said first access node of a request for said first access node to switch from said first state to a second state in which said first access node receives radio transmissions.
    Type: Application
    Filed: April 3, 2013
    Publication date: March 3, 2016
    Inventors: De Shan MIAO, Naizheng Zheng, Xiaoyi WANG, Lei DU
  • Signalling Procedures for Data Transmissions
    Publication number: 20160044713
    Abstract: A technique including deciding at a communication device between different types of signalling procedure for a data transmission to a network, based on one or more rules outside the control of the communication device; wherein said different types of signalling procedure have different signalling overhead profiles.
    Type: Application
    Filed: March 12, 2013
    Publication date: February 11, 2016
    Applicant: Nokia Solutions and Networks Oy
    Inventors: Lei DU, Yan Ji ZHANG, Woonhee HWANG
  • Mechanisms addressing dynamic component carrier change in relay systems
    Patent number: 9246662
    Abstract: The present invention proposes methods and devices to further improve relay systems operating on the basis of carrier aggregation on the access as well as on the backhaul link.
    Type: Grant
    Filed: November 4, 2011
    Date of Patent: January 26, 2016
    Assignee: NOKIA SOLUTIONS AND NETWORKS OY
    Inventors: Shun Liang Zhang, Lei Du, Simone Redana
  • Mask plate and manufacturing method thereof
    Patent number: 9223198
    Abstract: Embodiments of the present invention disclose a mask plate and a manufacturing method thereof. The mask plate includes a mask plate body and a transmissive member, wherein the mask plate body has a transmissive part and a non-transmissive part adjacent to the transmissive part, the transmissive member is disposed corresponding to the transmissive part of the mask plate body, the absorbance of the transmissive member progressively increases in a direction away from a center region of the transmissive member to a edges region of the transmissive member close to the non-transmissive part.
    Type: Grant
    Filed: October 31, 2013
    Date of Patent: December 29, 2015
    Assignees: HEFEI BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xiangyang Xu, Liyun Deng, Minsu Kim, Lei Du, Kai Wang, Min Zhang
  • Random access preamble transmission design with multiple available random access channel resources
    Patent number: 9185721
    Abstract: A method for use of a RA preamble with multiple available RACH resources is described. The method includes allocating resources including a plurality of RACH resources for a UE. Information that indicates a dedicated preamble and the allocated resources is sent to the UE. The UE receives the information. A response including the dedicated preamble is generated at the UE. The method also includes the UE sending the response over at least two of the allocated resources. In response to receiving at least one response, a message is transmitted to the UE. Apparatus and computer readable media are also described.
    Type: Grant
    Filed: April 28, 2014
    Date of Patent: November 10, 2015
    Assignee: Nokia Solutions and Networks Oy
    Inventors: Lei Du, Min Huang, Yong Teng
  • Method, apparatus, and related computer program product for load balancing in a relay network
    Patent number: 9155012
    Abstract: It is disclosed a method (and related apparatus) including deciding a handover of a terminal from a relaying source entity to a relaying target entity based on information related to at least one link between the relaying source and target entities and source and target network access entities.
    Type: Grant
    Filed: April 24, 2009
    Date of Patent: October 6, 2015
    Assignee: Nokia Solutions and Networks Oy
    Inventors: Simone Redana, Bernhard Raaf, Juergen Michel, Vinh Van Phan, Oumer Teyeb, Ingo Viering, Martin Doettling, Lei Du
  • THIN FILM TRANSISTOR AND METHOD FOR MANUFACTURING THE SAME, ARRAY SUBSTRATE AND DISPLAY DEVICE
    Publication number: 20150279869
    Abstract: A thin film transistor and a method for manufacturing the same, an array substrate and a display device that can prevent the semiconductor layer in a channel region from damage. The thin film transistor includes a gate electrode, a gate insulating layer, a semiconductor layer, an insulator layer, and source/drain electrodes, the insulator layer is provided on the semiconductor layer, covers channel regions of the source/drain electrodes, and is formed of a metal oxide insulator. In this thin film transistor, when water vapor from the air penetrates, the insulator layer formed of the metal oxide insulator will firstly reacts with the water vapor to prevent the metal oxide semiconductor in the channel region from damage.
