Architecture and Performance Evaluation of a Novel Optical Packet Switch with Input Concentrators
| Autor: | Yang Shuna, Yuhu Zhao, Hongzhen Yang, Ting Wang, Wanke Chen, Hao Chi, Mao Xiuwei, Zilu Fang |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Network packet
Computer science Node (networking) Aggregate (data warehouse) Function (mathematics) Markov model fiber delay line (FDL) optical packet switch (OPS) Atomic and Molecular Physics and Optics TA1501-1820 Optical Transport Network Packet loss packet loss ratio (PLR) Electronic engineering average packet delay Radiology Nuclear Medicine and imaging Applied optics. Photonics packet enhanced optical transport network (OTN) Architecture Instrumentation |
| Zdroj: | Photonics, Vol 8, Iss 510, p 510 (2021) Photonics Volume 8 Issue 11 |
| ISSN: | 2304-6732 |
| Popis: | In this paper, we propose a novel optical packet switch (OPS) architecture with input concentrators, which employ multi-input single-output optical buffers to aggregate all the incoming traffic into a small size switching fabric. Accordingly, the physical size, the number of the needed wavelength converters, and the economic cost of the total OPS node are decreased dramatically. However, the deployment of input concentrators introduces additional packet loss and delay, except from the contention at the switch output. A Markov model is presented to study the packet loss ratio (PLR) and average packet delay given by the input concentrators. The corresponding closed form expressions are given. The model also demonstrates that the system performance can be greatly improved by increasing the buffer size when the traffic load is not larger than 0.69315. The analytical values are compared with the simulation results. All the obtained results show that the proposed model provides satisfactory approximations under different network scenarios. Moreover, the economic cost savings of the proposed OPS node at the present time and its evolution as a function of time are also discussed in detail. The proposed architecture can also be applied in a packet enhanced optical transport network (OTN). |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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