Section: 8.9.1.2.3 Closed-loop spatial multiplexing performance (User-Specific Reference Symbols)
Content: 8.9.1.2.3.1 Single-layer Spatial Multiplexing For single-layer transmission on antenna ports 7 or 8 upon detection of a PDCCH with DCI format 2C, the requirements are specified in Table 8.9.1.2.3.1-2 with the addition of the parameters in Table 8.9.1.2.3.1-1 and the downlink physical channel setup according to Annex C.3.2. The purpose of these tests is to verify rank-1 performance on one of the antenna ports 7 or 8, and to verify rate matching with multiple CSI reference symbol configurations with non-zero and zero transmission power. Table 8.9.1.2.3.1-1: Test Parameters for Testing CDM-multiplexed DM RS (single layer) with multiple CSI-RS configurations Table 8.9.1.2.3.1-2: Minimum performance for CDM-multiplexed DM RS without simultaneous transmission (FRC) with multiple CSI-RS configurations 8.9.1.2.3.2 Single-layer Spatial Multiplexing with CRS assistance information The requirements are specified in Table 8.9.1.2.3.2-2, with the addition of parameters in Table 8.9.1.2.3.2-1. In Table 8.9.1.2.3.2-1, Cell 1 is the serving cell, and Cell 2 and Cell 3 are the aggressor cells. The downlink physical channel setup is according to Annex C.3.2 for each of Cell 1, Cell 2 and Cell 3, respectively. The CRS assistance information [7] is provided to the UE and includes information on Cell 2 and Cell 3. The purpose of the test is to verify the single-layer spatial multiplexing TM9 performance under assumption that UE applies CRS interference mitigation in the scenario with 2 CRS antenna ports in the serving and aggressor cells. Table 8.9.1.2.3.2-1: Test Parameters Table 8.9.1.2.3.2-2: Minimum performance for PDSCH