# US 10,873,854 B2 · Method and apparatus for establishing connection of devices > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,873,854 B2 - Document ID: US10873854B2 - Status: Granted - Kind: B2 - Application number: 16/321,368 - Filed: 2017-07-28 - Published: 2019-05-30 - Granted: 2020-12-22 - Earliest claimed: 2016-07-28 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Minsoo Lee; Jingu Choi - Web page: https://patentgrep.com/patent/US10873854B2 ## CPC - H04W 12/55: involving three or more devices, e.g. group pairing - H04W 12/0431: Key distribution or pre-distribution; Key agreement - H04W 52/0206: {in access points, e.g. base stations} - H04W 76/11: Allocation or use of connection identifiers - H04W 76/14: Direct-mode setup - H04W 84/18: Self-organising networks, e.g. ad-hoc networks or sensor networks - H04W 4/80: Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication - H04W 36/035: {in self-organising networks} - H04W 84/12: WLAN [Wireless Local Area Networks] - H04W 88/06: adapted for operation in multiple networks {or having at least two operational modes}, e.g. multi-mode terminals - Y02D 30/70: in wireless communication networks - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE ## Abstract Disclosed is a method and apparatus for establishing a connection of a wireless communication interface between a client and a server using Bluetooth Low Energy (LE). According to the present invention, a client, receives, 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, performs an activation procedure of the main power based on the first state information, transmits, 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; receiving a first write response message in response to the first write request message, receives, from the server, a first indication message including a first result code indicating whether the specific wireless communication interface is activated, and establishes a connection with the specific wireless communication interface, when the specific wireless communication interface is activated. ## Claims ### Claim 1 A method for establishing a connection of wireless interface with a server using Bluetooth Low Energy (LE), the method performed by a client and comprising: receiving, 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; performing an activation procedure of the main power based on the first state information; transmitting, 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; receiving a first write response message in response to the first write request message; receiving, from the server, a first indication message including a first result code indicating whether the specific wireless communication interface is activated; and establishing a connection with the specific wireless communication interface, when the specific wireless communication interface is activated, wherein the step of performing the activation procedure of the main power includes: transmitting, to the server, a second advertising message including a specific code indicating the activation of the main power; receiving, from the server, a third advertising message including third state information indicating a power state of the main power; and establishing the Bluetooth LE connection with the server, and wherein the method further comprises: establishing a bonding with the server; generating a first arbitrary address for identifying the client; and exchanging a second arbitrary address for identifying the first arbitrary address from the server with the server. ### Claim 2 (depends on 1) The method of claim 1, wherein the first advertising message further includes at least one of an identifier indicating the specific wireless communication interface or a service Universal Unique Identifier (UUID) indicating a service available to be provided through the specific wireless communication interface. ### Claim 3 (depends on 1) The method of claim 1, wherein the step of performing the activation procedure includes: establishing the Bluetooth LE connection with the server; transmitting, to the server, a second write request message requesting writing of a second operation code of the control point for activating the main power; receiving, from the server, a second write response message in response to the second write request message; and receiving, from the server, a second indication message including a second result code indicating whether the main power is activated. ### Claim 4 (depends on 1) The method of claim 1, further comprising: generating the specific code; and transmitting, to the server, a message including code information indicating that the generated specific code indicates the activation of the main power. ### Claim 5 (depends on 1) The method of claim 1, wherein the first advertising message further includes list information indicating at least one wireless communication interface except the Bluetooth LE supported by the server and service information indicating a service available to be provided using each of the at least one wireless communication interface. ### Claim 6 A client for establishing a connection of wireless interface with a server using Bluetooth Low Energy (LE), the client comprising: a communication unit configured to communicate with at least one external device 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, wherein the processor transmits, to the server, a second advertising message including a specific code indicating the activation of the main power; receives, from the server, a third advertising message including third state information indicating a power state of the main power; and establishes the Bluetooth LE connection with the server, and wherein the processor establishes a bonding with the server; generates a first arbitrary address for identifying the client; and exchanges a second arbitrary address for identifying the first arbitrary address from the server with the server. ### Claim 7 (depends on 6) The client of claim 6, wherein the processor establishes the Bluetooth LE connection with the server; transmits, to the server, a second write request message requesting writing of a second operation code of the control point for activating the main power; receives, from the server, a second write response message in response to the second write request message; and receives, from the server, a second indication message including a second result code indicating whether the main power is activated. ### Claim 8 (depends on 6) The client of claim 6, wherein the processor generates the specific code; and transmits, to the server, a message including code information indicating that the generated specific code indicates the activation of the main power.