Abstract: Embodiments of the present disclosure relate to methods and apparatuses of resource selection for sidelink (SL) communication. According to an embodiment of the present disclosure, a user equipment (UE) can include: a processor configured to: obtain a position characteristic configuration associated with a resource pool based on configuration or pre-configuration, wherein the position characteristic configuration includes a set of position characteristics, and each position characteristic indicates an availability level of a position in an SL slot for simultaneous sub-slot level transmission and slot level transmission; and perform a sensing-based resource selection or re-selection based at least in part on the position characteristic configuration; a transmitter coupled to the processor; and a receiver coupled to the processor.

Abstract: Embodiments of the present application are directed to a method and apparatus for beam-based transmission for sidelink. The method may include: detecting spatial information contained in first sensed scheduling information; selecting a resource and a direction of a beam for data transmission based on the detected spatial information; transmitting second scheduling information including the selected resource and spatial information of the beam for the data transmission, where the spatial information of the beam includes the direction of the beam for the data transmission; and transmitting the data transmission by using the selected resource and the direction of the beam.

Abstract: Embodiments of the present disclosure relate to methods and apparatuses for sidelink (SL) transmission on unlicensed spectrum. According to an embodiment of the present disclosure, a user equipment (UE) can include: a processor configured to: determine a listen before talk (LBT) type of a first LBT operation for an SL transmission on an unlicensed spectrum; and perform the first LBT operation; a transmitter coupled to the processor and configured to: transmit first information associated with the first LBT operation in sidelink control information (SCI) when the first LBT operation is successful; and a receiver coupled to the processor.

Abstract: Embodiments of the present application are related to a method and apparatus for resource reservation for 3GPP 5G New Radio (NR) sidelink (SL). A method for wireless communication performed by a user equipment (UE) according to an embodiment of the present application includes: transmitting a code block group (CBG)-based transmission on a SL, wherein the CBG-based transmission includes one or more CBGs; receiving hybrid automatic repeat request-acknowledge (HARQ-ACK) feedback corresponding to the one or more CBGs; and determining, based on contents of the HARQ-ACK feedback, whether there is resource(s) to be released during a CBG-based retransmission.

Abstract: Apparatuses, methods, and systems are disclosed for determining an association between DMRS and PTRS. One apparatus includes a processor that: determines a scheduled physical resource block position and bandwidth; and determines, based on the scheduled physical resource block position and bandwidth, an associated demodulation reference signal port index within the physical resource block for a phase tracking reference signal.

Abstract: The present disclosure relates to methods and apparatuses. According to some embodiments of the disclosure, a method of a first communication device includes: receiving a first connection request from a second communication device, wherein the first connection request may include a first indication indicating that a first logical channel between the first communication device and the second communication device is associated with a third communication device.

Abstract: Embodiments of the present application are related to a method and apparatus for pre-empting a resource of a user equipment (UE) supporting New Radio (NR). A method for sidelink communications performed by a UE according to an embodiment of the present application includes: receiving a sidelink control information (SCI) indicating one or more reserved resources, wherein the SCI explicitly or implicitly indicates a pre-emption indication (PI) resource on physical sidelink feedback channel (PSFCH); determining whether the one or more reserved resources can be pre-empted; upon determining that the one or more reserved resources can be pre-empted, transmitting a PI on the PI resource on the PSFCH to pre-empt the one or more reserved resources; and performing a sidelink transmission on the pre-empted one or more reserved resources.

Abstract: A method at a base station for performing data transmission to a user equipment in a communications system supporting carrier aggregation of at least one first carrier on which a short TTI is applied and at least one second carrier on which a long TTI is applied. The method transmits at least one DL scheduling grant corresponding to data transmission to the user equipment in a DL control region of at least one of a short TTI on a first carrier and a long TTI on a second carrier and performs DL data transmission towards the user equipment in a data transmission region of a short TTI on the first carrier and in the data transmission region of a long TTI on the second carrier as indicated by the at least one DL scheduling grant.

Abstract: Embodiments of the present invention provide method and devices for signaling transmission in unlicensed band. The method comprising determining a signal transmission pattern, which defines time and frequency resources for transmitting at least one signal in a first frequency band; signaling, via a second frequency band, the signal transmission pattern to a first device; and transmitting the at least one signal via the first frequency band, to the first device, according to the signal transmission pattern; wherein a transmission of one of the at least one signal is skipped if time and frequency resource for the transmission defined by the signal transmission pattern is detected as busy. Corresponding methods and devices for receiving a signal which is transmitted using above method are also disclosed.

Abstract: Embodiments of the present disclosure relate to methods and apparatuses for sidelink positioning reference signal (SL-PRS) transmission. According to an embodiment of the present disclosure, a user equipment (UE) can include: a transmitter configured to: transmit sidelink control information (SCI), wherein the SCI indicates a sidelink resource for transmitting a SL-PRS; and transmit the SL-PRS based on the SCI; a receiver, and a processor coupled to the transmitter and the receiver.

