Abstract: Embodiments herein relate to a method performed by a user equipment, UE (10), for communicating in a wireless communication network. The UE (10) receives a wake-up signal with a multibit indication from a radio network node (12), wherein the multibit indication comprises a first bit indicating to start or not to start, for a first cell, an on-duration timer at one or more of the next occurrence of an on-duration, and a second bit indicating to apply dormancy or non-dormancy behavior on a second cell at the next occurrence of an on-duration for the second cell. The UE (10) further performs an action related to the wake-up signal taking the received multibit indication into account.

Abstract: Systems and methods for changing Listen Before Talk (LBT) for unlicensed networks are provided. In some embodiments, a method performed by a wireless device includes: receiving signaling from a base station that indicates when the wireless device uses LBT for transmissions; determining, based on the received signaling, whether or not to use LBT for transmissions; and transmitting based on the determination whether or not to use LBT for transmissions. Some embodiments provide a low complexity (in term of signaling overhead and specification impact) approach of adaptively using LBT mechanism by defining two simple modes for LBT operation (LBT and No LBT modes). Some embodiments reduce the probability of simultaneous transmissions that cause collisions, by using LBT mode, in environments and circumstances where network performance suffers from collision and/or interferences.

Abstract: There is disclosed a method of operating a user equipment in a radio access network, the user equipment being configured with a transmission resource pool. The transmission resource pool comprises resources for transmission of response control signaling by the user equipment. The method comprises transmitting response control signaling utilising a resource structure, the resource structure being selected from the transmission resource pool based on a signaling characteristic of characterising signaling, the resource structure further being selected based on selection control information included in a received selection control message. The disclosure also pertains to related devices and methods.

Abstract: Systems and methods relating to accurate Channel State Information (CSI) measurements for a License Assisted Secondary Cell (LA SCell) are disclosed herein. An exemplary user equipment enabled includes a transceiver, at least one processor, and memory containing instructions executable by the at least one processor whereby the user equipment operates to detect whether a downlink control information (DCI) message indicating that a Channel State Information Reference Symbol (CSI-RS) transmission from an LA SCell of the user equipment is present in a subframe. When the user equipment detects that the DCI message indicates that a CSI-RS transmission from the LA SCell is present in the subframe, it processes a CSI-RS measurement. When the user equipment detects that the DCI message does not indicate that a CSI-RS transmission from the LA SCell is present in the subframe, it refrains from processing the CSI-RS measurement.

Abstract: According to some embodiments, a method for use in a user equipment (UE) of transmitting uplink data in unlicensed spectrum comprises receiving, from a network node, an uplink grant comprising an indication of one or more subframes to use for transmitting uplink data. Each subframe comprises a plurality of symbols. The method further comprises obtaining an indication of a listen-before-talk (LBT) type. The LBT type indicates a type of LBT procedure that the UE should perform before transmitting uplink data. The method further comprises determining, using the obtained LBT type, at least one of a starting symbol and a stopping symbol for transmitting uplink data, and transmitting uplink data according to at least one of the determined starting symbol and the determined stopping symbol.

Abstract: A method, wireless device and network node are configured to generate or process a control channel, having two multiplexed sequences based on a base sequence. In some embodiments, a method includes sampling even samples of the base sequence and modulating the sampled even samples to create a first control channel sequence. The method includes performing a second sampling of odd samples of the base sequence to create a second control channel sequence. The method also includes frequency division multiplexing the first and second control channel sequences to produce the control channel.

Abstract: The scheduling flexibility of CSI reference signals enables time and frequency synchronization using multiple non-zero CSI-RSs transmitted in the same subframe, or using CSI-RSs transmitted in the same subframe with other synchronization signals. Also, multiple synchronization signals may be scheduled in the same subframe to enable fine time and frequency synchronization without cell-specific reference signals.

Abstract: An example method is performed by a wireless device in a wireless communication network. The method comprises receiving, from a base station, a control message allocating resources in a bandwidth part for a downlink transmission, the bandwidth part including unlicensed spectrum and being divided into a plurality of bandwidth pieces corresponding to bandwidth units over which listen-before-talk (LBT) is performed. The radio resources used for the downlink transmissions exclude (e.g., by puncturing or rate-matching around) one or more guard bands of a bandwidth piece that is sensed as free for transmission.

Abstract: According to some embodiments, a method for use in a user equipment (UE) of managing a listen-before-talk (LBT) contention window size comprises receiving scheduling for a current burst of contiguous uplink subframes. For each subframe the scheduling comprises an associated hybrid automatic repeat request (HARQ) process identifier and a new data indicator (NDI). The method determines a reference subframe based on a previously-scheduled burst of contiguous uplink subframes. The reference subframe is associated with a reference HARQ process identifier. When the UE determines the HARQ process identifier associated with a subframe of the current scheduled burst of contiguous uplink subframes matches the reference HARQ process identifier and the NDI indicates new data, the method resets the LBT contention window. When the reference HARQ process identifier matches, but the associated NDI indicates a retransmission, or the HARQ process identifier does not match, the method increments the LBT contention window.

Abstract: A method by a wireless device includes receiving, from a network node, configuration information that enables Hybrid Automatic Repeat Request Acknowledgment (HARQ ACK) and/or Negative Acknowledgment (HARQ NACK) feedback for a first set of HARQ processes and disables HARQ ACK and/or HARQ NACK for a second set of HARQ processes. The wireless device constructs a first HARQ codebook of a first type based on the first set of HARQ process numbers for first set of HARQ processes for which HARQ ACK and/or HARQ NACK feedback is enabled and sends, to the network node, the HARQ ACK and/or HARQ NACK feedback based on the first HARQ codebook.

