A user equipment, UE, in a vehicle-to-everything, V2X, communication system, according to a sidelink technology developed under the third generation partnership project, 3GPP, new radio, NR, said 3GPP NR defining the parameters Buffer Status Report, BSR, and UE assistance Information, UEAI for the UE, the UE comprising: a memory; a transceiver; and a processor coupled to the memory and the transceiver, wherein the processor is configured to: control the transceiver to receive at least one network V2X configuration information relating at least one V2X operation from a base station, BS,; generate at least one V2X data, wherein the at least one network V2X configuration information comprises at least one set of configured-grant type 1 resources on an uplink, UL, interface; wherein the at least one set of configured-grant type 1 resources comprises at least one of: a periodicity equal to a target latency requirement of a V2X data traffic, a plurality of resources within a period length for data transport block, TB, repetition, a configured modulation and coding scheme, MCS, level corresponding to a transmission, Tx, profile of a V2X service or data traffic, or a demodulation reference signal, DMRS, pattern or initial scrambling sequence corresponding to an intended type of transmission or destination or an NR interface for carrying at least one V2X data message; and trigger the transceiver to send, to the BS, at least one UE assistance information, UEAI, using the at least one network V2X configuration information as a scheduling request indication, SRI, and the transceiver is configured to send, to the BS, the at least one UEAI using the at least one set of configured-grant type 1 resources, wherein the transceiver is configured to receive dynamic-grant downlink control information, DCI, in a physical downlink control channel, PDCCH, assigning at least one sidelink, SL, resource and/or at least one uplink, UL, resource from the BS, and the transceiver is configured to transmit, to another UE, the at least one V2X data message using the at least one assigned SL resource and/or the at least one assigned UL resource. a memory; a transceiver; and a processor coupled to the memory and the transceiver, wherein the processor is configured to: control the transceiver to receive at least one network V2X configuration information relating at least one V2X operation from a base station, BS,; generate at least one V2X data, wherein the at least one network V2X configuration information comprises at least one set of configured-grant type 1 resources on an uplink, UL, interface; wherein the at least one set of configured-grant type 1 resources comprises at least one of: a periodicity equal to a target latency requirement of a V2X data traffic, a plurality of resources within a period length for data transport block, TB, repetition, a configured modulation and coding scheme, MCS, level corresponding to a transmission, Tx, profile of a V2X service or data traffic, or a demodulation reference signal, DMRS, pattern or initial scrambling sequence corresponding to an intended type of transmission or destination or an NR interface for carrying at least one V2X data message; and trigger the transceiver to send, to the BS, at least one UE assistance information, UEAI, using the at least one network V2X configuration information as a scheduling request indication, SRI, and the transceiver is configured to send, to the BS, the at least one UEAI using the at least one set of configured-grant type 1 resources, wherein the transceiver is configured to receive dynamic-grant downlink control information, DCI, in a physical downlink control channel, PDCCH, assigning at least one sidelink, SL, resource and/or at least one uplink, UL, resource from the BS, and the transceiver is configured to transmit, to another UE, the at least one V2X data message using the at least one assigned SL resource and/or the at least one assigned UL resource. control the transceiver to receive at least one network V2X configuration information relating at least one V2X operation from a base station, BS,; generate at least one V2X data, wherein the at least one network V2X configuration information comprises at least one set of configured-grant type 1 resources on an uplink, UL, interface; wherein the at least one set of configured-grant type 1 resources comprises at least one of: a periodicity equal to a target latency requirement of a V2X data traffic, a plurality of resources within a period length for data transport block, TB, repetition, a configured modulation and coding scheme, MCS, level corresponding to a transmission, Tx, profile of a V2X service or data traffic, or a demodulation reference signal, DMRS, pattern or initial scrambling sequence corresponding to an intended type of transmission or destination or an NR interface for carrying at least one V2X data message; and trigger the transceiver to send, to the BS, at least one UE assistance information, UEAI, using the at least one network V2X configuration information as a scheduling request indication, SRI, and the transceiver is configured to send, to the BS, the at least one UEAI using the at least one set of configured-grant type 1 resources, wherein the transceiver is configured to receive dynamic-grant downlink control information, DCI, in a physical downlink control channel, PDCCH, assigning at least one sidelink, SL, resource and/or at least one uplink, UL, resource from the BS, and the transceiver is configured to transmit, to another UE, the at least one V2X data message using the at least one assigned SL resource and/or the at least one assigned UL resource.