Abstract: Provided are a method and an apparatus for transmitting metadata in a WFD. More particularly, a WFD source transmits, to a WFD sink, a first transmission stream in which an audio stream and a video stream are superimposed and multiplexed. The WFD source receives, from the WFD sink, a first RTSP request message for requesting transmission of metadata for audio data and video data during the transmission of the first transmission stream. The WFD source transmits, to the WFD sink, a first RTSP response message in response to the first RTSP request message during the transmission of the first transmission stream. The WFD source transmits, to the WFD sink, a metadata stream including the metadata and a second transmission stream in which the audio stream and the video stream are superimposed and multiplexed.

Abstract: The present invention may provide a method for a first terminal performing connection capability exchange in a wireless communication system. Here, the method for performing connection capability exchange may comprise the steps of: transmitting, to a second terminal, a P2P probe request frame for a service discovery; receiving, from the second terminal, a P2P probe response frame for the service discovery; performing the establishment of a connection with the second terminal; and forming an ASP session with the second terminal. Here, the P2P probe request frame and the P2P probe response frame comprise connection capability exchange information, and the establishment of a connection may be performed on the basis of the connection capability exchange information.

Abstract: In the present specification, a method may be provided in which a NAN terminal exchanges frames in a wireless communication system. Here, the method in which a NAN terminal exchanges frames may include the steps of: transmitting a first frame, in which a first NAN terminal requests first properties information, to a second NAN terminal, and receiving a second frame for the first properties information from the second NAN terminal. Here, when the first frame is a service discovery frame, the first properties information may be set on the basis of a first field value of the first frame, and when the first frame is a GAS frame, the first properties information may be set as proxy service information.

Abstract: A method and apparatus for outputting a supplementary content from a WFD is disclosed.

Abstract: The present specification may provide a method for forming, by a searcher terminal, an application service platform session with an advertiser terminal in a wireless communication system. The method for forming an application service platform session may comprise the steps of: performing discovery for the advertiser terminal and a first service; and forming an ASP session for the first service by performing connection with the advertiser terminal on the basis of a result of the performed discovery, wherein the discovery and the connection may be performed through at least one of multiple interfaces supported by application service platforms of the searcher terminal and the advertiser terminal when the searcher terminal and the advertiser terminal are first type terminals, and the discovery and the connection may be performed through a Wi-Fi direct interface when one of the searcher terminal and the advertiser terminal is the first type terminal and the other is a second type terminal.

Abstract: The present specification can provide a method by which a NAN proxy client updates a proxy service in a wireless communication system, wherein the method by which a NAN proxy client updates a proxy service.

Abstract: The present specification may provide a method for performing discovery by a seeker terminal in a wireless communication system. In this instance, the method by which a seeker terminal performs discovery may comprise the steps of: transmitting a first frame associated with discovery, by the seeker terminal, to an advertiser terminal; receiving, from the advertiser terminal, a second frame in response to the first frame; and discovering a matching P2P terminal on the basis of the received second frame. The seeker terminal may transmit the first fame by operating in only a search mode, without a listen mode and a scan mode; the advertiser terminal may transmit the second frame by operating in only a listen mode: and the seeker terminal and the advertiser terminal may perform discovery in only a first channel.

Abstract: The present specification relates to a method for performing service discovery by a first terminal in a wireless communication system. Here, the method for performing service discovery by a first terminal may comprise the steps of: performing a service discovery procedure with a second terminal; and establishing a session connection with the second terminal, wherein the service discovery procedure may be performed through an mDNS on the basis of an ASP. In addition, the service discovery procedure may comprise the steps of: exchanging PTR query messages on the basis of the mDNS; and exchanging SRV and TXT query messages on the basis of the mDNS, wherein the TXT record of the SRV and TXT query message may essentially include advertisement ID information for the service.

Abstract: The present invention relates to a method for a NAN proxy client transitioning a state in a wireless communication system. Here, the method for a NAN proxy client transitioning a state may comprise the steps of: the NAN proxy client transitioning, to a NAN proxy server, a request message requesting the escrowing of a proxy service; receiving a response message from the NAN proxy server; performing registration to the NAN proxy server on the basis of the response message; and the state of the NAN proxy client transitioning. Here, if the registration to the NAN proxy server is performed, the state of the NAN proxy client can be transitioned to a first state.

