The Advanced Communication Networks Laboratory, 2002 to 2026

1. Experimental Determination of Filter Bandwidth Requirements for Coherent Pluggable Transceivers in Optical Data Center Networks
   H. Rabbani, A. Rezaee, M. Brandt-Pearce, V. M. Vokkarane. 2026, conference, not yet in the CV

   Problem

   Filter narrowing penalizes coherent pluggables in data center links.

   Approach

   Experimental measurement of filter bandwidth requirements.

   Finding

   Quantifies passband needs for flexible-grid ROADMs.

   Data center and cloud networkinganalytical modelsimulationtestbed/experiment
2. FUSION: A Unified Benchmarking Framework for Reproducible Optical Network Research
   A. Rezaee, R. McCann, V. M. Vokkarane. 2026, journal

   Problem

   Optical network results are hard to reproduce.

   Approach

   FUSION as a unified benchmarking framework (journal).

   Finding

   Reproducible benchmarks for optical networking research.

   Tools and reproducibilityheuristicanalytical modelsimulationJPN12/48OMNeT++OpenAI Gym
3. QoT-Aware Dynamic Resource Allocation and Grooming in Multi-Band Space-Division Multiplexing Networks
   A. Rezaee, F. Arpanaei, R. McCann, H. Rabbani, J. Hernández, M. Brandt-Pearce, V. M. Vokkarane. 2026, journal

   Problem

   Dynamic allocation in multi-band SDM needs QoT awareness and grooming.

   Approach

   QoT-aware allocation and grooming (journal).

   Finding

   Grooming with QoT awareness improves capacity use.

   Elastic and SDM optical networksheuristicanalytical modelsimulationFUSION
4. QoT-Aware Spectral and Spatial Scaling Trade-offs in Multi-Band Space Division Multiplexing over EONs [Invited]
   A. Rezaee, F. Arpanaei, R. McCann, L. Nadal, J. A. Hernández, V. M. Vokkarane. 2026, journal

   Problem

   Scaling capacity spectrally or spatially.

   Approach

   QoT-aware trade-off study of multi-band versus SDM scaling (invited journal).

   Finding

   Quantifies when spectral versus spatial scaling pays off.

   Elastic and SDM optical networksmetaheuristicanalytical modelsimulationTorus/ring/mesh (synthetic)FUSION
5. Best Planning Practices for Ultra-High-Capacity Networks Based on Multi- Band over Space Division Multiplexing
   F. Arpanaei, A. Rezaee, M. Ranjbar Zefreh, R. McCann, L. Nadal, J. M. Rivas-Moscoso, Ó. González de Dios, A. Sánchez-Macián, D. Larrabeiti, V. M. Vokkarane, J. A. Hernández. 2025, conference

   Problem

   Planning ultra-high-capacity networks across bands and SDM.

   Approach

   Comparison of C, C+L, C+S, and C+L+S band plans over SDM.

   Finding

   C+L gives the best spectral efficiency; C+L+S gives the most capacity and lowest blocking.

   Elastic and SDM optical networksanalytical modelsimulation
6. Channel-Based ICXT- and NLI-Aware Service Provisioning for Multi-Band Over SDM Systems
   Arash Rezaee, Farhad Arpanaei, Ryan McCann, Hami Rabbani, José Alberto Hernandez, Maite Brandt-Pearce, Vinod M. Vokkarane. 2025, conference

   Problem

   Inter-core crosstalk and nonlinear noise in multi-band SDM.

   Approach

   Channel-based ICXT- and NLI-aware provisioning.

   Finding

   Accurate QoT-aware allocation for multi-band SDM.

   Elastic and SDM optical networksheuristicanalytical modelsimulationUSNETFUSION
7. Cyber Security Constrained Economic Dispatch for Resilient Power System Operation
   M. Z. Islam, Y. Lin, V. M. Vokkarane. 2025, conference

   Problem

   Economic dispatch ignores cyber network contingencies.

   Approach

   Cyber-security-constrained economic dispatch.

   Finding

   Dispatch that stays secure under cyber contingencies.

   Smart grid resilience and securitysimulationIEEE bus systemMATLABMATPOWER
8. Disaster-Resilient Cyber-Physical Distribution System Reconfiguration and Dynamic Networked Microgrid Formation under Intermittent Generation
   M. Z. Islam, Y. Lin, V. M. Vokkarane. 2025, journal

   Problem

   Distribution systems face high-impact, low-probability events.

   Approach

   Reconfiguration with dynamic networked microgrid formation (journal).

   Finding

   Faster recovery with intermittent generation.

   Smart grid resilience and securityILP/MILPheuristicsimulation
9. Exploring a Smart FDI Attack and Enhancing Anomaly Detection in Smart Meters
   M. Sasaninia, V. M. Vokkarane, Y. Lin, O. Arias. 2025, conference

   Problem

   Smart meter FDI detection assumes only power data.

   Approach

   A smarter FDI attack and improved anomaly detection.

   Finding

   Detection that catches attacks existing methods miss.

   Smart grid resilience and securitysimulationdeep learning
10. ISRS-Enhanced PLI-Aware Routing for Multi-Band Elastic Optical Networks
    A. Rezaee, R. McCann, H. Rabbani, M. Brandt-Pearce, V. M. Vokkarane. 2025, conference

    Problem

    Multi-band EONs suffer band-dependent impairments.

    Approach

    ISRS-aware, impairment-aware routing.

    Finding

    Better QoT-aware allocation across bands.

    Elastic and SDM optical networksheuristicanalytical modelsimulationPan-EuropeanOMNeT++
11. Learning to Slice: ML-Assisted Segmentation for Dynamic Resource Allocation in SDM-EONs
    A. Rezaee, R. McCann, V. M. Vokkarane. 2025, conference

    Problem

    Choosing slice sizes for crosstalk-aware allocation in SDM-EONs.

    Approach

    ML-assisted segmentation inside the SDN controller.

    Finding

    Learned slicing lowers blocking.

    Machine learning for networkssimulationPan-EuropeanFUSION
12. Modeling Nonlinear Noise for Arbitrary Pulse Shapes in Optical Fiber Communication Systems
    H. Rabbani, A. Rezaee, F. Arpanaei, V. M. Vokkarane, M. Brandt-Pearce. 2025, conference

    Problem

    Nonlinear noise models assume rectangular pulses.

    Approach

    Modulation-format-dependent model for arbitrary pulse shapes.

    Finding

    Extra nonlinear terms matter for non-rectangular pulses.

    Physical layer modeling
13. QoS-Based Recovery in 6G Optical Transport Networks: A Fast Service Prioritization Approach
    S. Soltani, A. Rezaee, O. Arias, V. M. Vokkarane. 2025, conference

    Problem

    6G transport must restore mission-critical services fast.

    Approach

    QoS-based service prioritization for recovery.

    Finding

    Faster recovery for high-priority services.

    Survivability and protectionILP/MILPheuristicsimulationTorus/ring/mesh (synthetic)OpenAI Gym
14. Rethinking Flexibility: When Fixed-Grid with Grooming Outperforms Flex-Grid in EONs
    A. Rezaee, F. Arpanaei, R. McCann, J. A. Hernández, V. M. Vokkarane. 2025, conference

    Problem

    Is flex-grid always better than fixed-grid?

    Approach

    Techno-economic comparison in super C-band SD-EONs, extending FUSION with grooming.

    Finding

    Fixed-grid with grooming can outperform flex-grid.

    Elastic and SDM optical networkssimulationFUSION
15. Dynamic Crosstalk-Aware Routing, Modulation, Core, and Spectrum Allocation for Sliceable Demands in SDM-EONs
    A. Rezaee, R. McCann, V. M. Vokkarane. 2024, conference

    Problem

    Crosstalk limits SDM-EON capacity for sliceable demands.

    Approach

    Dynamic crosstalk-aware routing, modulation, core, and spectrum allocation.

    Finding

    Lower blocking within crosstalk thresholds.

    Elastic and SDM optical networkssimulationreinforcement learningNSFNETUSNET
16. Enhancing Routing in SD-EONs through Reinforcement Learning: A Comparative Analysis
    R. McCann, A. Rezaee, V. M. Vokkarane. 2024, conference

    Problem

    Static routing in SD-EONs cannot adapt to real-time conditions.

    Approach

    Comparison of epsilon-greedy bandit, UCB bandit, and Q-learning routing.

    Finding

    Reinforcement learning routing is compared against traditional methods in FUSION.

    Machine learning for networksILP/MILPheuristicsimulationNSFNET
17. FUSION: A Flexible Unified Simulator for Intelligent Optical Networking
    Ryan McCann, Arash Rezaee, Vinod M. Vokkarane. 2024, conference

    Problem

    Optical network simulators are mostly closed source.

    Approach

    FUSION, an open-source simulator for software-defined elastic optical networks.

    Finding

    Open, extensible platform adopted for the group's later studies.

    Tools and reproducibilitysimulationreinforcement learningUSNETPan-EuropeanOMNeT++Stable-Baselines
18. Observability-Aware Resilient PMU Networking
    M. Z. Islam, Y. Lin, V. M. Vokkarane, J. Ogle. 2024, journal

    Problem

    PMU networks must keep the grid observable under failures.

