Pub Date : 2014-11-01DOI: 10.1109/ICOCN.2014.6987094
N. Deng
With the drastically increasing traffic in optical backbone and metro networks, ultrahigh-capacity and cost-effective all-optical switching is anticipated. All-optical switching nodes based on 1×N wavelength selective switches (WSS's) are widely used in current optical networks. However, the existing architecture of multi-dimensional switching node based on 1×N WSS's is very complicated and costly. In this paper, we propose an N×N WSS architecture to tackle this problem, and address its optical design and application. Furthermore, we propose to introduce sub-wavelength-level all-optical switching technology into a network node or even the whole network, and demonstrate a petabit-scale switching node and a 100-Gb/s optical burst network, respectively.
{"title":"All-optical switching for 100-GB/S and beyond optical networks","authors":"N. Deng","doi":"10.1109/ICOCN.2014.6987094","DOIUrl":"https://doi.org/10.1109/ICOCN.2014.6987094","url":null,"abstract":"With the drastically increasing traffic in optical backbone and metro networks, ultrahigh-capacity and cost-effective all-optical switching is anticipated. All-optical switching nodes based on 1×N wavelength selective switches (WSS's) are widely used in current optical networks. However, the existing architecture of multi-dimensional switching node based on 1×N WSS's is very complicated and costly. In this paper, we propose an N×N WSS architecture to tackle this problem, and address its optical design and application. Furthermore, we propose to introduce sub-wavelength-level all-optical switching technology into a network node or even the whole network, and demonstrate a petabit-scale switching node and a 100-Gb/s optical burst network, respectively.","PeriodicalId":364683,"journal":{"name":"2014 13th International Conference on Optical Communications and Networks (ICOCN)","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131102565","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 : 2014-11-01DOI: 10.1109/ICOCN.2014.6987144
Bin Chen, DongHui Bao, Robert K. F. Teng, Minghua Tang, Xiao Lin, Mingjun Dai, Hui Wang
This paper discusses bi-objective optimization algorithms for energy efficient traffic grooming in a bandwidth constraint IP over WDM network. If the maximum network throughput is required for traffic grooming, the algorithms use the priori method to maximize the network throughput, and then to minimize the energy consumption afterwards. If the maximum network throughput is not required, the minimum energy consumption can be further reduced by blocking more connection requests. Simulation results show that the bi-objective algorithms can save more than five times of average energy consumption by blocking one IP connection request.
本文讨论了带宽受限IP over WDM网络中节能流量疏导的双目标优化算法。如果需要最大网络吞吐量进行流量疏导，则算法采用先验方法，首先将网络吞吐量最大化，然后再将能耗最小化。如果不需要最大网络吞吐量，可以通过阻塞更多的连接请求来进一步降低最小能耗。仿真结果表明，双目标算法通过阻断一个IP连接请求，可以节省5倍以上的平均能耗。
{"title":"Energy efficient traffic grooming in blocking IP over WDM networks","authors":"Bin Chen, DongHui Bao, Robert K. F. Teng, Minghua Tang, Xiao Lin, Mingjun Dai, Hui Wang","doi":"10.1109/ICOCN.2014.6987144","DOIUrl":"https://doi.org/10.1109/ICOCN.2014.6987144","url":null,"abstract":"This paper discusses bi-objective optimization algorithms for energy efficient traffic grooming in a bandwidth constraint IP over WDM network. If the maximum network throughput is required for traffic grooming, the algorithms use the priori method to maximize the network throughput, and then to minimize the energy consumption afterwards. If the maximum network throughput is not required, the minimum energy consumption can be further reduced by blocking more connection requests. Simulation results show that the bi-objective algorithms can save more than five times of average energy consumption by blocking one IP connection request.","PeriodicalId":364683,"journal":{"name":"2014 13th International Conference on Optical Communications and Networks (ICOCN)","volume":"159 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123018979","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 : 2014-11-01DOI: 10.1109/ICOCN.2014.6987127
Yangxiao Wang, Xin Li, Yongli Zhao, Jie Zhang
In this paper, we propose a novel re-restoration mechanism based on fuzzy fault set under multi-faults in optical transport networks. This new scheme inherits from our already proposed FFS (fuzzy fault set) based restoration mechanism which is a reasonable trade-off between the recovery success rate and the remaining network risk resources. We mainly consider the link faults in the simulation because link is likely to fail. The survival restoration scheme is divided into two phase: restoration phase and re-restoration phase. The re-restoration phase aims at restoring more DLPs (damaged light paths) by rerouting a small number of already established light paths. The proposed re-restoration mechanism can further improve recovery success rate which has been verified by simulations on the energy efficient multi-domain WSON (wavelength switched optical network) test bed.