Abstract: A method and an apparatus for switching an input character in a WFD are disclosed.

Abstract: The present invention relates to a method for performing, by a first terminal, service discovery in a wireless communication system. The method for performing service discovery comprises the steps of: transmitting a handover request message to a second terminal by using near field communication (NFC); and receiving a handover selection message from the second terminal by using NFC, wherein the handover selection message may include information on a P2P connection and formation of an ASP session.

Abstract: The present specification relates to a method for a NAN proxy client to perform registration to a NAN proxy server in a wireless communication system. The method for a NAN proxy client to perform registration to a NAN proxy server may comprising: transmitting a subscribe message regarding proxy service search to the NAN proxy server; receiving a publish message from the NAN proxy server; transmitting a proxy registration request message to the NAN proxy server on the basis of proxy service; and receiving a proxy registration response message on the basis of the proxy registration request message.

Abstract: The present specification relates to a method for establishing, by a first device, an ASP session in a wireless communication system. The method for establishing, by a first device, an ASP session comprises the steps in which: the first device establishes, on the basis of a P2P connection method, an ASP session with a second device for a first service which is set to a first network type; the first device and the second device perform a feature capability exchange procedure; and the first device establishes an ASP session for a second service with the second device. Here, the feature capability exchange procedure may be completed when the first device transmits a feature capability request message to the second device on the basis of the established ASP session for the first service and receives a feature capability response message from the second device.

Abstract: The present specification relates to a method for setting an awake period of a discovery window in a wireless communication system. The method may comprise the steps of: setting a data group which comprises one or more master devices; and the master devices, included in the data group, setting an awake period of a discovery window. If the data group is a first data group, the awake period of the discovery window is set as a first period. If the data group is a second data group, the awake period of the discovery window is set as a second period.

Abstract: The present specification relates to a method by which a device supports a service by using an application service platform (ASP) in a wireless communication system, and the service supporting method can comprise the steps of: performing a service discovery for a first service by using the ASP; and performing a service connection on the basis of a result of the service discovery, wherein when the ASP supports a plurality of service discovery interfaces and a plurality of service connection interfaces, the service discovery is performed using at least one of the plurality of service discovery interfaces, and the service connection can be performed using at least one of the plurality of service connection interfaces.

Abstract: The present specification pertains to a method for executing service discovery by means of a first type advertiser device in a wireless communication system, wherein the method may comprise the steps of: receiving a probe request message from a searcher device; determining the type of the searcher device on the basis of the received probe request message; and transmitting a probe response message to the searcher device. Here, the first type advertiser device may execute service discovery with at least one or more of a first type searcher device and a second type searcher device. Here, identification information corresponding to the determined type may be included in the probe response message.

Abstract: The present specification relates to a method for transmitting data by a first neighbor awareness networking (NAN) device in a wireless communication system. The method for transmitting data may comprise the steps of: performing a service discovery for a first service with a second NAN device through a service discovery frame (SDF); and exchanging data for the first service with the second NAN device on the basis of the performed service discovery. Here, when at least one of authentication and association is required in transmitting the data for the first service, attribute information which is required for the data transmission among information on authentication attributes and information on association attributes may be included in the service discovery frame.

Abstract: A method and apparatus for outputting a supplementary content in a WFD is disclosed.

Abstract: A method and apparatus for outputting a supplementary content from a WFD is disclosed.

Abstract: A method for a wireless device including a first module for a local area and a second module for the first module and a remote area according to an exemplary embodiment of this specification may include the steps of transmitting, by a seeker STA having the first module interconnected with the second module, a first version message including first unique information of the seeker STA to an advertiser STA, and receiving a second version message including second unique information from the advertiser STA, storing the first and second unique information as first and second content information, and configuring a service session with the advertiser STA, transmitting the first content information to a wideband server that is associated with the second module, and transmitting a retrieve request message including the second content information for retrieving a remote service for the remote area to the wideband server.