Method and device in nodes used for wireless communication

A second node for wireless communications, comprising:

• a first transmitter, transmitting a first signaling, the first signaling being used to indicate a first reference signal resource;
• and
• a second transceiver, executing a first signal in a first time-frequency resource set, the first reference signal resource being used to determine spatial parameters of the first signal;
• wherein the first signaling is used to indicate the first time-frequency resource set;
• the first reference signal resource is one of K1 candidate reference signal resources, K1 is a positive integer greater than 1, and the first signaling indicates the first reference signal resource from the K1 candidate reference signal resources;
• a target reference signal resource set comprises K1 candidate reference signal resources, and the target reference signal resource set is one of M1 reference signal resource sets, where M1 is a positive integer greater than 1;
• time-domain resources occupied by the first time-frequency resource set are used to determine the target reference signal resource set from the M1 reference signal resource sets;
• the executing action is transmitting, or the executing action is receiving.

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

• receiving a first signaling, the first signaling being used to indicate a first reference signal resource;
• and
• operating a first signal in a first time-frequency resource set, the first reference signal resource being used to determine spatial parameters of the first signal;
• wherein the first signaling is used to indicate the first time-frequency resource set;
• the first reference signal resource is one of K1 candidate reference signal resources, K1 is a positive integer greater than 1, and the first signaling indicates the first reference signal resource from the K1 candidate reference signal resources;
• a target reference signal resource set comprises K1 candidate reference signal resources, and the target reference signal resource set is one of M1 reference signal resource sets, where M1 is a positive integer greater than 1;
• time-domain resources occupied by the first time-frequency resource set are used to determine the target reference signal resource set from the M1 reference signal resource sets;
• the operating action is receiving, or, the operating action is transmitting.