Pub Date : 2012-04-17DOI: 10.1109/ONDM.2012.6210209
A. Pagès, J. Perelló, S. Spadaro, J. A. G. Espín, J. Riera, S. Figuerola
Optical network infrastructures can be partitioned into multiple parallel, dedicated virtual networks for a physical infrastructure sharing purpose. However, different transport technologies may impact in both the amount and the characteristics of the different virtual instances that can be built on top of a single physical infrastructure. To analyse the impact of the transport technology in this regard, we present exact Integer Linear Programming (ILP) formulations that address the off-line problem of optimally allocate a set of virtual networks in two kind of substrates: wavelength switching and spectrum switching. Both formulations serve the purpose to provide opaque transport services from the virtual network point of view, where electronic terminations are assumed in the virtual network nodes. We carry out a series of experiments to validate the presented formulations and determine which is the impact of both substrates in the number of virtual networks that can be optimally allocated in the transport network.
{"title":"Optimal allocation of virtual optical networks for the future internet","authors":"A. Pagès, J. Perelló, S. Spadaro, J. A. G. Espín, J. Riera, S. Figuerola","doi":"10.1109/ONDM.2012.6210209","DOIUrl":"https://doi.org/10.1109/ONDM.2012.6210209","url":null,"abstract":"Optical network infrastructures can be partitioned into multiple parallel, dedicated virtual networks for a physical infrastructure sharing purpose. However, different transport technologies may impact in both the amount and the characteristics of the different virtual instances that can be built on top of a single physical infrastructure. To analyse the impact of the transport technology in this regard, we present exact Integer Linear Programming (ILP) formulations that address the off-line problem of optimally allocate a set of virtual networks in two kind of substrates: wavelength switching and spectrum switching. Both formulations serve the purpose to provide opaque transport services from the virtual network point of view, where electronic terminations are assumed in the virtual network nodes. We carry out a series of experiments to validate the presented formulations and determine which is the impact of both substrates in the number of virtual networks that can be optimally allocated in the transport network.","PeriodicalId":151401,"journal":{"name":"2012 16th International Conference on Optical Network Design and Modelling (ONDM)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124052466","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-04-17DOI: 10.1109/ONDM.2012.6210189
G. A. Rodes, J. Olmos, F. Karinou, Ioannis Roudas, Lei Deng, Xiaodan Pang, I. Monroy
In this paper, we report on an experimental validation of dynamic distribution of wireless-over-fiber by employing optical switching using semiconductor optical amplifiers; the rest of the network was designed according to the channel distribution over the optical spectra required by the optical switch. An experimental validation was also conducted. The experiment consists of a four wavelength division multiplexed (WDM) channel system operating on a WiMax frequency band, and employing an orthogonal frequency-division multiplexing (OFDM) modulation at 625 Mbit/s per channel, transmission of the data over 20 km of optical fiber, and active switching in a one-by-sixteen active optical switch. The results show a negligible power penalty on each channel, for both the best and the worst case in terms of inter-channel crosstalk.
{"title":"Optical switching for dynamic distribution of wireless-over-fiber signals","authors":"G. A. Rodes, J. Olmos, F. Karinou, Ioannis Roudas, Lei Deng, Xiaodan Pang, I. Monroy","doi":"10.1109/ONDM.2012.6210189","DOIUrl":"https://doi.org/10.1109/ONDM.2012.6210189","url":null,"abstract":"In this paper, we report on an experimental validation of dynamic distribution of wireless-over-fiber by employing optical switching using semiconductor optical amplifiers; the rest of the network was designed according to the channel distribution over the optical spectra required by the optical switch. An experimental validation was also conducted. The experiment consists of a four wavelength division multiplexed (WDM) channel system operating on a WiMax frequency band, and employing an orthogonal frequency-division multiplexing (OFDM) modulation at 625 Mbit/s per channel, transmission of the data over 20 km of optical fiber, and active switching in a one-by-sixteen active optical switch. The results show a negligible power penalty on each channel, for both the best and the worst case in terms of inter-channel crosstalk.","PeriodicalId":151401,"journal":{"name":"2012 16th International Conference on Optical Network Design and Modelling (ONDM)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130707816","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-04-17DOI: 10.1109/ONDM.2012.6210207
J. Elbers, A. Autenrieth
Software-defined optical transceivers, a fully programmable optical express layer, and control plane-assisted network automation are key constituents of a new generation of optical core networks. This paper explains enabling technologies, reviews emerging applications, and discusses new questions arising for network design and modeling. It also examines the integration of the optical wavelength with the OTN and MPLS layers.
