Patents by Inventor Dajun Zhang

Dajun Zhang 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: 20210345147
    Abstract: A location resource coordinating method, a location resource coordinating device, a network node, a UE, and a base station are provided. The location resource coordinating method includes: sending location resource coordination information to a base station before performing location measurement for a serving UE; the location resource coordination information includes identity information of a target cell of the base station, and carries dedicated location resource information configured for the target cell, or the location resource coordination information includes the identity information of a target cell for which the base station activates a location resource, and instructs the base station to activate pre-configured dedicated location resource information; the base station is a base station related to the serving UE.
    Type: Application
    Filed: August 30, 2019
    Publication date: November 4, 2021
    Applicant: DATANG MOBILE COMMUNICATIONS EQUIPMENT CO.,LTD.
    Inventors: Dajun ZHANG, Haiyang QUAN, Ming AI
  • Publication number: 20210297982
    Abstract: The present disclosure provides a positioning management method, a positioning management device, an NG-RAN node and a core network node. The positioning management method includes: receiving a positioning request message from the core network node; performing positioning measurement in accordance with the positioning request message, so as to acquire a positioning measurement result; and acquiring position information about a target UE in accordance with the positioning measurement result, and feeding the position information back to the core network node.
    Type: Application
    Filed: August 30, 2019
    Publication date: September 23, 2021
    Applicant: DATANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD.
    Inventors: Dajun ZHANG, Haiyang QUAN, Ming AI
  • Patent number: 11129086
    Abstract: Disclosed are a system message notification and sending method and apparatus. The method comprises: a CU determines system message relevant information; and the CU sends the system message relevant information to a DU. The DU receives the system message relevant information sent by the CU; and the DU notifies a terminal of the information. The present application provides an access control and system message processing solution under a CU-DU architecture, and a CU can provide sufficient auxiliary information to a DU, and thus the DU can generate suitable system information according to same. The two coordinate to provide a service to a UE, and the system efficiency is improved and a good user experience is ensured.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: September 21, 2021
    Assignee: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY
    Inventors: Dajun Zhang, Aijuan Liu, Ying Wang
  • Publication number: 20210211898
    Abstract: A method and a device for tight interworking processing, and a base station are provided, which relate to the technical field of communications. The method for tight interworking processing, applied to a first base station, includes: transmitting association information between a first cell and a second cell to a second base station; where the first cell is a cell belonging to the first base station, and the second cell is a cell requested by the first base station and belonging to the second base station.
    Type: Application
    Filed: May 8, 2019
    Publication date: July 8, 2021
    Applicant: DATANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD.
    Inventors: Aijuan LIU, Jing LIANG, Dajun ZHANG
  • Patent number: 11057808
    Abstract: The present application discloses a method and a device for managing a Pcell or a PScell, used to resolve the technical issue in the prior art of a lack of effective management in switching of a Pcell or a PScell in CU-DU architecture, and provides a timely and efficient strategy for switching a PScell, so as to improve communication system resource utilization efficiency. The method comprises: a CU determining a Pcell or a PScell of a UE; and the CU transmitting a Pcell/PScell change message to a DU, wherein the Pcell/PScell change message comprises a cell identifier of the cell required to be switched to the Pcell or the PScell, and the CU and the DU jointly serving the UE.
    Type: Grant
    Filed: October 17, 2018
    Date of Patent: July 6, 2021
    Assignee: China Academy of Telecommunications Technology
    Inventor: Dajun Zhang
  • Publication number: 20210144594
    Abstract: Disclosed in the present application are a handover method and apparatus, relating to the field of communications, and being used for reducing the interruption time of data transmission in a distributed unit DU handover process when the central unit control plane/central unit user plane CU-CP/CU-UP in a base station are separated, enhancing the user experience. In the handover method provided in the embodiments of the present application, a notification sent by the CU-CP to the CU-UP not only carries tunnel switching instruction information, but also comprises maintenance instruction information, the maintenance instruction information instructing the CU-UP to continue sending downlink data by means of the original downlink tunnel, such that downlink data can still be received when the user device is not yet connected to a target DU, thereby reducing the interruption time of data transmission during the DU handover process, and enhancing the user experience.