    Approach

    Observability-aware resilient PMU networking framework (journal).

    Finding

    Fast, resilient PMU data transfer.

    Smart grid resilience and securityILP/MILPheuristicsimulationIEEE bus systemMATLAB
19. Reinforcement Learning-Based Observability-Aware Cyber Restoration of Power Grid
    S. N. Edib, V. M. Vokkarane, Y. Lin. 2024, conference, not yet in the CV

    Problem

    Cyber restoration is stochastic after disasters and attacks.

    Approach

    Reinforcement learning for observability-aware cyber restoration.

    Finding

    RL policies restore observability under uncertainty.

    Smart grid resilience and securityILP/MILPheuristicanalytical modelIEEE bus systemGurobi
20. A Scalable PDC Placement Technique for Fast and Resilient Monitoring of Large Power Grids
    M. Z. Islam, S. N. Edib, V. M. Vokkarane, Y. Lin, X. Fan. 2023, journal

    Problem

    Placing PDCs for fast, resilient monitoring of large grids.

    Approach

    Scalable PDC placement technique (journal).

    Finding

    Scales to large grids while keeping data transfer fast and resilient.

    Smart grid resilience and securityILP/MILPheuristicmetaheuristicIEEE bus systemMATLAB
21. Cyber Restoration of Power Systems: Concept and Methodology for Resilient Observability
    S. N. Edib, Y. Lin, V. M. Vokkarane, F. Qiu, R. Yao, B. Chen. 2023, journal

    Problem

    Cyber attacks on wide-area monitoring blind operators.

    Approach

    Cyber restoration concept and methodology for resilient observability (journal).

    Finding

    Defines cyber restoration as a planning problem.

    Smart grid resilience and securityILP/MILPheuristicsimulationIEEE bus systemGurobiMATLAB
22. Disaster-Resilient PMU Network Design
    S. N. Edib, Y. Lin, V. M. Vokkarane. 2023, conference

    Problem

    PMU networks must survive disasters.

    Approach

    Disaster-resilient PMU network design.

    Finding

    Designs that keep the grid observable after disasters.

    Smart grid resilience and securityILP/MILPmetaheuristicsimulationIEEE bus system
23. PLI-Aware Dynamic Routing in Software Defined Elastic Optical Networks (SD- EONs)
    A Rezaee, R McCann, VM Vokkarane. 2023, conference

    Problem

    SDN controllers route without full physical-layer awareness.

    Approach

    Load- and impairment-aware dynamic routing in SD-EONs.

    Finding

    Considering all metrics together lowers blocking.

    Elastic and SDM optical networkssimulationUSNETPan-EuropeanOMNeT++
24. Situation-Aware Load Restoration Considering Uncertainty and Correlation
    S. N. Edib, Y. Lin, V. M. Vokkarane, F. Qiu, Y. Zhang, P. Du. 2023, journal

    Problem

    Restoration after blackouts faces uncertain renewable and load patterns.

    Approach

    Situation-aware load restoration with uncertainty and correlation (journal).

    Finding

    More reliable restoration plans under uncertainty.

    Smart grid resilience and securityILP/MILPdeep learningIEEE bus system
25. and Y Lin, Cyber-Physical Reconfiguration for Disaster Resilience of Power Distribution Systems
    MZ Islam, VM Vokkarane. 2023, conference

    Problem

    Cyber and power interdependence makes distribution systems fragile.

    Approach

    Cyber-physical reconfiguration for disaster resilience.

    Finding

    Joint reconfiguration speeds recovery.

    Smart grid resilience and securityheuristicsimulationIEEE bus systemMATLAB
26. and Y Lin, PMU Network Routing for Resilient Observability of Power Grids
    MZ Islam, VM Vokkarane. 2023, conference

    Problem

    Routing PMU data resiliently.

    Approach

    PMU network routing for resilient observability.

    Finding

    Routing that keeps the grid observable under failures.

    Smart grid resilience and securityILP/MILPheuristicsimulationIEEE bus systemMATLAB
27. A Cross-Domain Optimization Framework of PMU and Communication Placement for Multi-Domain Resiliency and Cost Reduction
    S. N. Edib, Y. Lin, V. M. Vokkarane, X. Fan. 2022, journal

    Problem

    PMU placement and communication design are done separately.

    Approach

    Cross-domain optimization of PMU and communication placement (journal).

    Finding

    Improves multi-domain resiliency at lower cost.

    Smart grid resilience and securityILP/MILPmetaheuristicsimulationIEEE bus systemGurobiMATLAB
28. Performance Comparison of Machine Learning Methods in DDoS Attack Detection in Smart Grids
    E. Meriaux, D. Koehler, M. Z. Islam, V. Vokkarane, Y. Lin. 2022, conference

    Problem

    Detecting DDoS attacks in smart grids.

    Approach

    Comparison of machine learning detectors.

    Finding

    Identifies which methods detect DDoS best.

    Smart grid resilience and securitysimulation
29. Static multi-sourced data retrieval in elastic optical networks
    J. Zhao, V. Vokkarane. 2022, journal

    Problem

    Retrieving data held at several sources in EONs.

    Approach

    Static multi-sourced data retrieval formulation and heuristics (journal).

    Finding

    Efficient many-to-one retrieval plans.

    Elastic and SDM optical networksILP/MILPheuristicmetaheuristicNSFNET
30. Light-segment: Crosstalk and Modulation-Aware Spectrum Allocation with Segmentation in SDM-EON
    Yue Wang, Vinod M. Vokkarane. 2020, conference

    Problem

    Resource exhaustion in SDM elastic optical networks.

    Approach

    Crosstalk- and modulation-aware spectrum allocation with request segmentation.

    Finding

    Segmentation lowers blocking while respecting crosstalk limits.

    Elastic and SDM optical networkssimulationNSFNET
31. Optimal PMU Restoration for Power System Observability Recovery After Massive Attacks
    S.N. Edib, Y. Lin, V.M. Vokkarane, F. Qiu, R. Yao, D. Zhao. 2020, journal

    Problem

    Regaining grid situational awareness after massive cyber attacks.

    Approach

    Optimal sequential restoration of PMUs (journal).

    Finding

    Restoration order recovers observability quickly.

    Smart grid resilience and securityILP/MILPheuristicmetaheuristicIEEE bus systemMATLAB
32. PMU and Communication Infrastructure Restoration for Post-Attack Observability Recovery of Power Grids
    S. N. Edib, Y. Lin, V. M. Vokkarane, F. Qiu, R. Yao. 2020, conference, not yet in the CV

    Problem

    Observability after attacks needs both PMUs and their communications back.

    Approach

    Joint PMU and communication infrastructure restoration.

    Finding

    Joint restoration recovers observability faster than restoring either alone.

    Smart grid resilience and securityILP/MILPheuristicmetaheuristicIEEE bus system
33. Failure-Aware Protection for Many-to-Many Routing in Content Centric Networks
    Dylan AP Davis, V.M. Vokkarane. 2019, journal

    Problem

    Disasters take out many links and nodes at once.

    Approach

    Failure-aware protection for many-to-many routing using content-centric caching (journal).

    Finding

    On-path caching plus precomputed backups improves reliability.

    Survivability and protectionheuristicmetaheuristicsimulationGurobi
34. A New Deep Learning-based Food Recognition System for Dietary Assessment on an Edge Computing Service Infrastructure
    C. Liu, Y. Cao, Y. Luo, G. Chen, V.M. Vokkarane, Y. Ma, S. Chen, P. Hou. 2018, journal

    Problem

    Dietary assessment relies on memory.

    Approach

    Deep-learning food recognition on an edge computing service.

    Finding

    Accurate recognition with edge offloading.

    Edge computing and IoTdeep learningtestbed/experiment
35. Analytical Blocking Model for Generalized Light-tree in Optical WDM Networks
    Yan Cui, Vinod M. Vokkarane. 2018, conference

    Problem

    Blocking of generalized light-trees had no model.

    Approach

    Analytical blocking model for generalized manycast.

    Finding

    Model predicts manycast blocking.

    Manycast and anycastanalytical modelsimulationNSFNET
36. Co-Scheduling Scientific Workflows in Elastic Optical Networks
    Anisha Joseph, Jeremy Plante, Juzi Zhao, Vinod M. Vokkarane. 2018, conference

    Problem

    Workflows need compute, storage, and network together.

    Approach

    Co-scheduling scientific workflows in EONs.

    Finding

    Joint scheduling improves completion.

    Advance reservation and schedulingheuristicsimulationNSFNET
37. Delayed Wavelength Switching and Allocation in Optical Networks
    Pegah Afsharlar, Jeremy Plante, Arash Deylamsalehi, Vinod M. Vokkarane. 2018, conference

    Problem

    Flexible lightpath scheduling in deployed WDM networks.

    Approach

    Delayed wavelength switching and allocation.

    Finding

    Lowers blocking for advance reservation.

