Abstract: A method performed by a wireless device (510, 800, 1200) for reporting channel state information (CSI) for a downlink channel is disclosed. The method comprises transmitting (601, 705) a CSI report for the downlink channel to a network node (560, 1100), the CSI report comprising: a set of reported coefficients; an indication of how the network node is to interpret the set of reported coefficients; and an indication of a payload size of the set of the reported coefficients.

Abstract: A method, wireless device and network node for performing sounding reference signal (SRS) transmission. According to one aspect a method includes receiving a definition of one or more SRS resource sets to be configured, comprising at least one SRS transmission setting. The method further includes receiving an indication of a selected SRS resource set to use for a SRS transmission, from the one or more configured SRS resource sets and determining a precoding configuration for the SRS transmission based on the selected SRS resource set and the at least one SRS transmission setting. The method also includes transmitting a SRS according to the determined precoding configuration.

Abstract: A wireless device, a network node and methods are disclosed. According to one aspect, a method includes receiving an indication of a maximum power level associated with a spatial-domain basis vector. The method includes determining whether a combination of values of the plurality of amplitude coefficients results in exceeding the maximum power level. The method further includes, responsive to determining that a combination of values of the plurality of amplitude coefficients results in exceeding the maximum power level, not reporting the combination of values in a channel state information, CSI, report.

Abstract: A wireless device (14) is configured for reporting channel state information, CSI, feedback (18) based on a CSI reference signal, CSI-RS, (16) received on a CSI-RS resource (11) of one or more CSI-RS ports. If the wireless device (14) is not configured with a parameter that indicates, for the CSI-RS resource (11), which sets of one or more CSI-RS port indices (17) are associated with which transmission ranks (15), the wireless device (14) is configured to assume, for the CSI-RS resource (11), that certain sets of one or more CSI-RS port indices (17) are associated with certain transmission ranks (15).

Abstract: Apparatus and methods are disclosed for port index signalling. In one embodiment, a method for a network node includes generating at least one port indication in one of a rank nested and a non-rank nested manner; and signalling the at least one port indication in the one of the rank nested and the non-rank nested manner. In another embodiment, a method for a wireless device (WD) includes receiving at least one port indication from a network node, the at least one port index indication being received in one of a rank nested and a non-rank nested manner; and generating channel state information, CSI, feedback based on the at least one port indication.

Abstract: Methods and apparatuses are disclosed for low overhead CSI feedback for multi-trp transmissions. In one embodiment, a method implemented in a wireless device includes receiving a configuration of a channel state information, CSI, report setting for at least K>1 non-zero power channel state information reference signal, NZP CSI-RS, resources for channel measurement and a report quantity configuration, K being an integer; receiving a CSI feedback report request for CSI measurement and feedback based at least in part on the CSI report setting; measuring channels based at least in part on the NZP CSI-RS resources; and sending a channel state information, CSI, feedback report based at least in part on: the channel measurements; and the report quantity configuration; and the CSI feedback report comprising at least one of a first CSI feedback and a second CSI feedback.

Abstract: Methods and apparatuses are disclosed for resource mapping. In one embodiment, a wireless device is provided. The wireless device includes processing circuitry (84) configured to: receive a plurality of physical downlink control channel, PDCCH, transmissions where the plurality of PDCCH transmissions includes a plurality of downlink control information, DCI, messages scheduling a plurality of physical downlink shared channel, PDSCH, transmissions, and at least two of the plurality of PDSCH transmissions one of partially and fully overlap in a time domain; and perform PDSCH resource mapping for decoding the plurality of PDSCH transmissions based at least in part on the plurality of DCI messages.

Abstract: Systems and methods for early Channel State Information (CSI) feedback in New Radio (NR) are provided. In embodiments of the disclosure, CSI reporting is performed during a random access procedure to provide early CSI feedback and enable more efficient data transmission with higher spectral efficiency in earlier communications. In some examples, CSI reporting can be reported on Message 3 of the random access procedure after measuring channel and/or interference on a CSI Reference Signal (RS) (CSI-RS) during the random access procedure. The proposed solution allows early CSI to be triggered when a User Equipment (UE) performs initial access to a serving cell. With the early CSI acquired, the network can perform proper link adaptation including Multiple Input Multiple Output (MIMO) precoding, and ensure efficient data transmission without having to wait until connection setup and configuration of the CSI framework is established.

Abstract: A method is performed by a wireless device for transmitting a Sounding Reference Signal, SRS. The method comprises receiving downlink control information triggering an aperiodic SRS transmission, and identifying a slot indicated by the downlink control information. If the slot indicated by the downlink control information is a downlink slot, the wireless device transmits the SRS in a slot that is not a downlink slot.

Abstract: A method performed by a wireless device (510, 700, 1100) is disclosed. The wireless device obtains (601) a configuration for a sub-band channel quality indicator (CQI) granularity and a sub-band precoding matrix indicator (PMI) granularity for the wireless device. The wireless device determines (602) channel state information (CSI) feedback according to the configured sub-band CQI granularity and the sub-band PMI granularity. The sub-band PMI granularity corresponds to a first sub-band size and the sub-band CQI granularity corresponds to a second sub-band size. The first sub-band size is smaller than the second sub-band size. The wireless device transmits (603), to a network node (560, 1000), the determined CSI feedback.

Abstract: According to some aspects of the techniques disclosed herein, a UE adapted to transmit on different antenna subsets transmits an indication that the UE can transmit a number of distinct RS resources, where each of the RS resources comprises at least one RS port. The UE transmits capability information indicating that the UE is capable of transmitting simultaneously on multiple RS resources and/or receives first and second RS configurations, where the first RS configuration is a first list of SRS resources that at least correspond to RS resource indications used for PUSCH transmission, and the second RS configuration is a second list of RS resources that may be used for SRS transmission. The UE receives an indication of at least one RS resource and transmits a physical channel on antennas of the UE associated with the indicated RS resources.

