Control signaling for uplink multiple input multiple output, channel state information reference signal configuration and sounding reference signal configuration

A System-on-Chip (SoC) to be implemented in a user equipment (UE), the SoC comprising:

• interface circuitry arranged to obtain a radio resource control (RRC) message that includes a non-zero power channel state information reference signal resource set (NZP-CSI-RS-ResourceSet), the NZP-CSI-RS-ResourceSet to indicate one or more non-zero power channel state information reference signal (NZP CSI-RS) resources;
• and
• baseband circuitry coupled with the interface circuitry, the baseband circuitry arranged to:
• assume same antenna ports are to be used for the NZP CSI-RS resources in the NZP-CSI-RS-ResourceSet having a same port index when the NZP-CSI-RS-ResourceSet includes a trs-Info parameter set to ‘on’;
• and
• assume that the NZP CSI-RS resources in the NZP-CSI-RS-ResourceSet are to be transmitted with a same downlink spatial domain transmission filter when the NZP-CSI-RS-ResourceSet includes a repetition parameter set to ‘on’,
• wherein only one of the trs-Info or the repetition can be configured by the NZP-CSI-RS-ResourceSet.

An apparatus to operate as a next generation evolved NodeB (ng-eNB), the apparatus comprising:

• processor circuitry arranged to:
• generate a radio resource control (RRC) message to configure a user equipment (UE) with a sounding reference signal resource set (SRS-ResourceSet),
• generate a first downlink control information (DCI) to indicate an SRS resource (SRS-Resource) in the configured SRS-ResourceSet, the first DCI to trigger the UE to transmit an SRS in the indicated SRS-Resource, and
• generate a second DCI to not indicate an SRS resource in the configured SRS-ResourceSet, the second DCI to trigger the UE to transmit a physical uplink shared channel (PUSCH) scheduled by a DCI in a corresponding physical uplink control channel (PUCCH) resource with a lowest resource identifier (ID) within an active uplink (UL) bandwidth part (BWP);
• and
• communication circuitry communicatively coupled with the processor circuitry, the communication circuitry arranged to transmit the RRC message to the UE, and transmit the first DCI or the second DCI to the UE.