Method and apparatus to provide user plane path management information of edge traffic for home-routed user equipment in mobile network system

A method performed by a visited network exposure function (V-NEF) entity in a communication system, the method comprising:

• receiving, from a visited-session management function (V-SMF) entity, a request message to subscribe to a notification of traffic influence from an application function (AF) entity;
• transmitting, to the V-SMF entity, a response message including a correlation identifier (ID) of a subscription to the notification of the traffic influence from the AF entity, the correlation ID being transmitted as a response to the subscription being accepted by the V-NEF;
• receiving, from the AF entity, information on the traffic influence from the AF entity, wherein the traffic influence from the AF entity is for subscribing to a user plane (UP) path change event of a home routed session breakout (HR-SBO);
• identifying that the V-SMF entity is subscribed to the information on the traffic influence from the AF entity;
• generating the notification of the traffic influence from the AF entity;
• and
• transmitting, to the V-SMF entity, the notification of the traffic influence from the AF entity.

A visited session management function (V-SMF) entity in a communication system, the V-SMF entity comprising:

• a transceiver;
• and
• a controller configured to:
• generate a request message to subscribe to a notification of traffic influence from an application function (AF) entity,
• transmit, to a visited-network exposure function (V-NEF) entity, the request message,
• receive, from the V-NEF entity, a response message including a correlation identifier (ID) of a subscription to the notification of the traffic influence from the AF entity, the correlation ID being received as a response to the subscription being accepted,
• receive, from the V-NEF entity, the notification of the traffic influence from the AF entity, wherein the traffic influence from the AF entity is for subscribing to a user plane (UP) path change event of a home routed session breakout (HR-SBO), and
• perform UP path change event monitoring for the HR-SBO.

A visited network exposure function (V-NEF) entity in a communication system, the V-NEF entity comprising:

• a transceiver;
• and
• a controller configured to:
• receive, from a visited-session management function (V-SMF) entity, a request message to subscribe to a notification of traffic influence from an application function (AF) entity,
• transmit, to the V-SMF entity, a response message including a correlation identifier (ID) of a subscription to the notification of the traffic influence from the AF entity, the correlation ID being transmitted as a response to the subscription being accepted by the V-NEF,
• receive, from the AF entity, information on the traffic influence from the AF entity, wherein the traffic influence from the AF entity is for subscribing to a user plane (UP) path change event of a home routed session breakout (HR-SBO),
• identify that the V-SMF entity is subscribed to the information on the traffic influence from the AF entity,
• generate the notification of the traffic influence from the AF entity, and
• transmit, to the V-SMF entity, the notification of the traffic influence from the AF entity.