Method and device used for wireless communication

A first node for wireless communications, comprising:

• a first receiver, operating a first data block set;
• and
• a first transmitter, transmitting first charging information;
• wherein a size of data in the first data block set is used to generate the first charging information, the first charging information comprises a first identity (ID) set, and the first ID set comprises a first ID and a second ID;
• the first ID is a link layer ID;
• the operating action is receiving, a destination ID field of a MAC header of a MAC PDU used to carry the first data block set comprises at least partial bits in the first ID, when a destination link layer ID list maintained by a node indicated by the second ID comprises the first ID, the first ID identifies a receiver of the first data block set, and when a destination link layer ID list maintained by a node indicated by the second ID does not comprise the first ID, the first ID does not indicate a receiver of the first data block set;
• or, the operating action is transmitting, a source ID field of a MAC header of a MAC PDU used to carry the first data block set comprises at least partial bits in a first ID, when a source link layer ID list maintained by a node indicated by the second ID comprises the first ID, the first ID indicates a generator of the first data block set, and when a source link layer ID list maintained by a node indicated by the second ID does not comprise the first ID, the first ID does not indicate a generator of the first data block set.