Abstract: The invention relates to a method performed by a network node, in which the method includes retransmitting data to a user equipment using a New data indicator, NDI, based on monitoring a Physical Uplink Shared Channel, PUSCH. The invention further relates to a method for a user equipment, a network node and a user equipment.

Abstract: Embodiments include methods for a network node to activate semi-persistent sounding reference signal (SP-SRS) resources for transmission by a user equipment (UE). Such methods include sending, to the UE, a control message comprising configuration of a set of SP-SRS resources associated with a particular serving cell of the wireless communication network. Such methods include sending to the UE a further control message for activating the configured set of SP-SRS resources. The further control message includes information identifying an SP-SRS resource of the set of SP-SRS resources to be activated, and an indication of the identified SP-SRS resource's spatial relation with a further resource that is not associated with the particular serving cell. The indication comprising an identity of a further serving cell that is different from the particular serving cell and that is associated with the further resource. Other embodiments include complementary methods for a UE.

Abstract: The invention relates to a wireless communication device configured for use in a wireless communication system, wherein, based on one or more structural properties of a multi-panel antenna array describing how the antenna array is structured into multiple panels, a precoder is selected to be applied for a transmission from the multi-panel antenna array; and wherein an information indicative of the determined precoder is signaled to a transmit radio node; the invention further refers to a transmit radio node configured for transmitting via a multi-panel antenna array in a wireless communication system, wherein signaling indicating one or more structural properties of a multi-panel antenna array describing how the antenna array is structured into multiple panels is transmitted to the wireless communication device.

Abstract: Systems and methods are disclosed herein for mapping Synchronization Signal Blocks (SSBs) to transmit beam directions taking into account remote interference. In this regard, embodiments of a method performed by a base station in a cellular communications network are disclosed. In some embodiments, a method performed by a base station in a cellular communications network comprises determining a beam direction to SSB index mapping, taking into consideration remote interference. The method further comprises using the beam direction to SSB index mapping. Because the SSBs have corresponding Physical Random Access Channel (PRACH) occasions, determining the beam direction to SSB index mapping taking into account remote interference improves PRACH preamble robustness.

Abstract: Systems and methods for Channel State Information (CSI) feedback on small control channels are provided. In some embodiments, a method of operation of a second node connected to a first node in a wireless communication network includes reporting CSI feedback to the first node on a physical channel. In some embodiments, this is accomplished by identifying a subset of codebook entries from an advanced CSI codebook of coefficients; selecting a codebook entry from the subset of codebook entries; and reporting an index of the selected codebook entry from the subset of codebook entries. This may allow robust feedback and allow variably sized cophasing and beam index indicators to be carried on the channel. Also, this may allow periodic feedback of advanced CSI on existing Physical Uplink Control Channel (PUCCH) Format 2.

Abstract: The disclosure includes a host operating in a communication system to provide an over-the-top (OTT) service. The host includes processing circuitry configured to initiate transmission of user data to a network node in a cellular network to a user equipment (UE). The network node is configured to receive a CSI report for a downlink channel from a wireless device and transmit the user data from the host to the UE to provide the OTT service based on the CSI report. The CSI report includes a set of reported coefficients; an indication of how the network node is to interpret the set of reported coefficients, wherein the indication of how the network node is to interpret the set of reported coefficients indicates the set of reported coefficients as a subset of a set of candidate reported coefficients; and an indication of a payload size of the set of the reported coefficients.

Abstract: Systems and methods for Semi-Persistent Sounding Reference Signal (SP SRS) resource activation or deactivation are disclosed. In some embodiments, a method of operation of a wireless device in a cellular communications network comprises receiving, from a network node, a Medium Access Control (MAC) Control Element (CE). The MAC CE comprises an indication of a SP SRS resource set to be activated or deactivated and information that indicates a spatial relation for the SP SRS resource set to be activated or deactivated. In this manner, a MAC CE for SP SRS resource set activation or deactivation is provided in a manner that gives spatial relation information in an efficient and flexible manner.

