Method and device in UE and base station for transmitting power adjustment
The present disclosure provides a method and a User Equipment (UE) supporting transmission power adjustment. The UE receiving a first signaling; and transmitting a first radio signal; wherein, a first modulation symbol sequence is used to generate the first radio signal, the first modulation symbol sequence employs a target waveform, a first bit block is used to generate the first modulation symbol sequence, the first signaling is used to determine the target waveform out of X waveforms, the X is a positive integer greater than or equal to 2, a transmitting power of the first radio signal is a first power, the target waveform is used to determine an upper bound of the first power. The method can adjust the UE transmitting power according to the waveform of the uplink transmission, thus reducing the power loss of the UE or improving the coverage performance of the uplink transmission.
1 . A method performed by a User Equipment (UE), the method comprising:
receiving a radio resource control (RRC) signaling comprising a default configuration of a target waveform, wherein the RRC signaling is used to determine the target waveform out of a plurality of waveforms, and the target waveform is used to determine an upper bound of a transmitting power of a wireless signal; and
transmitting the wireless signal, wherein the wireless signal is based on a modulation symbol sequence, the modulation symbol sequence is based on an output of a code block after channel encoding, the modulation symbol sequence employs the target waveform, and a modulation scheme of the modulation symbol sequence is quadrature phase shift keying (QPSK);
wherein, the transmitting power of the wireless signal is equal to the lesser of a second power and the upper bound of the transmitting power of the wireless signal, and the second power is related to: a pathloss of the UE, an amount of subcarriers occupied by the wireless signal, a subcarrier spacing of a subcarrier occupied by the wireless signal, and the modulation scheme of the modulation symbol sequence.
2 . The method to of claim 1 , wherein a range of the upper bound of the transmitting power of the wireless signal is related to the target waveform, the upper bound of the transmitting power of the wireless signal is set by the UE itself within the range, and the plurality of waveforms are 2 waveforms: cyclic prefix-orthogonal frequency division multiplexing (CP-OFDM) and discrete Fourier transform-spread-orthogonal frequency division multiplexing (DFT-s-OFDM), respectively.
3 . The method of claim 1 , comprising:
receiving a second signaling;
wherein the second signaling is used to determine a parameter, the parameter is used to determine a lower bound of the upper bound of the transmitting power of the wireless signal, the parameter is related to the target waveform,; and the parameter is maximum power reduction (MPR) or additional maximum power reduction (A-MPR).
4 . The method of claim 3 , wherein;
the parameter is further related to at least one of:
a power class of the UE, a frequency of a carrier where the wireless signal is carried, a type of a receiver of the wireless signal, an amount of subcarriers occupied by the wireless signal, a subcarrier spacing of a subcarrier occupied by the wireless signal, a position of subcarriers occupied by the wireless signal in the frequency domain, or the modulation scheme of the modulation symbol sequence; and
a transmitting power corresponding to the power class of the UE does not comprise a fluctuation range of tolerance.
5 . The method of claim 1 , comprising:
receiving a third signaling;
wherein the third signaling is used to determine at least one of: an amount of subcarriers occupied by the wireless signal, a subcarrier spacing of a subcarrier occupied by wireless signal, a position of subcarriers occupied by the wireless signal in the frequency domain, or the modulation scheme of the modulation symbol sequence; and
wherein the third signaling is a physical layer signaling, the third signaling comprises scheduling information of the wireless signal, the scheduling information comprises at least one of: time-frequency resources occupied, modulation and coding scheme (MCS), redundancy version (RV), new data indicator (NDI), or hybrid automatic repeat request (HARQ) Process Identity Number.
6 . The method of claim 1 , wherein the wireless signal is transmitted within a serving carrier, the transmitting power of the wireless signal is a power of the UE when transmitting the wireless signal within the serving carrier, the subcarrier spacing of the subcarriers occupied by the first radio wireless signal is 3.75kHz times 2 K , and K is an integer greater than 0.