{"title":"Multi-faults re-restoration algorithm based on fuzzy set theory in optical transport networks","authors":"Yangxiao Wang, Xin Li, Yongli Zhao, Jie Zhang","doi":"10.1109/ICOCN.2014.6987127","DOIUrl":"https://doi.org/10.1109/ICOCN.2014.6987127","url":null,"abstract":"In this paper, we propose a novel re-restoration mechanism based on fuzzy fault set under multi-faults in optical transport networks. This new scheme inherits from our already proposed FFS (fuzzy fault set) based restoration mechanism which is a reasonable trade-off between the recovery success rate and the remaining network risk resources. We mainly consider the link faults in the simulation because link is likely to fail. The survival restoration scheme is divided into two phase: restoration phase and re-restoration phase. The re-restoration phase aims at restoring more DLPs (damaged light paths) by rerouting a small number of already established light paths. The proposed re-restoration mechanism can further improve recovery success rate which has been verified by simulations on the energy efficient multi-domain WSON (wavelength switched optical network) test bed.","PeriodicalId":364683,"journal":{"name":"2014 13th International Conference on Optical Communications and Networks (ICOCN)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124618078","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 : 2014-11-01DOI: 10.1109/ICOCN.2014.6987139
Yang Su, Hui Li, Yuefeng Ji
Under the situation that the existing ODU rates were not efficient to meet the new requirement, this paper provides an optical network planning based on ODUflex to decrease the waste of bandwidth to solve this problem.
{"title":"A dynamic bandwidth planning algorithm based on ODUflex","authors":"Yang Su, Hui Li, Yuefeng Ji","doi":"10.1109/ICOCN.2014.6987139","DOIUrl":"https://doi.org/10.1109/ICOCN.2014.6987139","url":null,"abstract":"Under the situation that the existing ODU rates were not efficient to meet the new requirement, this paper provides an optical network planning based on ODUflex to decrease the waste of bandwidth to solve this problem.","PeriodicalId":364683,"journal":{"name":"2014 13th International Conference on Optical Communications and Networks (ICOCN)","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116317669","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 : 2014-11-01DOI: 10.1109/ICOCN.2014.6987147
Yuqi Fan, Zhao-Hui Cai, Zhang Tao
Improving the energy efficiency of optical networks is becoming popular amongst researchers, as well as service and network providers. In this paper, we tackle the problem of greening optical networks under scheduled traffic model with good resource used performance in terms of the number of wavelength-links used. We propose a power-aware routing and wavelength assignment (RWA) scheme to allow operators to tune the three factors of link distance, network device power consumption, and the resource used during RWA so that we can power off or sleep the network devices during periods of low utilization. Our simulation results have shown that the proposed algorithm is effective in terms of reducing the power consumption of the network devices, as well as the tradeoff between the power consumption of the network transport and the number of wavelength-links used.
{"title":"Greening optical networks under scheduled traffic model","authors":"Yuqi Fan, Zhao-Hui Cai, Zhang Tao","doi":"10.1109/ICOCN.2014.6987147","DOIUrl":"https://doi.org/10.1109/ICOCN.2014.6987147","url":null,"abstract":"Improving the energy efficiency of optical networks is becoming popular amongst researchers, as well as service and network providers. In this paper, we tackle the problem of greening optical networks under scheduled traffic model with good resource used performance in terms of the number of wavelength-links used. We propose a power-aware routing and wavelength assignment (RWA) scheme to allow operators to tune the three factors of link distance, network device power consumption, and the resource used during RWA so that we can power off or sleep the network devices during periods of low utilization. Our simulation results have shown that the proposed algorithm is effective in terms of reducing the power consumption of the network devices, as well as the tradeoff between the power consumption of the network transport and the number of wavelength-links used.","PeriodicalId":364683,"journal":{"name":"2014 13th International Conference on Optical Communications and Networks (ICOCN)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128763904","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 : 2014-11-01DOI: 10.1109/ICOCN.2014.6987149
Y. Wang, Junhua Qiu, Yu Zheng, Hengjian Tang, Xiaolu Zhang, Chao Pan, Xiaohan Sun
Preemptive-priority scheduling scheme based on M/M/n/m with different service ability of servers is proposed, in which arrival load of multiclass services increases proportionally and every service is able to choose a server with a certain probability. We set up the simulation model for understanding the transmission situation under various services and discuss in detail, which have been divided into 4 classes. The scheme reaches good performance with delay time of less than 15ms, average queuing length of less than 50 packets and packet loss rate lower than 0.01%. The results show that the scheme meet requirements upon real-time property and high reliability, which can be used to control traffic congestion effectively in Integrated Sensing Network.
