An Access Method by Using Fixed Backoff for Wireless LANs

In a wireless LAN, since two or more terminals in a service area do the random access in a signal channel, it is necessary to achieve an efficient access that reduces the frame collision. Under the standard IEEE 802.11 protocol, each terminal sets a random backoff. Collision avoidance are being achieved while it generates useless standby time and acheives low throughput. To solve that problem, this paper proposes a channel access method which fixed backoff after success transmission. Via simulation, the proposed method reduces frame collisions and improves throughput . Furthermore, our method provides less frame loss probability and smaller file transfer delay.