Abstract: Embodiments of the present disclosure relate to devices, methods, apparatuses and computer readable storage media of retransmission mechanism for configured grant uplink transmission. The method comprising transmitting, to a second device, a transport block while starting a configured grant retransmission timer for autonomous retransmission of the transport block; in response to receiving, from the second device, a feedback indicating unsuccessful reception of the transport block, adjusting expiry time of the configured grant retransmission timer without starting the autonomous retransmission of the transport block; determining whether scheduling information for retransmission of the transport block is received before the adjusted configured grant retransmission timer expires; and in response to determining that the scheduling information is received, retransmitting the transport block while stopping the configured grant retransmission timer.

Abstract: In an example, there is provided an apparatus configured to store a bandwidth part arrangement of the bandwidth part (301, 305, 307) into plural physical resource blocks which are grouped into bundles forming a bundle grid (330-370), the bandwidth part (301, 305, 307) comprising at least one guard band (320), determine at least one of the bundles as partially overlapping with the at least one guard band (320), each partially overlapping bundle comprising overlapping and non-overlapping physical resource blocks, and to at least one of: 1) re-assign at least one of the non-overlapping physical resource blocks to a non-overlapping bundle immediately preceding or immediately following, in the bundle grid (330-370), the partially overlapping bundle, 2) re-align a first physical resource block of the non-overlapping bundle immediately following the partially overlapped bundle to coincide with a guard band end, and 3) re-align a last physical resource block of the non-overlapping bundle immediately preceding the par

Abstract: According to an example aspect, there is provided an apparatus, configured to receive, by a user terminal, configuration for a grant-free transmission on a shared radio resource, the grant-free transmission comprising at least one collision avoidance transmission and at least one data transmission, wherein the at least one collision avoidance transmission precedes the at least one data transmission, determine a first transmission power for the at least one data transmission, determine a second transmission power for the at least one collision avoidance transmission based on information indicative to the a location of the user terminal proportionate to the a location of an access node providing a radio cell, and transmit the at least one collision avoidance transmission at the second determined power and the at least one data transmission at the determined first transmission power.

Abstract: Embodiments of the present disclosure relate to apparatuses, methods and computer readable storage media for contention window size (CWS) adjustment feedback. The first device comprises at least one processor; and at least one memory including computer program codes; the at least one memory and the computer program codes are configured to, with the at least one processor, cause the device at least to receive at least one transport block from a second device on a predetermined bandwidth part for a transmission from the second device to the first device, the at least one transport block transmitted in a set of subbands of the predetermined bandwidth part; generate a feedback based on a set of reception states of the at least one transport block in the set of subbands; and transmit the feedback to the second device so that the second device adjusts a contention window size (CWS) for a further transmission from the second device to the first device.

Abstract: Systems, methods, apparatuses, and computer program products for optimizing user equipment (UE) oriented link adaptation. One method may include receiving a configuration of a predefined transmission power for one or more cases. The method may also include calculating a required transmission power based on at least a specific pathloss of the one or more cases. In addition, the method may include, selecting, based on the calculation of the required transmission power, a modulation coding scheme level that does not exceed the predefined transmission power for a radio transmission. Further, the method may include performing the radio transmission based on the selected modulation coding scheme level and the calculated required transmission power.

Abstract: According to a first embodiment, a method may include initiating, by a user equipment, a first countdown timer associated with a first initial value and a first timer-interval, and a second countdown timer associated with a second initial value and a second timer-interval. The method may further include determining, by the user equipment, whether at least one first indication is detected during the first timer-interval. The method may further include adjusting, by the user equipment, at least one of the first countdown timer or the second countdown timer based on the determining.