Abstract: Embodiments include methods, performed by a user equipment (UE), for transmitting or receiving a plurality of physical data channels in a wireless network. Such methods include receiving, from the wireless network, an indication of a Transmission Configuration Indicator (TCI) state that includes one or more source reference signal (RS) pairs. Each source RS pair has a pair of quasi-colocation (QCL) relations with antenna ports, for demodulation reference signals (DM-RS), that are mapped to a plurality of code-division multiplexing (CDM) groups. Such methods include receiving/transmitting the physical data channels based on the QCL relations for the source RS pairs of the indicated TCI state. Each physical data channel corresponds to a CDM group and is received/transmitted in association with the DM-RS having antenna ports mapped to the corresponding CDM group. Other embodiments include complementary methods performed by a wireless network, and UEs and wireless networks configured to perform such methods.

Abstract: A method, wireless device and network node for performing sounding reference signal (SRS) transmission. According to one aspect a method includes receiving a definition of one or more SRS resource sets to be configured, comprising at least one SRS transmission setting. The method further includes receiving an indication of a selected SRS resource set to use for a SRS transmission, from the one or more configured SRS resource sets and determining a precoding configuration for the SRS transmission based on the selected SRS resource set and the at least one SRS transmission setting. The method also includes transmitting a SRS according to the determined precoding configuration.

Abstract: Systems and methods for signaling for Physical Downlink Shared Channel (PDSCH) diversity are provided. In some embodiments, a method performed by a wireless device for receiving a plurality of downlink transmissions includes determining an association between one or more Demodulation Reference Signal (DMRS) ports and one or more associated Redundancy Values (RVs). The method also includes receiving the plurality of downlink transmissions using the association. In some embodiments, this enables a single Downlink Control Information (DCI) to be used to schedule different redundancy versions of the same transport block from the different Transmission/Reception Points (TRPs) which helps improve reliability of decoding a transmission successfully within stringent latency requirements.

Abstract: Embodiments include methods, performed by a user equipment (UE), for communicating via a plurality of nodes in a wireless network. Such methods include receiving a plurality of Transmission Configuration Indicator (TCI) states, and receiving, via a single physical control channel, scheduling information for a plurality of physical data channels carrying a respective plurality of repetitions of a data block. The physical data channels can be respective layers of a PDSCH, or each physical data channel can be a subset of all layers of a PDSCH. Such methods include assigning one or more of the TCI states to the plurality of repetitions, and receiving the plurality of repetitions via the plurality of physical data channels based on the scheduling information and the assigned TCI states. Embodiments also include complementary methods performed by a wireless network, as well as UEs and wireless networks configured to perform such methods.

Abstract: A wireless device, a network node and methods are disclosed. According to one aspect, a method includes receiving an indication of a maximum power level associated with a spatial-domain basis vector. The method includes determining whether a combination of values of the plurality of amplitude coefficients results in exceeding the maximum power level. The method further includes, responsive to determining that a combination of values of the plurality of amplitude coefficients results in exceeding the maximum power level, not reporting the combination of values in a channel state information, CSI, report.

Abstract: A method, network node and wireless device for transmitting and decoding repeated physical downlink control channel (PDCCH) messages are disclosed. According to one embodiment a method implemented in a wireless device (WD) includes receiving multiple transmissions of a PDCCH message, each of the multiple transmissions of the PDDCH message being repeated in a repetition set. The method further includes monitoring the multiple received PDCCH transmissions to obtain scheduling information for a physical uplink shared channel (PUSCH) transmission or a physical downlink shared channel (PDSCH) reception.

Abstract: Devices, systems, and methods described herein may improve aperiodic CSI-RS handling in mixed numerology environments. An exemplary method includes operations of receiving a downlink control information (DCI) message carried by a Physical Downlink Control Channel (PDCCH) on a second carrier, wherein the second carrier uses a second OFDM numerology, obtaining an aperiodic CSI-RS slot offset from the DCI message, determining a reference slot in the first numerology, determining the slot of the aperiodic CSI-RS based on the reference slot and the aperiodic CSI-RS slot offset, and receiving or transmitting the aperiodic CSI-RS in the determined slot.

Abstract: Methods and apparatuses are disclosed for low overhead CSI feedback for multi-trp transmissions. In one embodiment, a method implemented in a wireless device includes receiving a configuration of a channel state information, CSI, report setting for at least K>1 non-zero power channel state information reference signal, NZP CSI-RS, resources for channel measurement and a report quantity configuration, K being an integer; receiving a CSI feedback report request for CSI measurement and feedback based at least in part on the CSI report setting; measuring channels based at least in part on the NZP CSI-RS resources; and sending a channel state information, CSI, feedback report based at least in part on: the channel measurements; and the report quantity configuration; and the CSI feedback report comprising at least one of a first CSI feedback and a second CSI feedback.

Abstract: Systems and methods for signaling for Physical Downlink Shared Channel (PDSCH) diversity are provided. In some embodiments, a method performed by a wireless device for receiving a plurality of downlink transmissions includes determining an association between one or more Demodulation Reference Signal (DMRS) ports and one or more associated Redundancy Values (RVs). The method also includes receiving the plurality of downlink transmissions using the association. In some embodiments, this enables a single Downlink Control Information (DCI) to be used to schedule different redundancy versions of the same transport block from the different Transmission/Reception Points (TRPs) which helps improve reliability of decoding a transmission successfully within stringent latency requirements.