Abstract: It is provided a method comprising: indicating that a HARQ process is initiated for transmitting at least a first HARQ message comprising an inquiry as the first message of the HARQ process, wherein the inquiry inquires whether a relay terminal for relaying a communication of a transmitting terminal is available; transmitting the first HARQ message using the HARQ process; monitoring whether a HARQ feedback is received from at least one relay terminal in response to the first HARQ message according to the HARQ process; deciding that the at least one relay terminal is available if the HARQ feedback is received from the at least one relay terminal; deciding that the at least one relay terminal is not available if the HARQ feedback is not received from the at least one relay terminal.

Abstract: A communication apparatus for facilitating setting up of a network slice for service provision in a time division duplex system includes a receiver configured to receive a request for a network slice for at least one service. A processor is configured to specify, for the requested network slice, at least one of an uplink/downlink (UL/DL) configuration and a reconfiguration timescale. A transmitter is configured to notify at least one of a communication entity of a radio access network and a communication entity of a core network of the UL/DL configuration.

Abstract: A method, including: transmitting, by a first terminal device, a first request to a second terminal device, via a sidelink interface, using a first sidelink communication, wherein the second terminal device is configured to serve the first terminal device as a relay terminal device, the first request indicating that a sidelink multipath operation associated with at least one further, third, terminal device should be activated for the first terminal device, and receiving, by the first terminal device, a first response to the first request from the second terminal device.

Abstract: A method may include initiating, by a transmitter user equipment, a hybrid automatic repeat request process for groupcasting a transport block over seedbank to one or more relay user equipment and at least one remote user equipment. The method may also include performing a first groupcast transmission of the transport block using the hybrid repeat request process. The method may further include monitoring feedback from the one or more relay user equipment and the at least one remote user equipment at a first time instance and at a second time instance. In addition, the method may include generating a retransmission strategy of the transport block depending on the feedback monitored at the first time instance and the second time instance. Further, the method may include controlling retransmission of the transport block using the hybrid automatic repeat request process based on the retransmission strategy.

Abstract: An arrangement for role management in relay communication is disclosed. In relay communication, one user equipment relays communication between a base station and at least one remote user equipment. Initially, the relay user equipment has a better signal to a base station. When the signal changes, a better signal channel may be achieved by switching roles between a relay user equipment and a remote user equipment. This includes detecting that a better signal exists and determining that a change would provide a better signal.

Abstract: In one embodiment, the method includes obtaining virtual relay context information enabling by one or more relay mobile device candidates to relay traffic; and applying the virtual relay context information to be configured as a respective relay mobile device of the one or more relay mobile device candidates for relaying traffic.

Abstract: Various example embodiments relate to providing feedback with an adaptive acknowledgement mode. A device may transmit an allocation of transmission resource(s) associated with a second acknowledgement mode. The second acknowledgement mode may include transmission of a positive acknowledgement and a negative acknowledgement. Another device may detect a condition to switch to a first acknowledgement mode including transmission of the negative acknowledgement and not transmission of the positive acknowledgement. The other device may transmit an indication of a switch to the first acknowledgement mode. Apparatuses, methods, and computer programs are disclosed.

Abstract: Embodiments provide a transceiver of a wireless communication network, wherein the transceiver is configured to evacuate/empty/puncture/shorten a downlink transmission of a control information to accommodate an uplink transmission of another transmitter within the downlink transmission.

Abstract: Inter-alia, a method is disclosed comprising: determining a suitability to serve as a relay device for a relayed communication between a first device and a second device via one or more relay devices to be selected among one or more relay device candidates; transmitting a message as part of a relay discovery procedure, and with the apparatus acting as one of the one or more relay device candidates; and performing at least one of a transmit power adjustment and/or a radio resource selection for transmitting the message based, at least in part, on the determined suitability.

Abstract: An ARQ system for sidelink communication between transmitter and receiver, with the help of cooperative UE, or relay UE is disclosed. The relay intercepts the initial transmission from transmitter to receiver. If the relay does not intercept any ARQ feedback from the receiver (DTX), it retransmits the initial transmission. Upon receiving at least the Sidelink Control Information, SCI, identifying the retransmission, the transmitter terminates the HARQ process, assuming that the relay is now in charge of the retransmission. Upon reception of the retransmission, the receiver feeds back an HARQ ACK to the relay and the transmitter. If the receiver correctly receives the initial transmission, it feeds back an HARQ ACK to the relay and the transmitter and both relay and transmitter stop the HARQ process. If the relay does not successfully receive the initial transmission, it feds back a NACK to the transmitter which performs retransmission to the relay.

