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: According to some embodiments, a method for use in a frequency-hopping wireless transmitter for transmitting in unlicensed spectrum comprises: obtaining a configuration for a plurality of frequency channels in unlicensed spectrum; and transmitting a data transmission according to a frequency-hopping pattern across the plurality of frequency channels. The configuration for the plurality of frequency channels comprises a first subset of frequency channels for downlink transmission and a second subset of frequency channels for uplink transmission. The frequency channels in the first and second subsets are mutually exclusive. In some embodiments the first and second subset of frequency channels each comprise 160 frequency channels in the 2.4 GHz band, or 50 frequency channels in the 915 MHz band.

Abstract: The invention relates to a method for operating a network node in a wireless network. The method includes detecting cross-link interference on one or more time slots used when communicating with the network node, identifying an aggressor node generating the detected cross link interference, and transmitting, to the aggressor node, a signal having an indication of slot number and/or a transmission direction of the detected cross link interference.

Abstract: Embodiments include methods, in a base station operating in a wireless communications network, for over-the-air synchronization with a cell served by a further base station. Such methods include receiving time synchronization information and muting availability information associated with a plurality of further base stations serving a plurality of cells. Such methods also include determining that a cell served by a first further base station is a preferred synchronization source cell for the base station, and sending, to one or more second further base stations, respective requests to activate muting in one or more of the cells served by the second further base stations. Embodiments include complementary methods performed by a further base station, and base stations configured to perform operations corresponding to the exemplary methods.

Abstract: Apparatuses and methods are disclosed for block interleaving. In one embodiment, a method includes generating an interleaver sequence for a control resource set, CORESET, configuration for a physical downlink control channel, the interleaver sequence associated with an interleaving matrix; optionally, for each one of an allowed value of number of rows for the interleaving matrix, determining a number of null entries to be added to the interleaving matrix; and selecting a number of rows, R, for the interleaving matrix such that the number of null entries to be added to the interleaving matrix is: no more than a number of columns, C, of the interleaving matrix; and optionally, the smallest among the numbers of null entries determined for each of the allowed values of number of rows for the interleaving matrix. In another embodiment, a method includes decomposing the interleaver sequence.

Abstract: According to some embodiments, a method in a network node for configuring monitoring occasions for use in a network node of a wireless communication network comprises determining a physical downlink control channel (PDCCH) search space monitoring configuration for a wireless device. The PDCCH search space monitoring configuration comprises a monitoring periodicity and a number of blind decodes for each search space of a plurality of search spaces over a plurality of slots. The method further comprises sending the monitoring configuration to the wireless device. A method in a wireless device comprises receiving the monitoring configuration and monitoring each search space according to the monitoring configuration.

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: Embodiments herein relate to a communication terminal (10) for handling communication, which communication terminal (10) is being served by a radio access node (12, 13) in a first cell (11) on a carrier of a licensed frequency spectrum and cross-carrier scheduled in a second cell (14) on a carrier of an unlicensed frequency spectrum by the radio access node (12, 13) via the first cell (11). The communication terminal receives an indication that data may be scheduled for the communication terminal (10) on a data channel in the second cell (14). The communication terminal attempts to detect presence of the data channel intended for the communication terminal (10). Then, in case the communication terminal (10) detects presence of the data channel intended for the communication terminal (10), the communication terminal (10) decodes the data channel.

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: Methods and systems for dynamically adapting an Energy Detection (ED) threshold for use in an unlicensed network are provided. According to one aspect, a method for dynamically adapting ED threshold for use in an unlicensed network comprises determining an ED threshold based on a current state of an unlicensed network and using the determined ED threshold for channel sensing and/or signaling the ED threshold to another entity for use during channel sensing.

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: Systems and methods are disclosed herein for transitioning between different scheduling delay assumptions. In some embodiments, a method performed by a wireless device comprises monitoring, during a first slot, for a downlink control channel comprising downlink control information that schedules a transmission for the wireless device with an assumption of a first scheduling delay that is equal to or exceeds a first value. The method further comprises determining that the wireless device is to switch from the assumption of the first scheduling delay to an assumption of a second scheduling delay that is equal to or exceeds a second value that is less than the first value. The method further comprises monitoring, during one or more later slots that occur after the first slot, for a downlink control channel comprising downlink control information that schedules a transmission for the wireless device with the assumption of the second scheduling delay.

Abstract: A method of controlling a user equipment (UE) comprises determining an operating environment of the UE, and selectively instructing the UE to perform a first or second listen-before-talk (LBT) procedure or to use a first or second set of LBT parameters, according to the determined operating environment.

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. 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: 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: 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 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: Systems and methods for determining an uplink control channel resource to use for transmitting uplink control information to a network node are disclosed. in some embodiments, a method performed by a wireless device comprises receiving a first downlink control channel message that schedules a first downlink shared channel transmission, receiving a second downlink control channel message that schedules a second downlink shared channel transmission, and determining an uplink control channel resource to use for transmitting uplink control information to a network node.

Abstract: According to some embodiments, a method in a network node for configuring monitoring occasions for use in a network node of a wireless communication network comprises determining a physical downlink control channel (PDCCH) search space monitoring configuration for a wireless device. The PDCCH search space monitoring configuration comprises a monitoring periodicity and a number of blind decodes for each search space of a plurality of search spaces over a plurality of slots. The method further comprises sending the monitoring configuration to the wireless device. A method in a wireless device comprises receiving the monitoring configuration and monitoring each search space according to the monitoring configuration.

Abstract: Systems and methods are disclosed that relate to management of uplink (UL) transmissions in unlicensed spectrum. In some embodiments, a method of operation of a network node in a wireless communication network comprises signaling, to a wireless device, an indication of one or more allocated sets of Resource Blocks (RBs) that are allocated to the wireless device by a UL grant for transmission on a UL carrier in an unlicensed frequency spectrum. The one or more allocated sets of RBs are one or more of a plurality of defined sets of RBs that correspond to a plurality of interlaces, respectively, that each spread out across an entire bandwidth of the UL carrier. In this manner, higher UL user and system performance can be obtained.