Method and apparatus for establishing guaranteed bit rate (GBR) quality of service (QoS) flow in session

An apparatus implementing session management for establishing a guaranteed bit rate (GBR) quality of service (QoS) flow in a session, the apparatus comprising:

• a memory configured to store instructions;
• and
• a processor coupled to the memory and configured to execute the instructions to cause the apparatus to:
• receive, from an access and mobility management function entity, first information requesting establishment of the session;
• and
• establish a default GBR QoS flow in the session based on local session policy information of the apparatus;
• or establish the default GBR QoS flow in the session based on session policy information from a policy control function entity or based on session management subscription information from a unified data management module entity.

A system comprising:

• an access and mobility management function entity configured to send first information, wherein the first information requests establishment of a session;
• and
• a session management function entity configured to:
• receive the first information from the access and mobility management function entity;
• and
• establish a default guaranteed bit rate (GBR) quality of service (QoS) flow in the session based on local session policy information of the session management function entity;
• or establish the default GBR QoS flow based on session policy information from a policy control function entity or based on session management subscription information from a unified data management module entity.