METHOD AND APPARATUS FOR SUPPORTING SINGLE-USER MULTIPLE-INPUT MULTIPLE-OUTPUT (SU-MIMO) AND MULTI-USER MIMO (MU-MIMO)

摘要

SU-MIMO (single-user multiple-input multiple-output) and MU-MIMO (multi-user Method for supporting data communication using MIMO) are described. The base station is given time-frequency resources may be transmitted through the multiple data streams of a single user equipment for the SU-MIMO (UE) or a number of the UE for the MU-MIMO. In an aspect, antenna port specified for the UE is for MU-MIMO may be delivered by reusing one or more pildeul of DCI (downlink control information) format. In another aspect, a hierarchical 2-layer structure may be used to deliver the antenna port specified for the UE for the MU-MIMO. In other companies, UE is SU-MIMO and MU-MIMO transmission mode, in which the support is in motion when the CQI (channel quality indicator) only, or the CQI and PMI (precoding matrix indicator) both report to a higher layer through the configuration can be. In another aspect, UE may report a CQI to be SU-MIMO and MU-MIMO are supported for the UE.