sentences:  The IEEE 802.11 RTS/CTS mechanism is adopted from this protocol.It uses "RTS-CTS-DS-DATA-ACK" frame sequence for transferring data, sometimes preceded by an "RTS-RRTS" frame sequence, in view to provide solution to the hidden node problem.Although protocols based on MACAW, such as S-MAC, use carrier sense in addition to the RTS/CTS mechanism, MACAW does not make use of carrier sense.