Abstract: Methods, devices, communication systems, and computer program products for discarding a duplicate protocol data unit associated with a data transmission via a first signaling radio bearer or a second signaling radio bearer are described. A method for discarding a duplicate protocol data unit associated with a data transmission via a first signaling radio bearer or a second signaling radio bearer is performed by a device. The method includes receiving a protocol data unit, verifying an integrity of the received protocol data unit in an integrity verification procedure, determining whether the successfully integrity verified protocol data unit is a duplicate protocol data unit, and discarding the protocol data unit based on determining that the successfully integrity verified protocol data unit is a duplicate protocol data unit.

Abstract: A scheduling node (110) transmits, to a radio node (105) configured for sub-subframe operation, a semi-persistent scheduling (SPS) configuration message (210) configuring the radio node (105) for sub-subframe-based SPS. The SPS configuration message (210) comprises an identifier of the radio node (105) and indicates a pattern of sub-subframes (82) in which a resource allocation for the radio node (105) repeats. The radio node (105) receives the SPS configuration message (210) and configures the radio node (105) for sub-subframe-based SPS according to the SPS configuration message (210).

Abstract: According to certain embodiments, a method is disclosed for use in a wireless device. The method comprises transmitting uplink data to a network node. The uplink data is transmitted according to a semi-persistent scheduling (SPS) configuration obtained from the network node. The uplink data is transmitted without transmitting padding when no data is available for transmission. The method further comprises retransmitting the uplink data to the network node until receiving an indication to transmit new uplink data. The indication is received from the network node via a control channel.

Abstract: A transmitting radio node (12) is configured for transmitting packets in a wireless communication system (10). The transmitting radio node (12) in particular is configured to transmit packets to a receiving radio node (16) as scheduled by the receiving radio node (16) over one or more of multiple different types of radio links (18, 20) between which transmission of the packets is configured to be split or switched. The transmitting radio node (12) is also configured to receive from the receiving radio node (16) a retransmission link indication (40) that indicates over which of the multiple different types of radio links (18, 20) packet retransmission is to be performed. The transmitting radio node (12) is further configured to perform packet retransmission based on the retransmission link indication (40).

Abstract: The present disclosure generally relates to the field of queue management. More specifically, the present disclosure relates to a technique of adjusting adaptive queue management operation in a wireless communication network. A method embodiment comprises determining (S202), by an access network node (100) of the wireless communication network, whether an increase in capacity for data transmission between the access network node (100) and a wireless communication device (300) is expected, and adjusting (S204), by the access network node (100), AQM operation associated with the access network node (100), if it is determined that an increase in capacity for data transmission between the access network node (100) and the wireless communication device (300) is expected.

Abstract: A wireless device for handling uplink (UL) communication from the wireless device in a wireless communication network is configured with one or more Semi Persistent Scheduling (SPS) grants and to skip padding transmissions of SPS grant. The wireless device receives a dynamic UL grant indicating one or more resources for an UL transmission. The wireless device determines whether a Hybrid Automatic Repeat Request (HARQ) buffer for transmission of a previous transmission comprises data, which HARQ buffer is associated with a same HARQ process as the dynamic UL grant. Furthermore, the wireless device transmits the data in the HARQ buffer using one or more resources as indicated by the dynamic UL grant or as indicated by the SPS grant when the HARQ buffer comprises data, and transmits new UL data using the one or more resources as indicated by the dynamic UL grant when the HARQ buffer comprises no data.

Abstract: A network node, a wireless device for communication with a network node and corresponding methods are provided. The network node includes processing circuitry configured to stop a hybrid automatic repeat request (HARQ) process associated with data to be retransmitted and retransmit the data using a procedure that is different from the stopped HARQ process.

Abstract: There is provided a method in a user equipment for a wireless communications network, comprising: receiving a configuration message from a base station for the wireless communications network, the configuration message indicating that data to be transmitted between the user equipment and the wireless communications network is to be duplicated; and responsive to receipt of the configuration message, transmitting a first data unit and a second data unit to the wireless communications network, or receiving a first data unit and a second data unit from the wireless communications network; wherein the second data unit is a duplicate of the first data unit, and wherein the first data unit is transmitted or received using first radio resources, and the second data unit is transmitted using second radio resources that are different than the first radio resources.

Abstract: A UE operating in a network that supports dual connectivity operation is configured to minimize the transmission of unnecessary UE failure indications. The UE detects secondary cell group (SCG) failure for the UE, in response to detecting one of a plurality of SCG failure-triggering events. The UE sends a UE failure indication message, in response to the detecting SCG failure, and refrains from sending further UE failure indication messages in response to SCG failure-triggering events, until the sending of further UE failure indication messages is reenabled. In some cases, the UE sets a state of the UE to a UE prohibit state to prohibit sending further UE failure indication messages while in the UE prohibit state. In other cases, the UE starts a prohibit timer to prohibit sending further UE failure indication messages during the prohibit timer.

