Method of connecting user equipment to IMS network through web browser for web real-time communication service

A method of providing a web real-time communication (WebRTC) service to a user equipment (UE) by a WebRTC web server in a mobile communication system, the method comprising:

• receiving, from the UE, UE-related information to determine an internet protocol multimedia subsystem (IMS) network to which the UE will connect;
• selecting an enhanced proxy-call session control function (eP-CSCF), from first eP-CSCF that is operated in a service provider network corresponding to information on a public land mobile network (PLMN) of a communication network to which the UE is connected, a second eP-CSCF that is closest to the UE, and a third eP-CSCF that is operated in a home PLMN of the UE;
• generating information on the eP-CSCF of the selected based on the UE-related information;
• and
• transmitting, to the UE, information on the IMS network including the information on the eP-CSCF,
• wherein the UE-related information is obtained through a web browser of the UE.

A user equipment (UE) for connecting to an internet protocol multimedia subsystem (IMS) network in a mobile communication system, the UE comprising:

• a transceiver;
• and
• a controller coupled with the transceiver and configured to control to:
• obtain UE-related information to determine an IMS network that the UE will connect to through a web browser of the UE, generate a message for requesting information on the IMS network,
• transmit, to a Web Real-Time Communication (WebRTC) web server, the message for requesting the information on the IMS network to which the UE will connect, and the UE-related information,
• receive, from the WebRTC web server, the information on the IMS network including information on an enhanced proxy-call session control function (eP-CSCF) of the selected based on the UE-related information, and
• connect to the IMS network according to the information on the IMS network,
• wherein the eP-CSCF is selected, by the WebRTC web server, from a first eP-CSCF that is operated in a service provider network corresponding to information on a public land mobile network (PLMN) of a communication network to which the UE is connected, a second eP-CSCF that is closest to the UE, and a third eP-CSCF that is operated in a home PLMN of the UE.

A web real-time communication (WebRTC) web server for providing a WebRTC service to a user equipment (UE) in a mobile communication system, the WebRTC web server comprising:

• a transceiver;
• and
• a controller coupled with the transceiver and configured to control to:
• receive, from the UE, UE-related information to determine an internet protocol multimedia subsystem (IMS) network to which the UE will connect,
• select an enhanced proxy-call session control function (eP-CSCF), from first eP-CSCF that is operated in a service provider network corresponding to information on a public land mobile network (PLMN) of a communication network to which the UE is connected, a second eP-CSCF that is closest to the UE, and a third eP-CSCF that is operated in a home PLMN of the UE,
• generate information on the eP-CSCF of the selected based on the UE-related information, and
• transmit, to the UE, the information on the IMS network including the information on the eP-CSCF,
• wherein the UE-related information is obtained through a web browser of the UE.