Patent ID: 8891659

Claim:
A wireless apparatus in a wireless local area network, the wireless apparatus comprising: a transceiver configured to receive radio signals based on a multi-user (MU)-multiple input multiple output (MIMO) scheme and a single user (SU)-MIMO scheme; and a processor coupled to the transceiver and configured to: receive a management frame including group information in order to assign or change a position of at least one spatial stream of the wireless apparatus to at least one of a plurality of groups; and receive a data packet including a header that includes a group ID indication field, the group ID indication field indicating one of the plurality of groups and whether the data packet is received based on the SU-MIMO scheme, wherein the group information includes a group indicator and a plurality of spatial stream (SS) indicators; wherein the group indicator indicates whether the wireless apparatus is a member of a corresponding group, and wherein each of the plurality of SS indicators indicates a position of a spatial stream of the corresponding group.