{"title":"From static to software-defined optical networks","authors":"J. Elbers, A. Autenrieth","doi":"10.1109/ONDM.2012.6210207","DOIUrl":"https://doi.org/10.1109/ONDM.2012.6210207","url":null,"abstract":"Software-defined optical transceivers, a fully programmable optical express layer, and control plane-assisted network automation are key constituents of a new generation of optical core networks. This paper explains enabling technologies, reviews emerging applications, and discusses new questions arising for network design and modeling. It also examines the integration of the optical wavelength with the OTN and MPLS layers.","PeriodicalId":151401,"journal":{"name":"2012 16th International Conference on Optical Network Design and Modelling (ONDM)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125596507","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-04-17DOI: 10.1109/ONDM.2012.6210188
E. Doumith, S. A. Zahr, M. Gagnaire
Thanks to recent advances in WDM technologies, an optical fiber is capable to carry up to 200 wavelengths operating at 40 Gbps each. In such high speed networks, service disruptions caused by network failures (e.g., fiber cut, amplifier dysfunction) may lead to high data losses. A network operator should be able to promptly locate such failures, in order to perform fast restoration. Hence, an efficient fault detection and localization mechanism is mandatory for reliable network design. In previous work, we have introduced the concept of monitoring-trees (m-trees) to achieve fast link failure detection and localization. We have proposed an integer linear programming (ILP) approach for the design of an m-tree solution that minimizes the number of required optical monitors, while achieving unambiguous failure detection and localization. In this paper, we propose a novel approach, based on the well known simulated annealing meta-heuristic, for the m-tree design in WDM networks. Simulations conducted in this study show the same results as the ILP approach at much lower computation time. Our proposal can thus be applied to large-sized and very large-sized networks.
{"title":"A novel meta-heuristic approach for optical monitoring-tree design in WDM networks","authors":"E. Doumith, S. A. Zahr, M. Gagnaire","doi":"10.1109/ONDM.2012.6210188","DOIUrl":"https://doi.org/10.1109/ONDM.2012.6210188","url":null,"abstract":"Thanks to recent advances in WDM technologies, an optical fiber is capable to carry up to 200 wavelengths operating at 40 Gbps each. In such high speed networks, service disruptions caused by network failures (e.g., fiber cut, amplifier dysfunction) may lead to high data losses. A network operator should be able to promptly locate such failures, in order to perform fast restoration. Hence, an efficient fault detection and localization mechanism is mandatory for reliable network design. In previous work, we have introduced the concept of monitoring-trees (m-trees) to achieve fast link failure detection and localization. We have proposed an integer linear programming (ILP) approach for the design of an m-tree solution that minimizes the number of required optical monitors, while achieving unambiguous failure detection and localization. In this paper, we propose a novel approach, based on the well known simulated annealing meta-heuristic, for the m-tree design in WDM networks. Simulations conducted in this study show the same results as the ILP approach at much lower computation time. Our proposal can thus be applied to large-sized and very large-sized networks.","PeriodicalId":151401,"journal":{"name":"2012 16th International Conference on Optical Network Design and Modelling (ONDM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129219926","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-04-17DOI: 10.1109/ONDM.2012.6210278
Timothy Entel, A. Gadkar, V. Vokkarane
In this paper we investigate the multicast advance reservation problem in wavelength division multiplexed (WDM) optical networks. Under the advance reservation traffic model (also know as scheduled traffic), connection requests specify their start time to be some time in the future and also specify their holding times. Traditionally, in WDM networks, the multicasting functionality is supported by assuming that the optical cross connects are multicast capable i.e., they are capable of switching an incoming signal to multiple output interfaces. To support the multicasting functionality in a multicast incapable (MI) network, one can use a naive approach of creating a virtual topology consisting of wavelength routes (lighpaths) from the multicast source to each destination of the multicast session. This approach tends to consume a lot of network bandwidth and may become unacceptable as the number of the multicast sessions increase. We refer to this approach of provisioning the multicast requests as Multicast via WDM Unicast (MVWU) approach. To efficiently provision the users' scheduled multicast requests in a MI network, we propose two overlay solutions: Drop at Member Node (DAMN) and Drop at Any Node (DAAN). In these solutions, we achieve multicasting by creating a set of lightpath routes (possibly multiple hops) in the overlay layer. We consider a static set of scheduled multicast requests and present integer linear programs (ILPs) to solve the DAMN and DAAN problems, with a goal to minimize the total number of wavelengths required to service the request set. We also present an efficient heuristic and compare its performance to the ILP for a small network, and evaluate its performance for large-scale networks. Moreover, we also present an ILP to solve the naive MVWU approach and compare its performance to the DAMN and DAAN.
