METHOD FOR TRANSMITTING CONTROL AND TRAINING SYMBOLS IN MULTI-USER WIRELESS COMMUNICATION SYSTEM

The present invention relates to a method for transmitting data in a wireless local area network. The method comprises: generating a physical layer convergence procedure, PLCP, protocol data unit, PPDU, the PPDU sequentially including a common phase to be transmitted in a non-beamforming scheme and a dedicated phase to be transmitted in a beamforming scheme, the common phase including the legacy short training field, STF, the legacy long training field, LTF, the first Very High Throughput, VHT, control field, and the dedicated phase including a second VHT control field, a VHT STF, a VHT LTF and a data field; and transmitting the PPDU to a plurality of receivers. The first VHT control field includes common control information which is common to all of the plurality of receivers. The second VHT control field including specific control information indicating a length of the data field for each of plurality of receivers.