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.

Abstract: Systems and methods for trigger conditions for event-driven User Equipment (UE) beam reporting are provided. In some embodiments, a method performed by a UE includes: receiving a configuration of a plurality of Downlink (DL) reference signals which represent a plurality of candidate links; receiving a beam indication where a first DL reference signal is used as the Quasi-Colocation (QCL) source for the demodulation reference signal (DMRS) of the serving link; measuring a quality of the serving link; measuring a quality of the candidate links; if the quality of the serving link is worse than the candidate links: transmitting an event-triggered beam report; and receiving a beam update. This might enable an accurate calculation of the quality of the link serving the UE, and events with that quality as input will be triggered when a better link is found.

Abstract: The present disclosure describes several methods on how to perform an overhead-efficient indication of a phase tracking reference signals (PTRS) to demodulation reference signals (DMRS) mapping for user equipment (UEs) (20, 100) with up to 8 layers, up to 4 PTRS ports, up to 4 simultaneously transmitting UE panels, and up to 4 uplink (UL) codewords, up to 8 layers per UE panel (110), which can reduce the downlink control information (DCI) overhead for UL communication.

Abstract: A method is disclosed for a wireless communication device configured for communication with a wireless communication network and having a plurality of antenna panel entities. The method comprises performing measurements for first and second groups of reference signal resources, wherein each group of reference signal resources is associated with reference signal transmission from a respective radio access node of the wireless communication network, and transmitting first and second measurement reports. Each measurement uses a respective antenna panel entity with a respective spatial filter setting, and the method also comprises indicating, to the wireless communication network, combinations of reference signal resources indicated by the first and second measurement reports that correspond to combinations of antenna panel entities which are configurable for simultaneous transmission from the wireless communication device.

Abstract: There is provided a method performed by a user equipment (UE) configured with a number of transmit antenna ports (NTX). The method comprises: transmitting an indication of a number of transmit antenna port groups to a network node, wherein each transmit port group comprises one or more of the configured transmit antenna ports; and receiving an indication of a configuration for transmitting data to the network node, the configuration based on the number of transmit antenna port groups.

Abstract: A method (700) by a user equipment, UE (112), for transmitting a physical uplink shared channel, PUSCH, transmission, includes receiving (702), from a network node (110), in a Downlink Control Information, DCI, information about two or more Demodulation Reference Signal, DMRS, ports in a Code Division Multiplexing, CDM, group associated to the PUSCH transmission, the two or more DMRS ports are orthogonal at length n, and the two or more DMRS ports are orthogonal over a partial length n? that is less than n. The UE transmits (704), to the network node, the PUSCH transmission with the two or more DMRS ports in the CDM group.

Abstract: A method (700) by a user equipment, UE (112), for receiving a physical downlink shared channel, PDSCH, transmission includes receiving (702), from a network node (110), in a Downlink Control Information, DCI, information about two or more Demodulation Reference Signal, DMRS, ports in a Code Division Multiplexing, CDM, group associated to the PDSCH transmission. The two or more DMRS ports are orthogonal at length n, and the two or more DMRS ports are orthogonal over a partial length n? that is less than n. The UE receives (704), from the network node, the PDSCH transmission with the two or more DMRS ports in the CDM group.

Abstract: There are provided mechanisms for beam selection. A method is performed by a first radio transceiver device. The method comprises obtaining link quality estimates of a radio signal conveyed to the first radio transceiver device from a second radio transceiver device by means of at least a first beam taken from a first beam set and a second beam. The second beam is wider than the first beam. The method comprises selecting which one of the first beam and the second beam to use for continued communications of radio signals with the second radio transceiver device in accordance with a comparison between the link quality estimates of the first beam and compensated link quality estimates of the second beam.

Abstract: A method, system and apparatus are disclosed. According to one or more embodiments, a UE configured to communicate with a first network node and a second network node is provided. The UE is configured to: transmit at least a first uplink reference signal, UL-RS, associated with a first UE antenna port for inter-network node calibration, perform measurements of first and second downlink reference signals, DL-RSs, that are received using the first UE antenna port, determine calibration information based on the measurements of the first and second DL-RSs, and report the calibration information for the inter-network node calibration.

Abstract: A computer-implemented method for enabling compensation of a movement of a first antenna structure having a first antenna mounted thereto, and a node performing such method. The first antenna is configured to communicate with a second antenna over a first wireless communication channel. The method comprises obtaining a difference in propagation delay of a first signal over the first wireless communication channel relative to a first reference delay, and estimating the movement of the first antenna structure based on the estimated difference in propagation delay of the first signal.

