Abstract The emerging cloud computing, IoT, bulk-data store-and-forward datacenter applications are dominating the Internet traffic, which contains the commercial and business data services and behaves periodically. The traffic peak remains high during a certain time each day (known as peak traffic hours). This results in heavy load on the network, leading to higher level of connections blocking. In order to handle such a critical situation in evolving multi-vendor/multi-operator based multi-domain optical networks (MDONs), prioritization of connection requests based on the differentiated class of service (CoS) is a must. The differentiated CoS (DiffCoS) may be categorized as: CoS1-delay-tolerant, CoS2-deadline-driven, and CoS3-fixed scheduled (or hard time bounded) traffic. To avail the maximum benefit of DiffCoS traffic characteristics, proper planning and efficient resource provisioning during admission phase is essential for the network service providers. A traffic scheduling strategy based on cost function (TSSCF) for DiffCoS in MDON is proposed, in which the connection requests are arranged in decreasing order of the cost function, and the route is selected based on shortest path minimum domain criterion, as per which the shortest route traversing or passing through the minimum number of domains is chosen. The simulations are performed on three-domain ARPANET topology, and the results are evaluated for different intra and inter-domain request ratios i.e., 1:1, 3:2 and 7:3, under 1:1:1 ratio of various CoSs. The simulation results of the proposed TSSCF strategy show significant improvement on the metric of blocking probability (BP), individual CoS BP, resource utilization ratio, and a newly introduced metric called revenue index as compared to the existing strategies.

中文翻译：

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一种基于成本函数的多域光网络差异化服务等级流量调度策略

摘要 新兴的云计算、物联网、大容量数据存储和转发数据中心应用主导着互联网流量，其中包含商业和商业数据服务并定期运行。交通高峰在每天的特定时间（称为高峰交通时间）保持高位。这会导致网络负载过重，从而导致更高级别的连接阻塞。为了在不断发展的基于多供应商/多运营商的多域光网络 (MDON) 中处理这种危急情况，必须根据差异化服务等级 (CoS) 对连接请求进行优先级排序。差异化 CoS (DiffCoS) 可以分类为：CoS1 延迟容忍、CoS2 截止日期驱动和 CoS3 固定调度（或硬时间限制）流量。为了最大限度地利用 DiffCoS 流量特性，在准入阶段进行适当的规划和有效的资源供应对于网络服务提供商来说至关重要。针对MDON中的DiffCoS，提出了一种基于代价函数(TSSCF)的流量调度策略，按照代价函数递减的顺序排列连接请求，并根据最短路径最小域准则选择路由。选择穿越或经过最少域的最短路径。模拟是在三域 ARPANET 拓扑上执行的，并针对不同的域内和域间请求比，即 1:1、3:2 和 7:3，在 1:1:1 的各种 CoS 比率下评估结果。所提出的 TSSCF 策略的仿真结果表明阻塞概率 (BP)、个体 CoS BP、