Abstract: Systems, methods, apparatuses, and computer program products for a signaling arrangement for a wireless system are provided. One method includes transmitting a short control signaling (SCS) message to one or more user equipment (UE). The SCS message may comprise at least a reference signal part and an optional control signal part. The reference signal part may comprise reference signals that allow the UE to perform at least one of: cell search, synchronization, fine time/frequency tracking, radio resource management (RRM) measurements, radio link monitoring, or channel state information (CSI) reporting. In an embodiment, the control signal part may indicate at least one of: whether the cell is ON or OFF, whether each subframe in a current or upcoming set of subframes are ON or OFF, TDD uplink-downlink configuration for a current or upcoming radio frame, PLMN ID to identify to which operator's network the cell belongs to, and/or system information.

Abstract: In accordance with example embodiments of the invention as disclosed herein there is a method and apparatus to perform at least identifying, by a network node, a need to perform an uplink transmission within a channel occupancy time of radio channel, wherein the network node is scheduled for performing an uplink transmission, and wherein the identifying comprises identifying an energy level of a gap of channel occupancy time of radio when indicated in downlink control information; based on the identifying, setting a duration of a transmission in the channel occupancy time of radio channel; and performing the uplink transmission based on the set duration of the transmission.

Abstract: Systems, methods, apparatuses, and computer program products for cyclic prefix (CP) extension and listen before talk (LBT) type for uplink transmissions. Specifically, certain embodiments may provide for applying a CP and/or an LBT when downlink control information (DCI) schedules two discontinuous uplink transmissions. For example, certain embodiments may provide for determining the LBT type and CP extension for jointly scheduled aperiodic sounding reference signal and physical uplink shared channel/physical uplink control channel transmissions. When the two or more transmissions are non-consecutive, the first one of the transmissions may apply the CP extension and the LBT type indicated by the scheduling DCI. For the second transmission, the CP extension may depend on the CP extension indicated in the DCI.

Abstract: A method may include receiving, by a user equipment from a network entity, a first downlink (DL) control signal activating semi-persistent scheduling (SPS) of a first set of downlink data transmissions, the downlink control signal indicating an applicable hybrid automatic repeat request (HARQ) feedback timing for the first set of downlink data transmissions and receiving one or more of the first set of downlink data transmissions. The user equipment may determine that an applicable HARQ feedback timing for a second set of downlink data transmission previously received with an inapplicable HARQ feedback timing has not been provided. In response to the determination, the user equipment may determine a HARQ feedback timing for the one or more of the first set of downlink data transmissions based a second DL control signal indicating an applicable HARQ feedback timing received after reception of the one or more of the first set of downlink data transmissions.

Abstract: A method may include, by an apparatus, sensing at least one beam; initiating a channel occupancy time based on the sensing; transmitting at least one first downlink transmission on the at least one beam during the channel occupancy time, wherein the at least one first downlink transmission on the at least one beam triggers at least one first uplink transmission on the at least one beam during the channel occupancy time; receiving the at least one first uplink transmission on the at least one beam during the channel occupancy time; determining interference condition on the at least one beam based on the at least one first uplink transmission; and scheduling at least one second downlink transmission or at least one second uplink transmission on the at least one beam with restriction during a rest of the channel occupancy time when the interference condition meets at least one threshold requirement.

Abstract: Multiplexing of information may be useful in a variety of communication scenarios, such as communication of control information. For example, certain wireless communication systems may benefit from uplink control information multiplexing for downlink two orthogonal frequency division multiplexed symbol short transmission time interval and one millisecond transmission time interval. A method can include receiving, at a user equipment, a downlink assignment scheduling first downlink data transmission in a first transmission time interval duration. The method can also include determining when to provide acknowledgment feedback in an uplink corresponding to the scheduled downlink data transmission. The determination can take into account whether the user equipment is scheduled for downlink data transmission in a second transmission time interval duration. The second transmission time interval duration can be shorter than the first transmission time interval duration.

