Patents by Inventor Jianguo Liu

Jianguo Liu 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: 20180279386
    Abstract: Embodiments of the present disclosure relate to a method and apparatus for listening before talk (LBT). A method of LBT is provided. The method comprises: determining an access priority class based on a plurality of types of traffic to be transmitted on a plurality of carriers; determining a LBT parameter based on the determined access priority class; and performing the LBT using the LBT parameter.
    Type: Application
    Filed: August 25, 2016
    Publication date: September 27, 2018
    Applicant: Alcatel Lucent
    Inventors: Jianguo Liu, Tao Tao, Yan Meng, Feng Han, Junrong Gu, Gang Shen
  • Publication number: 20180242363
    Abstract: Embodiments of the present disclosure relate to a method and a transmitter of implementing multiple-carrier Listen-Before-Talk in a wireless communication system. The method comprises: selecting a carrier group from a plurality of carriers as a synchronization carrier; determining a transmission synchronization boundary based on an extended CCA performed on the synchronization carrier; performing an initial CCA for the plurality of carriers; and determining that transmission is to be performed on at least one of the plurality of carriers based on at least one of the result of the extended CCA and the result of the initial CCA. The embodiments according to the present disclosure require only performing eCCA on the carrier group selected as the synchronization carrier. Compared with Wi-Fi, the LTE system can compete with Wi-Fi more fairly, and compared with the traditional solution it is more possible to obtain some carriers in the unlicensed spectrum.
    Type: Application
    Filed: July 26, 2016
    Publication date: August 23, 2018
    Applicant: Alcatel Lucent
    Inventors: Jianguo Liu, Yan Meng, Tao Tao, Gang Shen, Junrong Gu, Feng Han, Sigen Ye
  • Publication number: 20180152969
    Abstract: The present invention provides a method of triggering a LBT random backoff mechanism in LTE LAA, the method comprising: evaluating a current channel to obtain a first parameter characterizing a congestion state of the current channel; comparing the first parameter with a first threshold to obtain a first comparison result; and adapting a contention window size based on the first comparison result. The method further comprises comparing the first parameter with a second threshold to obtain a second comparison result; and adapting the contention window size based on the second comparison result. The first parameter is a packet error rate metric or a collision metric.
    Type: Application
    Filed: May 12, 2016
    Publication date: May 31, 2018
    Applicant: ALCATEL LUCENT
    Inventors: Tao Tao, Jianguo Liu, Feng Han, Yan Meng, Sigen Ye, Junrong Gu, Dandan Wang, Gang Shen
  • Patent number: 9966734
    Abstract: The present invention discloses a semiconductor laser comprising an optical waveguide structure which may include a lower waveguide layer, an active layer of multiple quantum wells and an upper waveguide layer, which are successively stacked from bottom to top, a grating layer being formed on upper portion of the active layer, wherein the upper waveguide layer, a cladding layer and a contact layer are formed as a ridge which has a light incidence end surface and a light output end surface, wherein a beam expanding structure is formed on one end of the output end surface. The beam expanding structure has a beam expanding portion with a shape gradually contracted inwards from the light output end surface. Preferably, the beam expanding portion has a horizontal divergence angle of 5° to 20°.
    Type: Grant
    Filed: April 25, 2017
    Date of Patent: May 8, 2018
    Assignee: Institute of Semiconductors, Chinese Academy of Sciences
    Inventors: Ninghua Zhu, Jianguo Liu, Jinjin Guo, Wei Chen
  • Publication number: 20180112198
    Abstract: The present disclosure relates to the identification of MCPIP1 as tumor suppressor. Methods of employing MCPIP1 to treat cancer are described.
    Type: Application
    Filed: March 30, 2016
    Publication date: April 26, 2018
    Applicant: Saint Louis University
    Inventors: Jianguo LIU, Huan NING, Wenbao LU
  • Publication number: 20180092050
    Abstract: The present invention relates to a method and an apparatus for occupying an unlicensed band channel, thereby avoiding misjudgment of an occupied unlicensed band state. A method for occupying an unlicensed band channel includes: a user equipment receiving a power increase rate of a reference signal transmission unit of an unlicensed band channel determined by a secondary cell (Scell) base station; the user equipment receiving, in the unlicensed band channel, a sub-frame of reference signal transmission unit level power distribution sent by the Scell base station; the user equipment decoding the power increase rate; and the user equipment using the power increase rate to process the sub-frame.
