Abstract: Systems and methods for performing channel estimation are provided. In some embodiments, the method includes receiving a combined signal from the two Uplink-Reference Signal (UL-RS) resources at a Transmission and Reception Point (TRP); estimating the channel for the first UL-RS resource at the first TRP from the received combined signal; subtracting the estimated received signal contribution of the first UL-RS resource from the received combined signal from the two UL-RS resources; and estimating the channel for the second UL-RS resource from the received combined signal from the two UL-RS resources subtracted with the estimated received signal contribution of the first UL-RS resource. Some embodiments relate to two UL-RS (e.g., SRS) resources and two TRPs. Some embodiments can be used for more than two SRS resources and/or TRPs. In this way, the quality of reciprocity-based CSI in multi-TRP/D-MIMO deployments for which TRP-specific UL-RS sequences are configured is improved.

Abstract: A method in a User Equipment, UE, comprises receiving from a network node an indication of a preferred preprocessing method. The method further comprises performing measurements on a first set of beams and preprocessing the measurements to derive a second set of beams according to the preferred preprocessing method. The method further comprises transmitting a measurement report to the network node, wherein the measurement report comprises measurements for the second set of beams. A method in a network node, comprises transmitting to a User Equipment, UE, an indication of a preferred preprocessing method. The method further comprises receiving a measurement report from the UE, wherein the measurement report comprises measurements for a subset of beams supported by the UE; wherein the subset of beams is a second set of beams derived by the UE from measurements on a first set of beams according to the preferred preprocessing method.

Abstract: According to some embodiments, a method performed by a wireless device comprises obtaining a sounding reference signal (SRS) resource configuration for 6 or 8 SRS ports and transmitting SRS according to the SRS resource configuration. In particular embodiments, the SRS resource configuration comprises an SRS resource for 6 or 8 SRS ports wherein the SRS resource is divided into at least two subsets, wherein each subset is associated with a different comb offset. In particular embodiments, the SRS resource configuration comprises two SRS resources. Each SRS resource supports up to 4 SRS ports. Transmitting SRS according to the SRS configuration comprises transmitting SRS using an 8 port codebook.

Abstract: A method performed by a user equipment (UE) comprises receiving information that configures the UE with: (a) Non-Zero Power (NZP) Channel State Information Reference Signal (CSI-RS) resources for channel measurement each associated with a different Transmission Configuration Indicator (TCI) state or unified TCI state, (b) a single NZP CSI-RS resource for channel measurement comprising multiple sets of CSI-RS ports each associated with a different TCI state or unified TCI state, or both (a) and (b). The information further configures the UE with a parameter combination indicating at least a number of frequency domain (FD) basis vectors to be selected and reported per layer across the NZP CSI-RS resources or the sets of CSI-RS ports, or for each of the NZP CSI-RS resources or each of the of CSI-RS ports and a number of precoding matrix indicator (PMI) subbands. The method further comprises computing and reporting CSI accordingly.

Abstract: According to some embodiments, a method performed by a wireless device for transmitting on a plurality of antennas comprises signaling, to a network node, a wireless device power transmission capability. The wireless device power transmission capability identifies a power ratio value of a plurality of power ratio values that the wireless device supports for transmission of a physical uplink channel. Each value of the plurality of power ratio values corresponds to a transmission power capability and to a number of antenna ports. A power ratio refers to a ratio relative to a maximum power the wireless device is rated to transmit. The method further comprises transmitting a physical uplink channel using the number of antenna ports with a power scaled at least by the power ratio value.

Abstract: A method (700) implemented in a wireless device (120) for facilitating a determination of at least one receive beam to be used in relation to at least one transmit receive point, TRP (115) or access point, AP, in a wireless network, the method comprising: receiving (714) from the network a downlink reference signal, DL RS, configuration indicating at least two DL RS resources to be received at different panels of the wireless device, each panel representing a group of related antennas; receiving (716) from the network a measurement trigger to perform measurements on one or more of the configured DL RS resources; performing (718) measurements on said DL RS resources using said at least two panels simultaneously; and determining (720) at least one receive beam based on the performed measurements.

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, network node and wireless device (WD) for common spatial filter indications for reference signals in multiple transmission reception point (TRP) systems are disclosed. According to one aspect, a method in a WD includes receiving at least one of an activation command and an indication for a first and second unified transmission configuration indicator (TCI) state of a plurality of unified TCI states, each of the first and second unified TCI states including quasi co-location (QCL) information for at least one of downlink reception and uplink transmission of a plurality of at least one of physical channels and reference signals by the WD. The method also includes receiving an association of each of a plurality of references signals with one of the first and second unified TCI states.

Abstract: A method, system and apparatus are disclosed. A wireless device configured to communicate with a network node is provided. The wireless device is configured to perform a first beam measurement of a serving cell and a second beam measurement associated with an inter-cell mobility candidate cell, determine at least one event criterion is met based on at least one of the first beam measurement and the second beam measurement, and trigger at least one measurement report in a layer lower than a radio resource control, RRC, layer based on the determination.

Abstract: The present disclosure relates to a method for enabling a network node to efficiently control the beam switching of a set of periodic and/or aperiodic signals/channels at an assisting repeater. The method at a repeater node includes receiving one or more periodic beam configurations and receiving one or more dynamic beam indications. The method also includes selecting a periodic beam configuration or a dynamic beam indications to use for a time interval based on a prioritization order, and then applying the periodic beam configuration or dynamic beam indication for a beam of a transmission. The method at a network node includes determining a priority list for a plurality of repeater spatial filters for a repeater node, and the providing the repeater node with one or more periodic beam configurations based on the priority list and one or more dynamic beam indications.

