How to repair failed transmission frame in a wireless communication system of multi-user base

摘要

[Problems] multi-user multi-antenna; transmission failure of a frame in a wireless communication system (MU-MIMO Multi-User Multiple Input Multiple Output)-based, sent to a plurality of wireless terminals using the group number, the transmission failure frame To provide a method for repairing. After sending a frame response including a group control information is required for a plurality of wireless terminals, when the response frame is not received correctly from the particular wireless terminal The invention relates to a radio of the plurality to form a group After the time for receiving the response frame from all of the terminal is expired, it sends a request frame to the destination wireless terminal has failed to receive the response frame. In another example, when the response frame is not received correctly from the particular wireless terminal, the invention is up to the wireless terminal in the sequence of the last wireless terminal has failed to receive the response frame by the order of transmission of the response frame I want to send a request frame to the recipient.