Abstract: A method by a wireless device (110) includes receiving a first Downlink Semi-Persistent Scheduling (DL SPS) assignment and a second DL SPS assignment from a network node (160). At least one resource associated with the first DL SPS assignment and at least one resource associated with the second DL SPS assignment are at least partially overlapping. The wireless device compares priority information associated with each of the first DL SPS assignment and the second DL SPS assignment and selects a one of the first DL SPS assignment and the second DL SPS assignment that has a higher priority based on the priority information. The wireless device attempts to decode the Physical Downlink Shared Channel (PDSCH) according to the selected one of the first DL SPS assignment and the second DL SPS assignment that has the higher priority.

Abstract: Systems and methods are disclosed for data burst volume indication for Time Sensitive Communication (TSC). In one embodiment, a method performed by Radio Access Network (RAN) node comprises receiving, from a core network (CN) node, one or more parameters, in additional to a maximum data burst volume (MDBV) parameter, that describe one or more data volume characteristics of a Quality of Service (QoS) flow. In this manner, compared to always assuming the worst-case scenario with the MDBV, the RAN node has a more accurate understanding of the traffic characteristics, which allows the RAN node to optimally schedule radio resources to cater to the data volume.

Abstract: A terminal device for a wireless communication network is configurable with a plurality of transmission time intervals. An example method comprises: receiving a grant message comprising an indication of radio resources in which the terminal device can transmit one or more wireless messages, the radio resources being configured according to a first transmission time interval of the plurality of transmission time intervals; determining the presence of data to transmit, the data being associated with a logical channel; determining a maximum transmission time interval associated with the logical channel; and, responsive to a determination that the maximum transmission time interval associated with the logical channel is less than the first transmission time interval, transmitting a scheduling request message. The scheduling request message is configured according to a second transmission time interval of the plurality of transmission time intervals, shorter than the first.

Abstract: There is provided mechanisms for triggering uplink PDU duplication from a user equipment. A method is performed by a network node. The method comprises configuring the user equipment with an RLC URLLC mode. According to the RLC URLLC mode the user equipment is configured with an RLC trigger for the user equipment to perform uplink PDU duplication for an URLLC service.

Abstract: According to one aspect, a source network node configured to communicate with a wireless device (WD) and a target network node is described. The source network node is configured to obtain timing information associated with a Packet Data Convergence Protocol (PDCP) resource. The PDCP resource corresponds to a packet scheduled for downlink transmission from the source network node or uplink transmission from the WD. The source network node is further configured to transmit the timing information associated with the PDCP resource to the target network node for the target network node to determine, after a handover request has been transmitted by the source network node, whether to discard or cause the WD to discard the PDCP resource or the packet based on the timing information.

Abstract: Handling overlapping of multiple physical uplink shared channels (a combination of one or more PUSCHs and PUCCHs) is disclosed herein. In one embodiment, a method performed by a wireless device for handling an overlapping group of transmissions with differing transmission priorities comprises determining that at least one grant-specific uplink (UL) resource of multiple grant-specific UL resources overlaps with two other grant-specific UL resources of the plurality of grant-specific UL resources. The method further comprises dividing overlapping grant-specific UL resources of the multiple grant-specific UL resources into a plurality of groups such that each group of the plurality of groups only contains grant-specific UL resources that are non-overlapping. The method also comprises identifying, from the plurality of groups, a group that contains a grant-specific UL resource having a highest transmission priority.

Abstract: A technique for using radio resources in fixed frame periods, FFPs, (500) on a channel for radio communication in a radio network comprising a first node (100) and a second node (200) is described. Each of the FFPs (500) comprises an idle time, IT, (502) for clear channel assessment, CCA, (506) of the channel and a maximum channel occupancy time, M-COT, (504) for occupying the channel depending on the CCA (506). As to a method aspect of the technique performed by the first node (100), a method (300) comprises the step of selectively monitoring (302) the radio resources in the FFPs (500) on the channel. The selective monitoring (302) comprises refraining from monitoring a first set (602) of the radio resources, which is allocated to a first message of the second node (200) and which is partially or completely in the IT (502). Alternatively or in addition, the method (300) comprises the step of selectively transmitting (304) on the radio resources in the FFPs (500) on the channel.