{"title":"Scheduled multicast overlay for bandwidth-intensive applications","authors":"Timothy Entel, A. Gadkar, V. Vokkarane","doi":"10.1109/ONDM.2012.6210278","DOIUrl":"https://doi.org/10.1109/ONDM.2012.6210278","url":null,"abstract":"In this paper we investigate the multicast advance reservation problem in wavelength division multiplexed (WDM) optical networks. Under the advance reservation traffic model (also know as scheduled traffic), connection requests specify their start time to be some time in the future and also specify their holding times. Traditionally, in WDM networks, the multicasting functionality is supported by assuming that the optical cross connects are multicast capable i.e., they are capable of switching an incoming signal to multiple output interfaces. To support the multicasting functionality in a multicast incapable (MI) network, one can use a naive approach of creating a virtual topology consisting of wavelength routes (lighpaths) from the multicast source to each destination of the multicast session. This approach tends to consume a lot of network bandwidth and may become unacceptable as the number of the multicast sessions increase. We refer to this approach of provisioning the multicast requests as Multicast via WDM Unicast (MVWU) approach. To efficiently provision the users' scheduled multicast requests in a MI network, we propose two overlay solutions: Drop at Member Node (DAMN) and Drop at Any Node (DAAN). In these solutions, we achieve multicasting by creating a set of lightpath routes (possibly multiple hops) in the overlay layer. We consider a static set of scheduled multicast requests and present integer linear programs (ILPs) to solve the DAMN and DAAN problems, with a goal to minimize the total number of wavelengths required to service the request set. We also present an efficient heuristic and compare its performance to the ILP for a small network, and evaluate its performance for large-scale networks. Moreover, we also present an ILP to solve the naive MVWU approach and compare its performance to the DAMN and DAAN.","PeriodicalId":151401,"journal":{"name":"2012 16th International Conference on Optical Network Design and Modelling (ONDM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130992073","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-04-17DOI: 10.1109/ONDM.2012.6210219
O. Kipouridis, C. M. Machuca, A. Autenrieth, K. Grobe
In this paper we propose a novel planning tool for Next Generation Optical Access (NGOA) networks, based on real street maps. A Geographical Information System-based tool was developed that uses OpenStreetMap (OSM) raw data to extract the network topology. Aiming to reduce the total network deployment costs in a greenfield scenario, we propose a heuristic clustering algorithm for the assignment of Optical Network Units (ONUs) to access network port and a scheme that exploits conduit sharing to find the optimum cable distribution for the working and protection paths. Our model is used to compare several variants of WDM-based NGOA system concepts with respect to their equipment, energy consumption and infrastructure costs.
{"title":"Street-aware infrastructure planning tool for Next Generation Optical Access networks","authors":"O. Kipouridis, C. M. Machuca, A. Autenrieth, K. Grobe","doi":"10.1109/ONDM.2012.6210219","DOIUrl":"https://doi.org/10.1109/ONDM.2012.6210219","url":null,"abstract":"In this paper we propose a novel planning tool for Next Generation Optical Access (NGOA) networks, based on real street maps. A Geographical Information System-based tool was developed that uses OpenStreetMap (OSM) raw data to extract the network topology. Aiming to reduce the total network deployment costs in a greenfield scenario, we propose a heuristic clustering algorithm for the assignment of Optical Network Units (ONUs) to access network port and a scheme that exploits conduit sharing to find the optimum cable distribution for the working and protection paths. Our model is used to compare several variants of WDM-based NGOA system concepts with respect to their equipment, energy consumption and infrastructure costs.","PeriodicalId":151401,"journal":{"name":"2012 16th International Conference on Optical Network Design and Modelling (ONDM)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115327853","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-04-17DOI: 10.1109/ONDM.2012.6210194
A. Leiva, C. M. Machuca, A. Beghelli
This paper proposes a methodology to evaluate the total cost (CapEx and OpEx) of a migration process from a capacity-exhausted static WDM network to different capacity-upgraded alternatives. The methodology has been applied for evaluating and comparing two migration alternatives: maintaining static operation at increased bit rate and changing to dynamic operation with increased bit rate. Results show that the methodology not only allows selecting the lowest cost alternative, but also identifying key aspects driving the cost of the migration process. We expect this methodology can be used as a planning tool by network operators to select the most suitable migration alternative, considering different types of network operation, topologies, traffic demands and network architectures.
