Patents by Inventor Changchun Xu
Changchun Xu 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).
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Patent number: 11963242Abstract: This application provides a communication method and apparatus. The method includes: After receiving a first packet from a first device, a first user plane network element determines a user plane LAN identifier corresponding to the first packet, where the user plane LAN identifier is an identifier that is in a user plane and that is of a LAN group to which the terminal belongs, and one user plane LAN identifier corresponds to one LAN group. That is, a function of the user plane LAN identifier is to isolate user plane packets of different LAN groups. Then, the first user plane network element sends the first packet to a second device based on the user plane LAN identifier and a destination address included in the first packet, so that the first packet sent by one terminal in the LAN group is sent to another terminal in the LAN group.Type: GrantFiled: March 12, 2021Date of Patent: April 16, 2024Assignee: Huawei Technologies Co., Ltd.Inventors: Changchun Xu, Zhongping Chen, Yuan Wang, Yan Wang
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Patent number: 11910485Abstract: A mobility management method and apparatus are provided, to flexibly switch a forwarding path, and ensure service continuity in a movement process of a terminal device. The method includes: A control plane network element determines a changed media access control address MAC address of a first terminal device after the first terminal device moves. Then, the control plane network element determines at least one second terminal device that belongs to a same terminal device group as the first terminal device, where the first terminal device is a terminal device whose address changes after the movement, and the at least one second terminal device is a terminal device other than the first terminal device in the terminal device group. Finally, the control plane network element notifies the first terminal device and the at least one second terminal device to update to the changed MAC address of the first terminal device.Type: GrantFiled: July 29, 2021Date of Patent: February 20, 2024Assignee: Huawei Technologies Co., Ltd.Inventors: Changchun Xu, Bo Lin, Yan Wang, Shikun Li
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Patent number: 11743075Abstract: In a communication method, when a terminal device initiates establishment of a session of an Ethernet type, a virtual local area network management function entity in a communications system may determine a virtual local area network identifier of a user group to which the terminal device belongs. In this way, a user plane function entity in the session of the terminal device may allocate a plurality of virtual ports to a virtual local area network whose identifier is the virtual local area network identifier and may broadcast the Ethernet broadcast frame on the plurality of virtual ports.Type: GrantFiled: July 20, 2022Date of Patent: August 29, 2023Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Changchun Xu, Zhongping Chen, Yuan Wang, Yan Wang
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Patent number: 11653180Abstract: A group communications method and system, and a device are provided. The method includes: when a first terminal initiates access to a local area network group, obtaining, by a group management function network element, an identifier of a first user plane network element to be accessed by the first terminal, context information of the local area network group, and a first session port identifier; creating, for the local area network group, a rule group applied to a first session port, and creating or updating, for the local area network group based on the context information, a local area network group forwarding action rule (FAR) applied to the first user plane network element; and sending a first message to a session management network element, for configuring the rule group on the first session port, and configuring the local area network group FAR on the first user plane network element.Type: GrantFiled: May 19, 2021Date of Patent: May 16, 2023Assignee: Huawei Technologies Co., Ltd.Inventors: Changchun Xu, Zhongping Chen, Runze Zhou, Yan Wang
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Patent number: 11540337Abstract: A session handling method and apparatus, where the method includes: initiating, by a terminal, an application (APP); determining a session type of a packet data unit (PDU) session based on the APP; and sending a first message to an access and mobility management function (AMF) entity, where the first message includes the session type, and the first message is used to request to establish the PDU session of the session type. In the method, a network side can establish the PDU session of the corresponding type based on the session type of the PDU session that is sent by the terminal, in order to establish the PDU session of the correct type for the terminal.Type: GrantFiled: February 14, 2020Date of Patent: December 27, 2022Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Yuan Wang, Zhongping Chen, Changchun Xu
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Publication number: 20220360469Abstract: In a communication method, when a terminal device initiates establishment of a session of an Ethernet type, a virtual local area network management function entity in a communications system may determine a virtual local area network identifier of a user group to which the terminal device belongs. In this way, a user plane function entity in the session of the terminal device may allocate a plurality of virtual ports to a virtual local area network whose identifier is the virtual local area network identifier and may broadcast the Ethernet broadcast frame on the plurality of virtual ports.Type: ApplicationFiled: July 20, 2022Publication date: November 10, 2022Inventors: Changchun Xu, Zhongping Chen, Yuan Wang, Yan Wang
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Patent number: 11463280Abstract: A communication method and a device, to implement service isolation of an Ethernet broadcast frame. In this method, when a terminal device initiates establishment of a session of an Ethernet type, a virtual local area network management function entity in a communications system may determine a virtual local area network identifier of a user group to which the terminal device belongs. In this way, a user plane function entity in the session of the terminal device may allocate a plurality of virtual ports to a virtual local area network whose identifier is the virtual local area network identifier, and broadcast the Ethernet broadcast frame on the plurality of virtual ports.Type: GrantFiled: October 27, 2020Date of Patent: October 4, 2022Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Changchun Xu, Zhongping Chen, Yuan Wang, Yan Wang
