Patent ID: 8730884

Claim:
A method for managing resources in a high capacity wireless communication system for communicating with two or more users in a multi-input multi-output (MIMO) scheme when a base station transmits data, the method comprising: transmitting, by the base station, a multi-user MIMO (MU-MIMO) request-to-send (RTS) message to two or more stations in order to transmit data for an MU-MIMO downlink service, and sequentially receiving, by the base station, clear-to-send (CTS) messages from the stations in response to the MU-MIMO RTS message; transmitting, by the base station, a network allocation vector (NAV) protection; and configuring, by the base station, data to be transmitted to the stations into aggregated packets (A-MPDUs), transmitting, by the base station, the A-MPDUs to the stations in the MIMO scheme, and respectively receiving block ACK messages from the stations in response to the A-MPDUs, wherein at least one of responses to the RTS message and the A-MPDUs includes a poll request of the users for an MU-MIMO uplink service.