公开(公告)号：USRE47858E1

公开(公告)日：2020-02-11

申请号：US14584662

申请日：2014-12-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Dongming Zhu ,  Hui Li ,  Jiongjiong Gu ,  Baofeng Zhang ,  Shibi Huang

IPC: H04W72/02 ,  H04W36/00 ,  H04L29/06

Abstract: A method and a system for maintaining session continuity, in which the system includes a Handover Source Function (HOSF), a Handover Destination Function (HODF), a Handover Anchor Function-Control Plane (HOAF-CP) and a Handover Anchor Function-User Plane (HOAF-UP). The method includes a first user establishing a connection through the HOSF with the HOAF-CP and the HOAF-UP which correspond to a second user, so as to establish a session with the second user. The method further includes that, during session handover, the HODF that corresponds to the HOSF establishing another connection with the HOAF-CP and HOAF-UP though which the first user continues the session with the second user, so as to maintain the session continuity. When access address or access technology of the terminal changes, or even the terminal changes during a session, the method and the system can logically replace the connection before the handover with a new connection to ensure the session continuity.

公开(公告)号：US10237726B2

公开(公告)日：2019-03-19

申请号：US14675921

申请日：2015-04-01

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Dongming Zhu ,  Yajuan Wu

IPC: H04W8/24 ,  H04L29/06

Abstract: The present invention discloses a method of implementing UE capability exchange and a method of route control for parallel IMS and CS services in communication system, so as to distinguish among multiple UEs sharing a same IMPU during capability exchange and route control. Said method comprises: each of UEs involved in capability exchange sending its capability information to the opposite party respectively; the opposite party storing these information as well as the correlation between the information and the service ID; The UE including equipment ID of the opposite UE in an initiated service request; service control function entity in the network utilizing the equipment ID to query the established correlation among equipment ID, service ID, and address of the UE, so as to determine the address of the destination UE and route the service request to the destination UE. Said equipment ID identifies effectively a UE in the network.