Method and apparatus for controlling traffic offloading in a communication system

A method by a packet data network gateway (PGW) in a mobile communication system, the method comprising:

• receiving, from a terminal, first information and second information, the first information indicating that the terminal has a policy associated with a mobility control for a specific IP flow and the second information indicating whether the policy is received from one of a home public land mobile network (HPLMN), a visited PLMN (VPLMN), or a registered PLMN (RPLMN);
• receiving, from the terminal, a first message to request the mobility control for the specific IP flow;
• and
• transmitting, to the terminal, a second message including third information whether to accept the mobility control for the specific IP flow, the third information being determined based on the first information and the second information,
• wherein the mobility control for the specific IP flow is initiated, by the terminal, in case that the third information indicates to accept the mobility control for the specific IP flow, and
• wherein the mobility control for the specific IP flow is to be initiated, by the PGW, in case that the third information indicates not to accept the mobility control for the specific IP flow.

A terminal of a mobile communication system, the terminal comprising:

• a transceiver;
• and
• a processor coupled with the transceiver and configured to control to:
• transmit first information and second information, the first information indicating that the terminal has a policy associated with a mobility control for a specific IP flow and the second information indicating whether the policy is received from one of a home public land mobile network (HPLMN), a visited PLMN (VPLMN), or a registered PLMN (RPLMN),
• transmit, to a packet data network gateway (PGW), a first message to request the mobility control for the specific IP flow,
• receive, from the PGW, a second message including third information whether to accept the mobility control for the specific IP flow, the third information being determined based on the first information and the second information,
• initiate the mobility control for the specific IP flow in case that the third information indicates to accept the mobility control for the specific IP flow, and
• identify that the mobility control for the specific IP flow is to be initiated by the PGW in case that the third information indicates not to accept the mobility control for the specific IP flow.

A packet data network gateway (PGW) of a mobile communication system, the PGW comprising:

• a transceiver;
• and
• a processor coupled with the transceiver and configured to control to:
• receive, from a terminal, first information and second information, the first information indicating that the terminal has a policy associated with a mobility control for a specific IP flow and the second information indicating whether the policy is received from one of a home public land mobile network (HPLMN), a visited PLMN (VPLMN), or a registered PLMN (RPLMN),
• receive, from terminal, a first message to request the mobility control for the specific IP flow, and
• transmit, to the terminal, a second message including third information whether to accept the mobility control for the specific IP flow, the third information being determined based on the first information and the second information,
• wherein the mobility control for the specific IP flow is initiated, by the terminal, in case that the third information indicates to accept the mobility control for the specific IP flow, and
• wherein the mobility control for the specific IP flow is to be initiated, by the PGW, in case that the third information indicates not to accept the mobility control for the specific IP flow.