Research
Cross Spectrum Switching in Mobility Scenario for Signaling Overhead Minimization in HetNet
The issue of mobility concern in heterogeneous network is addressed in this paper. The coding approach of spectrum utilization and signal effort in user mobility in heterogeneous network is been made. New coding approach of spectrum utilization in concern with resource utilization and signaling overhead is focused. New approach of spectrum utility level is been made to overcome the issue of signaling overhead in spectrum utilization in Het Net. For achieving the objective of fairness in heterogeneous network under mobility constraint, multi objective coordination approach for optimal resource utilization is proposed. The resource utilization problem is defined by the effective spectrum utilization among network users minimizing the signaling overhead. The simulation observations developed shows an improvement in significant resource utilization in compare to conventional approaches.
Optimum Utilization of Spectrum Holes in Cognitive Radio Networks using Opportunistic Spectrum Band Allocation Policy for Handoff Prioritization
Two main problems in wireless communications are, limited available spectrum and inefficiency in the spectrum allocation policy. These problems lead to the blocking of both initial and hand-off calls. Cognitive radio (CR) offers solution by utilizing the spectrum holes in space without introducing an unacceptable fear of harmful interference for the primary user and also solves the spectrum inefficiency and spectrum scarcity problem. Spectrum allocation scheme is proposed in two phases. In the first phase, a collision between two calls for spectral band allocation is resolved. In second phase, spectral band allocation among a number of calls is considered. The main objective is to minimize the forced termination of hand-off calls and to achieve opportunistic spectrum channel allocation by assigning different priority levels to different calls.
