The KIPS Transactions:PartC (정보처리학회논문지C)

Korea Information Processing Society (한국정보처리학회)
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Performance of a Partial Burst Retransmission Mechanism in OBS Networks

버스트 부분 재전송 메커니즘을 적용한 OBS 네트워크 성능 분석

  • Published : 2005.10.01
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Abstract

We investigate the effects on performance of using a partial retransmission mechanism in Optical Burst Switched(OBS) networks. In our scheme, the lost segments of a burst are retransmitted in the OBS layer. We also propose an optical resource reservation using the partial retransmission mechanism. Our scheme attempts to improve the burst contention resolution and optical channel utilization. The performance of the proposed mechanism is analyzed by NS2 simulations. Simulation results indicate that link utilization of the OBS network is improved makedly at the expense of signaling and ingress buffers.

본 논문은 Optical Burst Switching(OBS) 네트워크상에서 버스트 부분 재전송 시그널링을 적용하여 버스트 층돌이 발생하였을 때 입구 노드에서 손실된 버스트 부분을 재전송하는 메커니즘을 제안하였다. 또한 버스트 부분 재전송 메커니즘을 확장한 광 자원 예약 방식을 기술하였다. 제안된 메커니즘을 사용함으로써 버스트 층돌로 인한 데이터손실을 OBS 계층에서 복원할 수 있고, 광 채널의 이용률을 높일 수 있다. 본 논문에서는 제안된 OBS 기능들을 NS2 시뮬레이터를 기반으로 구현하여 성능을 분석하였다 재전송을 위해 OBS 시그널링 기간동안 입구 노드에서 버스트를 저장함으로 인해서 필요로 되는 입구 노드 버퍼크기가 증가하는 대신 OBS 네트워크의 채널 이용률이 획기적으로 향상됨을 시뮬레이션 결과를 통해서 확인하였다.

Keywords

References

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