Method and apparatus for transmitting frame in WLAN system

An apparatus configured to operate in a Wireless Local Area Network (WLAN) system, the apparatus comprising:

• a transceiver;
• and
• a processor functionally coupled to the transceiver and
• configured to:
• receive, via the transceiver, information about an association identifier (AID) from an access point, the AID identifying the apparatus in the WLAN system;
• transmit, via the transceiver, a Direct Link Setup (DLS) request frame to a station to request a setup for a direct link with the station, the DLS request frame including the AID of the apparatus;
• receive, via the transceiver, a DLS response frame from the station in response to the DLS request frame, the DLS response frame including an AID of the station;
• generate a Physical Layer Convergence Procedure (PLCP) Protocol Data Unit (PPDU), the PPDU including a Very High Throughput-Signal (VHT-SIG) field and a PLCP Service Data Unit (PSDU);
• and
• transmit, via the transceiver, the PPDU to the station via the direct link,
• wherein the VHT-SIG field includes identity information indicating a partial AID that is formed from the AID of the station and has a length shorter than the length of the AID of the station.

A method of transmitting a frame in a Wireless Local Area Network (WLAN) system, the method comprising:

• receiving, by a second station, information about an association identifier (AID) from an access point, the AID identifying the second station in the WLAN system;
• receiving, by the second station, a Direct Link Setup (DLS) request frame from a first station to request a setup for a direct link with the second station, the DLS request frame including an AID of the first station;
• transmitting, by the second station, a DLS response frame to the first station in response to the DLS request frame, the DLS response frame including the AID of the second station;
• generating, by the second station, a Physical Layer Convergence Procedure (PLCP) Protocol Data Unit (PPDU), the PPDU including a Very High Throughput-Signal (VHT-SIG) field and a PLCP Service Data Unit (PSDU);
• and
• transmitting, by the second station, the PPDU to the first station via the direct link,
• wherein the VHT-SIG field includes identity information indicating a partial AID that is formed from the AID of the first station and has a length shorter than the length of the AID of the first station.

An apparatus operated in a Wireless Local Area Network (WLAN) system, the apparatus comprising:

• a transceiver;
• and
• a processor functionally coupled to the transceiver and configured to:
• receive, via the transceiver, information about an association identifier (AID) from an access point, the AID identifying the apparatus in the WLAN system;
• receive, via the transceiver, a Direct Link Setup (DLS) request frame from a station to request a setup for a direct link with the station, the DLS request frame including an AID of the station;
• transmit, via the transceiver, a DLS response frame to the station in response to the DLS request frame, the DLS response frame including the AID of the apparatus;
• generate a Physical Layer Convergence Procedure (PLCP) Protocol Data Unit (PPDU), the PPDU including a Very High Throughput-Signal (VHT-SIG) field and a PLCP Service Data Unit (PSDU);
• and
• transmit, via the transceiver, the PPDU to the station via the direct link,
• wherein the VHT-SIG field includes identity information indicating a partial AID that is formed from the AID of the station and has a length shorter than the length of the AID of the station.