Method and device in a node used for wireless communication

A method in a second node for wireless communication, comprising:

• receiving a first sequence and a first radio signal, the first sequence being associated with the first radio signal, the first sequence is used for determining a time-frequency resource unit occupied by the first radio signal, the first sequence is used for determining a scrambling sequence of the first radio signal;
• the first sequence being transmitted on a first random-access channel, and a first bit block being used for generating the first radio signal;
• the first sequence is a random access preamble;
• the first random-access channel is a PRACH (Physical Random Access Channel) occasion;
• the first radio signal is transmitted on a PUSCH (Physical Uplink Shared Channel);
• transmitting a second radio signal, the second radio signal comprising a first information block;
• the second radio signal comprises one or more fields of an RRC (Radio Resource Control) IE (Information Element);
• and
• receiving a second sequence and a third radio signal, the second sequence being associated with the third radio signal, the second sequence is used for determining a time-frequency resource unit occupied by the third radio signal, the second sequence is used for determining a scrambling sequence of the third radio signal;
• the second sequence being transmitted on a second random-access channel, and the first bit block being used for generating the third radio signal;
• the second sequence is a random access preamble;
• the second random-access channel is a PRACH occasion;
• the third radio signal is transmitted on a PUSCH;
• wherein the first radio signal comprises a first identification, the first identification is used for determining the time-frequency resource unit occupied by the first radio signal;
• the first information block is used for triggering a transmission of the third radio signal;
• the first information block comprises a first sequence index, the first sequence index corresponds to the first sequence;
• the first information block is used for determining transmission parameters of the third radio signal.

A first node for wireless communication, comprising:

• a first transmitter, which transmits a first sequence and a first radio signal, the first sequence being associated with the first radio signal, the first sequence is used for determining a time-frequency resource unit occupied by the first radio signal, the first sequence is used for determining a scrambling sequence of the first radio signal;
• the first sequence being transmitted on a first random-access channel, and a first bit block being use for generating the first radio signal;
• the first sequence is a random access preamble;
• the first random-access channel is a PRACH (Physical Random Access Channel) occasion;
• the first radio signal is transmitted on a PUSCH (Physical Uplink Shared Channel);
• a first receiver, which receives a second radio signal, the second radio signal comprising a first information block;
• the second radio signal comprises one or more fields of an RRC (Radio Resource Control) IE (Information Element);
• and
• a second transmitter, which transmits a second sequence and a third radio signal, the second sequence being associated with the third radio signal, the second sequence is used for determining a time-frequency resource unit occupied by the third radio signal, the second sequence is used for determining a scrambling sequence of the third radio signal;
• the second sequence being transmitted on a second random-access channel, and the first bit block being used for generating the third radio signal;
• the second sequence is a random access preamble;
• the second random-access channel is a PRACH occasion;
• the third radio signal is transmitted on a PUSCH;
• wherein the first radio signal comprises a first identification, the first identification is used for determining the time-frequency resource unit occupied by the first radio signal;
• the first information block is used for triggering a transmission of the third radio signal;
• the first information block comprises a first sequence index, the first sequence index corresponds to the first sequence;
• the first information block is used for determining transmission parameters of the third radio signal.

A second node for wireless communication, comprising:

• a second receiver, which receives a first sequence and a first radio signal, the first sequence being associated with the first radio signal, the first sequence is used for determining a time-frequency resource unit occupied by the first radio signal, the first sequence is used for determining a scrambling sequence of the first radio signal;
• the first sequence being transmitted on a first random-access channel, and a first bit block being used for generating the first radio signal;
• the first sequence is a random access preamble;
• the first random-access channel is a PRACH (Physical Random Access Channel) occasion;
• the first radio signal is transmitted on a PUSCH (Physical Uplink Shared Channel);
• a third transmitter, which transmits a second radio signal, the second radio signal comprising a first information block;
• the second radio signal comprises one or more fields of an RRC (Radio Resource Control) IE (Information Element);
• and
• a third receiver, which receives a second sequence and a third radio signal, the second sequence being associated with the third radio signal, the second sequence is used for determining a time-frequency resource unit occupied by the third radio signal, the second sequence is used for determining a scrambling sequence of the third radio signal;
• the second sequence being transmitted on a second random-access channel, and the first bit block being used for generating the third radio signal;
• the second sequence is a random access preamble;
• the second random-access channel is a PRACH occasion;
• the third radio signal is transmitted on a PUSCH;
• wherein the first radio signal comprises a first identification, the first identification is used for determining the time-frequency resource unit occupied by the first radio signal;
• the first information block is used for triggering a transmission of the third radio signal;
• the first information block comprises a first sequence index, the first sequence index corresponds to the first sequence;
• the first information block is used for determining transmission parameters of the third radio signal.