An efficient rate switching scheme for IEEE 802.11 wireless LANs

In this paper, we propose an efficient rate switching scheme for IEEE 802.11 wireless LANs. The proposed scheme switches the transmission rate by the patterns of transmission successes and failures, and the measured signal strength of a recently received packet. Using the proposed scheme, a transmitter is able to do efficient rate switching operations under the various channel conditions without introducing additional overhead. Our simulation study shows that the proposed scheme shows better performance than existing rate adaptation schemes under the various channel changing conditions.