    Type: Application
    Filed: June 18, 2013
    Publication date: October 1, 2015
    Inventor: Lei Du
  • METHODS AND APPARATUS FOR DEVICE MONITORING
    Publication number: 20150264619
    Abstract: Systems and techniques for detecting movement of machine type communication devices. An allowed location area is configured for one or more machine type communication devices, and a machine type communication device, upon detecting movement between an area outside its allowed location area and an area inside its allowed location area, notifies a network of the movement.
    Type: Application
    Filed: July 27, 2012
    Publication date: September 17, 2015
    Applicant: Nokia Solutions and Networks Oy
    Inventors: Yi Zhang, Lei Du, Devaki Chandramouli
  • CONFIGURING WIRELESS SERVICE
    Publication number: 20150257145
    Abstract: Methods and apparatus for controlling a wireless service provided for a communication device by a network is disclosed. A communication device served by at least one node of a network determines at least one desired characteristic of the wireless service and thereafter triggers configuration of the wireless service by sending from the communication device to the network a message containing information that is based on the at least one determined desired characteristic. A node of the network receives the message, and in response thereto, causes configuration of the wireless service based on the received information.
    Type: Application
    Filed: September 14, 2012
    Publication date: September 10, 2015
    Applicant: NOKIA SOLUTIONS AND NETWORKS OY
    Inventors: Yong Teng, Lei Du
  • Managing an Active Timer in a Power Save State
    Publication number: 20150223198
    Abstract: A method includes determining at a network node whether paging to be sent from the network node toward an intermediate node for further forwarding to a user equipment will arrive at the user equipment before the user equipment transitions from an idle state to a power save state. The method includes sending or not sending the paging toward the intermediate node based on the determining. Another method includes performing an estimation at a network access node providing wireless network access to a user equipment of how long it will take before a next paging frame or paging occasion occurs for the user equipment, and sending to a network node a value indicative of the estimation. Apparatus, computer programs, and computer program products are also disclosed corresponding to the methods.
    Type: Application
    Filed: January 31, 2014
    Publication date: August 6, 2015
    Applicant: Nokia Solutions and Networks Oy
    Inventors: Lei Du, Woonhee Hwang
  • METHODS AND APPARATUS FOR RADIO RESOURCE CONTROL
    Publication number: 20150208334
    Abstract: Improved systems and techniques for controlling access to network resources. A base station broadcasts extended access barring (EAB) and access class barring (ACB) information. Upon a determination by a user equipment that the user equipment requires service from the base station, the user equipment determines its EAB category and call type. The user equipment receives the EAB and ACB information broadcast by the base station and determines if it is subject to EAB based on its EAB category. If the user equipment is not subject to EAB, the user equipment determines if its call type is subject to ACB and, if the call type is subject to ACB, applies access class barring based on its call type.
    Type: Application
    Filed: February 2, 2015
    Publication date: July 23, 2015
    Inventors: Yi Zhang, Robert Zaus, Woonhee Hwang, Lei Du, Devaki Chandramouli
  • Data Transmission
    Publication number: 20150195831
    Abstract: A method and apparatus is provided wherein a request for data is received. It is determined if the request is associated with a relatively small data transmission. The requested data is transmitted in accordance with a first transmission method when it is determined that the request is associated with a relatively small data transmission.
    Type: Application
    Filed: August 3, 2012
    Publication date: July 9, 2015
    Applicant: Nokia Solutions and Networks Oy
    Inventors: Lei Du, Woonhee Hwang, Yi Zhang
  • INTENT-BASED USER EXPERIENCE
    Publication number: 20150169285
    Abstract: Techniques that facilitate the accomplishment of tasks within applications are presented. An intent-based user experience is available through receiving a natural language statement of intent from a user regarding use of an application, such as a productivity application. The graphical user interface for the user can be configured and reconfigured based on the user's intent; thus creating a task-oriented user interface. The user's intent can be determined through classifying and/or mapping the natural language statement of intent to particular tasks, which can then be associated with one or more tools and information that can be used to accomplish the tasks. The one or more tools and information can be surfaced to the user in the graphical user interface.