    Type: Application
    Filed: April 1, 2016
    Publication date: March 29, 2018
    Applicant: Alcatel Lucent
    Inventors: Junrong Gu, Feng Han, Jianguo Liu, Yan Meng, Jun Wang, Zhuo Wu, Gang Shen, Tao Tao
  • Publication number: 20170325263
    Abstract: The present invention relates to a method and an apparatus for implementing Listen-Before-Talk. According to an embodiment of the present invention, if the channel assessment does not stop at a boundary of the first symbol, the preamble comprises at least a first part, and if the channel assessment stops at the boundary of the first symbol, the preamble comprises a second part. And the first part is transmitted on a remaining portion of the first symbol until the end of the first symbol, and the second part is transmitted on at least one symbol following the first symbol. Besides, the data is transmitted to the receiving device in at least one symbol in the subframe in which the preamble transmission ends.
    Type: Application
    Filed: November 3, 2015
    Publication date: November 9, 2017
    Applicant: Alcatel Lucent
    Inventors: Jianguo LIU, Feng HAN, Yan MENG, Gang SHEN, Sigen YE, Jun WANG, Matthew BAKER
  • Publication number: 20170310080
    Abstract: The present invention discloses a semiconductor laser comprising an optical waveguide structure which may include a lower waveguide layer, an active layer of multiple quantum wells and an upper waveguide layer, which are successively stacked from bottom to top, a grating layer being formed on upper portion of the active layer, wherein the upper waveguide layer, a cladding layer and a contact layer are formed as a ridge which has a light incidence end surface and a light output end surface, wherein a beam expanding structure is formed on one end of the output end surface. The beam expanding structure has a beam expanding portion with a shape gradually contracted inwards from the light output end surface. Preferably, the beam expanding portion has a horizontal divergence angle of 5° to 20°.
    Type: Application
    Filed: April 25, 2017
    Publication date: October 26, 2017
    Inventors: Ninghua Zhu, Jianguo Liu, Jinjin Guo, Wei Chen
  • Patent number: 9769808
    Abstract: Embodiments of the present invention disclose methods and devices for allocating and detecting downlink control channel resources. The method for allocating downlink control channel resources comprises: allocating a resource area for enhanced Physical Downlink Control Channel, ePDCCH, localized transmission in a UE-specific way; and allocating at most one ePDCCH candidate for the ePDCCH localized transmission in each resource allocation granularity within the resource area. According to the embodiments of the present invention, the ePDCCH candidates at each aggregation level are distributed to radio resources sparsely so that sufficient options can be provided for resource allocation.
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: September 19, 2017
    Assignee: Alcatel Lucent
    Inventors: Zheng Liu, Qi Jiang, Jianguo Liu, Feng Han
  • Publication number: 20170181128
    Abstract: A multi-band channel encrypting switch control device is provided. The device comprises a transmission part and a receiving part. The transmission part comprises: a first controller to store a secret key and to send a digital signal; an encrypting unit to encrypt the digital signal; a multi-band transmitter to select a plurality of wavebands to transmit the encrypted signal on the plurality of wavebands under control of the secret key; and a switch. The receiving part comprises: a multi-band detector to receive the encrypted signal transmitted on the plurality of wavebands; a decrypting unit to decrypt the encrypted signal; and a second controller to store the secret key and to decide whether or not to issue a switch signal by processing the signal and making decisions using the process result. A transmission device, a receiving device, and a control method are also provided.
