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Design and Analysis of a Channel Access Protocol for WDM-Based Single-Hop Optical Networks

机译：基于WDM的单跳光网络信道接入协议的设计与分析

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摘要

We propose a channel access protocol for single-hop wavelength division multiplexing (WDM) optical networks. Each node is equipped with a fixed-tuned transmitter, a tunable transmitter, a fixed-tuned receiver, and a tunable receiver. The proposed protocol alleviates the drawbacks of a previous protocol, e.g., invalid data transmissions that follows receiver collisions and possible acknowledgment packet collisions with header/data packets, while retaining many advantages. As a result, the network performance in terms of throughput and packet delay is improved. Analytical models based on the timing diagram analysis, the continuous-time Markov chain, and the randomization technique are developed to assess the proposed protocol, and are validated through event-driven simulation. The performance is evaluated in terms of channel utilization, mean packet delay, and packet delay distribution with variations in the number of nodes, the offered traffic, the size of data packets, and the network propagation delay. Through numerical results and simulation studies, we show that the proposed protocol achieves better channel utilization and incurs lower packet delays.
机译：我们提出了一种用于单跳波分复用（WDM）光网络的信道访问协议。每个节点都配备有固定调谐的发射器，可调发射器，固定调谐的接收器和可调接收器。所提出的协议减轻了先前协议的缺点，例如，在接收机冲突之后无效的数据传输以及与报头/数据分组的可能的确认分组冲突，同时保留了许多优点。结果，在吞吐量和分组延迟方面的网络性能得以改善。开发了基于时序图分析，连续时间马尔可夫链和随机化技术的分析模型，以评估所提出的协议，并通过事件驱动仿真对其进行了验证。根据信道利用率，平均数据包延迟和数据包延迟分布（随节点数量，提供的流量，数据数据包大小和网络传播延迟）的变化来评估性能。通过数值结果和仿真研究，我们表明所提出的协议可以实现更好的信道利用率，并减少分组延迟。

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