Patents by Inventor Zhaojun LI

Zhaojun LI 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: 11948087
    Abstract: The present disclosure provides a drop impact prediction method and system for heavy equipment airdrop based on a neural network. The drop impact prediction method includes the following steps: S1: acquiring a plurality of sets of sample data by using a finite element model for drop simulation of heavy equipment airdrop; S2: determining structural parameters of a BP neural network, and pre-processing the structural parameters; S3: constructing a BP neural network model; and S4: predicting a drop impact situation of heavy equipment airdrop in an actual application process by using the trained BP neural network model.
    Type: Grant
    Filed: October 26, 2023
    Date of Patent: April 2, 2024
    Assignee: Huazhong University of Science and Technology
    Inventors: Renfu Li, Zhaojun Xi, Zhongda Wu, Yichao Li, Zhenlin Mei
  • Publication number: 20240082966
    Abstract: A cross-coupling control method for moving beam of gantry machine tool is disclosed, which relates to the technical field of CNC machine tool control. The cross-coupling control method includes: Step 1: establishing a crossbeam dynamics model considering a ram on the crossbeam, and at the same time simplifying the model for an observer design; step 2: realizing a PID control parameter adjustment of motors at both ends in accordance with a method of parameter tuning of a unilateral servo control system; using a servo system with the same control parameters to jointly drive the crossbeam up and down, realizing the synchronous control and realizing PID control parameter tuning for both end motors. The disclosure not only reduces the synchronization error caused by the torsion of the crossbeam, but also solves the synchronization error caused by the asymmetric load on both sides, and improves the system robustness and stability.
    Type: Application
    Filed: November 14, 2023
    Publication date: March 14, 2024
    Inventors: Chuanhai Chen, Zhifeng Liu, Jinyan Guo, Tongtong Jin, Xinyuan He, Shuo Zhao, Baobao Qi, Chunshi Liu, Zhaojun Yang, Zhijie Li, Chunlei Hua, Liang Zhang, Haoming Yan
  • Patent number: 11541258
    Abstract: The present invention discloses a fire extinguishing system for a battery pack, including a detection control apparatus, a fire suppression apparatus, and a hydrant water extinguishing apparatus. The detection control apparatus is disposed inside or outside a battery pack. The fire suppression apparatus and the hydrant water extinguishing apparatus are disposed outside the battery pack. The detection control apparatus is connected to the fire suppression apparatus. The hydrant water extinguishing apparatus is connected to the fire suppression apparatus. Beneficial effects: It is ensured that initial fire can be suppressed and later reignition can be resolved, so that fire extinguishing is adequate. Fire is directly extinguished at a core position inside the battery pack. An exhaust filter device gains valuable time after initial fire extinguishing.
    Type: Grant
    Filed: December 23, 2020
    Date of Patent: January 3, 2023
    Assignee: YANTAI CHUNGWAY NEW ENERGY TECHNOLOGY CO., LTD.
    Inventors: Lilei Zhang, Yifeng Zhao, Mingming Li, Yanwei Bi, Zhaojun Li, Xiaotong Shi
  • Publication number: 20220193471
    Abstract: The present invention discloses a fire extinguishing system for a battery pack, including a detection control apparatus, a fire suppression apparatus, and a hydrant water extinguishing apparatus. The detection control apparatus is disposed inside or outside a battery pack. The fire suppression apparatus and the hydrant water extinguishing apparatus are disposed outside the battery pack. The detection control apparatus is connected to the fire suppression apparatus. The hydrant water extinguishing apparatus is connected to the fire suppression apparatus. Beneficial effects: It is ensured that initial fire can be suppressed and later reignition can be resolved, so that fire extinguishing is adequate. Fire is directly extinguished at a core position inside the battery pack. An exhaust filter device gains valuable time after initial fire extinguishing.
