Adaptive Flow Control with Fuzzy Logic in Wireless Network
JI Qi-chun · Microelectronics & Computer · 2006
Comparing to wire networks, the application of TCP over wireless networks is much different due to high bit error rates and fading and handoff. A new approach to improve transport control protocol (TCP) throughput in wireless networks is proposed, in which a fuzzy adaptive control algorithm based on BS buffer changing is adopted to calculate the congest window, and explicit feedback to TCP sender. As a result, the TCP sending window can respond to the load changes of networks rapidly, the loss of packets is avoided and the TCP flow becomes smoother. The simulation results show that this method can strengthen the adaptation and channel errors processing capability in real time and improve the throughput of the network, and this control scheme is more robust and adaptive than normal Snoop.