    Type: Application
    Filed: April 24, 2019
    Publication date: May 13, 2021
    Inventors: Aijuan LIU, Ye ZHOU, Dajun ZHANG
  • Publication number: 20210127380
    Abstract: The present disclosure provides a bearer mapping method of wireless backhaul node, a wireless backhaul node and a donor base station, the bearer mapping method includes: sending bearer configuration information to the wireless backhaul node, wherein the bearer configuration information is used to configure one or more of: a first bearer between the wireless backhaul node and the downstream wireless backhaul node or a UE; the bearer mapping relationship of the first bearer; a second bearer between the wireless backhaul node and the upstream wireless backhaul node or the donor base station; the bearer mapping relationship of the second bearer; and the bearer mapping relationship between the first bearer and the second bearer.
    Type: Application
    Filed: April 30, 2019
    Publication date: April 29, 2021
    Applicant: DATANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD.
    Inventors: Jiamin LIU, Ying WANG, Dajun ZHANG
  • Publication number: 20210029624
    Abstract: An access method and a device are provided. The access method is applied to a first wireless backhaul node and includes: determining a previous hop node of the first wireless backhaul node, the previous hop node being a home donor base station of the first wireless backhaul node or being a second wireless backhaul node; and transmitting first information to the home donor base station directly or transmitting the first information to the home donor base station via the second wireless backhaul node.
    Type: Application
    Filed: February 15, 2019
    Publication date: January 28, 2021
    Applicant: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY
    Inventors: Jiamin LIU, Dajun ZHANG, Ying WANG
  • Publication number: 20200359287
    Abstract: The present application discloses a method and a device for managing a Pcell or a PScell, used to resolve the technical issue in the prior art of a lack of effective management in switching of a Pcell or a PScell in CU-DU architecture, and provides a timely and efficient strategy for switching a PScell, so as to improve communication system resource utilization efficiency. The method comprises: a CU determining a Pcell or a PScell of a UE; and the CU transmitting a Pcell/PScell change message to a DU, wherein the Pcell/PScell change message comprises a cell identifier of the cell required to be switched to the Pcell or the PScell, and the CU and the DU jointly serving the UE.
    Type: Application
    Filed: October 17, 2018
    Publication date: November 12, 2020
    Applicant: China Academy of Telecommunications Technology
    Inventor: Dajun Zhang
  • Patent number: 10827403
    Abstract: A data transmission method, a user equipment (UE), a base station and a system are provided. The method includes maintaining transmission of data of a UE by an original base station in a handover process in which the UE hands over from the original base station to a target base station; and transmitting the data to the target base station by the original base station when maintaining the transmission of the data of the UE.
    Type: Grant
    Filed: April 25, 2017
    Date of Patent: November 3, 2020
    Assignee: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY
    Inventor: Dajun Zhang
  • Publication number: 20200323016
    Abstract: A layer 2 processing method, a CU and a DU are provided. The layer 2 processing method includes: sending channel reconstruction indication information to the DU; receiving a response message sent by the DU; generating an RRC reconfiguration message based on the response message; and sending the RRC reconfiguration message to a UE, and performing, by the UE, a corresponding operation.
    Type: Application
    Filed: September 19, 2018
    Publication date: October 8, 2020
    Applicant: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY
    Inventors: Dajun ZHANG, Aijuan LIU, Jiancheng SUN
  • Publication number: 20200162998
    Abstract: Disclosed are a system message notification and sending method and apparatus. The method comprises: a CU determines system message relevant information; and the CU sends the system message relevant information to a DU. The DU receives the system message relevant information sent by the CU; and the DU notifies a terminal of the information. The present application provides an access control and system message processing solution under a CU-DU architecture, and a CU can provide sufficient auxiliary information to a DU, and thus the DU can generate suitable system information according to same. The two coordinate to provide a service to a UE, and the system efficiency is improved and a good user experience is ensured.
    Type: Application
    Filed: April 23, 2018
    Publication date: May 21, 2020
    Inventors: Dajun ZHANG, Aijuan LIU, Ying WANG
  • Publication number: 20200107229
    Abstract: Provided in embodiments of the present disclosure a QoS processing method and a QoS processing device. The QoS processing method includes transmitting, by a target base station, a first message to a source base station. The first message at least comprises first information and second information; the first information is configured for notifying the source base station that the target base station is incapable of meeting a QoS requirement on one or more flows of a UE; and the second information is information of a QoS parameter capable of being accepted by the target base station and recommended with respect to the one or more flows.
    Type: Application
    Filed: February 26, 2018
    Publication date: April 2, 2020
    Applicant: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY
    Inventors: Aijuan LIU, Dajun ZHANG, Fangli XU
  • Patent number: 10609710
    Abstract: A method for transmitting a radio resource control message, a network side central unit, and a network side distributed unit are provided. The method for transmitting a radio resource control (RRC) message includes: mapping the radio resource control (RRC) message into a data stream of a level corresponding to a user plane; and sending effective time and a logical channel identifier of the RRC message and the data stream to a corresponding network side distributed unit (DU) through the user plane or a control plane.
