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학술지 Frequent-handover Mitigation in Ultra-dense Heterogeneous Networks
Cited 63 time in scopus Download 6 time Share share facebook twitter linkedin kakaostory
저자
Md Mehedi Hasan, 권성오, 오상철
발행일
201901
출처
IEEE Transactions on Vehicular Technology, v.68 no.1, pp.1035-1040
ISSN
0018-9545
출판사
IEEE
DOI
https://dx.doi.org/10.1109/TVT.2018.2874692
협약과제
17HF1600, (통합)초연결 스마트 서비스를 위한 5G 이동통신 핵심기술개발, 정현규
초록
In a heterogeneous network (HetNet) with ultra-dense small-cell deployment, fast-moving users may experience frequent handovers between small cells owing to the small coverage areas of those cells. Moreover, due to shadowing and channel fading, static or slow-moving users can also experience frequent handovers, called ping-pongs. Such redundant handovers are unacceptable, and can cause packet losses or packet delays leading to a poor user experience. To solve these unwanted handover problems, we propose a frequent handover mitigation algorithm for ultra-dense HetNets. Based on mobility behavior, the proposed algorithm categorizes frequent handover-experience users as either fast-moving or ping-pong users. Fast-moving users are then handed over to the macro layer, and ping-pong users are managed by adjustment of handover parameters. However, if ping-pongs cannot be avoided through handover-parameter adjustment, ping-pong users are handed over to the macro layer as well. Simulation results show that the proposed algorithm can reduce 79.56% of the overall handovers, and increase network throughput by 10.82%.
KSP 제안 키워드
Channel fading, Handover parameters, Mobility behavior, Network throughput, Parameter Adjustment, Ping-pong, Small cells, Ultra-dense, cell deployment, heterogeneous network(HetNet), packet loss