At block 2110, the method 2100 may include transmitting, by the first node, a signal over the unlicensed radio frequency spectrum band. The signal may indicate that the first node has emergency data to transmit. In some examples, the signal may include an indication of a maximum time span of a transmission of the emergency data by the first node. The operation(s) at block 2110 may be performed using the wireless communication management module 1220, 1320, 1420, 1760, and/or 1860 described with reference to