Persistent Aggressive Hybrid Channel Allocation Scheme for GSM Network

Ever increasing growth in cellular mobile user population, coupled with scare radio spectrum has put stringent demand on optimization of channel utilization methodology. An efficient channel reuse scheme will ensure maximum availability of idle channels for new and handoff calls. In this paper we study fixed and dynamic channel allocation schemes. An attempt has been made to propose and evaluate a persistent and aggressive hybrid channel scheme which shows outperformance as compared with dynamic channel allocation scheme. Efficiency of GSM network is directly related to the better management of available channels and their efficient reuse. The proposed scheme is a continuous process which calculates the channel allocation cost for a new call. As soon as new call is allowed, algorithm starts calculating the cost of all available channels and attempts to rearrange them in order of increasing cost of allocation. These algorithms will automatically switchover/ interchange channels in use with lower cost channel, thereby ensuring maximum packing among the cluster of cells. This paper considers co-channel interference and the constraint of reuse distance.