Method and apparatus for establishing connection of devices

A method for establishing a connection of wireless interface using Bluetooth Low Energy (LE), the method performed by a client and a server comprising:

• receiving, by the client, a first advertising message including at least one of first state information indicating a state of main power of the server and second state information indicating a state of a first specific wireless communication interface;
• activating, by the server, the main power based on the first state information;
• transmitting, to the client, a first write request message requesting writing of a first operation code of control point property for activating the first specific wireless communication interface;
• requesting, by a Bluetooth LE module of the server, an activation to a first specific wireless communication interface module;
• receiving, by the client, a first write response message in response to the first write request message from the server;
• informing, by the first specific wireless communication interface module, an activation to the Bluetooth LE module, after the first specific wireless communication interface module is activated;
• receiving, from the server, a first indication message including a first result code indicating whether the first specific wireless communication interface is activated;
• and
• establishing a connection between the first specific wireless communication interface and a second specific wireless communication interface of the client, when the first specific wireless communication interface is activated.

A client for establishing a connection of wireless interface with a server using Bluetooth Low Energy (LE), the client comprising:

• a communication unit for communicating with exterior in wireless or wired manner;
• and
• a processor functionally connected to the communication unit,
• wherein the processor is configured to:
• receive, from the server, a first advertising message including at least one of first state information indicating a state of main power of the server and second state information indicating a state of a specific wireless communication interface;
• perform an activation procedure of the main power based on the first state information;
• transmit, to the server, a first write request message requesting writing of a first operation code of control point property for activating the specific wireless communication interface;
• receive a first write response message in response to the first write request message;
• receive, from the server, a first indication message including a first result code indicating whether the specific wireless communication interface is activated;
• and
• establish a connection with the specific wireless communication interface, when the specific wireless communication interface is activated.