    Type: Application
    Filed: December 23, 2020
    Publication date: June 23, 2022
    Inventors: Lilei Zhang, Yifeng Zhao, Mingming Li, Yanwei Bi, Zhaojun Li, Xiaotong Shi
  • Patent number: 10784998
    Abstract: A buffer status reporting scheme for a terminal (10) wishing to transmit data simultaneously in multiple RATs of a wireless communication network, which enables the co-ordination of multiple base stations (12, 14) of different RATs (e.g. LTE eNB, UMTS base station, WiFi access point, etc.) with the assistance of the terminal (10) in order to achieve efficient radio resource scheduling for multi-RAT multi-flow aggregation in uplink. A radio bearer is configured for multi-RAT multi-flow aggregation by the network, and multiple logical channel IDs are assigned to this RB that may be associated with different RATs. Logical channels associated with a certain RAT (or a given set of RATs) may be grouped into one logical channel group for radio resource scheduling reason. The terminal (10) performs buffer status reporting, according to the configuration, on all involved RATs and sends reports/indications to one or more involved base stations (12.14).
    Type: Grant
    Filed: June 1, 2017
    Date of Patent: September 22, 2020
    Assignee: FUJITSU LIMITED
    Inventors: Zhaojun Li, Timothy Moulsley, Paul Bucknell, Milos Tesanovic
  • Publication number: 20200029261
    Abstract: An information acquiring apparatus, applicable to a first base station, including: a first receiver receives information transmitted by at least one of a user equipment, a second base station and a third base station; wherein, the information comprises relevant information to determine cell types of at least one of the first base station, the second base station and the third base station when handover initiation occurs in the user equipment.
    Type: Application
    Filed: September 30, 2019
    Publication date: January 23, 2020
    Applicant: FUJITSU CONNECTED TECHNOLOGIES LIMITED
    Inventors: Lianhai WU, Zhaojun LI, Weiwei WANG, Haibo XU
  • Publication number: 20190364479
    Abstract: An information interaction method, applicable to a first base station by which coverage of a cell is to be changed, the information interaction method includes: notifying by the first base station to a second base station that the coverage of the cell is to be changed by using a new information element different from ServedCellsToAdd, the new information element is used to indicate that the coverage of the cell is to be changed including that a cell is to be closed or a cell being to be shrunk in coverage.
    Type: Application
    Filed: August 7, 2019
    Publication date: November 28, 2019
    Applicant: FUJITSU CONNECTED TECHNOLOGIES LIMITED
    Inventors: Lianhai WU, Zhaojun LI, Weiwei WANG, Haibo XU
  • Patent number: 10420133
    Abstract: A wireless communication method wherein: a terminal (1) transmits first and second data streams to a network; wherein the first data stream is associated with both a first cell and a second cell of a plurality of cells (10, 20, 22, 24) serving the terminal, and the second data stream is associated with the second cell; and the terminal (1) transmits at least one signalling message including first information relating to data to be sent in the first data stream and/or second information relating to data to be sent in the second data stream to at least one of the first cell and the second cell based on predetermined rules corresponding to association between cells and data streams.
    Type: Grant
    Filed: January 24, 2018
    Date of Patent: September 17, 2019
    Assignee: FUJITSU LIMITED
    Inventors: Yiwei Fang, Timothy Moulsley, Zhaojun Li, Paul Bucknell
  • Patent number: 10219148
    Abstract: A wireless communication system includes a virtual terminal formed from one or more independent devices, a terminal management entity for managing the virtual terminal. The devices may be independent physical devices (smartphones, tablet computers), virtual machines/modules of physical devices, or a combination of both. The virtual terminal and terminal management entity communicate via a base station and/or access point. The terminal management entity creates a service ID for a service to be provided to the virtual terminal, the service ID being shared by the one or more independent devices, each having its own device ID. The TME forms an association of the virtual terminal with the network through use of a multi-homing transport protocol such as SCTP, the association supporting the service by using the service ID. For service delivery, paging and handover purposes the devices of the virtual terminal are treated as a single entity by the TME.
