According to various embodiments, disclosed are a method by which a terminal simultaneously transmits messages in at least two carriers in a wireless communication system supporting device to device (D2D) communication, and an apparatus therefor. Particularly, disclosed are a method by which a terminal simultaneously transmits messages in at least two carriers, and an apparatus therefor, the method comprising the steps of: independently sensing, by a carrier, a transmission resource, and calculating the ratio of transmission resources, which can be simultaneously transmitted on at least two carriers, on the basis of a result of the sensing by the carrier; setting the sensed transmittable transmission resource as a transmission candidate resource when the calculated transmission resource ratio is greater than or equal to a preset threshold ratio; and selecting a transmission resource to be used for the message transmission in each of at least two carriers within the transmission candidate resource.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may have a capability to support a number of temporally overlapping sidelink transmissions. The network may transmit first and second signaling that schedule temporally overlapping first and second sidelink transmissions based on first and second configured grants. The UE may transmit at least one of the first or second sidelink transmissions based on whether the first sidelink transmission and the second sidelink transmission are associated with a same beam or different beams and a frequency relationship between the first and second sidelink transmissions. If the UE is not capable of transmitting the first and second sidelink transmissions concurrently, the UE may transmit the sidelink transmission associated with the higher priority. The first and second sidelink transmissions may be scheduled with overlapping frequency resources. The UE may resolve the frequency overlap by reallocating the overlapping frequency resources.

A method for scheduling transmissions between a controller node, one or more, and one or more uplink nodes comprising: defining one or more non-overlapping downlink and uplink timeslots within a maximum cycle time period; scheduling each of the downlink nodes to listen to receive a respective downlink transmission from a one or multiple radios of the controller node in one of the downlink timeslots on one of a plurality of channels such that none of the downlink transmissions conflict with each other; and scheduling each of the uplink nodes to transmit a respective uplink transmission to a controller radio in one of the uplink timeslots on one of the channels such that none of the uplink transmissions conflict with each other. Each of the downlink nodes is scheduled to listen on a same channel as another if it is possible to do so without any of the respective downlink transmissions conflicting; and each of the uplink nodes is scheduled to transmit on a same channel as another if it is possible to do so without any of the respective uplink transmissions conflicting.

Provided are a communication control device, a communication control method, a communication device, and a communication method capable of changing priority of radio wave use.

A communication control device according to the present disclosure includes: an acquirer configured to acquire application data for changing a priority of radio wave use of a communication device from a second priority lower than a first priority to the first priority on the basis of a right to perform radio wave use with the first priority; a receiver configured to receive a frequency use notification notifying that the communication device is performing the radio wave use with the second priority; and a processor configured to update the priority of the radio wave use by the communication device from the second priority to the first priority in a case where the frequency use notification is received after the application data is acquired.

Aspects of the present disclosure provide apparatus, methods, processing systems, and computer readable mediums for performing rate matching for a physical downlink shared channel (PDSCH). An example method generally includes monitoring for at least first and second downlink control information (DCI) formats for scheduling a physical downlink shared channel (PDSCH), determining a bitwidth of a rate matching indicator field of at least one of the first DCI format or the second DCI format, and performing PDSCH rate matching for a PDSCH scheduled by a DCI of the first or second DCI format based, at least in part, on the rate matching indicator field in the DCI or a format of the DCI.

A terminal according to an aspect of the present disclosure includes a receiving section that receives downlink control information including information related to a resource for which an UL transmission is canceled, and a control section that performs control to first apply one of first UL transmission control and second UL transmission control and then apply the other when a plurality of UL transmissions that overlap in a time domain are scheduled or configured and at least one of the plurality of UL transmissions uses the resource for which the UL transmission is canceled, the first UL transmission control being based on a priority of each UL transmission, the second UL transmission control being based on information related to the resource for which the UL transmission is canceled.

A terminal according to an aspect of the present disclosure includes a receiving section that receives downlink control information including information related to a resource for which an UL transmission is canceled, and a control section that performs control to first apply one of first UL transmission control and second UL transmission control and then apply the other when a plurality of UL transmissions that overlap in a time domain are scheduled or configured and at least one of the plurality of UL transmissions uses the resource for which the UL transmission is canceled, the first UL transmission control being based on a priority of each UL transmission, the second UL transmission control being based on information related to the resource for which the UL transmission is canceled.

Methods, systems, and devices for wireless communications are described. In some wireless communications systems, a user equipment (UE) may be configured to transmit data to a network device using an unencoded signal that includes parameters for updating a local data model. The UE may receive a radio network temporary identifier (RNTI) to decode a resource allocation message that schedules uplink resources for the transmission of the parameters, where the RNTI may be a dedicated RNTI that is different from other RNTIs received by the UE. The UE may identify allocated resources as scheduled by the resource allocation message, and may apply analog modulation and pre-equalization parameters to a data block to form an unencoded uplink transmission that includes the model parameters. The UE may transmit the unencoded uplink message in accordance with an over-the-air computation procedure.

Methods, systems, and devices for wireless communications are described. In some wireless communications systems, a user equipment (UE) may be configured to transmit data to a network device using an unencoded signal that includes parameters for updating a local data model. The UE may receive a radio network temporary identifier (RNTI) to decode a resource allocation message that schedules uplink resources for the transmission of the parameters, where the RNTI may be a dedicated RNTI that is different from other RNTIs received by the UE. The UE may identify allocated resources as scheduled by the resource allocation message, and may apply analog modulation and pre-equalization parameters to a data block to form an unencoded uplink transmission that includes the model parameters. The UE may transmit the unencoded uplink message in accordance with an over-the-air computation procedure.

Embodiments of the present application provide a method for determining a resource set and a terminal device, which can avoid problems such as a hidden node, half-duplex and the like occurring in resource selection, thereby improving reliability of the resource selection. The method for determining a resource set includes: determining, by a first terminal device, a target resource set; sending, by the first terminal device, the target resource set to a second terminal device, or sending, by the first terminal device, first indication information to a second terminal device according to the target resource set; where the target resource set is used for the second terminal device to determine a candidate transmission resource, and the first indication information is used for indicating the second terminal device to perform resource reselection.