Question

Suppose the IEEE 802.11 RTS and CTS frames were as long as the standard DATA and ACK frames. Would there be any advantage to using the CTS and RTS frames? Why or why not

Answer 1

There is no advantage in using CTS and RTS frames that are as long as the standard DATA and ACK frames.

• Generally, the size of the frame is proportional to the probability of a collision.

• Since the RTS and CTS are short control frames, the probability of a collision is lower.

• Collision involving a RTS and CTS frame will last only for the duration of the short RTS or CTS frame.

• If RTS and CTS are as long as the standard DATA, then collision will last for longer duration and hence the probability of a collision is higher.

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