Advanced in Optical Network Control and Management
K. Long Beijing
W. Wei Dallas,
C. Wang (&) King of Prussia,
M. Daneshamand Middledown,
Optical networks are currently undergoing several attractive evolutions, ranging from 100G per channel transmission, integrated OTN-based WDM transmission and core switching, and flexible colorless/directionless/gridless ROADM to advanced control plane and management plane technologies. On the other hand, new services such as bandwidth virtualization and VPN impose new challenges to carriers, pushing them to rethink optical network design, planning, control and management issues. In order to support delivery of highly efficient packet services, highly reliable circuit services in emerging optical networks simultaneously, intelligent and automatic optical network design, planning, and control solutions are really important. This special issue features recent and emerging advances in optical networks control and management. Six papers were selected for publication, which cover topics including network reconfiguration control, multi-layer survivability, crosslayer fault-tolerant design, optical network virtualization, optical network real-time monitoring techniques, and network planning and operation tools.
The first article, Forward-Looking WDM Network Reconfiguration with
Per-Link Congestion Control, co-authored by Jing Wu, James Zhang, Gregor v.
Bochmann and Michel Savoie investigates the reconfigurations of
wavelengthrouted WDM networks in response to changes of lightpath demands, with the
objective of providing service to more lightpath demands without additional
network resources from a long-term network operation point of view. The proposed
model allows a natural separation between the operation of the optical layer and the
user traffic layer (predominantly the IP-layer. Simulation results show that by
properly controlling resource allocations in the current session using their proposed
mechanism, greatly reduces the rejections in future sessions.
Multi-layer optical protection and restoration is an interesting topic in
OTNbased WDM networks. The second article, Multilayer Protection with Availability
Guarantees in Optical WDM Networks, co-authored by Massimo Tornatore, Diego
Lucerna, Biswanath Mukherjee, Achille Pattavina investigates the problem of
survivable dynamic connection provisioning in the mesh backbone networks.
Differentiated services where connections may have different availability
requirements are assumed, and here protection (if needed) is provisioned based on
availability requirements and the current network state. The authors in this article
proposed new multilayer routing strategies that perform effective
availabilityguaranteed grooming of sub-wavelength connections. These strategies jointly
considered connection availability satisfaction and resource optimization and are
developed under two different practical hypotheses: guaranteed target, i.e., a
connection is routed only if its availability target is satisfied and best-effort target, a
connection is always routed and, when the availability target cannot be guaranteed,
the path with the best possible availability is provisioned. Numerical results are
reported and discussed for the two approaches mentioned above. In both cases, the
results show high effectiveness of their provisioning strategy.
The third article is about fault tolerant policy design in optical networks, titled
Cost Efficient Fault Tolerant Design in Mesh Optical Networks with the Load
Aware Method, co-authored by Ruyan Wang, Dapeng Wu, Sheng Huang, Keping
Long. The authors designed a set of cost efficient fault tolerant mechanisms. The
main objective is the minimization of the total number of required wavelengths.
Furthermore, based on the method of the Integer Linear Program (ILP), shared-path
protection and shared-link protection strategies are achieved, respectively.
Moreover, the objective of minimizing the load imbalance is used to ensure that the
network resources are utilized efficiently, and then the wavelength contention can
be mitigated by selecting the working path and backup path reasonably.
The next one, Adaptive Fault Monitoring in All-Optical Networks Utilizing
Real-Time Data Traffic, co-authored by Dong Shen, Kam-Hon Tse and Chun-Kit
Chan, proposed a novel fault detection and localization scheme for all-optical
networks with the information of real-time data traffic. The studied adaptive fault
localization framework is based on combining passive and proactive monitoring
solutions, together with adaptive management in two phases. Numerical results
indicate that the proposed scheme has good scalability, in terms of the number of
fault monitors required.