{"title":"Upgrading cost modelling of capacity-exhausted static WDM networks","authors":"A. Leiva, C. M. Machuca, A. Beghelli","doi":"10.1109/ONDM.2012.6210194","DOIUrl":"https://doi.org/10.1109/ONDM.2012.6210194","url":null,"abstract":"This paper proposes a methodology to evaluate the total cost (CapEx and OpEx) of a migration process from a capacity-exhausted static WDM network to different capacity-upgraded alternatives. The methodology has been applied for evaluating and comparing two migration alternatives: maintaining static operation at increased bit rate and changing to dynamic operation with increased bit rate. Results show that the methodology not only allows selecting the lowest cost alternative, but also identifying key aspects driving the cost of the migration process. We expect this methodology can be used as a planning tool by network operators to select the most suitable migration alternative, considering different types of network operation, topologies, traffic demands and network architectures.","PeriodicalId":151401,"journal":{"name":"2012 16th International Conference on Optical Network Design and Modelling (ONDM)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128392117","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-04-17DOI: 10.1109/ONDM.2012.6210277
Naohiro Wakabayashi, Y. Hirota, H. Tode, K. Murakami
Optical WDM networks are expected for future multimedia services. The multimedia services require stable connections with various length of holding time. While some multimedia services use optical path connections in only minute, other multimedia services use them in several hours. As network perspective, the overhead of connection setup has much influence in the case of short-term connections. On the other hand, longterm connections occupy assigned network resources for long periods. Thus, it is important to assign the appropriate wavelength considering the holding time. Furthermore, the network traffic is large and rapidly changes in time. Therefore, the method that accurately estimates the state of the current traffic and predicts the state of future traffic becomes more important. In this paper, we propose a novel traffic prediction method that can deal with large changes in traffic in optical WDM networks. The proposed prediction method is classified into two categories; “short-term traffic state estimation” and “longterm traffic trend prediction”. Traffic is predicted by using these two methods cooperatively and complementarily. We also propose a wavelength assignment method exploiting this traffic prediction. The proposed wavelength assignment method sets optical paths considering the prediction information and the holding time of connections. Each connection with different holding time is allocated wavelength resources in the limited range based on the traffic prediction information dynamically. We evaluate the performance of the proposed method by computer simulations and confirm that the proposed method can achieve better performance than the traditional method does.
{"title":"Traffic prediction based wavelength resource management considering holding time","authors":"Naohiro Wakabayashi, Y. Hirota, H. Tode, K. Murakami","doi":"10.1109/ONDM.2012.6210277","DOIUrl":"https://doi.org/10.1109/ONDM.2012.6210277","url":null,"abstract":"Optical WDM networks are expected for future multimedia services. The multimedia services require stable connections with various length of holding time. While some multimedia services use optical path connections in only minute, other multimedia services use them in several hours. As network perspective, the overhead of connection setup has much influence in the case of short-term connections. On the other hand, longterm connections occupy assigned network resources for long periods. Thus, it is important to assign the appropriate wavelength considering the holding time. Furthermore, the network traffic is large and rapidly changes in time. Therefore, the method that accurately estimates the state of the current traffic and predicts the state of future traffic becomes more important. In this paper, we propose a novel traffic prediction method that can deal with large changes in traffic in optical WDM networks. The proposed prediction method is classified into two categories; “short-term traffic state estimation” and “longterm traffic trend prediction”. Traffic is predicted by using these two methods cooperatively and complementarily. We also propose a wavelength assignment method exploiting this traffic prediction. The proposed wavelength assignment method sets optical paths considering the prediction information and the holding time of connections. Each connection with different holding time is allocated wavelength resources in the limited range based on the traffic prediction information dynamically. We evaluate the performance of the proposed method by computer simulations and confirm that the proposed method can achieve better performance than the traditional method does.","PeriodicalId":151401,"journal":{"name":"2012 16th International Conference on Optical Network Design and Modelling (ONDM)","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129670216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-04-17DOI: 10.1109/ONDM.2012.6210266
S. Lucente, R. P. Centelles, H. Dorren, N. Calabretta
We investigate the performance of an optical packet switch architecture with highly distributed control for interconnecting cluster switches in a data center environment. The optical packet switch under investigation can be scaled to a very large port count to interconnect a large number of cluster switches. Flow control is employed to regulate the packets transmission between the electronic buffers of the ingress and egress cluster switches. An important feature of the optical packet switch is that the switch can be re-configured in few nanoseconds regardless the port count. This is essential to minimize the end-to-end latency. Moreover, the limited contention resolution capability of the optical packet switch is compensated by the electronic buffers in the cluster switches. We numerically investigate the performance of an optical packet switch with 1024×1024 ports in terms of packet loss, throughput and latency in function of the electronic buffer capacity and number of retransmissions. Simulations results show that increasing the input buffer size allows for low packet loss at the expense of higher latency. On the contrary, limiting the number of retransmissions allows very low end-to-end latency but higher losses. For a system with 1024 in/out ports with a buffer size of 19 packets and a resend limit equal to 9, we obtain a packet loss lower than 10-3 and latency around 800 ns considering an input load of 0.5.
