Abstract: Embodiments include methods for a second node configured to serve a second cell in a wireless network. Such methods include receiving, from a first node, a mobility-related message including information associated with a plurality of first reference time information messages transmitted by the first node to a user equipment (UE). Such methods include, based on the received information, determining whether the second node can support reference time information delivery to the UE in the second cell. Such methods include, based on determining that the second node can support reference time information delivery to the UE, transmitting one or more second reference time information messages to the UE, each second reference time information message including an absolute reference time and a corresponding reference event within downlink transmissions by the second node. Other embodiments include complementary methods for the first node and network nodes configured to perform such methods.

Abstract: Systems and methods are disclosed herein for autonomous activation of a feature at a wireless communication device to meet survival time of an application consuming a communication service. In one embodiment, a method performed by a wireless communication device comprises obtaining a timer related to survival time, the survival time being an amount of time that an application consuming a communication service may continue without an anticipated message. The method further comprises autonomously activating a feature based on the timer, the feature being Packet Data Convergence Protocol (PDCP) packet duplication, one or more additional PDCP packet duplication legs in a case where PDCP packet duplication is already activated, or another mechanism that increases reliability of packet transmission.

Abstract: A user equipment starts a first timer and a second timer in response to different respective network events. The starting of the first and second timers causes the first and second timers to simultaneously elapse. In response to one of the simultaneously elapsing timers expiring, the user equipment indicates, to a network node, which of the simultaneously elapsing timers expired.

Abstract: Embodiments include methods for a user equipment (UE) to synchronize timing with a wireless network. Such methods include receiving, from a first node serving a first cell in the wireless network, a first message that includes an absolute reference time and a corresponding reference event within downlink, DL, transmissions by the first node; and determining whether the UE received, from the first node, a timing adjustment value from which the UE can estimate a propagation delay of the DL transmissions. Such methods include, based on determining that the UE did not receive the timing adjustment value, performing one of the following: transmitting, to the first node, an indication that the UE did not receive the timing adjustment value; or declaring radio link failure with respect to the first cell and establishing a connection with a second cell capable of providing the information included in the first message.

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: A method of receipt status reporting in a communication device, comprising configuring (S1) said communication device for periodic receipt status reporting by associating a first status report type with a value of a first reporting periodicity parameter and associating a second status report type with a value of second reporting periodicity parameter, said first status report type being different from said second status report type and said first reporting periodicity parameter being different from said second reporting periodicity parameter, and periodically (S2) sending receipt status reports of said first type according to said associated value of said first reporting periodicity parameter and receipt status reports of said second type according to said associated value of said second reporting periodicity parameter.

Abstract: A communication device receives an uplink grant from a node of a cellular network. The uplink grant indicates uplink radio resources allocated to the communication device in reoccurring time intervals. For each of these time intervals, the communication device selects between an active mode and an inactive mode. In the active mode the communication device performs an uplink transmission in the allocated uplink radio resources. In the inactive mode the communication device performs no uplink transmission in the allocated uplink radio resources.

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: A method performed by a core network node for a wireless communication network is provided. The method comprises: receiving a configuration message via an interface with a configuring node associated with a wired communication network, the configuration message comprising settings for a plurality of paths between a first node coupled to the wired communication network and a second node coupled to the wireless communication network, the plurality of paths carrying a plurality of data streams between the first and second nodes, the plurality of data streams comprising at least one redundant data stream; and configuring the plurality of paths within the wireless communication network according to the settings.

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: A technique for transmitting a control element, CE, for selectively activating and deactivating one or more secondary radio link control, RLC, entities configured for packet duplication in a radio communication between a radio device (504) and a radio access network, RAN is provided. The RAN comprises a first node (200; 100) and a second node (100; 200). The first node (200; 100) comprises a primary RLC (520) entity configured for the packet duplication and the second node (100; 200) comprises at least one of the one or more secondary RLC entities (522; 524; 526). As to a method aspect, a method comprises or initiates transmitting the CE from the RAN to the radio device (504), wherein the CE is indicative of an activity state of each of the one or more secondary RLC entities (522; 524; 526) configured for the packet duplication.