    Advance reservation and schedulingILP/MILPheuristicNSFNET
38. Generalized Survivability Models for Many-to-Many Communication
    D.A.P. Davis, V.M. Vokkarane. 2018, conference

    Problem

    Survivability models are inflexible and resource hungry.

    Approach

    Generalized survivability models for many-to-many communication.

    Finding

    Protection applicable across routing types with fewer resources.

    Survivability and protectionILP/MILPheuristicNSFNET
39. Scheduled Lightpath Switching with Spatio-Spectral Resource Affinity
    J.M. Plante, V.M. Vokkarane. 2018, conference

    Problem

    Extreme-scale reservations leave fragmented time and spectrum unused.

    Approach

    Scheduled lightpath switching with spatio-spectral resource affinity.

    Finding

    Better use of fragmented resources raises utilization.

    Advance reservation and schedulingheuristicsimulationNSFNETUSNET
40. Using Machine Learning to Balance Energy Cost and Emissions in Optical Networks
    Arash Deylamsalehi, Dylan AP Davis, Pegah Afsharlar, Mehdi Bahrami, Wei-Peng Chen, Vinod M. Vokkarane. 2018, journal

    Problem

    Minimizing electricity alone does not reduce environmental impact.

    Approach

    Machine learning to balance energy cost and emissions in RWA (journal).

    Finding

    Balances operating cost against emissions.

    Energy and carbon-aware networkingILP/MILPsimulationgame theoryNSFNETUSNETGurobi
41. Dynamic Checkpointing Policy in Heterogeneous Real-Time Standby Systems
    G. Levitin, L. Xing, Y. Dai, V. M. Vokkarane. 2017, journal

    Problem

    Checkpointing in heterogeneous real-time standby systems.

    Approach

    Dynamic checkpointing policy.

    Finding

    Improves mission reliability within time limits.

    Reliability modelingheuristicsimulation
42. Electricity Cost and Emissions Reduction in Optical Networks
    Arash Deylamsalehi, Pegah Afsharlar, Vinod M. Vokkarane. 2017, conference

    Problem

    Reducing electricity alone does not cut environmental impact.

    Approach

    RWA that shifts consumption across power markets.

    Finding

    Reduces both cost and emissions.

    Energy and carbon-aware networkingILP/MILPheuristicNSFNETGurobi
43. Enhancing ESnet's OSCARS Path Computation Engine
    D.A.P. Davis, J.M. Plante, E Chaniotakis, C Guok, V Sundarrajan , B Tierney, I Monga, V.M. Vokkarane. 2017, conference

    Problem

    OSCARS path computation limits.

    Approach

    Enhanced path computation engine for OSCARS.

    Finding

    Extends a scheduler used by the science community for over a decade.

    Advance reservation and schedulingESnet backboneOSCARS
44. Minimizing Electricity Cost and Emissions in Optical Data Center Networks
    Arash Deylamsalehi, Yan Cui, Pegah Afsharlar, Vinod M. Vokkarane. 2017, journal

    Problem

    Routing ignores location-dependent prices and emissions in data center networks.

    Approach

    Cost- and emissions-aware routing (journal).

    Finding

    Considerable cost and emission reductions for operators.

    Energy and carbon-aware networkingILP/MILPanalytical modelsimulationNSFNETUSNET
45. Multi-Source Data Retrieval in Groomed Elastic Optical Networks
    Juzi Zhao, Vinod M. Vokkarane. 2017, conference

    Problem

    Retrieving data stored at multiple sites in groomed EONs.

    Approach

    Multi-source data retrieval with grooming.

    Finding

    Improves retrieval efficiency.

    Elastic and SDM optical networksheuristicsimulationNSFNET
46. Reliability Modeling of Mesh Storage Area Networks for Internet of Things
    L Xing, M Tannous, V.M. Vokkarane, H Wang, J Guo. 2017, journal

    Problem

    Reliable storage for Internet of Things data.

    Approach

    Reliability model of mesh storage area networks.

    Finding

    Quantifies storage availability for IoT.

    Reliability modelinganalytical model
47. Reverse Manycast Data Retrieval in Elastic Optical Networks
    Juzi Zhao, Vinod M. Vokkarane. 2017, conference

    Problem

    Retrieving petascale data from distributed sites.

    Approach

    Reverse manycast data retrieval in EONs.

    Finding

    Flexible many-to-one retrieval service.

    Elastic and SDM optical networksILP/MILPheuristicsimulationNSFNET
48. Routing and Spectrum Assignment with Delayed Allocation in Elastic Optical Networks
    Pegah Afsharlar, Arash Deylamsalehi, J. Plante, Juzi Zhao, Vinod M. Vokkarane. 2017, journal

    Problem

    Provisioning and allocation in elastic optical networks.

    Approach

    RSA with delayed allocation (journal).

    Finding

    Delayed allocation lowers blocking.

    Elastic and SDM optical networksILP/MILPheuristicsimulationNSFNET
49. Sequential and Parallel Scheduling of Dynamic Bandwidth-Intensive Scientific Workflows in Elastic Optical Networks
    Juzi Zhao, Anisha Joseph, Vinod M. Vokkarane. 2017, conference

    Problem

    Workflows of dependent tasks need network and compute co-scheduling.

    Approach

    Sequential and parallel scheduling in EONs.

    Finding

    Parallel scheduling shortens workflow completion.

    Advance reservation and schedulingILP/MILPheuristicsimulationNSFNET
50. Sliding Scheduled Lightpath Establishment with Time-Slotted Wavelength Switching
    J.M. Plante, Vinod M. Vokkarane. 2017, journal

    Problem

    Massive science transfers with flexible windows.

    Approach

    Sliding scheduled lightpaths with time-slotted wavelength switching (journal).

    Finding

    Journal version; flexible scheduling lowers blocking.

    Advance reservation and schedulingILP/MILPheuristicmetaheuristicNSFNETUSNETGurobiOSCARS
51. Spatially and Spectrally Flexible Lightpath Scheduling
    Jeremy Plante, Vinod M. Vokkarane. 2017, conference

    Problem

    Multi-wavelength resources alone will not carry growing workflows.

    Approach

    Spatially and spectrally flexible lightpath scheduling.

    Finding

    Flexible allocation carries larger transfers.

    Advance reservation and schedulingILP/MILPheuristicsimulationNSFNET
52. Spatially and Spectrally Flexible Scheduling With Time-Slotted Lightpath-Switching
    J. M. Plante, V. M. Vokkarane. 2017, journal, not yet in the CV

    Problem

    Scheduling massive transfers across wavelengths and time.

    Approach

    Spatially and spectrally flexible scheduling with lightpath switching (journal).

    Finding

    Journal version of flexible scheduling.

    Advance reservation and schedulingILP/MILPheuristicNSFNETGurobi
53. Analytical Blocking Model for Anycast RWA in Optical WDM Networks
    Y. Cui, Vinod M. Vokkarane. 2016, journal

    Problem

    Analytical blocking for anycast RWA.

    Approach

    Analytical model (journal).

    Finding

    Journal version validated against simulation.

    Manycast and anycastanalytical modelsimulation
54. Delayed Spectrum Allocation for Advance Reservation in Elastic Optical Networks
    Pegah Afsharlar, Jeremy Plante, Arash Deylamsalehi, Juzi Zhao, Vinod M. Vokkarane. 2016, conference

    Problem

    Advance reservation RSA in elastic optical networks.

    Approach

    Delayed spectrum allocation.

    Finding

    Delaying allocation lowers blocking in EONs.

    Elastic and SDM optical networksILP/MILPheuristicsimulationNSFNET
55. Delayed Spectrum Allocation for Anycast Advance Reservation with Flexible Window in Elastic Optical Networks
    Pegah Afsharlar, Arash Deylamsalehi, Vinod M. Vokkarane. 2016, conference

    Problem

    Anycast advance reservation with flexible windows in EONs.

    Approach

    Delayed spectrum allocation for anycast.

    Finding

    Flexible windows plus delayed allocation reduce blocking.

    Elastic and SDM optical networksILP/MILPheuristicsimulationNSFNET
56. Dynamic Erasure-coded Data Retrieval in Elastic Optical Data Center Networks
    Juzi Zhao, Vinod M. Vokkarane. 2016, conference

    Problem

    Erasure-coded data retrieval over elastic optical networks.

    Approach

    Dynamic retrieval algorithms aware of modulation reach.

    Finding

    Efficient retrieval of coded data across data centers.

    Data center and cloud networkingheuristicsimulationNSFNET
57. Modeling Energy Costs and Emissions for Anycast RWA in Optical Data Center Networks
    Arash Deylamsalehi, Pegah Afsharlar, Vinod M. Vokkarane. 2016, conference

    Problem

    Operating cost and pollution of data center networks.

    Approach

    Energy-cost and emissions-aware anycast RWA.

    Finding

    Reduces operating expenditure and emissions.

    Energy and carbon-aware networkinganalytical modelsimulationNSFNETUSNETOSCARS
58. Real-Time Energy Price-Aware Anycast RWA in Optical Data Center Networks
    Arash Deylamsalehi, Pegah Afsharlar, Vinod M. Vokkarane. 2016, conference

    Problem

    Real-time electricity pricing across data center locations.

