Improved fault tolerant model for channel allocation in wireless communication

Efficient channel allocation to mobile hosts is of utmost importance in a cellular network. A genetic algorithm (GA) and Particle Swam Optimization (PSO) are very good optimization techniquesl in solving optimization problems, is explored to design a fault - tolerant cellular channel allocation model that allows a cell to continue communicating withits mobile hosts, even if there are insufficient channels available in the cell. Sometimes, the load over acell may increase to the extent that it needs more channels than it actually has in order to handle the traffic. On the other hand, it is quite possible tha the load in some other cell is less than its channel capapcity, resulting in underutilization of the channels. This problem is solved by temporarily taking unutilized channels more efficiently. The model also considers the handoff by using the reserved channel technique. A reserved pool of channels makes the model fault tolerant. Thus, the proposed work uses GA for fault-tolerant dynamic channel allocation to minimize the average number of blocked hosts and handoff failures in the mobile computing network. Simulation experiments evaluate the performance of the proposed model. Results have been compared with PSO reveals that the proposed model worls better in serving mobile hosts.