Method and system for optimizing ims pdn connection in communication system

Abstract

A method for optimizing an internet protocol (IP) multimedia subsystem (IMS) packet data network (PDN) connection, includes: establishing, by a user equipment (UE), an IMS PDN connection and an internet PDN connection with at least one data network element of a communication network, wherein a primary IP address corresponding to the IMS PDN connection and a secondary IP address corresponding to the internet PDN connection are allocated to the UE by the at least one data network element; sharing, by the UE with an IMS, the secondary IP address over the internet PDN connection, before disconnecting the IMS PDN connection by the communication network; receiving, by the UE from the IMS, a mobile terminated (MT) call notification using the secondary IP address over the internet PDN connection; and based on the received MT call notification, re-establishing, by the UE, the IMS PDN connection.