Abstract: According to some embodiments, a method implemented by a network node in a communication network comprises: triggering one or more aperiodic channel state information (A-CSI) reports from a user equipment (UE) through downlink control information (DCI); and providing to the UE information about a physical uplink control channel (PUCCH) resource for transmitting the triggered one or more A-CSI reports.

Abstract: Method and apparatus are disclosed herein for providing Downlink Control Information (DCI)-based Transmission Configuration Indicator (TCI) state update with flexible channel selection. In one embodiment, a method performed by a network node of a cellular communication system comprises transmitting, to a User Equipment (UE), a DCI having a DCI format comprising a TCI state update indication, and a TCI state update application indication indicating one or more channels or signals to which the TCI state update is to be applied by the UE. In another embodiment, a method performed by a UE comprises receiving a DCI having a DCI format comprising a TCI state update indication and a TCI state update application indication indicating one or more channels or signals to which the TCI state update is to be applied by the UE, and applying the TCI state update as indicated by the TCI state update application indication.

Abstract: A method by a wireless device includes receiving, from a first network node, assistance information that includes at least one information element that indicates at least one resource type associated with at least one reference signal (RS). The at least one resource type indicates at least one type of RS selected from: Positioning Reference Signal (PRS), Channel State Information-Reference Signal (CSI-RS), and Tracking Reference Signal (TRS).

Abstract: Systems and methods for Channel State Information (CSI) enhancements are provided. In some embodiments, a method performed by a wireless device for reporting channel conditions includes one or more of: receiving a Channel State Information-Interference Measurement (CSI-IM) pattern; and reporting channel conditions based on the CSI-IM pattern. In some embodiments, the CSI-IM pattern spans multiple Orthogonal Frequency-Division Multiplexing (OFDM) symbols on a single subcarrier in a slot. In this way, these CSI-IM patterns might allow better interference measurement by capturing interference in all OFDM symbols in a slot and thus more accurate interference estimation and CSI feedback. The enhanced aperiodic CSI might allow interference variations over time to be measured and reported so that proper margins can be applied by the base station in downlink scheduling to ensure reliable data delivery while maintaining high spectrum efficiency.

Abstract: According to some embodiments, a method implemented by a network node in a communication network for obtaining channel state information (CSI) comprises generating a downlink control information (DCI) to trigger an aperiodic CSI (A-CSI) reporting via a physical uplink control channel (PUCCH) and transmitting the DCI to a terminal device to initiate A-CSI reporting on the PUCCH.

Abstract: Systems and methods for priority handling for Aperiodic-Channel State Information (A-CSI) on Physical Uplink Control Channel (PUCCH) are provided. In some embodiments, a method performed by a wireless device includes: determining a first priority level of a first Uplink Control Information (UCI) (A-CSI on PUCCH triggered by a downlink related DCI); determining a second priority level of a second UCI; and/or performing a priority level handling action based on a comparison of the first priority level and the second priority level. In some embodiments, performing the priority level handling action includes: multiplexing the UCIs and transmitting them together; transmitting the first UCI and the second UCI separately; and dropping one of the UCIs and transmitting the other. In this way, proper priority levels can be determined for A-CSI on PUCCH when it collides with other types of UCI.

Abstract: Methods, base stations and wireless devices for dynamic indication of channel state information (CSI) resources are provided. According to one aspect, a method for a wireless device for determining a channel state information reference symbol, CSI-RS, resource set indicated by a base station is provided. The method includes determining a CSI-RS resource set based on an indication of a CSI report setting. The CSI report setting has a one-to-one correspondence to a CSI-RS resource set.

Abstract: A User Equipment (UE) receives, from a network node, codebook subset restriction (CBSR) signaling comprising a bitmap. The bitmap comprises a plurality of sets and each set comprises a plurality of bits. Each of the bits indicates whether a respective vector in a first set of vectors is restricted. Each set of bits indicates whether a respective vector in a second set of vectors is restricted. The UE restricts precoders selectable from a plurality of codebooks based on either a first vector in the first set of vectors or a second vector in the second set of vectors being indicated as restricted.

Abstract: A method performed by a radio device 6 for Channel State Information (CSI) feedback in a communication system 1 comprising a Radio Access Network (RAN) node 3 comprises receiving, from the RAN node, information about a CSI Reference Signal (RS) resource, a first CSI type and a second CSI type for feedback. The method also comprises receiving, from the RAN node, a CSI feedback request for CSI measurement and feedback of the first CSI type or the second CSI type. The method also comprises measuring CSI of the indicated type based on signals received on the CSI-RS resource. The method also comprises sending, to the RAN node, a CSI report of the requested CSI type. A corresponding method in a RAN node is furthermore presented herein.

Abstract: A method for a UE in a multiple transmission points communication system, mTRP, scheme, is provided. The method includes receiving downlink control information, DCI, indicating at least two transmission points scheme for a scheduled data transmission on physical resource blocks, PRBs. The PRBs includes at least a first subsets of PRBs, associated with a first transmission point, and a second subset of PRBs, associated with a second transmission point. The method further includes determining a first PT-RS frequency density for the first set of PRBs based on the number of PRBs in the first set of PRBs and a second PT-RS frequency density based on the number of PRBs in the second set of PRBs. A UE, methods for a base station and a base station are also provided.

