Tuyển tập các báo cáo nghiên cứu về hóa học được đăng trên tạp chí hóa hoc quốc tế đề tài : An enhanced weighted performance-based handover parameter optimization algorithm for LTE networks | Bălan et al. EURASIP Journal on Wireless Communications and Networking 2011 2011 98 http content 2011 1 98 3 EURASIP Journal on Wireless Communications and Networking a SpringerOpen Journal RESEARCH Open Access An enhanced weighted performance-based handover parameter optimization algorithm for LTE networks 1 2 3 1 2 1 Irina Mihaela Bălan Bart Sas Thomas Jansen Ingrid Moerman Kathleen Spaey and Piet Demeester Abstract This article introduces an enhanced version of previously developed self-optimizing algorithm that controls the handover HO parameters of a long-term evolution base station in order to diminish and prevent the negative effects that can be introduced by HO radio link failures HO failures and ping-pong HOs and thus improve the overall network performance. The default algorithm selects the best hysteresis and time-to-trigger combination based on the current network status. The enhancement proposed here aims to maximize the gain provided by the algorithm by improving its convergence time. The effects of this enhancement have been studied in a rural scenario setting and compared to the original algorithm the results show a clear improvement faster convergence and better network performance because of the enhancement. Keywords LTE Self-Organization handover operator policy PDP 1 Introduction As the demand for services that can keep pace with the needs of the mobile client is increasing mobile network operators have to look for new solutions for providing their services faster and better than ever before. The promise of auto-tunable functions that control different network mechanisms such as handover HO load balancing and admission control is slowly becoming a very tempting reality for both operators and vendors. The self-optimization of future radio access networks is one of the main topics of today s research 1 2 . HO is the core procedure in any mobile network as it guarantees users freedom of movement while still being provided .
