| 摘要 |
<p>A base station (BS) for a SDMA-capable cell (C) of a radio communications system (1), adapted for: receiving precoding vector information (PMI) indicating a primary precoding vector (wPMI) in an ordered set of precoding vectors (w), receiving channel quality information (CQI) indicating a channel quality when using the primary precoding vector (wPM?) for scheduling a first user equipment (UE1 ), receiving channel quality degradation information (delta-CQI1 to delta- CQI4) indicating a degradation of a channel quality when scheduling a second user equipment (UE2) on the same time and frequency resources using a secondary precoding vector (wFCI) from a pre-defined ordered set of secondary precoding vectors selected in dependence of the primary precoding vector (wPMI), the base station (BS) being further adapted for: correlating the channel quality degradation information (delta-CQI1 to delta-CQI4) with corresponding secondary precoding vectors (wFCI) of the selected ordered set based on an order of reception of the channel quality degradation information (delta-CQI1 to delta-CQI4). The invention also relates to a user equipment (UE1, UE2), to a cell (C), to a radio communications system (1 ), and to a corresponding method.</p> |
