公开(公告)号：US20220086942A1

公开(公告)日：2022-03-17

申请号：US17538734

申请日：2021-11-30

Applicant: Huawei Technologies Co., Ltd.

Inventor： Fenqin ZHU ,  Dekui SUN ,  Wenfu WU

IPC: H04W76/19 ,  H04W8/08 ,  H04W36/00 ,  H04W36/08 ,  H04W36/32 ,  H04W36/24

Abstract: A method and an apparatus for initiating user plane path re-establishment and a communications system are disclosed. The method includes: determining, by a session management function entity based on first location information of a terminal device, a session service area to which a current session of the terminal device belongs; and after receiving second location information of the terminal device sent by a mobility management function entity, if determining that the second location information is not within the session service area, instructing the terminal device to initiate a re-establishment procedure for the current session or initiate a handover procedure. Due to introduction of the session service area, when the terminal device moves back and forth at edges of service areas of two adjacent user plane function entities, a ping-pong effect caused by frequent handover between the two user plane function entities is avoided, and user experience is improved.

公开(公告)号：US20200260523A1

公开(公告)日：2020-08-13

申请号：US16861662

申请日：2020-04-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Dekui SUN

IPC: H04W76/40 ,  H04W8/06 ,  H04W8/18

Abstract: Embodiments of the present disclosure provide a session establishment method and system, and a device, to meet a low-latency requirement of group communication. The method includes: obtaining, by a mobility management entity, group identification information of a group to which a terminal belongs; determining, by the mobility management entity based on the group identification information, a session management entity that serves the group to which the terminal belongs; and sending, by the mobility management entity, the group identification information to the session management entity, where the group identification information is used to determine a user plane function entity that serves the group to which the terminal belongs.

公开(公告)号：US20200221540A1

公开(公告)日：2020-07-09

申请号：US16824267

申请日：2020-03-19

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Dekui SUN ,  Shufeng SHI

IPC: H04W80/10 ,  H04W68/00 ,  H04W76/12 ,  H04W48/16 ,  H04W8/08

Abstract: A communication method, an apparatus, and a system in which a first session management function entity based on information of a terminal group determines user plane function entities accessed by terminals in a terminal group, and the first session management function entity determines a target user plane function entity based on the user plane function entities, where the target user plane function entity is used to perform communication between terminals in the terminal group. According to the method, the terminals in the terminal group are redirected to a same user plane function entity, namely, the target user plane function entity, so that communication between the terminals in the terminal group is locally implemented in the target user plane function entity. This shortens a communication path, and reduces a communication latency.

公开(公告)号：US20220346183A1

公开(公告)日：2022-10-27

申请号：US17864460

申请日：2022-07-14

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Dekui SUN

IPC: H04W76/40 ,  H04W8/06 ,  H04W8/18

Abstract: Embodiments of the present disclosure provide a session establishment method and system, and a device, to meet a low-latency requirement of group communication. The method includes: obtaining, by a mobility management entity, group identification information of a group to which a terminal belongs; determining, by the mobility management entity based on the group identification information, a session management entity that serves the group to which the terminal belongs; and sending, by the mobility management entity, the group identification information to the session management entity, where the group identification information is used to determine a user plane function entity that serves the group to which the terminal belongs.

公开(公告)号：US20200351736A1

公开(公告)日：2020-11-05

申请号：US16881446

申请日：2020-05-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Dekui SUN

IPC: H04W36/00 ,  H04W76/30

Abstract: This application provides a server switching method and apparatus, and a communications system. The method includes: receiving, by a terminal, a first notification message, where the first notification message includes an address of a second server; sending, by the terminal, to-be-sent service data to a first server and the second server based on the first notification message; receiving, by the terminal, downlink data from the first server; obtaining, by the terminal, data processing indication information; when obtaining the data processing indication information, sending, by the terminal, the to-be-sent service data to the second server; and receiving, by the terminal, downlink data from the second server. The server switching method and apparatus, and the communications system in the embodiments of this application can implement seamless switching, ensure service continuity, avoid service interruption caused when a terminal switches between servers, and help meet an end-to-end latency requirement.