Radio resource configuration method and device, user equipment and network element

A method comprising:

• sending, by a first network element using a first radio access technology (RAT) between the first network element and a user equipment (UE), and via a first signaling radio bearer (SRB) of the of the first RAT, a radio resource configuration to the UE for configuring a resource of the first RAT;
• receiving, by a second network element using a second RAT between the second network element and the UE and through a second SRB of the second RAT, a message from the UE indicative of a failure of configuring the resource of the first RAT, the second SRB established between the second network element and the UE, and the second RAT different from the first RAT;
• and
• processing, by the second network element, the message,
• wherein the first network element and the second network element simultaneously provide a communication service for the UE over a radio interface.