Abstract: Methods and apparatus are provided to support CBG-based retransmission on configured UL resources. The base station provides downlink feedback information (DPI) to the UE for one or more HARQ processes. The DPI comprises TB-level feedback, retransmission control information, and CBG-level feedback. The TB-level feedback indicates, for each HARQ process, ACK/NACK of a transport block associated with the HARQ process. The retransmission control information indicates, for each NACK'ed TB, whether the base station expects retransmission at the TB level or a CBG level. The CBG-level feedback indicates, for each NACK'ed TB where the CBG-indicator bitmap indicates code block group level retransmission, ACK/NACK for one or more CBGs in the NACK'ed transport block.

Abstract: Methods and systems for setting Hybrid Automatic Repeat Request (HARQ) timing for Physical Downlink Shared Channel (PDSCH) with a pending PDSCH-to-HARQ-timing-indicator (PHTI) are provided. In one aspect, a method performed by a wireless device comprises: receiving a first Downlink Control Information (DCI) associated with a first Downlink (DL) data transmission, the first DCI comprising a non-numerical PHTI; receiving the first DL data transmission; determining a HARQ feedback for the first DL data transmission; receiving a second DCI associated with a second DL data transmission, the second DCI comprising a numerical PHTI indicating a location for HARQ feedback associated with the second DL data transmission; setting the location of HARQ feedback associated with the first DL data transmission to be the same as the location of HARQ feedback associated with the second DL data transmission; and transmitting the HARQ feedback associated with the first DL data transmission at the set location.

Abstract: A method and apparatus are disclosed for configured grant uplink control information (UCI) mapping rules. In one embodiment, a network node is configured to transmit downlink control information for a configured grant physical uplink shared channel, CG-PUSCH; and receive configured grant uplink control information, CG-UCI, on the CG-PUSCH, the CG-UCI being mapped to the CG-PUSCH based at least in part on a presence of at least one Hybrid Automatic Repeat reQuest-acknowledgement, HARQ-ACK. In another embodiment, a wireless device is configured to receive, from the network node, downlink control information for a configured grant physical uplink shared channel, CG-PUSCH; and transmit a configured grant uplink control information, CG-UCI, on the CG-PUSCH, the CG-UCI being mapped to the CG-PUSCH based at least in part on a presence of at least one Hybrid Automatic Repeat reQuest-acknowledgement, HARQ-ACK.

Abstract: A radio access node or wireless device performs LBT on a channel and dynamically determines a transmission starting point on the channel, based on whether the LBT succeeds before or after a slot boundary between a slot n and a previous slot n?1. In response to determining that the LBT succeeds before the slot boundary, a transmission scheduled for the slot n is extended to start earlier, in the previous slot n?1. Otherwise, in response to determining that the LBT succeeds after the slot boundary, either a transmission scheduled for a next slot n+1 is extended to start earlier, in the slot n, or a transmission scheduled for the a second mini-slot of the slot n is extended to start earlier, in a first mini-slot of the slot n.

Abstract: A method in a wireless device (110) comprises obtaining (104) information related to a signal transmission configuration for autonomous uplink transmission by the wireless device, the information comprising: a set of pre-allocated resources for use by the wireless device in performing autonomous uplink transmission on at least one secondary cell established between the wireless device and a network node (115), and a periodicity associated with the set of pre-allocated resources. The method comprises performing (1008) autonomous uplink transmission according to the obtained information related to the signal transmission configuration.

Abstract: A wireless device receives downlink control information (DCI) from a network node, determines a physical downlink shared channel (PDSCH) group based on information in the received DCI, and transmits a hybrid automatic hybrid automatic repeat request acknowledgement (HARQ-ACK) report to the network node based on the determined PDSCH group.

Abstract: A method and apparatus are disclosed for time resources for NRU configured UL. In one embodiment, a network node is configured to configure a wireless device (WD) with at least one configured grant, CG, uplink transmission configuration; and receive signaling based at least in part on the at least one CG uplink transmission configuration. In one embodiment, a wireless device (WD) is configured to obtain at least one configured grant, CG, uplink transmission configuration; and transmit signaling based at least in part on the obtained at least one CG uplink transmission configuration.

