Improving the Performance of Handoff Calls using Frequency Sharing

In this paper, a two-tier cellular wireless network is characterized by overlapping the service area for managing the new calls users having different mobility speed. The overlapping property of the two-tier system provides the advantages that share the traffic load to improve the efficiency of new calls subscriber with guard channels in cell to handle the handoff calls. Using Guard channels, our strategy have the prioritization to the handoff calls. Micro cells are used to provide the services to slow-speed, high-intensity traffic area users and macro cells are overlaid over more than one micro cell cater mainly to lower density, high-speed users. The two-tier of micro cells and macro cells provide the secondary resource to provide the service for new calls as well as handoff calls with guard channels as overflow the slow speed users in macro cell by sharing the frequency in vertical direction as well as sharing the frequency in horizontal direction in the upper layer. The call lose probability of aggregate calls are developed through numerical analysis. The results justify the advantages of proposed strategy.