Abstract: Systems and methods of a probing beam procedure are provided. In some embodiments, a method performed by a User Equipment (UE) for evaluating candidate beam pair links includes: indicating support for probing Uplink (UL) Reference Signal (RS) during capability signaling; determining a spatial filter for a UL-RS transmission based on one or more Downlink (DL) Reference Signals (DL-RSs); updating the spatial relation of a UL-RS; and transmitting UL-RS directly without a need of explicit spatial relation update for the UL-RS from a network node. In this way, some embodiments enable the network to evaluate candidate beam pair links based on a UL-RS transmission of a UE, without the need to explicitly indicate spatial filter that the UE shall use for the UL-RS transmission. Some embodiments describe several solutions on how to perform the methods with reduced UL-RS overhead by letting the UE help when to trigger the UL-RS transmission.

Abstract: A method (700) in a wireless device (120) for facilitating a determination of at least one transmit beam to be used in relation to a transmit-receive point (115a) or an access point in a wireless network (110), comprising: receiving (714) an uplink reference signal, UL RS, configuration grouped into a plurality of UL RS resource sets; receiving (716) an activation trigger, which indicates at least one of the configured UL RS resource sets; transmitting (718) on a plurality of UL RS resources in the indicated UL RS resource set(s); evaluating (718.1) a pre-agreed implicit dropping rule, which depends on a characteristic of the wireless device, for the indicated UL RS resource set(s) and deciding to omit transmission on at least one of the UL RS resources therein; and receiving (722) an instruction to use at least one transmit beam, each corresponding to one of the transmitted UL RS resources.

Abstract: There is provided method performed by a user equipment (UE) configured with 8 or more transmit antenna ports (NTX). The method comprises: receiving a precoding indication which indicates a precoder in a subset of precoders, where the subset of precoders corresponds to a plurality of precoders associated with NTX/Ng transmit antenna ports, where Ng is a number of transmit antenna port groups; and transmitting a data transmission using the indicated precoder to a network node. A UE to perform this method is also provided.

Abstract: According to some embodiments, a method performed by a wireless device for indicating an uplink performance metric in a beam sweep report comprises determining a downlink channel quality associated with each beam of a plurality of downlink beams, determining uplink performance metric associated with each beam of the plurality of downlink beams, selecting a subset of the plurality of downlink beams for reporting in abeam sweep report; and transmitting a beam sweep report to a network node based on the selected subset of downlink beams. The beam sweep report includes the uplink performance metric associated with each downlink beam in the subset of downlink beams.

Abstract: There is provided techniques for configuring a network-controlled sensor node for sensing an object. A method is performed by a network node. The method comprises obtaining a report comprises sensing-related information of the network-controlled sensor node. The sensing-related information at least specifies at least one sensing mode supported by the network-controlled sensor node and at least one sensing technique supported by the network-controlled sensor node. The method comprises providing configuration to the network-controlled sensor node for the sensing of the object. The configuration is based on the supported at least one sensing mode and at least one sensing technique.

Abstract: Methods and systems are described for precoding of data channel and sounding of UE panels for UE with a limited number of shared digital ports over multiple UE panels. One embodiment comprises a method performed by a UE for precoding of data channel(s) and sounding of UE panel(s). Steps can include receiving an indication in a downlink control channel that identifies an data channel transmission from one or more SRS resource sets and for which either: all SRS ports in an SRS resource set can be used for sTRP scheme or only a subset of SRS ports in an SRS resource set can be used for STxMP scheme. A further step can include transmitting an UL data channel according to the indication.

Abstract: A UE determines P-MPR for different candidate UE beams. Then, during a P2 beam sweep, instead of the UE generating as wide UE RX beam as possible, the UE consider the determined P-MPR for the candidate UE beams and generates a UE RX beam with as large beamwidth as possible, but with the condition to reduce the antenna gain in directions of the UE beams with large P-MPR.

Abstract: There is provided a method performed by a user equipment (UE) for transmitting and/or receiving data with a network node. The method comprises: receiving a first downlink reference signal (DL-RS) from a first set of DL-RSs and a second DL-RS from a second set of DL-RSs, wherein the first set of DL-RSs are associated with a desired uplink (UL) transmission and the second set of DL-RSs are associated with a non-desired UL transmission; performing measurements on the received first and second DL-RSs; determining uplink precoders based on the measurements; and sending, to a network node, a UL reference signal using the determined precoders.

Abstract: Systems and methods for group-based beam reporting for simultaneous multi-panel transmission and reception are disclosed. In one embodiment, a method performed by a User Equipment (UE) comprises receiving, from a network node, a downlink reference signal configuration that configures a first and a second reference signal resource group, each comprising two or more reference signal resources. The method further comprises performing measurements on reference signals within reference signal resource groups and, based thereon, sending, to the network node, a group-based beam report comprising information for M beam groups.

Abstract: There is provided techniques for uplink communication with a network node. A method is performed by a transceiver device. The method comprises exchanging signaling with the network node to form a RVUE, constituted by a group of transceiver devices. The transceiver device is part of the group of transceiver devices. The signaling at least indicates available number of antenna ports of the RVUE for communication with the network node, and maximally support transmission rank for the RVUE. The method comprises receiving configuration from the network node for uplink transmission from the RVUE to the network node. The configuration at least indicates which transmission rank for the RVUE to use, and a mapping of transmission layers to the antenna ports in the RVUE. The method comprises performing uplink transmission towards the network node in accordance with the received configuration.