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Patent number: 11432205Abstract: This application provides a data transmission method, a communications apparatus, and a session management function entity. The method includes obtaining, by a communications apparatus, a correspondence between a quality of service flow identifier of a service flow and an inter-packet time interval of the service flow. The method also includes establishing, by the communications apparatus based on the correspondence, a gate queue used to send a data packet. The method further includes establishing a mapping relationship between the gate queue and the quality of service flow identifier. The method also includes receiving, by the communications apparatus, a data packet from an upper-level sending device of a transmission link. The method further includes if the data packet includes the quality of service flow identifier, periodically scheduling, by the communications apparatus, the data packet based on the gate queue to which the quality of service flow identifier is mapped.Type: GrantFiled: July 31, 2020Date of Patent: August 30, 2022Assignee: Huawei Technologies Co., Ltd.Inventors: Yexing Li, Changchun Xu, Yan Wang
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Publication number: 20210360392Abstract: A mobility management method and apparatus are provided, to flexibly switch a forwarding path, and ensure service continuity in a movement process of a terminal device. The method includes: A control plane network element determines a changed media access control address MAC address of a first terminal device after the first terminal device moves. Then, the control plane network element determines at least one second terminal device that belongs to a same terminal device group as the first terminal device, where the first terminal device is a terminal device whose address changes after the movement, and the at least one second terminal device is a terminal device other than the first terminal device in the terminal device group. Finally, the control plane network element notifies the first terminal device and the at least one second terminal device to update to the changed MAC address of the first terminal device.Type: ApplicationFiled: July 29, 2021Publication date: November 18, 2021Inventors: Changchun XU, Bo LIN, Yan WANG, Shikun LI
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Publication number: 20210274395Abstract: This application provides example data communication methods and apparatuses. One example method includes, after a terminal device is handed over to a first base station and the first base station receives data sent by a switch, generating, by the first base station, second indication information. The second indication information is used to indicate a second base station to stop receiving the data sent by the switch. The first base station can then send the second indication information to the second base station. After receiving a feedback acknowledgment of the second base station for the second indication information, the first base station can then send, to the terminal device, the data sent by the switch.Type: ApplicationFiled: May 18, 2021Publication date: September 2, 2021Inventors: Feng YU, Bo LIN, Changchun XU, Qi SU
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Publication number: 20210274323Abstract: Embodiments of this application provide a group communications method and system, and a device. The method includes: when a first terminal initiates access to a local area network group, obtaining, by a group management function network element, an identifier of a first user plane network element to be accessed by the first terminal, context information of the local area network group, and a first session port identifier; creating, for the local area network group, a rule group applied to a first session port, and creating or updating, for the local area network group based on the context information, a local area network group FAR applied to the first user plane network element; and sending a first message to a session management network element, for configuring the rule group on the first session port, and configuring the local area network group FAR on the first user plane network element.Type: ApplicationFiled: May 19, 2021Publication date: September 2, 2021Inventors: Changchun XU, Zhongping CHEN, Runze ZHOU, Yan WANG
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Patent number: 11064551Abstract: A network management method and a controller are provided. Elastic scaling of an in-network packet data network IN-PDN is implemented when UE is migrated or detached. In addition, service continuity in a local network of the UE can still be ensured when the UE is migrated or detached, and an IN-PDN resource that is no longer used is reclaimed in time, thereby avoiding a waste of the IN-PDN resource.Type: GrantFiled: February 26, 2019Date of Patent: July 13, 2021Assignee: Huawei Technologies Co., Ltd.Inventors: Changchun Xu, Yuanyuan Wang, Jin Zhang, Yan Wang
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Publication number: 20210204336Abstract: This application provides a communication method and apparatus. The method includes: After receiving a first packet from a first device, a first user plane network element determines a user plane LAN identifier corresponding to the first packet, where the user plane LAN identifier is an identifier that is in a user plane and that is of a LAN group to which the terminal belongs, and one user plane LAN identifier corresponds to one LAN group. That is, a function of the user plane LAN identifier is to isolate user plane packets of different LAN groups. Then, the first user plane network element sends the first packet to a second device based on the user plane LAN identifier and a destination address included in the first packet, so that the first packet sent by one terminal in the LAN group is sent to another terminal in the LAN group.Type: ApplicationFiled: March 12, 2021Publication date: July 1, 2021Inventors: Changchun XU, Zhongping CHEN, Yuan WANG, Yan WANG
