Using Fuzzy Logic to Mitigate IEEE 802.11 Handoff Latency

Multimedia transmissions are delay sensitive Internet applications. Because mobile stations move all of the time, handoff processes are necessary and unavoidable in wireless network environments. Since handoff processes tend to break the communication link, some researches have been done to reduce the break time and arrival delay during Internet multimedia applications. In this paper, we propose an approach based on fuzzy logic to evaluate the average and variation in signal strength received by a mobile station. According to our investigation, a mobile station needs to execute an active scan process only once to obtain the complete handoff parameters. Therefore, smaller handoff latency is expected