Abstract: Embodiments include methods, electronic device, storage medium, and computer program for transmitting Physical Uplink Shared Channel (PUSCH) simultaneously from one or more UE panels. In one embodiment, the method comprises receiving one or more messages to configure a plurality of sounding reference signal (SRS) resource sets; receiving a downlink control information (DCI) message to trigger a PUSCH transmission, where the DCI message includes an SRS resource set indication field to indicate a PUSCH transmission scheme, wherein the PUSCH transmission scheme is selected from a group of PUSCH transmission schemes that includes two or more of a single transmission and reception point (sTRP) transmission, a spatial division multiplexing (SDM) transmission, and a single frequency network (SFN) transmission; and transmitting on a PUSCH using the PUSCH transmission scheme as indicated in the DCI message.

Abstract: There is provided a method performed by a user equipment (UE) in communication with a network node. The method comprises: receiving a sounding reference signal (SRS) configuration, the SRS configuration comprising at least two SRS ports; and sending a power report to the network node, the power report comprising information of a power relation between at least two different SRS ports, wherein the power report is associated with a transmission of the at least two SRS ports.

Abstract: According to some embodiments, a method performed by a wireless device comprising receiving a sounding reference signal (SRS) configuration comprising an indication of a size of a fractional portion of an SRS bandwidth and a location of the fractional portion of the SRS bandwidth to use for sounding and transmitting SRS according to the received SRS configuration.

Abstract: Systems and methods related to signaling of Channel State Information Reference Signal (CSI-RS) configuration for ultra large antenna arrays are disclosed. In one embodiment, a method performed by a User Equipment (UE) comprises receiving, from a network node, a first indication of starting resource elements (REs) for a first subset of code division multiplexing (CDM) groups in a first set of time-frequency resource units and a second indication of starting REs for a second subset of CDM groups in a second set of time-frequency resource units. The method further comprises receiving a first subset of non-zero power (NZP) CSI-RS ports in the first subset of CDM groups, in accordance with the first indication, and receiving a second subset of NZP CSI-RS ports in the second subset of CDM groups, in accordance with the second indication.

Abstract: According to some embodiments, a method performed by a wireless device for transmitting a sounding reference signal (SRS) comprises: receiving a SRS configuration for two or more SRS resource sets; determine a first SRS resource set of the two or more SRS resource sets collides with a second SRS resource set of the two or more SRS resource sets; determining not to transmit SRS using the first SRS resource set; and transmitting SRS using the second SRS resource set.

Abstract: A method, network node and wireless device (WD) for dynamic non-coherent joint transmission channel state information (CSI) indication are disclosed. According to one aspect, a method in a network node includes transmitting a first indication of a set of channel measurement resources (CMRs) for CSI. The CSI includes at least one of: a first CSI for multiple transmission and reception point (multi-TRP) physical downlink shared channel (PDSCH) transmission, and at least one second CSI for PDSCH transmission from one TRP. The method includes transmitting a second indication of a first subset of the set of CMRs to use for determining the first CSI. The method includes configuring the WD to use a second subset of the set of CMRs for determining the at least one second CSI, and receiving a CSI report comprising at least one of the first CSI and the at least one second CSI.

Abstract: According to some embodiments, a method performed by a wireless device comprises receiving a sounding reference signal (SRS) configuration for a SRS resource set. The SRS resource set comprises a plurality of SRS resources. The SRS configuration comprises a first periodicity for a first subset of the plurality of SRS resources and a second periodicity for a second subset of the plurality of SRS resources. The method further comprises transmitting the first subset of SRS resources according to the first periodicity and transmitting the second subset of SRS resources according to the second periodicity.

Abstract: In one embodiment, a method performed by a User Equipment (UE) comprises, for each of one or more Resource Blocks (RBs) allocated for a configured Phase Tracking Reference Signal (PT-RS) port, determining a PT-RS subcarrier offset for the PT-RS port from a table based on a Demodulation Reference Signal (DMRS) port associated to the PT-RS port, a DMRS configuration type, and a resource element offset parameter configured for the UE. The associated DMRS port is one of a plurality of DMRS ports. Each row of the table is associated with one DMRS port and defines different PT-RS subcarrier offsets for a PT-RS port associated to that DMRS port for different resource element offset parameter values for at least one DMRS configuration type. The method further comprises, for each of the allocated RBs, transmitting/receiving a PT-RS on the PT-RS port in the RB in accordance with the determined PT-RS subcarrier offset.

Abstract: A user equipment (120), which has been configured by a network (110) to operate as coordinator UE in a reconfigurable virtual user equipment, RVUE, which further includes at least one non-coordinator UE. The coordinator UE is configured to: indicate to the network a capability of RVUE-coordinated beam management; receive from the network a configuration of a RVUE-coordinated beam management procedure, in which a beam-reporting task is delegated from the non-coordinator UEs to the coordinator UE; and perform measurements and reporting in accordance with the configuration of the RVUE-coordinated beam management procedure. In some embodiments, the coordinator UE is configured to transmit a beam report (310) with a mandatory report part (311) and an optional report part (312), where the mandatory report part indicates a beam preferred by the coordinator UE (e.g., on the basis of its own measurements), and the optional report part indicates a beam preferred by a non-coordinator UE.