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Publication number: 20210044454Abstract: A communication method and a device, to implement service isolation of an Ethernet broadcast frame. In this method, when a terminal device initiates establishment of a session of an Ethernet type, a virtual local area network management function entity in a communications system may determine a virtual local area network identifier of a user group to which the terminal device belongs. In this way, a user plane function entity in the session of the terminal device may allocate a plurality of virtual ports to a virtual local area network whose identifier is the virtual local area network identifier, and broadcast the Ethernet broadcast frame on the plurality of virtual ports.Type: ApplicationFiled: October 27, 2020Publication date: February 11, 2021Inventors: Changchun Xu, Zhongping Chen, Yuan Wang, Yan Wang
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Publication number: 20200367114Abstract: This application provides a data transmission method, a communications apparatus, and a session management function entity. The method includes obtaining, by a communications apparatus, a correspondence between a quality of service flow identifier of a service flow and an inter-packet time interval of the service flow. The method also includes establishing, by the communications apparatus based on the correspondence, a gate queue used to send a data packet. The method further includes establishing a mapping relationship between the gate queue and the quality of service flow identifier. The method also includes receiving, by the communications apparatus, a data packet from an upper-level sending device of a transmission link. The method further includes if the data packet includes the quality of service flow identifier, periodically scheduling, by the communications apparatus, the data packet based on the gate queue to which the quality of service flow identifier is mapped.Type: ApplicationFiled: July 31, 2020Publication date: November 19, 2020Inventors: Yexing LI, Changchun XU, Yan WANG
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Publication number: 20200296142Abstract: This application provides a user group establishment method and an apparatus. The method includes: After receiving a first message from a communications device, a user group management function network element generates an identifier of a user group based on the first message, and sends the generated identifier of the user group to a terminal by using a communications network element, so that the user group of the terminal is established in a 3GPP network, and the generated identifier of the user group is sent to the communications device.Type: ApplicationFiled: May 29, 2020Publication date: September 17, 2020Inventors: Yuan Wang, Zhongping Chen, Changchun Xu
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Publication number: 20200259783Abstract: This application provides a method and an apparatus for determining an ethernet MAC address. The method includes: receiving, by a first network device, a first ethernet MAC address from a terminal; and determining, by the first network device, whether the first ethernet MAC address can uniquely identify the terminal or a PDU session of the terminal within a global network range, and sending indication information to the terminal based on a determining result, where the indication information is used to determine a source MAC address of a packet sent by the terminal, and the source MAC address is an ethernet MAC address that can uniquely identify the terminal or the PDU session of the terminal within the global network range.Type: ApplicationFiled: April 29, 2020Publication date: August 13, 2020Inventors: Changchun XU, Zhongping CHEN, Yuan WANG, Yan WANG
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Patent number: 10728829Abstract: Embodiments of the present invention relate to mobile communications technologies, and in particular, to a mobile collaborative communication method and apparatus. In the method, a unified mobility coordinator UMC unit receives application motion event information of an application, where the application is located at a network edge and is used to provide an application service for user equipment UE; the UMC unit receives UE motion event information of the UE; and the UMC unit determines a path between the UE and the application based on the application motion event information and the UE motion event information. Embodiments of the present invention can implement routing configuration between UE and an edge application.Type: GrantFiled: October 2, 2018Date of Patent: July 28, 2020Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Changchun Xu, Yan Wang
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Publication number: 20200187276Abstract: A session handling method and apparatus, where the method includes: initiating, by a terminal, an application (APP); determining a session type of a packet data unit (PDU) session based on the APP; and sending a first message to an access and mobility management function (AMF) entity, where the first message includes the session type, and the first message is used to request to establish the PDU session of the session type. In the method, a network side can establish the PDU session of the corresponding type based on the session type of the PDU session that is sent by the terminal, in order to establish the PDU session of the correct type for the terminal.Type: ApplicationFiled: February 14, 2020Publication date: June 11, 2020Inventors: Yuan Wang, Zhongping Chen, Changchun Xu
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Publication number: 20190208572Abstract: Embodiments of the present application provide a method for dynamically creating a local packet data network, an apparatus, and a system. The method includes: receiving a user plane network element selection request, allocating a first user plane network element to UE based on cell location information, a service type, and an access point name of the UE, and then sending a user plane network element response message that carries an identifier of the first user plane network element to a session management network element, so that the session management network element sends a new session establishment request to the first user plane network element.Type: ApplicationFiled: March 6, 2019Publication date: July 4, 2019Applicant: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Yan WANG, Yexing LI, Changchun XU, Jin ZHANG