Evaluating performance of the HIPERLAN CAC layer protocol for asynchronous traffic

The growing interest in wireless systems and networks has led to the first wireless LAN (WLAN) protocols. The medium access control (MAC) layer protocols of such protocol suites are of key importance. The Radio Equipment and Systems (RES) Technical Committee of the European Telecommunications Standards Institute has proposed the High PErformance Radio LAN (HIPERLAN) protocol suite. We present study, analyze and evaluate the performance of the MAC layer of the HIPERLAN protocol suite for asynchronous data transfer. Analytical models that take into account the phenomena of hidden nodes and capture are presented during the analysis. Numerical results from both analysis and simulation are presented, so that the issues involved are better understood.