FIELD: radio engineering, communication.
SUBSTANCE: user′s equipment (UE) may be configured for operation on multiple carriers with different configurations, e.g., FDD and TDD carriers and/or carriers with different uplink-downlink configurations. The multiple carriers may have different subframes for making measurements for CSI and/or different subframes for sending CSI. In response to a CSI request, the UE may determine at least one reference subframe to use for determining CSI for the multiple carriers. The reference subframe may be typical for the plurality of carriers and may, for example, be based the subframe in which the CSI request in sent.
EFFECT: higher communication reliability.
32 cl, 6 tbl, 14 dwg
