An apparatus for a first node in a wireless communication system, the apparatus comprising: a transceiver; and a controller operatively coupled to the transceiver, wherein the controller is configured to: configure a connection with a second node; receive, from the second node, a request message for capability information of an access point; transmit, to the second node, a first response message comprising the capability information of the AP; receive, from the second node, a message for requesting information associated with a group in which the first node is included, wherein the group is configured by the AP; transmit, to the AP, the message for requesting information associated with the group: receive, from the AP, a second response message comprising the information associated with the group, wherein the information associated with the group includes a group information list updated by the AP, and the updated group information list comprises the second node; and transmit, to the second node, the second response message comprising the information associated with the group. a transceiver; and a controller operatively coupled to the transceiver, wherein the controller is configured to: configure a connection with a second node; receive, from the second node, a request message for capability information of an access point; transmit, to the second node, a first response message comprising the capability information of the AP; receive, from the second node, a message for requesting information associated with a group in which the first node is included, wherein the group is configured by the AP; transmit, to the AP, the message for requesting information associated with the group: receive, from the AP, a second response message comprising the information associated with the group, wherein the information associated with the group includes a group information list updated by the AP, and the updated group information list comprises the second node; and transmit, to the second node, the second response message comprising the information associated with the group. configure a connection with a second node; receive, from the second node, a request message for capability information of an access point; transmit, to the second node, a first response message comprising the capability information of the AP; receive, from the second node, a message for requesting information associated with a group in which the first node is included, wherein the group is configured by the AP; transmit, to the AP, the message for requesting information associated with the group: receive, from the AP, a second response message comprising the information associated with the group, wherein the information associated with the group includes a group information list updated by the AP, and the updated group information list comprises the second node; and transmit, to the second node, the second response message comprising the information associated with the group. receive, from the AP, a second response message comprising the information associated with the group, wherein the information associated with the group includes a group information list updated by the AP, and the updated group information list comprises the second node; and transmit, to the second node, the second response message comprising the information associated with the group.