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: 20230269829
    Abstract: The present application provides a multimedia broadcast multicast service transmission method, including: a core network device determines a target terminal which is interested in a target MBMS; the core network device determines a cell associated with the target terminal; the core network device sends first information to an access network device to which the cell associated with the target terminal belongs, the first information is used to trigger the access network device to confirm whether the target MBMS needs to be received; establishes a broadcast connection with the access network device for the target MBMS, if second information from the access network device or the target terminal is received by the core network device, the second information is used to indicate the access network device needs to receive the target MBMS.
    Type: Application
    Filed: August 6, 2021
    Publication date: August 24, 2023
    Inventor: Dajun Zhang
  • Publication number: 20230152470
    Abstract: The present disclosure provides a capability obtaining method, a capability sending method, a positioning server, and a device. The capability obtaining method is applied to the positioning server and includes: obtaining integrity capability information sent by a first device; wherein the integrity capability information is used for assisting the positioning server in performing a positioning operation, and the first device is a terminal or an access network side node; wherein the integrity capability information is used for indicating at least one of the following: a capability to support an integrity; a capability to support monitoring the integrity of a target object, indicating that the first device is capable of monitoring the integrity of the target object; or a capability to support a first-device-based integrity application of the target object.
    Type: Application
    Filed: March 30, 2021
    Publication date: May 18, 2023
    Applicant: DATANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD.
    Inventors: Jing FU, Jianxiang LI, Haiyang QUAN, Dajun ZHANG
  • Patent number: 11653293
    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: Grant
    Filed: February 15, 2019
    Date of Patent: May 16, 2023
    Assignee: DATANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD.
    Inventors: Jiamin Liu, Dajun Zhang, Ying Wang
  • Publication number: 20230085168
    Abstract: A data flow transmission method, a terminal, and a network-side device are provided. The data flow transmission method includes: mapping QoS flows of an MBS to an MRB and a DRB; transmitting the QoS flows through at least one of the MRB or the DRB.
    Type: Application
    Filed: December 16, 2020
    Publication date: March 16, 2023
    Applicant: DATANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD.
    Inventors: Li CHEN, Dajun ZHANG
  • Publication number: 20230054043
    Abstract: A multimedia broadcast multicast service (MBMS) receiving method and apparatus are provided. The method includes: determining a first MBMS to be initiated; determining, according to a mapping relationship, a state instruction corresponding to the first MBMS, and the state instruction is used for instructing a terminal to receive the first MBMS in an RRC connected state or a non-RRC connected state; if the state instruction is used for instructing the terminal to receive the first MBMS in the RRC connected state, the terminal determining whether the terminal is currently in the non-RRC connected state; and if the terminal is currently in the non-RRC connected state, sending an RRC connection establishment request to a network device, and the RRC connection establishment request includes first instruction information, and the first instruction information is used for indicating that the reason for establishing the present connection is to receive an MBMS.
    Type: Application
    Filed: December 9, 2020
    Publication date: February 23, 2023
    Inventors: Rui ZHOU, Dajun ZHANG, Li CHEN, Erlin ZENG
  • Patent number: 11582622
    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: Grant
    Filed: May 8, 2019
    Date of Patent: February 14, 2023
    Assignee: DATANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD.
    Inventors: Aijuan Liu, Jing Liang, Dajun Zhang
  • Publication number: 20220417887
    Abstract: The present disclosure relates to a method, an apparatus and a device for location service processing, and a medium. The method includes: after receiving a location service request, the location management function sending a QoS index requirement containing integrity to a terminal through a positioning protocol; the terminal performing auxiliary measurement function and integrity auxiliary monitoring according to the index requirement, and returning a measurement value to the location management function; and the location management function performing location estimation and integrity estimation according to the returned measurement value.
    Type: Application
    Filed: January 6, 2021
    Publication date: December 29, 2022
    Applicant: DATANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD.
    Inventors: Jianxiang LI, Haiyang QUAN, Jing FU, Dajun ZHANG
  • Patent number: 11540249
    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: Grant
    Filed: August 30, 2019
    Date of Patent: December 27, 2022
    Assignee: DATANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD.
    Inventors: Dajun Zhang, Haiyang Quan, Ming Ai
  • Patent number: 11480688
    Abstract: The present disclosure provides a satellite differential auxiliary data transmission method, a location method and an apparatus, for ensuring that a better high-precision Beidou satellite location service can be provided on the basis of 5G or other developable technology networks. The satellite differential auxiliary data transmission method includes an LMF acquiring auxiliary information related to a Beidou satellite location system, and calculating auxiliary information for an UE location calculation, the auxiliary information including differential auxiliary data, and sending, via broadcast, to a base station the auxiliary information for the UE location calculation.
    Type: Grant
    Filed: June 21, 2019
    Date of Patent: October 25, 2022
    Assignee: DATANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD.
    Inventors: Dajun Zhang, Haiyang Quan
  • Publication number: 20220191764
    Abstract: Disclosed in the present application are a method for selecting a location management function and a device, which are used to ensure that, in a 5G location network architecture, a UE can quickly redirect to a location management function (LMF) entity after moving so as to meet high-precision and low-latency location requirements of the 5G location network architecture. The method includes: determining to trigger the updating of an LMF entity, and executing a process of selecting a new LMF entity; and executing a process of redirecting to the new LMF entity.