    Type: Application
    Filed: December 21, 2016
    Publication date: June 22, 2017
    Inventors: Ninghua ZHU, Wei CHEN, Jianguo LIU
  • Patent number: 9544881
    Abstract: Embodiments provide methods, apparatuses and computer programs for a mobile transceiver 100 and for a base station transceiver 200 in a mobile communication system. The mobile transceiver apparatus 10 comprises means for receiving 12 a first configuration message from the base station transceiver 200. The first configuration message comprises information on a control region for the mobile transceiver 100. The control region indicates radio resources used by the base station transceiver 200 to transmit a control message to the mobile transceiver 100 on a control channel. The means for receiving 12 is operable to receive a second configuration message from the base station transceiver 200. The second configuration message comprises information on a search space. The search space indicates a subset of radio resources of the control region and the search space comprises a spatial radio resource.
    Type: Grant
    Filed: January 30, 2012
    Date of Patent: January 10, 2017
    Assignee: Alcatel Lucent
    Inventors: Jianguo Liu, Zheng Liu, Qi Jiang
  • Patent number: 9490458
    Abstract: A battery is provided, comprising: a battery housing having at least one opening end; a battery cover sealing the at least one opening end; an electric core received in the battery housing, which comprises at least one heat-conducting tube having at least an end penetrating through the battery cover; and an electrolyte filled in a space formed by the battery housing with the battery cover.
    Type: Grant
    Filed: December 29, 2011
    Date of Patent: November 8, 2016
    Assignee: BYD Company Limited
    Inventors: Jianguo Liu, Zhiwei Tong
  • Patent number: 9264959
    Abstract: A communication method comprises: starting, at time T1, searching for a first communication network and reading a first network parameter; terminating, at time T2, the searching for the first communication network; determining, when the first communication network has been found, whether the reading of the first network parameter has been completed, when completed, matching the first network parameter with the first communication network, and registering with the first communication network; when the first communication network has not been found or when the first network parameter does not match the first communication network, stopping the reading of the first network parameter and starting reading the second network parameter when the type of network corresponding to the network parameter is inconsistent with the first network parameter and after reading, searching for the second communication network based on the second network parameter and registering with the found second communication network.
    Type: Grant
    Filed: August 25, 2014
    Date of Patent: February 16, 2016
    Assignees: Beijing Lenovo Software Ltd., Lenovo (Beijing) Limited
    Inventor: Jianguo Liu
  • Patent number: 9195945
    Abstract: User-preference datapoints are collected. At least some of these datapoints are associated with user-preference information about an item (e.g., a movie), and some of these datapoints are associated with user-preference information about an attribute (e.g., a movie genre or an actor). A profile of the user is created based, at least in part, on these datapoints. When a new datapoint is collected, the new datapoint is assigned a user-preference “score.” If, for example, the new datapoint does not come with an explicit user-preference rating, then the score is based on related item and attribute datapoints already in the profile. Depending upon the relationship of the new datapoint to the already existing datapoints, a confidence value is assigned to the user-preference score. The profile is then updated with the new datapoint along with its assigned score and confidence rating. The user profile can be used in performing any number of actions.
    Type: Grant
    Filed: March 11, 2013
    Date of Patent: November 24, 2015
    Assignee: ARRIS Technology, Inc.
    Inventors: Jianguo Liu, Mir F. Ali, Paul C. Davis, Guohua Hao
  • Patent number: 9143283
    Abstract: The invention relates to a method and apparatus for enhancing transmission of a downlink ACK/NACK signal in an LTE communication system. In order to attain the object of enhancing transmission of a downlink ACK/NACK signal, the invention proposes an enhanced design of the current PHICH and thus makes an enhanced PHICH (E-PHICH). The enhanced design is focused primarily upon the following aspects: the first aspect is to configure an E-PHICH in the legacy PDSCH and to transmit an ACK/NACK signal in the E-PHICH so that a UE demodulates the E-PHICH to obtain the ACK/NACK signal. The second aspect is to improve a PHICH-and-PUSCH association design by designing an implicit association between an E-PHICH index and a radio frequency resource occupied by a UL grant (in a legacy PDCCH or an E-PDCCH) and an explicit association between a PUSCH scheduled by a UL grant and an E-PDCCH respectively and to transmit an ACK/NACK signal in the E-PHICH so that a UE demodulates the E-PHICH to obtain the ACK/NACK signal.
