PERFORMANCE STUDY OF CHANNEL RESERVATION FOR AHEAD CELLS IN STREET MICRO-CELLULAR SYSTEMS

This paper proposes ''Channel Reservation for Ahead Cells (CRAC)'' sch eme for street micro-cellular systems. The scheme enables mobiles to r eserve the same channel over several cells at once. This paper analyze s both CRAC and FCA (Fixed Channel Assignment) in a ring-shaped servic e area where high speed mobiles and low speed mobiles move. In the ana lysis, the priority control which prioritizes hand-off calls and reser vation calls over new calls is also taken into account. Obtained resul ts include the blocking rate, the forced call termination rate, the av erage number of channel changings and the system utilization. From num erical results, CRAC is found to preform better than FCA with regard t o the average number of channel changings and the forced call terminat ion rate.