한국통신학회논문지 B : 네트워크 및 융합 서비스, v.28, no.8B, pp.699-706
ISSN
1226-4717
Publisher
한국통신학회 (KICS)
Language
Korean
Type
Journal Article
Abstract
본 논문은 국내 ATM망을 대상으로 실시간 VBR트래픽을 측정하고 그의 특성을 분석하여 기존의 연구에서 ATM VBR 특성이 2-상태 MMPP 모델 기반의 On-Off 특성을 갖는다는 이론의 적합성을 검증한 것으로 분석결과 국내 ATM망의 VBR 트래픽 특성은 2-상태 MMPP 모델을 따르지 않으며 On 구간의 도착율 (λ1)은 협약 대역폭 주기 중심에서 0.93-0.96의 확률로 도착하는 거의 결정적(Deterministic) 특성을 가지고, On구간에서 Off구간의 천이률(T1) 및 Off 구간에서 On구간의 천이률(T2)은 마코브 체인의 특성을 따르지 않는 단순 랜덤 변수의 특성을 갖는 것으로 검정되었다. 따라서, 국내 ATM망의 VBR 특성은 MMPP 모델로 표현 할 수 없으며 일반적인 On-Off 모델로 표현되어야 함을 확인하였다. 본 연구 결과는 실질적인 ATM망 서비스 회선 트래픽을 대상으로 측정, 분석, 검증한 것이므로 국내 ATM망에 적용하기 위한 모든 장치 및 네트워크 설계에 이 결과가 사용될 수 있으며 국내 ATM 망에 적용된 트래픽 관리 기능을 사용하는 모든 ATM 망의 트래픽 모델로 사용할 수 있다.
KSP Keywords
On-off
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