METHOD AND APPARATUS FOR RANK OVERRIDE

摘要

Methods and apparatuses for use in a MIMO transmission is provided. The method comprises: receiving a rank reported by a user equipment; determining a rank at least partly based on a transmission block size, TBS, index generated from link adaptation decision; and overriding the reported rank with the determined rank. By utilizing downlink link adaption decision, such as TBSidx and rank to quantify PDSCH radio channel quality, improper RI value can be combated, so that transmission of multiple layers only occurs at high SINR region and single layer transmission happens at low SINR region.