Method for transmitting and receiving data unit based on uplink multiple user multiple input multiple output transmission and apparatus for the same

摘要

In an aspect, a method of receiving a data unit, performed by an Access Point (AP), in a Wireless LAN (WLAN) system is provided. The method includes transmitting a signal protection frame, the signal protection frame comprising a group ID field indicating a Multiple Input Multiple Output (MIMO) transmission STA group including a first station (STA) and a second STA; and, a spatial stream field indicating a number of spatial streams allocated to each of member STAs included in the MIMO transmission STA group; receiving a first preamble for a first data unit from the first STA; receiving a second preamble for a second data unit from the second STA; and simultaneously receiving the first data unit from the first STA and the second data unit from the second STA.

主权项

1. A method of receiving a data unit in a Wireless LAN (WLAN) system, comprising:
transmitting, by an Access Point (AP), a signal protection frame, the signal protection frame comprising:
a group ID field indicating a Multiple Input Multiple Output (MIMO) transmission STA group including a first station (STA) and a second STA, anda spatial stream field indicating a number of spatial streams allocated to each of member STAs included in the MIMO transmission STA group; receiving, by the AP, a first preamble for a first data unit from the first STA; receiving, by the AP, a second preamble for a second data unit from the second STA; and receiving, by the AP, the first data unit from the first STA and the second data unit from the second STA on an overlapped time resource, wherein one of the first data unit and the second data unit includes dummy bits.