ANALYSIS OF THE CSMA/CA SCHEME FOR WIRELESS LOCAL AREA NETWORKS

The current stage of telecommunication technologies development is characterized by the rapid growth use wireless in access networks and requirements for its quality. bottleneck that significantly reduces bandwidth each subscriber connection total local network shared among active members technology used. management sub-layer to physical environment responsible this architecture. main method used at Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA) scheme. This work devoted analysis CSMA/CA scheme an analytical model further study improvement networks. input data a transition state diagram area station transmission mode. According scheme, stations cannot change their after starting frame until confirmation successful reception arrives from addressee or time wait it expires. Considering this, proposed simplified analysis. operation described using system differential equations. As result solution system, expressions representing probability being states as function intensities station’s transitions another are derived. values these depend on both outgoing traffic network. resulting can be they make possible estimate different ratios output external generated other develop enhanced algorithm adapting parameters specific loads