Abstract: A mobile equipment comprising means for: determining to attempt to create a unicast sidelink communication channel between the mobile equipment and an identified target user equipment via a relay user equipment; and sending a relay request message to at least one user equipment, operable as a relay to the target user equipment, wherein the relay request message comprises at least some information for configuring a sidelink process to obtain feedback from the target user equipment.

Abstract: Systems, methods, apparatuses, and computer program products for logical channel selection for non-discontinuous reception (non-DRX) enabled devices. A method may include determining a sidelink discontinuous reception state of at least one receiving user equipment. The method may also include examining one or more conditions associated with the at least one receiving user equipment. The method may further include selecting at least one sidelink destination related to a logical channel among the at least one receiving user equipment based on the determined sidelink discontinuous reception state and the examination.

Abstract: There are disclosed techniques for puncturing and/or overlaying transmission in case of necessity of on-demand (e.g., urgent) commutations. In particular, transceivers, user equipments, systems, methods and non-transitory storage units are disclosed. For example, there is disclosed a transceiver of a wireless communication network, wherein the transceiver is configured to operate in a puncturing mode by puncturing a downlink, DL, transmission of payload information in a channel originally allocated to the DL transmission of payload information, to obtain, within the originally allocated channel for the DL transmission of payload information, a DL free area for an uplink, UL, transmission of a user equipment, UE, of the wireless communication network.

Abstract: Examples refer to communication networks between user equipment, UEs, and a base station BS. Examples refer to communication devices, such as UE(s) and/or BS(s). Full duplexing communications, FDC, may be used to reduce interferences between different UEs.

Abstract: Examples refer to communication networks between user equipment, UEs, and a base station BS. Examples refer to communication devices, such as UE(s) and/or BS(s). Full duplexing communications, FDC, may be used to reduce interferences between different UEs.

Abstract: The present invention provides apparatuses, methods, systems, computer programs, computer program products and computer-readable media for reducing overhead for Quality-of-service (QoS) monitoring of vehicle-to-everything (V2X) services. The method comprises receiving, at a user equipment, from a serving network, a request for a Quality-of-Service (QoS) monitoring session, making a first determination, at the user equipment, whether the user equipment is relevant for the request, based on the content of the request, making a second determination, at the user equipment, if it is determined in the first determination that the user equipment is relevant, whether the request is received in dedicated signaling or common signaling, deciding, at the user equipment, whether or not to initiate the requested QoS monitoring session based on the second determination.

Abstract: A physical sidelink feedback channel custom indication may be defined to indicate a half-duplex collision between one or more sidelink UE to a transmitting UE involved in the collision. In response to the indication, the transmitting UE may not retransmit the packet involved in the collision, and may stay awake for an extended period of time. A receiving UE that identified the collision and transmitted the indication may retransmit the packets involved in the collision to the transmitting UEs that have not yet received the respective packets.

Abstract: For a UE in a wireless network and able to communicate via sidelink communications with other UE(s), the UE determines whether a specific condition exists indicating the UE has limited availability of CG resources used to communicate for the sidelink communications. The UE sends, using the sidelink communications, a message indicating the limited availability of the CG resources toward the other UE(s). Another UE receives the message indicating a limited availability of CG resources for the UE, and prepares an application in the other UE for a less sensitive mode of operation having less QoS than a mode having a normal QoS. A base station can configure the UE with the CG resources and provide a set of parameters to the UE to be used to form the message for the user equipment to transmit to the other UE(s) using sidelink communications.

Abstract: There are provided measures for enabling/realizing flexible and adaptive QoS monitoring for unicast/groupcast over sidelink communication, which may preferably be capable of enhancing support of unicast/groupcast services over sidelink communication. Such measures exemplarily comprise obtaining a request for QoS monitoring for unicast/groupcast over sidelink communication with a specified quality-of-service profile, which indicates at least one target QoS metric to be monitored, determining a QoS monitoring procedure, wherein a scheme for enforcing QoS monitoring over sidelink communication in collaboration with at least one unicast/groupcast receiving-side device is decided, and performing the QoS monitoring procedure, wherein QoS monitoring messages are exchanged with the at least one unicast/groupcast receiving-side device over the sidelink communication with the specified QoS profile in accordance with the decided scheme and the at least one target quality-of-service metric is derived based thereon.

Abstract: Embodiments of the present disclosure relate to devices, methods, apparatuses and computer readable storage media of a proactive switch of vehicle-to-everything communication from a device-to-device connection to a connection routed by one or more network devices. In example embodiments, a first terminal device receives, from a second terminal device via a device-to-device connection, an indication of a decision to switch the device-to-device connection to a connection routed by at least one network device for communication with the second terminal device. Based on the received indication from the second terminal device, the first terminal device then determines proactive switching from the device-to-device connection to the routed connection to be performed. The first terminal device then sends a request to a first network device of the at least one network device to set up the routed connection, the request indicating a cause for the determined proactive switching.