Fuzzy packet size control for delay sensitive traffic in ad hoc networks

In this paper is considered optimal packet size definition for delay sensitive traffic in Wireless Local Area Network (WLAN) based ad hoc networks. The aim of the paper is to introduce a fuzzy expert system, which control packet size for prevailing network conditions. The selected input parameters for the expert system are a packet error rate (PER) and a change of PER. The model was valitated by simulating delay sensitive Voice Over Internet Protocol (VoIP traffic). The results demonstrate that the developed fuzzy expert system is able to set packet size values to the prevailing optimum level very fast and to increase number of VoIP connections even 40%.