Computation of channel state feedback in systems using common interference signal interference cancelation

摘要

When enabled with common reference signal interference cancelation, a user equipment (UE) may still compute a channel state feedback value with consideration of any canceled interfering neighboring signals. When the neighboring cells are determined to be transmitting data during the time for which the channel state feedback value is being computed, the UE is able to derive the channel state feedback value considering those canceled interfering signals. The UE determines whether each neighboring cell is transmitting during the designated time either by obtaining signals that indicate the transmission schedule of the neighboring cells or by detecting the transmission schedule, such as based on the power class of the neighboring cells. If the UE determines that the neighboring cells are transmitting data during this time period, the UE will compute the channel state feedback value including consideration of the canceled interfering signals.

主权项

1. A method of wireless communication, comprising:
determining a channel state feedback value; determining that a neighboring cell will transmit data by at least one of:
obtaining semi-static resource partitioning information for the neighboring cell;receiving indication that the neighboring cell is transmitting data from a broadcast signal of the neighboring cell;determining the neighboring cell is transmitting data based on a cell identifier obtained for the neighboring cell; ordetecting transmission characteristics for the neighboring cell; canceling interfering reference signals from the neighboring cell; and generating an adjusted channel state feedback value in response to the determining that the neighbor cell will transmit data, wherein the generating includes adjusting the channel state feedback value based on the interfering reference signals.