OBS网络中基于自适应阈值判决的高效混合偏转重传方案
Adaptive threshold-based decision for efficient hybrid deflection and retransmission scheme in OBS networks
摘要：
突发竞争是光突发交换（OBS）网络中一个众所周知的挑战性问题。偏转路由用于解决争用。突发重传用于通过重传丢失的突发来降低突发丢失率（BLR）。以前的工作表明，结合偏转和重传优于纯偏转和纯重传的方法。本文提出了一种新的自适应混合偏转和重传（AHDR）的方法，动态结合偏转和重传方法的基础上的网络条件，如BLR和链路利用率。网络模拟器2（ns-2）是用来模拟所提出的方法在不同的网络拓扑结构。仿真结果表明，该方法通过使用自适应判决阈值，在BLR方面优于静态方法。
英文摘要：
Burst contention is a well-known challenging problem in Optical Burst Switching (OBS) networks. Deflection routing is used to resolve contention. Burst retransmission is used to reduce the Burst Loss Ratio (BLR) by retransmitting dropped bursts. Previous works show that combining deflection and retransmission outperforms both pure deflection and pure retransmission approaches. This paper proposes a new Adaptive Hybrid Deflection and Retransmission (AHDR) approach that dynamically combines deflection and retransmission approaches based on network conditions such as BLR and link utilization. Network Simulator 2 (ns-2) is used to simulate the proposed approach on different network topologies. Simulation results show that the proposed approach outperforms static approaches in terms of BLR by using an adaptive decision threshold.
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