METHOD AND APPARATUS TO START RESTORING THE USER PLAN PATH AND COMMUNICATIONS SYSTEM

摘要

a method and apparatus for initiating user plane path reinstatement and a communications system are revealed, to better serve a session from a terminal device, thereby improving the user experience. the method includes: determining, by a session management role entity based on a terminal device's first location information, a session service area to which a current terminal device session belongs; and after receiving second location information from the terminal device sent by a mobility management function entity, if upon determining that the second location information is not within the session service area, instruct the terminal device to initiate a reset procedure for the current session or initiate a transfer procedure. because of the introduction of the session service area, when the terminal device shifts back and forth on service area edges of two adjacent user plane function entities, a ping pong effect caused by frequent transfer between two entities of user plan function are avoided, and user experience is improved.