{"title":"Multiple services scheduling scheme of service stratum in integrated sensing network","authors":"Y. Wang, Junhua Qiu, Yu Zheng, Hengjian Tang, Xiaolu Zhang, Chao Pan, Xiaohan Sun","doi":"10.1109/ICOCN.2014.6987149","DOIUrl":"https://doi.org/10.1109/ICOCN.2014.6987149","url":null,"abstract":"Preemptive-priority scheduling scheme based on M/M/n/m with different service ability of servers is proposed, in which arrival load of multiclass services increases proportionally and every service is able to choose a server with a certain probability. We set up the simulation model for understanding the transmission situation under various services and discuss in detail, which have been divided into 4 classes. The scheme reaches good performance with delay time of less than 15ms, average queuing length of less than 50 packets and packet loss rate lower than 0.01%. The results show that the scheme meet requirements upon real-time property and high reliability, which can be used to control traffic congestion effectively in Integrated Sensing Network.","PeriodicalId":364683,"journal":{"name":"2014 13th International Conference on Optical Communications and Networks (ICOCN)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122999909","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 : 2014-11-01DOI: 10.1109/ICOCN.2014.6987153
T. Dong, G. Shen
Optical networking techniques based on wavelength division multiplexing (WDM) ISLs and wavelength routing can allow bypass of the transit traffic significantly simplifying routing decisions and minimizing transmission delays. In IP over WDM optical satellite networks, the traffic demand of single users can be much lower than the capacity of an entire wavelength channel. Thus, efficient traffic grooming approaches that aggregate low-speed connections onto a high-capacity optical channel will significantly improve capacity utilization, reduce network cost and satellite mass. In this study, we apply different traffic grooming algorithms to create a lightpath virtual topology for the upper IP layer. We also investigate routing and wavelength assignment (RWA) algorithms for lightpath establishment in the optical layer. Results show that an algorithm with multi-hop grooming and waveplane-based RWA can not only significantly reduce the number of required wavelengths, but also ensure low end-to-end transmission delays of IP flows.
基于波分复用(WDM) isl和波长路由的光网络技术可以允许绕过传输业务，大大简化了路由决策并最小化了传输延迟。在IP over WDM光卫星网络中，单个用户的业务需求可能远远低于整个波长信道的容量。因此，将低速连接聚合到高容量光通道上的高效流量疏导方法将显著提高容量利用率，降低网络成本和卫星质量。在本研究中，我们应用不同的流量疏导算法为上层IP层创建光路虚拟拓扑。我们还研究了在光层建立光路的路由和波长分配(RWA)算法。结果表明，多跳修饰和基于波平面的RWA算法不仅可以显著减少所需波长的数量，而且可以保证IP流的端到端传输延迟较低。
{"title":"Traffic grooming for IP over WDM optical satellite networks","authors":"T. Dong, G. Shen","doi":"10.1109/ICOCN.2014.6987153","DOIUrl":"https://doi.org/10.1109/ICOCN.2014.6987153","url":null,"abstract":"Optical networking techniques based on wavelength division multiplexing (WDM) ISLs and wavelength routing can allow bypass of the transit traffic significantly simplifying routing decisions and minimizing transmission delays. In IP over WDM optical satellite networks, the traffic demand of single users can be much lower than the capacity of an entire wavelength channel. Thus, efficient traffic grooming approaches that aggregate low-speed connections onto a high-capacity optical channel will significantly improve capacity utilization, reduce network cost and satellite mass. In this study, we apply different traffic grooming algorithms to create a lightpath virtual topology for the upper IP layer. We also investigate routing and wavelength assignment (RWA) algorithms for lightpath establishment in the optical layer. Results show that an algorithm with multi-hop grooming and waveplane-based RWA can not only significantly reduce the number of required wavelengths, but also ensure low end-to-end transmission delays of IP flows.","PeriodicalId":364683,"journal":{"name":"2014 13th International Conference on Optical Communications and Networks (ICOCN)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131594155","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 : 2014-11-01DOI: 10.1109/ICOCN.2014.6987077
H. Zhao, Lijia Zhang, Bo Liu, Qi Zhang, Yongjun Wang, Qinghua Tian, Xiaoli Yin, X. Xin
We numerically simulate the influence of mode coupling and modal delay on the transmitted signal. Then we carry out adaptive signal processing with MIMO equalizers based on recursive least squares constant modulus algorithm (RLSCMA). The simulation results show that the distorted signals are restored efficiently with fast convergence speed.