Abstract: Systems and methods for multi-beam Channel State Information (CSI) reporting are provided. In some embodiments, a method of operation of a second node connected to a first node in a wireless communication network for reporting multi-beam CSI includes reporting a rank indicator and a beam count indicator in a first transmission to the first node. The method also includes reporting a cophasing indicator in a second transmission to the first node. The cophasing indicator identifies a selected entry of a codebook of cophasing coefficients where the number of bits in the cophasing indicator is identified by at least one of the beam count indicator and the rank indicator. In this way, feedback for both a rank indicator and a beam count indicator may be possible which may allow robust feedback and variably sized cophasing and beam index indicators.

Abstract: Systems and methods for triggering CSI reporting on PUCCH are described herein. A network node transmits a downlink-related control message including a Channel State Information (CSI) request field and a Physical Uplink Control Channel (PUCCH) resource indicator. A wireless device receives the control message and determines to trigger a CSI report in accordance with the CSI request field and the PUCCH resource indicator.

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 host configured to operate in a communication system to provide an over-the-top (OTT) service is described. The host initiates transmission of user data to a network node. In order to transmit the user data to a user equipment, the network node receives a channel state information (CSI) report for a downlink channel, the CSI report indicating a plurality of precoder vectors, wherein each of the precoder vectors corresponds to a frequency sub-band of a bandwidth of the downlink channel, each precoder vector being expressed as a linear combination of spatial-domain components and frequency-domain components. The network nodes determines precoding to use for transmitting data to the UE based at least in part on the CSI report. The network nodes transmits the user data from the host to the UE according to the determined precoding to provide the OTT service.

Abstract: A solution presented herein enables a network node (500, 600) to send, and corresponding wireless device (300, 400) to receive, a physical downlink channel on either a first set of resource elements scheduled for that wireless device (300, 400), or on a set of 5 resource elements that includes all of the first set except for a subset that was also scheduled for interference measurement resources. In so doing, the solution presented herein avoids the issues caused by the overlapping signals, and thus improve scheduling flexibility, reduce complexity, and reduce overhead.

Abstract: There is provided mechanisms for transmitting uplink reference signals. A method is performed by a terminal device. The method comprises obtaining, from a network node, a configuration of transmission of the uplink reference signals. The configuration comprises an indication of a first frequency interval in which the uplink reference signals are to be transmitted. The method comprises distributing transmission power available for transmitting the uplink reference signals over the first frequency interval based on channel information for the first frequency interval. The method comprises transmitting the uplink reference signals in accordance with the distributed transmission power.

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 user equipment (UE) determines a receive (RX) spatial filter for receiving both a first measurement resource and a second measurement resource. The RX spatial filter is determined based on a first spatial quasi-co-located (QCL) reference associated with the first measurement resource and a second spatial QCL reference associated with the second, measurement resource. The UE measures the first and second measurement resources with the determined Rx filter configuration.

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: Various embodiments of the present disclosure provide a method for remote interference detection. The method which may be performed by a first network node comprises determining a first subcarrier in a first resource of the first network node to transmit a reference signal for remote interference detection. The first subcarrier may be aligned with a second subcarrier in a second resource of a second network node. In accordance with an exemplary embodiment, the method further comprises transmitting the reference signal on the first subcarrier, according to a first reference signal sequence mapped to the first resource. The first reference signal sequence may be aligned, in an overlapped part of the first resource and the second resource, with a second reference signal sequence mapped to the second resource.

Abstract: A host configured to operate in a communication system to provide an over-the-top (OTT) service is described. The host initiates transmission of user data to a network node. In order to transmit the user data to a user equipment, the network node receives a channel state information (CSI) report for a downlink channel, the CSI report indicating a plurality of precoder vectors, wherein each of the precoder vectors corresponds to a frequency sub-band of a bandwidth of the downlink channel, each precoder vector being expressed as a linear combination of spatial-domain components and frequency-domain components. The network nodes determines precoding to use for transmitting data to the UE based at least in part on the CSI report. The network nodes transmits the user data from the host to the UE according to the determined precoding to provide the OTT service.

Abstract: In certain embodiments, a method performed by a wireless device comprises estimating a channel state of a downlink channel and transmitting a CSI report for the downlink channel based on the channel state. The CSI report indicates a plurality of precoder vectors, each corresponding to a frequency sub-band of the bandwidth of the downlink channel, a precoder vector being expressed as a linear combination of spatial-domain components and frequency-domain component wherein each of the spatial-domain components is associated with a respective set of one or more frequency-domain components.

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.