Abstract: According to certain embodiments, a method in a wireless device (110) includes transmitting a protocol data unit (PDU) or segment of a PDU on a first link and transmitting the PDU or the segment of the PDU on a second link. One or more retransmissions of the PDU or the segment of the PDU are scheduled on the second link. A positive acknowledgment is received from a receiver. The positive acknowledgement indicates a successful receipt of the PDU or the segment of the PDU on the first link. In response to receiving the positive acknowledgement, the one or more retransmissions of the PDU or the segment of the PDU on the second link are cancelled.

Abstract: The disclosure provides various methods for time-aware scheduling of time-sensitive network (TSN) streams in 5G networks. One method, performed in a core network associated with a radio access network (RAN), is for scheduling resources in the RAN according to a transmission schedule associated with an external network. The method comprises receiving (1210), from the external network, a transmission schedule associated with a time-sensitive data stream and sending (1220), to the RAN, a request to allocate radio resources for communication of the data stream between the RAN and a user equipment (UE). The request further comprises information related to the transmission schedule. The method also comprises receiving (1230), from the RAN, a response indicating whether radio resources can be allocated to meet the transmission schedule associated with the data stream.

Abstract: A communication device receives an uplink grant from a node of a cellular network. The uplink grant indicates uplink radio resources allocated to the communication device in reoccurring time intervals. For each of these time intervals, the communication device selects between an active mode and an inactive mode. In the active mode the communication device performs an uplink transmission in the allocated uplink radio resources. In the inactive mode the communication device performs no uplink transmission in the allocated uplink radio resources.

Abstract: A user equipment starts a first timer and a second timer in response to different respective network events. The starting of the first and second timers causes the first and second timers to simultaneously elapse. In response to one of the simultaneously elapsing timers expiring, the user equipment sends a radio link failure report to a node of a wireless communication network indicating which of the simultaneously elapsing timers expired.

Abstract: A technique for determining a radio device residence time, RDRT (620), and scheduling the radio device (100) accordingly is described. More specifically, and without limitations, according to a first method aspect, a method for determining the RDRT (620) for a radio device (100) in radio communication with a network node (200) of a telecommunications network is provided, comprising a step of setting, at the radio device (100), a first time stamp (602) of a packet of the radio communication, wherein the first time stamp (602) is indicative of a time (602) of handling (720) the packet at a first layer (506) of a protocol stack at the radio device (100). The method further comprises a step of transmitting the packet to the network node (200) through a second layer (508) of the protocol stack, the second layer (508) being below the first layer (506) in the protocol stack.

Abstract: In one embodiment, a method in a wireless device (110) for adaptive HARQ retransmissions comprises receiving, from a network node (100), 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: A method is performed by a wireless device for transmitting PDCP packets over a multi-hop path to a receiver, in accordance with particular embodiments. The method begins with receiving PDCP signalling indicating that at least one transmitted PDCP packet has not been received. For example, the PDCP signalling may comprise a PDCP status PDU, or may comprise PDCP data recovery or PDCP re-establishment RRC signalling. In response to receiving the PDCP signalling indicating that at least one transmitted PDCP packet has not been received, the wireless device retransmits the at least one transmitted PDCP packet that has not been received, even if said transmitted PDCP packet has been acknowledged by a lower protocol layer. A method is also performed by a network node in accordance with particular embodiments.

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 (11, 12) determines a set of carriers. The carriers each require a listen-before-talk, LBT, procedure before transmitting on the carrier. Further, the wireless device (11, 12) determines a reliability target for a wireless transmission from the wireless device (11, 12) to the wireless communication network, in particular to an access node (101-1, 101-2, 101-3, 101-4) of the wireless communication network. Depending on the reliability target, the wireless device (11, 12) controls aggregation of carriers from the set for redundantly 10 performing the wireless transmission on the aggregated carriers.