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- posterMay 2024
On the Reliability of Time-Sensitive Network Infrastructures
SAC '24: Proceedings of the 39th ACM/SIGAPP Symposium on Applied ComputingApril 2024, Pages 257–258https://doi.org/10.1145/3605098.3636099Time-Sensitive Networking (TSN) becomes increasingly important for a wide variety of business sectors as it offers advanced means to implement data communication with hard real-time constraints using standardized Ethernet. To counter faulty transmissions ...
- research-articleJuly 2023
SRv6‐based Time‐Sensitive Networks (TSN) with low‐overhead rerouting
International Journal of Network Management (IJNM), Volume 33, Issue 4July/August 2023https://doi.org/10.1002/nem.2215AbstractTime‐Sensitive Networks (TSN) aims at providing a solid underpinning for the support of application connectivity demands across a wide spectrum of use cases and operational environments, such as industrial automation and automotive networks. ...
We propose a Software‐Defined Network (SDN)‐based approach for low‐overhead TSN network updates, exploiting Segment Routing over IPv6 (SRv6) for path control. Analysis of both control plane and data plane aspects is provided, and implementation experience ...
- research-articleJanuary 2023
On generating Pareto optimal set in bi-objective reliable network topology design
International Journal of Grid and Utility Computing (IJGUC), Volume 14, Issue 42023, Pages 339–355https://doi.org/10.1504/ijguc.2023.132616This paper considers an NP-hard network topology design (NTD) problem called NTD-CB/R. A key challenge when solving the bi-objective optimisation problem is to simultaneously minimise cost while maximising bandwidth. This paper aims to generate the best ...
- research-articleNovember 2022
R-MPLS: recursive protection for highly dependable MPLS networks
CoNEXT '22: Proceedings of the 18th International Conference on emerging Networking EXperiments and TechnologiesNovember 2022, Pages 276–292https://doi.org/10.1145/3555050.3569140Most modern communication networks feature fast rerouting mechanisms in the data plane. However, design and configuration of such mechanisms even under multiple failures is known to be difficult. In order to increase the resilience of the widely ...
- short-paperNovember 2022
Prefixes equivalence classes: a compact and comprehensive way to grasp the complexity of external BGP updates
LANC '22: Proceedings of the 2022 Latin America Networking ConferenceOctober 2022, Pages 59–63https://doi.org/10.1145/3545250.3560851This article introduces the main ideas behind prefixes equivalence classes, a process that allows essential information distributed through millions of Internet BGP updates to be captured in a few dozen data records. The technique was successfully used ...
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- research-articleAugust 2022
Flash: fast, consistent data plane verification for large-scale network settings
SIGCOMM '22: Proceedings of the ACM SIGCOMM 2022 ConferenceAugust 2022, Pages 314–335https://doi.org/10.1145/3544216.3544246Data plane verification can be an important technique to reduce network disruptions, and researchers have recently made significant progress in achieving fast data plane verification. However, as we apply existing data plane verification techniques to ...
- research-articleJuly 2022
Where Does the Performance Improvement Come From?: - A Reproducibility Concern about Image-Text Retrieval
SIGIR '22: Proceedings of the 45th International ACM SIGIR Conference on Research and Development in Information RetrievalJuly 2022, Pages 2727–2737https://doi.org/10.1145/3477495.3531715This article aims to provide the information retrieval community with some reflections on recent advances in retrieval learning by analyzing the reproducibility of image-text retrieval models. Due to the increase of multimodal data over the last decade, ...
- research-articleOctober 2020
Tiered versus tierless IoT stacks: comparing smart campus software architectures
IoT '20: Proceedings of the 10th International Conference on the Internet of ThingsOctober 2020, Article No.: 21, Pages 1–9https://doi.org/10.1145/3410992.3411002Internet of Things (IoT) software stacks are notoriously complex, conventionally comprising multiple tiers/components and requiring that the developer not only uses multiple programming languages, but also correctly interoperate the components. A novel ...
- posterSeptember 2020
TSFCC: high availability service function chain composition approach in mobile network
MobiCom '20: Proceedings of the 26th Annual International Conference on Mobile Computing and NetworkingApril 2020, Article No.: 84, Pages 1–3https://doi.org/10.1145/3372224.3418163Network function virtualization (NFV) plays a vital role in 5G mobile networks. Concatenating virtual network functions (VNFs) into service function chains (SFCs) provides flexible and diverse network support for intelligent applications. However, the ...