In the fifth one, A Cost Efficient Design of Virtual Infrastructures with Joint
Node and Link Mapping, co-authored by Hongfang Yu, Vishal Anand, Chunming
Qiao, Hao Di, Xuetao Wei, the authors studied the problem of cost efficient VI
mapping and proposed a novel approach called the virtual infrastructure mapping
algorithm (VIMA) that jointly considers node mapping and link mapping. Such a
close coordination between the link and node mapping stages increases the
efficiency of the VIMA algorithm. The authors also compared the performance of
the proposed VIMA algorithm with other VI mapping algorithms such as NSVIM,
vnmFlib and R-ViNE under various performance metrics using simulation. The
simulation results and analysis show that the VIMA algorithm outperforms the other
algorithms in terms of both VI mapping costs and path lengths of VI links.
The last article, DICONET NPOT: An Impairments Aware Tool for Planning
and Managing Dynamic Optical Networks, co-authored by Siamak Azodolmolky,
Panagiotis Kokkinos, Marianna Angelou, Emmanouel (Manos) Varvarigos, Ioannis
Tomkos, introduced a network planning and operation tool, called NPOT, which
supports physical layer impairment-aware network design. The architecture and
key building blocks including network description repositories, QoT estimator,
IA-RWA engines, component placement algorithms, and failure localization
modules were presented as well. More importantly, the authors also gave several
experimental results for NPOT, evaluating the performance of its impairment-aware
routing and wavelengths assignment engines.
Finally, we would like to take this opportunity to thank our reviewers for their
effort in reviewing the manuscripts. We also thank the Edit-in-Chief, Dr. Deep
Medhi for his supportive guidance during the entire process.
Mahmoud Daneshmand PhD, is a Distinguished Member of Technical Staff, AT&T Labs Research;
Executive Director of University Collaborations Program and Assistant Chief Scientist of the AT&T
Labs; Adjunct Professor of CS at the Stevens Institute of Technology. He has more than 35 years of
teaching, research & publications, and management experience in academia and industry including Bell
Laboratories, AT&T Labs, and University of California at Berkeley, University of Texas at Austin,
Tehran University, Sharif University of Technology, National University of Iran, New York University,
and Stevens Institute of Technology. He has published more than 80 journal/conference papers and book
chapters. Co-authored two books, and has given several keynote talks, and served as general chair and
TPC chair of many IEEE conferences. His current areas of teaching and research include Artificial
Intelligence; Knowledge Discovery and Data Mining; Complex Networks Analysis, Sensor Networks and
RFID Systems reliability & performance and data mining of sensor and RFID data. He has a PhD and MA
in Statistics from the University of California, Berkeley, and MS and BS in Mathematics from the
University of Tehran.
Chonggang Wang received his Ph.D. degree in computer science from Beijing University of Posts and
Telecommunications. He is currently with InterDigital Communications and previously conducted
research with NEC Laboratories America, AT&T Labs Research, and University of Arkansas, in different
areas including future Internet, machine-to-machine (M2M) communications, wireless networks, device/
network/service management, and Internet of Things (IoT). He (co-)authored more than 100 journal/
conference articles and book chapters. He has been on the editorial board for several journals including
IEEE Communications Magazine, IEEE Transactions on Service and Networks Management, and ACM/
Springer Wireless Networks Journal. He has served as chair/TPC member for numerous IEEE
conferences. He is a senior member of the IEEE.
Wei Wei is a staff R&D engineer at Huawei Technologies. Before joining Huawei, he had conducted
optical networking R&D work with Ciena Corporation and NEC Laboratories America. His research
interests include packet optical transport system, optical access, network design and optimization. He has
published more than 60 journal/conference articles and book chapters. He also has rich engineering
experiences in developing and designing broadband optical networks and IP networks. He is the holder of
three patents with five others pending. He has served as a TPC member for several IEEE conferences
including Globecom and ICC. He received his Ph.D. degree in electrical engineering from Shanghai Jiao
Tong University. He is a senior member of the IEEE.