Method and device in UE and base station used for wireless communication

A method in a base station for wireless communication, comprising:

• transmitting a first signaling;
• and
• receiving a first radio signal;
• wherein the first signaling is used for determining K REs, K first-type complex numbers are respectively mapped onto the K REs, the K first-type complex numbers are used for generating a baseband signal of the first radio signal through a baseband signal generation for generating an SC-FDMA baseband signal, a modulation scheme employed by the first radio signal is π/2-BPSK;
• K first-type parameters respectively correspond to the K first-type complex numbers, the K first-type complex numbers are respectively complex numbers each of which is of modulus equal to 1;
• the K REs occupy contiguous subcarriers in frequency domain, the K first-type parameters are related to a center frequency of the contiguous subcarriers occupied by the K REs, each of the K first-type parameters is related to a length of a cyclic prefix of an RE onto which a corresponding first-type complex number is mapped;
• the first radio signal carries a first bit block, the K first-type parameters and the first bit block are used for generating the K first-type complex numbers, the K first-type parameters are unrelated to bits in the first bit block, the K REs are distributed on more than one subcarrier in frequency domain, and the K REs are distributed on more than one multicarrier symbol in time domain;
• any of the K first-type parameters is related to a time domain position of an RE out of the K REs onto which a corresponding first-type complex number is mapped;
• a time-domain position of one RE of the K REs among the K REs refers to an index of a multicarrier symbol occupied by the RE among multicarrier symbols occupied by the K REs;
• each of the K REs occupies a SC-FDMA subcarrier in frequency domain, and an SC-FDMA multicarrier symbol in time domain, an SC-FDMA multicarrier symbol comprising a CP.

A UE for wireless communications, comprising:

• a first receiver, receiving a first signaling;
• and
• a first transmitter, transmitting a first radio signal;
• wherein the first signaling is used for determining K Resource Elements(REs), K first-type complex numbers are respectively mapped onto the K REs, the K first-type complex numbers are used for generating a baseband signal of the first radio signal through a baseband signal generation for generating an SC-FDMA baseband signal, a modulation scheme employed by the first radio signal is π/2-BPSK;
• K first-type parameters respectively correspond to the K first-type complex numbers, the K first-type parameters are respectively complex numbers each of which is of modulus equal to 1;
• the K REs occupy contiguous subcarriers in frequency domain, the K first-type parameters are related to a center frequency of the contiguous subcarriers occupied by the K REs, each of the K first-type parameters is related to a length of a cyclic prefix of an RE onto which a corresponding first-type complex number is mapped;
• the first radio signal carries a first bit block, the K first-type parameters and the first bit block are used for generating the K first-type complex numbers, the K first-type parameters are unrelated to bits in the first bit block, the K REs are distributed on more than one subcarrier in frequency domain, and the K REs are distributed on more than one multicarrier symbol in time domain;
• any of the K first-type parameters is related to a time domain position of an RE out of the K REs onto which a corresponding first-type complex number is mapped;
• a time-domain position of one RE of the K REs among the K REs refers to an index of a multicarrier symbol occupied by the RE among multicarrier symbols occupied by the K REs;
• each of the K REs occupies a SC-FDMA subcarrier in frequency domain, and an SC-FDMA multicarrier symbol in time domain, an SC-FDMA multicarrier symbol comprising a CP.

A base station for wireless communications, comprising:

• a second transmitter, transmitting a first signaling;
• and
• a second receiver, receiving a first radio signal;
• wherein the first signaling is used for determining K Resource Elements(REs), K first-type complex numbers are respectively mapped onto the K REs, the K first-type complex numbers are used for generating a baseband signal of the first radio signal through a baseband signal generation for generating an SC-FDMA baseband signal, a modulation scheme employed by the first radio signal is π/2-BPSK;
• K first-type parameters respectively correspond to the K first-type complex numbers, the K first-type parameters are respectively complex numbers of which each is of modulus equal to 1;
• the K REs occupy contiguous subcarriers in frequency domain, the K first-type parameters are related to a center frequency of the contiguous subcarriers occupied by the K REs, each of the K first-type parameters is related to a length of a cyclic prefix of an RE onto which a corresponding first-type complex number is mapped;
• the first radio signal carries a first bit block, the K first-type parameters and the first bit block are used for generating the K first-type complex numbers, the K first-type parameters are unrelated to bits in the first bit block, the K REs are distributed on more than one subcarrier in frequency domain, and the K REs are distributed on more than one multicarrier symbol in time domain;
• any of the K first-type parameters is related to a time domain position of an RE out of the K REs onto which a corresponding first-type complex number is mapped;
• a time-domain position of one RE of the K REs among the K REs refers to an index of a multicarrier symbol occupied by the RE among multicarrier symbols occupied by the K REs;
• each of the K REs occupies a SC-FDMA subcarrier in frequency domain, and an SC-FDMA multicarrier symbol in time domain, an SC-FDMA multicarrier symbol comprising a CP.