Abstract: There is disclosed a method of operating a wireless device in a wireless communication network, the method including performing a clear channel assessment (CCA) procedure in an idle interval of a first fixed frame period preceding a second fixed frame period, wherein the start of a first configured transmission occasion coincides with the start of the channel occupancy interval of the second fixed frame period. The method further includes transmitting communication signaling based on the result of the CCA procedure. The disclosure also pertains to related devices and methods.

Abstract: A method in a wireless device for performing an uplink transmission to a base station in a wireless access system, wherein the wireless access system comprises one or more mini-slot configurations, the method comprising performing a clear channel assessment for identifying a transmission opportunity and determining the start of a mini-slots. The wireless device performing an uplink transmission within the determined mini-slot wherein the transmission is performed according to a predetermined configuration for mini-slot communication between the base station and the wireless device, such that the base station can identify the start of the uplink transmission.

Abstract: A network node (14) communicates with a wireless device (12) to provide Hybrid Automatic Repeat Request (HARQ) feedback for autonomous uplink transmissions in an unlicensed spectrum. The network node receives a plurality of autonomous uplink transmissions from the wireless device in the unlicensed spectrum, and transmits HARQ feedback for the plurality of autonomous uplink transmissions to the wireless device, the HARQ feedback comprising a bit map of some or all HARQ processes configured for at least one cell (16) and a corresponding bit acknowledgement mapped to each HARQ process.

Abstract: A wireless device (300, 400), e.g., a wireless communication device (e.g., a UE) or a network node (e.g., an eNB) having a Medium Access Control (MAC) layer (410) and a physical (PHY) layer (430) configured to send/resend transmissions is presented herein. The MAC layer (410) sends transmissions to the PHY layer (430) for transmitting, by the PHY layer (430), to a remote wireless device (300, 400). The PHY layer (430) receives the transmission from the MAC layer (410), and attempts to send the transmission. The PHY layer (430) further indicates to the MAC layer (410) whether the attempt to send the transmission, by the PHY layer (430), was successful. Responsive to the indication, the MAC layer (410) determines whether the attempt, by the PHY layer (430), to send the transmission was successful. The MAC layer (410) then selectively indicates to the PHY layer (430) whether to attempt to resend the transmission responsive to the determination.

Abstract: Apparatus and methods for performing a hybrid automatic repeat request, HARQ, process are disclosed. In one embodiment, a method in a wireless device for transmission of redundancy versions in a HARQ process includes determining, by the wireless device, a redundancy version, RV, for transmission by the wireless device, the RV being based at least on a coding rate and performing a transmission according to the determined RV. In one embodiment, a method in a network node is provided including receiving, from a wireless device, a transmission corresponding to a redundancy version, RV, the RV being based at least on a coding rate.

Abstract: There is disclosed a receiving radio node in a wireless communication network, the method including transmitting feedback signaling based on a received control information message scheduling multiple separate data transmission for reception by the receiving radio node. The disclosure also pertains to related devices and methods.

Abstract: A radio device (10) controls a first uplink radio transmission on a first carrier (33) from an unlicensed frequency spectrum on the basis of a first access scheme. Further, the radio device (10) controls a second uplink radio transmission on a second carrier (34) from the unlicensed frequency spectrum. The latter is accomplished on the basis of a second access scheme which is different from the first access scheme. Further, the radio device (10) coordinates the first uplink radio transmission and the second uplink radio 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: 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: 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: There is provided a method, in a wireless device, for communicating with a network node using autonomous Uplink (UL) access. The method comprises: after sending a data transmission to a network node, starting a retransmission window associated with a feedback process of the data transmission, the retransmission window including a first timer; and in response to detecting an absence of a feedback signal during a time period given by the first timer, retransmitting the data after expiry of the first timer.

Abstract: A method performed by a wireless device (110) includes receiving a configuration for one or more data transmission starting positions for a configured uplink, UL, in unlicensed spectrum. The one or more data transmission starting positions include at least a first starting position. The method further includes performing an UL transmission at one of the one or more data transmission starting positions based on when the wireless device is able to access a channel. The UL transmission includes UL control information, UCI, multiplexed in a Physical Uplink Shared Channel, PUSCH. The UCI carries one or more parameters for unlicensed spectrum.