7 . The method of claim 3 , comprising:
receiving a fourth signaling;
wherein a lower bound of the upper bound of the transmitting power of the wireless signal is determined by the following formula:
P CMAX_L,c =MIN{ P A,c , P PowerClass −MAX( X -MPR c , P -MPR c )}
where:
carrier c denotes a serving carrier of the wireless signal;
P CMAX_L,c denotes the lower bound of the upper bound of the transmitting power of the wireless signal in dBm;
P A,c denotes a third parameter in dBm, wherein the third parameter is configured by a network and the fourth signaling is used to determine the third parameter;
P PowerClass denotes a transmitting power in dBm corresponding to a power class of the UE
X-MPR c denotes the parameter in dB; and
P-MPR c denotes a power management maximum power reduction (P-MPR) value in dB.
8 . A user equipment (UE) comprising:
a receiver, configured to receive a radio resource control (RRC) signaling comprising a default configuration of a target waveform, wherein the RRC signaling is used to determine the target waveform out of a plurality of waveforms, and the target waveform is used to determine an upper bound of a transmitting power of a wireless signal; and
a transmitter configured to transmit a wireless signal, wherein the wireless signal is based on a modulation symbol sequence, the modulation symbol sequence is based on an output of a code block after channel encoding, the modulation symbol sequence employs the target waveform, and a modulation scheme of the modulation symbol sequence is quadrature phase shift keying (QPSK);
wherein the transmitting power of the wireless signal is equal to the lesser of a second power and the upper bound of the transmitting power of the wireless signal, and the second power is related to: a pathloss of the UE, an amount of subcarriers occupied by the wireless signal, a subcarrier spacing of a subcarrier occupied by the wireless signal, and the modulation scheme of the modulation symbol sequence.
9 . The UE of claim 8 , wherein a range of the upper bound of the transmitting power of the wireless signal is related to the target waveform, the upper bound of the transmitting power of the wireless signal is set by the UE itself within the range, and the plurality of waveforms are 2 waveforms: cyclic prefix-orthogonal frequency division multiplexing (CP-OFDM) and discrete Fourier transform-spread-orthogonal frequency division multiplexing (DFT-s-OFDM), respectively.
10 . The user equipment according to UE of claim 8 , wherein the receiver is further configured to receive a second signaling;
wherein the second signaling is used to determine a parameter; the parameter is used to determine a lower bound of the upper bound of the transmitting power of the wireless signal, the parameter is related to the target waveform,; the first and the parameter is (maximum power reduction (MPR) or additional maximum power reduction (A-MPR).
11 . The UE of claim 10 , wherein:
the parameter is further related to at least one of:
a power class of the UE, a frequency of a carrier where the wireless signal is carried, a type of a receiver of the wireless signal, an amount of subcarriers occupied by the first wireless signal, a subcarrier spacing of a subcarrier occupied by the first wireless signal, a position of subcarriers occupied by the wireless signal in the frequency domain, or the modulation scheme of the modulation symbol sequence; and
a transmitting power corresponding to the power class of the UE does not comprise a fluctuation range of tolerance.
12 . The user equipment according to UE of claim 8 , wherein the receiver is further configured to receive a third signaling;
wherein the third signaling is used to determine at least one of: an amount of subcarriers occupied by the wireless signal, a subcarrier spacing of a subcarrier occupied by wireless signal, a position of subcarriers occupied by the first wireless signal in the frequency domain, or the modulation scheme of the first modulation symbol sequence; and
wherein the third signaling is a physical layer signaling, the third signaling comprises scheduling information of the wireless signal, the scheduling information comprises at least one of: time-frequency resources occupied, modulation and coding scheme (MCS), redundancy version (RV), new data indicator (NDI), or hybrid automatic repeat request (HARQ) Process Identity Number.
13 . The UE of claim 8 , wherein the wireless signal is transmitted within a a serving carrier, the transmitting power of the wireless signal is a power of the UE when transmitting the first wireless signal within the serving carrier, the subcarrier spacing of the subcarriers occupied by the wireless signal is 3.75kHz times 2 K , and K is an integer greater than 0.