    Type: Grant
    Filed: February 23, 2016
    Date of Patent: February 26, 2019
    Assignee: FUJITSU LIMITED
    Inventors: Zhaojun Li, Mick Wilson, Timothy Moulsley
  • Patent number: 10117175
    Abstract: A method of implementing multiple radio access technologies, RATs, by a multi-RAT wireless communication network and a wireless communication apparatus. The multi-RAT wireless communication network transmits, to the wireless communication apparatus, a signal relating to a second RAT using a first RAT. The wireless communication apparatus uses a first radio communication module configured to support the first RAT to receive the signal, and activates a second radio communication module configured to support the second RAT from a power saving in order to perform a function. The first RAT generally has lower power consumption in use at the wireless communication apparatus than that of the second RAT.
    Type: Grant
    Filed: July 25, 2017
    Date of Patent: October 30, 2018
    Assignee: FUJITSU LIMITED
    Inventors: Zhaojun Li, Hind Chebbo
  • Patent number: 10075856
    Abstract: A method and apparatus for analyzing cause of link failure, includes: receiving, by a base station where the user equipment is present when a link failure is observed by the user equipment, identification information transmitted by other base stations or the user equipment, the identification information including: identification associated with the user equipment and/or identification of the user equipment in the base station; and determining, by the base station when it determines that the identification information is stored in the base station, that the link failure is resulted from a handover preparation failure.
    Type: Grant
    Filed: August 24, 2016
    Date of Patent: September 11, 2018
    Assignee: FUJITSU LIMITED
    Inventors: Weiwei Wang, Zhaojun Li, Ningjuan Chang, Haibo Xu
  • Patent number: 10064071
    Abstract: A method and apparatus for analyzing cause of link failure, includes: receiving, by a base station where the user equipment is present when a link failure is observed by the user equipment, identification information transmitted by other base stations or the user equipment, the identification information including: identification associated with the user equipment and/or identification of the user equipment in the base station; and determining, by the base station when it determines that the identification information is stored in the base station, that the link failure is resulted from a handover preparation failure.
    Type: Grant
    Filed: July 2, 2014
    Date of Patent: August 28, 2018
    Assignee: FUJITSU LIMITED
    Inventors: Weiwei Wang, Zhaojun Li, Ningjuan Chang, Haibo Xu
  • Publication number: 20180152963
    Abstract: A wireless communication method wherein: a terminal (1) transmits first and second data streams to a network; wherein the first data stream is associated with both a first cell and a second cell of a plurality of cells (10, 20, 22, 24) serving the terminal, and the second data stream is associated with the second cell; and the terminal (1) transmits at least one signalling message including first information relating to data to be sent in the first data stream and/or second information relating to data to be sent in the second data stream to at least one of the first cell and the second cell based on predetermined rules corresponding to association between cells and data streams.
    Type: Application
    Filed: January 24, 2018
    Publication date: May 31, 2018
    Applicant: FUJITSU LIMITED
    Inventors: Yiwei FANG, Timothy MOULSLEY, Zhaojun LI, Paul BUCKNELL
  • Patent number: 9967066
    Abstract: A scheme for the co-ordination of multiple base stations of different RATs (radio access technologies), such as a LTE eNB, UMTS base station, and WiFi access point with the assistance of the terminals in order to achieve efficient radio resource scheduling for multi-RAT multi-flow aggregation in the downlink. At the network side, multi-RAT flows (RB11) share the same PDCP Entity, (PDCP Entity) while each has independent RLC/MAC (RAT1 RLC Entity, RAT2 RLC Entity). The terminal (UE1) performs necessary measurements on all involved RATs, depending on the requirements of different RATs, and sends measurement reports/indication to all involved base stations. Based on the measurement report as well as pre-defined rules/policy, a decision is made on which RAT should be used for next DL transmission or next period of DL transmission.
    Type: Grant
    Filed: February 11, 2015
    Date of Patent: May 8, 2018
    Assignee: FUJITSU LIMITED
    Inventors: Zhaojun Li, Timothy Moulsley
  • Patent number: 9924532
    Abstract: The invention provides for association of data streams (and/or logical channels) with individual carriers (cells), and independent buffer status reporting per carrier for terminals with more than one uplink carrier configured. In a “Small Cell” scenario for 3GPP LTE, a terminal may be simultaneously served by a macro cell and one or more small cells. These may operate at different frequencies, have different traffic loading and support different QoS (Quality of Service). The invention allows independent control of traffic on the uplinks to the macro cell and the small cells, which can be used to optimize the user experience in relation to the available resources at any given time/location, and allows particular data to be routed via particular cells.
