Method and device in nodes used for wireless communication

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

• transmitting a first signaling, the first signaling being used to indicate a first priority, a first parameter and a first radio resource block;
• a first advancement priority is used to determine a first threshold;
• wherein the first parameter is used to indicate whether the first radio resource block is to be reserved for an initial transmission, and the first priority and the first parameter are jointly used to determine whether the first radio resource block can be occupied by a receiver of the first signaling;
• the first advancement is linear with the first priority and the first priority offset;
• the first parameter is used to determine the first priority offset;
• or, wherein a first threshold is linear with a first reference threshold and a first threshold offset;
• the first priority is used to determine the first reference threshold;
• the first parameter is used to determine the first threshold offset.

A first node for wireless communications, comprising:

• a first receiver, receiving a first signaling, the first signaling being used to indicate a first priority, a first parameter and a first radio resource block;
• the first receiver, determining a first advancement priority;
• wherein the first parameter is used to indicate whether the first radio resource block is to be reserved for an initial transmission, and the first priority and the first parameter are jointly used to determine whether the first radio resource block can be occupied by the first node;
• the first advancement priority is linear with the first priority and a first priority offset;
• the first parameter is used to determine the first priority offset;
• the first advancement priority is used to determine a first threshold.

A second node for wireless communications, comprising:

• a second transmitter, transmitting a first signaling, the first signaling being used to indicate a first priority, a first parameter and a first radio resource block;
• a first advancement priority is used to determine a first threshold;
• wherein the first parameter is used to indicate whether the first radio resource block is to be reserved for an initial transmission, and the first priority and the first parameter are jointly used to determine whether the first radio resource block can be occupied by a receiver of the first signaling;
• the first advancement is linear with the first priority and the first priority offset;
• the first parameter is used to determine the first priority offset;
• or, wherein a first threshold is linear with a first reference threshold and a first threshold offset;
• the first priority is used to determine the first reference threshold;
• the first parameter is used to determine the first threshold offset.