METHOD AND APPARATUS FOR PROCESSING ACK SIGNAL IN A WIRELESS LOCAL AREA NETWORK SYSTEM

摘要

An ACK signal processing method that can be used in a wireless LAN system is proposed. Various information that can be used for a downlink MU PPDU for multiple receiving stations may be proposed, and, for example, in order to omit the re-transmission of the related art, information requesting an ACK or Block ACK corresponding to previously transmitted data may be included. If an immediate acknowledgement (ACK) frame fails to be received after the MU-PPDU is transmitted from the AP, a Block ACK may be requested. In this case, while a Block ACK is requested, a radio resource through which a Block ACK is delivered may be allocated.

主权项

1. A signal processing method performed by an access point (AP) of a wireless LAN system supporting multiple resource units (RUs) for a data field, the method comprising:
transmitting a downlink multi user physical layer protocol data unit (MU PPDU) for multiple receiving stations; after the MU-PPDU is transmitted, determining whether or not an immediate acknowledgement (ACK) frame corresponding to the MU PPDU is received by the AP; and in case the immediate ACK frame is not received, transmitting a block ACK request (BAR) requesting an ACK corresponding to the MU PPDU.