CHANNEL STATE INFORMATION FOR REPORTING AN ADVANCED WIRELESS COMMUNICATIONS SYSTEM

摘要

Multi-user channel quality, information (MU-CQI) indicating demodulation interference at the user equipment between co-channel signals within a multi-user, multiple input multiple output (MU-MIMO) transmission is derived utilizing a demodulation interference measurement resource (DM-IMR) and based upon a demodulation reference signal (DMRS). Derivation of signal, interference, and signal-plus-interference parts of the MU-CQI is configurable, as is the MU-CQI reporting, selection of physical resource blocks (PRBs) to be employed, and periods, subframes and/or antenna ports for determining MU-CQI. The interfering transmission may originate from the same transmission point as the desired signal or from a different transmission point.

主权项

1. A user equipment, comprising:
a receiver configured to receive, via a first set of demodulation reference signal (DMRS) antenna ports, a set of physical resource blocks (PRBs) in a single subframe on a physical downlink shared channel (PDSCH) from a transmission point in a wireless communication system, each of the PRBs including a demodulation interference measurement resource (DM-IMR) received via at least one DMRS antenna port other than the first set of DMRS antenna ports; a controller configured to demodulate the PDSCH, to estimate a signal part of channel quality information (CQI) from a PRB in the set of PRBs received via the first set of DMRS ports, and to determine an interference part of the CQI based upon DM-IMRs within PRBs in the set of PRBs received via the at least one other DMRS antenna port; and a transmitter configured to transmit, to the transmission point, an indication of the CQI.