Abstract: In one embodiment, a method in a wireless device for adaptive HARQ retransmissions comprises receiving, from a network node, a request to initiate an adaptive hybrid automatic repeat request (HARQ) retransmission. The method comprises identifying a HARQ process associated with the HARQ retransmission request and determining whether a HARQ buffer of the HARQ process is empty. In response to determining that the HARQ buffer is empty, the method comprises not delivering the HARQ information to the HARQ process and not triggering an adaptive HARQ retransmission.

Abstract: Embodiments herein relate to a method performed by a wireless device (10) for handling uplink, UL, communication from the wireless device (10) in a wireless communication network (1), which wireless device is configured with one or more Semi Persistent Scheduling, SPS, grants and to skip padding transmissions of SPS grant. The wireless device receives a dynamic UL grant from a radio network node indicating one or more resources for an UL transmission to the radio network node. The wireless device determines that a Hybrid Automatic Repeat Request, HARQ, buffer for transmission of a previous transmission comprises data or not, which HARQ buffer is associated with a same HARQ process as the dynamic UL grant.

Abstract: Depending on data (110) available in an uplink data buffer (400) of a communication device (10) for uplink transmission and further depending on uplink radio resources previously allocated to the communication device (10) for the uplink transmission in reoccurring time intervals, a fraction (111-1) of the data (110) available in the uplink data buffer (400) is determined. A buffer status report is sent to the cellular network. The buffer status report indicates the determined fraction (111-1) of the data (110).

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.

Abstract: A UE operating in a network that supports dual connectivity operation is configured to minimize the transmission of unnecessary UE failure indications. The UE detects secondary cell group (SCG) failure for the UE, in response to detecting one of a plurality of SCG failure-triggering events. The UE sends a UE failure indication message, in response to the detecting SCG failure, and refrains from sending further UE failure indication messages in response to SCG failure-triggering events, until the sending of further UE failure indication messages is reenabled. In some cases, the UE sets a state of the UE to a UE prohibit state to prohibit sending further UE failure indication messages while in the UE prohibit state. In other cases, the UE starts a prohibit timer to prohibit sending further UE failure indication messages during the prohibit timer.

Abstract: A method performed by a source network node for handover of a wireless communication device in a first wireless communications network using a first RAT is provided. The handover is to be performed from the source network node to a target network node. The wireless communication device is configured to communicate with the source network node directly and to communicate with the source network node via a radio access node in a second wireless communications network using a second RAT. The source network node provides (401) the target network node with information about parameters relating to a communication between the wireless communication device and the source network node via the radio access node. The source network node receives (402) a feedback from the target network node. The feedback comprises an indication of whether or not the radio access node was able to keep a context of the wireless communication device in the second wireless communications network.

Abstract: The disclosure provides a method in a terminal device for a wireless communication network. The terminal device is configurable with a plurality of transmission time intervals. The method comprises; receiving a first grant message from the wireless communication network, the first grant message comprising an indication of first radio resources in which the terminal device can transmit one or more wireless messages, the first 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 first logical channel; determining a maximum transmission time interval associated with the first 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 to the wireless communication network.

Abstract: A method may be provided to operate a CU node that is coupled with first and second DU nodes. Communication is provided between the CU node and a mobile communication device through the first DU node over a first radio link. A message is received at the CU node from the first DU node that the radio link is temporarily unavailable. Responsive to receiving the message, communication between the CU node and the mobile communication device through the first DU node is suspended, wherein configuration of the first DU node to serve the mobile communication device using the first radio link is maintained. While suspending communication between the CU node and the mobile communication device through the first DU node, communication may be provided between the CU node and the mobile communication device through the second DU node over a second radio link.

Abstract: According to certain embodiments, a method by a wireless device for reporting a connection status is provide that includes receiving a message from a network node. The message may be related to a mobility set associated with the wireless device. The wireless device may determine that the wireless device is not connected to a WLAN access point included within a mobility set. A timer may be started, and the wireless device may attempt to establish a connection between the wireless device and at least one WLAN access point within the mobility set before an expiration of the timer. If the connection is established between the wireless device and the at least one WLAN access point within the mobility set before the expiration of the timer, the timer may be stopped. If the connection is not established between the wireless device and the at least one WLAN access point within the mobility set before the expiration of the timer, a report may be sent to a network node to indicate a connection failure.

Abstract: According to certain embodiments, a method by a wireless device is provided for reliable communication for short transmission time interval (TTI) through repetitions. The method includes receiving, from a network node, a configuration comprising a short TTI transmission schedule identifying a repetition factor. Based on the short TTI transmission schedule and the repetition factor, the wireless device searches for a plurality of repeated messages from the network node and combines the plurality of repeated messages.

Abstract: Methods, nodes, a wireless communication device and computer programs to be usable in association with controlling transmission of at least one data unit via a first link between a first access node and a wireless communication device and via a second link between the first access node and the wireless communication device via the second access node are described. In one embodiment, the method may be performed by the first access node and may comprise receiving first transmission delay information indicative of a transmission delay of the first link and/or second transmission delay information indicative of the second link, and controlling the transmission of said data unit based on the first and/or second transmission delay information.