Abstract: Apparatuses, methods, and systems are disclosed for sidelink device discovery. One method includes transmitting, at a first sidelink device and over a sidelink interface, a periodic discovery message for performing discovery of at least one second sidelink device. The method includes discovering the at least one second sidelink device over the sidelink interface. The method includes transmitting at least one source layer 2 identifier of the at least one second sidelink device discovered by the first sidelink device to a third wireless device.

Abstract: Apparatuses, methods, and systems are disclosed for indicating source and destination devices. One method includes generating, at a first user equipment, mapping information. The mapping information comprises mapping between a pair of a source identities, an index, and at least one destination identity. The method includes providing the mapping information to a second user equipment. The method includes generating a first data packet including sidelink data for a third user equipment. The method includes transmitting the first data packet from the first user equipment to the second user equipment. The second user equipment generates a second data packet at least based on the mapping information, the second data packet includes sidelink data for the third user equipment, and the second user equipment transmits the second data packet to the third user equipment.

Abstract: Apparatuses, methods, and systems are disclosed for data and feedback relaying. One method includes receiving, by a second sidelink user equipment, a first data packet from a first sidelink user equipment. The method includes receiving a feedback request with the first data packet. The method includes transmitting, by the second sidelink user equipment, the first data packet to at least one third sidelink user equipment. The method includes receiving feedback about a decoding status of the first data packet from the at least one third sidelink user equipment. The method includes determining a result of the feedback request at the second sidelink user equipment based on the feedback. The method includes transmitting the result of the feedback request to the first sidelink user equipment.

Abstract: Apparatuses, methods, and systems are disclosed for control information that schedules or activates multiple transmissions. One method (1200) includes receiving (1202) user equipment specific signaling from a device. The user equipment specific signaling comprises a control information format that dynamically indicates a set of parameters that schedule or activate at least two transmissions between the user equipment and the device; and the at least two transmissions comprise: a first transmission having a first transmission link direction from the user equipment to the device; and a second transmission having a second transmission link direction from the device to the user equipment.

Abstract: Apparatuses, methods, and systems are disclosed for sidelink control information based sensing. One method includes receiving at a first user equipment, a first discontinuous reception configuration. The first discontinuous reception configuration includes a first slot offset, a first on-duration, a first periodicity, or some combination thereof. The method includes receiving an indication to perform sensing in a sensing window. The sensing window includes an active time of the first discontinuous reception configuration. The method includes performing the sensing based on sidelink control information decoding and a reference signal received power measurement of a demodulation reference signal of a second user equipment.

Abstract: Apparatuses, methods, and systems are disclosed for associating a control signaling configuration with a waveform type. One apparatus in a mobile communication network includes a processor and a transceiver that receives a configuration for control signaling. The processor associates a control signaling configuration with a waveform type, where at least two different waveform types are associated with different control signaling configurations. The transceiver receives from a radio access network a control signal transmission using the associated waveform type.

Abstract: Apparatuses, methods, and systems are disclosed for relay advertisement for sidelink operation. One apparatus includes a processor and a transceiver that receives a relay advertisement from a SL Relay UE supporting sidelink operation, where the relay advertisement contains at least one relay attribute. The processor determines that relay via the SL Relay UE is needed using the at least one relay attribute. The transceiver sends a relay connection request to the SL Relay UE and receives a relay connection confirmation from the SL Relay UE. Via the transceiver, the processor performs sidelink communication with a remote receiver device via the SL Relay UE.

Abstract: Apparatuses, methods, and systems are disclosed for improved communications using relay over sidelink radio interface. One apparatus includes a processor and a transceiver that transmits a data packet via a sidelink interface, where the data packet is transmitted to a first UE device and a second UE device. The transceiver receives a first HARQ feedback from the first UE device and receives a second HARQ feedback from the second UE device. Here, the first HARQ feedback indicating a decoding status of the data packet at the first UE device and the second HARQ feedback indicating a decoding status of the data packet at the second UE device. The processor determines to stop transmission of the data packet in response to at least one of the first and second HARQ feedback being a positive acknowledgement.

Abstract: Apparatuses, methods, and systems are disclosed for sidlink discontinuous reception configuration. One method (1000) includes accessing (1002) a sidelink discontinuous reception configuration. The sidelink discontinuous reception configuration corresponds to a quality of service class; an identifier of the quality of service class; at least on attribute of the quality of service class; or some combination thereof. The method (1000) includes performing (1004) sidelink communication based on the sidelink discontinuous reception configuration.

Abstract: Apparatuses, methods, and systems are disclosed for discontinuous reception configuration parameters for communication. One method (1000) includes receiving (1002), at a first user equipment and over a first radio interface, discontinuous reception configuration parameters for communication over a second radio interface. The method (1000) includes receiving (1004) quality of service requirements for transmission over the second radio interface. The method (1000) includes determining (1006) discontinuous reception communication parameters based on the discontinuous reception configuration parameters and based on the quality of service requirements. The method (1000) includes transmitting (1008) and receiving communications over the second radio interface based on the discontinuous reception communication parameters.

