Signaling for downlink coordinated multipoint in a wireless communication system

摘要

Embodiments herein describe apparatuses, systems, and methods for signaling to support downlink coordinated multipoint (CoMP) communications with a user equipment (UE) in a wireless communication network. In embodiments, the UE may be configured with a plurality of channel state information (CSI) processes (e.g., via radio resource control (RRC) signaling) to use for providing CSI feedback to an evolved Node B (eNB) to support downlink CoMP communications. The UE may be configured with a plurality of sets of CSI processes. The UE may further receive a downlink control information (DCI) message from the eNB that indicates one of the configured sets of CSI processes on which the UE is to provide CSI feedback to the UE. The UE may generate the CSI feedback for the indicated set of CSI processes, and transmit the CSI feedback to the eNB in a CSI report.

主权项

1. One or more non-transitory machine-readable storage media, having instructions stored thereon that, when executed by one or more processors, cause a user equipment (UE) to:
receive physical downlink shared channel (PDSCH) resource element (RE) parameters for a plurality of PDSCH mapping parameter sets, wherein individual PDSCH RE mapping parameter sets of the plurality of PDSCH mapping parameter sets include a number of antenna ports, a cell-specific reference signal (CRS) frequency shift, and a non-zero power channel state information reference signal (CSI-RS) identifier; detect a value in a PDSCH RE mapping field of a downlink control information (DCI) message received from an evolved Node B (eNB), wherein the value is represented in the PDSCH RE mapping field by two bits; identify, based on the value, a PDSCH RE mapping parameter set from the plurality of PDSCH RE mapping parameter sets; and process the PDSCH RE mapping parameter set to receive a PDSCH.