{"title":"MIMO signal processing for mode division multiplexing with RLSCMA algorithm","authors":"H. Zhao, Lijia Zhang, Bo Liu, Qi Zhang, Yongjun Wang, Qinghua Tian, Xiaoli Yin, X. Xin","doi":"10.1109/ICOCN.2014.6987077","DOIUrl":"https://doi.org/10.1109/ICOCN.2014.6987077","url":null,"abstract":"We numerically simulate the influence of mode coupling and modal delay on the transmitted signal. Then we carry out adaptive signal processing with MIMO equalizers based on recursive least squares constant modulus algorithm (RLSCMA). The simulation results show that the distorted signals are restored efficiently with fast convergence speed.","PeriodicalId":364683,"journal":{"name":"2014 13th International Conference on Optical Communications and Networks (ICOCN)","volume":"125 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122247667","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 : 2014-11-01DOI: 10.1109/ICOCN.2014.6987134
Yixin Wang, B. Luo, L. Ong, S. Leong
A novel architecture on fiber-connected massively distributed antennas system (M-DAS) for providing a future-proof solution to deliver high data rates while extending the coverage of wireless networks is presented. The transparency of the fiber links to the various wireless signals allows for the simultaneous distribution of multiple services. Intermodulation distortions (IMDs) in directly modulator or external modulator limits the uplink dynamic range and downlink power efficiency in a ROF-based DAS, a digital AGC is used to adjust the uplink RF signal power to an acceptable dynamic range of optical modulator.
{"title":"Fiber-connected massively distributed antenna systems","authors":"Yixin Wang, B. Luo, L. Ong, S. Leong","doi":"10.1109/ICOCN.2014.6987134","DOIUrl":"https://doi.org/10.1109/ICOCN.2014.6987134","url":null,"abstract":"A novel architecture on fiber-connected massively distributed antennas system (M-DAS) for providing a future-proof solution to deliver high data rates while extending the coverage of wireless networks is presented. The transparency of the fiber links to the various wireless signals allows for the simultaneous distribution of multiple services. Intermodulation distortions (IMDs) in directly modulator or external modulator limits the uplink dynamic range and downlink power efficiency in a ROF-based DAS, a digital AGC is used to adjust the uplink RF signal power to an acceptable dynamic range of optical modulator.","PeriodicalId":364683,"journal":{"name":"2014 13th International Conference on Optical Communications and Networks (ICOCN)","volume":"112 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117244193","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 : 2014-11-01DOI: 10.1109/ICOCN.2014.6987114
Yu Zheng, Xu Zhou, M. Zhu, Hehong Fan, Xiaohan Sun, Junmin Wu, Gang Zhang, Xiaojian Zhang, Peng Wu
Master-slave switching nodes with three planes for power grid communications in substation based on software defined network are proposed. A FPGA-based control module and its relative management software as well as an experimental optical switching node are developed, and built, which have verified the switch, control and routing management for the optical switching node. The proposed scheme can realize the multicast/broadcast function with the features of protection redundancy using double optical fibres in bi-directions, high reliability and miniaturization.
{"title":"Master-slave switching nodes for power grid communications in substation based on software defined network","authors":"Yu Zheng, Xu Zhou, M. Zhu, Hehong Fan, Xiaohan Sun, Junmin Wu, Gang Zhang, Xiaojian Zhang, Peng Wu","doi":"10.1109/ICOCN.2014.6987114","DOIUrl":"https://doi.org/10.1109/ICOCN.2014.6987114","url":null,"abstract":"Master-slave switching nodes with three planes for power grid communications in substation based on software defined network are proposed. A FPGA-based control module and its relative management software as well as an experimental optical switching node are developed, and built, which have verified the switch, control and routing management for the optical switching node. The proposed scheme can realize the multicast/broadcast function with the features of protection redundancy using double optical fibres in bi-directions, high reliability and miniaturization.","PeriodicalId":364683,"journal":{"name":"2014 13th International Conference on Optical Communications and Networks (ICOCN)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123070902","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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