Method and device in nodes used for wireless communication

A second node for wireless communications, comprising:

• a second transmitter, transmitting a first information block, the first information block being used to disable HARQ-ACKs for K1 HARQ process identities, the K1 HARQ process identities being a subset of K HARQ process identities, K1 being a positive integer greater than 1 and K being a positive integer greater than K1;
• a third transmitter, transmitting a first signaling in a first time-frequency resource pool, the first time-frequency resource pool belonging to a search space set;
• the first signaling indicating a transmission of Q radio signals, the Q radio signals respectively comprising Q data units;
• and
• a third receiver, receiving a target information block in a first resource set;
• wherein the first signaling is used to indicate Q HARQ process identities, and HARQ process identities of the Q data units are respectively the Q HARQ process identities;
• the target information block comprises M1 bit group(s), and Q1 bit group(s) in the M1 bit group(s) is(are respectively) used to indicate whether Q1 data unit(s) is(are) correctly received, and any bit group in the M1 bit group(s) comprises at least one bit;
• the Q1 data unit(s) consists(consist) of data unit(s) whose corresponding HARQ process identity(identities) is(are) other than the K1 HARQ process identities among the Q data units;
• Q1 is a non-negative integer, and M1 is a positive integer not less than the Q1;
• any bit other than the Q1 bit group(s) in the M1 bit group(s) is reserved, and the first signaling at most indicate P HARQ process identities other than the K1 HARQ process identities, M1 being related to the P;
• the P is a positive integer greater than 1.

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

• receiving a first information block, the first information block being used to disable HARQ-ACKs for K1 HARQ process identities, the K1 HARQ process identities being a subset of K HARQ process identities, K1 being a positive integer greater than 1 and K being a positive integer greater than K1;
• monitoring a first signaling in a first time-frequency resource pool, the first time-frequency resource pool belonging to a search space set;
• when the first signaling is detected, receiving Q radio signals according to an indication of the first signaling, the Q radio signals respectively comprising Q data units;
• and
• transmitting a target information block in a first resource set;
• wherein the first signaling is used to indicate Q HARQ process identities, and HARQ process identities of the Q data units are respectively the Q HARQ process identities;
• the target information block comprises M1 bit group(s), and Q1 bit group(s) in the M1 bit group(s) is(are respectively) used to indicate whether Q1 data unit(s) is(are) correctly received, and any bit group in the M1 bit group(s) comprises at least one bit;
• the Q1 data unit(s) consists(consist) of data unit(s) whose corresponding HARQ process identity(identities) is(are) other than the K1 HARQ process identities among the Q data units;
• Q1 is a non-negative integer, and M1 is a positive integer not less than the Q1;
• any bit other than the Q1 bit group(s) in the M1 bit group(s) is reserved, and the first signaling at most indicate P HARQ process identities other than the K1 HARQ process identities, M1 being related to the P;
• the P is a positive integer greater than 1.