Abstract: A method and system for reporting multi-beam channel state information, CSI, in a wireless device are disclosed. According to one aspect, the method includes providing an indication of a plurality of beam index pairs, (lk, mk), in the UCI in a first transmission, each beam index pair corresponding to a beam k. The method also includes providing an indication of at least one of a beam power, a beam rotation and a channel quality index, CQI, in the UCI in a second transmission. The method also includes transmitting at least one of the indication of beam index pairs, beam power, beam rotation and CQI.

Abstract: System and method for flexible channel state information-reference signal transmission A method by a wireless device is provided for restricting channel state information (CSI) measurement. The method includes receiving, from a network node, information identifying a first subset of channel state information-reference signal (CSI-RS) resources to be used in performing CSI measurements. The first subset of CSI-RS resources are associated with a first portion of a frequency band that is less than all of the frequency band. CSI measurements are performed in the first subset of CSI-RS resources that are associated with the first portion of the frequency band.

Abstract: According to some embodiments, a method for use in a network node of transmitting channel state information reference signals (CSI-RS) comprises transmitting a number M of CSI-RS ports to one or more wireless devices. A fraction of the M ports are transmitted over a first physical resource block (PRB) and a remaining fraction of the M ports are transmitted over a second PRB. Some embodiments further comprise mapping the number M of CSI-RS ports to resource elements of a radio subframe. A fraction of the M ports are mapped to a first PRB of the subframe and a remaining fraction of the M ports are mapped to a second PRB of the subframe.

Abstract: A method, in a radio network node, comprises identifying, among a predetermined codebook of precoding matrix codewords, a subset of precoding matrix codewords that are not to be reported by the wireless device in channel-state-information, CSI, feedback, and transmitting, to the wireless device, a bitmap identifying the subset of precoding matrix codewords that are not to be reported by the wireless device; where each bit in the bitmap corresponds to only one combination of a first dimension index l?1 and a second dimension index l?2 out of the possible combinations of the first dimension index l?1 and the second dimension index l?2, and where the first dimension index l?1 and the second dimension index l?2 identify a two-dimensional beam, the two-dimensional beam being defined by a vector of complex numbers comprised within at least one column of a precoding matrix codeword in the codebook.

Abstract: Methods, wireless devices and network nodes for avoiding collision between a downlink control channel and a aperiodic channel state information reference signal, aperiodic CSI-RS, are provided. According to some aspects, a method is provided that includes receiving an aperiodic channel state information reference signal, aperiodic CSI-RS, based on an assumption that the aperiodic CSI-RS is not present in physical layer resources corresponding to a downlink control channel set.

Abstract: A user equipment, base station and method for transmitting semi-persistent channel state information (SP-CSI) on a physical uplink shared channel (PUSCH) are provided. The user equipment includes processing circuitry configured to receive a control signaling message the control signaling message configuring the user equipment with at least one SP CSI report configuration on the PUSCH, and the message identifying a SP CSI reporting periodicity. The user equipment also receives physical layer control signaling identifying and activating the at least one SP CSI report configuration. Transmitter circuitry is configured to transmit a plurality of SP CSI reports, the reports being transmitted with the periodicity and according to the physical layer control signaling and the control signaling message.

Abstract: Systems and methods of the present disclosure are directed to a method performed by a wireless communication device. The method includes receiving a configuration of a plurality of TCI states via RRC signaling. The method includes receiving a MAC CE that activates a subset of the plurality of TCI states. The method includes receiving a DCI that indicates one or more of the subset of the plurality of TCI states to be used and explicitly or implicitly indicates one or more particular CORESETs for which the one or more of the subset of the plurality of TCI states are to be used. The method includes using one or more spatial QCL downlink reference signals contained in the one or more of the subset of the plurality of TCI states to receive a PDCCH corresponding to the one or more particular CORESETs.

Abstract: A wireless communication device (412) replicates, at a Radio Link Control (RLC) layer of a protocol stack of the wireless communication device (412), an original packet associated to a particular service to provide one or more replicate packets. Each of the one or more replicate packets is a replication of the original packet. For each packet from among a set of packets consisting of the original packet and at least one of the one or more replicate packets, the wireless communication device (412) generates a transport block that comprises the packet and transmits the transport block to one or more base stations or transmission/reception points, TRPs, via a physical layer of the protocol stack of the wireless communication device (412).

Abstract: Systems and methods for configuring positioning measurements and quality/uncertainty measurements are provided. The configuration can include using reference signal configurations and signaling for positioning purposes. An access node transmits reference signal configuration information for positioning to a wireless device. The device performs positioning measurements accordingly and transmits a positioning measurement response including measurement quality information.

Abstract: In one embodiment, a method performed by a wireless communication device comprises receiving a configuration of a first spatial relation or a first Transmission Configuration Indication (TCI) state and a second spatial relation or a second TCI state for an uplink channel and transmitting the uplink channel a number of times in a first set of resources according to the first spatial relation/TCI state and in a second set of resources according to the second spatial relation/TCI state. The method further comprises receiving a Physical Downlink Shared Channel (PDSCH) carrying a Media Access Control (MAC) control element (CE), transmitting a Hybrid Automatic Repeat Request Acknowledgement (HARQ-ACK) associated with the PDSCH in the uplink channel, and applying the MAC CE command according to a timing that is based on a slot or sub-slot over which a last transmission repetition of the uplink channel is transmitted.