    Type: Grant
    Filed: October 31, 2012
    Date of Patent: September 22, 2015
    Assignee: Alcatel Lucent
    Inventors: Zheng Liu, Qi Jiang, Jianguo Liu, Gang Shen
  • Patent number: 9107068
    Abstract: The herein described device and method facilitate inter-cell interference coordination (ICIC) in a relay-assistant cellular network by: determining, with respect to a sector, whether the sector is relay overloaded or neighboring sectors of the sector are relay overloaded according to load information of the neighboring sectors of the sector; enabling the sector to borrow relay resources released by the neighboring sectors of the sector if the sector is relay overloaded with respect to the neighboring sectors of the sector; and releasing relay resources allocated to the sector according to load information of the neighboring sectors of the sector if the neighboring sectors are relay overloaded with respect to the sector.
    Type: Grant
    Filed: February 12, 2010
    Date of Patent: August 11, 2015
    Assignee: Alcatel Lucent
    Inventors: Jun Wang, Dongyao Wang, Qi Jiang, Jiyong Pang, Jianguo Liu, Gang Shen
  • Publication number: 20150212226
    Abstract: The system for measuring electric resistivity around a borehole includes a tool body having a generally cylindrical shape, at least one transmitter at a first transmitter position on the tool body, an array of receivers on the tool body at a set distance from the first transmitter position, and a processor connected to the transmitter and the array. Each transmitter produces a set of five different measurement combinations with various resolution, coarseness, depth of investigation, and verification with the array. The array includes two pairs of receivers, and each receiver is an antenna, such as a coil in a groove with an antenna shield. The array has innovative placement of each receiver of the two pairs of receivers on the tool body relative to the transmitter for a more complete evaluation of a formation around a borehole.
    Type: Application
    Filed: January 26, 2015
    Publication date: July 30, 2015
    Inventors: Robert C. SMITH, Jianguo LIU
  • Patent number: 9059516
    Abstract: A 3D package device of a photonic integrated chip matching circuit, comprising: a first carrier substrate; a first microwave transmission line array formed by evaporation on the top surface of the first carrier substrate to provide bias voltages and high-frequency modulation signals to the photonic integrated chip; a second carrier substrate formed perpendicularly to the first carrier substrate or to have a certain angle with respect to the first carrier substrate, so as to constitute a 3D structure; a second microwave transmission line array formed by evaporation on the bottom surface of the second carrier substrate to match electrodes of the first microwave transmission line array, the second microwave transmission line array being soldered or sintered with the electrodes of the first microwave transmission line array; an electrode array formed by evaporation on a side surface or two opposite side surfaces of the second carrier substrate; and a microwave circuit.
    Type: Grant
    Filed: December 13, 2012
    Date of Patent: June 16, 2015
    Assignee: Institute of Semiconductors, Chinese Academy of Sciences
    Inventors: Ninghua Zhu, Jiasheng Wang, Jianguo Liu, Yu Liu
  • Publication number: 20150163713
    Abstract: The present disclosure provides a communication method and an electronic device.
    Type: Application
    Filed: August 25, 2014
    Publication date: June 11, 2015
    Inventor: Jianguo Liu
  • Publication number: 20150049700
    Abstract: Embodiments of the present invention disclose methods and devices for allocating and detecting downlink control channel resources. The method for allocating downlink control channel resources comprises: allocating a resource area for enhanced Physical Downlink Control Channel, ePD-CCH, localized transmission in a UE-specific way; and allocating at most one ePDCCH candidate for the ePDCCH localized transmission in each resource allocation granularity within the resource area. According to the embodiments of the present invention, the ePDCCH candidates at each aggregation level are distributed to radio resources sparsely so that sufficient options can be provided for resource allocation.
    Type: Application
    Filed: March 18, 2013
    Publication date: February 19, 2015
    Applicant: Alcatel Lucent
    Inventors: Zheng Liu, Qi Jiang, Jianguo Liu, Feng Han