A user equipment, UE, comprising: a transceiver to transmit a signal and to receive a signal; and a processor to control the transceiver, wherein the processor is configured to acquire a network signal, NS, 52, wherein the processor is configured to determine additional maximum power reduction, A-MPR, based on the NS 52, wherein the processor is configured to determine transmission power for a sidelink signal, based on the A-MPR, wherein the transceiver is configured to transmit the sidelink signal with the transmission power, to another UE, wherein the sidelink signal is transmitted through Physical Sidelink Shared Channel, PSSCH, or Physical Sidelink Control Channel, PSCCH, wherein the sidelink signal is transmitted through a band having a center frequency of 5885 MHz and a bandwidth of 40 MHz, wherein the sidelink signal is transmitted through allocated resource blocks, RBs, which belongs to one among region 1, region 2 and region 3, wherein the sidelink signal is transmitted by using modulation type, which is one among quadrature phase shift keying, QPSK, 16quadrature amplitude modulation, 16QAM, 64QAM and 256QAM, wherein the A-MPR is determined based on the allocated RBs and the modulation type, wherein the A-MPR is 8 dB or less, based on the modulation type being the QPSK and the allocated RBs belonging to the region 2, wherein the region 1 includes i) RBs whose RB index number of RBs is floor (N RB * 0.2) or less and ii) RBs whose number of RBs is bigger than N RB -floor (N RB * 0.2) or more, wherein the region 3 includes RBs whose number of RBs is i) greater than or equal to floor (N RB /3.5) and ii) less than or equal to N RB -floor (N RB /3.5)-L CRB, wherein the L CRB is ceil (N RB /3.5) or less, wherein the region 2 includes RBs that do not correspond to the region 1 or the region 3 among the N RB RBs, wherein the floor(x) is the greatest integer less than or equal to the x, wherein the ceil(y) is the smallest integer greater than or equal to the y. a transceiver to transmit a signal and to receive a signal; and a processor to control the transceiver, wherein the processor is configured to acquire a network signal, NS, 52, wherein the processor is configured to determine additional maximum power reduction, A-MPR, based on the NS 52, wherein the processor is configured to determine transmission power for a sidelink signal, based on the A-MPR, wherein the transceiver is configured to transmit the sidelink signal with the transmission power, to another UE, wherein the sidelink signal is transmitted through Physical Sidelink Shared Channel, PSSCH, or Physical Sidelink Control Channel, PSCCH, wherein the sidelink signal is transmitted through a band having a center frequency of 5885 MHz and a bandwidth of 40 MHz, wherein the sidelink signal is transmitted through allocated resource blocks, RBs, which belongs to one among region 1, region 2 and region 3, wherein the sidelink signal is transmitted by using modulation type, which is one among quadrature phase shift keying, QPSK, 16quadrature amplitude modulation, 16QAM, 64QAM and 256QAM, wherein the A-MPR is determined based on the allocated RBs and the modulation type, wherein the A-MPR is 8 dB or less, based on the modulation type being the QPSK and the allocated RBs belonging to the region 2, wherein the region 1 includes i) RBs whose RB index number of RBs is floor (N RB * 0.2) or less and ii) RBs whose number of RBs is bigger than N RB -floor (N RB * 0.2) or more, wherein the region 3 includes RBs whose number of RBs is i) greater than or equal to floor (N RB /3.5) and ii) less than or equal to N RB -floor (N RB /3.5)-L CRB, wherein the L CRB is ceil (N RB /3.5) or less, wherein the region 2 includes RBs that do not correspond to the region 1 or the region 3 among the N RB RBs, wherein the floor(x) is the greatest integer less than or equal to the x, wherein the ceil(y) is the smallest integer greater than or equal to the y.