| 摘要 |
The current feedback mechanisms in the 802.11 standard are not appropriate for MU-MIMO, in which many STAs transmit their feedback to an AP, which then proceeds to select the most appropriate STAs for transmission and discards the feedback of the rest of the STAs. This operation leads to large overhead, effectively limiting the effectivity of the MU-MIMO operation. The techniques described in this document allow for a more efficient transmission of feedback related to a MIMO communication.;In this invention a double step feedback method is proposed trough which the STAs first transmit a reduced feedback enabling the AP to perform scheduling, and then the STAs that are chosen for scheduling transmit complementary feedback for the only the streams that are chosen by the scheduling operation. This operation results in a much more efficient feedback transmission. |
