Method and apparatus for setting up an internet protocol address in a wireless communication system

A method of a client device to be allocated an Internet Protocol (IP) address by a Group Owner (GO) device for direct communication between the client device and the GO device, the method comprising:

• transmitting, by the client device, an Association Request message to the GO device;
• receiving an Association Response message from the GO device in response to the Association Request message;
• and
• receiving, by the client device, the IP address of the client device allocated by the GO device, during an authentication process between the client device and the GO device.

A method for allocating an Internet Protocol (IP) address to a client device by a Group Owner (GO) device for direct communication between the client device and the GO device, the method comprising:

• receiving, by the GO device, an Association Request message from the client device;
• transmitting an Association Response message to the client device, in response to the Association Request message;
• and
• transmitting, by the GO device, the IP address of the client device to the client device, during an authentication process between the GO device and the client device.

A device for setting up Internet Protocol (IP) addresses with another device in a wireless communication system, the device comprising:

• a transmitter configured to transmit, to the another device, an IP address pair proposed by the device including a first IP address for the device and a first IP address for the another;
• a receiver configured to receive an IP pair proposed by the another device including a second IP address for the device and a second IP address for the another device;
• and
• a controller configured to determine one of the device and the another device as a Group Owner (GO) device, determine the one of the device and the another device not determined as the GO device as a client device, and determine a set IP address of the device and a set IP address of the another device using the IP address pair proposed by the GO device.

A device to be allocated an Internet Protocol (IP) address by a counterpart device, for direct communication between the device and the counterpart device, the device comprising:

• a controller configured to determine the counterpart device and the device as a Group Owner (GO) device and a client device, respectively;
• a transmitter configured to transmit an IP address allocation request to the GO device through an Association Request message;
• and
• a receiver configured to receive the IP address of the client device allocated by the GO device through an Association Response message, in response to the Association Request message.