Abstract: A method of operating a signaling radio node in a radio access network is provided. The method includes transmitting control signaling to a feedback radio node. The control signaling includes control information having a bit pattern. The bit pattern has a subpattern with M bits in which the control information pertains to feedback signaling. A number M1 of the M bits of the subpattern is assigned to represent an assignment indication, and a number M2 of the M bits of the subpattern is assigned to represent a resource indication in which M1 and M2 are determined based on a size indication pertaining to the feedback signaling. The disclosure also pertains to related methods and devices.

Abstract: A method by a wireless device configured for providing Hybrid Automatic Repeat Request (HARQ) feedback with a HARQ codebook includes receiving a scheduling command that schedules a Physical Downlink Shared Channel (PDSCH) corresponding to a HARQ process associated with a HARQ process identifier that is enabled. Based on the scheduling command, the wireless device disables HARQ feedback for the PDSCH corresponding to the HARQ process associated with a HARQ process identifier that is enabled.

Abstract: According to some embodiments, a method for use in a user equipment (UE) of managing a listen-before-talk (LBT) contention window size comprises performing a first LBT procedure using a first contention window size and priority class for a first uplink transmission in unlicensed spectrum. The first uplink transmission comprises an acknowledged transmission. The method further comprises transmitting a second uplink transmission. The second uplink transmission comprises an un-acknowledged transmission. The method further comprises receiving an acknowledgement for the first uplink transmission, and modifying both the first contention window size and a second contention window based on the received acknowledgement. The method further comprises performing a second LBT procedure using the second contention window size and a second priority class for a third uplink transmission in unlicensed spectrum. The third uplink transmission comprises an un-acknowledged transmission.

Abstract: Embodiments herein relate to a method performed by a scheduling node for scheduling an uplink transmission from a wireless device to the scheduling node, which wireless device is connected to a Primary Cell, Pcell, of the scheduling node in a licensed or unlicensed frequency band, and wherein the wireless device is also connected to at least one Secondary Cell, SCell, in an unlicensed frequency band. The scheduling node determines at least one Listen Before Talk. LBT, parameter associated with an LBT procedure and informs the wireless device about the determined at least one LBT parameter in a scheduling grant of the uplink transmission.

Abstract: A method of operating a wireless communication device comprises identifying a first start position for performing uplink (UL) transmission in unlicensed spectrum during a first transmission time interval, performing UL transmission in the first transmission time interval (TTI) according to the first start position, identifying a second start position for performing UL transmission in unlicensed spectrum during a second TTI, wherein the first and second start positions correspond to different symbol offsets within the respective first and second TTIs, and performing UL transmission in the second TTI according to the second start position.

Abstract: A wireless device monitors search spaces by receiving an orthogonal frequency-division multiplexing, OFDM, symbol in a downlink slot. The OFDM symbol is included in a control-resource set, CORESET, of resource elements configured to carry control information. The CORESET is associated with at least one property. The wireless device identifies at least one first property of the at least one property of the CORESET. Then, the wireless device monitors at least one particular search space for a control message related to the wireless device based on the identified at least one first property of the CORESET.

Abstract: Embodiments of systems and methods for operating wireless communication devices (e.g., User Equipments (UEs)) as initiating and responding devices in a Frame-Based Equipment (FBE) New Radio (NR) Unlicensed (NR-U) network are disclosed. The proposed methods allow operating the NR-U network as an FBE system in a flexible manner that supports a wide range of deployments not limited to the UE operating as a responding device. In some embodiments, methods to operate UEs as initiating and responding devices in a FBE-based NR-U network are disclosed.

Abstract: Systems and methods are disclosed herein that relate to multiple candidate starting points for a transmit burst in unlicensed spectrum. In some embodiments, a method of operation of a radio access node for performing a transmit burst in an unlicensed spectrum comprises transmitting a transmit burst in an unlicensed spectrum, wherein the transmit burst spans multiple subframes/slots and the transmitting of the transmit burst starts at one of a plurality of candidate starting points defined in at least a first subframe/slot of the transmit burst that occurs after successful completion of a Listen-Before-Talk (LBT) procedure for the transmit burst. In this manner, a radio access node (e.g., an enhanced or evolved Node B (eNB) in Long Term Evolution (LTE)) has flexibility to transmit a downlink transmit burst starting at different starting positions based on LBT outcome.

Abstract: Channel state determination is performed at a user equipment (UE) of a mobile network. The UE determines one or a plurality of time intervals that may be used for channel measurements, performs a plurality of signal power measurements associated each to one of the time intervals to be used for channel measurement and generates a channel state information as a function of the plurality of the signal power measurements. Information comprising an indication of a plurality of time intervals that may be used for received signal power measurements is generated and sent from an access node (eNB) to the UE. The eNB evaluates a measurement report, received from the UE, that comprises received signal power measurements associated each to one of the time intervals.

Abstract: Embodiments herein relate to a method performed by a user equipment, UE (10), for communicating in a wireless communication network. The UE (10) receives a wake-up signal with a multibit indication from a radio network node (12), wherein the multibit indication comprises a first bit indicating to start or not to start, for a first cell, an on-duration timer at one or more of the next occurrence of an on-duration, and a second bit indicating to apply dormancy or non-dormancy behavior on a second cell at the next occurrence of an on-duration for the second cell. The UE (10) further performs an action related to the wake-up signal taking the received multibit indication into account.