METHOD AND APPARATUS FOR TRANSCEIVING A DATA FRAME IN A WIRELESS LAN SYSTEM

摘要

A method of transmitting a data frame by a transmitter in a WLAN system is provided. The method includes generating a data block including at least one data units respectively transmitted through at least one or more spatial streams to at least one receiver, transmitting first control information to the at least one receiver, transmitting second control information to each receiver, and transmitting the data block to the at least one receiver. The first control information includes a length indicator for the data block, a MIMO indicator indicating whether the data block is for SU-MIMO or MU-MIMO, and a spatial stream indication field including information about the number of the spatial streams. The second control information includes a FEC coding field indicating an encoding scheme applied to the data unit and an MCS field indicating an MCS applied to the data unit.

主权项

1. A method for transmitting data by a transmitter in a wireless local area network, the method comprising:
determining a type of a physical layer protocol data unit (PPDU) based on a number of receivers to receive the PPDU; if the number of receivers is equal to one, transmitting a single user (SU)-type PPDU to a single receiver; and if the number of receivers is greater than one, transmitting a multi user (MU)-type PPDU to a plurality of receivers, wherein the SU-type PPDU includes a single signal field, a first SU long training field (LTF), a second SU LTF and a SU data portion; and wherein the MU-type PPDU includes two signal fields, a first MU LTF, a second MU LTF and a MU data portion, the two signal fields including a first MU signal field and a second MU signal field.