07MT2300, Carrier Class Ethernet Technology,
Joo Bheom Soon
Abstract
본 논문에서는 차세대 패킷 네트워크에서의 서비스 품질 기능 고도화를 목적으로 절대적 지연 차별화 기능을 제공하는 알고리듬을 제시하고 시뮬레이션을 통해 성능 분석을 수행한다. 또한, 제안된 알고리듬을 XPC 860 CPU 기반의 시험 보드상에서 VHDL 로 구현하여 실제 트래픽 입력 상황하에서의 성능 분석을 수행한다. 제안된 알고리듬은 매 시간 구간마다 입력되는 트래픽을 측정하고 이를 기반으로 다음 시간 구간 동안 입력될 트래픽의 양을 예측한 후 실제로 다음 시간 구간 동안에 입력된 트래픽과 비교하여 오차분을 도출하여 이를 다음 타임 슬롯의 지연 차별화 동작에 지속적으로 반영하는 것이 특징적 요소 이므로 오차분을 고려하지 않는 기존 방식에 비해 버스트 트래픽에 대하여 우수한 적응성을 보여준다. 제안된 방식의 성능은 시뮬레이션과 실제 보드상에서의 시험을 통해 절대적 지연 목표를 충족시킴과 동시에 기존 방식에 비해 버스트 트래픽에 대하여 성능 개선 효과가 달성됨이 확인된다.
KSP Keywords
Next generation networks(NGN)
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