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Segment frame replication and elimination for redundant routing provision in the FlexE-over-WDM networks
Optical Switching and Networking ( IF 1.9 ) Pub Date : 2022-08-24 , DOI: 10.1016/j.osn.2022.100709
Jiawei Zhang , Xuejing Gao , Kexin Wu , Yuefeng Ji

Flexible Ethernet (FlexE)-over-WDM is one of the promising technologies of 5G transport networks that aims to provide a variety of Ethernet MAC rates over large capacity wavelength channels. Ultra-reliable communication is a key scenario of 5G, which poses a big challenge to the transport networks. To achieve ultra-reliability, frame replication and elimination for reliability (FRER) was proposed by IEEE. 802.1CB to provide redundant transmission in layer 2. However, previous studies of FRER considered to replicate MAC frames at source node and eliminate them at the destination, which may cause a waste of network resources, especially for the services that require different reliabilities in a condition of network with different packet loss rates of link and node. To this end, we propose a novel redundant routing scheme, called segment FRER (S-FRER), to balance the reliability and network efficiency. And a FlexE group allocation scheme is coming with S-FRER to assign the Flexible Ethernet channels along the path. Two heuristic algorithms, which are end-to-end FRER (E-FRER) and ordinal FRER (O-FRER), are compared with S-FRER. Simulation results show that S-FRER can satisfy diverse reliability requirements of services, and the resource redundancy and equipment cost are condensed.We further take the resource utilization efficiency as the optimization goal, and propose a FlexE Group allocation strategy based on segmented frame repetition and elimination to realize the resource redistribution of service flows on redundant routes. The experimental results verify the effectiveness of the scheme in terms of resource utilization efficiency.



中文翻译:

用于 FlexE-over-WDM 网络中冗余路由配置的分段帧复制和消除

灵活以太网 (FlexE)-over-WDM 是 5G 传输网络的有前途的技术之一,旨在通过大容量波长通道提供各种以太网 MAC 速率。超可靠通信是5G的关键场景,对传输网络提出了很大的挑战。为了实现超可靠性,IEEE 提出了帧复制和可靠性消除(FRER)。802.1CB在第2层提供冗余传输。然而,先前的FRER研究考虑在源节点复制MAC帧并在目的地消除它们,这可能会造成网络资源的浪费,特别是对于需要不同可靠性的业务在一个链路和节点丢包率不同的网络状况。为此,我们提出了一种新颖的冗余路由方案,称为分段FRER(S-FRER),以平衡可靠性和网络效率。S-FRER 还提供了 FlexE 组分配方案,用于沿路径分配灵活以太网通道。将端到端FRER(E-FRER)和有序FRER(O-FRER)两种启发式算法与S-FRER进行了比较。仿真结果表明,S-FRER可以满足业务多样化的可靠性要求,并且压缩了资源冗余和设备成本。进一步以资源利用效率为优化目标,提出了一种基于分段帧重复和帧重复的FlexE Group分配策略。消除,实现冗余路由上服务流的资源再分配。实验结果验证了该方案在资源利用效率方面的有效性。以平衡可靠性和网络效率。S-FRER 还提供了 FlexE 组分配方案,用于沿路径分配灵活以太网通道。将端到端FRER(E-FRER)和有序FRER(O-FRER)两种启发式算法与S-FRER进行了比较。仿真结果表明,S-FRER可以满足业务多样化的可靠性要求,并且压缩了资源冗余和设备成本。进一步以资源利用效率为优化目标,提出了一种基于分段帧重复和帧重复的FlexE Group分配策略。消除,实现冗余路由上服务流的资源再分配。实验结果验证了该方案在资源利用效率方面的有效性。以平衡可靠性和网络效率。S-FRER 还提供了 FlexE 组分配方案,用于沿路径分配灵活以太网通道。将端到端FRER(E-FRER)和有序FRER(O-FRER)两种启发式算法与S-FRER进行了比较。仿真结果表明,S-FRER可以满足业务多样化的可靠性要求,并且压缩了资源冗余和设备成本。进一步以资源利用效率为优化目标,提出了一种基于分段帧重复和帧重复的FlexE Group分配策略。消除,实现冗余路由上服务流的资源再分配。实验结果验证了该方案在资源利用效率方面的有效性。S-FRER 还提供了 FlexE 组分配方案,用于沿路径分配灵活以太网通道。将端到端FRER(E-FRER)和有序FRER(O-FRER)两种启发式算法与S-FRER进行了比较。仿真结果表明,S-FRER可以满足业务多样化的可靠性要求,并且压缩了资源冗余和设备成本。进一步以资源利用效率为优化目标,提出了一种基于分段帧重复和帧重复的FlexE Group分配策略。消除,实现冗余路由上服务流的资源再分配。实验结果验证了该方案在资源利用效率方面的有效性。S-FRER 还提供了 FlexE 组分配方案,用于沿路径分配灵活以太网通道。将端到端FRER(E-FRER)和有序FRER(O-FRER)两种启发式算法与S-FRER进行了比较。仿真结果表明,S-FRER可以满足业务多样化的可靠性要求,并且压缩了资源冗余和设备成本。进一步以资源利用效率为优化目标,提出了一种基于分段帧重复和帧重复的FlexE Group分配策略。消除,实现冗余路由上服务流的资源再分配。实验结果验证了该方案在资源利用效率方面的有效性。分别是端到端FRER(E-FRER)和有序FRER(O-FRER),与S-FRER进行比较。仿真结果表明,S-FRER可以满足业务多样化的可靠性要求,并且压缩了资源冗余和设备成本。进一步以资源利用效率为优化目标,提出了一种基于分段帧重复和帧重复的FlexE Group分配策略。消除,实现冗余路由上服务流的资源再分配。实验结果验证了该方案在资源利用效率方面的有效性。分别是端到端FRER(E-FRER)和有序FRER(O-FRER),与S-FRER进行比较。仿真结果表明,S-FRER可以满足业务多样化的可靠性要求,并且压缩了资源冗余和设备成本。进一步以资源利用效率为优化目标,提出了一种基于分段帧重复和帧重复的FlexE Group分配策略。消除,实现冗余路由上服务流的资源再分配。实验结果验证了该方案在资源利用效率方面的有效性。我们进一步以资源利用效率为优化目标,提出基于分段帧重复和消除的FlexE Group分配策略,实现冗余路由上业务流的资源再分配。实验结果验证了该方案在资源利用效率方面的有效性。我们进一步以资源利用效率为优化目标,提出基于分段帧重复和消除的FlexE Group分配策略,实现冗余路由上业务流的资源再分配。实验结果验证了该方案在资源利用效率方面的有效性。

更新日期:2022-08-24
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