Method and device in nodes used for wireless communication

A second node for wireless communications, comprising:

• a second transmitter, transmitting a first signaling and a first signal, transmitting a second signaling and a second signal;
• a second receiver, receiving a first bit block in a first time-frequency resource set, the first bit block being comprised of more than one bit;
• wherein the first signaling is used to determine time-frequency resources occupied by the first signal, the first bit block comprises a first information block, the first information block is used to indicate whether the first signal is correctly received, and the first information block comprises a positive integer number of bits;
• the first signaling is used to determine the first time-frequency resource set;
• an index of a serving cell to which the first signal belongs is equal to a candidate index of K1 candidate indexes, K1 being a positive integer greater than 1;
• a target index is equal to a candidate index of the K1 candidate indexes, and the target index is used to determine a position of the first information block in the first bit block;
• at least one of a property associated with the first signaling or a property associated with the first signal is used to determine the target index out of the K1 candidate indexes;
• a first index is equal to an index of a serving cell to which the first signal belongs, the K1 candidate indexes also comprise a second index, the second index being different from the first index, at least one of a property associated with the first signaling or a property associated with the first signal is used to determine whether the target index is the first index or the second index;
• the second signaling comprises configuration information of the second signal, the first bit block carries a second information block, and the second information block is used to indicate whether the second signal is correctly received;
• frequency-domain resources occupied by the second signal and frequency-domain resources occupied by the first signal belong to a same serving cell;
• there is at least one OFDM symbol belonging to time-domain resources occupied by the first signal and time-domain resources occupied by the second signal simultaneously;
• the first index is used to determine a position of the second information block in the first bit block;
• the first bit block is a piece of Uplink Control Information;
• a physical layer channel bearing the first signal comprises a PDSCH, a physical layer channel bearing the second signal comprises a PDSCH.

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

• receiving a first signaling and a first signal, receiving a second signaling and a second signal;
• and
• transmitting a first bit block in a first time-frequency resource set, the first bit block being comprised of more than one bit;
• wherein the first signaling is used to determine time-frequency resources occupied by the first signal, the first bit block comprises a first information block, the first information block is used to indicate whether the first signal is correctly received, and the first information block comprises a positive integer number of bits;
• the first signaling is used to determine the first time-frequency resource set;
• an index of a serving cell to which the first signal belongs is equal to a candidate index of K1 candidate indexes, K1 being a positive integer greater than 1;
• a target index is equal to a candidate index of the K1 candidate indexes, and the target index is used to determine a position of the first information block in the first bit block;
• at least one of a property associated with the first signaling or a property associated with the first signal is used to determine the target index out of the K1 candidate indexes;
• a first index is equal to an index of a serving cell to which the first signal belongs, the K1 candidate indexes also comprise a second index, the second index being different from the first index, at least one of a property associated with the first signaling or a property associated with the first signal is used to determine whether the target index is the first index or the second index;
• the second signaling comprises configuration information of the second signal, the first bit block carries a second information block, and the second information block is used to indicate whether the second signal is correctly received;
• frequency-domain resources occupied by the second signal and frequency-domain resources occupied by the first signal belong to a same serving cell;
• there is at least one OFDM symbol belonging to time-domain resources occupied by the first signal and time-domain resources occupied by the second signal simultaneously;
• the first index is used to determine a position of the second information block in the first bit block;
• the first bit block is a piece of Uplink Control Information;
• a physical layer channel bearing the first signal comprises a PDSCH, a physical layer channel bearing the second signal comprises a PDSCH.