Apparatus and method for controlling transmission schedule for buffered data in wireless lan, and terminal for receiving buffered data based on transmission schedule in wireless lan

The present invention relates to a technology for controlling a transmission schedule for buffered data, which involves an access point that manages a network acquiring information on the transmission schedule from a terminal in a wireless local area network (WLAN) environment. The apparatus for controlling a transmission schedule for buffered data in a wireless LAN according to one embodiment of the invention groups terminals together on the basis of the service characteristics and/or traffic characteristics of the terminals, allocates group information to the groups such that the groups of terminals can wake up at different times, and transmits group delivery traffic indication map (DTIM) information and/or buffered data based on the allocated group information.