    Type: Grant
    Filed: December 30, 2015
    Date of Patent: March 20, 2018
    Assignee: FUJITSU LIMITED
    Inventors: Yiwei Fang, Timothy Moulsley, Zhaojun Li, Paul Bucknell
  • Patent number: 9913176
    Abstract: Embodiments of the present disclosure provide a UE context identification method, UE and a base station. The identification method includes: obtaining a first terminal identity of the UE by the first base station, wherein the first terminal identity is transmitted by the UE to a network side after connection failure; finding a second terminal identity corresponding to the second base station in a context of the UE according to the first terminal identity; and transmitting to the second base station a handover report containing the second terminal identity, so that the second base station finds the context of the UE according to the second terminal identity. With the embodiments of the present disclosure, it is ensured that the base station is able to identify a context of the UE.
    Type: Grant
    Filed: January 6, 2015
    Date of Patent: March 6, 2018
    Assignee: FUJITSU LIMITED
    Inventors: Weiwei Wang, Zhaojun Li, Hua Zhou
  • Patent number: 9907068
    Abstract: Embodiments of the present disclosure provide a method for negotiating inter-eNB functions, an apparatus and system therefor. The method includes: transmitting, by an eNB, a backhaul type of the eNB, and/or a backhaul type of at least one neighboring eNB of the eNB, to another eNB negotiating inter-eNB functions with the eNB, so that the other eNB negotiates with the eNB for inter-eNB functions. With the method and apparatus of the embodiments of the present disclosure, the eNBs may be assisted in negotiating inter-eNB functions, thereby providing better services to UEs.
    Type: Grant
    Filed: July 2, 2015
    Date of Patent: February 27, 2018
    Assignee: FUJITSU LIMITED
    Inventors: Weiwei Wang, Zhaojun Li
  • Publication number: 20170325162
    Abstract: A method of implementing multiple radio access technologies, RATs, by a multi-RAT wireless communication network and a wireless communication apparatus. The multi-RAT wireless communication network transmits, to the wireless communication apparatus, a signal relating to a second RAT using a first RAT. The wireless communication apparatus uses a first radio communication module configured to support the first RAT to receive the signal, and activates a second radio communication module configured to support the second RAT from a power saving in order to perform a function. The first RAT generally has lower power consumption in use at the wireless communication apparatus than that of the second RAT.
    Type: Application
    Filed: July 25, 2017
    Publication date: November 9, 2017
    Applicant: Fujitsu Limited
    Inventors: Zhaojun LI, Hind Chebbo
  • Patent number: 9801168
    Abstract: A wireless communication method in which a user equipment receives downlink signals from at least first and second cells, said downlink signals include respective reference signals transmitted from each of the cells; and a channel jointly transmitted by the cells; the user equipment utilizing a joint amplitude and/or phase reference derived from the respective reference signals to demodulate the jointly transmitted channel.
    Type: Grant
    Filed: June 26, 2013
    Date of Patent: October 24, 2017
    Assignee: FUJITSU LIMITED
    Inventors: Timothy Moulsley, Zhaojun Li, Paul Bucknell, Chenxi Zhu
  • Patent number: 9794851
    Abstract: Providing mobility support of UEs that are served by mobile relay base stations, by providing handover of a UE for data traffic only between two mobile relay base stations. Exchanging information between the source and target mobile relay stations of the concerned UE in handover, and/or the corresponding donor base stations if applicable. The handover is triggered by any of the following: based on UE's measurement report, the signal quality of a neighbor cell is better than the current serving cell; based on the measurement of the serving mobile relay base station, the signal quality of the link to the UE is worse than a certain threshold; or based on the measurement of the serving mobile relay base station, the signal quality of a neighbor cell is much better than the current donor base station.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: October 17, 2017
    Assignee: FUJITSU LIMITED
    Inventors: Zhaojun Li, Sunil Keshavji Vadgama