    Approach

    Price-aware anycast RWA to replicas.

    Finding

    Lowers electricity cost of serving replicated data.

    Energy and carbon-aware networkingsimulationNSFNETESnet backboneOSCARS
59. Resource Survivability for Multicast in Elastic Optical Networks
    Dylan A.P. Davis, Vinod M. Vokkarane. 2016, conference

    Problem

    Loss of a multicast destination in elastic optical networks.

    Approach

    ILP for resource survivability in multicast RSA.

    Finding

    Survivable multicast with efficient spectrum.

    Survivability and protectionILP/MILPheuristicmetaheuristicESnet backboneGurobiOSCARS
60. A Study of Online Social Network Privacy Via the TAPE Framework
    Yongbo Zeng, Yan Sun, L. Xing, V. M. Vokkarane. 2015, journal

    Problem

    Quantifying privacy risk in online social networks.

    Approach

    TAPE trust-aware privacy evaluation (journal).

    Finding

    Journal version of the TAPE framework.

    Online social network privacyheuristicsimulationtestbed/experimentMATLAB
61. Analytical Blocking Probability Model for Anycast RWA in Optical WDM Networks
    Yan Cui, Vinod M. Vokkarane. 2015, conference

    Problem

    Blocking of anycast RWA had no analytical model.

    Approach

    Analytical blocking model for anycast RWA.

    Finding

    Model predicts anycast blocking and matches simulation.

    Manycast and anycastanalytical modelsimulationNSFNETESnet backbone
62. Critical Resource Multicast Protection in Data Center Networks
    Dylan A.P. Davis, Vinod M. Vokkarane. 2015, conference

    Problem

    Failures of critical data center resources, not just links.

    Approach

    Critical-resource multicast protection.

    Finding

    Protects multicast against resource failures in data center networks.

    Survivability and protectionheuristicsimulationESnet backbone
63. Reducing Greenhouse Gas Emissions with Power Source Aware Multi-Domain Multi-Layer Networks
    Thilo Schöndienst, Vinod M. Vokkarane. 2015, journal

    Problem

    Grooming location and power source drive emissions in multi-domain networks.

    Approach

    Power-source-aware multi-domain, multi-layer design (journal).

    Finding

    Lowers greenhouse gas emissions.

    Energy and carbon-aware networkingILP/MILPheuristicsimulationGermanTorus/ring/mesh (synthetic)
64. Reliability Based Optimization in Hybrid Wireless Sensor Networks
    A.E. Zonouz, L. Xing, V. M. Vokkarane, Y. Sun. 2015, conference

    Problem

    Hybrid sensor networks trade reliability against cost.

    Approach

    Reliability-based optimization.

    Finding

    Optimizes hybrid WSN design for reliability.

    Wireless sensor and access networksmetaheuristicsimulation
65. Sliding Scheduled Lightpath Establishment for Time-Continuous Demands with Slotted Wavelength-Switching
    Jeremy Plante, Vinod M. Vokkarane. 2015, conference

    Problem

    Periodic transfers have flexible windows, not fixed start times.

    Approach

    Sliding scheduled lightpath establishment with slotted wavelength switching.

    Finding

    Flexible windows lower blocking for time-continuous demands.

    Advance reservation and schedulingILP/MILPheuristicsimulationNSFNETGurobi
66. Static Protection Against Single Multicast Resource Failure
    Dylan A.P. Davis, Vinod M. Vokkarane. 2015, conference

    Problem

    Multicast trees lose data when a destination resource fails.

    Approach

    Static protection against single multicast resource failure.

    Finding

    Protects multicast destinations with modest extra resources.

    Survivability and protectionILP/MILPheuristicsimulationNSFNETGurobi
67. A Phased-Mission Framework for Communication Reliability in WSN
    C. Wang, L. Xing, V. M. Vokkarane, Y. Sun. 2014, conference

    Problem

    Communication reliability across mission phases.

    Approach

    Phased-mission reliability framework for WSNs.

    Finding

    Captures phase-dependent reliability.

    Wireless sensor and access networks
68. A Time-Dependent Link Failure Model for Wireless Sensor Networks
    A.E. Zonouz, L. Xing, V. M. Vokkarane, Y. Sun. 2014, conference

    Problem

    Link failures in sensor networks vary over time.

    Approach

    Time-dependent link failure model.

    Finding

    Links reliability to energy consumption over time.

    Wireless sensor and access networkssimulationTorus/ring/mesh (synthetic)
69. Dynamic continuous and Non-Continuous advance reservation in SLICE networks
    B. H. Ramaprasad, T. Schöndienst, V. M. Vokkarane. 2014, conference

    Problem

    Advance reservation in spectrum-sliced elastic optical networks.

    Approach

    Continuous and non-continuous advance reservation in SLICE networks.

    Finding

    Non-continuous allocation lowers blocking.

    Elastic and SDM optical networksheuristicsimulationNSFNET
70. Manycast Overlay in Split-Incapable Networks for Supporting Bandwidth-Intensive Applications
    J. Plante, A. Gadkar, V.M. Vokkarane. 2014, journal

    Problem

    Distributing large scientific datasets to many sites without optical splitting.

    Approach

    Manycast overlay algorithms for split-incapable networks (journal).

    Finding

    Overlays support bandwidth-intensive manycast in unicast-only networks.

    Manycast and anycastILP/MILPheuristicsimulationNSFNETUSNETCPLEX
71. Multi-Domain Grooming in Power Source Aware Networks
    Thilo Schöndienst, Vinod M. Vokkarane. 2014, conference

    Problem

    Where energy-intensive O-E-O grooming happens affects energy source mix.

    Approach

    Power-source-aware multi-domain grooming.

    Finding

    Placing grooming at renewably powered nodes lowers emissions.

    Energy and carbon-aware networkingILP/MILPheuristicsimulationUSNETGerman
72. Parallel Circuit Provisioning in ESnet's OSCARS
    Jeremy M. Plante, Dylan A.P. Davis, Vinod M. Vokkarane. 2014, conference

    Problem

    OSCARS serializes transfers that could run in parallel.

    Approach

    Parallel circuit provisioning in ESnet's OSCARS.

    Finding

    Parallel circuits shorten large transfers on a production research network.

    Advance reservation and schedulingheuristictestbed/experimentESnet backboneOSCARS
73. Real-time Energy Price Aware Network Routing
    Arash Deylamsalehi, Thilo Schöndienst, Vinod M. Vokkarane. 2014, conference

    Problem

    Routing ignores location-dependent real-time electricity prices.

    Approach

    Real-time energy-price-aware routing.

    Finding

    Reduces operators' electricity cost.

    Energy and carbon-aware networkingheuristicsimulationNSFNETUSNET
74. Reliability-Oriented Single-Path Routing Protocols in Wireless Sensor Networks
    A. E. Zonouz, L. Xing, V. M. Vokkarane, Y. Sun. 2014, journal

    Problem

    Reliability of single-path routing in sensor networks.

    Approach

    Reliability-oriented single-path routing protocols (journal).

    Finding

    Protocols chosen for reliability outperform conventional ones in harsh settings.

    Wireless sensor and access networksheuristicsimulationdeep learning
75. Renewable Energy-Aware Manycast Overlays
    T. Schöndienst, D.A.P. Davis, J.M. Plante, V.M. Vokkarane. 2014, journal

    Problem

    Manycast overlays consume energy and emit greenhouse gases.

    Approach

    Renewable-energy-aware manycast overlay (journal).

    Finding

    Cuts energy use and emissions relative to the baseline overlay.

    Energy and carbon-aware networkingILP/MILPheuristicsimulationUSNETESnet backbone
76. Renewable energy-aware grooming in IP-over-WDM networks
    T. Schöndienst, V. M. Vokkarane. 2014, conference

    Problem

    Electronic grooming is energy intensive.

    Approach

    Heuristics that move O-E-O grooming to renewably powered nodes.

    Finding

    Reduces non-renewable energy use in IP-over-WDM.

    Energy and carbon-aware networkingheuristicsimulationNSFNET
77. Slotted Advance Reservation for Multicast-Incapable Optical WDM Networks
    A. Gadkar, T. Entel, J.M. Plante, Vinod M. Vokkarane. 2014, journal

    Problem

    Scheduled multicast in multicast-incapable networks.

    Approach

    Slotted advance reservation algorithms (journal).

    Finding

    Journal treatment of slotted scheduled multicast overlays.

    Advance reservation and schedulingILP/MILPheuristicsimulationNSFNETUSNETCPLEX
78. Trust-Aware Privacy Evaluation in Online Social Networks
    Yongbo Zeng, Yan Sun, L. Xing, V. M. Vokkarane. 2014, conference

    Problem

    Users lack a way to quantify privacy risk.

    Approach

    Trust-aware privacy evaluation framework.

    Finding

    Quantifies user privacy risk in social networks.

    Online social network privacysimulationtestbed/experimentMATLAB
79. Analytical Blocking Probability Model for Hybrid Immediate and Advance Reservations in Optical WDM Networks
    J. Triay, C. Cervello-Pastor, V.M. Vokkarane. 2013, journal

    Problem

    Blocking with mixed immediate and advance reservations.

