Fuzzy Based Approach for Packet Dropping in Wireless Networks

In wireless networks, resource management is a very complicated issue because of scarcity in resources. This paper presents a fuzzy based packet dropping scheme for wireless networks in the context of future generation cellular networks. In this scheme, a buffer manager located at the base station uses a fuzzy controller for packet dropping based on three fuzzy parameters, namely, application priority (based on handoff and new calls), queue length and packet size. Fuzzy controller computes a dropping factor which helps in making decision to drop the packets from the queue at the base station. The scheme has been simulated in different network scenarios to test the operation effectiveness. The extensive simulation results shows that fuzzy based packet dropping scheme performs better than random early detection scheme in terms of buffer utilization, dropping probability, acceptance probability of handoff and new calls.