Abstract: Embodiments of the present disclosure relate to methods and apparatuses for sidelink (SL) positioning. According to an embodiment of the present disclosure, a first user equipment (UE) can include: a transmitter configured to: transmit a first SL transmission to a plurality of second UEs, wherein the first SL transmission includes at least one of an identity (ID) associated with a number of second UE(s) of the plurality of second UEs or an indicator to enable or disable the plurality of second UEs to perform a condition based determination on whether to transmit a second SL transmission in response to the first SL transmission; and a receiver configured to: receive, from at least one second UE of the plurality of second UEs, at least one second SL transmission in response to the first SL transmission; and a processor coupled to the transmitter and the receiver.

Abstract: The subject application is related to method and apparatus for scheduling a sidelink resource. A method performed by a first user equipment (UE), comprising: determining a reserved resource; transmitting a signal indicating the reserved resource; and if a pre-emption indication is received, releasing the reserved resource to a second UE.

Abstract: Embodiment of the present application is directed to a method and apparatus for slot format indication. According to an embodiment of the present application, the method includes receiving at least one signal indicating one of: whether at least one symbol at a beginning of a sequence of consecutive symbols transmitted or received over a communication link is reserved or is to be reserved, and whether at least one symbol at an end of the sequence of consecutive symbols transmitted or received over the communication link is reserved or is to be reserved. The at least one uplink transmission is performed based on the received signal in response to the communication link being associated with an uplink transmission. The at least one downlink reception is performed based on the received signal in response to the communication link being associated with downlink reception.

Abstract: Methods and apparatuses for a sidelink slot providing more efficient data transmissions in 3GPP (3rd Generation Partnership Project) 5G networks. A UE includes a processor and a wireless transceiver coupled to the processor; and the processor of the UE is configured: to obtain configuration information regarding one or more sidelink slots, wherein each sidelink slot within the one or more sidelink slots includes multiple sets of symbols; and to transmit, via the wireless transceiver over a sidelink of the UE, using the one or more sidelink slots.

Abstract: Embodiments of the present disclosure relate to methods and apparatuses for HARQ-ACK feedback on a sidelink. According to some embodiments of the disclosure, a UE may receive a plurality of PSSCHs; determine whether a TB is transmitted repeatedly on the plurality of PSSCHs; and in response to determining the TB being transmitted repeatedly on the plurality of PSSCHs, generate a single HARQ-ACK information bit for the plurality of PSSCHs, and transmit a PSFCH carrying the single HARQ-ACK information bit according to a HARQ-ACK feedback option for the plurality of PSSCHs.

Abstract: Apparatus and methods of Channel Status Information (CSI) acquisition on sidelink are disclosed. The apparatus includes: a transmitter that transmits a reference signal to a device on a sidelink (SL) transmission; a receiver that receives a channel quality report from the device; and a processor that controls the transmitter and the receiver, and decodes the channel quality report to obtain a channel quality; wherein the processor is configurable to support one or a combination selected from a group consisting of: a reporting activation scheme where an SL Channel Status Information (CSI) reporting activation indicator is configured; and a measurement triggering scheme where the transmitter initiates transmission of the reference signal upon satisfying a triggering condition.

Abstract: Apparatuses, methods, and systems are disclosed for transmitting and/or receiving feedback for sidelink transmissions. One method (1000) includes receiving (1002) information from a network device indicating multiple resources for sidelink transmission and resources for feedback. The method (1000) includes transmitting (1004) sidelink data using the multiple resources for sidelink transmission.

Abstract: Embodiments of the present disclosure relate to methods and apparatuses of resource allocation for sidelink (SL) communication. According to an embodiment of the present disclosure, a base station (BS) can include: a transmitter configured to: transmit a scheduling grant associated with a resource pool to a user equipment (UE), wherein the scheduling grant indicates a first set of resources for a sidelink transmission; and transmit a sidelink pre-emption indication message to the UE, wherein the sidelink pre-emption indication message comprises a sidelink pre-emption indicator (SL-PI) indicating that at least one second set of resources of the first set of resources is pre-empted, wherein each second set of resources is represented by a pair of sub-slot(s) and sub-channel(s).

Abstract: A method at a base station for performing data transmission to a user equipment in a communications system supporting carrier aggregation of at least one first carrier on which a short TTI is applied and at least one second carrier on which a long TTI is applied. The method transmits at least one DL scheduling grant corresponding to data transmission to the user equipment in a DL control region of at least one of a short TTI on a first carrier and a long TTI on a second carrier and performs DL data transmission towards the user equipment in a data transmission region of a short TTI on the first carrier and in the data transmission region of a long TTI on the second carrier as indicated by the at least one DL scheduling grant.

Abstract: Methods and apparatuses for resource selection of sidelink CA are disclosed. A method of a user equipment (UE) comprises: excluding, from a candidate resource set for a first carrier, resources based on reception of Physical Sidelink Feedback Channel (PSFCH) resource(s) on the first carrier or on a second carrier and transmission of selected resource(s) on the second carrier; and selecting, from the candidate resource set in which the resources are excluded at least based on reception of PSFCH resource(s) on the first carrier or on the second carrier and transmission of selected resource(s) on the second carrier, resources on the first carrier for transmission.