Session management method, mobility management functional entity and session management functional entity

A session management method, performed by a session management functional entity, comprising:

• receiving, by the session management functional entity for serving a UE, a management message transmitted from a mobility management functional entity when the UE is incapable of acquiring a network service continuously;
• and
• managing, by the session management functional entity, a session of the UE in accordance with the management message;
• transmitting, by the session management functional entity, management confirmation information to the mobility management functional entity;
• wherein managing the session of the UE in accordance with the management message comprising:
• deleting the entire session of the UE or a user plane of the session according to the management message for deleting the entire session of the UE or the user plane of the session by the session management functional entity.

A mobility management functional entity, comprising a processor, a memory and a transceiver,

• wherein the processor is configured to read and execute a program stored in the memory, so as to implement a session management method, the session management method comprises:
• judging, by the mobility management functional entity, whether a User Equipment (UE) has moved out of an allowed area;
• when the UE has moved out of the allowed area, determining, by the mobility management functional entity, a management message for a session of the UE;
• and
• transmitting, by the mobility management functional entity, the management message to a session management functional entity for serving the UE, wherein the management message is adopted to trigger the session management functional entity to manage the session of the UE;
• wherein the determining, by the mobility management functional entity, the management message for the session of the UE comprises:
• judging, by the mobility management functional entity, the UE is incapable of acquiring a network service continuously;
• and
• determining, by the mobility management functional entity, a management message for deleting the entire session of the UE or a user plane of the session by the session management functional entity;
• wherein the transceiver is configured to receive and transmit data, and the memory is configured to store therein data for the operation of the processor.