Systems, methods, and instrumentalities are disclosed for transmitting a message. For example, a first radio access technology, RAT, and/or a second RAT may be determined. The first RAT may be determined for reception of data. The second RAT may be determined for the reception of the data, perhaps for example based on an indication received via the first RAT. The data may be received via a first node associated with the first RAT and a second node associated with the second RAT.