    Type: Application
    Filed: February 3, 2020
    Publication date: June 16, 2022
    Inventors: Chunlin NI, Jing FU, Haiyang QUAN, Dajun ZHANG
  • Publication number: 20220174574
    Abstract: Disclosed in the present application are a method and a device for selecting a local location management function (L-LMF) entity, which are used for ensuring that, under a 5G localization network architecture, UE can use the L-LMF entity of a non-serving RAN node after moving, to satisfy the localization requirements of the 5G localization network architecture for high precision and low time delay. The method includes: upon reception of a localization request message sent by an access and mobility management function (AMF) entity/mobility management entity (MME), starting to execute a process of directing of the UE to the L-LMF entity of a non-serving node; and providing a localization service for the UE by mutually transmitting with the UE a transmission message carrying relevant localization information.
    Type: Application
    Filed: January 21, 2020
    Publication date: June 2, 2022
    Inventors: Chunlin NI, Jing FU, Haiyang QUAN, Dajun ZHANG
  • Publication number: 20220141733
    Abstract: The present disclosure provides a cell handover processing method and device and an apparatus. The method includes: obtaining configuration information of a target handover cell and at least one of the following information: valid time of cell configuration information or a quantity of valid access times; performing cell handover according to the configuration information of the target handover cell within the valid time of cell configuration information and/or the quantity of valid access times.
    Type: Application
    Filed: February 28, 2020
    Publication date: May 5, 2022
    Applicant: DATANG MOBILE COMMUNICATIONS EQUIPMENT CO.,LTD.
    Inventors: Meng XU, Jing LIANG, Dajun ZHANG
  • Patent number: 11277773
    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: Grant
    Filed: April 24, 2019
    Date of Patent: March 15, 2022
    Assignee: DATANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD.
    Inventors: Aijuan Liu, Ye Zhou, Dajun Zhang
  • Publication number: 20220057524
    Abstract: The present invention provides a satellite differential auxiliary data transmission method, a location method and an apparatus, for ensuring that a better high-precision Beidou satellite location service can be provided on the basis of 5G or other developable technology networks. The satellite differential auxiliary data transmission method comprises: an LMF acquiring auxiliary information related to a Beidou satellite location system, and calculating auxiliary information for an UE location calculation, the auxiliary information including differential auxiliary data (S101); and sending, via broadcast, to a base station the auxiliary information for the UE location calculation (S102).
    Type: Application
    Filed: June 21, 2019
    Publication date: February 24, 2022
    Inventors: Dajun ZHANG, Haiyang QUAN
  • Publication number: 20220022114
    Abstract: A data forwarding method and device, a master base station and a slave base station are provided. The data forwarding method includes: after receiving a handover request message sent by a second master base station, if it is determined that a slave base station node is newly added, a service data adaptation protocol (SDAP) layer of a part of flows of a preset protocol data unit (PDU) session is configured at a master base station node, and an SDAP layer of the rest part of flows of the preset PDU is configured at the newly added slave base station node, sending a handover request response message carrying first preset information to a second master base station.
    Type: Application
    Filed: November 1, 2019
    Publication date: January 20, 2022
    Applicant: DATANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD.
    Inventors: Aijuan LIU, Dajun ZHANG, Jiancheng SUN
  • Publication number: 20220014989
    Abstract: A link handover method, a network entity, and a terminal are provided. The method includes: sending a first link handover instruction to a second network entity, and maintaining a first data transmission link with a terminal; receiving a link handover response fed back by the second network entity according to the first link handover instruction; sending a second link handover instruction to the terminal according to the link handover response; wherein the second link handover instruction carries radio resource control (RRC) reconfiguration information for establishing a second data transmission link between the terminal and the second network entity.
    Type: Application
    Filed: September 27, 2019
    Publication date: January 13, 2022
    Applicant: DATANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD.
    Inventor: Dajun ZHANG
  • Publication number: 20220007326
    Abstract: The present disclosure provides a selection method, a selection device, a management function entity, an access network node, a GMLC and a NRF. The selection method of a location management function entity includes: receiving a positioning request message sent by a GMLC; the positioning request message including an identifier of a target UE and a positioning QOS requirement; obtaining information of a wireless access network where the target UE is located; selecting a target LLMF entity according to the information of the wireless access network where the target UE is located, the positioning QOS requirement, and pre-stored related information of the LLMF entity.
    Type: Application
    Filed: August 30, 2019
    Publication date: January 6, 2022
    Applicant: DATANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD.
    Inventors: Dajun ZHANG, Ming AI
  • Publication number: 20210392612
    Abstract: The present disclosure provides a method, a device and a terminal for location message transmission processing. The method for location message transmission processing is applied to an access network equipment and includes: performing LTE Positioning Protocol (LPP) message interaction with a terminal through a local location management function.
    Type: Application
    Filed: September 2, 2019
    Publication date: December 16, 2021
    Applicant: DATANG MOBILE COMMUNICTIONS EQUIPMENT CO., LTD.
    Inventors: Dajun ZHANG, Haiyang QUAN, Ming AI
  • Patent number: 11202333
    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: Grant
    Filed: September 19, 2018
    Date of Patent: December 14, 2021
    Assignee: DATANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD.
    Inventors: Dajun Zhang, Aijuan Liu, Jiancheng Sun
  • Patent number: 11190984
    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: Grant
    Filed: February 26, 2018
    Date of Patent: November 30, 2021
    Assignee: DATANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD.
    Inventors: Aijuan Liu, Dajun Zhang, Fangli Xu