상세정보
학술지
ZEUS: Handover Algorithm for 5G to Achieve Zero Handover Failure
- 발행일
- 202206
- 출처
- ETRI Journal, v.44 no.3, pp.361-378
- ISSN
- 1225-6463
- 출판사
- 한국전자통신연구원 (ETRI)
- 협약과제
- 20JH1300, (초저지연-2세부) 5G URLLC 서비스를 위한 초저지연 무선 접속 기술 개발, 이희수
- 초록
- In 5G, the required target for interruption time during a handover (HO) is 0혻ms. However, when a handover failure (HOF) occurs, the interruption time increases significantly to more than hundreds of milliseconds. Therefore, to fulfill the requirement in as many scenarios as possible, we need to minimize HOF rate as close to zero as possible. 3GPP has recently introduced conditional HO (CHO) to improve mobility robustness. In this study, we propose ?쏾Ero handover failure with Unforced and automatic time-to-execute Scaling?? (ZEUS) algorithm to optimize HO parameters easily in the CHO. Analysis and simulation results demonstrate that ZEUS can achieve a zero HOF rate without increasing the ping-pong rate. These two metrics are typically used to assess an HO algorithm because there is a tradeoff between them. With the introduction of the CHO, which solves the tradeoff, only these two metrics are insufficient anymore. Therefore, to evaluate the optimality of an HO algorithm, we define a new integrated HO performance metric, mobility-aware average effective spectral efficiency (MASE). The simulation results show that ZEUS provides higher MASE than LTE and other CHO variants.
- KSP 제안 키워드
- Analysis and simulation, Handover algorithm, Handover failure, Interruption time, Mobility-aware, Ping-pong, Spectral efficiency(SE), performance metrics, simulation results
본 저작물은 공공누리 제4유형 : 출처표시 + 상업적 이용금지 + 변경금지 조건에 따라 이용할 수 있습니다.
