Combined Neuro-Fuzzy Vertical Handover Decision Criteria for LTE/LTE-A Networks

Abstract

Verti??l h?nd?ver has gained signifi??nt imp?rt?n?e due t? the enh?n?ements in m?bility m?dels by the F?urth Gener?ti?n (4G) te?hn?l?gies. ? h?nd?ver de?isi?n s?heme in LTE netw?rks is either b?sed on single ?r multiple ?riteri?. The number ?f ?riteri? dire?tly depending ?n the t?t?l h?nd?ver time. Simil?rly, the time required f?r sele?ting ? t?rget netw?rk during h?nd?ver is ?ls? in?re?sed with the in?re?se in ? number ?f p?r?meters. Tr?diti?n?l h?nd?ver de?isi?n ?ppr???hes ?re m?inly b?sed ?n the single p?r?meter. But, with the intr?du?ti?n ?f heter?gene?us wireless netw?rks, the perf?rm?n?e ?f these single p?r?meter de?isi?n s?hemes is highly redu?ed. Theref?re, rese?r?hers intr?du?e multi-?riteri? h?nd?ver de?isi?n s?hemes. The ??mplexity ?nd pr??essing ?f multi-?riteri? during h?nd?ver is ? ??mplex j?b ?nd hen?e these s?hemes require high h?nd?ver time whi?h ultim?tely le?ds t? the high p??ket l?ss ?nd even bre?king ?f ??nne?ti?n. M?re?ver, these enh?n?ements ?re limited t? spe?ifi? s?en?ri?s ?nd hen?e d? n?t pr?vide supp?rt f?r generi? m?bility. T? ?ddress the ?h?llenges, ? generi? verti??l h?nd?ver m?n?gement s?heme f?r heter?gene?us wireless netw?rks is pr?p?sed. A Neur?-fuzzy b?sed verti??l h?nd?ver de?isi?n m?del has been offered in ?rder t? impr?ve Q?S in heter?gene?us wireless netw?rks. T? keep the ??nne?ti?n ?live during h?nd?ver ?n impr?ved h?nd?ver str?tegy has been offered.