Wavelength management in time and wavelength division multiplexed passive optical networks (TWDM-PONs)
Wavelength management in time and wavelength division multiplexed passive optical networks (TWDM-PONs)
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DOI：
10.1109/glocom.2012.6503569
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发表时间：
2012-12
期刊：
影响因子：
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通讯作者：
Yuanqiu Luo;Meng Sui;F. Effenberger
中科院分区：
文献类型：
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作者：
Yuanqiu Luo;Meng Sui;F. Effenberger
时分和波分复用无源光网络（TWDM-PON）是下一代10 Gb/s以上光接入系统最有前途的候选方案之一。TWDM-PON系统通过在ONU处采用可调谐发射器和可调谐接收器来堆叠多个10吉比特脑桥（XG-PON）。在TWDM-PON的媒体接入控制（MAC）层，波长管理成为资源共享和分配的关键问题。在本文中，我们提出了一种机制来管理多波长的TWDM-PON系统。我们也使用多处理器调度分析模型这个问题。两种类型的启发式算法已被提出来放松NP难的复杂性问题，促进在线实施。一个TWDM-PON原型系统已经建成，以评估其性能。本文提出的两种算法已经在原型系统中实现，以测试它们的波长调谐成本和负载均衡能力。分析和测试表明，显着的结果。据作者所知，这是在实际的TWDM-PON原型系统中实现多波长管理机制的第一项工作，本文报告的结果有利于正在进行的下一代无源光网络第2阶段（NG-PON 2）的研究和标准的努力。
Time and wavelength division multiplexed passive optical network (TWDM-PON) is one of the most promising candidates of the next generation optical access system beyond 10Gb/s. The TWDM-PON system stacks multiple 10Gigabit PONs (XG-PONs) by employing tunable transmitters and tunable receivers at ONUs. In the TWDM-PON media access control (MAC) layer, wavelength management becomes a critical issue of resource sharing and assignment. In this paper, we propose a mechanism to manage multiple wavelengths in the TWDM-PON system. We also model this problem by using multiprocessor scheduling analysis. Two types of heuristic algorithms have been proposed to relax the NP-hard complexity problem and promote online implementation. A TWDM-PON prototype system has been built to evaluate its performance. The proposed two algorithms have been implemented in the prototype system to test their wavelength tuning cost and load balancing capability. Analysis and test demonstrate salient results. To the authors' best knowledge, this is the first work of implementing the multiple wavelength management mechanism in an actual TWDM-PON prototype system, and the reported results in this paper benefit the ongoing next generation passive optical network stage 2 (NG-PON2) research and standards efforts.