Abstract: There is provided a method, in a wireless device, for transmitting a reference signal. The method comprises: receiving a configuration via Radio Resource Control (RRC) from a network node, the configuration comprising a list of slot offset values configured for a Sounding Reference Signal (SRS) resource set; receiving Downlink Control Information (DCI) triggering the SRS resource set, wherein the DCI contains a slot offset bitfield for indicating one of the slot offset values in the list of slot offset values and wherein each entry of the list of slot offset values corresponds to a codepoint of the slot offset bitfield; and transmitting a reference signal using SRS resources configured in the triggered SRS resource set based on the indicated slot offset value.

Abstract: A method, network node and wireless device (WD) for medium access control (MAC) control element (CE) design for multiple power management maximum power reduction (P-MPR) reporting are disclosed. According to one aspect, a method in a network node includes receiving from the WD a power headroom report (PHR) medium access control (MAC) control element (CE) that includes power headroom information for at least one serving cell and for each of the at least one serving cell, information for a plurality of P-MPR, values and candidate beam information associated to at least one of the plurality of P-MPR values. The method also includes determining, for each of the plurality of P-MPR values, a presence of candidate beam information in the MAC CE based at least in part on a bit content in at least one associated field of the MAC CE.

Abstract: Systems and methods are disclosed that relate to configuring Channel State Information Reference Signal (CSI-RS) for Channel State Information (CSI) feedback associated with downlink transmission from multiple Transmission and Reception Points (TRPs). In one embodiment, a method performed by a User Equipment (UE) comprises receiving information that indicates, for one or more CSI-RS ports in one or more CSI-RS resources in a CSI-RS resource set: (a) multiple Transmission Configuration Indicator (TCI) states associated to each of the CSI-RS resource(s), (b) a single TCI state for each of multiple CSI-RS resources in the CSI-RS resource set, wherein the multiple CSI-RS resources are fully overlapping in time and frequency and each of the multiple CSI-RS resources is associated to a different TCI state, or both (a) and (b). The method further comprises performing channel measurement, determining a channel rank, computing a channel quality, and sending feedback comprising the rank and channel quality.

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: An access node (102), which may be limited with respect to its capability of performing downlink wireless transmissions, cooperates with another access node (101) to enable beamformed uplink wireless transmissions from a wireless device (10) to the access node (102) and/or to assist the other access node (101) in performing beamformed downlink wireless transmissions to a UE.

Abstract: There is provided mechanisms for transmission of reference signals. A method is performed by a terminal device. The terminal device comprises at least two physical antenna ports. The method comprises creating a virtual antenna port for, and applied over, at least two of the physical antenna ports. The method comprises transmitting, in the virtual antenna port, as many uplink reference signals as there are physical antenna ports.

Abstract: In a multi-BPL scenario, some form of beam-related indication is desirable to provide assistance to the UE in setting its Rx spatial filtering configuration to receive PDSCH. The assistance to the UE is in the form of a certain indicator indicating a spatial QCL assumption between PDSCH DMRS antenna port(s) and DL RS (e.g., CSI-RS) antenna port(s), such as a preferred CSI-RS resource that was measured and reported previously.

Abstract: A method, system and apparatus for a framework and signaling for non-coherent joint transmission (NCJT) channel state information (CSI) selection are disclosed. According to one aspect, a method in a wireless device (WD) includes performing channel measurements on each of a plurality of channel measurement resources, CMR, associated with each of at least one transmission-and-reception point, TRP. The method also includes transmitting to the network node an indication of at least one of reporting single-TRP channel state information, CSI, and reporting joint-TRP CSI, the CSI reporting being based at least in part on channel measurements on the CMR associated with at least one TRP for which CSI is reported.

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: A network node configured to communicate with a wireless device (WD) is described. An indication indicating to the WD to perform one of a single-TRP operation and a multi-TRP operation for one or more physical channels is determined. The determined indication includes at least one of a first dedicated bit field in a downlink related downlink control information (DCI) scheduling a downlink physical channel; a second dedicated bit field in an uplink related DCI scheduling an uplink physical channel; a first transmission configuration indicator (TCI) bit field in the downlink related DCI, at least one codepoint of the first TCI bit field indicating a single third unified TCI state; a second TCI bit field in the uplink related DCI, at least one other codepoint of the second TCI bit field indicating a single fourth unified TCI state. The determined indication is transmitted to the WD.

Abstract: According to some embodiments, a method performed by a wireless device comprises obtaining an indication that a demodulation reference signal (DMRS) is based on frequency domain coding using a frequency domain orthogonal cover code (FD-OCC) of length greater than two and transmitting or receiving a number of DMRS based on the frequency domain coding.

Abstract: There is presented a wireless device for dual-polarization beamforming. The wireless device comprises an antenna array. The antenna array comprises antenna elements of mutually orthogonal polarizations and a baseband chain. The antenna elements of both polarizations are operatively connected to the baseband chain. There is also presented a method for dual-polarization beamforming as performed by such a wireless device.

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 configured grant for multi-panel Uplink (UL) transmission are provided. In some embodiments, a method performed by a User Equipment (UE) for transmitting PUSCH configured grant to multiple-TRPs includes: receiving a configuration of at least one unified TCI state, indicating mTRP operation; receiving an indication of a configured grant, indicating either mTRP operation using repetition or Simultaneous Transmission Across Multiple Panels (STxMP); and transmitting a PUSCH according to the configuration o. In this way, the unified TCI state framework can be extended to mTRP and multi-panel transmission for configured grant. With the unified TCI state framework, separate spatial relations do not have to be configured for UL transmission. Hence, unified TCI state framework can provide some higher layer overhead savings. By extending unified TCI state framework for mTRP and multi-panel transmission for configured grant, configured grant based PUSCH can also leverage this advantage.

Abstract: There is provided a method, in a wireless device, for transmitting a reference signal. The method comprises: receiving a configuration via Radio Resource Control (RRC) from a network node, the configuration comprising a list of slot offset values configured for a Sounding Reference Signal (SRS) resource set; receiving Downlink Control Information (DCI) triggering the SRS resource set, wherein the DCI contains a slot offset bitfield for indicating one of the slot offset values in the list of slot offset values and wherein each entry of the list of slot offset values corresponds to a codepoint of the slot offset bitfield; and transmitting a reference signal using SRS resources configured in the triggered SRS resource set based on the indicated slot offset value.

Abstract: There is provided mechanisms for performing a beam finding procedure with a serving access network node. A method is performed by a user equipment. The method comprises receiving, as part of performing the beam finding procedure, at least two SSBs. Each of the at least two SSBs comprises a PSS and an SSS. In each of the SSBs, the PSS comprises a PSS sequence and the SSS comprises an SSS sequence. All the SSBs have same PSS sequence but mutually different SSS sequences. The method comprises including the symbol in which the PSS of the SSB was received from the serving access network node in a set of evaluation symbols when received power of at least one of the SSS of the SSB received from the serving access network node and the SSS of any SSB not received from the serving access network node fulfils a power relation criterion.