Abstract: Solutions for determining a resource for transmitting/detecting an uplink (UL) control signal are proposed. For example, a method includes receiving a physical resource configuration and/or an assigned resource indicator for transmitting the UL control signal, wherein the physical resource configuration indicates a plurality of resources in frequency domain. The method also includes determining a resource based on the received physical resource configuration and/or the assigned resource indicator; and adjusting the determined resource for transmitting the UL control signal based on at least one of an outcome of downlink (DL) listen before talk (LBT) performed prior to the transmission of the UL control signal, an outcome of UL LBT performed prior to the transmission of the UL control signal, and a time gap between the UL LBT and the transmission of the UL control signal.

Abstract: A method, apparatus, and computer program product where a UE receives a RACH configuration, comprising time/frequency resources for each RACH Preamble and a corresponding Msg1 Data Part. The UE selects the RACH preamble, transmits the selected RACH preamble, and ascertains whether the selected RACH preamble is associated with a 2-step RA procedure. The UE determines at least one resource for Msg1 Data Part based on the selected RACH preamble. The UE performs a LBT preceding the Msg1 Data Part at a predetermined point in time and transmits the Msg1 Data Part provided that the channel is unoccupied based on the LBT. Likewise, a gNB sending a RACH configuration to the UE, receiving a RACH preamble back, ascertaining that RACH preamble is associated with a 2-step RACH procedure, and determining at least one resource for Msg1 Data Part based on the received RACH preamble.

Abstract: According to an aspect of the present disclosure, a method includes transmitting, by a network entity, at least one downlink control signal to a user equipment. The downlink control signal comprises a current slot format indicator and a further indicator. The current slot format indicator indicates at least one slot format combination. The further indicator comprises one or more of: at least one offset, at least one applicability indication, at least one next slot format indicator, and at least one indication of at least one channel occupancy time ending.

Abstract: In accordance with an example embodiment of the invention there is at least a method and apparatus to perform determining, by a network node, that at least one of frequency tuning, bandwidth part switching, or bandwidth switching is to be performed by at least one user equipment; and based on the determining, sending, by the network node, to the at least one user equipment one or more downlink slots, wherein the one or more downlink slots provide an indication of a time to perform the at least one of frequency toning, bandwidth part switching, or bandwidth switching by the at least one user equipment.

Abstract: In accordance with example embodiments of the invention there is at least a method and apparatus to perform receiving, by a network device, information comprising a multiple transmission time interval uplink grant with cyclic redundancy check bits scrambled by a radio network temporary identifier; determining, by the network device of a communication network, a subset of data transmissions of a previous burst of data transmissions to be retransmitted by the network device; and performing by the network device retransmission of the subset of data transmissions using scheduled resources of the uplink grant.

Abstract: A technique includes receiving, by a user device, a configuration of a set of one or more resources for an uplink channel to be used for transmission by the user device in a slot prior to a short physical uplink control channel of the slot; receiving, by the user device, a downlink control information including a downlink assignment for a downlink channel; identifying, by the user device based on the downlink assignment, a resource of the set of one or more resources for the uplink channel, and a physical uplink control channel; and transmitting, by the user device, a signal via the identified resource for the uplink channel, prior to the short physical uplink control channel of the slot.

Abstract: Systems, methods, apparatuses, and computer program products for aperiodic channel state information (CSI) reporting for enhanced carrier aggregation are provided. One method includes transmitting, by a network node, a configuration of at least two aperiodic channel state information (A-CSI) reporting modes per one or more configured downlink (DL) component carriers (CC) to at least one user equipment. The method may also include transmitting an aperiodic channel state information (A-CSI) trigger to the at least one user equipment. The transmitting of the A-CSI trigger may cause the at least one user equipment to dynamically switch between the two configured aperiodic channel state information (A-CSI) reporting modes.

Abstract: There is provided a method, comprising: detecting (200) that data from a transmitting device is scheduled to the apparatus; determining (210) a transmission time interval length applied in the transmission of the scheduled data to the apparatus; and selecting (220), at least partially based on the determined transmission time interval length, an acknowledgement feedback mode to be used for sending acknowledgment feedback for the scheduled data amongst a plurality of acknowledgement feed-back modes, wherein the selected acknowledgement feedback mode defines acknowledgement feedback timing.