    Approach

    Analytical blocking probability model (journal).

    Finding

    Model tracks simulation for hybrid reservation traffic.

    Advance reservation and schedulinganalytical modelsimulationESnet backboneOSCARS
80. Application Communication Reliability of Wireless Sensor Networks Supporting K-coverage
    A. E. Zonouz, L. Xing, V. M. Vokkarane, Y. Sun. 2013, conference

    Problem

    Reliability of sensor data delivery under k-coverage.

    Approach

    Application communication reliability model.

    Finding

    Quantifies reliability for k-coverage applications.

    Wireless sensor and access networksanalytical modelsimulation
81. Deadline-Aware Co-Scheduling Using Anycast Advance Reservations in Wavelength Routed Lambda Grids
    H. Kulkarni, A.G. Gadkar, V.M. Vokkarane. 2013, conference

    Problem

    Co-scheduling compute and network with deadlines in lambda grids.

    Approach

    Deadline-aware anycast advance reservation.

    Finding

    Anycast flexibility helps meet deadlines.

    Advance reservation and schedulingILP/MILPheuristicmetaheuristicNSFNETUSNET
82. Energy Source-Aware Manycast Overlay in WDM Networks
    Thilo Schöndienst, Jeremy M. Plante, Dylan A.P. Davis, Vinod M. Vokkarane. 2013, conference

    Problem

    Manycast overlays ignore where power comes from.

    Approach

    Energy source-aware manycast overlay.

    Finding

    Steering to renewably powered nodes cuts emissions.

    Energy and carbon-aware networkingILP/MILPheuristicsimulationUSNETESnet backbone
83. Improving Service Differentiation of Immediate and Advance Reservation in Resource-Partitioned Optical WDM Networks
    D. Rousseau, J. Triay, V.M. Vokkarane. 2013, conference

    Problem

    Immediate and advance reservations compete for resources.

    Approach

    Resource partitioning for service differentiation.

    Finding

    Partitioning improves differentiation between reservation types.

    Advance reservation and schedulingsimulationNSFNETESnet backbone
84. Reducing the Environmental Impact of Optical Networks
    T. Schöndienst, V. M. Vokkarane. 2013, conference

    Problem

    Lowering energy use does not guarantee lower environmental impact.

    Approach

    Configuring optical networks to favor renewable-powered nodes.

    Finding

    Smart configuration reduces environmental impact.

    Energy and carbon-aware networkingILP/MILPheuristicanalytical modelUSNETGermanOSCARS
85. Reliability Modeling of Wireless Sensors
    C. Wang, L. Xing, V.M. Vokkarane, Y. Sun. 2013, conference

    Problem

    Realistic reliability of individual wireless sensors.

    Approach

    Sensor node reliability modeling.

    Finding

    Better failure parameter estimation for sensor reliability.

    Wireless sensor and access networksanalytical model
86. Static Manycast Advance Reservation in Split-Incapable Optical Networks
    T. Entel, A.G. Gadkar, V.M. Vokkarane. 2013, conference

    Problem

    Scheduled manycast in split-incapable networks.

    Approach

    Static manycast advance reservation algorithms.

    Finding

    Supports scheduled transfers to multiple sites.

    Advance reservation and schedulingILP/MILPheuristicsimulationNSFNETUSNET
87. A Survey of Advance Reservation Routing and Wavelength Assignment in Wavelength- Routed WDM Networks
    N. Charbonneau, V.M. Vokkarane. 2012, journal

    Problem

    Advance reservation RWA literature is scattered.

    Approach

    Survey of advance reservation routing and wavelength assignment.

    Finding

    Taxonomy of advance reservation methods for WDM.

    Advance reservation and schedulingILP/MILPheuristicmetaheuristicUSNETESnet backboneOSCARS
88. Dual Power Source Aware Algorithms for Green Optical Network Survivability
    M. Boddie, T. Schöndienst, V. M. Vokkarane. 2012, conference

    Problem

    Survivability and emissions are usually optimized separately.

    Approach

    Dual power-source-aware algorithms for green survivability.

    Finding

    Reduces emissions while keeping competitive availability.

    Energy and carbon-aware networkingILP/MILPheuristicsimulationUSNET
89. Dynamic Advance Reservation Multicast Overlay for Slotted Optical WDM Networks
    T. Entel, A.G. Gadkar, V.M. Vokkarane. 2012, conference

    Problem

    Scheduled multicast in multicast-incapable, time-slotted networks.

    Approach

    Dynamic advance reservation multicast overlay.

    Finding

    Overlay supports scheduled multicast without optical splitting.

    Advance reservation and schedulingheuristicsimulationNSFNETESnet backbone
90. Dynamic Manycasting in Optical Split-Incapable WDM Networks for Supporting High-Bandwidth Applications
    J. Plante, A.G. Gadkar, V.M. Vokkarane. 2012, conference

    Problem

    Manycast in split-incapable WDM networks.

    Approach

    Dynamic manycast overlay algorithms.

    Finding

    Supports high-bandwidth manycast without splitters.

    Manycast and anycastheuristicsimulationNSFNETESnet backbone
91. Dynamic Non-Continuous Single Slot Advance Reservation over Wavelength Routed Networks
    B. H. Ramaprasad, A. Somani, V.M. Vokkarane. 2012, conference

    Problem

    Single-slot advance reservation fragments resources.

    Approach

    Two-phase non-continuous single-slot routing, slot, and wavelength assignment.

    Finding

    Allowing non-continuous slots lowers blocking.

    Advance reservation and schedulingheuristicsimulationNSFNET
92. Linear Cryptanalysis of A Survivable Data Transmission Mechanism for Sensor Networks
    R. Ma, L. Xing, H. E. Michel, V.M. Vokkarane. 2012, conference

    Problem

    Security of a survivable data transmission scheme for sensors.

    Approach

    Linear cryptanalysis of the mechanism.

    Finding

    Assesses resistance to linear cryptanalysis.

    Wireless sensor and access networks
93. Multicast Overlay for High-Bandwidth Application Over Optical WDM Networks
    A.G. Gadkar, J. Plante, V.M. Vokkarane. 2012, journal

    Problem

    Multicast assumes multicast-capable crossconnects.

    Approach

    Multicast overlay over unicast-only WDM (journal).

    Finding

    Overlay supports high-bandwidth multicast efficiently.

    Advance reservation and schedulingILP/MILPheuristicsimulationNSFNETUSNETCPLEX
94. On Extending ESnet's OSCARS with a Multi-Domain Anycast Service
    M. Boddie, T. Entel, C. Guok, A. Lake, J.M. Plante, E. Pouyoul, B.H. Ramaprasad, B. Tierney, J. Triay, V.M. Vokkarane. 2012, conference

    Problem

    ESnet's OSCARS provisioned only unicast circuits.

    Approach

    Anycast path computation for OSCARS.

    Finding

    Extends a production research-network scheduler to anycast.

    Manycast and anycastsimulationUSNETESnet backboneOSCARS
95. Reliability Study of Wireless Sensor Networks with Different Network Topology Characteristics
    C. Wang, L. Xing, V. M. Vokkarane, Y. Sun. 2012, conference

    Problem

    How topology shapes sensor network reliability.

    Approach

    BDD-based infrastructure communication reliability versus topology metrics.

    Finding

    Relates reliability to connectivity, path length, degree, and clustering.

    Wireless sensor and access networks
96. Scheduled Multicast Overlay for Bandwidth-Intensive Applications
    T. Entel, A. Gadkar, V.M. Vokkarane. 2012, conference

    Problem

    Scheduled multicast in unicast WDM networks.

    Approach

    Scheduled multicast overlay.

    Finding

    Supports advance-reservation multicast without splitting.

    Advance reservation and schedulingILP/MILPheuristicsimulationNSFNETESnet backboneCPLEX
97. Static Routing and Wavelength Assignment for Multicast Advance Reservation in All- Optical Wavelength-Routed WDM Networks
    N. Charbonneau, V.M. Vokkarane. 2012, journal

    Problem

    Static multicast advance reservation RWA.

    Approach

    RWA methods for multicast advance reservation (journal).

    Finding

    Journal treatment of static multicast advance reservation.

    Advance reservation and schedulingILP/MILPheuristicmetaheuristicNSFNETUSNETCPLEX
98. A Framework for Real-Time Monitoring of Acoustic Events Using a Wireless Sensor Network
    A. Dhawan, R. Balasubramanian, V.M. Vokkarane. 2011, conference

    Problem

    Real-time acoustic event monitoring.

    Approach

    Wireless sensor network framework for acoustic monitoring.

    Finding

    Architecture for low-cost acoustic surveillance.

    Wireless sensor and access networkstestbed/experiment
99. Advance Reservation Frameworks in Hybrid IP-WDM Networks
    N. Charbonneau, V.M. Vokkarane, C. Gouk, I. Monga. 2011, journal

    Problem

    E-science needs guaranteed, scheduled bandwidth on optical networks.

    Approach

    Advance reservation frameworks for hybrid IP-WDM networks (magazine).