Abstract: Embodiments include methods performed by a source node for handover of a user equipment (UE) from a source cell served by the source node in a wireless network. Such methods include transmitting, in the source cell according to a reference time delivery configuration, one or more messages that include respective reference times in relation to corresponding source cell transmission events. Such methods also include transmitting, to a target node in the wireless network, the reference time delivery configuration in relation to a request to handover the UE from the source cell to a target cell served by the target node. Other embodiments include complementary methods performed by the target node, as well as network nodes configured to perform such methods.

Abstract: Embodiments include methods for a user equipment (UE) configured to operate in a radio access network (RAN). Such methods include obtaining data for transmission during a particular one of a plurality of periodic occasions during which the UE has been granted resources for uplink data transmission. The data includes first and second protocol data units (PDUs) associated with respective first and second hybrid ARQ (HARQ) processes. At least one of the first and second PDUs is for retransmission after failed transmission during an earlier one of the occasions. Such methods include selecting the first PDU or the second PDU for transmission during the particular occasion based on at least one of the following: priorities of logical channels with data included in the first and second PDUs. and whether one or both of the first and second PDUs are for retransmission. Other embodiments include complementary methods for a RAN node.

Abstract: In a method for adapting a mobile network, a terminal is connected to a first access node of the mobile network via a first connection and to a second access node via a second connection. The first access node controls a data transmission for the terminal and the second access node assists in the data transmission for the terminal. The method comprises determining whether a quality of at least one of the first connection and the second connection is degraded, acquiring quality degradation information about the degradation of the quality of at least one of the first connection and the second connection based on the step of determining, and adapting the mobile network based on the step of acquiring.

Abstract: A wireless device is configured with a first configured grant associated with a first hybrid automatic repeat request (HARQ) pool and a second configured grant associated with a second HARQ pool. The first HARQ pool at least partially overlaps with the second HARQ pool, and the second configured grant partially overlaps with the first configured grant. For the first configured grant, the wireless device selects a first HARQ process from the first HARQ pool. For the second configured grant, the wireless device selects a second HARQ process from the second HARQ pool. The first HARQ process selected for the first configured grant is different than the second HARQ process selected for the second configured grant. The wireless device performs uplink transmission or retransmission for the first configured grant or the second configured grant.

Abstract: Techniques for inter base station handovers are provided for the case where a wireless device is operating in a PDCP packet duplication mode. The handover techniques enable the wireless device to transition from PDCP packet duplication with the source cell to DAPS and to transition back to PDCP packet duplication with the target cell when the handover is complete. In some embodiments, the RLC entities established with the source cell are preserved during the inter base station handover. The handover techniques ensure that QoS requirements for URLLC can be met during the inter base station handover.

Abstract: At least one Packet Data Convergence Protocol (PDCP) packet duplication leg is configured with a logical channel prioritization (LCP) restriction, restricting a logical channel in the duplication leg to which transmission resources are intentionally not available. Stale packets, (not transmitted due to a lack of resources) are discarded, so the current packet is always at the top of the queue. PDCP duplication can then be activated quickly when needed, such as in survival time mode, as it has already been configured, and the current packet is always ready for transmission. The transmission resources can be dynamically allocated by the network by transmitting a DCI command (e.g., the Configured Grant type 2 activation or dynamic grant with a specific PHY-priority-index). Alternatively, the transmission resource can be allocated beforehand, but scarcely, such that it occurs (i.e., is available) every N-th packet, and so there is a duplication for every N-th packet.

