Channel adaptive fragmentation mechanism for IEEE 802.11 WLANs

We examine the impact of channel errors and collisions on the performance of Legacy IEEE 802.11 fragmentation (LF), and find the optimal fragment size depends on both channel condition and network size. Next, we present a channel Adaptive fragmentation scheme (ADF), which considers both the quality of wireless channel and the contention among nodes, and has the ability to adapt fragment size dynamically according to the channel condition. Simulation shows that ADF has distinct performance improvements in noisy channel and large size networks.