    Finding

    Overview of reservation frameworks for research networks.

    Advance reservation and schedulingheuristicsimulationUSNETESnet backboneOSCARS
100. Analytical Model for Hybrid Immediate and Advance Reservation in Optical WDM Networks
     J. Triay, C. Cervello-Pastor, V.M. Vokkarane. 2011, conference

     Problem

     Immediate and advance reservations share one network.

     Approach

     Analytical model for hybrid immediate and advance reservation.

     Finding

     Model predicts blocking for mixed reservation traffic.

     Advance reservation and schedulinganalytical modelsimulation
101. Dynamic Advance Reservation with Delayed Allocation over Wavelength- Routed Networks
     A. Somani, V.M. Vokkarane, B.H. Ramaprasad. 2011, conference

     Problem

     Advance reservation fragments wavelength time slots.

     Approach

     Routing, slot, and wavelength assignment with delayed allocation.

     Finding

     Delaying allocation avoids fragmentation and lowers blocking (later patented).

     Advance reservation and schedulingheuristicsimulationNSFNET
102. Dynamic Anycast Routing and Wavelength Assignment in WDM Networks Using Ant Colony Optimization (ACO)
     K. Bhaskaran, J. Triay, V.M. Vokkarane. 2011, conference

     Problem

     Dynamic anycast RWA in WDM networks.

     Approach

     Ant colony optimization.

     Finding

     ACO lowers blocking at the cost of longer setup and overhead.

     Manycast and anycastmetaheuristicsimulationNSFNET
103. Dynamic Anycasting over Wavelength Routed Networks with Lightpath Switching
     B. H. Ramaprasad, A.G. Gadkar, V.M. Vokkarane. 2011, conference

     Problem

     Dynamic anycast with holding-time-aware lightpaths.

     Approach

     Anycast combined with lightpath switching.

     Finding

     Lightpath switching lowers anycast blocking.

     Manycast and anycastheuristic
104. Dynamic Service-Aware Reservation Framework for Multi- Layer High-Speed Networks
     J. Triay, D. Rousseau, C. Cervello-Pastor, V.M. Vokkarane. 2011, conference

     Problem

     Delay-sensitive and delay-tolerant services share multi-layer networks.

     Approach

     Service-aware reservation framework mixing immediate and advance reservations.

     Finding

     Differentiates connection-level service across request types.

     Advance reservation and schedulingheuristicsimulation
105. Load-Aware Anycast Routing in IP-over-WDM Networks
     B.G. Bathula, V.M. Vokkarane, C.P. Lai, K. Bergman. 2011, conference

     Problem

     IP traffic variation in reconfigurable WDM networks.

     Approach

     Load-aware and impairment-aware anycast routing in IP-over-WDM.

     Finding

     Load awareness significantly improves anycast performance in simulation.

     Manycast and anycastheuristicsimulationNSFNETGENI
106. Manycasting: Energy-Efficient Multicasting in WDM Optical Unicast Networks
     A.G. Gadkar, J. Plante, V.M. Vokkarane. 2011, conference

     Problem

     Multicast in unicast-only WDM networks wastes energy.

     Approach

     Manycasting as an energy-efficient variant of multicasting.

     Finding

     Manycast overlays cut energy use.

     Energy and carbon-aware networkingILP/MILPheuristicsimulationNSFNETUSNET
107. Coordinated Multi-Layer Loss Recovery in TCP over Optical Burst- Switched (OBS) Networks
     R.R.C. Bikram, N. Charbonneau, V.M. Vokkarane. 2010, conference

     Problem

     Random burst losses trigger TCP slow start without real congestion.

     Approach

     Coordinated loss recovery across the TCP and OBS layers.

     Finding

     Coordination avoids needless window cuts and raises throughput.

     TCP over OBSanalytical modelsimulation
108. Crosstalk-Aware Anycast Routing and Wavelength Assignment in Optical WDM Networks
     B.G. Bathula, J. Plante, V.M. Vokkarane. 2010, conference

     Problem

     Anycast in transparent optical networks must meet signal quality.

     Approach

     Crosstalk-aware anycast routing and wavelength assignment.

     Finding

     Impairment awareness lowers blocking for anycast requests.

     Manycast and anycastheuristicmetaheuristicsimulationNSFNET
109. Dynamic Circuits with Lightpath Switching over Wavelength Routed Networks
     N. Charbonneau, V.M. Vokkarane. 2010, conference

     Problem

     Holding-time-aware circuits keep one lightpath for the whole transfer.

     Approach

     Lightpath switching: a transfer may move across lightpaths over time.

     Finding

     Lightpath switching improves resource use and lowers blocking.

     Advance reservation and schedulingheuristicsimulationNSFNET
110. Multicast Advance Reservation RWA Heuristics in Wavelength-Routed Networks
     N. Charbonneau, V.M. Vokkarane. 2010, conference

     Problem

     Static multicast advance reservation in wavelength-routed WDM.

     Approach

     RWA heuristics for multicast advance reservation.

     Finding

     Heuristics reduce wavelength use for scheduled multicast.

     Advance reservation and schedulingILP/MILPheuristicmetaheuristicNSFNETUSNET
111. Performance Evaluation of TCP over Optical Burst Switched (OBS) Networks using Coordinated Burst Cloning and Forward-Segment Redundancy
     J. Sullivan, N. Charbonneau, V.M. Vokkarane. 2010, conference

     Problem

     Contention losses at low load hurt TCP over OBS.

     Approach

     Coordinated burst retransmission evaluated for TCP.

     Finding

     Burst-level retransmission improves TCP throughput and latency.

     TCP over OBSsimulationns-2
112. QoS-Aware Cross-Layer Multicasting for Optical Packet-Switched Networks: Simulation Exploration and Test-Bed Demonstration
     C.P. Lai, B.G. Bathula, V.M. Vokkarane, K. Bergman. 2010, conference

     Problem

     QoS multicasting in optical packet-switched fabrics.

     Approach

     Cross-layer multicast routing studied by simulation and on a 10x10 Gb/s wavelength-striped testbed.

     Finding

     Experimental demonstration of cross-layer multicast on a switching testbed.

     Optical packet switchingsimulationtestbed/experimentNSFNETGENI
113. QoS-Based Manycasting Over Optical Burst-Switched (OBS) Networks
     B.G. Bathula, V.M. Vokkarane. 2010, journal

     Problem

     Multicast fails if any member cannot be served; manycast needs QoS.

     Approach

     QoS-based manycasting algorithms over OBS (journal).

     Finding

     Manycasting meets QoS with lower loss than multicast.

     Manycast and anycastheuristicanalytical modelsimulationNSFNET
114. Quality of Transmission Aware Manycasting Over Optical Burst-Switched (OBS) Networks
     B.G. Bathula, R.R.C. Bikram, V.M. Vokkarane, S. Talabattula. 2010, journal

     Problem

     Physical-layer quality limits manycast over OBS.

     Approach

     Quality-of-transmission-aware manycasting (journal).

     Finding

     QoT awareness lowers loss from impairments.

     Manycast and anycastsimulationNSFNET
115. Routing and Wavelength Assignment of Static Manycast Demands over All-Optical Wavelength-Routed WDM Networks
     N. Charbonneau, V.M. Vokkarane. 2010, journal

     Problem

     Routing static manycast demands in all-optical WDM networks.

     Approach

     ILP plus heuristics for manycast routing and wavelength assignment (journal).

     Finding

     Heuristics approach ILP results with far less computation.

     Manycast and anycastILP/MILPheuristicmetaheuristicNSFNETUSNETCPLEX
116. Tabu Search Meta-Heuristic for Static Manycast Routing and Wavelength Assignment over Wavelength-Routed Optical WDM Networks
     N. Charbonneau, V.M. Vokkarane. 2010, conference

     Problem

     Minimizing wavelengths for static manycast RWA.

     Approach

     Tabu search metaheuristic.

     Finding

     Tabu search outperforms simple multicast heuristics.

     Manycast and anycastILP/MILPheuristicmetaheuristicNSFNETUSNET
117. Dynamic Load-Balanced Manycasting over Optical Burst-Switched (OBS) Networks
     R.R.C. Bikram, V.M. Vokkarane. 2009, conference

     Problem

     Contention loss for manycast in OBS.

     Approach

     Congestion-based load-balanced manycast routing.

     Finding

     Improves blocking probability and end-to-end delay.

     Manycast and anycastsimulationNSFNET
118. MASCOT: Manycast Architecture for Service-Oriented Tactical Applications
     N. Charbonneau, V.M. Vokkarane, R. Balasubramanian. 2009, conference

     Problem

     Tactical operations need to reach any subset of command centers.

     Approach

     MASCOT manycast architecture for the U.S. Marine Corps.

     Finding

     Service-oriented manycast for tactical networks.

     Manycast and anycastheuristicmetaheuristicsimulation
119. Static Manycast Routing and Wavelength Assignment over Wavelength-Routed Optical WDM Networks
     N. Charbonneau, V.M. Vokkarane. 2009, conference

     Problem

     Static manycast demands over wavelength-routed WDM.

     Approach

     Manycast routing and wavelength assignment minimizing wavelengths.

