Patent ID: 8532221
Filing Date: 2013-09-10
Classification: H04L,H04W

Abstract:
1. A method, comprising: identifying devices to receive spatially steered data frames during a transmission opportunity (TXOP), the data frames being included in a multi-user frame; transmitting, during the TXOP, request to send (RTS) information to the identified devices; receiving clear to send (CTS) responses from the identified devices; determining bandwidth configurations for the identified devices based on the CTS responses; selecting a bandwidth configuration for the multi-user frame based on the bandwidth configurations to produce a selected bandwidth configuration that enables the data frames to be spatially steered and transmitted concurrently within the multi-user frame, the selected bandwidth configuration indicating one or more frequency bands that are available during at least a portion of the TXOP; and transmitting, during the TXOP, the multi-user frame to the identified devices in accordance with the selected bandwidth configuration.