analysis of link efficiency and handoff with mobility management in cognitive radio
Publication Date : 12/04/2016
Cognitive radio cellular network has been proposed as a solution to spectrum scarcity and spectrum inefficiency problems. However, they face challenges based on the opportunistic communication of secondary user, making it more difficult to support seamless communications especially when user moves out of the serving cell. In this paper, a novel architecture is constructed to aggravate spectrum availability. Based on this architecture, a management framework is developed to support mobility events which consist of user spectrum mobility management and user mobility management. Spectrum mobility management defines spectrum band for opportunistically communication secondary users. User mobility management defines selection of handoff so as to banish call dropping by considering an extended area QoS analysis is performed based on blocking probability, dropping probability, failure probability. Simulation results show that proposed system achieves better performance in terms of mobility support in CR cellular communication.
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