{"title":"Study of the performance of an optical packet switch architecture with highly distributed control in a data center environment","authors":"S. Lucente, R. P. Centelles, H. Dorren, N. Calabretta","doi":"10.1109/ONDM.2012.6210266","DOIUrl":"https://doi.org/10.1109/ONDM.2012.6210266","url":null,"abstract":"We investigate the performance of an optical packet switch architecture with highly distributed control for interconnecting cluster switches in a data center environment. The optical packet switch under investigation can be scaled to a very large port count to interconnect a large number of cluster switches. Flow control is employed to regulate the packets transmission between the electronic buffers of the ingress and egress cluster switches. An important feature of the optical packet switch is that the switch can be re-configured in few nanoseconds regardless the port count. This is essential to minimize the end-to-end latency. Moreover, the limited contention resolution capability of the optical packet switch is compensated by the electronic buffers in the cluster switches. We numerically investigate the performance of an optical packet switch with 1024×1024 ports in terms of packet loss, throughput and latency in function of the electronic buffer capacity and number of retransmissions. Simulations results show that increasing the input buffer size allows for low packet loss at the expense of higher latency. On the contrary, limiting the number of retransmissions allows very low end-to-end latency but higher losses. For a system with 1024 in/out ports with a buffer size of 19 packets and a resend limit equal to 9, we obtain a packet loss lower than 10-3 and latency around 800 ns considering an input load of 0.5.","PeriodicalId":151401,"journal":{"name":"2012 16th International Conference on Optical Network Design and Modelling (ONDM)","volume":"149 8‐10","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120836517","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-04-17DOI: 10.1109/ONDM.2012.6210193
C. K. Kallo, J. Dunne, R. Carley, Conor O'Malley, V. López, J. Palacios
In this paper the uncertainties and the implied level of risk associated with next-generation network architectures is modelled using Monte Carlo simulation, aimed at understanding network economics evolution. A high number of network parameters - like incremental network deployment, data centre location, network architecture, service mix, traffic growth and subscriber take-up - are modelled. A wide range of values is used for these parameters to gain understanding of their impact on network cost. Such an approach provides insight into the risk level undertaken by operators when building their network infrastructure based on a specific forecast. Thus, the core result of this analysis is that a sub-wavelength optical packet forwarding technology can de-risk network investments by 500% when compared to a next-generation IPoDWDM solution. Second, in a scaled network scenario the sub-wavelength solution also provides 150% capital savings. Finally, on the medium and long term the sub-wavelength approach yields a cost benefit for 99.8% of the configurations, when compared to an IPoDWDM architecture.
{"title":"Economic modelling of uncertain next-generation network evolution","authors":"C. K. Kallo, J. Dunne, R. Carley, Conor O'Malley, V. López, J. Palacios","doi":"10.1109/ONDM.2012.6210193","DOIUrl":"https://doi.org/10.1109/ONDM.2012.6210193","url":null,"abstract":"In this paper the uncertainties and the implied level of risk associated with next-generation network architectures is modelled using Monte Carlo simulation, aimed at understanding network economics evolution. A high number of network parameters - like incremental network deployment, data centre location, network architecture, service mix, traffic growth and subscriber take-up - are modelled. A wide range of values is used for these parameters to gain understanding of their impact on network cost. Such an approach provides insight into the risk level undertaken by operators when building their network infrastructure based on a specific forecast. Thus, the core result of this analysis is that a sub-wavelength optical packet forwarding technology can de-risk network investments by 500% when compared to a next-generation IPoDWDM solution. Second, in a scaled network scenario the sub-wavelength solution also provides 150% capital savings. Finally, on the medium and long term the sub-wavelength approach yields a cost benefit for 99.8% of the configurations, when compared to an IPoDWDM architecture.","PeriodicalId":151401,"journal":{"name":"2012 16th International Conference on Optical Network Design and Modelling (ONDM)","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134347308","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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