Method and device used for wireless communication

A second node for wireless communications, comprising:

• a first transmitter, transmitting a first message, the first message being used to configure at least a first RLC bearer;
• transmitting a second message, the second message indicating that the at least first RLC bearer is a candidate of multiple radio bearers;
• wherein whether any RLC bearer in multiple RLC bearers is failed is monitored, and the multiple RLC bearers are associated with the multiple radio bearers;
• when second RLC bearer failure is monitored, a first data unit set is transmitted through the first RLC bearer, the first data unit set belongs to a first radio bearer;
• the second RLC bearer is associated with the first radio bearer, and the first radio bearer is one of the multiple radio bearers;
• the second RLC bearer is one of the multiple RLC bearers;
• the second message is an RRC-layer signaling;
• the first data unit set comprises at least one data unit.

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

• receiving a first message, the first message being used to configure at least a first RLC bearer;
• receiving a second message, the second message indicating that the at least first RLC bearer is a candidate of multiple radio bearers;
• monitoring whether any RLC bearer in multiple RLC bearers is failed, the multiple RLC bearers being associated with the multiple radio bearers;
• and
• as a response to monitoring failure of a second RLC bearer, transmitting a first data unit set through the first RLC bearer, the first data unit set belonging to a first radio bearer;
• the second RLC bearer being associated with the first radio bearer, and the first radio bearer being one of the multiple radio bearers;
• the second RLC bearer being one of the multiple RLC bearers;
• wherein the second message is an RRC-layer signaling;
• the first data unit set comprises at least one data unit.