Study of reassignment strategy in Dynamic Channel Allocation scheme

In this work, an efficient channel utilization scheme based on the Distributed Dynamic Channel Assignment (DDCA) is proposed. It can handle three types of constraints Adjacent Channel Constraint (ACC), Co-Channel Constraint (CCC), Co- Site Constraint (CSC) simultaneously while assigning the channel. Previous methods like Dynamic Channel Selection and Reassignment (DCSR) scheme employs reassignment strategy to maximize the number of unavailable channels becoming available. This scheme transfers an ongoing call of one channel to the released channel if there is relatively lesser number of available channels becoming unavailable due to above mentioned constraints. The results are produced without reassignment. These results are compared with DCSR scheme. New call and handoff call block rates are plotted for comparison.