Deterministic IP (DIP) networking is a promising technique that can provide delay-bounded transmission in large-scale networks. Nevertheless, DIP faces several challenges in the mixed traffic scenarios, including (i) the capability of ultra-low latency communications, (ii) the simultaneous satisfaction of diverse QoS requirements, and (iii) the network efficiency. The problems are more formidable in the dynamic surroundings without prior knowledge of traffic demands. To address the above-mentioned issues, this paper designs a flexible DIP (FDIP) network. In the proposed network, we classify the queues at the output port into multiple groups. Each group operates with different cycle lengths. FDIP can assign the time-sensitive flows with different groups, hence delivering diverse QoS requirements, simultaneously. The ultra-low latency communication can be achieved by specific groups with short cycle lengths. Moreover, the flexible scheduling with diverse cycle lengths improves resource utilization, hence increasing the throughput (i.e., the number of acceptable time-sensitive flows). We formulate a throughput maximization problem that jointly considers the admission control, transmission path selection, and cycle length assignment. A branch and bound (BnB)-based heuristic is developed. Simulation results show that the proposed FDIP significantly outperforms the standard DIP in terms of both the throughput and the latency guarantees.
翻译:确定性IP(DIP)网络是一个很有希望的技术,可以在大型网络中提供延迟的传输,然而,DIP在混合交通情况中面临若干挑战,包括:(一) 超低潜伏通信能力,(二) 同时满足不同的QOS要求,(三) 网络效率,这些问题在没有事先了解交通需求的情况下,在动态环境中更为严重。为了解决上述问题,本文件设计了一个灵活的DIP(FDIP)网络。在拟议的网络中,我们将产出港的排队分为多个组。每个组以不同周期长度运作。FDIP可以向不同组分配对时间敏感的流动,从而同时提供不同的QOS要求。超低潜伏通信可以由周期较短的特定组实现。此外,灵活地安排周期长度会提高资源利用,从而增加吞吐量(即可接受的时间敏感流量流量流量)。我们提出一个通过最大投入的问题,共同考虑接纳控制、传输路径选择和周期长度不同组。通过SIMIP(S-B)拟议的SIM-B(SIM-B)系列和周期分配结果。