14 . The UE of claim 10 , wherein the receiver is further configured to receive a fourth signaling;
wherein lower bound of the upper bound of the transmitting power of the wireless signal is determined by the following formula:
P CMAX_L,c =MIN{ P A,c , P PowerClass −MAX( X -MPR c , P -MPR c )}
where, carrier c denotes a serving carrier of the wireless signal;
P CMAX_L,c denotes the lower bound of the upper bound of the transmitting power of the wireless signal in dBm;
P A,c denotes a third parameter in dBm, wherein the third parameter is configured by a network and the fourth signaling is used to determine the third parameter;
P PowerClass denotes a transmitting power in dBm corresponding to a power class of the UE
X-MPR c denotes the parameter in dB; and
P-MPR c denotes a power management maximum power reduction (P-MPR) value in dB.
15 . A base station supporting power adjustment, comprising:
a transmitter configured to transmit a radio resource control (RRC) signaling comprising a default configuration of a target waveform, wherein the RRC signaling is used to determine the target waveform out of a plurality of waveforms, and the target waveform is used to determine an upper bound of a transmitting power of a wireless signal; and
a receiver, configured to receive a wireless signal, wherein the wireless signal is based on a modulation symbol sequence, the modulation symbol sequence is based on an output of a code block after channel encoding, the modulation symbol sequence employs the target waveform, and a modulation scheme of the modulation symbol sequence is quadrature phase shift keying (QPSK);
wherein the transmitting power of the wireless signal is equal to the lesser of a second power and the upper bound of the transmitting power of the wireless signal, and the second power is related to: a pathloss of a transmitter of the wireless signal, an amount of subcarriers occupied by the wireless signal, a subcarrier spacing of a subcarrier occupied by the wireless signal, and the modulation scheme of the modulation symbol sequence.
16 . The base station of claim 15 , wherein a range of the upper bound of the transmitting power of the wireless signal is related to the target waveform, an upper bound of the transmitting power of the wireless signal is self-set by a transmitter of the first wireless signal within the range, and of the upper bound of the first power; the plurality of waveforms are 2 waveforms: cyclic prefix-orthogonal frequency division multiplexing (CP-OFDM) and discrete Fourier transform-spread-orthogonal frequency division multiplexing (DFT-s-OFDM), respectively.
17 . The base station of claim 15 , wherein the transmitter is further configured to transmit a second signaling;
wherein the second signaling is used to determine a parameter; the parameter is used to determine a lower bound of the upper bound of the transmitting power of the wireless signal, the parameter is related to the target waveform, and the parameter is (maximum power reduction (MPR) or additional maximum power reduction (A-MPR).
18 . The base station of claim 17 , wherein:
the parameter is further related to at least one of:
a power class of a transmitter of the wireless signal, a frequency of a carrier where the wireless signal is carried, a type of a receiver of the wireless signal, an amount of subcarriers occupied by the wireless signal, a subcarrier spacing of a subcarrier occupied by the wireless signal, a position of subcarriers occupied by the wireless signal in the frequency domain, or the modulation scheme of the modulation symbol sequence; and
a transmitting power corresponding to the power class of the transmitter of the wireless signal does not comprise a fluctuation range of tolerance.
19 . The base station of claim 15 , wherein the transmitter is further configured to transmit a third signaling;
wherein the third signaling is used to determine at least one of; an amount of subcarriers occupied by the wireless signal, a subcarrier spacing of a subcarrier occupied by wireless signal, a position of subcarriers occupied by the first wireless signal in the frequency domain, or the modulation scheme of the first modulation symbol sequence; and
wherein the third signaling is a physical layer signaling, the third signaling comprises scheduling information of the wireless signal, the scheduling information comprises at least one of: time-frequency resources occupied, modulation and coding scheme (MCS), redundancy version (RV), new data indicator (NDI), or hybrid automatic repeat request (HARQ) Process Identity Number.
20 . The base station of claim 15 , wherein the wireless signal is transmitted within a serving carrier, the transmitting power of the wireless signal is a power of a user equipment when the wireless signal is transmitted within the serving carrier, the subcarrier spacing of the subcarriers occupied by the first radio wireless signal is 3.75kHz times 2 K , and K is an integer greater than 0.