Method and device in nodes used for wireless communication

A second node for wireless communications, comprising:

• a second transmitter, transmitting a first signaling, the first signaling being used to determine a first parameter and a second parameter, the first parameter and the second parameter being respectively for two TBs, the first parameter being one of MCS-related parameters or a number of transmission layer(s), and the second parameter being one of MCS-related parameters or a number of transmission layer(s);
• and
• a second receiver, receiving a first PUSCH, the first PUSCH carrying a target coded bit group, the target coded bit group comprising multiple coded bits;
• wherein the first signaling is used to schedule the first PUSCH;
• a first UCI coded bit sequence comprises coded bits for UCI, a length of the first UCI coded bit sequence depends on the second parameter, and the target coded bit group depends on the first UCI coded bit sequence;
• the target coded bit group depends on a first reserved resource pool, the first reserved resource pool comprises reserved resource elements for potential HARQ-ACK transmission, and the first parameter is used to determine the first reserved resource pool.

A method in a first node for wireless communications, comprising:

• receiving a first signaling, the first signaling being used to determine a first parameter and a second parameter, the first parameter and the second parameter being respectively for two TBs, the first parameter being one of MCS-related parameters or a number of transmission layer(s), and the second parameter being one of MCS-related parameters or a number of transmission layer(s);
• and
• transmitting a first PUSCH, the first PUSCH carrying a target coded bit group, the target coded bit group comprising multiple coded bits;
• wherein the first signaling is used to schedule the first PUSCH;
• a first UCI coded bit sequence comprises coded bits for UCI, a length of the first UCI coded bit sequence depends on the second parameter, and the target coded bit group depends on the first UCI coded bit sequence;
• the target coded bit group depends on a first reserved resource pool, the first reserved resource pool comprises reserved resource elements for potential HARQ-ACK transmission, and the first parameter is used to determine the first reserved resource pool.