Method and device for requesting same partial information for all transmission STAs within transmission MLD and responding thereto in wireless LAN system

A first non-access point (non-AP) station (STA) in a wireless local area network (WLAN) system, the first non-AP STA comprising:

• a memory;
• a transceiver;
• and
• a processor operatively connected to the memory and the transceiver,
• wherein the processor is configured to:
• transmit a Multi-Link (ML) probe request frame to a first AP;
• and
• receive an ML probe response frame from the first AP,
• wherein the first AP operating on a first link and a second AP operating on a second link are affiliated with an AP multi-link device (MLD),
• wherein the first non-AP STA operating on the first link and a second non-AP STA operating on the second link are affiliated with a non-AP MLD,
• wherein the ML probe request frame includes a first frame body and a probe request ML element, and
• wherein the ML probe request frame allows the first non-AP STA to request that the first AP include a same partial profile for all APs affiliated with the AP MLD, based on the first frame body including a first request element and the probe request ML element not including a per-STA profile for the second AP.

A method in a wireless local area network (WLAN) system, the method comprising:

• receiving, by a first access point (AP), a Multi-Link (ML) probe request frame from a first non-AP station (STA);
• and
• transmitting, by the first AP, an ML probe response frame to the first AP,
• wherein the first AP operating on a first link and a second AP operating on a second link are affiliated with an AP multi-link device (MLD),
• wherein the first non-AP STA operating on the first link and a second non-AP STA operating on the second link are affiliated with a non-AP MLD.
• wherein the ML probe request frame includes a first frame body and a probe request ML element, and
• wherein the ML probe request frame allows the first non-AP STA to request that the first AP include a same partial profile for all APs affiliated with the AP MLD, based on the first frame body including a first request element and the probe request ML element not including a per-STA profile for the second AP.