Abstract: A method and user equipment are provided for sharing radio resource information. The method includes receiving first sidelink control information (SCI) at a first radio access technology (RAT) module, wherein the first RAT module is configured to implement a first RAT. At least one first radio resource is determined based on the first SCI. First information associated with the first SCI is transmitted to a second RAT module, wherein the second RAT module is configured to implement a second RAT, the second RAT being different from the first RAT. Second SCI is received at the first RAT module. At least one second radio resource is determined based on the second SCI. Whether to transmit second information associated with the second SCI to the second RAT module is determined based on at least whether the determined at least one first radio resource matches the determined at least one second radio resource.

Abstract: Example embodiments of the present disclosure relate to terminal devices, methods, apparatuses and a computer readable storage medium for channel occupancy time sharing for sidelink transmission. The first terminal device initiates a COT by performing an LBT procedure associated with a CAPC; transmits, to multiple terminal devices, an indication of the COT for an SL transmission among the multiple terminal devices; and detects the SL transmission during the COT. As such, the first terminal device may be aware of the information of the SL transmission (s) during the COT, and for example, the information may be used for adjusting the CW. As a result, the communication efficiency of SL transmission may be improved.

Abstract: Disclosed are methods, apparatuses, and systems for resource selection in a sidelink communication. One of the methods includes: obtaining, by a first user equipment (UE) in the sidelink communication, resource reservation information of at least one of the first UE or a second UE, and at least one of: future beam information of at least one of the first UE or the second UE, or future location information of at least one of the first UE or the second UE; and transmitting, to one or more other UEs in the sidelink communication including the second UE, the resource reservation information of at least one of the first UE or the second UE, and the at least one of: the future beam information of at least one of the first UE or the second UE, or the future location information of at least one of the first UE or the second UE.

Abstract: Certain examples of the present disclosure relate to an apparatus, method and computer program for determining channel access priority. Certain examples provide apparatus (10) comprising: means (11) for determining information indicative of a channel access priority (p) for a physical sidelink feedback channel, PSFCH, transmission (205) based at least in part on: information indicative of at least one status of a last at least one PSFCH transmission (204); or information indicative of a cast type of a sidelink, SL, transmission (202) that is associated with the PSFCH transmission (205).

Abstract: An apparatus configured to: determine to perform an opportunistic reception beam alignment procedure; receive, from a first user equipment, an indication of a type of beamforming the first user equipment applies; determine to use at least one transmission of the first user equipment for the opportunistic reception beam alignment procedure based, at least partially, on one or more predefined conditions; perform the opportunistic reception beam alignment procedure based on at least part of a transmission of the first user equipment intended for, at least, at least one second user equipment; and transmit, to the first user equipment, an indication that a valid reception beam is determined with respect to the first user equipment, wherein the valid reception beam is determined as a result of the opportunistic reception beam alignment procedure.

Abstract: Systems, methods, apparatuses, and computer program products for reservation of sidelink (SL) positioning reference signal (PRS) resources for user equipment (UEs). A method may include determining to reserve, for a user equipment, at least one resource for a sidelink positioning transmission from the user equipment. The method may also include transmitting sidelink control information, to the user equipment, including information of the at least one resource reservation for the user equipment. The method may further include receiving a feedback message, from the user equipment, indicating whether the at least one resource reservation is accepted or rejected.

Abstract: Disclosed is a method comprising determining whether one or more physical sidelink feedback channel symbols are allocated in at least one time slot; and transmitting, based on the determination, a signal on one or more co-channel resources in the at least one time slot.

Abstract: Disclosed are methods, apparatuses, and systems for sidelink carrier aggregation. The methods include: transmitting one or more packets on one or more carriers of a plurality of carriers that are to be used for a sidelink carrier aggregation; determining at least one of: reception of an acknowledgment (ACK) from each of one or more target receiver user equipment (UEs), or non-reception of a negative acknowledgement (NACK) on at least one of the one or more carriers of the plurality of carriers; and canceling one or more remaining transmissions or re-transmissions for the one or more packets scheduled on the one or more carriers of the plurality of carriers, in response to a determination of at least one of: reception of the ACK from at least one of the one or more target receiver UEs, or non-reception of the NACK on the at least one of the one or more carriers of the plurality of carriers.

Abstract: In one embodiment, the user equipment performs generating a coordination request for information on resources for use for direct inter user equipment transmissions, the coordination request including an indication of a preference for resources for receiving a coordination response; monitoring for coordination requests made by at least one other user equipment; generating the resource preference indication in dependence upon at least one preference indication from at least one of the monitored coordination requests.

Abstract: An apparatus and computer program are disclosed. The apparatus has at least one processor and at least one memory including computer program code. The at least one memory and computer program code being configured to, with the at least one processor, cause the apparatus to receive a plurality of coordination requests from a plurality of user equipment. The coordination requests include a request for information on resources for use for direct inter-user equipment transmissions and include an indication of a preference of resources for receiving a coordination response.