     Finding

     Heuristics reduce wavelengths needed.

     Manycast and anycastILP/MILPheuristicsimulationNSFNETUSNET
120. TCP over Optical Burst-Switched (OBS): To Split or Not To Split?
     R.R.C. Bikram, V.M. Vokkarane. 2009, journal

     Problem

     TCP over hybrid IP/OBS networks.

     Approach

     Split-TCP evaluation (journal).

     Finding

     Journal version of split versus end-to-end TCP over OBS.

     TCP over OBSanalytical modelsimulationNSFNETTorus/ring/mesh (synthetic)ns-2
121. Unfairness in TCP Performance over Lossy Optical Burst-Switched (OBS) Networks
     J. Sullivan, P. Ramos, V.M. Vokkarane. 2009, conference

     Problem

     Whether competing TCP flows share lossy OBS networks fairly.

     Approach

     Fairness study of TCP flavors over OBS using Jain's index.

     Finding

     Random burst loss makes TCP flows unfair under some conditions.

     TCP over OBSsimulationns-2
122. Energy-Efficient Target Monitoring Using Base-Station Relocation in Wireless Sensor Networks
     D. Jain, V.M. Vokkarane. 2008, conference

     Problem

     Energy-efficient target monitoring in sensor networks.

     Approach

     Base-station relocation to cut transmission energy.

     Finding

     Relocating the base station extends network lifetime.

     Wireless sensor and access networksILP/MILPsimulationTorus/ring/mesh (synthetic)
123. Impairment-Aware Manycasting Algorithms Over Optical Burst-Switched Networks
     B.G. Bathula, R.R.C. Bikram, V.M. Vokkarane, S. Talabattula. 2008, conference

     Problem

     Physical impairments degrade manycast in OBS.

     Approach

     Impairment-aware manycasting algorithms using signal quality estimates.

     Finding

     Accounting for impairments lowers loss from bit errors.

     Manycast and anycastanalytical modelsimulationNSFNET
124. Impairment-Aware Manycasting Over Optical Burst-Switched Networks
     B.G. Balagangadhar, V.M. Vokkarane, R.R.C. Bikram. 2008, conference

     Problem

     Signal degradation from attenuation, splitting, and amplifier noise in manycast OBS.

     Approach

     Impairment-aware manycasting based on q-factor and BER.

     Finding

     Impairment awareness reduces burst loss from poor signal quality.

     Manycast and anycastmetaheuristicsimulationNSFNET
125. Performance Analysis of Dual-Homed Fault-Tolerant Routing in Wireless Sensor Networks
     N. Jain, V.M. Vokkarane, J.P. Wang. 2008, conference

     Problem

     Fault tolerance for sensor networks.

     Approach

     Performance analysis of dual-homed fault-tolerant routing with clustering.

     Finding

     Dual-homed routing improves delivery under failures.

     Wireless sensor and access networksanalytical modelsimulationUSNETns-2
126. Proactive Loss Recovery using Forward Segment Redundancy in Optical Burst-Switched (OBS) Networks
     D. Chandran, N. Charbonneau, V.M. Vokkarane. 2008, conference

     Problem

     A single burst loss can hit many TCP segments.

     Approach

     Forward segment redundancy for proactive loss recovery.

     Finding

     Redundancy reduces TCP-visible losses.

     TCP over OBSsimulationns-2
127. TCP Over Optical Burst Switching (OBS): To Split or Not to Split?
     D. Padmanabhan, R.R.C. Bikram, V.M. Vokkarane. 2008, conference

     Problem

     TCP over hybrid IP-access and OBS-core networks performs poorly.

     Approach

     Split-TCP at the OBS edge.

     Finding

     Splitting the connection improves TCP throughput over OBS.

     TCP over OBSanalytical modelsimulationNSFNETns-2
128. CAR: Coordinated Activation and Reporting for Energy-Efficient Target Intrusion Detection, Tracking, and Reporting in Wireless Sensor Networks
     D. Jain, V.M. Vokkarane. 2007, conference

     Problem

     Target monitoring drains sensor batteries.

     Approach

     Coordinated activation and reporting for detection, tracking, and reporting.

     Finding

     Coordination extends network lifetime while keeping monitoring accuracy.

     Wireless sensor and access networkssimulation
129. Manycasting over Optical Burst-Switched Networks
     X. Huang, Q. She, V.M. Vokkarane, J.P. Jue. 2007, conference

     Problem

     Manycast over OBS suffers data loss from burst contention.

     Approach

     Static over-provisioning and dynamic membership schemes.

     Finding

     Both schemes reduce manycast data loss.

     Manycast and anycastsimulationNSFNET
130. Node-Replacement Policies to Maintain Threshold-Coverage in Wireless Sensor Networks
     S. Parikh, V.M. Vokkarane, L. Xing, D. Kasilingam. 2007, conference

     Problem

     Maintaining minimum coverage for target tracking as nodes fail.

     Approach

     Node-replacement policies that keep threshold coverage while maximizing lifetime.

     Finding

     Replacement policies sustain coverage longer.

     Wireless sensor and access networksanalytical modelsimulationUSNETMATLAB
131. Source-Ordering for Improved TCP Performance over Load-Balanced Optical Burst- Switched (OBS) Networks
     B. Komatireddy, V.M. Vokkarane. 2007, conference

     Problem

     Load balancing in OBS reorders packets and hurts TCP.

     Approach

     Source-ordering at the ingress to restore order.

     Finding

     Source ordering improves TCP performance over load-balanced OBS.

     TCP over OBSanalytical modelsimulationns-2
132. TCP-Aware Load-Balanced Routing in Optical Burst-Switched (OBS) Networks
     B. Komatireddy, D. Chandran, V.M. Vokkarane. 2007, conference

     Problem

     Load balancing causes false timeouts and false triple duplicates for TCP.

     Approach

     Source-ordering with TCP-aware load-balanced routing.

     Finding

     Improves TCP throughput by three to four times.

     TCP over OBSanalytical modelsimulationns-2
133. Fault-tolerant Wireless Access Network Design for Dual-Homed Users
     X. Huang, J. Wang, V.M. Vokkarane, J. P. Jue. 2006, conference

     Problem

     Dual homing in wireless access does not cover controller or switching-center failures.

     Approach

     Fault-tolerant routing design from base stations to controllers for dual-homed users.

     Finding

     Improves resilience to higher-layer failures in hierarchical wireless access.

     Wireless sensor and access networksILP/MILPheuristicmetaheuristicTorus/ring/mesh (synthetic)CPLEX
134. Forward Redundancy: A Loss Recovery Mechanism for Optical Burst-Switched Networks
     V.M. Vokkarane, Q. Zhang. 2006, conference

     Problem

     Loss recovery in OBS without retransmission delay.

     Approach

     Forward redundancy, sending redundant data ahead to recover losses, evaluated by simulation.

     Finding

     Forward redundancy recovers lost data proactively.

     OBS contention and QoSanalytical modelsimulationNSFNET
135. Optimal Remote Homing for Providing Service Differentiation in Information-aware Multi- Layered Wireless Sensor Networks
     J. Wang, V.M. Vokkarane. 2006, conference

     Problem

     Critical sensor data needs reliable, low-latency delivery.

     Approach

     Remote-homing for service differentiation in multi-layered sensor networks.

     Finding

     Differentiates delivery of critical versus routine data.

     Wireless sensor and access networkssimulation
136. Wireless Sensor Network Based Model for Secure Railway Operations
     E. Aboelela, W. Edberg, C. Papakonstantinou, V.M. Vokkarane. 2006, conference

     Problem

     Railway track problems are detected by manual inspection.

     Approach

     Wireless sensor network model for monitoring railway operations.

     Finding

     Proposes a sensing architecture for secure rail operations.

     Wireless sensor and access networksanalytical modelsimulation
137. A Layered Architecture for Supporting Optical Burst Switching
     F. Farahmand, J.P. Jue, V.M. Vokkarane, J. J. P. C. Rodrigues, M. M. Freire. 2005, conference

     Problem

     OBS lacks a defined layered architecture spanning control and data planes.

     Approach

     A layered protocol architecture for OBS in the optical core.

     Finding

     Defines layers and functions for implementing OBS.

     OBS architecture
138. Analysis of TCP over Optical Burst-Switched Networks with Burst Retransmission
     Q. Zhang, V.M. Vokkarane, Y. Wang, J.P. Jue. 2005, conference

     Problem

     Random burst losses in OBS are misread by TCP as congestion.

     Approach

     Analytical model of TCP over OBS with burst retransmission.

     Finding

     Burst retransmission reduces false congestion signals and improves TCP throughput.

     TCP over OBSsimulationNSFNET
139. Burst Cloning: A Proactive Scheme to Reduce Data Loss in Optical Burst-Switched Networks
     X. Huang, V.M. Vokkarane, J.P. Jue. 2005, conference

     Problem

     Burst contention losses in OBS.

     Approach

     Burst cloning: send duplicate copies and choose where to clone so copies do not contend with originals.

     Finding

     Proactive cloning reduces data loss.