    Type: Grant
    Filed: February 14, 2018
    Date of Patent: March 31, 2020
    Assignee: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY
    Inventors: Aijuan Liu, Dajun Zhang, Fangli Xu
  • Patent number: 10560913
    Abstract: Disclosed are a method, a device, and a system for the acquisition of control node information. In embodiments of the present invention, on the basis of information transmitted by a base station, a relay node acquires control node information on user terminal access attached in the information acquired, thereby allowing a relay node in a system placed after the introducing relay node to be informed of the control node information on user terminal access.
    Type: Grant
    Filed: December 1, 2012
    Date of Patent: February 11, 2020
    Assignee: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY
    Inventors: Beibei Jia, Dajun Zhang, Yi Yang, Wei Bao
  • Publication number: 20200029321
    Abstract: A method for UE capability negotiation, a UE and a base station are provided. The UE reports individual capabilities of the UE for respective radio access networks in multiple systems and a merged capability of the UE for all radio access networks in the multiple systems.
    Type: Application
    Filed: September 28, 2017
    Publication date: January 23, 2020
    Applicant: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY
    Inventors: Dajun ZHANG, Fangli Xu, Chandrika Kumudinie Worrall
  • Publication number: 20190357209
    Abstract: A method for transmitting a radio resource control message, a network side central unit, and a network side distributed unit are provided. The method for transmitting a radio resource control (RRC) message includes: mapping the radio resource control (RRC) message into a data stream of a level corresponding to a user plane; and sending effective time and a logical channel identifier of the RRC message and the data stream to a corresponding network side distributed unit (DU) through the user plane or a control plane.
    Type: Application
    Filed: February 14, 2018
    Publication date: November 21, 2019
    Applicant: China Academy of Telecommunications Technology
    Inventors: Aijuan LIU, Dajun ZHANG, Fangli XU
  • Publication number: 20190357105
    Abstract: A method and apparatus for reducing interruption delay, and a user device. The method is: in response to an anchor point change operation, a source main network entity of a source network side in a mobile communication network initiates an anchor point change request to a target main network entity of a target network side; on the basis of the received anchor point change request, the target main network entity configures and obtains target network side configuration parameters; on the basis of the received target network side configuration parameters, the source main network entity generates a radio resource control message for the target network side; the target main network entity obtains an anchor point reconstruction indication message generated and transmitted by a multi-connection user device on the basis of the radio resource control message, and enters a target network side configuration effective state for target network side reconstruction.
    Type: Application
    Filed: February 5, 2018
    Publication date: November 21, 2019
    Applicant: China Academy of Telecommunications Technology
    Inventors: Dajun ZHANG, Jiamin LIU
  • Publication number: 20190335369
    Abstract: A method for network entity handover, a terminal, and a network entity device are disclosed by the present disclosure. The method includes: receiving a new configuration parameter of a second network entity that is connected to a terminal, the new configuration parameter being transmitted by a first network entity that is connected to the terminal, the new configuration parameter being configured by the second network entity according to indication information of an anchor change operation of changing an anchor from the first network entity to the second network entity, and the indication information being transmitted by the first network entity; and when the new configuration parameter takes effect, not performing reset and/or reestablishment of bottom layer transmission, and transmitting an anchor change confirmation message to the second network entity.
    Type: Application
    Filed: February 12, 2018
    Publication date: October 31, 2019
    Inventors: Dajun ZHANG, Fangli XU
  • Publication number: 20190182883
    Abstract: The present application relates to the technical field of mobile communications, and particularly relates to a cell configuration method and device, used to prevent severe data interruption and ensure normal communication for user equipment. The method comprises: in a scenario of jointly employing an MeNB and an SeNB, a first base station sends SCG configuration information to UE to perform SCG configuration; if the UE Determines that the SCG configuration fails, the UE sends to a network side SCG reconfiguration failure information; and then if an MCG configuration succeeds, then the UE and the network side keep the original SCG configuration information sent at the previous iteration unchanged, else an SCG release is triggered. In this way, when only an SCG configuration fails, the present invention uses original SCG configuration information instead of frequently launching RRC re-establishment, such that severe data interruption is effectively avoided.
    Type: Application
    Filed: July 24, 2017
    Publication date: June 13, 2019
    Applicant: China Academy of Telecommunications Technology
    Inventors: Yuan HE, Dajun ZHANG, Haiyang QUAN