- research-articleJanuary 2020
Reconstruction and application of flooding routing algorithm for smart street light over wireless sensor networks
International Journal of Internet Protocol Technology (IJIPT), Volume 13, Issue 12020, Pages 9–17https://doi.org/10.1504/ijipt.2020.105047For smart street light wireless sensor networks, there are huge number of redundant packets flooding in the route discovery process, resulting in information explosion and high energy consumption. This paper proposes an improved flooding routing protocol, ...
- research-articleOctober 2019
An Energy-efficient Distributed TDMA Scheduling Algorithm for ZigBee-like Cluster-tree WSNs
ACM Transactions on Sensor Networks (TOSN), Volume 16, Issue 1Article No.: 3, Pages 1–41https://doi.org/10.1145/3360722The design of Medium Access Control (MAC) protocol for Wireless Sensor Networks (WSNs) with both limited energy consumption and data delivery time is crucial for industrial and control applications. Since Time Division Multiple Access (TDMA) MAC ...
- posterOctober 2019
Poster: Protecting Control Planes in In-Band Software-Defined Wireless Networks
MobiCom '19: The 25th Annual International Conference on Mobile Computing and NetworkingAugust 2019, Article No.: 78, Pages 1–3https://doi.org/10.1145/3300061.3343396Software-defined networking (SDN) is a mechanism that decouples a control plane from a network to manage the data plane of the network flexibly in a centralized view. In in-band-based software-defined wireless networks (IB-SDWNs), the control plane ...
- short-paperJanuary 2019
EnTER: an encounter based trowbox deployment strategy for enhancing network reliability in post-disaster scenarios over DTN
ICDCN '19: Proceedings of the 20th International Conference on Distributed Computing and NetworkingJanuary 2019, Pages 413–416https://doi.org/10.1145/3288599.3295593Delay-tolerant network (DTN) has been employed as a viable option for exchanging situational information during post-disaster communication. In contrast to stable network, network reliability in DTN depends on the contact opportunities among the nodes (...
- research-articleJanuary 2019
A Polynomial-Time Approximation Algorithm for All-Terminal Network Reliability
SIAM Journal on Computing (SICOMP), Volume 48, Issue 32019, Pages 964–978https://doi.org/10.1137/18M1201846We give a fully polynomial-time randomized approximation scheme (FPRAS) for the all-terminal network reliability problem, which is to determine the probability that in an undirected graph, assuming each edge fails independently, the remainder of the graph is ...
- research-articleOctober 2018
Topology Resilience Evaluation and Enhancement in Software Defined Networks
LANC '18: Proceedings of the 10th Latin America Networking ConferenceOctober 2018, Pages 81–88https://doi.org/10.1145/3277103.3277129Software Defined Networks separates the control and forwarding planes, facilitating and flexibilizing the management of networking. However, the interaction between these planes introduces different vulnerabilities to the network, raising new resilience ...
- posterApril 2018
Topology resilience enhancement for software defined networks
SAC '18: Proceedings of the 33rd Annual ACM Symposium on Applied ComputingApril 2018, Pages 1014–1016https://doi.org/10.1145/3167132.3167406Software Defined Networks is a paradigm that flexibilizes the management of networking, separating the control and forwarding planes. This separation introduces new concerns towards the resilience of the network, which now presents different ...
- articleDecember 2017
Factorization and exact evaluation of the source-terminal diameter-constrained reliability
In classical network reliability, the system under study is a network with perfect nodes and imperfect links that fail randomly and independently. The probability that a given subset K of terminal nodes belongs to the same connected component is called ...
- articleJuly 2017
A recursive formula for the two-edge connected and biconnected reliability of a complete graph
The reliability polynomial RG,p of a finite undirected graph G=V,E gives the probability that the operational edges of G induce a connected graph assuming that all edges of G fail independently with identical probability q=1-p. In this article we ...
- research-articleDecember 2015
Analysis of geometric disaster evaluation model for physical networks
IEEE/ACM Transactions on Networking (TON), Volume 23, Issue 6Pages 1777–1789https://doi.org/10.1109/TNET.2014.2339356A geometric model of a physical network affected by a disaster is proposed and analyzed using integral geometry (geometric probability). This analysis provides a theoretical method of evaluating performance metrics, such as the probability of ...
- articleDecember 2015
Diameter constrained reliability: Complexity, distinguished topologies and asymptotic behavior
Let G=V,E be a simple graph with |V|=n vertices and |E|=m edges, a subset Kï V of terminals, a vector p=p1,',pm∈[0,1]m and a positive integer d, called the diameter. We assume vertices are perfect but edges fail stochastically and independently, with ...