Modular handover decision system based on fuzzy logic for wireless networks

The future generation wireless networks will demand more intelligent and adaptive handover decision mechanisms to fulfill users´ expectations in terms of seamless mobility over extensive area, minimum usage cost, high data rate and adequate QoS provision and so on. The use of fuzzy logic is one of the methods to enhance system intelligence. Most fuzzy logic based approaches proposed in the literature are monolithic in which the decision are made by a single decision engine. As a result, the decision engine needs a large number of fuzzy rules to reach the final decision. This computational complexity requires a significantly long execution time, which may not be acceptable for real-time applications. We are proposing a new modular handover decision algorithm based on fuzzy logic, which aims to reduce the execution time. The results show that this approach has a significant advantage over a monolithic approach.