     OBS contention and QoSanalytical modelsimulationNSFNET
140. Coordinated Survivability in IP-over-Optical Networks with IP-Layer Dual-Homing and Optical-Layer Protection
     V.M. Vokkarane, J. Wang, J.P. Jue. 2005, conference

     Problem

     IP-layer dual homing and optical-layer protection are designed independently.

     Approach

     Coordinated survivability across the IP and optical layers.

     Finding

     Coordination saves resources while keeping hosts connected after failures.

     Survivability and protectionILP/MILPheuristicmetaheuristicTorus/ring/mesh (synthetic)
141. Dual-Homing Protection in IP-over-WDM Networks
     J. Wang, V.M. Vokkarane, R. Jothi, X. Qi, B. Raghavachari, J. P. Jue. 2005, journal

     Problem

     Protection for dual-homed hosts in IP-over-WDM networks.

     Approach

     Primary and backup lightpath design for dual-homed architectures (journal).

     Finding

     Journal version of the dual-homing protection results.

     Survivability and protectionILP/MILPheuristicmetaheuristicTorus/ring/mesh (synthetic)CPLEX
142. Evaluation of Burst Retransmission in Optical Burst-Switched Networks
     Q. Zhang, V.M. Vokkarane, Y. Wang, J.P. Jue. 2005, conference

     Problem

     Burst loss from contention in OBS.

     Approach

     OBS-layer burst retransmission with an analytical loss model.

     Finding

     Retransmission lowers burst loss probability at a cost in delay.

     OBS contention and QoSanalytical modelsimulationNSFNET
143. Reliable Optical Burst Switching for Next-Generation Grid Networks
     V.M. Vokkarane, Q. Zhang. 2005, conference

     Problem

     Grid applications need reliable data transport over OBS.

     Approach

     Reliable OBS mechanisms for grid networks.

     Finding

     Positions OBS as a transport for data grids with loss recovery.

     Grid and e-science networkinganalytical modelsimulationNSFNET
144. Segmentation-Based Non-Preemptive Channel Scheduling Algorithms for Optical Burst-Switched Networks
     V.M. Vokkarane, J.P. Jue. 2005, journal

     Problem

     Traditional OBS scheduling relies on conversion and buffering.

     Approach

     Segmentation-based non-preemptive channel scheduling algorithms (journal).

     Finding

     Segmentation-based schedulers reduce loss versus traditional schedulers.

     OBS contention and QoSanalytical modelsimulationNSFNET
145. Absolute QoS Differentiation in Optical Burst-Switched Networks
     Q. Zhang, V.M. Vokkarane, J.P. Jue, B. Chen. 2004, journal

     Problem

     Relative QoS models give no hard guarantee in OBS.

     Approach

     Absolute QoS differentiation framework.

     Finding

     Journal treatment of early drop and wavelength grouping for absolute loss bounds.

     OBS contention and QoSanalytical modelsimulationUSNET
146. Dual-Homing Protection in WDM Mesh Networks
     J. Wang, V.M. Vokkarane, X. Qi, J.P. Jue. 2004, conference

     Problem

     Survivability of IP-over-WDM networks with dual-homed access.

     Approach

     ILP formulation of dual-homing protection solved with CPLEX.

     Finding

     Joint protection across layers uses fewer resources than protecting each layer separately.

     Survivability and protectionILP/MILPsimulationTorus/ring/mesh (synthetic)CPLEX
147. Dynamic Dual-Homing Protection in WDM Mesh Networks
     V.M. Vokkarane, J. Wang, R. Jothi, X. Qi, B. Raghavachari, J.P. Jue. 2004, conference

     Problem

     Dual homing alone cannot protect against WDM core failures.

     Approach

     Dynamic dual-homing protection algorithms for WDM mesh networks.

     Finding

     Coordinating dual homing with core protection improves blocking and resource use.

     Survivability and protectionheuristicmetaheuristicsimulationTorus/ring/mesh (synthetic)
148. Path Clustering: An Approach to Implement Absolute QoS Differentiation in Optical Burst-Switched Networks
     Q. Zhang, V.M. Vokkarane, J.P. Jue. 2004, conference

     Problem

     Early drop and wavelength grouping guarantee loss only per hop.

     Approach

     Path clustering to provide end-to-end absolute QoS.

     Finding

     Extends absolute differentiation from per-hop to per-path.

     OBS contention and QoSanalytical modelsimulationUSNET
149. Channel Scheduling Algorithms using Burst Segmentation and FDLs for Optical Burst-Switched Networks
     V.M. Vokkarane, G.P.V. Thodime, V. Challagulla, J.P. Jue. 2003, conference

     Problem

     Channel scheduling at OBS nodes must handle contention efficiently.

     Approach

     Scheduling algorithms that combine burst segmentation with fiber delay lines.

     Finding

     Segmentation-aware scheduling lowers loss relative to scheduling without segmentation.

     OBS contention and QoSanalytical modelsimulationNSFNET
150. Dynamic Congestion-Based Load Balanced Routing in Optical Burst-Switched Networks
     G.P.V. Thodime, V.M. Vokkarane, J.P. Jue. 2003, conference

     Problem

     Local contention resolution reacts to loss but ignores congestion on paths.

     Approach

     Dynamic congestion-based load-balanced routing across alternate paths.

     Finding

     Load balancing reduces burst loss by steering traffic away from congested links.

     OBS contention and QoSsimulationUSNET
151. Early Drop Scheme for Providing Absolute QoS Differentiation in Optical Burst-Switched Networks
     Q. Zhang, V.M. Vokkarane, B. Chen, J.P. Jue. 2003, conference

     Problem

     OBS schemes give relative, not absolute, QoS guarantees.

     Approach

     Early drop of low-priority bursts to hold high-priority loss below a bound.

     Finding

     Early drop provides per-hop absolute loss differentiation.

     OBS contention and QoSsimulation
152. Early Drop and Wavelength Grouping Schemes for Providing Absolute QoS Differentiation in Optical Burst-Switched Networks
     Q. Zhang, V.M. Vokkarane, B. Chen, J.P. Jue. 2003, conference

     Problem

     Absolute QoS differentiation in OBS.

     Approach

     Early drop combined with wavelength grouping that reserves channels per class.

     Finding

     Both schemes bound high-priority loss independent of other classes' load.

     OBS contention and QoSanalytical modelsimulation
153. Intermediate Node Initiated (INI) Signaling: A Hybrid Channel Reservation Technique for Optical Burst-Switched Networks
     R. Karanam, V.M. Vokkarane, J.P. Jue. 2003, conference

     Problem

     One-way and two-way reservation both have drawbacks in OBS.

     Approach

     Intermediate Node Initiated signaling, a hybrid where reservation starts at an intermediate node.

     Finding

     Trades setup delay against loss between the two classic signaling schemes.

     OBS contention and QoSsimulationNSFNET
154. Prioritized Burst Segmentation and Composite Burst Assembly Techniques for QoS Support in Optical Burst-Switched Networks
     V.M. Vokkarane, J.P. Jue. 2003, journal

     Problem

     QoS support in OBS without fiber delay lines.

     Approach

     Prioritized contention resolution in the core plus composite burst assembly at the edge.

     Finding

     Journal version of the prioritized segmentation work; differentiates loss by class.

     OBS contention and QoSanalytical modelsimulationNSFNET
155. Burst Segmentation: an Approach for Reducing Packet Loss in Optical Burst- Switched Networks
     V.M. Vokkarane, J.P. Jue, S. Sitaraman. 2002, conference

     Problem

     Whole bursts are dropped when two bursts contend at an OBS core node, wasting most of the data.

     Approach

     Burst segmentation: split the burst and drop only the overlapping segments, combined with deflection routing.

     Finding

     Dropping segments instead of whole bursts cuts packet loss compared with conventional burst dropping.

     OBS contention and QoSsimulationNSFNET
156. Generalized Burst Assembly and Scheduling Techniques for QoS Support in Optical Burst-Switched Networks
     V.M. Vokkarane, Q. Zhang, J.P. Jue, B. Chen. 2002, conference

     Problem

     OBS needs service differentiation without optical buffers.

     Approach

     Generalized burst assembly and scheduling that places packets of different priority within a burst so low-priority segments are dropped first.

     Finding

     Enables loss differentiation between traffic classes at the edge and core.

     OBS contention and QoSsimulation
157. Prioritized Routing and Burst Segmentation for QoS in Optical Burst-Switched Networks
     V.M. Vokkarane, J.P. Jue. 2002, conference

     Problem

     Supporting QoS classes in OBS core nodes.

     Approach

     Prioritized routing combined with burst segmentation, analyzed with a model checked against simulation.

     Finding

     Analysis and simulation agree; blocking grows with the number of switch inputs.

     OBS contention and QoSsimulation

How this page is made. The lab's papers were read one at a time, and each was recorded in our own words as a problem, an approach, and a finding; no text from the papers is reproduced. Tools, topologies, metrics, and methods are counted from each paper's text. Authors and student status come from the director's CV. 4 papers in the record are not yet listed in the CV. Records reflect abstracts, introductions, and conclusions; reported numbers from results sections are the next layer.