Abstract: A method by a wireless device (110) includes receiving a first Downlink Semi-Persistent Scheduling (DL SPS) assignment and a second DL SPS assignment from a network node (160). At least one resource associated with the first DL SPS assignment and at least one resource associated with the second DL SPS assignment are at least partially overlapping. The wireless device compares priority information associated with each of the first DL SPS assignment and the second DL SPS assignment and selects a one of the first DL SPS assignment and the second DL SPS assignment that has a higher priority based on the priority information. The wireless device attempts to decode the Physical Downlink Shared Channel (PDSCH) according to the selected one of the first DL SPS assignment and the second DL SPS assignment that has the higher priority.

Abstract: According to certain embodiments, a method performed by a wireless device comprises receiving a first grant and a second grant from a network node. The first grant and the second grant are overlapping. The method comprises determining a prioritized one of the first grant and the second grant and constructing a Medium Access Control (MAC) Protocol Description Unit (PDU) for the prioritized grant of the first grant and the second grant. According to certain embodiments, a method performed by a network node comprises transmitting a first grant and a second grant to a wireless device. The first grant and the second grant are overlapping. The method comprises receiving a transmission from the wireless device on a prioritized one of the first grant and the second grant.

Abstract: A terminal device for a wireless communication network is configurable with a plurality of transmission time intervals. An example method comprises: receiving a grant message comprising an indication of radio resources in which the terminal device can transmit one or more wireless messages, the radio resources being configured according to a first transmission time interval of the plurality of transmission time intervals; determining the presence of data to transmit, the data being associated with a logical channel; determining a maximum transmission time interval associated with the logical channel; and, responsive to a determination that the maximum transmission time interval associated with the logical channel is less than the first transmission time interval, transmitting a scheduling request message. The scheduling request message is configured according to a second transmission time interval of the plurality of transmission time intervals, shorter than the first.

Abstract: In a method for adapting a mobile network, a terminal is connected to a first access node of the mobile network via a first connection and to a second access node via a second connection. The first access node controls a data transmission for the terminal and the second access node assists in the data transmission for the terminal. The method comprises determining whether a quality of at least one of the first connection and the second connection is degraded, acquiring quality degradation information about the degradation of the quality of at least one of the first connection and the second connection based on the step of determining, and adapting the mobile network based on the step of acquiring.

Abstract: Handling overlapping of multiple physical uplink shared channels (a combination of one or more PUSCHs and PUCCHs) is disclosed herein. In one embodiment, a method performed by a wireless device for handling an overlapping group of transmissions with differing transmission priorities comprises determining that at least one grant-specific uplink (UL) resource of multiple grant-specific UL resources overlaps with two other grant-specific UL resources of the plurality of grant-specific UL resources. The method further comprises dividing overlapping grant-specific UL resources of the multiple grant-specific UL resources into a plurality of groups such that each group of the plurality of groups only contains grant-specific UL resources that are non-overlapping. The method also comprises identifying, from the plurality of groups, a group that contains a grant-specific UL resource having a highest transmission priority.

Abstract: A method performed in a User Equipment, UE, for handling handover from a source access node to a target access node is provided. The UE receives (501) a handover command message from the source access node. The handover command message includes parameters required for deriving a security context associated with the target access node. The UE establishes (502) a radio connection with the target access node. When detecting (503) that a security context switching criterion is fulfilled, the UE stops (504) to use a security context associated with the source access node.

Abstract: According to an aspect, a UE in an uplink split-bearer configuration is configured to transmit PDUs by a first RLC entity via a first uplink transmission path and/or by a second RLC entity via a second uplink transmission path. The UE determines a total amount of data volume from PDCP data volume and RLC data volume pending for initial transmission in the two RLC entities. The UE decides whether submission of PDCP data volume is allowed to either of the two RLC entities or to only the first RLC entity, based on whether the total amount of data volume meets or exceeds a first threshold. The UE also reports the PDCP data volume to both the first and second uplink transmission paths or only the first uplink transmission path, based on whether the total amount of data volume meets or exceeds a first threshold.