For example, FIG. 29A shows that the FailureInformation message may comprise an indication indicating whether this message is sent due to (1) or (2), e.g., whether (1) the failure information message 212 is sent upon the wireless node 30(27) itself detecting an RLF on one of the immediate upstream links for the multiple radio paths, or (2) the wireless node 30(27) receiving an RLF notification message 42(27) from another node such as wireless relay node 24(27). In the example implementation shown in FIG. 29A, this indication is implemented as FailureType, an information element (IE) in the FailureInformation message to indicate the type of the failure that causes transmission of the message.