Resource allocation in space-division multiplexing-based elastic optical networks Alocação de recursos em redes ópticas elásticas baseadas em multiplexação por divisão espacial

Author(s):  
Silvana Trindade
2019 ◽  
Vol 8 (2S3) ◽  
pp. 1196-1199

Different examinations accept advised adjustable optical frameworks (EONs) with the purpose of developing the manual extreme alcove of focus frameworks. To accomplish this goal, it is capital to accord with the ambit ability diffusion affair brought about by ambit brokenness. Furthermore, due to the potentially top cartage demands in approaching frameworks, it is acute to administer requesting that care to be captivated agilely (quick reservation, IR) and as well those that can be absolved (early booking, AR). In frameworks that abetment the simultaneousness of IR and AR requests, IR advantage corruption by AR requests is aggravating affair back AR requests will all in all authority approaching resources, which makes a nonappearance of accepted assets accommodated IR inquires. As such, we abode the affair of ambit able and the alignment akin ascendancy of IR and AR requests by administering and ambit allocation (RSA).First, we abridge accompanying assay into EONs and ability appointment techniques for IR and AR inquires. Next, we adduce a atypical activating RSA action to abate ambit breach and ascendancy the alignment altitude of IR and AR requests in commendations to advice barter manual accommodation blocking probability(BBP) in EONs because the multiplexing aftereffect of spatial channels. Finally, we analysis the proposed adjustment accountable to PC proliferations and our after-effects authenticate that the proposed action can advance the BBP for the absolute cartage beck by abbreviating ambit irregularity, and also the alignment ascendancy of AR sales and IR requests beneath assorted framework conditions.


Author(s):  
Silvana Trindade ◽  
Nelson Luis Saldanha Da Fonseca

This paper presents the work developed in the MSc. thesis entitled ”Resource Allocation in Space-Division Multiplexing-Based Elastic Optical Networks” which explores the resource allocation problem in Space-Division Multiplexing-based Elastic Optical Networks (SDM-EON). The proposed algorithms jointly address spectrum fragmentation, modulation format, crosstalk, and energy consumption. Results demonstrate that our algorithms increase the acceptance of requests for lightpath establishment while handling energy consumption, spectrum fragmentation, energy consumption, load balance, and crosstalk.


2021 ◽  
Vol 174 ◽  
pp. 102887
Author(s):  
Ruijie Zhu ◽  
Aretor Samuel ◽  
Peisen Wang ◽  
Shihua Li ◽  
Bounsou Kham Oun ◽  
...  

Photonics ◽  
2021 ◽  
Vol 8 (10) ◽  
pp. 456
Author(s):  
Shengyu Zhang ◽  
Kwan Lawrence Yeung ◽  
Along Jin

We consider a space-division multiplexing elastic optical network (SDM-EON) that supports super-channels (SChs). A Sch comprises a set of contiguous frequency slots on multiple cores in a multi-core fiber. The problem of finding a lightpath using SChs involves routing, modulation, spectrum and core assignment (RMSCA). To minimize the request blocking probability (RBP), two critical issues must be addressed. First, routing and modulation assignment (RMA) should not cause hotspots, or overutilized links. Second, spectrum and core assignment (SCA) should aim at minimizing fragmentation, or small frequency slot blocks that can hardly be utilized by future requests. In this paper, a pre-computation method is first proposed for better load balancing in RMA. Then an efficient fragmentation-aware SCA is proposed based on a new fragmentation metric that measures both the spectral and spatial fragmentation. With the enhanced RMA and SCA, a joint load-balanced and fragmentation-aware algorithm called LBFA is designed to solve the RMSCA problem. As compared with the existing algorithms, simulation results show that our LBFA provides significant reduction in RBP.


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