Abstract: Disclosed is a method comprising transmitting, to one or more user devices, a message comprising a first reference signal and a first set of masks; receiving, from the one or more user devices, at least one of the following: first masked channel information per mask of the first set of masks, or a preferred sidelink positioning reference signal configuration based on the first masked channel information; and determining a first sidelink positioning reference signal configuration based at least partly on the first masked channel information or the preferred sidelink positioning reference signal configuration.

Abstract: An apparatus comprising: at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to: determine a first allocation comprising at least one of: a first time-domain allocation comprising at least one symbol within a slot associated with a first reference signal transmission, or a first frequency-domain allocation comprising at least one subcarrier within a physical resource block associated with the first reference signal transmission, or a first code-domain allocation comprising a sequence associated with the first reference signal transmission, or a first space-domain allocation comprising a beam associated with the first reference signal transmission; and determine a physical sidelink feedback channel transmission resource for a physical sidelink feedback channel transmission in response to the first reference signal transmission at least based on the determined first allocation.

Abstract: Apparatus and method for inter-UE coordination in groupcast transmissions are provided. Solution comprises communicating (400) with a group of apparatuses in a group communication utilising sidelink transmission, where the group of apparatuses comprises a second apparatus configured to coordinate resource allocation for the group communication and at least one other first apparatus; transmitting (402), utilising a designated hybrid automatic repeat request process, an inter-UE coordination request. Positive or negative hybrid automatic repeat request acknowledgements are received (404) from the group of apparatuses in response to transmitting the inter-UE coordination request and monitoring of inter-UE coordination requests of the at least one other first apparatus are monitored (406) based on the received acknowledgements from the at least one other first apparatus.

Abstract: Systems, methods, apparatuses, and computer program products for support for sidelink user equipment in co-channel coexistence environments are provided. For example, a method can include configuring a user equipment with a shared resource pool and a sub-resource-pool comprising resources of at least one selected subframe of the shared resource pool for sidelink transmissions according to a first radio access technology in a co-channel coexistence with sidelink transmissions according to a second radio access technology. The method can also include configuring the user equipment with a network configuration for adaptation and use of the sub-resource-pool depending on type of the user equipment.

Abstract: There is provided a method comprising transmitting from a user equipment information about sidelink synchronization of the user equipment; and transmitting from the user equipment information about reduced reception of sidelink synchronization signals at the user equipment.

Abstract: A method includes causing or detecting, by a user device that is a member of a sidelink group of user devices, a sidelink-related event that triggers an operation associated with the sidelink-related event and specific to the sidelink group; and transmitting a notification of the sidelink-related event via a sidelink group-specific resource, in order to synchronize, among user devices of the sidelink group including any user device of the sidelink group that failed to detect the sidelink-related event, the performing by the user devices of the sidelink group of the operation associated with the sidelink-related event and specific to the sidelink group.

Abstract: Disclosed are methods, apparatuses, and systems for beam management for a user equipment (UE) in a sidelink communication. The method includes: establishing, by a first UE, a beam alignment with a second UE using a first beam; receiving a second-beam assistance indication, the second-beam assistance indication indicating at least one of time information or frequency information associated with a second beam for the second UE; transmitting a second-beam configuration; receiving a confirmation of the second-beam configuration; determining whether a selection of a resource is triggered, the selection of resource being associated with use of the second beam; in response to a determination that the selection of the resource is triggered, updating a candidate resource set and selecting one or more resources from an updated candidate resource set; and transmitting one or more signals or messages using the one or more resources selected from the updated candidate resource set.

Abstract: Example embodiments of the present disclosure relate to a terminal device, a network device, methods, apparatuses and a computer readable storage medium for a mapping of sub-channels and PRBs. A terminal device may determine a number of remaining PRBs after a mapping between multiple sub-channels and a resource pool or a physical resource set, or applying a guard band; and the terminal device may further adjust the mapping based on the number of remaining PRBs. In one illustrated example, one of the multiple sub-channels may be extended by the number of remaining PRBs. In another illustrated example, a further sub-channel may be mapped with the remaining PRBs. As such, the remaining PRBs may be used for sidelink transmission and the spectrum efficiency may be improved.

Abstract: According to an example aspect of the present invention, there is provided an apparatus caused at least to determine a common automatic gain control symbol to be transmitted during a first symbol of a slot, wherein the first symbol of the slot is for a transmission of a first automatic gain control symbol by a transmitting sidelink user equipment and for a transmission of a second automatic gain control symbol by a receiving sidelink user equipment and the apparatus is the transmitting sidelink user equipment, wherein the common automatic gain control symbol comprises the first automatic gain control symbol and the second automatic gain control symbol and transmit the first automatic gain control symbol during the first symbol of the slot.

Abstract: According to an example aspect of the present invention, there is provided a user equipment comprising at least one processing core and at least one memory storing instructions that, when executed by the at least one processing core, cause the user equipment at least to measure a received signal strength of a unicast transmission received in the user equipment from another user equipment, UE, over a direct UE-to-UE radio link, obtain at least one power adjustment parameter concerning the other UE, and include in a report to a base station node, or a further user equipment, UE, either: the measured received signal strength as modified with the at least one power adjustment parameter, or both the measured received signal strength and the at least one power adjustment parameter.