    Type: Application
    Filed: December 18, 2013
    Publication date: June 18, 2015
    Applicant: Microsoft Corporation
    Inventors: LORRISSA REYES, TYLER M. PEELEN, LEI DU, WILLIAM B. DOLAN, BERNHARD S.J. KOHLMEIER, PRADEEP CHILAKAMARRI, ANNIE Y. BAI
  • METHOD AND USER EQUIPMENT FOR MANAGING APPLICATION PROGRAMS
    Publication number: 20150160829
    Abstract: The present invention provides a method and a user device for managing application. The method includes: detecting the touch event which induced by a user touching icons displayed in a display interface; determining the area of the display interface which the first icon located in, when the touch event corresponding to the first icon is detected and the detected touch event persists a scheduled time; displaying a second icon in the determined area; detecting the movement path which induced by the user dragging the first icon through the application corresponding to the second icon, when the first icon moves into the location of the second icon. The distance of moving the first icon will not be very long and easy to operate, when the first icon is moved into the location of the second icon and the application corresponding to the first icon is deleted.
    Type: Application
    Filed: February 19, 2015
    Publication date: June 11, 2015
    Inventor: Lei DU
  • Extended access barring for CSG cells
    Publication number: 20150141007
    Abstract: It is provided an apparatus, comprising CSG (closed subscriber group) determining means adapted to determine one of plural CSG types to which the apparatus belongs, based on a CSG entry stored by the apparatus, wherein the plural CSG types are related to a closed subscriber group advertisement received from a cell of a base station; selecting means adapted to select one of plural EAB (extended access barring) parameter sets based on the determined one of the plural CSG types, wherein the plural EAB parameter sets are received from the cell and wherein each of the plural EAB parameter sets is related to one of the plural CSG types; applying means adapted to apply extended access barring to an access of the apparatus to the cell based on the selected EAB parameter set.
    Type: Application
    Filed: May 14, 2012
    Publication date: May 21, 2015
    Applicant: Nokia Solutions and Networks Oy
    Inventors: Lei Du, Benoist Pierre Sebire, Guillaume Decarreau
  • Light emitting diode driver systems and associated methods of control
    Patent number: 9035566
    Abstract: Light emitting diode (LED) dimming and driver systems and associated methods of control are disclosed herein. In one embodiment, a system comprises a PFC stage and an LED driver stage. The LED driver stage comprises an isolated converter and a controller responsive to a dimming signal to dim LED strings for backlight. The controller also regulates an output current of the isolated converter.
    Type: Grant
    Filed: March 15, 2011
    Date of Patent: May 19, 2015
    Assignee: Monolithic Power Systems, Inc.
    Inventors: Lei Du, Bairen Liu, Kaiwei Yao, Junming Zhang, Yuancheng Ren
  • PHYSICAL UPLINK CONTROL CHANNEL OPTIMIZATION
    Publication number: 20150098406
    Abstract: Communication systems, such as the long tem evolution (LTE) of the third generation partnership project (3GPP) may benefit from various optimizations, such as optimizations related to smart phone technology. More particularly, diverse data applications may benefit from enhancements such as physical uplink control channel optimization. According to certain embodiments, a method can include configuring, with radio resource control signaling, a physical uplink control channel resource to one or more devices. The method can also include indicating to each device of the one or more devices, which part of the resource to use.
    Type: Application
    Filed: May 15, 2013
    Publication date: April 9, 2015
    Applicant: NOKIA SOLUTIONS AND NETWORKS OY
    Inventors: De Shan Miao, Alfredo Rocchetti, Lei Du
  • Light emitting element driving circuit
    Patent number: 8981666
    Abstract: The present disclosure discloses a light emitting element driving circuit. In one embodiment the light emitting element driving circuit may comprise a power conversion circuit and a current balancing circuit. In other embodiment the light emitting element driving circuit may further comprise other modules integrated and interacting with the power conversion circuit and the current balancing circuit, such as fault detection and protection circuits, status indication circuits and phase-shift PWM dimming circuits. In other embodiment, the present disclosure further discloses a current balancing circuit. In other embodiment, the present disclosure further discloses a fault detection and protection circuit. In still other embodiment, the present disclosure further discloses a phase-shift PWM dimming circuit.
    Type: Grant
    Filed: July 6, 2011
    Date of Patent: March 17, 2015
    Assignee: Monolithic Power Systems, Inc.
    Inventors: Bo Yu, Yuancheng Ren, Lei Du, Naixing Kuang, Zhijiang Yang