Finding the target cost for sliceable bandwidth variable transponders
Finding the target cost for sliceable bandwidth variable transponders
复制标题
寻找可切片带宽可变转发器的目标成本
DOI：
--
复制
发表时间：
2014
期刊：
影响因子：
--
通讯作者：
J. Palacios
中科院分区：
文献类型：
--
作者：
V. López;Beatriz de la Cruz;Ó. D. Dios;O. Gerstel;N. Amaya;G. Zervas;D. Simeonidou;J. Palacios
弹性光网络（EON）是一种解决方案，它承诺通过实施具有小频谱时隙的灵活频谱分配来提高基础设施利用率，而不是当前密集波分复用部署的刚性50 GHz固定网格。这种新的EON灵活网格支持带宽可变转发器（BVT），可以动态调整其比特率和带宽，并在覆盖范围和容量之间进行权衡。然而，当BVT需要以低比特率传输时，它们的部分容量被浪费。因此，可切片带宽可变转发器（SBVT）已被提出，它可以提供更高水平的弹性和效率的网络。SBVT允许从一个点向多个目的地传输，根据需要改变每个目的地的流量速率和目的地的数量。这项工作的目的是确定400 Gb/s和1 Tb/s SBVT的目标成本，以减少至少50%，转发器成本在核心网络的情况下。该目标成本是相对于400 Gb/s和1 Tb/s（不可切片）的BVT的估计来计算的。根据我们的研究结果，到2020年，1 Tb/s转发器的成本节省50%是可行的，其成本高于不可切片转发器。在市场上出现1 Tb/s SBVT之前，400 Gb/s情况下的50%的节省在短期内是可能的。这种节省的可行性与目标成本高于目前的不可切片转发器表明，SBVT可以成为现实。此外，这项工作评估了由于SBVT的利用而节省的IP端口。
Elastic optical networking (EON) is a solution that promises to improve infrastructure utilization by implementing flexible spectrum allocation with small spectrum slots instead of the rigid 50 GHz fixed grid of current dense wavelength division multiplexing deployments. This new EON flexible grid supports bandwidth variable transponders (BVTs) that can tune their bit rate and bandwidth dynamically with a trade-off between reach and capacity. However, when BVTs need to transmit at low bit rates, part of their capacity is wasted. Therefore, the sliceable bandwidth variable transponder (SBVT) has been proposed, which can provide even higher levels of elasticity and efficiency to the network. SBVTs enable transmitting from one point to multiple destinations, changing the traffic rate to each destination and the number of destinations on demand. The aim of this work is to identify the target cost of 400 Gb/s and 1 Tb/s SBVTs to reduce, by at least 50%, transponder costs in a core network scenario. This target cost is calculated in relation to estimations for BVTs of 400 Gb/s and 1 Tb/s (non-sliceable). In light of our results, cost savings of 50% are feasible for 1 Tb/s transponders until 2020 with a higher cost than non-sliceable transponders. Savings of 50% for the 400 Gb/s case are possible in the short-term before 1 Tb/s SBVTs can appear in the market. Feasibility of such savings with a target cost higher than current non-sliceable transponders shows that SBVTs can be a reality. Moreover, this work assesses the IP port savings thanks to the utilization of the SBVTs.