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학술지 Mobility Robustness Optimization for Handover Failure Reduction in LTE Small-Cell Networks
Cited 39 time in scopus Download 7 time Share share facebook twitter linkedin kakaostory
저자
Minh Thang Nguyen, 권성오, 김홍숙
발행일
201805
출처
IEEE Transactions on Vehicular Technology, v.67 no.5, pp.4672-4676
ISSN
0018-9545
출판사
IEEE
DOI
https://dx.doi.org/10.1109/TVT.2017.2787602
협약과제
17HF1600, (통합)초연결 스마트 서비스를 위한 5G 이동통신 핵심기술개발, 정현규
초록
In this paper, we propose a distributed mobility robustness optimization algorithm to minimize handover failures due to radio link failures by adjusting time-to-trigger and offset parameters. According to the reason for failure, the algorithm classifies handover failure into three categories (too late, too early, and wrong cell), and simultaneously optimizes three handover parameters according to the dominant failure. Moreover, the algorithm considers handover failures to each neighboring cell and adjusts handover parameters individually. Via simulation, we show how the proposed algorithm adaptively optimizes the parameters and outperforms previous algorithms in various mobile environments.
KSP 제안 키워드
Distributed mobility, Handover failure, Handover parameters, Link failure, Mobility Robustness Optimization, Optimization algorithm, Small Cell Network(SCN), mobile environment, radio link, time to trigger(TTT)