Abstract: Apparatuses, methods, and systems are disclosed for restrictions based on a configured numerology. One method (700) includes receiving (702) information from a network indicating a numerology for transmission, reception, or a combination thereof. The method (700) includes determining (704) a physical downlink control channel monitoring restriction, a downlink control information format configuration restriction, a search space configuration restriction, or some combination thereof based on the numerology.

Abstract: Apparatuses, methods, and systems are disclosed for waveform indication using Downlink Control Information (“DCI”). One apparatus in a mobile communication network includes a processor and a transceiver that monitors for DCI outside a Discontinuous Reception (“DRX”) Active Time, where the DCI contains a waveform indicator. The processor determines a waveform type for a next occurring DRX Active Time, and the transceiver receives a downlink transmission on a physical downlink channel during the next occurring DRX Active Time using the determined waveform.

Abstract: Apparatuses, methods, and systems are disclosed for channel occupancy time sharing. One method includes determining channel occupancy time sharing for at least one user equipment. The method includes transmitting information indicating the channel occupancy time sharing to the at least one user equipment. The channel occupancy time sharing indicates sharing information for at least one uplink communication, at least one sidelink communication, or a combination thereof. The method includes receiving the at least one uplink communication, the at least one sidelink communication, or the combination thereof based on the channel occupancy time sharing.

Abstract: Apparatuses, methods, and systems are disclosed for positioning reference signal resource configuration. One method (700) includes receiving (702), at a location server, a discontinuous reception configuration of at least one user equipment. The method (700) includes transmitting (704) a positioning reference signal resource configuration to the at least one user equipment based on the discontinuous reception configuration. The at least one user equipment uses the positioning reference signal resource configuration and the discontinuous reception configuration to perform positioning reference signal measurements.

Abstract: Apparatuses, methods, and systems are disclosed for supporting acknowledgements for DL data transmitted on UL resources. One apparatus in a mobile communication network includes a processor and a transceiver that receives signaling information from a RAN node to schedule a first set of PDSCH resources and a first set of corresponding PUSCH resources, where the information to schedule the first set of PDSCH resources and the first set of PUSCH resources is transmitted in a same slot. The processor determines feedback information for a PDSCH transmission received from the RAN node using the first set of PDSCH resources and controls the transceiver to send feedback information for the PDSCH transmission to the RAN node using the first set of PUSCH resources.

Abstract: Apparatuses, methods, and systems are disclosed for radio resource configuration for power saving. One method includes monitoring, via a first receiver including a wake-up receiver, a sidelink control channel for a WUS. The method includes monitoring, via a second receiver, a physical sidelink control channel and a data channel. The second receiver includes a baseband processing unit separate from the first receiver. The method includes receiving a radio resource configuration for WUS reception. The method includes receiving, outside an active period, the WUS in a resource indicated by the radio resource configuration. The method includes determining to wake-up the second receiver based on the WUS. The WUS includes a wake-up indicator bit, a destination identifier, or a combination thereof.

Abstract: Apparatuses, methods, and systems are disclosed for extracting EtherCAT datagrams from an EtherCAT frame. One method includes receiving an EtherCAT frame. The method includes determining a first EtherCAT datagram in the EtherCAT frame for a first device and a second EtherCAT datagram in the EtherCAT frame for a second device. The method includes extracting the first EtherCAT datagram from the EtherCAT frame to result in an extracted first EtherCAT datagram and the second EtherCAT datagram from the EtherCAT frame to result in an extracted second EtherCAT datagram. The method includes transmitting the extracted first EtherCAT datagram directly to the first device. The method includes transmitting the extracted second EtherCAT datagram directly to the second device.

Abstract: Apparatuses, methods, and systems are disclosed for indication of a request for sidelink resources. One method (500) includes receiving (502) a hybrid automatic repeat request feedback message over a first radio interface. The method (500) includes, in response to determining that the hybrid automatic repeat request feedback message indicates an unsuccessful decoding of a corresponding transport block, transmitting (504) a negative acknowledgment on a physical uplink control channel of a second radio interface. The negative acknowledgment indicates a request for sidelink resources on the first radio interface. The method (500) includes starting (506) a timer in response to transmitting the negative acknowledgment.

Abstract: Apparatuses, methods, and systems are disclosed for consecutive data packet feedback. One method includes receiving a first set of consecutive data packets. The method includes transmitting feedback corresponding to the first set of consecutive data packets, wherein the feedback comprises: an error indication in response each data packet in the first set of consecutive data packets failing to be received correctly; a non-error indication in response to at least one data packet in the first set of consecutive data packets being received correctly; a counter value that indicates a consecutive number of data packet failures; or some combination thereof.

Abstract: Apparatuses, methods, and systems are disclosed for supporting a mixture of BR and HFBT. One apparatus (600) includes a processor (605) that provides a physical (“PHY”) layer (255) and a Medium Access Control (“MAC”) layer (260) and a transceiver (625) that communicates on a sidelink channel. The processor (605) determines (805) a minimum time duration between a first resource for HARQ transmission of the transport block (“TB”) and a second resource for HARQ transmission of the TB. Here, the minimum time duration comprises a sum of: a first time to receive HARQ feedback, a second time to determine whether to perform retransmissions of the TB, and a third time to retransmit the TB. The processor (605) selects (810) a retransmission mode based on the minimum time duration and selects (815) sidelink resources for retransmission of the TB based on the selected retransmission mode.